1 /* Everything about breakpoints, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "breakpoint.h"
28 #include "expression.h"
34 #include "gdbthread.h"
37 #include "gdb_string.h"
44 #include "completer.h"
47 #include "cli/cli-script.h"
48 #include "gdb_assert.h"
53 #include "exceptions.h"
58 #include "gdb-events.h"
59 #include "mi/mi-common.h"
61 /* Prototypes for local functions. */
63 static void until_break_command_continuation (struct continuation_arg
*arg
);
65 static void catch_command_1 (char *, int, int);
67 static void enable_delete_command (char *, int);
69 static void enable_delete_breakpoint (struct breakpoint
*);
71 static void enable_once_command (char *, int);
73 static void enable_once_breakpoint (struct breakpoint
*);
75 static void disable_command (char *, int);
77 static void enable_command (char *, int);
79 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
81 static void ignore_command (char *, int);
83 static int breakpoint_re_set_one (void *);
85 static void clear_command (char *, int);
87 static void catch_command (char *, int);
89 static void watch_command (char *, int);
91 static int can_use_hardware_watchpoint (struct value
*);
93 static int break_command_1 (char *, int, int);
95 static void mention (struct breakpoint
*);
97 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
, enum bptype
);
99 static void check_duplicates (struct breakpoint
*);
101 static void breakpoint_adjustment_warning (CORE_ADDR
, CORE_ADDR
, int, int);
103 static CORE_ADDR
adjust_breakpoint_address (CORE_ADDR bpaddr
,
106 static void describe_other_breakpoints (CORE_ADDR
, asection
*, int);
108 static void breakpoints_info (char *, int);
110 static void breakpoint_1 (int, int);
112 static bpstat
bpstat_alloc (const struct bp_location
*, bpstat
);
114 static int breakpoint_cond_eval (void *);
116 static void cleanup_executing_breakpoints (void *);
118 static void commands_command (char *, int);
120 static void condition_command (char *, int);
122 static int get_number_trailer (char **, int);
124 void set_breakpoint_count (int);
133 static int remove_breakpoint (struct bp_location
*, insertion_state_t
);
135 static enum print_stop_action
print_it_typical (bpstat
);
137 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
141 enum exception_event_kind kind
;
144 args_for_catchpoint_enable
;
146 static int watchpoint_check (void *);
148 static void maintenance_info_breakpoints (char *, int);
150 static void create_longjmp_breakpoint (char *);
152 static void create_overlay_event_breakpoint (char *);
154 static int hw_breakpoint_used_count (void);
156 static int hw_watchpoint_used_count (enum bptype
, int *);
158 static void hbreak_command (char *, int);
160 static void thbreak_command (char *, int);
162 static void watch_command_1 (char *, int, int);
164 static void rwatch_command (char *, int);
166 static void awatch_command (char *, int);
168 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
170 static void create_fork_vfork_event_catchpoint (int tempflag
,
172 enum bptype bp_kind
);
174 static void stop_command (char *arg
, int from_tty
);
176 static void stopin_command (char *arg
, int from_tty
);
178 static void stopat_command (char *arg
, int from_tty
);
180 static char *ep_find_event_name_end (char *arg
);
182 static char *ep_parse_optional_if_clause (char **arg
);
184 static char *ep_parse_optional_filename (char **arg
);
186 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
187 enum exception_event_kind ex_event
,
188 struct symtab_and_line
*sal
);
190 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
191 char *arg
, int tempflag
, int from_tty
);
193 static void tcatch_command (char *arg
, int from_tty
);
195 static void ep_skip_leading_whitespace (char **s
);
197 static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc
);
199 static void free_bp_location (struct bp_location
*loc
);
201 static void mark_breakpoints_out (void);
203 /* Prototypes for exported functions. */
205 /* If FALSE, gdb will not use hardware support for watchpoints, even
206 if such is available. */
207 static int can_use_hw_watchpoints
;
210 show_can_use_hw_watchpoints (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
,
214 fprintf_filtered (file
, _("\
215 Debugger's willingness to use watchpoint hardware is %s.\n"),
219 /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
220 If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
221 for unrecognized breakpoint locations.
222 If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
223 static enum auto_boolean pending_break_support
;
225 show_pending_break_support (struct ui_file
*file
, int from_tty
,
226 struct cmd_list_element
*c
,
229 fprintf_filtered (file
, _("\
230 Debugger's behavior regarding pending breakpoints is %s.\n"),
234 /* If 1, gdb will automatically use hardware breakpoints for breakpoints
235 set with "break" but falling in read-only memory.
236 If 0, gdb will warn about such breakpoints, but won't automatically
237 use hardware breakpoints. */
238 static int automatic_hardware_breakpoints
;
240 show_automatic_hardware_breakpoints (struct ui_file
*file
, int from_tty
,
241 struct cmd_list_element
*c
,
244 fprintf_filtered (file
, _("\
245 Automatic usage of hardware breakpoints is %s.\n"),
250 void _initialize_breakpoint (void);
252 extern int addressprint
; /* Print machine addresses? */
254 /* Are we executing breakpoint commands? */
255 static int executing_breakpoint_commands
;
257 /* Are overlay event breakpoints enabled? */
258 static int overlay_events_enabled
;
260 /* Walk the following statement or block through all breakpoints.
261 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
264 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
266 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
267 for (B = breakpoint_chain; \
268 B ? (TMP=B->next, 1): 0; \
271 /* Similar iterators for the low-level breakpoints. */
273 #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next)
275 #define ALL_BP_LOCATIONS_SAFE(B,TMP) \
276 for (B = bp_location_chain; \
277 B ? (TMP=B->global_next, 1): 0; \
280 /* True if breakpoint hit counts should be displayed in breakpoint info. */
282 int show_breakpoint_hit_counts
= 1;
284 /* Chains of all breakpoints defined. */
286 struct breakpoint
*breakpoint_chain
;
288 struct bp_location
*bp_location_chain
;
290 /* Number of last breakpoint made. */
292 int breakpoint_count
;
294 /* Pointer to current exception event record */
295 static struct exception_event_record
*current_exception_event
;
297 /* This function returns a pointer to the string representation of the
298 pathname of the dynamically-linked library that has just been
301 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
302 or undefined results are guaranteed.
304 This string's contents are only valid immediately after the
305 inferior has stopped in the dynamic linker hook, and becomes
306 invalid as soon as the inferior is continued. Clients should make
307 a copy of this string if they wish to continue the inferior and
308 then access the string. */
310 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
311 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
314 /* This function returns a pointer to the string representation of the
315 pathname of the dynamically-linked library that has just been
318 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
319 TRUE, or undefined results are guaranteed.
321 This string's contents are only valid immediately after the
322 inferior has stopped in the dynamic linker hook, and becomes
323 invalid as soon as the inferior is continued. Clients should make
324 a copy of this string if they wish to continue the inferior and
325 then access the string. */
327 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
328 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
331 /* This function is called by the "catch load" command. It allows the
332 debugger to be notified by the dynamic linker when a specified
333 library file (or any library file, if filename is NULL) is loaded. */
335 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
336 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
337 error (_("catch of library loads not yet implemented on this platform"))
340 /* This function is called by the "catch unload" command. It allows
341 the debugger to be notified by the dynamic linker when a specified
342 library file (or any library file, if filename is NULL) is
345 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
346 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \
347 error (_("catch of library unloads not yet implemented on this platform"))
350 /* Return whether a breakpoint is an active enabled breakpoint. */
352 breakpoint_enabled (struct breakpoint
*b
)
354 return (b
->enable_state
== bp_enabled
);
357 /* Set breakpoint count to NUM. */
360 set_breakpoint_count (int num
)
362 breakpoint_count
= num
;
363 set_internalvar (lookup_internalvar ("bpnum"),
364 value_from_longest (builtin_type_int
, (LONGEST
) num
));
367 /* Used in run_command to zero the hit count when a new run starts. */
370 clear_breakpoint_hit_counts (void)
372 struct breakpoint
*b
;
378 /* Default address, symtab and line to put a breakpoint at
379 for "break" command with no arg.
380 if default_breakpoint_valid is zero, the other three are
381 not valid, and "break" with no arg is an error.
383 This set by print_stack_frame, which calls set_default_breakpoint. */
385 int default_breakpoint_valid
;
386 CORE_ADDR default_breakpoint_address
;
387 struct symtab
*default_breakpoint_symtab
;
388 int default_breakpoint_line
;
390 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
391 Advance *PP after the string and any trailing whitespace.
393 Currently the string can either be a number or "$" followed by the name
394 of a convenience variable. Making it an expression wouldn't work well
395 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
397 If the string is a NULL pointer, that denotes the last breakpoint.
399 TRAILER is a character which can be found after the number; most
400 commonly this is `-'. If you don't want a trailer, use \0. */
402 get_number_trailer (char **pp
, int trailer
)
404 int retval
= 0; /* default */
408 /* Empty line means refer to the last breakpoint. */
409 return breakpoint_count
;
412 /* Make a copy of the name, so we can null-terminate it
413 to pass to lookup_internalvar(). */
418 while (isalnum (*p
) || *p
== '_')
420 varname
= (char *) alloca (p
- start
+ 1);
421 strncpy (varname
, start
, p
- start
);
422 varname
[p
- start
] = '\0';
423 val
= value_of_internalvar (lookup_internalvar (varname
));
424 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INT
)
425 retval
= (int) value_as_long (val
);
428 printf_filtered (_("Convenience variable must have integer value.\n"));
436 while (*p
>= '0' && *p
<= '9')
439 /* There is no number here. (e.g. "cond a == b"). */
441 /* Skip non-numeric token */
442 while (*p
&& !isspace((int) *p
))
444 /* Return zero, which caller must interpret as error. */
450 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
452 /* Trailing junk: return 0 and let caller print error msg. */
453 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
464 /* Like get_number_trailer, but don't allow a trailer. */
466 get_number (char **pp
)
468 return get_number_trailer (pp
, '\0');
471 /* Parse a number or a range.
472 * A number will be of the form handled by get_number.
473 * A range will be of the form <number1> - <number2>, and
474 * will represent all the integers between number1 and number2,
477 * While processing a range, this fuction is called iteratively;
478 * At each call it will return the next value in the range.
480 * At the beginning of parsing a range, the char pointer PP will
481 * be advanced past <number1> and left pointing at the '-' token.
482 * Subsequent calls will not advance the pointer until the range
483 * is completed. The call that completes the range will advance
484 * pointer PP past <number2>.
488 get_number_or_range (char **pp
)
490 static int last_retval
, end_value
;
491 static char *end_ptr
;
492 static int in_range
= 0;
496 /* Default case: pp is pointing either to a solo number,
497 or to the first number of a range. */
498 last_retval
= get_number_trailer (pp
, '-');
503 /* This is the start of a range (<number1> - <number2>).
504 Skip the '-', parse and remember the second number,
505 and also remember the end of the final token. */
509 while (isspace ((int) *end_ptr
))
510 end_ptr
++; /* skip white space */
511 end_value
= get_number (temp
);
512 if (end_value
< last_retval
)
514 error (_("inverted range"));
516 else if (end_value
== last_retval
)
518 /* degenerate range (number1 == number2). Advance the
519 token pointer so that the range will be treated as a
528 error (_("negative value"));
531 /* pp points to the '-' that betokens a range. All
532 number-parsing has already been done. Return the next
533 integer value (one greater than the saved previous value).
534 Do not advance the token pointer 'pp' until the end of range
537 if (++last_retval
== end_value
)
539 /* End of range reached; advance token pointer. */
549 /* condition N EXP -- set break condition of breakpoint N to EXP. */
552 condition_command (char *arg
, int from_tty
)
554 struct breakpoint
*b
;
559 error_no_arg (_("breakpoint number"));
562 bnum
= get_number (&p
);
564 error (_("Bad breakpoint argument: '%s'"), arg
);
567 if (b
->number
== bnum
)
569 struct bp_location
*loc
= b
->loc
;
570 for (; loc
; loc
= loc
->next
)
578 if (b
->cond_string
!= NULL
)
579 xfree (b
->cond_string
);
583 b
->cond_string
= NULL
;
585 printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum
);
590 /* I don't know if it matters whether this is the string the user
591 typed in or the decompiled expression. */
592 b
->cond_string
= savestring (arg
, strlen (arg
));
593 b
->condition_not_parsed
= 0;
594 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
597 loc
->cond
= parse_exp_1 (&arg
, block_for_pc (loc
->address
), 0);
599 error (_("Junk at end of expression"));
602 breakpoints_changed ();
603 breakpoint_modify_event (b
->number
);
607 error (_("No breakpoint number %d."), bnum
);
611 commands_command (char *arg
, int from_tty
)
613 struct breakpoint
*b
;
616 struct command_line
*l
;
618 /* If we allowed this, we would have problems with when to
619 free the storage, if we change the commands currently
622 if (executing_breakpoint_commands
)
623 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
626 bnum
= get_number (&p
);
629 error (_("Unexpected extra arguments following breakpoint number."));
632 if (b
->number
== bnum
)
634 char *tmpbuf
= xstrprintf ("Type commands for when breakpoint %d is hit, one per line.",
636 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
637 l
= read_command_lines (tmpbuf
, from_tty
);
638 do_cleanups (cleanups
);
639 free_command_lines (&b
->commands
);
641 breakpoints_changed ();
642 breakpoint_modify_event (b
->number
);
645 error (_("No breakpoint number %d."), bnum
);
648 /* Like commands_command, but instead of reading the commands from
649 input stream, takes them from an already parsed command structure.
651 This is used by cli-script.c to DTRT with breakpoint commands
652 that are part of if and while bodies. */
653 enum command_control_type
654 commands_from_control_command (char *arg
, struct command_line
*cmd
)
656 struct breakpoint
*b
;
660 /* If we allowed this, we would have problems with when to
661 free the storage, if we change the commands currently
664 if (executing_breakpoint_commands
)
665 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
667 /* An empty string for the breakpoint number means the last
668 breakpoint, but get_number expects a NULL pointer. */
673 bnum
= get_number (&p
);
676 error (_("Unexpected extra arguments following breakpoint number."));
679 if (b
->number
== bnum
)
681 free_command_lines (&b
->commands
);
682 if (cmd
->body_count
!= 1)
683 error (_("Invalid \"commands\" block structure."));
684 /* We need to copy the commands because if/while will free the
685 list after it finishes execution. */
686 b
->commands
= copy_command_lines (cmd
->body_list
[0]);
687 breakpoints_changed ();
688 breakpoint_modify_event (b
->number
);
689 return simple_control
;
691 error (_("No breakpoint number %d."), bnum
);
694 /* Like target_read_memory() but if breakpoints are inserted, return
695 the shadow contents instead of the breakpoints themselves.
697 Read "memory data" from whatever target or inferior we have.
698 Returns zero if successful, errno value if not. EIO is used
699 for address out of bounds. If breakpoints are inserted, returns
700 shadow contents, not the breakpoints themselves. From breakpoint.c. */
703 read_memory_nobpt (CORE_ADDR memaddr
, gdb_byte
*myaddr
, unsigned len
)
706 const struct bp_location
*b
;
707 CORE_ADDR bp_addr
= 0;
710 if (gdbarch_breakpoint_from_pc (current_gdbarch
, &bp_addr
, &bp_size
) == NULL
)
711 /* No breakpoints on this machine. */
712 return target_read_memory (memaddr
, myaddr
, len
);
716 if (b
->owner
->type
== bp_none
)
717 warning (_("reading through apparently deleted breakpoint #%d?"),
720 if (b
->loc_type
!= bp_loc_software_breakpoint
)
724 /* Addresses and length of the part of the breakpoint that
726 bp_addr
= b
->target_info
.placed_address
;
727 bp_size
= b
->target_info
.shadow_len
;
729 /* bp isn't valid, or doesn't shadow memory. */
731 if (bp_addr
+ bp_size
<= memaddr
)
732 /* The breakpoint is entirely before the chunk of memory we
735 if (bp_addr
>= memaddr
+ len
)
736 /* The breakpoint is entirely after the chunk of memory we are
739 /* Copy the breakpoint from the shadow contents, and recurse for
740 the things before and after. */
742 /* Offset within shadow_contents. */
745 if (bp_addr
< memaddr
)
747 /* Only copy the second part of the breakpoint. */
748 bp_size
-= memaddr
- bp_addr
;
749 bptoffset
= memaddr
- bp_addr
;
753 if (bp_addr
+ bp_size
> memaddr
+ len
)
755 /* Only copy the first part of the breakpoint. */
756 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
759 memcpy (myaddr
+ bp_addr
- memaddr
,
760 b
->target_info
.shadow_contents
+ bptoffset
, bp_size
);
762 if (bp_addr
> memaddr
)
764 /* Copy the section of memory before the breakpoint. */
765 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
770 if (bp_addr
+ bp_size
< memaddr
+ len
)
772 /* Copy the section of memory after the breakpoint. */
773 status
= read_memory_nobpt (bp_addr
+ bp_size
,
774 myaddr
+ bp_addr
+ bp_size
- memaddr
,
775 memaddr
+ len
- (bp_addr
+ bp_size
));
782 /* Nothing overlaps. Just call read_memory_noerr. */
783 return target_read_memory (memaddr
, myaddr
, len
);
787 /* A wrapper function for inserting catchpoints. */
789 insert_catchpoint (struct ui_out
*uo
, void *args
)
791 struct breakpoint
*b
= (struct breakpoint
*) args
;
797 target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
800 target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
803 target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
806 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
811 /* Helper routine: free the value chain for a breakpoint (watchpoint). */
814 free_valchain (struct bp_location
*b
)
819 /* Free the saved value chain. We will construct a new one
820 the next time the watchpoint is inserted. */
821 for (v
= b
->owner
->val_chain
; v
; v
= n
)
826 b
->owner
->val_chain
= NULL
;
829 /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
830 Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
831 PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems.
833 NOTE drow/2003-09-09: This routine could be broken down to an object-style
834 method for each breakpoint or catchpoint type. */
836 insert_bp_location (struct bp_location
*bpt
,
837 struct ui_file
*tmp_error_stream
,
838 int *disabled_breaks
, int *process_warning
,
839 int *hw_breakpoint_error
)
843 if (!breakpoint_enabled (bpt
->owner
))
846 if (!bpt
->enabled
|| bpt
->shlib_disabled
|| bpt
->inserted
|| bpt
->duplicate
)
849 /* Initialize the target-specific information. */
850 memset (&bpt
->target_info
, 0, sizeof (bpt
->target_info
));
851 bpt
->target_info
.placed_address
= bpt
->address
;
853 if (bpt
->loc_type
== bp_loc_software_breakpoint
854 || bpt
->loc_type
== bp_loc_hardware_breakpoint
)
856 if (bpt
->owner
->type
!= bp_hardware_breakpoint
)
858 /* If the explicitly specified breakpoint type
859 is not hardware breakpoint, check the memory map to see
860 if the breakpoint address is in read only memory or not.
861 Two important cases are:
862 - location type is not hardware breakpoint, memory
863 is readonly. We change the type of the location to
865 - location type is hardware breakpoint, memory is read-write.
866 This means we've previously made the location hardware one, but
867 then the memory map changed, so we undo.
869 When breakpoints are removed, remove_breakpoints will
870 use location types we've just set here, the only possible
871 problem is that memory map has changed during running program,
872 but it's not going to work anyway with current gdb. */
873 struct mem_region
*mr
874 = lookup_mem_region (bpt
->target_info
.placed_address
);
878 if (automatic_hardware_breakpoints
)
881 enum bp_loc_type new_type
;
883 if (mr
->attrib
.mode
!= MEM_RW
)
884 new_type
= bp_loc_hardware_breakpoint
;
886 new_type
= bp_loc_software_breakpoint
;
888 if (new_type
!= bpt
->loc_type
)
891 bpt
->loc_type
= new_type
;
894 fprintf_filtered (gdb_stdout
, _("\
895 Note: automatically using hardware breakpoints for read-only addresses.\n"));
900 else if (bpt
->loc_type
== bp_loc_software_breakpoint
901 && mr
->attrib
.mode
!= MEM_RW
)
902 warning (_("cannot set software breakpoint at readonly address %s"),
903 paddr (bpt
->address
));
907 /* First check to see if we have to handle an overlay. */
908 if (overlay_debugging
== ovly_off
909 || bpt
->section
== NULL
910 || !(section_is_overlay (bpt
->section
)))
912 /* No overlay handling: just set the breakpoint. */
914 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
915 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
917 val
= target_insert_breakpoint (&bpt
->target_info
);
921 /* This breakpoint is in an overlay section.
922 Shall we set a breakpoint at the LMA? */
923 if (!overlay_events_enabled
)
925 /* Yes -- overlay event support is not active,
926 so we must try to set a breakpoint at the LMA.
927 This will not work for a hardware breakpoint. */
928 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
929 warning (_("hardware breakpoint %d not supported in overlay!"),
933 CORE_ADDR addr
= overlay_unmapped_address (bpt
->address
,
935 /* Set a software (trap) breakpoint at the LMA. */
936 bpt
->overlay_target_info
= bpt
->target_info
;
937 bpt
->overlay_target_info
.placed_address
= addr
;
938 val
= target_insert_breakpoint (&bpt
->overlay_target_info
);
940 fprintf_unfiltered (tmp_error_stream
,
941 "Overlay breakpoint %d failed: in ROM?",
945 /* Shall we set a breakpoint at the VMA? */
946 if (section_is_mapped (bpt
->section
))
948 /* Yes. This overlay section is mapped into memory. */
949 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
950 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
952 val
= target_insert_breakpoint (&bpt
->target_info
);
956 /* No. This breakpoint will not be inserted.
957 No error, but do not mark the bp as 'inserted'. */
964 /* Can't set the breakpoint. */
965 if (solib_address (bpt
->address
))
967 /* See also: disable_breakpoints_in_shlibs. */
969 bpt
->shlib_disabled
= 1;
970 if (!*disabled_breaks
)
972 fprintf_unfiltered (tmp_error_stream
,
973 "Cannot insert breakpoint %d.\n",
975 fprintf_unfiltered (tmp_error_stream
,
976 "Temporarily disabling shared library breakpoints:\n");
978 *disabled_breaks
= 1;
979 fprintf_unfiltered (tmp_error_stream
,
980 "breakpoint #%d\n", bpt
->owner
->number
);
984 #ifdef ONE_PROCESS_WRITETEXT
985 *process_warning
= 1;
987 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
989 *hw_breakpoint_error
= 1;
990 fprintf_unfiltered (tmp_error_stream
,
991 "Cannot insert hardware breakpoint %d.\n",
996 fprintf_unfiltered (tmp_error_stream
,
997 "Cannot insert breakpoint %d.\n",
999 fprintf_filtered (tmp_error_stream
,
1000 "Error accessing memory address ");
1001 deprecated_print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
1002 fprintf_filtered (tmp_error_stream
, ": %s.\n",
1003 safe_strerror (val
));
1014 else if (bpt
->loc_type
== bp_loc_hardware_watchpoint
1015 /* NOTE drow/2003-09-08: This state only exists for removing
1016 watchpoints. It's not clear that it's necessary... */
1017 && bpt
->owner
->disposition
!= disp_del_at_next_stop
)
1019 /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints
1020 based on the expression. Ideally this should happen at a higher level,
1021 and there should be one bp_location for each computed address we
1022 must watch. As soon as a many-to-one mapping is available I'll
1025 int within_current_scope
;
1026 struct value
*mark
= value_mark ();
1028 struct frame_id saved_frame_id
;
1030 /* Save the current frame's ID so we can restore it after
1031 evaluating the watchpoint expression on its own frame. */
1032 /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
1033 took a frame parameter, so that we didn't have to change the
1035 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
1037 /* Determine if the watchpoint is within scope. */
1038 if (bpt
->owner
->exp_valid_block
== NULL
)
1039 within_current_scope
= 1;
1042 struct frame_info
*fi
;
1043 fi
= frame_find_by_id (bpt
->owner
->watchpoint_frame
);
1044 within_current_scope
= (fi
!= NULL
);
1045 if (within_current_scope
)
1049 if (within_current_scope
)
1051 free_valchain (bpt
);
1053 /* Evaluate the expression and cut the chain of values
1054 produced off from the value chain.
1056 Make sure the value returned isn't lazy; we use
1057 laziness to determine what memory GDB actually needed
1058 in order to compute the value of the expression. */
1059 v
= evaluate_expression (bpt
->owner
->exp
);
1061 value_release_to_mark (mark
);
1063 bpt
->owner
->val_chain
= v
;
1066 /* Look at each value on the value chain. */
1067 for (; v
; v
= value_next (v
))
1069 /* If it's a memory location, and GDB actually needed
1070 its contents to evaluate the expression, then we
1072 if (VALUE_LVAL (v
) == lval_memory
1073 && ! value_lazy (v
))
1075 struct type
*vtype
= check_typedef (value_type (v
));
1077 /* We only watch structs and arrays if user asked
1078 for it explicitly, never if they just happen to
1079 appear in the middle of some value chain. */
1080 if (v
== bpt
->owner
->val_chain
1081 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1082 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1087 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1088 len
= TYPE_LENGTH (value_type (v
));
1090 if (bpt
->owner
->type
== bp_read_watchpoint
)
1092 else if (bpt
->owner
->type
== bp_access_watchpoint
)
1095 val
= target_insert_watchpoint (addr
, len
, type
);
1098 /* Don't exit the loop, try to insert
1099 every value on the value chain. That's
1100 because we will be removing all the
1101 watches below, and removing a
1102 watchpoint we didn't insert could have
1110 /* Failure to insert a watchpoint on any memory value in the
1111 value chain brings us here. */
1114 remove_breakpoint (bpt
, mark_uninserted
);
1115 *hw_breakpoint_error
= 1;
1116 fprintf_unfiltered (tmp_error_stream
,
1117 "Could not insert hardware watchpoint %d.\n",
1118 bpt
->owner
->number
);
1124 printf_filtered (_("\
1125 Hardware watchpoint %d deleted because the program has left the block \n\
1126 in which its expression is valid.\n"),
1127 bpt
->owner
->number
);
1128 if (bpt
->owner
->related_breakpoint
)
1129 bpt
->owner
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
1130 bpt
->owner
->disposition
= disp_del_at_next_stop
;
1133 /* Restore the selected frame. */
1134 select_frame (frame_find_by_id (saved_frame_id
));
1139 else if (bpt
->owner
->type
== bp_catch_fork
1140 || bpt
->owner
->type
== bp_catch_vfork
1141 || bpt
->owner
->type
== bp_catch_exec
)
1143 struct gdb_exception e
= catch_exception (uiout
, insert_catchpoint
,
1144 bpt
->owner
, RETURN_MASK_ERROR
);
1145 exception_fprintf (gdb_stderr
, e
, "warning: inserting catchpoint %d: ",
1146 bpt
->owner
->number
);
1148 bpt
->owner
->enable_state
= bp_disabled
;
1152 /* We've already printed an error message if there was a problem
1153 inserting this catchpoint, and we've disabled the catchpoint,
1154 so just return success. */
1161 /* insert_breakpoints is used when starting or continuing the program.
1162 remove_breakpoints is used when the program stops.
1163 Both return zero if successful,
1164 or an `errno' value if could not write the inferior. */
1167 insert_breakpoints (void)
1169 struct bp_location
*b
, *temp
;
1172 int disabled_breaks
= 0;
1173 int hw_breakpoint_error
= 0;
1174 int process_warning
= 0;
1176 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1177 make_cleanup_ui_file_delete (tmp_error_stream
);
1179 /* Explicitly mark the warning -- this will only be printed if
1180 there was an error. */
1181 fprintf_unfiltered (tmp_error_stream
, "Warning:\n");
1183 ALL_BP_LOCATIONS_SAFE (b
, temp
)
1185 if (!breakpoint_enabled (b
->owner
))
1188 /* There is no point inserting thread-specific breakpoints if the
1189 thread no longer exists. */
1190 if (b
->owner
->thread
!= -1
1191 && !valid_thread_id (b
->owner
->thread
))
1194 /* FIXME drow/2003-10-07: This code should be pushed elsewhere when
1195 hardware watchpoints are split into multiple loc breakpoints. */
1196 if ((b
->loc_type
== bp_loc_hardware_watchpoint
1197 || b
->owner
->type
== bp_watchpoint
) && !b
->owner
->val
)
1200 val
= evaluate_expression (b
->owner
->exp
);
1201 release_value (val
);
1202 if (value_lazy (val
))
1203 value_fetch_lazy (val
);
1204 b
->owner
->val
= val
;
1207 val
= insert_bp_location (b
, tmp_error_stream
,
1208 &disabled_breaks
, &process_warning
,
1209 &hw_breakpoint_error
);
1216 /* If a hardware breakpoint or watchpoint was inserted, add a
1217 message about possibly exhausted resources. */
1218 if (hw_breakpoint_error
)
1220 fprintf_unfiltered (tmp_error_stream
,
1221 "Could not insert hardware breakpoints:\n\
1222 You may have requested too many hardware breakpoints/watchpoints.\n");
1224 #ifdef ONE_PROCESS_WRITETEXT
1225 if (process_warning
)
1226 fprintf_unfiltered (tmp_error_stream
,
1227 "The same program may be running in another process.");
1229 target_terminal_ours_for_output ();
1230 error_stream (tmp_error_stream
);
1235 remove_breakpoints (void)
1237 struct bp_location
*b
;
1240 ALL_BP_LOCATIONS (b
)
1244 val
= remove_breakpoint (b
, mark_uninserted
);
1253 remove_hw_watchpoints (void)
1255 struct bp_location
*b
;
1258 ALL_BP_LOCATIONS (b
)
1260 if (b
->inserted
&& b
->loc_type
== bp_loc_hardware_watchpoint
)
1262 val
= remove_breakpoint (b
, mark_uninserted
);
1271 reattach_breakpoints (int pid
)
1273 struct bp_location
*b
;
1275 struct cleanup
*old_chain
= save_inferior_ptid ();
1276 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1277 int dummy1
= 0, dummy2
= 0, dummy3
= 0;
1279 make_cleanup_ui_file_delete (tmp_error_stream
);
1281 inferior_ptid
= pid_to_ptid (pid
);
1282 ALL_BP_LOCATIONS (b
)
1287 val
= insert_bp_location (b
, tmp_error_stream
,
1288 &dummy1
, &dummy2
, &dummy3
);
1291 do_cleanups (old_chain
);
1296 do_cleanups (old_chain
);
1301 update_breakpoints_after_exec (void)
1303 struct breakpoint
*b
;
1304 struct breakpoint
*temp
;
1306 /* Doing this first prevents the badness of having delete_breakpoint()
1307 write a breakpoint's current "shadow contents" to lift the bp. That
1308 shadow is NOT valid after an exec()! */
1309 mark_breakpoints_out ();
1311 ALL_BREAKPOINTS_SAFE (b
, temp
)
1313 /* Solib breakpoints must be explicitly reset after an exec(). */
1314 if (b
->type
== bp_shlib_event
)
1316 delete_breakpoint (b
);
1320 /* Thread event breakpoints must be set anew after an exec(),
1321 as must overlay event breakpoints. */
1322 if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
1324 delete_breakpoint (b
);
1328 /* Step-resume breakpoints are meaningless after an exec(). */
1329 if (b
->type
== bp_step_resume
)
1331 delete_breakpoint (b
);
1335 /* Don't delete an exec catchpoint, because else the inferior
1336 won't stop when it ought!
1338 Similarly, we probably ought to keep vfork catchpoints, 'cause
1339 on this target, we may not be able to stop when the vfork is
1340 seen, but only when the subsequent exec is seen. (And because
1341 deleting fork catchpoints here but not vfork catchpoints will
1342 seem mysterious to users, keep those too.) */
1343 if ((b
->type
== bp_catch_exec
) ||
1344 (b
->type
== bp_catch_vfork
) ||
1345 (b
->type
== bp_catch_fork
))
1350 /* bp_finish is a special case. The only way we ought to be able
1351 to see one of these when an exec() has happened, is if the user
1352 caught a vfork, and then said "finish". Ordinarily a finish just
1353 carries them to the call-site of the current callee, by setting
1354 a temporary bp there and resuming. But in this case, the finish
1355 will carry them entirely through the vfork & exec.
1357 We don't want to allow a bp_finish to remain inserted now. But
1358 we can't safely delete it, 'cause finish_command has a handle to
1359 the bp on a bpstat, and will later want to delete it. There's a
1360 chance (and I've seen it happen) that if we delete the bp_finish
1361 here, that its storage will get reused by the time finish_command
1362 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1363 We really must allow finish_command to delete a bp_finish.
1365 In the absense of a general solution for the "how do we know
1366 it's safe to delete something others may have handles to?"
1367 problem, what we'll do here is just uninsert the bp_finish, and
1368 let finish_command delete it.
1370 (We know the bp_finish is "doomed" in the sense that it's
1371 momentary, and will be deleted as soon as finish_command sees
1372 the inferior stopped. So it doesn't matter that the bp's
1373 address is probably bogus in the new a.out, unlike e.g., the
1374 solib breakpoints.) */
1376 if (b
->type
== bp_finish
)
1381 /* Without a symbolic address, we have little hope of the
1382 pre-exec() address meaning the same thing in the post-exec()
1384 if (b
->addr_string
== NULL
)
1386 delete_breakpoint (b
);
1390 /* FIXME what about longjmp breakpoints? Re-create them here? */
1391 create_overlay_event_breakpoint ("_ovly_debug_event");
1395 detach_breakpoints (int pid
)
1397 struct bp_location
*b
;
1399 struct cleanup
*old_chain
= save_inferior_ptid ();
1401 if (pid
== PIDGET (inferior_ptid
))
1402 error (_("Cannot detach breakpoints of inferior_ptid"));
1404 /* Set inferior_ptid; remove_breakpoint uses this global. */
1405 inferior_ptid
= pid_to_ptid (pid
);
1406 ALL_BP_LOCATIONS (b
)
1410 val
= remove_breakpoint (b
, mark_inserted
);
1413 do_cleanups (old_chain
);
1418 do_cleanups (old_chain
);
1423 remove_breakpoint (struct bp_location
*b
, insertion_state_t is
)
1427 if (b
->owner
->enable_state
== bp_permanent
)
1428 /* Permanent breakpoints cannot be inserted or removed. */
1431 if (b
->owner
->type
== bp_none
)
1432 warning (_("attempted to remove apparently deleted breakpoint #%d?"),
1435 if (b
->loc_type
== bp_loc_software_breakpoint
1436 || b
->loc_type
== bp_loc_hardware_breakpoint
)
1438 /* "Normal" instruction breakpoint: either the standard
1439 trap-instruction bp (bp_breakpoint), or a
1440 bp_hardware_breakpoint. */
1442 /* First check to see if we have to handle an overlay. */
1443 if (overlay_debugging
== ovly_off
1444 || b
->section
== NULL
1445 || !(section_is_overlay (b
->section
)))
1447 /* No overlay handling: just remove the breakpoint. */
1449 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1450 val
= target_remove_hw_breakpoint (&b
->target_info
);
1452 val
= target_remove_breakpoint (&b
->target_info
);
1456 /* This breakpoint is in an overlay section.
1457 Did we set a breakpoint at the LMA? */
1458 if (!overlay_events_enabled
)
1460 /* Yes -- overlay event support is not active, so we
1461 should have set a breakpoint at the LMA. Remove it.
1463 /* Ignore any failures: if the LMA is in ROM, we will
1464 have already warned when we failed to insert it. */
1465 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1466 target_remove_hw_breakpoint (&b
->overlay_target_info
);
1468 target_remove_breakpoint (&b
->overlay_target_info
);
1470 /* Did we set a breakpoint at the VMA?
1471 If so, we will have marked the breakpoint 'inserted'. */
1474 /* Yes -- remove it. Previously we did not bother to
1475 remove the breakpoint if the section had been
1476 unmapped, but let's not rely on that being safe. We
1477 don't know what the overlay manager might do. */
1478 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1479 val
= target_remove_hw_breakpoint (&b
->target_info
);
1481 /* However, we should remove *software* breakpoints only
1482 if the section is still mapped, or else we overwrite
1483 wrong code with the saved shadow contents. */
1484 else if (section_is_mapped (b
->section
))
1485 val
= target_remove_breakpoint (&b
->target_info
);
1491 /* No -- not inserted, so no need to remove. No error. */
1497 b
->inserted
= (is
== mark_inserted
);
1499 else if (b
->loc_type
== bp_loc_hardware_watchpoint
1500 && breakpoint_enabled (b
->owner
)
1506 b
->inserted
= (is
== mark_inserted
);
1507 /* Walk down the saved value chain. */
1508 for (v
= b
->owner
->val_chain
; v
; v
= value_next (v
))
1510 /* For each memory reference remove the watchpoint
1512 if (VALUE_LVAL (v
) == lval_memory
1513 && ! value_lazy (v
))
1515 struct type
*vtype
= check_typedef (value_type (v
));
1517 if (v
== b
->owner
->val_chain
1518 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1519 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1524 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1525 len
= TYPE_LENGTH (value_type (v
));
1527 if (b
->owner
->type
== bp_read_watchpoint
)
1529 else if (b
->owner
->type
== bp_access_watchpoint
)
1532 val
= target_remove_watchpoint (addr
, len
, type
);
1539 /* Failure to remove any of the hardware watchpoints comes here. */
1540 if ((is
== mark_uninserted
) && (b
->inserted
))
1541 warning (_("Could not remove hardware watchpoint %d."),
1544 else if ((b
->owner
->type
== bp_catch_fork
||
1545 b
->owner
->type
== bp_catch_vfork
||
1546 b
->owner
->type
== bp_catch_exec
)
1547 && breakpoint_enabled (b
->owner
)
1551 switch (b
->owner
->type
)
1554 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1556 case bp_catch_vfork
:
1557 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1560 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1563 warning (_("Internal error, %s line %d."), __FILE__
, __LINE__
);
1568 b
->inserted
= (is
== mark_inserted
);
1574 /* Clear the "inserted" flag in all breakpoints. */
1577 mark_breakpoints_out (void)
1579 struct bp_location
*bpt
;
1581 ALL_BP_LOCATIONS (bpt
)
1585 /* Clear the "inserted" flag in all breakpoints and delete any
1586 breakpoints which should go away between runs of the program.
1588 Plus other such housekeeping that has to be done for breakpoints
1591 Note: this function gets called at the end of a run (by
1592 generic_mourn_inferior) and when a run begins (by
1593 init_wait_for_inferior). */
1598 breakpoint_init_inferior (enum inf_context context
)
1600 struct breakpoint
*b
, *temp
;
1601 struct bp_location
*bpt
;
1603 ALL_BP_LOCATIONS (bpt
)
1606 ALL_BREAKPOINTS_SAFE (b
, temp
)
1611 case bp_watchpoint_scope
:
1613 /* If the call dummy breakpoint is at the entry point it will
1614 cause problems when the inferior is rerun, so we better
1617 Also get rid of scope breakpoints. */
1618 delete_breakpoint (b
);
1622 case bp_hardware_watchpoint
:
1623 case bp_read_watchpoint
:
1624 case bp_access_watchpoint
:
1626 /* Likewise for watchpoints on local expressions. */
1627 if (b
->exp_valid_block
!= NULL
)
1628 delete_breakpoint (b
);
1629 else if (context
== inf_starting
)
1631 /* Reset val field to force reread of starting value
1632 in insert_breakpoints. */
1634 value_free (b
->val
);
1644 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1645 exists at PC. It returns ordinary_breakpoint_here if it's an
1646 ordinary breakpoint, or permanent_breakpoint_here if it's a
1647 permanent breakpoint.
1648 - When continuing from a location with an ordinary breakpoint, we
1649 actually single step once before calling insert_breakpoints.
1650 - When continuing from a localion with a permanent breakpoint, we
1651 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1652 the target, to advance the PC past the breakpoint. */
1654 enum breakpoint_here
1655 breakpoint_here_p (CORE_ADDR pc
)
1657 const struct bp_location
*bpt
;
1658 int any_breakpoint_here
= 0;
1660 ALL_BP_LOCATIONS (bpt
)
1662 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1663 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1666 if ((breakpoint_enabled (bpt
->owner
)
1667 || bpt
->owner
->enable_state
== bp_permanent
)
1668 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1670 if (overlay_debugging
1671 && section_is_overlay (bpt
->section
)
1672 && !section_is_mapped (bpt
->section
))
1673 continue; /* unmapped overlay -- can't be a match */
1674 else if (bpt
->owner
->enable_state
== bp_permanent
)
1675 return permanent_breakpoint_here
;
1677 any_breakpoint_here
= 1;
1681 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1685 /* Returns non-zero if there's a breakpoint inserted at PC, which is
1686 inserted using regular breakpoint_chain/bp_location_chain mechanism.
1687 This does not check for single-step breakpoints, which are
1688 inserted and removed using direct target manipulation. */
1691 regular_breakpoint_inserted_here_p (CORE_ADDR pc
)
1693 const struct bp_location
*bpt
;
1695 ALL_BP_LOCATIONS (bpt
)
1697 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1698 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1702 && bpt
->address
== pc
) /* bp is inserted and matches pc */
1704 if (overlay_debugging
1705 && section_is_overlay (bpt
->section
)
1706 && !section_is_mapped (bpt
->section
))
1707 continue; /* unmapped overlay -- can't be a match */
1715 /* Returns non-zero iff there's either regular breakpoint
1716 or a single step breakpoint inserted at PC. */
1719 breakpoint_inserted_here_p (CORE_ADDR pc
)
1721 if (regular_breakpoint_inserted_here_p (pc
))
1724 if (single_step_breakpoint_inserted_here_p (pc
))
1730 /* This function returns non-zero iff there is a software breakpoint
1734 software_breakpoint_inserted_here_p (CORE_ADDR pc
)
1736 const struct bp_location
*bpt
;
1737 int any_breakpoint_here
= 0;
1739 ALL_BP_LOCATIONS (bpt
)
1741 if (bpt
->loc_type
!= bp_loc_software_breakpoint
)
1745 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1747 if (overlay_debugging
1748 && section_is_overlay (bpt
->section
)
1749 && !section_is_mapped (bpt
->section
))
1750 continue; /* unmapped overlay -- can't be a match */
1756 /* Also check for software single-step breakpoints. */
1757 if (single_step_breakpoint_inserted_here_p (pc
))
1763 /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
1764 PC is valid for process/thread PTID. */
1767 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1769 const struct bp_location
*bpt
;
1772 thread
= pid_to_thread_id (ptid
);
1774 ALL_BP_LOCATIONS (bpt
)
1776 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1777 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1780 if ((breakpoint_enabled (bpt
->owner
)
1781 || bpt
->owner
->enable_state
== bp_permanent
)
1782 && bpt
->address
== pc
1783 && (bpt
->owner
->thread
== -1 || bpt
->owner
->thread
== thread
))
1785 if (overlay_debugging
1786 && section_is_overlay (bpt
->section
)
1787 && !section_is_mapped (bpt
->section
))
1788 continue; /* unmapped overlay -- can't be a match */
1798 /* bpstat stuff. External routines' interfaces are documented
1802 ep_is_catchpoint (struct breakpoint
*ep
)
1805 (ep
->type
== bp_catch_load
)
1806 || (ep
->type
== bp_catch_unload
)
1807 || (ep
->type
== bp_catch_fork
)
1808 || (ep
->type
== bp_catch_vfork
)
1809 || (ep
->type
== bp_catch_exec
);
1811 /* ??rehrauer: Add more kinds here, as are implemented... */
1815 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1818 (ep
->type
== bp_catch_load
)
1819 || (ep
->type
== bp_catch_unload
);
1823 bpstat_free (bpstat bs
)
1825 if (bs
->old_val
!= NULL
)
1826 value_free (bs
->old_val
);
1827 free_command_lines (&bs
->commands
);
1831 /* Clear a bpstat so that it says we are not at any breakpoint.
1832 Also free any storage that is part of a bpstat. */
1835 bpstat_clear (bpstat
*bsp
)
1852 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1853 is part of the bpstat is copied as well. */
1856 bpstat_copy (bpstat bs
)
1860 bpstat retval
= NULL
;
1865 for (; bs
!= NULL
; bs
= bs
->next
)
1867 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1868 memcpy (tmp
, bs
, sizeof (*tmp
));
1869 if (bs
->commands
!= NULL
)
1870 tmp
->commands
= copy_command_lines (bs
->commands
);
1871 if (bs
->old_val
!= NULL
)
1872 tmp
->old_val
= value_copy (bs
->old_val
);
1875 /* This is the first thing in the chain. */
1885 /* Find the bpstat associated with this breakpoint */
1888 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1893 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1895 if (bsp
->breakpoint_at
&& bsp
->breakpoint_at
->owner
== breakpoint
)
1901 /* Find a step_resume breakpoint associated with this bpstat.
1902 (If there are multiple step_resume bp's on the list, this function
1903 will arbitrarily pick one.)
1905 It is an error to use this function if BPSTAT doesn't contain a
1906 step_resume breakpoint.
1908 See wait_for_inferior's use of this function. */
1910 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1914 gdb_assert (bsp
!= NULL
);
1916 current_thread
= pid_to_thread_id (inferior_ptid
);
1918 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1920 if ((bsp
->breakpoint_at
!= NULL
) &&
1921 (bsp
->breakpoint_at
->owner
->type
== bp_step_resume
) &&
1922 (bsp
->breakpoint_at
->owner
->thread
== current_thread
||
1923 bsp
->breakpoint_at
->owner
->thread
== -1))
1924 return bsp
->breakpoint_at
->owner
;
1927 internal_error (__FILE__
, __LINE__
, _("No step_resume breakpoint found."));
1931 /* Put in *NUM the breakpoint number of the first breakpoint we are stopped
1932 at. *BSP upon return is a bpstat which points to the remaining
1933 breakpoints stopped at (but which is not guaranteed to be good for
1934 anything but further calls to bpstat_num).
1935 Return 0 if passed a bpstat which does not indicate any breakpoints.
1936 Return -1 if stopped at a breakpoint that has been deleted since
1938 Return 1 otherwise. */
1941 bpstat_num (bpstat
*bsp
, int *num
)
1943 struct breakpoint
*b
;
1946 return 0; /* No more breakpoint values */
1948 /* We assume we'll never have several bpstats that
1949 correspond to a single breakpoint -- otherwise,
1950 this function might return the same number more
1951 than once and this will look ugly. */
1952 b
= (*bsp
)->breakpoint_at
? (*bsp
)->breakpoint_at
->owner
: NULL
;
1953 *bsp
= (*bsp
)->next
;
1955 return -1; /* breakpoint that's been deleted since */
1957 *num
= b
->number
; /* We have its number */
1961 /* Modify BS so that the actions will not be performed. */
1964 bpstat_clear_actions (bpstat bs
)
1966 for (; bs
!= NULL
; bs
= bs
->next
)
1968 free_command_lines (&bs
->commands
);
1969 if (bs
->old_val
!= NULL
)
1971 value_free (bs
->old_val
);
1977 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1979 cleanup_executing_breakpoints (void *ignore
)
1981 executing_breakpoint_commands
= 0;
1984 /* Execute all the commands associated with all the breakpoints at this
1985 location. Any of these commands could cause the process to proceed
1986 beyond this point, etc. We look out for such changes by checking
1987 the global "breakpoint_proceeded" after each command. */
1990 bpstat_do_actions (bpstat
*bsp
)
1993 struct cleanup
*old_chain
;
1995 /* Avoid endless recursion if a `source' command is contained
1997 if (executing_breakpoint_commands
)
2000 executing_breakpoint_commands
= 1;
2001 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
2004 /* Note that (as of this writing), our callers all appear to
2005 be passing us the address of global stop_bpstat. And, if
2006 our calls to execute_control_command cause the inferior to
2007 proceed, that global (and hence, *bsp) will change.
2009 We must be careful to not touch *bsp unless the inferior
2010 has not proceeded. */
2012 /* This pointer will iterate over the list of bpstat's. */
2015 breakpoint_proceeded
= 0;
2016 for (; bs
!= NULL
; bs
= bs
->next
)
2018 struct command_line
*cmd
;
2019 struct cleanup
*this_cmd_tree_chain
;
2021 /* Take ownership of the BSP's command tree, if it has one.
2023 The command tree could legitimately contain commands like
2024 'step' and 'next', which call clear_proceed_status, which
2025 frees stop_bpstat's command tree. To make sure this doesn't
2026 free the tree we're executing out from under us, we need to
2027 take ownership of the tree ourselves. Since a given bpstat's
2028 commands are only executed once, we don't need to copy it; we
2029 can clear the pointer in the bpstat, and make sure we free
2030 the tree when we're done. */
2033 this_cmd_tree_chain
= make_cleanup_free_command_lines (&cmd
);
2037 execute_control_command (cmd
);
2039 if (breakpoint_proceeded
)
2045 /* We can free this command tree now. */
2046 do_cleanups (this_cmd_tree_chain
);
2048 if (breakpoint_proceeded
)
2049 /* The inferior is proceeded by the command; bomb out now.
2050 The bpstat chain has been blown away by wait_for_inferior.
2051 But since execution has stopped again, there is a new bpstat
2052 to look at, so start over. */
2055 do_cleanups (old_chain
);
2058 /* This is the normal print function for a bpstat. In the future,
2059 much of this logic could (should?) be moved to bpstat_stop_status,
2060 by having it set different print_it values.
2062 Current scheme: When we stop, bpstat_print() is called. It loops
2063 through the bpstat list of things causing this stop, calling the
2064 print_bp_stop_message function on each one. The behavior of the
2065 print_bp_stop_message function depends on the print_it field of
2066 bpstat. If such field so indicates, call this function here.
2068 Return values from this routine (ultimately used by bpstat_print()
2069 and normal_stop() to decide what to do):
2070 PRINT_NOTHING: Means we already printed all we needed to print,
2071 don't print anything else.
2072 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
2073 that something to be followed by a location.
2074 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
2075 that something to be followed by a location.
2076 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
2079 static enum print_stop_action
2080 print_it_typical (bpstat bs
)
2082 struct cleanup
*old_chain
, *ui_out_chain
;
2083 struct breakpoint
*b
;
2084 const struct bp_location
*bl
;
2085 struct ui_stream
*stb
;
2086 stb
= ui_out_stream_new (uiout
);
2087 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
2088 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
2089 which has since been deleted. */
2090 if (bs
->breakpoint_at
== NULL
)
2091 return PRINT_UNKNOWN
;
2092 bl
= bs
->breakpoint_at
;
2098 case bp_hardware_breakpoint
:
2099 if (bl
->address
!= bl
->requested_address
)
2100 breakpoint_adjustment_warning (bl
->requested_address
,
2103 annotate_breakpoint (b
->number
);
2104 ui_out_text (uiout
, "\nBreakpoint ");
2105 if (ui_out_is_mi_like_p (uiout
))
2106 ui_out_field_string (uiout
, "reason",
2107 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT
));
2108 ui_out_field_int (uiout
, "bkptno", b
->number
);
2109 ui_out_text (uiout
, ", ");
2110 return PRINT_SRC_AND_LOC
;
2113 case bp_shlib_event
:
2114 /* Did we stop because the user set the stop_on_solib_events
2115 variable? (If so, we report this as a generic, "Stopped due
2116 to shlib event" message.) */
2117 printf_filtered (_("Stopped due to shared library event\n"));
2118 return PRINT_NOTHING
;
2121 case bp_thread_event
:
2122 /* Not sure how we will get here.
2123 GDB should not stop for these breakpoints. */
2124 printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
2125 return PRINT_NOTHING
;
2128 case bp_overlay_event
:
2129 /* By analogy with the thread event, GDB should not stop for these. */
2130 printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
2131 return PRINT_NOTHING
;
2135 annotate_catchpoint (b
->number
);
2136 printf_filtered (_("\nCatchpoint %d (loaded %s), "),
2138 b
->triggered_dll_pathname
);
2139 return PRINT_SRC_AND_LOC
;
2142 case bp_catch_unload
:
2143 annotate_catchpoint (b
->number
);
2144 printf_filtered (_("\nCatchpoint %d (unloaded %s), "),
2146 b
->triggered_dll_pathname
);
2147 return PRINT_SRC_AND_LOC
;
2151 annotate_catchpoint (b
->number
);
2152 printf_filtered (_("\nCatchpoint %d (forked process %d), "),
2154 b
->forked_inferior_pid
);
2155 return PRINT_SRC_AND_LOC
;
2158 case bp_catch_vfork
:
2159 annotate_catchpoint (b
->number
);
2160 printf_filtered (_("\nCatchpoint %d (vforked process %d), "),
2162 b
->forked_inferior_pid
);
2163 return PRINT_SRC_AND_LOC
;
2167 annotate_catchpoint (b
->number
);
2168 printf_filtered (_("\nCatchpoint %d (exec'd %s), "),
2171 return PRINT_SRC_AND_LOC
;
2175 case bp_hardware_watchpoint
:
2176 if (bs
->old_val
!= NULL
)
2178 annotate_watchpoint (b
->number
);
2179 if (ui_out_is_mi_like_p (uiout
))
2182 async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER
));
2184 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2185 ui_out_text (uiout
, "\nOld value = ");
2186 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2187 ui_out_field_stream (uiout
, "old", stb
);
2188 ui_out_text (uiout
, "\nNew value = ");
2189 value_print (b
->val
, stb
->stream
, 0, Val_pretty_default
);
2190 ui_out_field_stream (uiout
, "new", stb
);
2191 do_cleanups (ui_out_chain
);
2192 ui_out_text (uiout
, "\n");
2193 value_free (bs
->old_val
);
2196 /* More than one watchpoint may have been triggered. */
2197 return PRINT_UNKNOWN
;
2200 case bp_read_watchpoint
:
2201 if (ui_out_is_mi_like_p (uiout
))
2204 async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER
));
2206 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2207 ui_out_text (uiout
, "\nValue = ");
2208 value_print (b
->val
, stb
->stream
, 0, Val_pretty_default
);
2209 ui_out_field_stream (uiout
, "value", stb
);
2210 do_cleanups (ui_out_chain
);
2211 ui_out_text (uiout
, "\n");
2212 return PRINT_UNKNOWN
;
2215 case bp_access_watchpoint
:
2216 if (bs
->old_val
!= NULL
)
2218 annotate_watchpoint (b
->number
);
2219 if (ui_out_is_mi_like_p (uiout
))
2222 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2224 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2225 ui_out_text (uiout
, "\nOld value = ");
2226 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2227 ui_out_field_stream (uiout
, "old", stb
);
2228 value_free (bs
->old_val
);
2230 ui_out_text (uiout
, "\nNew value = ");
2235 if (ui_out_is_mi_like_p (uiout
))
2238 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2239 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2240 ui_out_text (uiout
, "\nValue = ");
2242 value_print (b
->val
, stb
->stream
, 0,Val_pretty_default
);
2243 ui_out_field_stream (uiout
, "new", stb
);
2244 do_cleanups (ui_out_chain
);
2245 ui_out_text (uiout
, "\n");
2246 return PRINT_UNKNOWN
;
2249 /* Fall through, we don't deal with these types of breakpoints
2253 if (ui_out_is_mi_like_p (uiout
))
2256 async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED
));
2257 return PRINT_UNKNOWN
;
2261 if (ui_out_is_mi_like_p (uiout
))
2264 async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED
));
2265 return PRINT_UNKNOWN
;
2270 case bp_longjmp_resume
:
2271 case bp_step_resume
:
2272 case bp_watchpoint_scope
:
2275 return PRINT_UNKNOWN
;
2279 /* Generic routine for printing messages indicating why we
2280 stopped. The behavior of this function depends on the value
2281 'print_it' in the bpstat structure. Under some circumstances we
2282 may decide not to print anything here and delegate the task to
2285 static enum print_stop_action
2286 print_bp_stop_message (bpstat bs
)
2288 switch (bs
->print_it
)
2291 /* Nothing should be printed for this bpstat entry. */
2292 return PRINT_UNKNOWN
;
2296 /* We still want to print the frame, but we already printed the
2297 relevant messages. */
2298 return PRINT_SRC_AND_LOC
;
2301 case print_it_normal
:
2303 const struct bp_location
*bl
= bs
->breakpoint_at
;
2304 struct breakpoint
*b
= bl
? bl
->owner
: NULL
;
2306 /* Normal case. Call the breakpoint's print_it method, or
2307 print_it_typical. */
2308 /* FIXME: how breakpoint can ever be NULL here? */
2309 if (b
!= NULL
&& b
->ops
!= NULL
&& b
->ops
->print_it
!= NULL
)
2310 return b
->ops
->print_it (b
);
2312 return print_it_typical (bs
);
2317 internal_error (__FILE__
, __LINE__
,
2318 _("print_bp_stop_message: unrecognized enum value"));
2323 /* Print a message indicating what happened. This is called from
2324 normal_stop(). The input to this routine is the head of the bpstat
2325 list - a list of the eventpoints that caused this stop. This
2326 routine calls the generic print routine for printing a message
2327 about reasons for stopping. This will print (for example) the
2328 "Breakpoint n," part of the output. The return value of this
2331 PRINT_UNKNOWN: Means we printed nothing
2332 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2333 code to print the location. An example is
2334 "Breakpoint 1, " which should be followed by
2336 PRINT_SRC_ONLY: Means we printed something, but there is no need
2337 to also print the location part of the message.
2338 An example is the catch/throw messages, which
2339 don't require a location appended to the end.
2340 PRINT_NOTHING: We have done some printing and we don't need any
2341 further info to be printed.*/
2343 enum print_stop_action
2344 bpstat_print (bpstat bs
)
2348 /* Maybe another breakpoint in the chain caused us to stop.
2349 (Currently all watchpoints go on the bpstat whether hit or not.
2350 That probably could (should) be changed, provided care is taken
2351 with respect to bpstat_explains_signal). */
2352 for (; bs
; bs
= bs
->next
)
2354 val
= print_bp_stop_message (bs
);
2355 if (val
== PRINT_SRC_ONLY
2356 || val
== PRINT_SRC_AND_LOC
2357 || val
== PRINT_NOTHING
)
2361 /* We reached the end of the chain, or we got a null BS to start
2362 with and nothing was printed. */
2363 return PRINT_UNKNOWN
;
2366 /* Evaluate the expression EXP and return 1 if value is zero.
2367 This is used inside a catch_errors to evaluate the breakpoint condition.
2368 The argument is a "struct expression *" that has been cast to char * to
2369 make it pass through catch_errors. */
2372 breakpoint_cond_eval (void *exp
)
2374 struct value
*mark
= value_mark ();
2375 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2376 value_free_to_mark (mark
);
2380 /* Allocate a new bpstat and chain it to the current one. */
2383 bpstat_alloc (const struct bp_location
*bl
, bpstat cbs
/* Current "bs" value */ )
2387 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2389 bs
->breakpoint_at
= bl
;
2390 /* If the condition is false, etc., don't do the commands. */
2391 bs
->commands
= NULL
;
2393 bs
->print_it
= print_it_normal
;
2397 /* The target has stopped with waitstatus WS. Check if any hardware
2398 watchpoints have triggered, according to the target. */
2401 watchpoints_triggered (struct target_waitstatus
*ws
)
2403 int stopped_by_watchpoint
= STOPPED_BY_WATCHPOINT (*ws
);
2405 struct breakpoint
*b
;
2407 if (!stopped_by_watchpoint
)
2409 /* We were not stopped by a watchpoint. Mark all watchpoints
2410 as not triggered. */
2412 if (b
->type
== bp_hardware_watchpoint
2413 || b
->type
== bp_read_watchpoint
2414 || b
->type
== bp_access_watchpoint
)
2415 b
->watchpoint_triggered
= watch_triggered_no
;
2420 if (!target_stopped_data_address (¤t_target
, &addr
))
2422 /* We were stopped by a watchpoint, but we don't know where.
2423 Mark all watchpoints as unknown. */
2425 if (b
->type
== bp_hardware_watchpoint
2426 || b
->type
== bp_read_watchpoint
2427 || b
->type
== bp_access_watchpoint
)
2428 b
->watchpoint_triggered
= watch_triggered_unknown
;
2430 return stopped_by_watchpoint
;
2433 /* The target could report the data address. Mark watchpoints
2434 affected by this data address as triggered, and all others as not
2438 if (b
->type
== bp_hardware_watchpoint
2439 || b
->type
== bp_read_watchpoint
2440 || b
->type
== bp_access_watchpoint
)
2444 b
->watchpoint_triggered
= watch_triggered_no
;
2445 for (v
= b
->val_chain
; v
; v
= value_next (v
))
2447 if (VALUE_LVAL (v
) == lval_memory
&& ! value_lazy (v
))
2449 struct type
*vtype
= check_typedef (value_type (v
));
2451 if (v
== b
->val_chain
2452 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2453 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2457 vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
2458 /* Exact match not required. Within range is
2461 && addr
< vaddr
+ TYPE_LENGTH (value_type (v
)))
2463 b
->watchpoint_triggered
= watch_triggered_yes
;
2474 /* Possible return values for watchpoint_check (this can't be an enum
2475 because of check_errors). */
2476 /* The watchpoint has been deleted. */
2477 #define WP_DELETED 1
2478 /* The value has changed. */
2479 #define WP_VALUE_CHANGED 2
2480 /* The value has not changed. */
2481 #define WP_VALUE_NOT_CHANGED 3
2483 #define BP_TEMPFLAG 1
2484 #define BP_HARDWAREFLAG 2
2486 /* Check watchpoint condition. */
2489 watchpoint_check (void *p
)
2491 bpstat bs
= (bpstat
) p
;
2492 struct breakpoint
*b
;
2493 struct frame_info
*fr
;
2494 int within_current_scope
;
2496 b
= bs
->breakpoint_at
->owner
;
2498 if (b
->exp_valid_block
== NULL
)
2499 within_current_scope
= 1;
2502 /* There is no current frame at this moment. If we're going to have
2503 any chance of handling watchpoints on local variables, we'll need
2504 the frame chain (so we can determine if we're in scope). */
2505 reinit_frame_cache ();
2506 fr
= frame_find_by_id (b
->watchpoint_frame
);
2507 within_current_scope
= (fr
!= NULL
);
2509 /* If we've gotten confused in the unwinder, we might have
2510 returned a frame that can't describe this variable. */
2511 if (within_current_scope
2512 && block_function (b
->exp_valid_block
) != get_frame_function (fr
))
2513 within_current_scope
= 0;
2515 /* in_function_epilogue_p() returns a non-zero value if we're still
2516 in the function but the stack frame has already been invalidated.
2517 Since we can't rely on the values of local variables after the
2518 stack has been destroyed, we are treating the watchpoint in that
2519 state as `not changed' without further checking.
2521 vinschen/2003-09-04: The former implementation left out the case
2522 that the watchpoint frame couldn't be found by frame_find_by_id()
2523 because the current PC is currently in an epilogue. Calling
2524 gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */
2525 if ((!within_current_scope
|| fr
== get_current_frame ())
2526 && gdbarch_in_function_epilogue_p (current_gdbarch
, read_pc ()))
2527 return WP_VALUE_NOT_CHANGED
;
2528 if (fr
&& within_current_scope
)
2529 /* If we end up stopping, the current frame will get selected
2530 in normal_stop. So this call to select_frame won't affect
2535 if (within_current_scope
)
2537 /* We use value_{,free_to_}mark because it could be a
2538 *long* time before we return to the command level and
2539 call free_all_values. We can't call free_all_values because
2540 we might be in the middle of evaluating a function call. */
2542 struct value
*mark
= value_mark ();
2543 struct value
*new_val
= evaluate_expression (b
->exp
);
2544 if (!value_equal (b
->val
, new_val
))
2546 release_value (new_val
);
2547 value_free_to_mark (mark
);
2548 bs
->old_val
= b
->val
;
2550 /* We will stop here */
2551 return WP_VALUE_CHANGED
;
2555 /* Nothing changed, don't do anything. */
2556 value_free_to_mark (mark
);
2557 /* We won't stop here */
2558 return WP_VALUE_NOT_CHANGED
;
2563 /* This seems like the only logical thing to do because
2564 if we temporarily ignored the watchpoint, then when
2565 we reenter the block in which it is valid it contains
2566 garbage (in the case of a function, it may have two
2567 garbage values, one before and one after the prologue).
2568 So we can't even detect the first assignment to it and
2569 watch after that (since the garbage may or may not equal
2570 the first value assigned). */
2571 /* We print all the stop information in print_it_typical(), but
2572 in this case, by the time we call print_it_typical() this bp
2573 will be deleted already. So we have no choice but print the
2574 information here. */
2575 if (ui_out_is_mi_like_p (uiout
))
2577 (uiout
, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE
));
2578 ui_out_text (uiout
, "\nWatchpoint ");
2579 ui_out_field_int (uiout
, "wpnum", b
->number
);
2580 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2581 which its expression is valid.\n");
2583 if (b
->related_breakpoint
)
2584 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2585 b
->disposition
= disp_del_at_next_stop
;
2591 /* Get a bpstat associated with having just stopped at address
2592 BP_ADDR in thread PTID.
2594 Determine whether we stopped at a breakpoint, etc, or whether we
2595 don't understand this stop. Result is a chain of bpstat's such that:
2597 if we don't understand the stop, the result is a null pointer.
2599 if we understand why we stopped, the result is not null.
2601 Each element of the chain refers to a particular breakpoint or
2602 watchpoint at which we have stopped. (We may have stopped for
2603 several reasons concurrently.)
2605 Each element of the chain has valid next, breakpoint_at,
2606 commands, FIXME??? fields. */
2609 bpstat_stop_status (CORE_ADDR bp_addr
, ptid_t ptid
)
2611 struct breakpoint
*b
= NULL
;
2612 const struct bp_location
*bl
;
2613 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2614 int real_breakpoint
= 0;
2615 /* Root of the chain of bpstat's */
2616 struct bpstats root_bs
[1];
2617 /* Pointer to the last thing in the chain currently. */
2618 bpstat bs
= root_bs
;
2619 int thread_id
= pid_to_thread_id (ptid
);
2621 ALL_BP_LOCATIONS (bl
)
2625 if (!breakpoint_enabled (b
) && b
->enable_state
!= bp_permanent
)
2628 if (b
->type
!= bp_watchpoint
2629 && b
->type
!= bp_hardware_watchpoint
2630 && b
->type
!= bp_read_watchpoint
2631 && b
->type
!= bp_access_watchpoint
2632 && b
->type
!= bp_hardware_breakpoint
2633 && b
->type
!= bp_catch_fork
2634 && b
->type
!= bp_catch_vfork
2635 && b
->type
!= bp_catch_exec
) /* a non-watchpoint bp */
2637 if (bl
->address
!= bp_addr
) /* address doesn't match */
2639 if (overlay_debugging
/* unmapped overlay section */
2640 && section_is_overlay (bl
->section
)
2641 && !section_is_mapped (bl
->section
))
2645 /* Continuable hardware watchpoints are treated as non-existent if the
2646 reason we stopped wasn't a hardware watchpoint (we didn't stop on
2647 some data address). Otherwise gdb won't stop on a break instruction
2648 in the code (not from a breakpoint) when a hardware watchpoint has
2649 been defined. Also skip watchpoints which we know did not trigger
2650 (did not match the data address). */
2652 if ((b
->type
== bp_hardware_watchpoint
2653 || b
->type
== bp_read_watchpoint
2654 || b
->type
== bp_access_watchpoint
)
2655 && b
->watchpoint_triggered
== watch_triggered_no
)
2658 if (b
->type
== bp_hardware_breakpoint
)
2660 if (bl
->address
!= bp_addr
)
2662 if (overlay_debugging
/* unmapped overlay section */
2663 && section_is_overlay (bl
->section
)
2664 && !section_is_mapped (bl
->section
))
2668 /* Is this a catchpoint of a load or unload? If so, did we
2669 get a load or unload of the specified library? If not,
2671 if ((b
->type
== bp_catch_load
)
2672 #if defined(SOLIB_HAVE_LOAD_EVENT)
2673 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2674 || ((b
->dll_pathname
!= NULL
)
2675 && (strcmp (b
->dll_pathname
,
2676 SOLIB_LOADED_LIBRARY_PATHNAME (
2677 PIDGET (inferior_ptid
)))
2683 if ((b
->type
== bp_catch_unload
)
2684 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2685 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2686 || ((b
->dll_pathname
!= NULL
)
2687 && (strcmp (b
->dll_pathname
,
2688 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2689 PIDGET (inferior_ptid
)))
2695 if ((b
->type
== bp_catch_fork
)
2696 && !inferior_has_forked (PIDGET (inferior_ptid
),
2697 &b
->forked_inferior_pid
))
2700 if ((b
->type
== bp_catch_vfork
)
2701 && !inferior_has_vforked (PIDGET (inferior_ptid
),
2702 &b
->forked_inferior_pid
))
2705 if ((b
->type
== bp_catch_exec
)
2706 && !inferior_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2709 /* Come here if it's a watchpoint, or if the break address matches */
2711 bs
= bpstat_alloc (bl
, bs
); /* Alloc a bpstat to explain stop */
2713 /* Watchpoints may change this, if not found to have triggered. */
2717 if (b
->type
== bp_watchpoint
2718 || b
->type
== bp_read_watchpoint
2719 || b
->type
== bp_access_watchpoint
2720 || b
->type
== bp_hardware_watchpoint
)
2724 int must_check_value
= 0;
2726 if (b
->type
== bp_watchpoint
)
2727 /* For a software watchpoint, we must always check the
2729 must_check_value
= 1;
2730 else if (b
->watchpoint_triggered
== watch_triggered_yes
)
2731 /* We have a hardware watchpoint (read, write, or access)
2732 and the target earlier reported an address watched by
2734 must_check_value
= 1;
2735 else if (b
->watchpoint_triggered
== watch_triggered_unknown
2736 && b
->type
== bp_hardware_watchpoint
)
2737 /* We were stopped by a hardware watchpoint, but the target could
2738 not report the data address. We must check the watchpoint's
2739 value. Access and read watchpoints are out of luck; without
2740 a data address, we can't figure it out. */
2741 must_check_value
= 1;
2743 if (must_check_value
)
2745 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2747 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2748 int e
= catch_errors (watchpoint_check
, bs
, message
,
2750 do_cleanups (cleanups
);
2754 /* We've already printed what needs to be printed. */
2755 bs
->print_it
= print_it_done
;
2758 case WP_VALUE_CHANGED
:
2759 if (b
->type
== bp_read_watchpoint
)
2761 /* Don't stop: read watchpoints shouldn't fire if
2762 the value has changed. This is for targets
2763 which cannot set read-only watchpoints. */
2764 bs
->print_it
= print_it_noop
;
2770 case WP_VALUE_NOT_CHANGED
:
2771 if (b
->type
== bp_hardware_watchpoint
2772 || b
->type
== bp_watchpoint
)
2774 /* Don't stop: write watchpoints shouldn't fire if
2775 the value hasn't changed. */
2776 bs
->print_it
= print_it_noop
;
2786 /* Error from catch_errors. */
2787 printf_filtered (_("Watchpoint %d deleted.\n"), b
->number
);
2788 if (b
->related_breakpoint
)
2789 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2790 b
->disposition
= disp_del_at_next_stop
;
2791 /* We've already printed what needs to be printed. */
2792 bs
->print_it
= print_it_done
;
2796 else /* must_check_value == 0 */
2798 /* This is a case where some watchpoint(s) triggered, but
2799 not at the address of this watchpoint, or else no
2800 watchpoint triggered after all. So don't print
2801 anything for this watchpoint. */
2802 bs
->print_it
= print_it_noop
;
2809 /* By definition, an encountered breakpoint is a triggered
2813 real_breakpoint
= 1;
2816 if (frame_id_p (b
->frame_id
)
2817 && !frame_id_eq (b
->frame_id
, get_frame_id (get_current_frame ())))
2821 int value_is_zero
= 0;
2823 /* If this is a scope breakpoint, mark the associated
2824 watchpoint as triggered so that we will handle the
2825 out-of-scope event. We'll get to the watchpoint next
2827 if (b
->type
== bp_watchpoint_scope
)
2828 b
->related_breakpoint
->watchpoint_triggered
= watch_triggered_yes
;
2832 /* Need to select the frame, with all that implies
2833 so that the conditions will have the right context. */
2834 select_frame (get_current_frame ());
2836 = catch_errors (breakpoint_cond_eval
, (bl
->cond
),
2837 "Error in testing breakpoint condition:\n",
2839 /* FIXME-someday, should give breakpoint # */
2842 if (bl
->cond
&& value_is_zero
)
2845 /* Don't consider this a hit. */
2848 else if (b
->thread
!= -1 && b
->thread
!= thread_id
)
2851 /* Don't consider this a hit. */
2854 else if (b
->ignore_count
> 0)
2857 annotate_ignore_count_change ();
2860 else if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
2861 /* We do not stop for these. */
2865 /* We will stop here */
2866 if (b
->disposition
== disp_disable
)
2867 b
->enable_state
= bp_disabled
;
2870 bs
->commands
= b
->commands
;
2872 (strcmp ("silent", bs
->commands
->line
) == 0
2873 || (xdb_commands
&& strcmp ("Q", bs
->commands
->line
) == 0)))
2875 bs
->commands
= bs
->commands
->next
;
2878 bs
->commands
= copy_command_lines (bs
->commands
);
2881 /* Print nothing for this entry if we dont stop or if we dont print. */
2882 if (bs
->stop
== 0 || bs
->print
== 0)
2883 bs
->print_it
= print_it_noop
;
2886 bs
->next
= NULL
; /* Terminate the chain */
2887 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2889 /* If we aren't stopping, the value of some hardware watchpoint may
2890 not have changed, but the intermediate memory locations we are
2891 watching may have. Don't bother if we're stopping; this will get
2893 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2898 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2900 && (bs
->breakpoint_at
->owner
->type
== bp_hardware_watchpoint
2901 || bs
->breakpoint_at
->owner
->type
== bp_read_watchpoint
2902 || bs
->breakpoint_at
->owner
->type
== bp_access_watchpoint
))
2904 remove_breakpoints ();
2905 insert_breakpoints ();
2909 return root_bs
->next
;
2912 /* Tell what to do about this bpstat. */
2914 bpstat_what (bpstat bs
)
2916 /* Classify each bpstat as one of the following. */
2919 /* This bpstat element has no effect on the main_action. */
2922 /* There was a watchpoint, stop but don't print. */
2925 /* There was a watchpoint, stop and print. */
2928 /* There was a breakpoint but we're not stopping. */
2931 /* There was a breakpoint, stop but don't print. */
2934 /* There was a breakpoint, stop and print. */
2937 /* We hit the longjmp breakpoint. */
2940 /* We hit the longjmp_resume breakpoint. */
2943 /* We hit the step_resume breakpoint. */
2946 /* We hit the shared library event breakpoint. */
2949 /* We caught a shared library event. */
2952 /* This is just used to count how many enums there are. */
2956 /* Here is the table which drives this routine. So that we can
2957 format it pretty, we define some abbreviations for the
2958 enum bpstat_what codes. */
2959 #define kc BPSTAT_WHAT_KEEP_CHECKING
2960 #define ss BPSTAT_WHAT_STOP_SILENT
2961 #define sn BPSTAT_WHAT_STOP_NOISY
2962 #define sgl BPSTAT_WHAT_SINGLE
2963 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2964 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2965 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2966 #define sr BPSTAT_WHAT_STEP_RESUME
2967 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2968 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2970 /* "Can't happen." Might want to print an error message.
2971 abort() is not out of the question, but chances are GDB is just
2972 a bit confused, not unusable. */
2973 #define err BPSTAT_WHAT_STOP_NOISY
2975 /* Given an old action and a class, come up with a new action. */
2976 /* One interesting property of this table is that wp_silent is the same
2977 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2978 after stopping, the check for whether to step over a breakpoint
2979 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2980 reference to how we stopped. We retain separate wp_silent and
2981 bp_silent codes in case we want to change that someday.
2983 Another possibly interesting property of this table is that
2984 there's a partial ordering, priority-like, of the actions. Once
2985 you've decided that some action is appropriate, you'll never go
2986 back and decide something of a lower priority is better. The
2989 kc < clr sgl shl shlr slr sn sr ss
2990 sgl < clrs shl shlr slr sn sr ss
2991 slr < err shl shlr sn sr ss
2992 clr < clrs err shl shlr sn sr ss
2993 clrs < err shl shlr sn sr ss
3000 What I think this means is that we don't need a damned table
3001 here. If you just put the rows and columns in the right order,
3002 it'd look awfully regular. We could simply walk the bpstat list
3003 and choose the highest priority action we find, with a little
3004 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
3005 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
3006 is messy anyway). */
3008 /* step_resume entries: a step resume breakpoint overrides another
3009 breakpoint of signal handling (see comment in wait_for_inferior
3010 at where we set the step_resume breakpoint). */
3012 static const enum bpstat_what_main_action
3013 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
3016 /* kc ss sn sgl slr clr clrs sr shl shlr
3019 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, shl
, shlr
},
3021 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3023 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3025 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, shl
, shlr
},
3027 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3029 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3031 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, shl
, shlr
},
3033 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, shl
, shlr
},
3035 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
},
3037 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, sr
, shl
, shlr
},
3039 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, sr
, shlr
, shlr
}
3054 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
3055 struct bpstat_what retval
;
3057 retval
.call_dummy
= 0;
3058 for (; bs
!= NULL
; bs
= bs
->next
)
3060 enum class bs_class
= no_effect
;
3061 if (bs
->breakpoint_at
== NULL
)
3062 /* I suspect this can happen if it was a momentary breakpoint
3063 which has since been deleted. */
3065 switch (bs
->breakpoint_at
->owner
->type
)
3071 case bp_hardware_breakpoint
:
3077 bs_class
= bp_noisy
;
3079 bs_class
= bp_silent
;
3082 bs_class
= bp_nostop
;
3085 case bp_hardware_watchpoint
:
3086 case bp_read_watchpoint
:
3087 case bp_access_watchpoint
:
3091 bs_class
= wp_noisy
;
3093 bs_class
= wp_silent
;
3096 /* There was a watchpoint, but we're not stopping.
3097 This requires no further action. */
3098 bs_class
= no_effect
;
3101 bs_class
= long_jump
;
3103 case bp_longjmp_resume
:
3104 bs_class
= long_resume
;
3106 case bp_step_resume
:
3109 bs_class
= step_resume
;
3112 /* It is for the wrong frame. */
3113 bs_class
= bp_nostop
;
3115 case bp_watchpoint_scope
:
3116 bs_class
= bp_nostop
;
3118 case bp_shlib_event
:
3119 bs_class
= shlib_event
;
3121 case bp_thread_event
:
3122 case bp_overlay_event
:
3123 bs_class
= bp_nostop
;
3126 case bp_catch_unload
:
3127 /* Only if this catchpoint triggered should we cause the
3128 step-out-of-dld behaviour. Otherwise, we ignore this
3131 bs_class
= catch_shlib_event
;
3133 bs_class
= no_effect
;
3136 case bp_catch_vfork
:
3141 bs_class
= bp_noisy
;
3143 bs_class
= bp_silent
;
3146 /* There was a catchpoint, but we're not stopping.
3147 This requires no further action. */
3148 bs_class
= no_effect
;
3151 /* Make sure the action is stop (silent or noisy),
3152 so infrun.c pops the dummy frame. */
3153 bs_class
= bp_silent
;
3154 retval
.call_dummy
= 1;
3157 current_action
= table
[(int) bs_class
][(int) current_action
];
3159 retval
.main_action
= current_action
;
3163 /* Nonzero if we should step constantly (e.g. watchpoints on machines
3164 without hardware support). This isn't related to a specific bpstat,
3165 just to things like whether watchpoints are set. */
3168 bpstat_should_step (void)
3170 struct breakpoint
*b
;
3172 if (breakpoint_enabled (b
) && b
->type
== bp_watchpoint
)
3177 /* Nonzero if there are enabled hardware watchpoints. */
3179 bpstat_have_active_hw_watchpoints (void)
3181 const struct bp_location
*bpt
;
3182 ALL_BP_LOCATIONS (bpt
)
3183 if (breakpoint_enabled (bpt
->owner
)
3185 && bpt
->loc_type
== bp_loc_hardware_watchpoint
)
3191 /* Given a bpstat that records zero or more triggered eventpoints, this
3192 function returns another bpstat which contains only the catchpoints
3193 on that first list, if any. */
3195 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3197 struct bpstats root_bs
[1];
3198 bpstat bs
= root_bs
;
3199 struct breakpoint
*ep
;
3202 bpstat_clear (cp_list
);
3203 root_bs
->next
= NULL
;
3205 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3207 /* Is this eventpoint a catchpoint? If not, ignore it. */
3208 ep
= ep_list
->breakpoint_at
->owner
;
3211 if ((ep
->type
!= bp_catch_load
) &&
3212 (ep
->type
!= bp_catch_unload
))
3213 /* pai: (temp) ADD fork/vfork here!! */
3216 /* Yes; add it to the list. */
3217 bs
= bpstat_alloc (ep_list
->breakpoint_at
, bs
);
3222 #if defined(SOLIB_ADD)
3223 /* Also, for each triggered catchpoint, tag it with the name of
3224 the library that caused this trigger. (We copy the name now,
3225 because it's only guaranteed to be available NOW, when the
3226 catchpoint triggers. Clients who may wish to know the name
3227 later must get it from the catchpoint itself.) */
3228 if (ep
->triggered_dll_pathname
!= NULL
)
3229 xfree (ep
->triggered_dll_pathname
);
3230 if (ep
->type
== bp_catch_load
)
3231 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3232 PIDGET (inferior_ptid
));
3234 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3235 PIDGET (inferior_ptid
));
3237 dll_pathname
= NULL
;
3241 ep
->triggered_dll_pathname
= (char *)
3242 xmalloc (strlen (dll_pathname
) + 1);
3243 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3246 ep
->triggered_dll_pathname
= NULL
;
3252 static void print_breakpoint_location (struct breakpoint
*b
,
3253 struct bp_location
*loc
,
3255 struct ui_stream
*stb
)
3260 = find_pc_sect_function (loc
->address
, loc
->section
);
3263 ui_out_text (uiout
, "in ");
3264 ui_out_field_string (uiout
, "func",
3265 SYMBOL_PRINT_NAME (sym
));
3266 ui_out_wrap_hint (uiout
, wrap_indent
);
3267 ui_out_text (uiout
, " at ");
3269 ui_out_field_string (uiout
, "file", b
->source_file
);
3270 ui_out_text (uiout
, ":");
3272 if (ui_out_is_mi_like_p (uiout
))
3274 struct symtab_and_line sal
= find_pc_line (loc
->address
, 0);
3275 char *fullname
= symtab_to_fullname (sal
.symtab
);
3278 ui_out_field_string (uiout
, "fullname", fullname
);
3281 ui_out_field_int (uiout
, "line", b
->line_number
);
3285 ui_out_field_string (uiout
, "pending", b
->addr_string
);
3289 print_address_symbolic (loc
->address
, stb
->stream
, demangle
, "");
3290 ui_out_field_stream (uiout
, "at", stb
);
3294 /* Print B to gdb_stdout. */
3296 print_one_breakpoint_location (struct breakpoint
*b
,
3297 struct bp_location
*loc
,
3299 CORE_ADDR
*last_addr
)
3301 struct command_line
*l
;
3303 struct ep_type_description
3308 static struct ep_type_description bptypes
[] =
3310 {bp_none
, "?deleted?"},
3311 {bp_breakpoint
, "breakpoint"},
3312 {bp_hardware_breakpoint
, "hw breakpoint"},
3313 {bp_until
, "until"},
3314 {bp_finish
, "finish"},
3315 {bp_watchpoint
, "watchpoint"},
3316 {bp_hardware_watchpoint
, "hw watchpoint"},
3317 {bp_read_watchpoint
, "read watchpoint"},
3318 {bp_access_watchpoint
, "acc watchpoint"},
3319 {bp_longjmp
, "longjmp"},
3320 {bp_longjmp_resume
, "longjmp resume"},
3321 {bp_step_resume
, "step resume"},
3322 {bp_watchpoint_scope
, "watchpoint scope"},
3323 {bp_call_dummy
, "call dummy"},
3324 {bp_shlib_event
, "shlib events"},
3325 {bp_thread_event
, "thread events"},
3326 {bp_overlay_event
, "overlay events"},
3327 {bp_catch_load
, "catch load"},
3328 {bp_catch_unload
, "catch unload"},
3329 {bp_catch_fork
, "catch fork"},
3330 {bp_catch_vfork
, "catch vfork"},
3331 {bp_catch_exec
, "catch exec"}
3334 static char *bpdisps
[] =
3335 {"del", "dstp", "dis", "keep"};
3336 static char bpenables
[] = "nynny";
3337 char wrap_indent
[80];
3338 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3339 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3340 struct cleanup
*bkpt_chain
;
3342 int header_of_multiple
= 0;
3343 int part_of_multiple
= (loc
!= NULL
);
3345 gdb_assert (!loc
|| loc_number
!= 0);
3346 /* See comment in print_one_breakpoint concerning
3347 treatment of breakpoints with single disabled
3351 && (b
->loc
->next
!= NULL
|| !b
->loc
->enabled
)))
3352 header_of_multiple
= 1;
3357 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "bkpt");
3361 if (part_of_multiple
)
3364 formatted
= xstrprintf ("%d.%d", b
->number
, loc_number
);
3365 ui_out_field_string (uiout
, "number", formatted
);
3370 ui_out_field_int (uiout
, "number", b
->number
);
3375 if (part_of_multiple
)
3376 ui_out_field_skip (uiout
, "type");
3379 if (((int) b
->type
>= (sizeof (bptypes
) / sizeof (bptypes
[0])))
3380 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3381 internal_error (__FILE__
, __LINE__
,
3382 _("bptypes table does not describe type #%d."),
3384 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3389 if (part_of_multiple
)
3390 ui_out_field_skip (uiout
, "disp");
3392 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3397 if (part_of_multiple
)
3398 ui_out_field_string (uiout
, "enabled",
3400 ? (loc
->enabled
? "y(p)" : "n(p)")
3401 : (loc
->enabled
? "y" : "n"));
3404 int pending
= (b
->loc
== NULL
|| b
->loc
->shlib_disabled
);
3405 /* For header of multiple, there's no point showing pending
3406 state -- it will be apparent from the locations. */
3407 if (header_of_multiple
)
3409 ui_out_field_fmt (uiout
, "enabled", "%c%s",
3410 bpenables
[(int) b
->enable_state
],
3411 pending
? "(p)" : "");
3413 ui_out_spaces (uiout
, 3);
3418 strcpy (wrap_indent
, " ");
3421 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3422 strcat (wrap_indent
, " ");
3424 strcat (wrap_indent
, " ");
3427 if (b
->ops
!= NULL
&& b
->ops
->print_one
!= NULL
)
3429 /* Although the print_one can possibly print
3430 all locations, calling it here is not likely
3431 to get any nice result. So, make sure there's
3432 just one location. */
3433 gdb_assert (b
->loc
== NULL
|| b
->loc
->next
== NULL
);
3434 b
->ops
->print_one (b
, last_addr
);
3440 internal_error (__FILE__
, __LINE__
,
3441 _("print_one_breakpoint: bp_none encountered\n"));
3445 case bp_hardware_watchpoint
:
3446 case bp_read_watchpoint
:
3447 case bp_access_watchpoint
:
3448 /* Field 4, the address, is omitted (which makes the columns
3449 not line up too nicely with the headers, but the effect
3450 is relatively readable). */
3452 ui_out_field_skip (uiout
, "addr");
3454 print_expression (b
->exp
, stb
->stream
);
3455 ui_out_field_stream (uiout
, "what", stb
);
3459 case bp_catch_unload
:
3460 /* Field 4, the address, is omitted (which makes the columns
3461 not line up too nicely with the headers, but the effect
3462 is relatively readable). */
3464 ui_out_field_skip (uiout
, "addr");
3466 if (b
->dll_pathname
== NULL
)
3468 ui_out_field_string (uiout
, "what", "<any library>");
3469 ui_out_spaces (uiout
, 1);
3473 ui_out_text (uiout
, "library \"");
3474 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3475 ui_out_text (uiout
, "\" ");
3480 case bp_catch_vfork
:
3481 /* Field 4, the address, is omitted (which makes the columns
3482 not line up too nicely with the headers, but the effect
3483 is relatively readable). */
3485 ui_out_field_skip (uiout
, "addr");
3487 if (b
->forked_inferior_pid
!= 0)
3489 ui_out_text (uiout
, "process ");
3490 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3491 ui_out_spaces (uiout
, 1);
3496 /* Field 4, the address, is omitted (which makes the columns
3497 not line up too nicely with the headers, but the effect
3498 is relatively readable). */
3500 ui_out_field_skip (uiout
, "addr");
3502 if (b
->exec_pathname
!= NULL
)
3504 ui_out_text (uiout
, "program \"");
3505 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3506 ui_out_text (uiout
, "\" ");
3511 case bp_hardware_breakpoint
:
3515 case bp_longjmp_resume
:
3516 case bp_step_resume
:
3517 case bp_watchpoint_scope
:
3519 case bp_shlib_event
:
3520 case bp_thread_event
:
3521 case bp_overlay_event
:
3526 ui_out_field_string (uiout
, "addr", "<PENDING>");
3527 else if (header_of_multiple
)
3528 ui_out_field_string (uiout
, "addr", "<MULTIPLE>");
3530 ui_out_field_core_addr (uiout
, "addr", loc
->address
);
3533 if (!header_of_multiple
)
3534 print_breakpoint_location (b
, loc
, wrap_indent
, stb
);
3536 *last_addr
= b
->loc
->address
;
3540 if (!part_of_multiple
&& b
->thread
!= -1)
3542 /* FIXME: This seems to be redundant and lost here; see the
3543 "stop only in" line a little further down. */
3544 ui_out_text (uiout
, " thread ");
3545 ui_out_field_int (uiout
, "thread", b
->thread
);
3548 ui_out_text (uiout
, "\n");
3550 if (part_of_multiple
&& frame_id_p (b
->frame_id
))
3553 ui_out_text (uiout
, "\tstop only in stack frame at ");
3554 /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
3556 ui_out_field_core_addr (uiout
, "frame", b
->frame_id
.stack_addr
);
3557 ui_out_text (uiout
, "\n");
3560 if (!part_of_multiple
&& b
->cond_string
&& !ada_exception_catchpoint_p (b
))
3562 /* We do not print the condition for Ada exception catchpoints
3563 because the condition is an internal implementation detail
3564 that we do not want to expose to the user. */
3566 ui_out_text (uiout
, "\tstop only if ");
3567 ui_out_field_string (uiout
, "cond", b
->cond_string
);
3568 ui_out_text (uiout
, "\n");
3571 if (!part_of_multiple
&& b
->thread
!= -1)
3573 /* FIXME should make an annotation for this */
3574 ui_out_text (uiout
, "\tstop only in thread ");
3575 ui_out_field_int (uiout
, "thread", b
->thread
);
3576 ui_out_text (uiout
, "\n");
3579 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
)
3581 /* FIXME should make an annotation for this */
3582 if (ep_is_catchpoint (b
))
3583 ui_out_text (uiout
, "\tcatchpoint");
3585 ui_out_text (uiout
, "\tbreakpoint");
3586 ui_out_text (uiout
, " already hit ");
3587 ui_out_field_int (uiout
, "times", b
->hit_count
);
3588 if (b
->hit_count
== 1)
3589 ui_out_text (uiout
, " time\n");
3591 ui_out_text (uiout
, " times\n");
3594 /* Output the count also if it is zero, but only if this is
3595 mi. FIXME: Should have a better test for this. */
3596 if (ui_out_is_mi_like_p (uiout
))
3597 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3598 ui_out_field_int (uiout
, "times", b
->hit_count
);
3600 if (!part_of_multiple
&& b
->ignore_count
)
3603 ui_out_text (uiout
, "\tignore next ");
3604 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3605 ui_out_text (uiout
, " hits\n");
3608 if (!part_of_multiple
&& (l
= b
->commands
))
3610 struct cleanup
*script_chain
;
3613 script_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "script");
3614 print_command_lines (uiout
, l
, 4);
3615 do_cleanups (script_chain
);
3617 do_cleanups (bkpt_chain
);
3618 do_cleanups (old_chain
);
3622 print_one_breakpoint (struct breakpoint
*b
,
3623 CORE_ADDR
*last_addr
)
3625 print_one_breakpoint_location (b
, NULL
, 0, last_addr
);
3627 /* If this breakpoint has custom print function,
3628 it's already printed. Otherwise, print individual
3629 locations, if any. */
3630 if (b
->ops
== NULL
|| b
->ops
->print_one
== NULL
)
3632 /* If breakpoint has a single location that is
3633 disabled, we print it as if it had
3634 several locations, since otherwise it's hard to
3635 represent "breakpoint enabled, location disabled"
3638 && (b
->loc
->next
|| !b
->loc
->enabled
)
3639 && !ui_out_is_mi_like_p (uiout
))
3641 struct bp_location
*loc
;
3643 for (loc
= b
->loc
; loc
; loc
= loc
->next
, ++n
)
3644 print_one_breakpoint_location (b
, loc
, n
, last_addr
);
3650 struct captured_breakpoint_query_args
3656 do_captured_breakpoint_query (struct ui_out
*uiout
, void *data
)
3658 struct captured_breakpoint_query_args
*args
= data
;
3659 struct breakpoint
*b
;
3660 CORE_ADDR dummy_addr
= 0;
3663 if (args
->bnum
== b
->number
)
3665 print_one_breakpoint (b
, &dummy_addr
);
3673 gdb_breakpoint_query (struct ui_out
*uiout
, int bnum
, char **error_message
)
3675 struct captured_breakpoint_query_args args
;
3677 /* For the moment we don't trust print_one_breakpoint() to not throw
3679 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint_query
, &args
,
3680 error_message
, RETURN_MASK_ALL
) < 0)
3686 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3687 catchpoints, et.al.). */
3690 user_settable_breakpoint (const struct breakpoint
*b
)
3692 return (b
->type
== bp_breakpoint
3693 || b
->type
== bp_catch_load
3694 || b
->type
== bp_catch_unload
3695 || b
->type
== bp_catch_fork
3696 || b
->type
== bp_catch_vfork
3697 || b
->type
== bp_catch_exec
3698 || b
->type
== bp_hardware_breakpoint
3699 || b
->type
== bp_watchpoint
3700 || b
->type
== bp_read_watchpoint
3701 || b
->type
== bp_access_watchpoint
3702 || b
->type
== bp_hardware_watchpoint
);
3705 /* Print information on user settable breakpoint (watchpoint, etc)
3706 number BNUM. If BNUM is -1 print all user settable breakpoints.
3707 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3710 breakpoint_1 (int bnum
, int allflag
)
3712 struct breakpoint
*b
;
3713 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3714 int nr_printable_breakpoints
;
3715 struct cleanup
*bkpttbl_chain
;
3717 /* Compute the number of rows in the table. */
3718 nr_printable_breakpoints
= 0;
3721 || bnum
== b
->number
)
3723 if (allflag
|| user_settable_breakpoint (b
))
3724 nr_printable_breakpoints
++;
3729 = make_cleanup_ui_out_table_begin_end (uiout
, 6, nr_printable_breakpoints
,
3733 = make_cleanup_ui_out_table_begin_end (uiout
, 5, nr_printable_breakpoints
,
3736 if (nr_printable_breakpoints
> 0)
3737 annotate_breakpoints_headers ();
3738 if (nr_printable_breakpoints
> 0)
3740 ui_out_table_header (uiout
, 7, ui_left
, "number", "Num"); /* 1 */
3741 if (nr_printable_breakpoints
> 0)
3743 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3744 if (nr_printable_breakpoints
> 0)
3746 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3747 if (nr_printable_breakpoints
> 0)
3749 ui_out_table_header (uiout
, 4, ui_left
, "enabled", "Enb"); /* 4 */
3752 if (nr_printable_breakpoints
> 0)
3754 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3755 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3757 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3759 if (nr_printable_breakpoints
> 0)
3761 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3762 ui_out_table_body (uiout
);
3763 if (nr_printable_breakpoints
> 0)
3764 annotate_breakpoints_table ();
3768 || bnum
== b
->number
)
3770 /* We only print out user settable breakpoints unless the
3772 if (allflag
|| user_settable_breakpoint (b
))
3773 print_one_breakpoint (b
, &last_addr
);
3776 do_cleanups (bkpttbl_chain
);
3778 if (nr_printable_breakpoints
== 0)
3781 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3783 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3788 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3789 that a comparison of an unsigned with -1 is always false. */
3790 if (last_addr
!= (CORE_ADDR
) -1 && !server_command
)
3791 set_next_address (last_addr
);
3794 /* FIXME? Should this be moved up so that it is only called when
3795 there have been breakpoints? */
3796 annotate_breakpoints_table_end ();
3800 breakpoints_info (char *bnum_exp
, int from_tty
)
3805 bnum
= parse_and_eval_long (bnum_exp
);
3807 breakpoint_1 (bnum
, 0);
3811 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3816 bnum
= parse_and_eval_long (bnum_exp
);
3818 breakpoint_1 (bnum
, 1);
3822 breakpoint_has_pc (struct breakpoint
*b
, CORE_ADDR pc
, asection
*section
)
3824 struct bp_location
*bl
= b
->loc
;
3825 for (; bl
; bl
= bl
->next
)
3827 if (bl
->address
== pc
3828 && (!overlay_debugging
|| bl
->section
== section
))
3834 /* Print a message describing any breakpoints set at PC. */
3837 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
, int thread
)
3840 struct breakpoint
*b
;
3843 others
+= breakpoint_has_pc (b
, pc
, section
);
3847 printf_filtered (_("Note: breakpoint "));
3848 else /* if (others == ???) */
3849 printf_filtered (_("Note: breakpoints "));
3851 if (breakpoint_has_pc (b
, pc
, section
))
3854 printf_filtered ("%d", b
->number
);
3855 if (b
->thread
== -1 && thread
!= -1)
3856 printf_filtered (" (all threads)");
3857 else if (b
->thread
!= -1)
3858 printf_filtered (" (thread %d)", b
->thread
);
3859 printf_filtered ("%s%s ",
3860 ((b
->enable_state
== bp_disabled
||
3861 b
->enable_state
== bp_call_disabled
)
3863 : b
->enable_state
== bp_permanent
3867 : ((others
== 1) ? " and" : ""));
3869 printf_filtered (_("also set at pc "));
3870 deprecated_print_address_numeric (pc
, 1, gdb_stdout
);
3871 printf_filtered (".\n");
3875 /* Set the default place to put a breakpoint
3876 for the `break' command with no arguments. */
3879 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3882 default_breakpoint_valid
= valid
;
3883 default_breakpoint_address
= addr
;
3884 default_breakpoint_symtab
= symtab
;
3885 default_breakpoint_line
= line
;
3888 /* Return true iff it is meaningful to use the address member of
3889 BPT. For some breakpoint types, the address member is irrelevant
3890 and it makes no sense to attempt to compare it to other addresses
3891 (or use it for any other purpose either).
3893 More specifically, each of the following breakpoint types will always
3894 have a zero valued address and we don't want check_duplicates() to mark
3895 breakpoints of any of these types to be a duplicate of an actual
3896 breakpoint at address zero:
3899 bp_hardware_watchpoint
3901 bp_access_watchpoint
3908 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3910 enum bptype type
= bpt
->type
;
3912 return (type
!= bp_watchpoint
3913 && type
!= bp_hardware_watchpoint
3914 && type
!= bp_read_watchpoint
3915 && type
!= bp_access_watchpoint
3916 && type
!= bp_catch_exec
3917 && type
!= bp_longjmp_resume
3918 && type
!= bp_catch_fork
3919 && type
!= bp_catch_vfork
);
3922 /* Rescan breakpoints at the same address and section as BPT,
3923 marking the first one as "first" and any others as "duplicates".
3924 This is so that the bpt instruction is only inserted once.
3925 If we have a permanent breakpoint at the same place as BPT, make
3926 that one the official one, and the rest as duplicates. */
3929 check_duplicates_for (CORE_ADDR address
, asection
*section
)
3931 struct bp_location
*b
;
3933 struct bp_location
*perm_bp
= 0;
3935 ALL_BP_LOCATIONS (b
)
3936 if (b
->owner
->enable_state
!= bp_disabled
3937 && b
->owner
->enable_state
!= bp_call_disabled
3939 && !b
->shlib_disabled
3940 && b
->address
== address
/* address / overlay match */
3941 && (!overlay_debugging
|| b
->section
== section
)
3942 && breakpoint_address_is_meaningful (b
->owner
))
3944 /* Have we found a permanent breakpoint? */
3945 if (b
->owner
->enable_state
== bp_permanent
)
3952 b
->duplicate
= count
> 1;
3955 /* If we found a permanent breakpoint at this address, go over the
3956 list again and declare all the other breakpoints there to be the
3960 perm_bp
->duplicate
= 0;
3962 /* Permanent breakpoint should always be inserted. */
3963 if (! perm_bp
->inserted
)
3964 internal_error (__FILE__
, __LINE__
,
3965 _("allegedly permanent breakpoint is not "
3966 "actually inserted"));
3968 ALL_BP_LOCATIONS (b
)
3971 if (b
->owner
->enable_state
!= bp_disabled
3972 && b
->owner
->enable_state
!= bp_call_disabled
3973 && b
->enabled
&& !b
->shlib_disabled
3974 && b
->address
== address
/* address / overlay match */
3975 && (!overlay_debugging
|| b
->section
== section
)
3976 && breakpoint_address_is_meaningful (b
->owner
))
3979 internal_error (__FILE__
, __LINE__
,
3980 _("another breakpoint was inserted on top of "
3981 "a permanent breakpoint"));
3990 check_duplicates (struct breakpoint
*bpt
)
3992 struct bp_location
*bl
= bpt
->loc
;
3994 if (! breakpoint_address_is_meaningful (bpt
))
3997 for (; bl
; bl
= bl
->next
)
3998 check_duplicates_for (bl
->address
, bl
->section
);
4002 breakpoint_adjustment_warning (CORE_ADDR from_addr
, CORE_ADDR to_addr
,
4003 int bnum
, int have_bnum
)
4008 strcpy (astr1
, hex_string_custom ((unsigned long) from_addr
, 8));
4009 strcpy (astr2
, hex_string_custom ((unsigned long) to_addr
, 8));
4011 warning (_("Breakpoint %d address previously adjusted from %s to %s."),
4012 bnum
, astr1
, astr2
);
4014 warning (_("Breakpoint address adjusted from %s to %s."), astr1
, astr2
);
4017 /* Adjust a breakpoint's address to account for architectural constraints
4018 on breakpoint placement. Return the adjusted address. Note: Very
4019 few targets require this kind of adjustment. For most targets,
4020 this function is simply the identity function. */
4023 adjust_breakpoint_address (CORE_ADDR bpaddr
, enum bptype bptype
)
4025 if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch
))
4027 /* Very few targets need any kind of breakpoint adjustment. */
4030 else if (bptype
== bp_watchpoint
4031 || bptype
== bp_hardware_watchpoint
4032 || bptype
== bp_read_watchpoint
4033 || bptype
== bp_access_watchpoint
4034 || bptype
== bp_catch_fork
4035 || bptype
== bp_catch_vfork
4036 || bptype
== bp_catch_exec
)
4038 /* Watchpoints and the various bp_catch_* eventpoints should not
4039 have their addresses modified. */
4044 CORE_ADDR adjusted_bpaddr
;
4046 /* Some targets have architectural constraints on the placement
4047 of breakpoint instructions. Obtain the adjusted address. */
4048 adjusted_bpaddr
= gdbarch_adjust_breakpoint_address (current_gdbarch
,
4051 /* An adjusted breakpoint address can significantly alter
4052 a user's expectations. Print a warning if an adjustment
4054 if (adjusted_bpaddr
!= bpaddr
)
4055 breakpoint_adjustment_warning (bpaddr
, adjusted_bpaddr
, 0, 0);
4057 return adjusted_bpaddr
;
4061 /* Allocate a struct bp_location. */
4063 static struct bp_location
*
4064 allocate_bp_location (struct breakpoint
*bpt
, enum bptype bp_type
)
4066 struct bp_location
*loc
, *loc_p
;
4068 loc
= xmalloc (sizeof (struct bp_location
));
4069 memset (loc
, 0, sizeof (*loc
));
4073 loc
->shlib_disabled
= 0;
4082 case bp_longjmp_resume
:
4083 case bp_step_resume
:
4084 case bp_watchpoint_scope
:
4086 case bp_shlib_event
:
4087 case bp_thread_event
:
4088 case bp_overlay_event
:
4090 case bp_catch_unload
:
4091 loc
->loc_type
= bp_loc_software_breakpoint
;
4093 case bp_hardware_breakpoint
:
4094 loc
->loc_type
= bp_loc_hardware_breakpoint
;
4096 case bp_hardware_watchpoint
:
4097 case bp_read_watchpoint
:
4098 case bp_access_watchpoint
:
4099 loc
->loc_type
= bp_loc_hardware_watchpoint
;
4103 case bp_catch_vfork
:
4105 loc
->loc_type
= bp_loc_other
;
4108 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
4111 /* Add this breakpoint to the end of the chain. */
4113 loc_p
= bp_location_chain
;
4115 bp_location_chain
= loc
;
4118 while (loc_p
->global_next
)
4119 loc_p
= loc_p
->global_next
;
4120 loc_p
->global_next
= loc
;
4126 static void free_bp_location (struct bp_location
*loc
)
4133 /* Helper to set_raw_breakpoint below. Creates a breakpoint
4134 that has type BPTYPE and has no locations as yet. */
4136 static struct breakpoint
*
4137 set_raw_breakpoint_without_location (enum bptype bptype
)
4139 struct breakpoint
*b
, *b1
;
4141 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
4142 memset (b
, 0, sizeof (*b
));
4145 b
->language
= current_language
->la_language
;
4146 b
->input_radix
= input_radix
;
4148 b
->enable_state
= bp_enabled
;
4151 b
->ignore_count
= 0;
4153 b
->frame_id
= null_frame_id
;
4154 b
->dll_pathname
= NULL
;
4155 b
->triggered_dll_pathname
= NULL
;
4156 b
->forked_inferior_pid
= 0;
4157 b
->exec_pathname
= NULL
;
4159 b
->condition_not_parsed
= 0;
4161 /* Add this breakpoint to the end of the chain
4162 so that a list of breakpoints will come out in order
4163 of increasing numbers. */
4165 b1
= breakpoint_chain
;
4167 breakpoint_chain
= b
;
4177 /* Initialize loc->function_name. */
4179 set_breakpoint_location_function (struct bp_location
*loc
)
4181 if (loc
->owner
->type
== bp_breakpoint
4182 || loc
->owner
->type
== bp_hardware_breakpoint
)
4184 find_pc_partial_function (loc
->address
, &(loc
->function_name
),
4186 if (loc
->function_name
)
4187 loc
->function_name
= xstrdup (loc
->function_name
);
4191 /* set_raw_breakpoint is a low level routine for allocating and
4192 partially initializing a breakpoint of type BPTYPE. The newly
4193 created breakpoint's address, section, source file name, and line
4194 number are provided by SAL. The newly created and partially
4195 initialized breakpoint is added to the breakpoint chain and
4196 is also returned as the value of this function.
4198 It is expected that the caller will complete the initialization of
4199 the newly created breakpoint struct as well as output any status
4200 information regarding the creation of a new breakpoint. In
4201 particular, set_raw_breakpoint does NOT set the breakpoint
4202 number! Care should be taken to not allow an error to occur
4203 prior to completing the initialization of the breakpoint. If this
4204 should happen, a bogus breakpoint will be left on the chain. */
4207 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
4209 struct breakpoint
*b
= set_raw_breakpoint_without_location (bptype
);
4210 CORE_ADDR adjusted_address
;
4212 /* Adjust the breakpoint's address prior to allocating a location.
4213 Once we call allocate_bp_location(), that mostly uninitialized
4214 location will be placed on the location chain. Adjustment of the
4215 breakpoint may cause read_memory_nobpt() to be called and we do
4216 not want its scan of the location chain to find a breakpoint and
4217 location that's only been partially initialized. */
4218 adjusted_address
= adjust_breakpoint_address (sal
.pc
, bptype
);
4220 b
->loc
= allocate_bp_location (b
, bptype
);
4221 b
->loc
->requested_address
= sal
.pc
;
4222 b
->loc
->address
= adjusted_address
;
4224 if (sal
.symtab
== NULL
)
4225 b
->source_file
= NULL
;
4227 b
->source_file
= savestring (sal
.symtab
->filename
,
4228 strlen (sal
.symtab
->filename
));
4229 b
->loc
->section
= sal
.section
;
4230 b
->line_number
= sal
.line
;
4232 set_breakpoint_location_function (b
->loc
);
4234 check_duplicates (b
);
4235 breakpoints_changed ();
4241 /* Note that the breakpoint object B describes a permanent breakpoint
4242 instruction, hard-wired into the inferior's code. */
4244 make_breakpoint_permanent (struct breakpoint
*b
)
4246 struct bp_location
*bl
;
4247 b
->enable_state
= bp_permanent
;
4249 /* By definition, permanent breakpoints are already present in the code.
4250 Mark all locations as inserted. For now, make_breakpoint_permanent
4251 is called in just one place, so it's hard to say if it's reasonable
4252 to have permanent breakpoint with multiple locations or not,
4253 but it's easy to implmement. */
4254 for (bl
= b
->loc
; bl
; bl
= bl
->next
)
4258 static struct breakpoint
*
4259 create_internal_breakpoint (CORE_ADDR address
, enum bptype type
)
4261 static int internal_breakpoint_number
= -1;
4262 struct symtab_and_line sal
;
4263 struct breakpoint
*b
;
4265 init_sal (&sal
); /* initialize to zeroes */
4268 sal
.section
= find_pc_overlay (sal
.pc
);
4270 b
= set_raw_breakpoint (sal
, type
);
4271 b
->number
= internal_breakpoint_number
--;
4272 b
->disposition
= disp_donttouch
;
4279 create_longjmp_breakpoint (char *func_name
)
4281 struct breakpoint
*b
;
4282 struct minimal_symbol
*m
;
4284 if (func_name
== NULL
)
4285 b
= create_internal_breakpoint (0, bp_longjmp_resume
);
4288 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4291 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
), bp_longjmp
);
4294 b
->enable_state
= bp_disabled
;
4297 b
->addr_string
= xstrdup (func_name
);
4300 /* Call this routine when stepping and nexting to enable a breakpoint
4301 if we do a longjmp(). When we hit that breakpoint, call
4302 set_longjmp_resume_breakpoint() to figure out where we are going. */
4305 enable_longjmp_breakpoint (void)
4307 struct breakpoint
*b
;
4310 if (b
->type
== bp_longjmp
)
4312 b
->enable_state
= bp_enabled
;
4313 check_duplicates (b
);
4318 disable_longjmp_breakpoint (void)
4320 struct breakpoint
*b
;
4323 if (b
->type
== bp_longjmp
4324 || b
->type
== bp_longjmp_resume
)
4326 b
->enable_state
= bp_disabled
;
4327 check_duplicates (b
);
4332 create_overlay_event_breakpoint (char *func_name
)
4334 struct breakpoint
*b
;
4335 struct minimal_symbol
*m
;
4337 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4340 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
),
4342 b
->addr_string
= xstrdup (func_name
);
4344 if (overlay_debugging
== ovly_auto
)
4346 b
->enable_state
= bp_enabled
;
4347 overlay_events_enabled
= 1;
4351 b
->enable_state
= bp_disabled
;
4352 overlay_events_enabled
= 0;
4357 enable_overlay_breakpoints (void)
4359 struct breakpoint
*b
;
4362 if (b
->type
== bp_overlay_event
)
4364 b
->enable_state
= bp_enabled
;
4365 check_duplicates (b
);
4366 overlay_events_enabled
= 1;
4371 disable_overlay_breakpoints (void)
4373 struct breakpoint
*b
;
4376 if (b
->type
== bp_overlay_event
)
4378 b
->enable_state
= bp_disabled
;
4379 check_duplicates (b
);
4380 overlay_events_enabled
= 0;
4385 create_thread_event_breakpoint (CORE_ADDR address
)
4387 struct breakpoint
*b
;
4389 b
= create_internal_breakpoint (address
, bp_thread_event
);
4391 b
->enable_state
= bp_enabled
;
4392 /* addr_string has to be used or breakpoint_re_set will delete me. */
4393 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4399 remove_thread_event_breakpoints (void)
4401 struct breakpoint
*b
, *temp
;
4403 ALL_BREAKPOINTS_SAFE (b
, temp
)
4404 if (b
->type
== bp_thread_event
)
4405 delete_breakpoint (b
);
4408 struct captured_parse_breakpoint_args
4411 struct symtabs_and_lines
*sals_p
;
4412 char ***addr_string_p
;
4416 struct lang_and_radix
4424 remove_solib_event_breakpoints (void)
4426 struct breakpoint
*b
, *temp
;
4428 ALL_BREAKPOINTS_SAFE (b
, temp
)
4429 if (b
->type
== bp_shlib_event
)
4430 delete_breakpoint (b
);
4434 create_solib_event_breakpoint (CORE_ADDR address
)
4436 struct breakpoint
*b
;
4438 b
= create_internal_breakpoint (address
, bp_shlib_event
);
4442 /* Disable any breakpoints that are on code in shared libraries. Only
4443 apply to enabled breakpoints, disabled ones can just stay disabled. */
4446 disable_breakpoints_in_shlibs (void)
4448 struct bp_location
*loc
;
4449 int disabled_shlib_breaks
= 0;
4451 ALL_BP_LOCATIONS (loc
)
4453 struct breakpoint
*b
= loc
->owner
;
4454 /* We apply the check to all breakpoints, including disabled
4455 for those with loc->duplicate set. This is so that when breakpoint
4456 becomes enabled, or the duplicate is removed, gdb will try to insert
4457 all breakpoints. If we don't set shlib_disabled here, we'll try
4458 to insert those breakpoints and fail. */
4459 if (((b
->type
== bp_breakpoint
) || (b
->type
== bp_hardware_breakpoint
))
4460 && !loc
->shlib_disabled
4462 && PC_SOLIB (loc
->address
)
4464 && solib_address (loc
->address
)
4468 loc
->shlib_disabled
= 1;
4473 /* Disable any breakpoints that are in in an unloaded shared library. Only
4474 apply to enabled breakpoints, disabled ones can just stay disabled. */
4477 disable_breakpoints_in_unloaded_shlib (struct so_list
*solib
)
4479 struct bp_location
*loc
;
4480 int disabled_shlib_breaks
= 0;
4482 ALL_BP_LOCATIONS (loc
)
4484 struct breakpoint
*b
= loc
->owner
;
4485 if ((loc
->loc_type
== bp_loc_hardware_breakpoint
4486 || loc
->loc_type
== bp_loc_software_breakpoint
)
4487 && !loc
->shlib_disabled
)
4490 char *so_name
= PC_SOLIB (loc
->address
);
4492 char *so_name
= solib_address (loc
->address
);
4494 if (so_name
&& !strcmp (so_name
, solib
->so_name
))
4496 loc
->shlib_disabled
= 1;
4497 /* At this point, we cannot rely on remove_breakpoint
4498 succeeding so we must mark the breakpoint as not inserted
4499 to prevent future errors occurring in remove_breakpoints. */
4501 if (!disabled_shlib_breaks
)
4503 target_terminal_ours_for_output ();
4504 warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""),
4507 disabled_shlib_breaks
= 1;
4514 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4515 enum bptype bp_kind
)
4517 struct symtab_and_line sal
;
4518 struct breakpoint
*b
;
4519 int thread
= -1; /* All threads. */
4526 b
= set_raw_breakpoint (sal
, bp_kind
);
4527 set_breakpoint_count (breakpoint_count
+ 1);
4528 b
->number
= breakpoint_count
;
4529 b
->cond_string
= (cond_string
== NULL
) ?
4530 NULL
: savestring (cond_string
, strlen (cond_string
));
4532 b
->addr_string
= NULL
;
4533 b
->enable_state
= bp_enabled
;
4534 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4535 b
->forked_inferior_pid
= 0;
4541 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4543 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4547 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4549 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4553 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4555 struct symtab_and_line sal
;
4556 struct breakpoint
*b
;
4557 int thread
= -1; /* All threads. */
4564 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4565 set_breakpoint_count (breakpoint_count
+ 1);
4566 b
->number
= breakpoint_count
;
4567 b
->cond_string
= (cond_string
== NULL
) ?
4568 NULL
: savestring (cond_string
, strlen (cond_string
));
4570 b
->addr_string
= NULL
;
4571 b
->enable_state
= bp_enabled
;
4572 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4578 hw_breakpoint_used_count (void)
4580 struct breakpoint
*b
;
4585 if (b
->type
== bp_hardware_breakpoint
&& b
->enable_state
== bp_enabled
)
4593 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4595 struct breakpoint
*b
;
4598 *other_type_used
= 0;
4601 if (breakpoint_enabled (b
))
4603 if (b
->type
== type
)
4605 else if ((b
->type
== bp_hardware_watchpoint
||
4606 b
->type
== bp_read_watchpoint
||
4607 b
->type
== bp_access_watchpoint
))
4608 *other_type_used
= 1;
4614 /* Call this after hitting the longjmp() breakpoint. Use this to set
4615 a new breakpoint at the target of the jmp_buf.
4617 FIXME - This ought to be done by setting a temporary breakpoint
4618 that gets deleted automatically... */
4621 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_id frame_id
)
4623 struct breakpoint
*b
;
4626 if (b
->type
== bp_longjmp_resume
)
4628 b
->loc
->requested_address
= pc
;
4629 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4631 b
->enable_state
= bp_enabled
;
4632 b
->frame_id
= frame_id
;
4633 check_duplicates (b
);
4639 disable_watchpoints_before_interactive_call_start (void)
4641 struct breakpoint
*b
;
4645 if (((b
->type
== bp_watchpoint
)
4646 || (b
->type
== bp_hardware_watchpoint
)
4647 || (b
->type
== bp_read_watchpoint
)
4648 || (b
->type
== bp_access_watchpoint
))
4649 && breakpoint_enabled (b
))
4651 b
->enable_state
= bp_call_disabled
;
4652 check_duplicates (b
);
4658 enable_watchpoints_after_interactive_call_stop (void)
4660 struct breakpoint
*b
;
4664 if (((b
->type
== bp_watchpoint
)
4665 || (b
->type
== bp_hardware_watchpoint
)
4666 || (b
->type
== bp_read_watchpoint
)
4667 || (b
->type
== bp_access_watchpoint
))
4668 && (b
->enable_state
== bp_call_disabled
))
4670 b
->enable_state
= bp_enabled
;
4671 check_duplicates (b
);
4677 /* Set a breakpoint that will evaporate an end of command
4678 at address specified by SAL.
4679 Restrict it to frame FRAME if FRAME is nonzero. */
4682 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_id frame_id
,
4685 struct breakpoint
*b
;
4686 b
= set_raw_breakpoint (sal
, type
);
4687 b
->enable_state
= bp_enabled
;
4688 b
->disposition
= disp_donttouch
;
4689 b
->frame_id
= frame_id
;
4691 /* If we're debugging a multi-threaded program, then we
4692 want momentary breakpoints to be active in only a
4693 single thread of control. */
4694 if (in_thread_list (inferior_ptid
))
4695 b
->thread
= pid_to_thread_id (inferior_ptid
);
4701 /* Tell the user we have just set a breakpoint B. */
4704 mention (struct breakpoint
*b
)
4707 struct cleanup
*old_chain
, *ui_out_chain
;
4708 struct ui_stream
*stb
;
4710 stb
= ui_out_stream_new (uiout
);
4711 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4713 /* FIXME: This is misplaced; mention() is called by things (like
4714 hitting a watchpoint) other than breakpoint creation. It should
4715 be possible to clean this up and at the same time replace the
4716 random calls to breakpoint_changed with this hook, as has already
4717 been done for deprecated_delete_breakpoint_hook and so on. */
4718 if (deprecated_create_breakpoint_hook
)
4719 deprecated_create_breakpoint_hook (b
);
4720 breakpoint_create_event (b
->number
);
4722 if (b
->ops
!= NULL
&& b
->ops
->print_mention
!= NULL
)
4723 b
->ops
->print_mention (b
);
4728 printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b
->number
);
4731 ui_out_text (uiout
, "Watchpoint ");
4732 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4733 ui_out_field_int (uiout
, "number", b
->number
);
4734 ui_out_text (uiout
, ": ");
4735 print_expression (b
->exp
, stb
->stream
);
4736 ui_out_field_stream (uiout
, "exp", stb
);
4737 do_cleanups (ui_out_chain
);
4739 case bp_hardware_watchpoint
:
4740 ui_out_text (uiout
, "Hardware watchpoint ");
4741 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4742 ui_out_field_int (uiout
, "number", b
->number
);
4743 ui_out_text (uiout
, ": ");
4744 print_expression (b
->exp
, stb
->stream
);
4745 ui_out_field_stream (uiout
, "exp", stb
);
4746 do_cleanups (ui_out_chain
);
4748 case bp_read_watchpoint
:
4749 ui_out_text (uiout
, "Hardware read watchpoint ");
4750 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-rwpt");
4751 ui_out_field_int (uiout
, "number", b
->number
);
4752 ui_out_text (uiout
, ": ");
4753 print_expression (b
->exp
, stb
->stream
);
4754 ui_out_field_stream (uiout
, "exp", stb
);
4755 do_cleanups (ui_out_chain
);
4757 case bp_access_watchpoint
:
4758 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4759 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-awpt");
4760 ui_out_field_int (uiout
, "number", b
->number
);
4761 ui_out_text (uiout
, ": ");
4762 print_expression (b
->exp
, stb
->stream
);
4763 ui_out_field_stream (uiout
, "exp", stb
);
4764 do_cleanups (ui_out_chain
);
4767 if (ui_out_is_mi_like_p (uiout
))
4772 printf_filtered (_("Breakpoint %d"), b
->number
);
4775 case bp_hardware_breakpoint
:
4776 if (ui_out_is_mi_like_p (uiout
))
4781 printf_filtered (_("Hardware assisted breakpoint %d"), b
->number
);
4785 case bp_catch_unload
:
4786 printf_filtered (_("Catchpoint %d (%s %s)"),
4788 (b
->type
== bp_catch_load
) ? "load" : "unload",
4789 (b
->dll_pathname
!= NULL
) ?
4790 b
->dll_pathname
: "<any library>");
4793 case bp_catch_vfork
:
4794 printf_filtered (_("Catchpoint %d (%s)"),
4796 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4799 printf_filtered (_("Catchpoint %d (exec)"),
4806 case bp_longjmp_resume
:
4807 case bp_step_resume
:
4809 case bp_watchpoint_scope
:
4810 case bp_shlib_event
:
4811 case bp_thread_event
:
4812 case bp_overlay_event
:
4818 /* i18n: cagney/2005-02-11: Below needs to be merged into a
4822 printf_filtered (_(" (%s) pending."), b
->addr_string
);
4826 if (addressprint
|| b
->source_file
== NULL
)
4828 printf_filtered (" at ");
4829 deprecated_print_address_numeric (b
->loc
->address
, 1, gdb_stdout
);
4832 printf_filtered (": file %s, line %d.",
4833 b
->source_file
, b
->line_number
);
4837 struct bp_location
*loc
= b
->loc
;
4839 for (; loc
; loc
= loc
->next
)
4841 printf_filtered (" (%d locations)", n
);
4846 do_cleanups (old_chain
);
4847 if (ui_out_is_mi_like_p (uiout
))
4849 printf_filtered ("\n");
4853 static struct bp_location
*
4854 add_location_to_breakpoint (struct breakpoint
*b
, enum bptype bptype
,
4855 const struct symtab_and_line
*sal
)
4857 struct bp_location
*loc
, **tmp
;
4859 loc
= allocate_bp_location (b
, bptype
);
4860 for (tmp
= &(b
->loc
); *tmp
!= NULL
; tmp
= &((*tmp
)->next
))
4863 loc
->requested_address
= sal
->pc
;
4864 loc
->address
= adjust_breakpoint_address (loc
->requested_address
,
4866 loc
->section
= sal
->section
;
4868 set_breakpoint_location_function (loc
);
4872 /* Create a breakpoint with SAL as location. Use ADDR_STRING
4873 as textual description of the location, and COND_STRING
4874 as condition expression. */
4877 create_breakpoint (struct symtabs_and_lines sals
, char *addr_string
,
4879 enum bptype type
, enum bpdisp disposition
,
4880 int thread
, int ignore_count
, int from_tty
)
4882 struct breakpoint
*b
= NULL
;
4885 if (type
== bp_hardware_breakpoint
)
4887 int i
= hw_breakpoint_used_count ();
4888 int target_resources_ok
=
4889 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4891 if (target_resources_ok
== 0)
4892 error (_("No hardware breakpoint support in the target."));
4893 else if (target_resources_ok
< 0)
4894 error (_("Hardware breakpoints used exceeds limit."));
4897 for (i
= 0; i
< sals
.nelts
; ++i
)
4899 struct symtab_and_line sal
= sals
.sals
[i
];
4900 struct bp_location
*loc
;
4903 describe_other_breakpoints (sal
.pc
, sal
.section
, thread
);
4907 b
= set_raw_breakpoint (sal
, type
);
4908 set_breakpoint_count (breakpoint_count
+ 1);
4909 b
->number
= breakpoint_count
;
4912 b
->cond_string
= cond_string
;
4913 b
->ignore_count
= ignore_count
;
4914 b
->enable_state
= bp_enabled
;
4915 b
->disposition
= disposition
;
4921 loc
= add_location_to_breakpoint (b
, type
, &sal
);
4926 char *arg
= b
->cond_string
;
4927 loc
->cond
= parse_exp_1 (&arg
, block_for_pc (loc
->address
), 0);
4929 error (_("Garbage %s follows condition"), arg
);
4934 b
->addr_string
= addr_string
;
4936 /* addr_string has to be used or breakpoint_re_set will delete
4938 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4943 /* Remove element at INDEX_TO_REMOVE from SAL, shifting other
4944 elements to fill the void space. */
4945 static void remove_sal (struct symtabs_and_lines
*sal
, int index_to_remove
)
4947 int i
= index_to_remove
+1;
4948 int last_index
= sal
->nelts
-1;
4950 for (;i
<= last_index
; ++i
)
4951 sal
->sals
[i
-1] = sal
->sals
[i
];
4956 /* If appropriate, obtains all sals that correspond
4957 to the same file and line as SAL. This is done
4958 only if SAL does not have explicit PC and has
4959 line and file information. If we got just a single
4960 expanded sal, return the original.
4962 Otherwise, if SAL.explicit_line is not set, filter out
4963 all sals for which the name of enclosing function
4964 is different from SAL. This makes sure that if we have
4965 breakpoint originally set in template instantiation, say
4966 foo<int>(), we won't expand SAL to locations at the same
4967 line in all existing instantiations of 'foo'.
4970 struct symtabs_and_lines
4971 expand_line_sal_maybe (struct symtab_and_line sal
)
4973 struct symtabs_and_lines expanded
;
4974 CORE_ADDR original_pc
= sal
.pc
;
4975 char *original_function
= NULL
;
4979 /* If we have explicit pc, don't expand.
4980 If we have no line number, we can't expand. */
4981 if (sal
.explicit_pc
|| sal
.line
== 0 || sal
.symtab
== NULL
)
4984 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4985 expanded
.sals
[0] = sal
;
4990 find_pc_partial_function (original_pc
, &original_function
, NULL
, NULL
);
4992 expanded
= expand_line_sal (sal
);
4993 if (expanded
.nelts
== 1)
4995 /* We had one sal, we got one sal. Without futher
4996 processing, just return the original sal. */
4997 xfree (expanded
.sals
);
4999 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
5000 sal
.pc
= original_pc
;
5001 expanded
.sals
[0] = sal
;
5005 if (!sal
.explicit_line
)
5007 CORE_ADDR func_addr
, func_end
;
5008 for (i
= 0; i
< expanded
.nelts
; ++i
)
5010 CORE_ADDR pc
= expanded
.sals
[i
].pc
;
5011 char *this_function
;
5012 if (find_pc_partial_function (pc
, &this_function
,
5013 &func_addr
, &func_end
))
5015 if (this_function
&&
5016 strcmp (this_function
, original_function
) != 0)
5018 remove_sal (&expanded
, i
);
5021 else if (func_addr
== pc
)
5023 /* We're at beginning of a function, and should
5025 struct symbol
*sym
= find_pc_function (pc
);
5027 expanded
.sals
[i
] = find_function_start_sal (sym
, 1);
5030 = gdbarch_skip_prologue (current_gdbarch
, pc
);
5037 if (expanded
.nelts
<= 1)
5039 /* This is un ugly workaround. If we get zero
5040 expanded sals then something is really wrong.
5041 Fix that by returnign the original sal. */
5042 xfree (expanded
.sals
);
5044 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
5045 sal
.pc
= original_pc
;
5046 expanded
.sals
[0] = sal
;
5053 for (i
= 0; i
< expanded
.nelts
; ++i
)
5054 if (expanded
.sals
[i
].pc
== original_pc
)
5065 /* Add SALS.nelts breakpoints to the breakpoint table. For each
5066 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i]
5067 value. COND_STRING, if not NULL, specified the condition to be
5068 used for all breakpoints. Essentially the only case where
5069 SALS.nelts is not 1 is when we set a breakpoint on an overloaded
5070 function. In that case, it's still not possible to specify
5071 separate conditions for different overloaded functions, so
5072 we take just a single condition string.
5074 NOTE: If the function succeeds, the caller is expected to cleanup
5075 the arrays ADDR_STRING, COND_STRING, and SALS (but not the
5076 array contents). If the function fails (error() is called), the
5077 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
5078 COND and SALS arrays and each of those arrays contents. */
5081 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
5083 enum bptype type
, enum bpdisp disposition
,
5084 int thread
, int ignore_count
, int from_tty
)
5087 for (i
= 0; i
< sals
.nelts
; ++i
)
5089 struct symtabs_and_lines expanded
=
5090 expand_line_sal_maybe (sals
.sals
[i
]);
5092 create_breakpoint (expanded
, addr_string
[i
],
5093 cond_string
, type
, disposition
,
5094 thread
, ignore_count
, from_tty
);
5098 /* Parse ARG which is assumed to be a SAL specification possibly
5099 followed by conditionals. On return, SALS contains an array of SAL
5100 addresses found. ADDR_STRING contains a vector of (canonical)
5101 address strings. ARG points to the end of the SAL. */
5104 parse_breakpoint_sals (char **address
,
5105 struct symtabs_and_lines
*sals
,
5106 char ***addr_string
,
5109 char *addr_start
= *address
;
5110 *addr_string
= NULL
;
5111 /* If no arg given, or if first arg is 'if ', use the default
5113 if ((*address
) == NULL
5114 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
5116 if (default_breakpoint_valid
)
5118 struct symtab_and_line sal
;
5119 init_sal (&sal
); /* initialize to zeroes */
5120 sals
->sals
= (struct symtab_and_line
*)
5121 xmalloc (sizeof (struct symtab_and_line
));
5122 sal
.pc
= default_breakpoint_address
;
5123 sal
.line
= default_breakpoint_line
;
5124 sal
.symtab
= default_breakpoint_symtab
;
5125 sal
.section
= find_pc_overlay (sal
.pc
);
5126 sals
->sals
[0] = sal
;
5130 error (_("No default breakpoint address now."));
5134 /* Force almost all breakpoints to be in terms of the
5135 current_source_symtab (which is decode_line_1's default). This
5136 should produce the results we want almost all of the time while
5137 leaving default_breakpoint_* alone.
5138 ObjC: However, don't match an Objective-C method name which
5139 may have a '+' or '-' succeeded by a '[' */
5141 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
5143 if (default_breakpoint_valid
5145 || ((strchr ("+-", (*address
)[0]) != NULL
)
5146 && ((*address
)[1] != '['))))
5147 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
5148 default_breakpoint_line
, addr_string
,
5151 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0,
5152 addr_string
, not_found_ptr
);
5154 /* For any SAL that didn't have a canonical string, fill one in. */
5155 if (sals
->nelts
> 0 && *addr_string
== NULL
)
5156 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
5157 if (addr_start
!= (*address
))
5160 for (i
= 0; i
< sals
->nelts
; i
++)
5162 /* Add the string if not present. */
5163 if ((*addr_string
)[i
] == NULL
)
5164 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
5170 /* Convert each SAL into a real PC. Verify that the PC can be
5171 inserted as a breakpoint. If it can't throw an error. */
5174 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
5178 for (i
= 0; i
< sals
->nelts
; i
++)
5179 resolve_sal_pc (&sals
->sals
[i
]);
5183 do_captured_parse_breakpoint (struct ui_out
*ui
, void *data
)
5185 struct captured_parse_breakpoint_args
*args
= data
;
5187 parse_breakpoint_sals (args
->arg_p
, args
->sals_p
, args
->addr_string_p
,
5188 args
->not_found_ptr
);
5191 /* Given TOK, a string specification of condition and thread, as
5192 accepted by the 'break' command, extract the condition
5193 string and thread number and set *COND_STRING and *THREAD.
5194 PC identifies the context at which the condition should be parsed.
5195 If no condition is found, *COND_STRING is set to NULL.
5196 If no thread is found, *THREAD is set to -1. */
5198 find_condition_and_thread (char *tok
, CORE_ADDR pc
,
5199 char **cond_string
, int *thread
)
5201 *cond_string
= NULL
;
5207 char *cond_start
= NULL
;
5208 char *cond_end
= NULL
;
5209 while (*tok
== ' ' || *tok
== '\t')
5214 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5217 toklen
= end_tok
- tok
;
5219 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5221 tok
= cond_start
= end_tok
+ 1;
5222 parse_exp_1 (&tok
, block_for_pc (pc
), 0);
5224 *cond_string
= savestring (cond_start
,
5225 cond_end
- cond_start
);
5227 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
5233 *thread
= strtol (tok
, &tok
, 0);
5235 error (_("Junk after thread keyword."));
5236 if (!valid_thread_id (*thread
))
5237 error (_("Unknown thread %d."), *thread
);
5240 error (_("Junk at end of arguments."));
5244 /* Set a breakpoint. This function is shared between
5245 CLI and MI functions for setting a breakpoint.
5246 This function has two major modes of operations,
5247 selected by the PARSE_CONDITION_AND_THREAD parameter.
5248 If non-zero, the function will parse arg, extracting
5249 breakpoint location, address and thread. Otherwise,
5250 ARG is just the location of breakpoint, with condition
5251 and thread specified by the COND_STRING and THREAD
5255 break_command_really (char *arg
, char *cond_string
, int thread
,
5256 int parse_condition_and_thread
,
5257 int tempflag
, int hardwareflag
,
5258 enum auto_boolean pending_break_support
,
5261 struct gdb_exception e
;
5262 struct symtabs_and_lines sals
;
5263 struct symtab_and_line pending_sal
;
5266 char *addr_start
= arg
;
5268 struct cleanup
*old_chain
;
5269 struct cleanup
*breakpoint_chain
= NULL
;
5270 struct captured_parse_breakpoint_args parse_args
;
5273 int ignore_count
= 0;
5280 parse_args
.arg_p
= &arg
;
5281 parse_args
.sals_p
= &sals
;
5282 parse_args
.addr_string_p
= &addr_string
;
5283 parse_args
.not_found_ptr
= ¬_found
;
5285 e
= catch_exception (uiout
, do_captured_parse_breakpoint
,
5286 &parse_args
, RETURN_MASK_ALL
);
5288 /* If caller is interested in rc value from parse, set value. */
5292 exception_print (gdb_stderr
, e
);
5297 case NOT_FOUND_ERROR
:
5299 exception_print (gdb_stderr
, e
);
5301 /* If pending breakpoint support is turned off, throw
5304 if (pending_break_support
== AUTO_BOOLEAN_FALSE
)
5305 deprecated_throw_reason (RETURN_ERROR
);
5307 /* If pending breakpoint support is auto query and the user
5308 selects no, then simply return the error code. */
5309 if (pending_break_support
== AUTO_BOOLEAN_AUTO
&&
5310 !nquery ("Make breakpoint pending on future shared library load? "))
5313 /* At this point, either the user was queried about setting
5314 a pending breakpoint and selected yes, or pending
5315 breakpoint behavior is on and thus a pending breakpoint
5316 is defaulted on behalf of the user. */
5317 copy_arg
= xstrdup (addr_start
);
5318 addr_string
= ©_arg
;
5320 sals
.sals
= &pending_sal
;
5325 exception_print (gdb_stderr
, e
);
5333 /* Create a chain of things that always need to be cleaned up. */
5334 old_chain
= make_cleanup (null_cleanup
, 0);
5338 /* Make sure that all storage allocated to SALS gets freed. */
5339 make_cleanup (xfree
, sals
.sals
);
5341 /* Cleanup the addr_string array but not its contents. */
5342 make_cleanup (xfree
, addr_string
);
5345 /* ----------------------------- SNIP -----------------------------
5346 Anything added to the cleanup chain beyond this point is assumed
5347 to be part of a breakpoint. If the breakpoint create succeeds
5348 then the memory is not reclaimed. */
5349 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5351 /* Mark the contents of the addr_string for cleanup. These go on
5352 the breakpoint_chain and only occure if the breakpoint create
5354 for (i
= 0; i
< sals
.nelts
; i
++)
5356 if (addr_string
[i
] != NULL
)
5357 make_cleanup (xfree
, addr_string
[i
]);
5360 /* Resolve all line numbers to PC's and verify that the addresses
5361 are ok for the target. */
5363 breakpoint_sals_to_pc (&sals
, addr_start
);
5365 /* Verify that condition can be parsed, before setting any
5366 breakpoints. Allocate a separate condition expression for each
5370 if (parse_condition_and_thread
)
5372 /* Here we only parse 'arg' to separate condition
5373 from thread number, so parsing in context of first
5374 sal is OK. When setting the breakpoint we'll
5375 re-parse it in context of each sal. */
5378 find_condition_and_thread (arg
, sals
.sals
[0].pc
, &cond_string
, &thread
);
5380 make_cleanup (xfree
, cond_string
);
5384 /* Create a private copy of condition string. */
5387 cond_string
= xstrdup (cond_string
);
5388 make_cleanup (xfree
, cond_string
);
5391 create_breakpoints (sals
, addr_string
, cond_string
,
5392 hardwareflag
? bp_hardware_breakpoint
5394 tempflag
? disp_del
: disp_donttouch
,
5395 thread
, ignore_count
, from_tty
);
5399 struct symtab_and_line sal
= {0};
5400 struct breakpoint
*b
;
5402 make_cleanup (xfree
, copy_arg
);
5404 b
= set_raw_breakpoint_without_location (hardwareflag
5405 ? bp_hardware_breakpoint
5407 set_breakpoint_count (breakpoint_count
+ 1);
5408 b
->number
= breakpoint_count
;
5410 b
->addr_string
= addr_string
[0];
5411 b
->cond_string
= NULL
;
5412 b
->ignore_count
= ignore_count
;
5413 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
5414 b
->condition_not_parsed
= 1;
5419 warning (_("Multiple breakpoints were set.\n"
5420 "Use the \"delete\" command to delete unwanted breakpoints."));
5421 /* That's it. Discard the cleanups for data inserted into the
5423 discard_cleanups (breakpoint_chain
);
5424 /* But cleanup everything else. */
5425 do_cleanups (old_chain
);
5430 /* Set a breakpoint.
5431 ARG is a string describing breakpoint address,
5432 condition, and thread.
5433 FLAG specifies if a breakpoint is hardware on,
5434 and if breakpoint is temporary, using BP_HARDWARE_FLAG
5438 break_command_1 (char *arg
, int flag
, int from_tty
)
5440 int hardwareflag
= flag
& BP_HARDWAREFLAG
;
5441 int tempflag
= flag
& BP_TEMPFLAG
;
5443 return break_command_really (arg
,
5444 NULL
, 0, 1 /* parse arg */,
5445 tempflag
, hardwareflag
,
5446 pending_break_support
, from_tty
);
5451 gdb_breakpoint (char *address
, char *condition
,
5452 int hardwareflag
, int tempflag
,
5453 int thread
, int ignore_count
,
5454 char **error_message
)
5456 return break_command_really (address
, condition
, thread
,
5457 0 /* condition and thread are valid. */,
5458 tempflag
, hardwareflag
,
5459 AUTO_BOOLEAN_FALSE
/* no pending. */,
5464 /* Helper function for break_command_1 and disassemble_command. */
5467 resolve_sal_pc (struct symtab_and_line
*sal
)
5471 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5473 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5474 error (_("No line %d in file \"%s\"."),
5475 sal
->line
, sal
->symtab
->filename
);
5479 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5481 struct blockvector
*bv
;
5485 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &b
, sal
->symtab
);
5488 sym
= block_function (b
);
5491 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5492 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5496 /* It really is worthwhile to have the section, so we'll just
5497 have to look harder. This case can be executed if we have
5498 line numbers but no functions (as can happen in assembly
5501 struct minimal_symbol
*msym
;
5503 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5505 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5512 break_command (char *arg
, int from_tty
)
5514 break_command_1 (arg
, 0, from_tty
);
5518 tbreak_command (char *arg
, int from_tty
)
5520 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5524 hbreak_command (char *arg
, int from_tty
)
5526 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5530 thbreak_command (char *arg
, int from_tty
)
5532 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5536 stop_command (char *arg
, int from_tty
)
5538 printf_filtered (_("Specify the type of breakpoint to set.\n\
5539 Usage: stop in <function | address>\n\
5540 stop at <line>\n"));
5544 stopin_command (char *arg
, int from_tty
)
5548 if (arg
== (char *) NULL
)
5550 else if (*arg
!= '*')
5555 /* look for a ':'. If this is a line number specification, then
5556 say it is bad, otherwise, it should be an address or
5557 function/method name */
5558 while (*argptr
&& !hasColon
)
5560 hasColon
= (*argptr
== ':');
5565 badInput
= (*argptr
!= ':'); /* Not a class::method */
5567 badInput
= isdigit (*arg
); /* a simple line number */
5571 printf_filtered (_("Usage: stop in <function | address>\n"));
5573 break_command_1 (arg
, 0, from_tty
);
5577 stopat_command (char *arg
, int from_tty
)
5581 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5588 /* look for a ':'. If there is a '::' then get out, otherwise
5589 it is probably a line number. */
5590 while (*argptr
&& !hasColon
)
5592 hasColon
= (*argptr
== ':');
5597 badInput
= (*argptr
== ':'); /* we have class::method */
5599 badInput
= !isdigit (*arg
); /* not a line number */
5603 printf_filtered (_("Usage: stop at <line>\n"));
5605 break_command_1 (arg
, 0, from_tty
);
5608 /* accessflag: hw_write: watch write,
5609 hw_read: watch read,
5610 hw_access: watch access (read or write) */
5612 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5614 struct breakpoint
*b
, *scope_breakpoint
= NULL
;
5615 struct symtab_and_line sal
;
5616 struct expression
*exp
;
5617 struct block
*exp_valid_block
;
5618 struct value
*val
, *mark
;
5619 struct frame_info
*frame
;
5620 struct frame_info
*prev_frame
= NULL
;
5621 char *exp_start
= NULL
;
5622 char *exp_end
= NULL
;
5623 char *tok
, *end_tok
;
5625 char *cond_start
= NULL
;
5626 char *cond_end
= NULL
;
5627 struct expression
*cond
= NULL
;
5628 int i
, other_type_used
, target_resources_ok
= 0;
5629 enum bptype bp_type
;
5632 init_sal (&sal
); /* initialize to zeroes */
5634 /* Parse arguments. */
5635 innermost_block
= NULL
;
5637 exp
= parse_exp_1 (&arg
, 0, 0);
5639 exp_valid_block
= innermost_block
;
5640 mark
= value_mark ();
5641 val
= evaluate_expression (exp
);
5642 release_value (val
);
5643 if (value_lazy (val
))
5644 value_fetch_lazy (val
);
5647 while (*tok
== ' ' || *tok
== '\t')
5651 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5654 toklen
= end_tok
- tok
;
5655 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5657 tok
= cond_start
= end_tok
+ 1;
5658 cond
= parse_exp_1 (&tok
, 0, 0);
5662 error (_("Junk at end of command."));
5664 if (accessflag
== hw_read
)
5665 bp_type
= bp_read_watchpoint
;
5666 else if (accessflag
== hw_access
)
5667 bp_type
= bp_access_watchpoint
;
5669 bp_type
= bp_hardware_watchpoint
;
5671 mem_cnt
= can_use_hardware_watchpoint (val
);
5672 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5673 error (_("Expression cannot be implemented with read/access watchpoint."));
5676 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5677 target_resources_ok
=
5678 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5680 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5681 error (_("Target does not support this type of hardware watchpoint."));
5683 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5684 error (_("Target can only support one kind of HW watchpoint at a time."));
5687 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5688 watchpoint could not be set. */
5689 if (!mem_cnt
|| target_resources_ok
<= 0)
5690 bp_type
= bp_watchpoint
;
5692 frame
= block_innermost_frame (exp_valid_block
);
5694 prev_frame
= get_prev_frame (frame
);
5698 /* If the expression is "local", then set up a "watchpoint scope"
5699 breakpoint at the point where we've left the scope of the watchpoint
5700 expression. Create the scope breakpoint before the watchpoint, so
5701 that we will encounter it first in bpstat_stop_status. */
5702 if (innermost_block
&& prev_frame
)
5704 scope_breakpoint
= create_internal_breakpoint (get_frame_pc (prev_frame
),
5705 bp_watchpoint_scope
);
5707 scope_breakpoint
->enable_state
= bp_enabled
;
5709 /* Automatically delete the breakpoint when it hits. */
5710 scope_breakpoint
->disposition
= disp_del
;
5712 /* Only break in the proper frame (help with recursion). */
5713 scope_breakpoint
->frame_id
= get_frame_id (prev_frame
);
5715 /* Set the address at which we will stop. */
5716 scope_breakpoint
->loc
->requested_address
5717 = get_frame_pc (prev_frame
);
5718 scope_breakpoint
->loc
->address
5719 = adjust_breakpoint_address (scope_breakpoint
->loc
->requested_address
,
5720 scope_breakpoint
->type
);
5723 /* Now set up the breakpoint. */
5724 b
= set_raw_breakpoint (sal
, bp_type
);
5725 set_breakpoint_count (breakpoint_count
+ 1);
5726 b
->number
= breakpoint_count
;
5727 b
->disposition
= disp_donttouch
;
5729 b
->exp_valid_block
= exp_valid_block
;
5730 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5732 b
->loc
->cond
= cond
;
5734 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5739 b
->watchpoint_frame
= get_frame_id (frame
);
5741 b
->watchpoint_frame
= null_frame_id
;
5743 if (scope_breakpoint
!= NULL
)
5745 /* The scope breakpoint is related to the watchpoint. We will
5746 need to act on them together. */
5747 b
->related_breakpoint
= scope_breakpoint
;
5748 scope_breakpoint
->related_breakpoint
= b
;
5751 value_free_to_mark (mark
);
5755 /* Return count of locations need to be watched and can be handled
5756 in hardware. If the watchpoint can not be handled
5757 in hardware return zero. */
5760 can_use_hardware_watchpoint (struct value
*v
)
5762 int found_memory_cnt
= 0;
5763 struct value
*head
= v
;
5765 /* Did the user specifically forbid us to use hardware watchpoints? */
5766 if (!can_use_hw_watchpoints
)
5769 /* Make sure that the value of the expression depends only upon
5770 memory contents, and values computed from them within GDB. If we
5771 find any register references or function calls, we can't use a
5772 hardware watchpoint.
5774 The idea here is that evaluating an expression generates a series
5775 of values, one holding the value of every subexpression. (The
5776 expression a*b+c has five subexpressions: a, b, a*b, c, and
5777 a*b+c.) GDB's values hold almost enough information to establish
5778 the criteria given above --- they identify memory lvalues,
5779 register lvalues, computed values, etcetera. So we can evaluate
5780 the expression, and then scan the chain of values that leaves
5781 behind to decide whether we can detect any possible change to the
5782 expression's final value using only hardware watchpoints.
5784 However, I don't think that the values returned by inferior
5785 function calls are special in any way. So this function may not
5786 notice that an expression involving an inferior function call
5787 can't be watched with hardware watchpoints. FIXME. */
5788 for (; v
; v
= value_next (v
))
5790 if (VALUE_LVAL (v
) == lval_memory
)
5793 /* A lazy memory lvalue is one that GDB never needed to fetch;
5794 we either just used its address (e.g., `a' in `a.b') or
5795 we never needed it at all (e.g., `a' in `a,b'). */
5799 /* Ahh, memory we actually used! Check if we can cover
5800 it with hardware watchpoints. */
5801 struct type
*vtype
= check_typedef (value_type (v
));
5803 /* We only watch structs and arrays if user asked for it
5804 explicitly, never if they just happen to appear in a
5805 middle of some value chain. */
5807 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5808 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5810 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
5811 int len
= TYPE_LENGTH (value_type (v
));
5813 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5820 else if (VALUE_LVAL (v
) != not_lval
5821 && deprecated_value_modifiable (v
) == 0)
5822 return 0; /* ??? What does this represent? */
5823 else if (VALUE_LVAL (v
) == lval_register
)
5824 return 0; /* cannot watch a register with a HW watchpoint */
5827 /* The expression itself looks suitable for using a hardware
5828 watchpoint, but give the target machine a chance to reject it. */
5829 return found_memory_cnt
;
5833 watch_command_wrapper (char *arg
, int from_tty
)
5835 watch_command (arg
, from_tty
);
5839 watch_command (char *arg
, int from_tty
)
5841 watch_command_1 (arg
, hw_write
, from_tty
);
5845 rwatch_command_wrapper (char *arg
, int from_tty
)
5847 rwatch_command (arg
, from_tty
);
5851 rwatch_command (char *arg
, int from_tty
)
5853 watch_command_1 (arg
, hw_read
, from_tty
);
5857 awatch_command_wrapper (char *arg
, int from_tty
)
5859 awatch_command (arg
, from_tty
);
5863 awatch_command (char *arg
, int from_tty
)
5865 watch_command_1 (arg
, hw_access
, from_tty
);
5869 /* Helper routines for the until_command routine in infcmd.c. Here
5870 because it uses the mechanisms of breakpoints. */
5872 /* This function is called by fetch_inferior_event via the
5873 cmd_continuation pointer, to complete the until command. It takes
5874 care of cleaning up the temporary breakpoints set up by the until
5877 until_break_command_continuation (struct continuation_arg
*arg
)
5879 struct cleanup
*cleanups
;
5881 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5882 do_exec_cleanups (cleanups
);
5886 until_break_command (char *arg
, int from_tty
, int anywhere
)
5888 struct symtabs_and_lines sals
;
5889 struct symtab_and_line sal
;
5890 struct frame_info
*frame
= get_selected_frame (NULL
);
5891 struct frame_info
*prev_frame
= get_prev_frame (frame
);
5892 struct breakpoint
*breakpoint
;
5893 struct cleanup
*old_chain
;
5894 struct continuation_arg
*arg1
;
5897 clear_proceed_status ();
5899 /* Set a breakpoint where the user wants it and at return from
5902 if (default_breakpoint_valid
)
5903 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5904 default_breakpoint_line
, (char ***) NULL
, NULL
);
5906 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5907 0, (char ***) NULL
, NULL
);
5909 if (sals
.nelts
!= 1)
5910 error (_("Couldn't get information on specified line."));
5913 xfree (sals
.sals
); /* malloc'd, so freed */
5916 error (_("Junk at end of arguments."));
5918 resolve_sal_pc (&sal
);
5921 /* If the user told us to continue until a specified location,
5922 we don't specify a frame at which we need to stop. */
5923 breakpoint
= set_momentary_breakpoint (sal
, null_frame_id
, bp_until
);
5925 /* Otherwise, specify the current frame, because we want to stop only
5926 at the very same frame. */
5927 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
),
5930 if (!target_can_async_p ())
5931 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5933 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5935 /* If we are running asynchronously, and the target supports async
5936 execution, we are not waiting for the target to stop, in the call
5937 tp proceed, below. This means that we cannot delete the
5938 brekpoints until the target has actually stopped. The only place
5939 where we get a chance to do that is in fetch_inferior_event, so
5940 we must set things up for that. */
5942 if (target_can_async_p ())
5944 /* In this case the arg for the continuation is just the point
5945 in the exec_cleanups chain from where to start doing
5946 cleanups, because all the continuation does is the cleanups in
5947 the exec_cleanup_chain. */
5949 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
5951 arg1
->data
.pointer
= old_chain
;
5953 add_continuation (until_break_command_continuation
, arg1
);
5956 /* Keep within the current frame, or in frames called by the current
5960 sal
= find_pc_line (get_frame_pc (prev_frame
), 0);
5961 sal
.pc
= get_frame_pc (prev_frame
);
5962 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (prev_frame
),
5964 if (!target_can_async_p ())
5965 make_cleanup_delete_breakpoint (breakpoint
);
5967 make_exec_cleanup_delete_breakpoint (breakpoint
);
5970 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
5971 /* Do the cleanups now, anly if we are not running asynchronously,
5972 of if we are, but the target is still synchronous. */
5973 if (!target_can_async_p ())
5974 do_cleanups (old_chain
);
5978 ep_skip_leading_whitespace (char **s
)
5980 if ((s
== NULL
) || (*s
== NULL
))
5982 while (isspace (**s
))
5986 /* This function examines a string, and attempts to find a token
5987 that might be an event name in the leading characters. If a
5988 possible match is found, a pointer to the last character of
5989 the token is returned. Else, NULL is returned. */
5992 ep_find_event_name_end (char *arg
)
5995 char *event_name_end
= NULL
;
5997 /* If we could depend upon the presense of strrpbrk, we'd use that... */
6001 /* We break out of the loop when we find a token delimiter.
6002 Basically, we're looking for alphanumerics and underscores;
6003 anything else delimites the token. */
6006 if (!isalnum (*s
) && (*s
!= '_'))
6012 return event_name_end
;
6016 /* This function attempts to parse an optional "if <cond>" clause
6017 from the arg string. If one is not found, it returns NULL.
6019 Else, it returns a pointer to the condition string. (It does not
6020 attempt to evaluate the string against a particular block.) And,
6021 it updates arg to point to the first character following the parsed
6022 if clause in the arg string. */
6025 ep_parse_optional_if_clause (char **arg
)
6029 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
6032 /* Skip the "if" keyword. */
6035 /* Skip any extra leading whitespace, and record the start of the
6036 condition string. */
6037 ep_skip_leading_whitespace (arg
);
6040 /* Assume that the condition occupies the remainder of the arg string. */
6041 (*arg
) += strlen (cond_string
);
6046 /* This function attempts to parse an optional filename from the arg
6047 string. If one is not found, it returns NULL.
6049 Else, it returns a pointer to the parsed filename. (This function
6050 makes no attempt to verify that a file of that name exists, or is
6051 accessible.) And, it updates arg to point to the first character
6052 following the parsed filename in the arg string.
6054 Note that clients needing to preserve the returned filename for
6055 future access should copy it to their own buffers. */
6057 ep_parse_optional_filename (char **arg
)
6059 static char filename
[1024];
6064 if ((*arg_p
== '\0') || isspace (*arg_p
))
6082 /* Commands to deal with catching events, such as signals, exceptions,
6083 process start/exit, etc. */
6087 catch_fork
, catch_vfork
6092 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6095 char *cond_string
= NULL
;
6097 ep_skip_leading_whitespace (&arg
);
6099 /* The allowed syntax is:
6101 catch [v]fork if <cond>
6103 First, check if there's an if clause. */
6104 cond_string
= ep_parse_optional_if_clause (&arg
);
6106 if ((*arg
!= '\0') && !isspace (*arg
))
6107 error (_("Junk at end of arguments."));
6109 /* If this target supports it, create a fork or vfork catchpoint
6110 and enable reporting of such events. */
6114 create_fork_event_catchpoint (tempflag
, cond_string
);
6117 create_vfork_event_catchpoint (tempflag
, cond_string
);
6120 error (_("unsupported or unknown fork kind; cannot catch it"));
6126 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6128 char *cond_string
= NULL
;
6130 ep_skip_leading_whitespace (&arg
);
6132 /* The allowed syntax is:
6134 catch exec if <cond>
6136 First, check if there's an if clause. */
6137 cond_string
= ep_parse_optional_if_clause (&arg
);
6139 if ((*arg
!= '\0') && !isspace (*arg
))
6140 error (_("Junk at end of arguments."));
6142 /* If this target supports it, create an exec catchpoint
6143 and enable reporting of such events. */
6144 create_exec_event_catchpoint (tempflag
, cond_string
);
6148 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6150 char *dll_pathname
= NULL
;
6151 char *cond_string
= NULL
;
6153 ep_skip_leading_whitespace (&arg
);
6155 /* The allowed syntax is:
6157 catch load if <cond>
6158 catch load <filename>
6159 catch load <filename> if <cond>
6161 The user is not allowed to specify the <filename> after an
6164 We'll ignore the pathological case of a file named "if".
6166 First, check if there's an if clause. If so, then there
6167 cannot be a filename. */
6168 cond_string
= ep_parse_optional_if_clause (&arg
);
6170 /* If there was an if clause, then there cannot be a filename.
6171 Else, there might be a filename and an if clause. */
6172 if (cond_string
== NULL
)
6174 dll_pathname
= ep_parse_optional_filename (&arg
);
6175 ep_skip_leading_whitespace (&arg
);
6176 cond_string
= ep_parse_optional_if_clause (&arg
);
6179 if ((*arg
!= '\0') && !isspace (*arg
))
6180 error (_("Junk at end of arguments."));
6182 /* Create a load breakpoint that only triggers when a load of
6183 the specified dll (or any dll, if no pathname was specified)
6185 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6186 dll_pathname
, cond_string
);
6190 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6192 char *dll_pathname
= NULL
;
6193 char *cond_string
= NULL
;
6195 ep_skip_leading_whitespace (&arg
);
6197 /* The allowed syntax is:
6199 catch unload if <cond>
6200 catch unload <filename>
6201 catch unload <filename> if <cond>
6203 The user is not allowed to specify the <filename> after an
6206 We'll ignore the pathological case of a file named "if".
6208 First, check if there's an if clause. If so, then there
6209 cannot be a filename. */
6210 cond_string
= ep_parse_optional_if_clause (&arg
);
6212 /* If there was an if clause, then there cannot be a filename.
6213 Else, there might be a filename and an if clause. */
6214 if (cond_string
== NULL
)
6216 dll_pathname
= ep_parse_optional_filename (&arg
);
6217 ep_skip_leading_whitespace (&arg
);
6218 cond_string
= ep_parse_optional_if_clause (&arg
);
6221 if ((*arg
!= '\0') && !isspace (*arg
))
6222 error (_("Junk at end of arguments."));
6224 /* Create an unload breakpoint that only triggers when an unload of
6225 the specified dll (or any dll, if no pathname was specified)
6227 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6228 dll_pathname
, cond_string
);
6231 static enum print_stop_action
6232 print_exception_catchpoint (struct breakpoint
*b
)
6234 annotate_catchpoint (b
->number
);
6236 if (strstr (b
->addr_string
, "throw") != NULL
)
6237 printf_filtered (_("\nCatchpoint %d (exception thrown)\n"),
6240 printf_filtered (_("\nCatchpoint %d (exception caught)\n"),
6243 return PRINT_SRC_AND_LOC
;
6247 print_one_exception_catchpoint (struct breakpoint
*b
, CORE_ADDR
*last_addr
)
6252 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
6255 *last_addr
= b
->loc
->address
;
6256 if (strstr (b
->addr_string
, "throw") != NULL
)
6257 ui_out_field_string (uiout
, "what", "exception throw");
6259 ui_out_field_string (uiout
, "what", "exception catch");
6263 print_mention_exception_catchpoint (struct breakpoint
*b
)
6265 if (strstr (b
->addr_string
, "throw") != NULL
)
6266 printf_filtered (_("Catchpoint %d (throw)"), b
->number
);
6268 printf_filtered (_("Catchpoint %d (catch)"), b
->number
);
6271 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops
= {
6272 print_exception_catchpoint
,
6273 print_one_exception_catchpoint
,
6274 print_mention_exception_catchpoint
6278 handle_gnu_v3_exceptions (int tempflag
, char *cond_string
,
6279 enum exception_event_kind ex_event
, int from_tty
)
6281 char *trigger_func_name
, *nameptr
;
6282 struct symtabs_and_lines sals
;
6283 struct breakpoint
*b
;
6285 if (ex_event
== EX_EVENT_CATCH
)
6286 trigger_func_name
= xstrdup ("__cxa_begin_catch");
6288 trigger_func_name
= xstrdup ("__cxa_throw");
6290 nameptr
= trigger_func_name
;
6291 sals
= decode_line_1 (&nameptr
, 1, NULL
, 0, NULL
, NULL
);
6292 if (sals
.nelts
== 0)
6294 xfree (trigger_func_name
);
6298 b
= set_raw_breakpoint (sals
.sals
[0], bp_breakpoint
);
6299 set_breakpoint_count (breakpoint_count
+ 1);
6300 b
->number
= breakpoint_count
;
6301 b
->cond_string
= (cond_string
== NULL
) ?
6302 NULL
: savestring (cond_string
, strlen (cond_string
));
6304 b
->addr_string
= trigger_func_name
;
6305 b
->enable_state
= bp_enabled
;
6306 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6307 b
->ops
= &gnu_v3_exception_catchpoint_ops
;
6314 /* Deal with "catch catch" and "catch throw" commands */
6317 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6318 int tempflag
, int from_tty
)
6320 char *cond_string
= NULL
;
6321 struct symtab_and_line
*sal
= NULL
;
6323 ep_skip_leading_whitespace (&arg
);
6325 cond_string
= ep_parse_optional_if_clause (&arg
);
6327 if ((*arg
!= '\0') && !isspace (*arg
))
6328 error (_("Junk at end of arguments."));
6330 if ((ex_event
!= EX_EVENT_THROW
) &&
6331 (ex_event
!= EX_EVENT_CATCH
))
6332 error (_("Unsupported or unknown exception event; cannot catch it"));
6334 if (handle_gnu_v3_exceptions (tempflag
, cond_string
, ex_event
, from_tty
))
6337 warning (_("Unsupported with this platform/compiler combination."));
6340 /* Create a breakpoint struct for Ada exception catchpoints. */
6343 create_ada_exception_breakpoint (struct symtab_and_line sal
,
6347 struct expression
*cond
,
6348 struct breakpoint_ops
*ops
,
6352 struct breakpoint
*b
;
6356 describe_other_breakpoints (sal
.pc
, sal
.section
, -1);
6357 /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
6358 version for exception catchpoints, because two catchpoints
6359 used for different exception names will use the same address.
6360 In this case, a "breakpoint ... also set at..." warning is
6361 unproductive. Besides. the warning phrasing is also a bit
6362 inapropriate, we should use the word catchpoint, and tell
6363 the user what type of catchpoint it is. The above is good
6364 enough for now, though. */
6367 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6368 set_breakpoint_count (breakpoint_count
+ 1);
6370 b
->enable_state
= bp_enabled
;
6371 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6372 b
->number
= breakpoint_count
;
6373 b
->ignore_count
= 0;
6374 b
->loc
->cond
= cond
;
6375 b
->addr_string
= addr_string
;
6376 b
->language
= language_ada
;
6377 b
->cond_string
= cond_string
;
6378 b
->exp_string
= exp_string
;
6385 /* Implement the "catch exception" command. */
6388 catch_ada_exception_command (char *arg
, int tempflag
, int from_tty
)
6390 struct symtab_and_line sal
;
6392 char *addr_string
= NULL
;
6393 char *exp_string
= NULL
;
6394 char *cond_string
= NULL
;
6395 struct expression
*cond
= NULL
;
6396 struct breakpoint_ops
*ops
= NULL
;
6398 sal
= ada_decode_exception_location (arg
, &addr_string
, &exp_string
,
6399 &cond_string
, &cond
, &ops
);
6400 create_ada_exception_breakpoint (sal
, addr_string
, exp_string
,
6401 cond_string
, cond
, ops
, tempflag
,
6405 /* Implement the "catch assert" command. */
6408 catch_assert_command (char *arg
, int tempflag
, int from_tty
)
6410 struct symtab_and_line sal
;
6411 char *addr_string
= NULL
;
6412 struct breakpoint_ops
*ops
= NULL
;
6414 sal
= ada_decode_assert_location (arg
, &addr_string
, &ops
);
6415 create_ada_exception_breakpoint (sal
, addr_string
, NULL
, NULL
, NULL
, ops
,
6416 tempflag
, from_tty
);
6420 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6423 /* The first argument may be an event name, such as "start" or "load".
6424 If so, then handle it as such. If it doesn't match an event name,
6425 then attempt to interpret it as an exception name. (This latter is
6426 the v4.16-and-earlier GDB meaning of the "catch" command.)
6428 First, try to find the bounds of what might be an event name. */
6429 char *arg1_start
= arg
;
6433 if (arg1_start
== NULL
)
6435 /* Old behaviour was to use pre-v-4.16 syntax */
6436 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6438 /* Now, this is not allowed */
6439 error (_("Catch requires an event name."));
6442 arg1_end
= ep_find_event_name_end (arg1_start
);
6443 if (arg1_end
== NULL
)
6444 error (_("catch requires an event"));
6445 arg1_length
= arg1_end
+ 1 - arg1_start
;
6447 /* Try to match what we found against known event names. */
6448 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6450 error (_("Catch of signal not yet implemented"));
6452 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6454 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6455 tempflag
, from_tty
);
6457 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6459 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6460 tempflag
, from_tty
);
6462 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6464 error (_("Catch of thread_start not yet implemented"));
6466 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6468 error (_("Catch of thread_exit not yet implemented"));
6470 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6472 error (_("Catch of thread_join not yet implemented"));
6474 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6476 error (_("Catch of start not yet implemented"));
6478 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6480 error (_("Catch of exit not yet implemented"));
6482 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6484 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6486 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6488 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6490 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6492 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6494 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6496 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6498 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6500 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6502 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6504 error (_("Catch of stop not yet implemented"));
6506 else if (strncmp (arg1_start
, "exception", arg1_length
) == 0)
6508 catch_ada_exception_command (arg1_end
+ 1, tempflag
, from_tty
);
6511 else if (strncmp (arg1_start
, "assert", arg1_length
) == 0)
6513 catch_assert_command (arg1_end
+ 1, tempflag
, from_tty
);
6516 /* This doesn't appear to be an event name */
6520 /* Pre-v.4.16 behaviour was to treat the argument
6521 as the name of an exception */
6522 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6523 /* Now this is not allowed */
6524 error (_("Unknown event kind specified for catch"));
6530 catch_command (char *arg
, int from_tty
)
6532 catch_command_1 (arg
, 0, from_tty
);
6537 tcatch_command (char *arg
, int from_tty
)
6539 catch_command_1 (arg
, 1, from_tty
);
6542 /* Delete breakpoints by address or line. */
6545 clear_command (char *arg
, int from_tty
)
6547 struct breakpoint
*b
;
6548 VEC(breakpoint_p
) *found
= 0;
6551 struct symtabs_and_lines sals
;
6552 struct symtab_and_line sal
;
6557 sals
= decode_line_spec (arg
, 1);
6562 sals
.sals
= (struct symtab_and_line
*)
6563 xmalloc (sizeof (struct symtab_and_line
));
6564 make_cleanup (xfree
, sals
.sals
);
6565 init_sal (&sal
); /* initialize to zeroes */
6566 sal
.line
= default_breakpoint_line
;
6567 sal
.symtab
= default_breakpoint_symtab
;
6568 sal
.pc
= default_breakpoint_address
;
6569 if (sal
.symtab
== 0)
6570 error (_("No source file specified."));
6578 /* We don't call resolve_sal_pc here. That's not
6579 as bad as it seems, because all existing breakpoints
6580 typically have both file/line and pc set. So, if
6581 clear is given file/line, we can match this to existing
6582 breakpoint without obtaining pc at all.
6584 We only support clearing given the address explicitly
6585 present in breakpoint table. Say, we've set breakpoint
6586 at file:line. There were several PC values for that file:line,
6587 due to optimization, all in one block.
6588 We've picked one PC value. If "clear" is issued with another
6589 PC corresponding to the same file:line, the breakpoint won't
6590 be cleared. We probably can still clear the breakpoint, but
6591 since the other PC value is never presented to user, user
6592 can only find it by guessing, and it does not seem important
6595 /* For each line spec given, delete bps which correspond
6596 to it. Do it in two passes, solely to preserve the current
6597 behavior that from_tty is forced true if we delete more than
6601 for (i
= 0; i
< sals
.nelts
; i
++)
6603 /* If exact pc given, clear bpts at that pc.
6604 If line given (pc == 0), clear all bpts on specified line.
6605 If defaulting, clear all bpts on default line
6608 defaulting sal.pc != 0 tests to do
6613 1 0 <can't happen> */
6617 /* Find all matching breakpoints and add them to
6622 /* Are we going to delete b? */
6623 if (b
->type
!= bp_none
6624 && b
->type
!= bp_watchpoint
6625 && b
->type
!= bp_hardware_watchpoint
6626 && b
->type
!= bp_read_watchpoint
6627 && b
->type
!= bp_access_watchpoint
)
6629 struct bp_location
*loc
= b
->loc
;
6630 for (; loc
; loc
= loc
->next
)
6632 int pc_match
= sal
.pc
6633 && (loc
->address
== sal
.pc
)
6634 && (!section_is_overlay (loc
->section
)
6635 || loc
->section
== sal
.section
);
6636 int line_match
= ((default_match
|| (0 == sal
.pc
))
6637 && b
->source_file
!= NULL
6638 && sal
.symtab
!= NULL
6639 && strcmp (b
->source_file
, sal
.symtab
->filename
) == 0
6640 && b
->line_number
== sal
.line
);
6641 if (pc_match
|| line_match
)
6650 VEC_safe_push(breakpoint_p
, found
, b
);
6653 /* Now go thru the 'found' chain and delete them. */
6654 if (VEC_empty(breakpoint_p
, found
))
6657 error (_("No breakpoint at %s."), arg
);
6659 error (_("No breakpoint at this line."));
6662 if (VEC_length(breakpoint_p
, found
) > 1)
6663 from_tty
= 1; /* Always report if deleted more than one */
6666 if (VEC_length(breakpoint_p
, found
) == 1)
6667 printf_unfiltered (_("Deleted breakpoint "));
6669 printf_unfiltered (_("Deleted breakpoints "));
6671 breakpoints_changed ();
6673 for (ix
= 0; VEC_iterate(breakpoint_p
, found
, ix
, b
); ix
++)
6676 printf_unfiltered ("%d ", b
->number
);
6677 delete_breakpoint (b
);
6680 putchar_unfiltered ('\n');
6683 /* Delete breakpoint in BS if they are `delete' breakpoints and
6684 all breakpoints that are marked for deletion, whether hit or not.
6685 This is called after any breakpoint is hit, or after errors. */
6688 breakpoint_auto_delete (bpstat bs
)
6690 struct breakpoint
*b
, *temp
;
6692 for (; bs
; bs
= bs
->next
)
6693 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
->disposition
== disp_del
6695 delete_breakpoint (bs
->breakpoint_at
->owner
);
6697 ALL_BREAKPOINTS_SAFE (b
, temp
)
6699 if (b
->disposition
== disp_del_at_next_stop
)
6700 delete_breakpoint (b
);
6704 /* Remove locations of breakpoint BPT from
6705 the global list of breakpoint locations. */
6708 unlink_locations_from_global_list (struct breakpoint
*bpt
)
6710 /* This code assumes that the locations
6711 of a breakpoint are found in the global list
6712 in the same order, but not necessary adjacent. */
6713 struct bp_location
**tmp
= &bp_location_chain
;
6714 struct bp_location
*here
= bpt
->loc
;
6719 for (; *tmp
&& here
;)
6723 *tmp
= here
->global_next
;
6728 tmp
= &((*tmp
)->global_next
);
6733 /* Delete a breakpoint and clean up all traces of it in the data
6737 delete_breakpoint (struct breakpoint
*bpt
)
6739 struct breakpoint
*b
;
6741 struct bp_location
*loc
;
6743 gdb_assert (bpt
!= NULL
);
6745 /* Has this bp already been deleted? This can happen because multiple
6746 lists can hold pointers to bp's. bpstat lists are especial culprits.
6748 One example of this happening is a watchpoint's scope bp. When the
6749 scope bp triggers, we notice that the watchpoint is out of scope, and
6750 delete it. We also delete its scope bp. But the scope bp is marked
6751 "auto-deleting", and is already on a bpstat. That bpstat is then
6752 checked for auto-deleting bp's, which are deleted.
6754 A real solution to this problem might involve reference counts in bp's,
6755 and/or giving them pointers back to their referencing bpstat's, and
6756 teaching delete_breakpoint to only free a bp's storage when no more
6757 references were extent. A cheaper bandaid was chosen. */
6758 if (bpt
->type
== bp_none
)
6761 if (deprecated_delete_breakpoint_hook
)
6762 deprecated_delete_breakpoint_hook (bpt
);
6763 breakpoint_delete_event (bpt
->number
);
6765 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6768 remove_breakpoint (loc
, mark_inserted
);
6770 free_valchain (loc
);
6775 if (loc
->function_name
)
6776 xfree (loc
->function_name
);
6779 if (breakpoint_chain
== bpt
)
6780 breakpoint_chain
= bpt
->next
;
6785 b
->next
= bpt
->next
;
6789 unlink_locations_from_global_list (bpt
);
6791 check_duplicates (bpt
);
6793 if (bpt
->type
!= bp_hardware_watchpoint
6794 && bpt
->type
!= bp_read_watchpoint
6795 && bpt
->type
!= bp_access_watchpoint
6796 && bpt
->type
!= bp_catch_fork
6797 && bpt
->type
!= bp_catch_vfork
6798 && bpt
->type
!= bp_catch_exec
)
6799 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6801 /* If this breakpoint location was inserted, and there is
6802 another breakpoint at the same address, we need to
6803 insert the other breakpoint. */
6806 struct bp_location
*loc2
;
6807 ALL_BP_LOCATIONS (loc2
)
6808 if (loc2
->address
== loc
->address
6809 && loc2
->section
== loc
->section
6811 && loc2
->owner
->enable_state
!= bp_disabled
6813 && !loc2
->shlib_disabled
6814 && loc2
->owner
->enable_state
!= bp_call_disabled
)
6818 /* We should never reach this point if there is a permanent
6819 breakpoint at the same address as the one being deleted.
6820 If there is a permanent breakpoint somewhere, it should
6821 always be the only one inserted. */
6822 if (loc2
->owner
->enable_state
== bp_permanent
)
6823 internal_error (__FILE__
, __LINE__
,
6824 _("another breakpoint was inserted on top of "
6825 "a permanent breakpoint"));
6827 memset (&loc2
->target_info
, 0, sizeof (loc2
->target_info
));
6828 loc2
->target_info
.placed_address
= loc2
->address
;
6829 if (b
->type
== bp_hardware_breakpoint
)
6830 val
= target_insert_hw_breakpoint (&loc2
->target_info
);
6832 val
= target_insert_breakpoint (&loc2
->target_info
);
6834 /* If there was an error in the insert, print a message, then stop execution. */
6837 struct ui_file
*tmp_error_stream
= mem_fileopen ();
6838 make_cleanup_ui_file_delete (tmp_error_stream
);
6841 if (b
->type
== bp_hardware_breakpoint
)
6843 fprintf_unfiltered (tmp_error_stream
,
6844 "Cannot insert hardware breakpoint %d.\n"
6845 "You may have requested too many hardware breakpoints.\n",
6850 fprintf_unfiltered (tmp_error_stream
, "Cannot insert breakpoint %d.\n", b
->number
);
6851 fprintf_filtered (tmp_error_stream
, "Error accessing memory address ");
6852 deprecated_print_address_numeric (loc2
->address
, 1, tmp_error_stream
);
6853 fprintf_filtered (tmp_error_stream
, ": %s.\n",
6854 safe_strerror (val
));
6857 fprintf_unfiltered (tmp_error_stream
,"The same program may be running in another process.");
6858 target_terminal_ours_for_output ();
6859 error_stream(tmp_error_stream
);
6867 free_command_lines (&bpt
->commands
);
6868 if (bpt
->cond_string
!= NULL
)
6869 xfree (bpt
->cond_string
);
6870 if (bpt
->addr_string
!= NULL
)
6871 xfree (bpt
->addr_string
);
6872 if (bpt
->exp
!= NULL
)
6874 if (bpt
->exp_string
!= NULL
)
6875 xfree (bpt
->exp_string
);
6876 if (bpt
->val
!= NULL
)
6877 value_free (bpt
->val
);
6878 if (bpt
->source_file
!= NULL
)
6879 xfree (bpt
->source_file
);
6880 if (bpt
->dll_pathname
!= NULL
)
6881 xfree (bpt
->dll_pathname
);
6882 if (bpt
->triggered_dll_pathname
!= NULL
)
6883 xfree (bpt
->triggered_dll_pathname
);
6884 if (bpt
->exec_pathname
!= NULL
)
6885 xfree (bpt
->exec_pathname
);
6887 /* Be sure no bpstat's are pointing at it after it's been freed. */
6888 /* FIXME, how can we find all bpstat's?
6889 We just check stop_bpstat for now. Note that we cannot just
6890 remove bpstats pointing at bpt from the stop_bpstat list
6891 entirely, as breakpoint commands are associated with the bpstat;
6892 if we remove it here, then the later call to
6893 bpstat_do_actions (&stop_bpstat);
6894 in event-top.c won't do anything, and temporary breakpoints
6895 with commands won't work. */
6896 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6897 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
== bpt
)
6899 bs
->breakpoint_at
= NULL
;
6901 /* bs->commands will be freed later. */
6903 /* On the chance that someone will soon try again to delete this same
6904 bp, we mark it as deleted before freeing its storage. */
6905 bpt
->type
= bp_none
;
6907 for (loc
= bpt
->loc
; loc
;)
6909 struct bp_location
*loc_next
= loc
->next
;
6917 do_delete_breakpoint_cleanup (void *b
)
6919 delete_breakpoint (b
);
6923 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6925 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6929 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6931 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6935 delete_command (char *arg
, int from_tty
)
6937 struct breakpoint
*b
, *temp
;
6943 int breaks_to_delete
= 0;
6945 /* Delete all breakpoints if no argument.
6946 Do not delete internal or call-dummy breakpoints, these
6947 have to be deleted with an explicit breakpoint number argument. */
6950 if (b
->type
!= bp_call_dummy
&&
6951 b
->type
!= bp_shlib_event
&&
6952 b
->type
!= bp_thread_event
&&
6953 b
->type
!= bp_overlay_event
&&
6956 breaks_to_delete
= 1;
6961 /* Ask user only if there are some breakpoints to delete. */
6963 || (breaks_to_delete
&& query (_("Delete all breakpoints? "))))
6965 ALL_BREAKPOINTS_SAFE (b
, temp
)
6967 if (b
->type
!= bp_call_dummy
&&
6968 b
->type
!= bp_shlib_event
&&
6969 b
->type
!= bp_thread_event
&&
6970 b
->type
!= bp_overlay_event
&&
6972 delete_breakpoint (b
);
6977 map_breakpoint_numbers (arg
, delete_breakpoint
);
6981 all_locations_are_pending (struct bp_location
*loc
)
6983 for (; loc
; loc
= loc
->next
)
6984 if (!loc
->shlib_disabled
)
6990 update_breakpoint_locations (struct breakpoint
*b
,
6991 struct symtabs_and_lines sals
)
6995 struct bp_location
*existing_locations
= b
->loc
;
6997 /* If there's no new locations, and all existing locations
6998 are pending, don't do anything. This optimizes
6999 the common case where all locations are in the same
7000 shared library, that was unloaded. We'd like to
7001 retain the location, so that when the library
7002 is loaded again, we don't loose the enabled/disabled
7003 status of the individual locations. */
7004 if (all_locations_are_pending (existing_locations
) && sals
.nelts
== 0)
7007 unlink_locations_from_global_list (b
);
7010 for (i
= 0; i
< sals
.nelts
; ++i
)
7012 struct bp_location
*new_loc
=
7013 add_location_to_breakpoint (b
, b
->type
, &(sals
.sals
[i
]));
7015 /* Reparse conditions, they might contain references to the
7017 if (b
->cond_string
!= NULL
)
7019 struct gdb_exception e
;
7022 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7024 new_loc
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
),
7029 warning (_("failed to reevaluate condition for breakpoint %d: %s"),
7030 b
->number
, e
.message
);
7031 new_loc
->enabled
= 0;
7035 if (b
->source_file
!= NULL
)
7036 xfree (b
->source_file
);
7037 if (sals
.sals
[i
].symtab
== NULL
)
7038 b
->source_file
= NULL
;
7041 savestring (sals
.sals
[i
].symtab
->filename
,
7042 strlen (sals
.sals
[i
].symtab
->filename
));
7044 if (b
->line_number
== 0)
7045 b
->line_number
= sals
.sals
[i
].line
;
7048 /* If possible, carry over 'disable' status from existing breakpoints. */
7050 struct bp_location
*e
= existing_locations
;
7051 for (; e
; e
= e
->next
)
7053 if (!e
->enabled
&& e
->function_name
)
7055 struct bp_location
*l
= b
->loc
;
7056 for (; l
; l
= l
->next
)
7057 if (l
->function_name
7058 && strcmp (e
->function_name
, l
->function_name
) == 0)
7067 while (existing_locations
)
7069 struct bp_location
*next
= existing_locations
->next
;
7070 free_bp_location (existing_locations
);
7071 existing_locations
= next
;
7076 /* Reset a breakpoint given it's struct breakpoint * BINT.
7077 The value we return ends up being the return value from catch_errors.
7078 Unused in this case. */
7081 breakpoint_re_set_one (void *bint
)
7083 /* get past catch_errs */
7084 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7088 int *not_found_ptr
= ¬_found
;
7089 struct symtabs_and_lines sals
= {};
7090 struct symtabs_and_lines expanded
;
7092 enum enable_state save_enable
;
7093 struct gdb_exception e
;
7099 warning (_("attempted to reset apparently deleted breakpoint #%d?"),
7103 case bp_hardware_breakpoint
:
7105 case bp_catch_unload
:
7106 if (b
->addr_string
== NULL
)
7108 /* Anything without a string can't be re-set. */
7109 delete_breakpoint (b
);
7113 set_language (b
->language
);
7114 input_radix
= b
->input_radix
;
7116 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7118 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
,
7123 int not_found_and_ok
= 0;
7124 /* For pending breakpoints, it's expected that parsing
7125 will fail until the right shared library is loaded.
7126 User has already told to create pending breakpoints and
7127 don't need extra messages. If breakpoint is in bp_shlib_disabled
7128 state, then user already saw the message about that breakpoint
7129 being disabled, and don't want to see more errors. */
7131 && (b
->condition_not_parsed
7132 || (b
->loc
&& b
->loc
->shlib_disabled
)
7133 || b
->enable_state
== bp_disabled
))
7134 not_found_and_ok
= 1;
7136 if (!not_found_and_ok
)
7138 /* We surely don't want to warn about the same breakpoint
7139 10 times. One solution, implemented here, is disable
7140 the breakpoint on error. Another solution would be to
7141 have separate 'warning emitted' flag. Since this
7142 happens only when a binary has changed, I don't know
7143 which approach is better. */
7144 b
->enable_state
= bp_disabled
;
7145 throw_exception (e
);
7152 gdb_assert (sals
.nelts
== 1);
7153 resolve_sal_pc (&sals
.sals
[0]);
7154 if (b
->condition_not_parsed
&& s
&& s
[0])
7156 char *cond_string
= 0;
7158 find_condition_and_thread (s
, sals
.sals
[0].pc
,
7159 &cond_string
, &thread
);
7161 b
->cond_string
= cond_string
;
7163 b
->condition_not_parsed
= 0;
7165 expanded
= expand_line_sal_maybe (sals
.sals
[0]);
7166 update_breakpoint_locations (b
, expanded
);
7168 /* Now that this is re-enabled, check_duplicates
7170 check_duplicates (b
);
7176 case bp_hardware_watchpoint
:
7177 case bp_read_watchpoint
:
7178 case bp_access_watchpoint
:
7179 innermost_block
= NULL
;
7180 /* The issue arises of what context to evaluate this in. The
7181 same one as when it was set, but what does that mean when
7182 symbols have been re-read? We could save the filename and
7183 functionname, but if the context is more local than that, the
7184 best we could do would be something like how many levels deep
7185 and which index at that particular level, but that's going to
7186 be less stable than filenames or function names. */
7188 /* So for now, just use a global context. */
7192 /* Avoid re-freeing b->exp if an error during the call to
7193 parse_expression. */
7196 b
->exp
= parse_expression (b
->exp_string
);
7197 b
->exp_valid_block
= innermost_block
;
7198 mark
= value_mark ();
7201 value_free (b
->val
);
7202 /* Avoid re-freeing b->val if an error during the call to
7203 evaluate_expression. */
7206 b
->val
= evaluate_expression (b
->exp
);
7207 release_value (b
->val
);
7208 if (value_lazy (b
->val
) && breakpoint_enabled (b
))
7209 value_fetch_lazy (b
->val
);
7211 if (b
->cond_string
!= NULL
)
7216 xfree (b
->loc
->cond
);
7217 /* Avoid re-freeing b->exp if an error during the call
7219 b
->loc
->cond
= NULL
;
7221 b
->loc
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7223 if (breakpoint_enabled (b
))
7225 value_free_to_mark (mark
);
7227 /* We needn't really do anything to reset these, since the mask
7228 that requests them is unaffected by e.g., new libraries being
7231 case bp_catch_vfork
:
7236 printf_filtered (_("Deleting unknown breakpoint type %d\n"), b
->type
);
7238 /* Delete longjmp and overlay event breakpoints; they will be
7239 reset later by breakpoint_re_set. */
7241 case bp_longjmp_resume
:
7242 case bp_overlay_event
:
7243 delete_breakpoint (b
);
7246 /* This breakpoint is special, it's set up when the inferior
7247 starts and we really don't want to touch it. */
7248 case bp_shlib_event
:
7250 /* Like bp_shlib_event, this breakpoint type is special.
7251 Once it is set up, we do not want to touch it. */
7252 case bp_thread_event
:
7254 /* Keep temporary breakpoints, which can be encountered when we step
7255 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7256 Otherwise these should have been blown away via the cleanup chain
7257 or by breakpoint_init_inferior when we rerun the executable. */
7260 case bp_watchpoint_scope
:
7262 case bp_step_resume
:
7269 /* Re-set all breakpoints after symbols have been re-loaded. */
7271 breakpoint_re_set (void)
7273 struct breakpoint
*b
, *temp
;
7274 enum language save_language
;
7275 int save_input_radix
;
7277 save_language
= current_language
->la_language
;
7278 save_input_radix
= input_radix
;
7279 ALL_BREAKPOINTS_SAFE (b
, temp
)
7281 /* Format possible error msg */
7282 char *message
= xstrprintf ("Error in re-setting breakpoint %d: ",
7284 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7285 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7286 do_cleanups (cleanups
);
7288 set_language (save_language
);
7289 input_radix
= save_input_radix
;
7291 if (gdbarch_get_longjmp_target_p (current_gdbarch
))
7293 create_longjmp_breakpoint ("longjmp");
7294 create_longjmp_breakpoint ("_longjmp");
7295 create_longjmp_breakpoint ("siglongjmp");
7296 create_longjmp_breakpoint ("_siglongjmp");
7297 create_longjmp_breakpoint (NULL
);
7300 create_overlay_event_breakpoint ("_ovly_debug_event");
7303 /* Reset the thread number of this breakpoint:
7305 - If the breakpoint is for all threads, leave it as-is.
7306 - Else, reset it to the current thread for inferior_ptid. */
7308 breakpoint_re_set_thread (struct breakpoint
*b
)
7310 if (b
->thread
!= -1)
7312 if (in_thread_list (inferior_ptid
))
7313 b
->thread
= pid_to_thread_id (inferior_ptid
);
7317 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7318 If from_tty is nonzero, it prints a message to that effect,
7319 which ends with a period (no newline). */
7322 set_ignore_count (int bptnum
, int count
, int from_tty
)
7324 struct breakpoint
*b
;
7330 if (b
->number
== bptnum
)
7332 b
->ignore_count
= count
;
7336 printf_filtered (_("Will stop next time breakpoint %d is reached."),
7338 else if (count
== 1)
7339 printf_filtered (_("Will ignore next crossing of breakpoint %d."),
7342 printf_filtered (_("Will ignore next %d crossings of breakpoint %d."),
7345 breakpoints_changed ();
7346 breakpoint_modify_event (b
->number
);
7350 error (_("No breakpoint number %d."), bptnum
);
7353 /* Clear the ignore counts of all breakpoints. */
7355 breakpoint_clear_ignore_counts (void)
7357 struct breakpoint
*b
;
7360 b
->ignore_count
= 0;
7363 /* Command to set ignore-count of breakpoint N to COUNT. */
7366 ignore_command (char *args
, int from_tty
)
7372 error_no_arg (_("a breakpoint number"));
7374 num
= get_number (&p
);
7376 error (_("bad breakpoint number: '%s'"), args
);
7378 error (_("Second argument (specified ignore-count) is missing."));
7380 set_ignore_count (num
,
7381 longest_to_int (value_as_long (parse_and_eval (p
))),
7384 printf_filtered ("\n");
7387 /* Call FUNCTION on each of the breakpoints
7388 whose numbers are given in ARGS. */
7391 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7396 struct breakpoint
*b
, *tmp
;
7400 error_no_arg (_("one or more breakpoint numbers"));
7407 num
= get_number_or_range (&p1
);
7410 warning (_("bad breakpoint number at or near '%s'"), p
);
7414 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7415 if (b
->number
== num
)
7417 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7420 if (related_breakpoint
)
7421 function (related_breakpoint
);
7425 printf_unfiltered (_("No breakpoint number %d.\n"), num
);
7431 static struct bp_location
*
7432 find_location_by_number (char *number
)
7434 char *dot
= strchr (number
, '.');
7438 struct breakpoint
*b
;
7439 struct bp_location
*loc
;
7444 bp_num
= get_number_or_range (&p1
);
7446 error (_("Bad breakpoint number '%s'"), number
);
7449 if (b
->number
== bp_num
)
7454 if (!b
|| b
->number
!= bp_num
)
7455 error (_("Bad breakpoint number '%s'"), number
);
7458 loc_num
= get_number_or_range (&p1
);
7460 error (_("Bad breakpoint location number '%s'"), number
);
7464 for (;loc_num
&& loc
; --loc_num
, loc
= loc
->next
)
7467 error (_("Bad breakpoint location number '%s'"), dot
+1);
7473 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7474 If from_tty is nonzero, it prints a message to that effect,
7475 which ends with a period (no newline). */
7478 disable_breakpoint (struct breakpoint
*bpt
)
7480 /* Never disable a watchpoint scope breakpoint; we want to
7481 hit them when we leave scope so we can delete both the
7482 watchpoint and its scope breakpoint at that time. */
7483 if (bpt
->type
== bp_watchpoint_scope
)
7486 /* You can't disable permanent breakpoints. */
7487 if (bpt
->enable_state
== bp_permanent
)
7490 bpt
->enable_state
= bp_disabled
;
7492 check_duplicates (bpt
);
7494 if (deprecated_modify_breakpoint_hook
)
7495 deprecated_modify_breakpoint_hook (bpt
);
7496 breakpoint_modify_event (bpt
->number
);
7500 disable_command (char *args
, int from_tty
)
7502 struct breakpoint
*bpt
;
7504 ALL_BREAKPOINTS (bpt
)
7508 warning (_("attempted to disable apparently deleted breakpoint #%d?"),
7513 case bp_catch_unload
:
7515 case bp_catch_vfork
:
7517 case bp_hardware_breakpoint
:
7519 case bp_hardware_watchpoint
:
7520 case bp_read_watchpoint
:
7521 case bp_access_watchpoint
:
7522 disable_breakpoint (bpt
);
7526 else if (strchr (args
, '.'))
7528 struct bp_location
*loc
= find_location_by_number (args
);
7531 check_duplicates (loc
->owner
);
7534 map_breakpoint_numbers (args
, disable_breakpoint
);
7538 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7540 int target_resources_ok
, other_type_used
;
7543 if (bpt
->type
== bp_hardware_breakpoint
)
7546 i
= hw_breakpoint_used_count ();
7547 target_resources_ok
=
7548 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7550 if (target_resources_ok
== 0)
7551 error (_("No hardware breakpoint support in the target."));
7552 else if (target_resources_ok
< 0)
7553 error (_("Hardware breakpoints used exceeds limit."));
7556 if (bpt
->type
== bp_watchpoint
||
7557 bpt
->type
== bp_hardware_watchpoint
||
7558 bpt
->type
== bp_read_watchpoint
||
7559 bpt
->type
== bp_access_watchpoint
)
7561 struct frame_id saved_frame_id
;
7563 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
7564 if (bpt
->exp_valid_block
!= NULL
)
7566 struct frame_info
*fr
=
7567 fr
= frame_find_by_id (bpt
->watchpoint_frame
);
7570 printf_filtered (_("\
7571 Cannot enable watchpoint %d because the block in which its expression\n\
7572 is valid is not currently in scope.\n"), bpt
->number
);
7579 value_free (bpt
->val
);
7580 mark
= value_mark ();
7581 bpt
->val
= evaluate_expression (bpt
->exp
);
7582 release_value (bpt
->val
);
7583 if (value_lazy (bpt
->val
))
7584 value_fetch_lazy (bpt
->val
);
7586 if (bpt
->type
== bp_hardware_watchpoint
||
7587 bpt
->type
== bp_read_watchpoint
||
7588 bpt
->type
== bp_access_watchpoint
)
7590 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7591 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7593 /* Hack around 'unused var' error for some targets here */
7594 (void) mem_cnt
, (void) i
;
7595 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7596 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7597 /* we can consider of type is bp_hardware_watchpoint, convert to
7598 bp_watchpoint in the following condition */
7599 if (target_resources_ok
< 0)
7601 printf_filtered (_("\
7602 Cannot enable watchpoint %d because target watch resources\n\
7603 have been allocated for other watchpoints.\n"), bpt
->number
);
7604 value_free_to_mark (mark
);
7609 select_frame (frame_find_by_id (saved_frame_id
));
7610 value_free_to_mark (mark
);
7613 if (bpt
->enable_state
!= bp_permanent
)
7614 bpt
->enable_state
= bp_enabled
;
7615 bpt
->disposition
= disposition
;
7616 check_duplicates (bpt
);
7617 breakpoints_changed ();
7619 if (deprecated_modify_breakpoint_hook
)
7620 deprecated_modify_breakpoint_hook (bpt
);
7621 breakpoint_modify_event (bpt
->number
);
7626 enable_breakpoint (struct breakpoint
*bpt
)
7628 do_enable_breakpoint (bpt
, bpt
->disposition
);
7631 /* The enable command enables the specified breakpoints (or all defined
7632 breakpoints) so they once again become (or continue to be) effective
7633 in stopping the inferior. */
7636 enable_command (char *args
, int from_tty
)
7638 struct breakpoint
*bpt
;
7640 ALL_BREAKPOINTS (bpt
)
7644 warning (_("attempted to enable apparently deleted breakpoint #%d?"),
7649 case bp_catch_unload
:
7651 case bp_catch_vfork
:
7653 case bp_hardware_breakpoint
:
7655 case bp_hardware_watchpoint
:
7656 case bp_read_watchpoint
:
7657 case bp_access_watchpoint
:
7658 enable_breakpoint (bpt
);
7662 else if (strchr (args
, '.'))
7664 struct bp_location
*loc
= find_location_by_number (args
);
7667 check_duplicates (loc
->owner
);
7670 map_breakpoint_numbers (args
, enable_breakpoint
);
7674 enable_once_breakpoint (struct breakpoint
*bpt
)
7676 do_enable_breakpoint (bpt
, disp_disable
);
7680 enable_once_command (char *args
, int from_tty
)
7682 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7686 enable_delete_breakpoint (struct breakpoint
*bpt
)
7688 do_enable_breakpoint (bpt
, disp_del
);
7692 enable_delete_command (char *args
, int from_tty
)
7694 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7698 set_breakpoint_cmd (char *args
, int from_tty
)
7703 show_breakpoint_cmd (char *args
, int from_tty
)
7707 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7709 struct symtabs_and_lines
7710 decode_line_spec_1 (char *string
, int funfirstline
)
7712 struct symtabs_and_lines sals
;
7714 error (_("Empty line specification."));
7715 if (default_breakpoint_valid
)
7716 sals
= decode_line_1 (&string
, funfirstline
,
7717 default_breakpoint_symtab
,
7718 default_breakpoint_line
,
7719 (char ***) NULL
, NULL
);
7721 sals
= decode_line_1 (&string
, funfirstline
,
7722 (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7724 error (_("Junk at end of line specification: %s"), string
);
7728 /* Create and insert a raw software breakpoint at PC. Return an
7729 identifier, which should be used to remove the breakpoint later.
7730 In general, places which call this should be using something on the
7731 breakpoint chain instead; this function should be eliminated
7735 deprecated_insert_raw_breakpoint (CORE_ADDR pc
)
7737 struct bp_target_info
*bp_tgt
;
7739 bp_tgt
= xmalloc (sizeof (struct bp_target_info
));
7740 memset (bp_tgt
, 0, sizeof (struct bp_target_info
));
7742 bp_tgt
->placed_address
= pc
;
7743 if (target_insert_breakpoint (bp_tgt
) != 0)
7745 /* Could not insert the breakpoint. */
7753 /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
7756 deprecated_remove_raw_breakpoint (void *bp
)
7758 struct bp_target_info
*bp_tgt
= bp
;
7761 ret
= target_remove_breakpoint (bp_tgt
);
7767 /* One (or perhaps two) breakpoints used for software single stepping. */
7769 static void *single_step_breakpoints
[2];
7771 /* Create and insert a breakpoint for software single step. */
7774 insert_single_step_breakpoint (CORE_ADDR next_pc
)
7778 if (single_step_breakpoints
[0] == NULL
)
7779 bpt_p
= &single_step_breakpoints
[0];
7782 gdb_assert (single_step_breakpoints
[1] == NULL
);
7783 bpt_p
= &single_step_breakpoints
[1];
7786 /* NOTE drow/2006-04-11: A future improvement to this function would be
7787 to only create the breakpoints once, and actually put them on the
7788 breakpoint chain. That would let us use set_raw_breakpoint. We could
7789 adjust the addresses each time they were needed. Doing this requires
7790 corresponding changes elsewhere where single step breakpoints are
7791 handled, however. So, for now, we use this. */
7793 *bpt_p
= deprecated_insert_raw_breakpoint (next_pc
);
7795 error (_("Could not insert single-step breakpoint at 0x%s"),
7796 paddr_nz (next_pc
));
7799 /* Remove and delete any breakpoints used for software single step. */
7802 remove_single_step_breakpoints (void)
7804 gdb_assert (single_step_breakpoints
[0] != NULL
);
7806 /* See insert_single_step_breakpoint for more about this deprecated
7808 deprecated_remove_raw_breakpoint (single_step_breakpoints
[0]);
7809 single_step_breakpoints
[0] = NULL
;
7811 if (single_step_breakpoints
[1] != NULL
)
7813 deprecated_remove_raw_breakpoint (single_step_breakpoints
[1]);
7814 single_step_breakpoints
[1] = NULL
;
7818 /* Check whether a software single-step breakpoint is inserted at PC. */
7821 single_step_breakpoint_inserted_here_p (CORE_ADDR pc
)
7825 for (i
= 0; i
< 2; i
++)
7827 struct bp_target_info
*bp_tgt
= single_step_breakpoints
[i
];
7828 if (bp_tgt
&& bp_tgt
->placed_address
== pc
)
7836 /* This help string is used for the break, hbreak, tbreak and thbreak commands.
7837 It is defined as a macro to prevent duplication.
7838 COMMAND should be a string constant containing the name of the command. */
7839 #define BREAK_ARGS_HELP(command) \
7840 command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\
7841 LOCATION may be a line number, function name, or \"*\" and an address.\n\
7842 If a line number is specified, break at start of code for that line.\n\
7843 If a function is specified, break at start of code for that function.\n\
7844 If an address is specified, break at that exact address.\n\
7845 With no LOCATION, uses current execution address of selected stack frame.\n\
7846 This is useful for breaking on return to a stack frame.\n\
7848 THREADNUM is the number from \"info threads\".\n\
7849 CONDITION is a boolean expression.\n\
7851 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7853 Do \"help breakpoints\" for info on other commands dealing with breakpoints."
7856 _initialize_breakpoint (void)
7858 static struct cmd_list_element
*breakpoint_set_cmdlist
;
7859 static struct cmd_list_element
*breakpoint_show_cmdlist
;
7860 struct cmd_list_element
*c
;
7862 observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib
);
7864 breakpoint_chain
= 0;
7865 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7866 before a breakpoint is set. */
7867 breakpoint_count
= 0;
7869 add_com ("ignore", class_breakpoint
, ignore_command
, _("\
7870 Set ignore-count of breakpoint number N to COUNT.\n\
7871 Usage is `ignore N COUNT'."));
7873 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7875 add_com ("commands", class_breakpoint
, commands_command
, _("\
7876 Set commands to be executed when a breakpoint is hit.\n\
7877 Give breakpoint number as argument after \"commands\".\n\
7878 With no argument, the targeted breakpoint is the last one set.\n\
7879 The commands themselves follow starting on the next line.\n\
7880 Type a line containing \"end\" to indicate the end of them.\n\
7881 Give \"silent\" as the first line to make the breakpoint silent;\n\
7882 then no output is printed when it is hit, except what the commands print."));
7884 add_com ("condition", class_breakpoint
, condition_command
, _("\
7885 Specify breakpoint number N to break only if COND is true.\n\
7886 Usage is `condition N COND', where N is an integer and COND is an\n\
7887 expression to be evaluated whenever breakpoint N is reached."));
7889 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
, _("\
7890 Set a temporary breakpoint.\n\
7891 Like \"break\" except the breakpoint is only temporary,\n\
7892 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7893 by using \"enable delete\" on the breakpoint number.\n\
7895 BREAK_ARGS_HELP ("tbreak")));
7896 set_cmd_completer (c
, location_completer
);
7898 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
, _("\
7899 Set a hardware assisted breakpoint.\n\
7900 Like \"break\" except the breakpoint requires hardware support,\n\
7901 some target hardware may not have this support.\n\
7903 BREAK_ARGS_HELP ("hbreak")));
7904 set_cmd_completer (c
, location_completer
);
7906 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
, _("\
7907 Set a temporary hardware assisted breakpoint.\n\
7908 Like \"hbreak\" except the breakpoint is only temporary,\n\
7909 so it will be deleted when hit.\n\
7911 BREAK_ARGS_HELP ("thbreak")));
7912 set_cmd_completer (c
, location_completer
);
7914 add_prefix_cmd ("enable", class_breakpoint
, enable_command
, _("\
7915 Enable some breakpoints.\n\
7916 Give breakpoint numbers (separated by spaces) as arguments.\n\
7917 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7918 This is used to cancel the effect of the \"disable\" command.\n\
7919 With a subcommand you can enable temporarily."),
7920 &enablelist
, "enable ", 1, &cmdlist
);
7922 add_com ("ab", class_breakpoint
, enable_command
, _("\
7923 Enable some breakpoints.\n\
7924 Give breakpoint numbers (separated by spaces) as arguments.\n\
7925 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7926 This is used to cancel the effect of the \"disable\" command.\n\
7927 With a subcommand you can enable temporarily."));
7929 add_com_alias ("en", "enable", class_breakpoint
, 1);
7931 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
, _("\
7932 Enable some breakpoints.\n\
7933 Give breakpoint numbers (separated by spaces) as arguments.\n\
7934 This is used to cancel the effect of the \"disable\" command.\n\
7935 May be abbreviated to simply \"enable\".\n"),
7936 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7938 add_cmd ("once", no_class
, enable_once_command
, _("\
7939 Enable breakpoints for one hit. Give breakpoint numbers.\n\
7940 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
7943 add_cmd ("delete", no_class
, enable_delete_command
, _("\
7944 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7945 If a breakpoint is hit while enabled in this fashion, it is deleted."),
7948 add_cmd ("delete", no_class
, enable_delete_command
, _("\
7949 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7950 If a breakpoint is hit while enabled in this fashion, it is deleted."),
7953 add_cmd ("once", no_class
, enable_once_command
, _("\
7954 Enable breakpoints for one hit. Give breakpoint numbers.\n\
7955 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
7958 add_prefix_cmd ("disable", class_breakpoint
, disable_command
, _("\
7959 Disable some breakpoints.\n\
7960 Arguments are breakpoint numbers with spaces in between.\n\
7961 To disable all breakpoints, give no argument.\n\
7962 A disabled breakpoint is not forgotten, but has no effect until reenabled."),
7963 &disablelist
, "disable ", 1, &cmdlist
);
7964 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7965 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7967 add_com ("sb", class_breakpoint
, disable_command
, _("\
7968 Disable some breakpoints.\n\
7969 Arguments are breakpoint numbers with spaces in between.\n\
7970 To disable all breakpoints, give no argument.\n\
7971 A disabled breakpoint is not forgotten, but has no effect until reenabled."));
7973 add_cmd ("breakpoints", class_alias
, disable_command
, _("\
7974 Disable some breakpoints.\n\
7975 Arguments are breakpoint numbers with spaces in between.\n\
7976 To disable all breakpoints, give no argument.\n\
7977 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7978 This command may be abbreviated \"disable\"."),
7981 add_prefix_cmd ("delete", class_breakpoint
, delete_command
, _("\
7982 Delete some breakpoints or auto-display expressions.\n\
7983 Arguments are breakpoint numbers with spaces in between.\n\
7984 To delete all breakpoints, give no argument.\n\
7986 Also a prefix command for deletion of other GDB objects.\n\
7987 The \"unset\" command is also an alias for \"delete\"."),
7988 &deletelist
, "delete ", 1, &cmdlist
);
7989 add_com_alias ("d", "delete", class_breakpoint
, 1);
7990 add_com_alias ("del", "delete", class_breakpoint
, 1);
7992 add_com ("db", class_breakpoint
, delete_command
, _("\
7993 Delete some breakpoints.\n\
7994 Arguments are breakpoint numbers with spaces in between.\n\
7995 To delete all breakpoints, give no argument.\n"));
7997 add_cmd ("breakpoints", class_alias
, delete_command
, _("\
7998 Delete some breakpoints or auto-display expressions.\n\
7999 Arguments are breakpoint numbers with spaces in between.\n\
8000 To delete all breakpoints, give no argument.\n\
8001 This command may be abbreviated \"delete\"."),
8004 add_com ("clear", class_breakpoint
, clear_command
, _("\
8005 Clear breakpoint at specified line or function.\n\
8006 Argument may be line number, function name, or \"*\" and an address.\n\
8007 If line number is specified, all breakpoints in that line are cleared.\n\
8008 If function is specified, breakpoints at beginning of function are cleared.\n\
8009 If an address is specified, breakpoints at that address are cleared.\n\
8011 With no argument, clears all breakpoints in the line that the selected frame\n\
8014 See also the \"delete\" command which clears breakpoints by number."));
8016 c
= add_com ("break", class_breakpoint
, break_command
, _("\
8017 Set breakpoint at specified line or function.\n"
8018 BREAK_ARGS_HELP ("break")));
8019 set_cmd_completer (c
, location_completer
);
8021 add_com_alias ("b", "break", class_run
, 1);
8022 add_com_alias ("br", "break", class_run
, 1);
8023 add_com_alias ("bre", "break", class_run
, 1);
8024 add_com_alias ("brea", "break", class_run
, 1);
8028 add_com_alias ("ba", "break", class_breakpoint
, 1);
8029 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
8034 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
, _("\
8035 Break in function/address or break at a line in the current file."),
8036 &stoplist
, "stop ", 1, &cmdlist
);
8037 add_cmd ("in", class_breakpoint
, stopin_command
,
8038 _("Break in function or address."), &stoplist
);
8039 add_cmd ("at", class_breakpoint
, stopat_command
,
8040 _("Break at a line in the current file."), &stoplist
);
8041 add_com ("status", class_info
, breakpoints_info
, _("\
8042 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8043 The \"Type\" column indicates one of:\n\
8044 \tbreakpoint - normal breakpoint\n\
8045 \twatchpoint - watchpoint\n\
8046 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8047 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8048 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8049 address and file/line number respectively.\n\
8051 Convenience variable \"$_\" and default examine address for \"x\"\n\
8052 are set to the address of the last breakpoint listed unless the command\n\
8053 is prefixed with \"server \".\n\n\
8054 Convenience variable \"$bpnum\" contains the number of the last\n\
8058 add_info ("breakpoints", breakpoints_info
, _("\
8059 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8060 The \"Type\" column indicates one of:\n\
8061 \tbreakpoint - normal breakpoint\n\
8062 \twatchpoint - watchpoint\n\
8063 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8064 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8065 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8066 address and file/line number respectively.\n\
8068 Convenience variable \"$_\" and default examine address for \"x\"\n\
8069 are set to the address of the last breakpoint listed unless the command\n\
8070 is prefixed with \"server \".\n\n\
8071 Convenience variable \"$bpnum\" contains the number of the last\n\
8075 add_com ("lb", class_breakpoint
, breakpoints_info
, _("\
8076 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8077 The \"Type\" column indicates one of:\n\
8078 \tbreakpoint - normal breakpoint\n\
8079 \twatchpoint - watchpoint\n\
8080 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8081 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8082 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8083 address and file/line number respectively.\n\
8085 Convenience variable \"$_\" and default examine address for \"x\"\n\
8086 are set to the address of the last breakpoint listed unless the command\n\
8087 is prefixed with \"server \".\n\n\
8088 Convenience variable \"$bpnum\" contains the number of the last\n\
8091 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
, _("\
8092 Status of all breakpoints, or breakpoint number NUMBER.\n\
8093 The \"Type\" column indicates one of:\n\
8094 \tbreakpoint - normal breakpoint\n\
8095 \twatchpoint - watchpoint\n\
8096 \tlongjmp - internal breakpoint used to step through longjmp()\n\
8097 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
8098 \tuntil - internal breakpoint used by the \"until\" command\n\
8099 \tfinish - internal breakpoint used by the \"finish\" command\n\
8100 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8101 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8102 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8103 address and file/line number respectively.\n\
8105 Convenience variable \"$_\" and default examine address for \"x\"\n\
8106 are set to the address of the last breakpoint listed unless the command\n\
8107 is prefixed with \"server \".\n\n\
8108 Convenience variable \"$bpnum\" contains the number of the last\n\
8110 &maintenanceinfolist
);
8112 add_com ("catch", class_breakpoint
, catch_command
, _("\
8113 Set catchpoints to catch events.\n\
8114 Raised signals may be caught:\n\
8115 \tcatch signal - all signals\n\
8116 \tcatch signal <signame> - a particular signal\n\
8117 Raised exceptions may be caught:\n\
8118 \tcatch throw - all exceptions, when thrown\n\
8119 \tcatch throw <exceptname> - a particular exception, when thrown\n\
8120 \tcatch catch - all exceptions, when caught\n\
8121 \tcatch catch <exceptname> - a particular exception, when caught\n\
8122 Thread or process events may be caught:\n\
8123 \tcatch thread_start - any threads, just after creation\n\
8124 \tcatch thread_exit - any threads, just before expiration\n\
8125 \tcatch thread_join - any threads, just after joins\n\
8126 Process events may be caught:\n\
8127 \tcatch start - any processes, just after creation\n\
8128 \tcatch exit - any processes, just before expiration\n\
8129 \tcatch fork - calls to fork()\n\
8130 \tcatch vfork - calls to vfork()\n\
8131 \tcatch exec - calls to exec()\n\
8132 Dynamically-linked library events may be caught:\n\
8133 \tcatch load - loads of any library\n\
8134 \tcatch load <libname> - loads of a particular library\n\
8135 \tcatch unload - unloads of any library\n\
8136 \tcatch unload <libname> - unloads of a particular library\n\
8137 The act of your program's execution stopping may also be caught:\n\
8139 C++ exceptions may be caught:\n\
8140 \tcatch throw - all exceptions, when thrown\n\
8141 \tcatch catch - all exceptions, when caught\n\
8142 Ada exceptions may be caught:\n\
8143 \tcatch exception - all exceptions, when raised\n\
8144 \tcatch exception <name> - a particular exception, when raised\n\
8145 \tcatch exception unhandled - all unhandled exceptions, when raised\n\
8146 \tcatch assert - all failed assertions, when raised\n\
8148 Do \"help set follow-fork-mode\" for info on debugging your program\n\
8149 after a fork or vfork is caught.\n\n\
8150 Do \"help breakpoints\" for info on other commands dealing with breakpoints."));
8152 add_com ("tcatch", class_breakpoint
, tcatch_command
, _("\
8153 Set temporary catchpoints to catch events.\n\
8154 Args like \"catch\" command.\n\
8155 Like \"catch\" except the catchpoint is only temporary,\n\
8156 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
8157 by using \"enable delete\" on the catchpoint number."));
8159 c
= add_com ("watch", class_breakpoint
, watch_command
, _("\
8160 Set a watchpoint for an expression.\n\
8161 A watchpoint stops execution of your program whenever the value of\n\
8162 an expression changes."));
8163 set_cmd_completer (c
, location_completer
);
8165 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
, _("\
8166 Set a read watchpoint for an expression.\n\
8167 A watchpoint stops execution of your program whenever the value of\n\
8168 an expression is read."));
8169 set_cmd_completer (c
, location_completer
);
8171 c
= add_com ("awatch", class_breakpoint
, awatch_command
, _("\
8172 Set a watchpoint for an expression.\n\
8173 A watchpoint stops execution of your program whenever the value of\n\
8174 an expression is either read or written."));
8175 set_cmd_completer (c
, location_completer
);
8177 add_info ("watchpoints", breakpoints_info
,
8178 _("Synonym for ``info breakpoints''."));
8181 /* XXX: cagney/2005-02-23: This should be a boolean, and should
8182 respond to changes - contrary to the description. */
8183 add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support
,
8184 &can_use_hw_watchpoints
, _("\
8185 Set debugger's willingness to use watchpoint hardware."), _("\
8186 Show debugger's willingness to use watchpoint hardware."), _("\
8187 If zero, gdb will not use hardware for new watchpoints, even if\n\
8188 such is available. (However, any hardware watchpoints that were\n\
8189 created before setting this to nonzero, will continue to use watchpoint\n\
8192 show_can_use_hw_watchpoints
,
8193 &setlist
, &showlist
);
8195 can_use_hw_watchpoints
= 1;
8197 add_prefix_cmd ("breakpoint", class_maintenance
, set_breakpoint_cmd
, _("\
8198 Breakpoint specific settings\n\
8199 Configure various breakpoint-specific variables such as\n\
8200 pending breakpoint behavior"),
8201 &breakpoint_set_cmdlist
, "set breakpoint ",
8202 0/*allow-unknown*/, &setlist
);
8203 add_prefix_cmd ("breakpoint", class_maintenance
, show_breakpoint_cmd
, _("\
8204 Breakpoint specific settings\n\
8205 Configure various breakpoint-specific variables such as\n\
8206 pending breakpoint behavior"),
8207 &breakpoint_show_cmdlist
, "show breakpoint ",
8208 0/*allow-unknown*/, &showlist
);
8210 add_setshow_auto_boolean_cmd ("pending", no_class
,
8211 &pending_break_support
, _("\
8212 Set debugger's behavior regarding pending breakpoints."), _("\
8213 Show debugger's behavior regarding pending breakpoints."), _("\
8214 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8215 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8216 an error. If auto, an unrecognized breakpoint location results in a\n\
8217 user-query to see if a pending breakpoint should be created."),
8219 show_pending_break_support
,
8220 &breakpoint_set_cmdlist
,
8221 &breakpoint_show_cmdlist
);
8223 pending_break_support
= AUTO_BOOLEAN_AUTO
;
8225 add_setshow_boolean_cmd ("auto-hw", no_class
,
8226 &automatic_hardware_breakpoints
, _("\
8227 Set automatic usage of hardware breakpoints."), _("\
8228 Show automatic usage of hardware breakpoints."), _("\
8229 If set, the debugger will automatically use hardware breakpoints for\n\
8230 breakpoints set with \"break\" but falling in read-only memory. If not set,\n\
8231 a warning will be emitted for such breakpoints."),
8233 show_automatic_hardware_breakpoints
,
8234 &breakpoint_set_cmdlist
,
8235 &breakpoint_show_cmdlist
);
8237 automatic_hardware_breakpoints
= 1;