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 /* Root of the chain of bpstat's */
2614 struct bpstats root_bs
[1];
2615 /* Pointer to the last thing in the chain currently. */
2616 bpstat bs
= root_bs
;
2617 int thread_id
= pid_to_thread_id (ptid
);
2619 ALL_BP_LOCATIONS (bl
)
2623 if (!breakpoint_enabled (b
) && b
->enable_state
!= bp_permanent
)
2626 if (b
->type
!= bp_watchpoint
2627 && b
->type
!= bp_hardware_watchpoint
2628 && b
->type
!= bp_read_watchpoint
2629 && b
->type
!= bp_access_watchpoint
2630 && b
->type
!= bp_hardware_breakpoint
2631 && b
->type
!= bp_catch_fork
2632 && b
->type
!= bp_catch_vfork
2633 && b
->type
!= bp_catch_exec
) /* a non-watchpoint bp */
2635 if (bl
->address
!= bp_addr
) /* address doesn't match */
2637 if (overlay_debugging
/* unmapped overlay section */
2638 && section_is_overlay (bl
->section
)
2639 && !section_is_mapped (bl
->section
))
2643 /* Continuable hardware watchpoints are treated as non-existent if the
2644 reason we stopped wasn't a hardware watchpoint (we didn't stop on
2645 some data address). Otherwise gdb won't stop on a break instruction
2646 in the code (not from a breakpoint) when a hardware watchpoint has
2647 been defined. Also skip watchpoints which we know did not trigger
2648 (did not match the data address). */
2650 if ((b
->type
== bp_hardware_watchpoint
2651 || b
->type
== bp_read_watchpoint
2652 || b
->type
== bp_access_watchpoint
)
2653 && b
->watchpoint_triggered
== watch_triggered_no
)
2656 if (b
->type
== bp_hardware_breakpoint
)
2658 if (bl
->address
!= bp_addr
)
2660 if (overlay_debugging
/* unmapped overlay section */
2661 && section_is_overlay (bl
->section
)
2662 && !section_is_mapped (bl
->section
))
2666 /* Is this a catchpoint of a load or unload? If so, did we
2667 get a load or unload of the specified library? If not,
2669 if ((b
->type
== bp_catch_load
)
2670 #if defined(SOLIB_HAVE_LOAD_EVENT)
2671 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2672 || ((b
->dll_pathname
!= NULL
)
2673 && (strcmp (b
->dll_pathname
,
2674 SOLIB_LOADED_LIBRARY_PATHNAME (
2675 PIDGET (inferior_ptid
)))
2681 if ((b
->type
== bp_catch_unload
)
2682 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2683 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2684 || ((b
->dll_pathname
!= NULL
)
2685 && (strcmp (b
->dll_pathname
,
2686 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2687 PIDGET (inferior_ptid
)))
2693 if ((b
->type
== bp_catch_fork
)
2694 && !inferior_has_forked (PIDGET (inferior_ptid
),
2695 &b
->forked_inferior_pid
))
2698 if ((b
->type
== bp_catch_vfork
)
2699 && !inferior_has_vforked (PIDGET (inferior_ptid
),
2700 &b
->forked_inferior_pid
))
2703 if ((b
->type
== bp_catch_exec
)
2704 && !inferior_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2707 /* Come here if it's a watchpoint, or if the break address matches */
2709 bs
= bpstat_alloc (bl
, bs
); /* Alloc a bpstat to explain stop */
2711 /* Watchpoints may change this, if not found to have triggered. */
2715 if (b
->type
== bp_watchpoint
2716 || b
->type
== bp_read_watchpoint
2717 || b
->type
== bp_access_watchpoint
2718 || b
->type
== bp_hardware_watchpoint
)
2722 int must_check_value
= 0;
2724 if (b
->type
== bp_watchpoint
)
2725 /* For a software watchpoint, we must always check the
2727 must_check_value
= 1;
2728 else if (b
->watchpoint_triggered
== watch_triggered_yes
)
2729 /* We have a hardware watchpoint (read, write, or access)
2730 and the target earlier reported an address watched by
2732 must_check_value
= 1;
2733 else if (b
->watchpoint_triggered
== watch_triggered_unknown
2734 && b
->type
== bp_hardware_watchpoint
)
2735 /* We were stopped by a hardware watchpoint, but the target could
2736 not report the data address. We must check the watchpoint's
2737 value. Access and read watchpoints are out of luck; without
2738 a data address, we can't figure it out. */
2739 must_check_value
= 1;
2741 if (must_check_value
)
2743 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2745 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2746 int e
= catch_errors (watchpoint_check
, bs
, message
,
2748 do_cleanups (cleanups
);
2752 /* We've already printed what needs to be printed. */
2753 bs
->print_it
= print_it_done
;
2756 case WP_VALUE_CHANGED
:
2757 if (b
->type
== bp_read_watchpoint
)
2759 /* Don't stop: read watchpoints shouldn't fire if
2760 the value has changed. This is for targets
2761 which cannot set read-only watchpoints. */
2762 bs
->print_it
= print_it_noop
;
2768 case WP_VALUE_NOT_CHANGED
:
2769 if (b
->type
== bp_hardware_watchpoint
2770 || b
->type
== bp_watchpoint
)
2772 /* Don't stop: write watchpoints shouldn't fire if
2773 the value hasn't changed. */
2774 bs
->print_it
= print_it_noop
;
2784 /* Error from catch_errors. */
2785 printf_filtered (_("Watchpoint %d deleted.\n"), b
->number
);
2786 if (b
->related_breakpoint
)
2787 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2788 b
->disposition
= disp_del_at_next_stop
;
2789 /* We've already printed what needs to be printed. */
2790 bs
->print_it
= print_it_done
;
2794 else /* must_check_value == 0 */
2796 /* This is a case where some watchpoint(s) triggered, but
2797 not at the address of this watchpoint, or else no
2798 watchpoint triggered after all. So don't print
2799 anything for this watchpoint. */
2800 bs
->print_it
= print_it_noop
;
2807 /* By definition, an encountered breakpoint is a triggered
2812 if (frame_id_p (b
->frame_id
)
2813 && !frame_id_eq (b
->frame_id
, get_frame_id (get_current_frame ())))
2817 int value_is_zero
= 0;
2819 /* If this is a scope breakpoint, mark the associated
2820 watchpoint as triggered so that we will handle the
2821 out-of-scope event. We'll get to the watchpoint next
2823 if (b
->type
== bp_watchpoint_scope
)
2824 b
->related_breakpoint
->watchpoint_triggered
= watch_triggered_yes
;
2828 /* Need to select the frame, with all that implies
2829 so that the conditions will have the right context. */
2830 select_frame (get_current_frame ());
2832 = catch_errors (breakpoint_cond_eval
, (bl
->cond
),
2833 "Error in testing breakpoint condition:\n",
2835 /* FIXME-someday, should give breakpoint # */
2838 if (bl
->cond
&& value_is_zero
)
2841 /* Don't consider this a hit. */
2844 else if (b
->thread
!= -1 && b
->thread
!= thread_id
)
2847 /* Don't consider this a hit. */
2850 else if (b
->ignore_count
> 0)
2853 annotate_ignore_count_change ();
2856 else if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
2857 /* We do not stop for these. */
2861 /* We will stop here */
2862 if (b
->disposition
== disp_disable
)
2863 b
->enable_state
= bp_disabled
;
2866 bs
->commands
= b
->commands
;
2868 (strcmp ("silent", bs
->commands
->line
) == 0
2869 || (xdb_commands
&& strcmp ("Q", bs
->commands
->line
) == 0)))
2871 bs
->commands
= bs
->commands
->next
;
2874 bs
->commands
= copy_command_lines (bs
->commands
);
2877 /* Print nothing for this entry if we dont stop or if we dont print. */
2878 if (bs
->stop
== 0 || bs
->print
== 0)
2879 bs
->print_it
= print_it_noop
;
2882 bs
->next
= NULL
; /* Terminate the chain */
2883 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2885 /* If we aren't stopping, the value of some hardware watchpoint may
2886 not have changed, but the intermediate memory locations we are
2887 watching may have. Don't bother if we're stopping; this will get
2889 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2894 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2896 && (bs
->breakpoint_at
->owner
->type
== bp_hardware_watchpoint
2897 || bs
->breakpoint_at
->owner
->type
== bp_read_watchpoint
2898 || bs
->breakpoint_at
->owner
->type
== bp_access_watchpoint
))
2900 remove_breakpoints ();
2901 insert_breakpoints ();
2905 return root_bs
->next
;
2908 /* Tell what to do about this bpstat. */
2910 bpstat_what (bpstat bs
)
2912 /* Classify each bpstat as one of the following. */
2915 /* This bpstat element has no effect on the main_action. */
2918 /* There was a watchpoint, stop but don't print. */
2921 /* There was a watchpoint, stop and print. */
2924 /* There was a breakpoint but we're not stopping. */
2927 /* There was a breakpoint, stop but don't print. */
2930 /* There was a breakpoint, stop and print. */
2933 /* We hit the longjmp breakpoint. */
2936 /* We hit the longjmp_resume breakpoint. */
2939 /* We hit the step_resume breakpoint. */
2942 /* We hit the shared library event breakpoint. */
2945 /* We caught a shared library event. */
2948 /* This is just used to count how many enums there are. */
2952 /* Here is the table which drives this routine. So that we can
2953 format it pretty, we define some abbreviations for the
2954 enum bpstat_what codes. */
2955 #define kc BPSTAT_WHAT_KEEP_CHECKING
2956 #define ss BPSTAT_WHAT_STOP_SILENT
2957 #define sn BPSTAT_WHAT_STOP_NOISY
2958 #define sgl BPSTAT_WHAT_SINGLE
2959 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2960 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2961 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2962 #define sr BPSTAT_WHAT_STEP_RESUME
2963 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2964 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2966 /* "Can't happen." Might want to print an error message.
2967 abort() is not out of the question, but chances are GDB is just
2968 a bit confused, not unusable. */
2969 #define err BPSTAT_WHAT_STOP_NOISY
2971 /* Given an old action and a class, come up with a new action. */
2972 /* One interesting property of this table is that wp_silent is the same
2973 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2974 after stopping, the check for whether to step over a breakpoint
2975 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2976 reference to how we stopped. We retain separate wp_silent and
2977 bp_silent codes in case we want to change that someday.
2979 Another possibly interesting property of this table is that
2980 there's a partial ordering, priority-like, of the actions. Once
2981 you've decided that some action is appropriate, you'll never go
2982 back and decide something of a lower priority is better. The
2985 kc < clr sgl shl shlr slr sn sr ss
2986 sgl < clrs shl shlr slr sn sr ss
2987 slr < err shl shlr sn sr ss
2988 clr < clrs err shl shlr sn sr ss
2989 clrs < err shl shlr sn sr ss
2996 What I think this means is that we don't need a damned table
2997 here. If you just put the rows and columns in the right order,
2998 it'd look awfully regular. We could simply walk the bpstat list
2999 and choose the highest priority action we find, with a little
3000 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
3001 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
3002 is messy anyway). */
3004 /* step_resume entries: a step resume breakpoint overrides another
3005 breakpoint of signal handling (see comment in wait_for_inferior
3006 at where we set the step_resume breakpoint). */
3008 static const enum bpstat_what_main_action
3009 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
3012 /* kc ss sn sgl slr clr clrs sr shl shlr
3015 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, shl
, shlr
},
3017 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3019 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3021 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, shl
, shlr
},
3023 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3025 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3027 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, shl
, shlr
},
3029 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, shl
, shlr
},
3031 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
},
3033 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, sr
, shl
, shlr
},
3035 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, sr
, shlr
, shlr
}
3050 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
3051 struct bpstat_what retval
;
3053 retval
.call_dummy
= 0;
3054 for (; bs
!= NULL
; bs
= bs
->next
)
3056 enum class bs_class
= no_effect
;
3057 if (bs
->breakpoint_at
== NULL
)
3058 /* I suspect this can happen if it was a momentary breakpoint
3059 which has since been deleted. */
3061 switch (bs
->breakpoint_at
->owner
->type
)
3067 case bp_hardware_breakpoint
:
3073 bs_class
= bp_noisy
;
3075 bs_class
= bp_silent
;
3078 bs_class
= bp_nostop
;
3081 case bp_hardware_watchpoint
:
3082 case bp_read_watchpoint
:
3083 case bp_access_watchpoint
:
3087 bs_class
= wp_noisy
;
3089 bs_class
= wp_silent
;
3092 /* There was a watchpoint, but we're not stopping.
3093 This requires no further action. */
3094 bs_class
= no_effect
;
3097 bs_class
= long_jump
;
3099 case bp_longjmp_resume
:
3100 bs_class
= long_resume
;
3102 case bp_step_resume
:
3105 bs_class
= step_resume
;
3108 /* It is for the wrong frame. */
3109 bs_class
= bp_nostop
;
3111 case bp_watchpoint_scope
:
3112 bs_class
= bp_nostop
;
3114 case bp_shlib_event
:
3115 bs_class
= shlib_event
;
3117 case bp_thread_event
:
3118 case bp_overlay_event
:
3119 bs_class
= bp_nostop
;
3122 case bp_catch_unload
:
3123 /* Only if this catchpoint triggered should we cause the
3124 step-out-of-dld behaviour. Otherwise, we ignore this
3127 bs_class
= catch_shlib_event
;
3129 bs_class
= no_effect
;
3132 case bp_catch_vfork
:
3137 bs_class
= bp_noisy
;
3139 bs_class
= bp_silent
;
3142 /* There was a catchpoint, but we're not stopping.
3143 This requires no further action. */
3144 bs_class
= no_effect
;
3147 /* Make sure the action is stop (silent or noisy),
3148 so infrun.c pops the dummy frame. */
3149 bs_class
= bp_silent
;
3150 retval
.call_dummy
= 1;
3153 current_action
= table
[(int) bs_class
][(int) current_action
];
3155 retval
.main_action
= current_action
;
3159 /* Nonzero if we should step constantly (e.g. watchpoints on machines
3160 without hardware support). This isn't related to a specific bpstat,
3161 just to things like whether watchpoints are set. */
3164 bpstat_should_step (void)
3166 struct breakpoint
*b
;
3168 if (breakpoint_enabled (b
) && b
->type
== bp_watchpoint
)
3175 /* Given a bpstat that records zero or more triggered eventpoints, this
3176 function returns another bpstat which contains only the catchpoints
3177 on that first list, if any. */
3179 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3181 struct bpstats root_bs
[1];
3182 bpstat bs
= root_bs
;
3183 struct breakpoint
*ep
;
3186 bpstat_clear (cp_list
);
3187 root_bs
->next
= NULL
;
3189 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3191 /* Is this eventpoint a catchpoint? If not, ignore it. */
3192 ep
= ep_list
->breakpoint_at
->owner
;
3195 if ((ep
->type
!= bp_catch_load
) &&
3196 (ep
->type
!= bp_catch_unload
))
3197 /* pai: (temp) ADD fork/vfork here!! */
3200 /* Yes; add it to the list. */
3201 bs
= bpstat_alloc (ep_list
->breakpoint_at
, bs
);
3206 #if defined(SOLIB_ADD)
3207 /* Also, for each triggered catchpoint, tag it with the name of
3208 the library that caused this trigger. (We copy the name now,
3209 because it's only guaranteed to be available NOW, when the
3210 catchpoint triggers. Clients who may wish to know the name
3211 later must get it from the catchpoint itself.) */
3212 if (ep
->triggered_dll_pathname
!= NULL
)
3213 xfree (ep
->triggered_dll_pathname
);
3214 if (ep
->type
== bp_catch_load
)
3215 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3216 PIDGET (inferior_ptid
));
3218 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3219 PIDGET (inferior_ptid
));
3221 dll_pathname
= NULL
;
3225 ep
->triggered_dll_pathname
= (char *)
3226 xmalloc (strlen (dll_pathname
) + 1);
3227 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3230 ep
->triggered_dll_pathname
= NULL
;
3236 static void print_breakpoint_location (struct breakpoint
*b
,
3237 struct bp_location
*loc
,
3239 struct ui_stream
*stb
)
3244 = find_pc_sect_function (loc
->address
, loc
->section
);
3247 ui_out_text (uiout
, "in ");
3248 ui_out_field_string (uiout
, "func",
3249 SYMBOL_PRINT_NAME (sym
));
3250 ui_out_wrap_hint (uiout
, wrap_indent
);
3251 ui_out_text (uiout
, " at ");
3253 ui_out_field_string (uiout
, "file", b
->source_file
);
3254 ui_out_text (uiout
, ":");
3256 if (ui_out_is_mi_like_p (uiout
))
3258 struct symtab_and_line sal
= find_pc_line (loc
->address
, 0);
3259 char *fullname
= symtab_to_fullname (sal
.symtab
);
3262 ui_out_field_string (uiout
, "fullname", fullname
);
3265 ui_out_field_int (uiout
, "line", b
->line_number
);
3269 ui_out_field_string (uiout
, "pending", b
->addr_string
);
3273 print_address_symbolic (loc
->address
, stb
->stream
, demangle
, "");
3274 ui_out_field_stream (uiout
, "at", stb
);
3278 /* Print B to gdb_stdout. */
3280 print_one_breakpoint_location (struct breakpoint
*b
,
3281 struct bp_location
*loc
,
3283 CORE_ADDR
*last_addr
)
3285 struct command_line
*l
;
3287 struct ep_type_description
3292 static struct ep_type_description bptypes
[] =
3294 {bp_none
, "?deleted?"},
3295 {bp_breakpoint
, "breakpoint"},
3296 {bp_hardware_breakpoint
, "hw breakpoint"},
3297 {bp_until
, "until"},
3298 {bp_finish
, "finish"},
3299 {bp_watchpoint
, "watchpoint"},
3300 {bp_hardware_watchpoint
, "hw watchpoint"},
3301 {bp_read_watchpoint
, "read watchpoint"},
3302 {bp_access_watchpoint
, "acc watchpoint"},
3303 {bp_longjmp
, "longjmp"},
3304 {bp_longjmp_resume
, "longjmp resume"},
3305 {bp_step_resume
, "step resume"},
3306 {bp_watchpoint_scope
, "watchpoint scope"},
3307 {bp_call_dummy
, "call dummy"},
3308 {bp_shlib_event
, "shlib events"},
3309 {bp_thread_event
, "thread events"},
3310 {bp_overlay_event
, "overlay events"},
3311 {bp_catch_load
, "catch load"},
3312 {bp_catch_unload
, "catch unload"},
3313 {bp_catch_fork
, "catch fork"},
3314 {bp_catch_vfork
, "catch vfork"},
3315 {bp_catch_exec
, "catch exec"}
3318 static char *bpdisps
[] =
3319 {"del", "dstp", "dis", "keep"};
3320 static char bpenables
[] = "nynny";
3321 char wrap_indent
[80];
3322 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3323 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3324 struct cleanup
*bkpt_chain
;
3326 int header_of_multiple
= 0;
3327 int part_of_multiple
= (loc
!= NULL
);
3329 gdb_assert (!loc
|| loc_number
!= 0);
3330 /* See comment in print_one_breakpoint concerning
3331 treatment of breakpoints with single disabled
3335 && (b
->loc
->next
!= NULL
|| !b
->loc
->enabled
)))
3336 header_of_multiple
= 1;
3341 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "bkpt");
3345 if (part_of_multiple
)
3348 formatted
= xstrprintf ("%d.%d", b
->number
, loc_number
);
3349 ui_out_field_string (uiout
, "number", formatted
);
3354 ui_out_field_int (uiout
, "number", b
->number
);
3359 if (part_of_multiple
)
3360 ui_out_field_skip (uiout
, "type");
3363 if (((int) b
->type
>= (sizeof (bptypes
) / sizeof (bptypes
[0])))
3364 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3365 internal_error (__FILE__
, __LINE__
,
3366 _("bptypes table does not describe type #%d."),
3368 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3373 if (part_of_multiple
)
3374 ui_out_field_skip (uiout
, "disp");
3376 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3381 if (part_of_multiple
)
3382 ui_out_field_string (uiout
, "enabled",
3384 ? (loc
->enabled
? "y(p)" : "n(p)")
3385 : (loc
->enabled
? "y" : "n"));
3388 int pending
= (b
->loc
== NULL
|| b
->loc
->shlib_disabled
);
3389 /* For header of multiple, there's no point showing pending
3390 state -- it will be apparent from the locations. */
3391 if (header_of_multiple
)
3393 ui_out_field_fmt (uiout
, "enabled", "%c%s",
3394 bpenables
[(int) b
->enable_state
],
3395 pending
? "(p)" : "");
3397 ui_out_spaces (uiout
, 3);
3402 strcpy (wrap_indent
, " ");
3405 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3406 strcat (wrap_indent
, " ");
3408 strcat (wrap_indent
, " ");
3411 if (b
->ops
!= NULL
&& b
->ops
->print_one
!= NULL
)
3413 /* Although the print_one can possibly print
3414 all locations, calling it here is not likely
3415 to get any nice result. So, make sure there's
3416 just one location. */
3417 gdb_assert (b
->loc
== NULL
|| b
->loc
->next
== NULL
);
3418 b
->ops
->print_one (b
, last_addr
);
3424 internal_error (__FILE__
, __LINE__
,
3425 _("print_one_breakpoint: bp_none encountered\n"));
3429 case bp_hardware_watchpoint
:
3430 case bp_read_watchpoint
:
3431 case bp_access_watchpoint
:
3432 /* Field 4, the address, is omitted (which makes the columns
3433 not line up too nicely with the headers, but the effect
3434 is relatively readable). */
3436 ui_out_field_skip (uiout
, "addr");
3438 print_expression (b
->exp
, stb
->stream
);
3439 ui_out_field_stream (uiout
, "what", stb
);
3443 case bp_catch_unload
:
3444 /* Field 4, the address, is omitted (which makes the columns
3445 not line up too nicely with the headers, but the effect
3446 is relatively readable). */
3448 ui_out_field_skip (uiout
, "addr");
3450 if (b
->dll_pathname
== NULL
)
3452 ui_out_field_string (uiout
, "what", "<any library>");
3453 ui_out_spaces (uiout
, 1);
3457 ui_out_text (uiout
, "library \"");
3458 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3459 ui_out_text (uiout
, "\" ");
3464 case bp_catch_vfork
:
3465 /* Field 4, the address, is omitted (which makes the columns
3466 not line up too nicely with the headers, but the effect
3467 is relatively readable). */
3469 ui_out_field_skip (uiout
, "addr");
3471 if (b
->forked_inferior_pid
!= 0)
3473 ui_out_text (uiout
, "process ");
3474 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3475 ui_out_spaces (uiout
, 1);
3480 /* Field 4, the address, is omitted (which makes the columns
3481 not line up too nicely with the headers, but the effect
3482 is relatively readable). */
3484 ui_out_field_skip (uiout
, "addr");
3486 if (b
->exec_pathname
!= NULL
)
3488 ui_out_text (uiout
, "program \"");
3489 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3490 ui_out_text (uiout
, "\" ");
3495 case bp_hardware_breakpoint
:
3499 case bp_longjmp_resume
:
3500 case bp_step_resume
:
3501 case bp_watchpoint_scope
:
3503 case bp_shlib_event
:
3504 case bp_thread_event
:
3505 case bp_overlay_event
:
3510 ui_out_field_string (uiout
, "addr", "<PENDING>");
3511 else if (header_of_multiple
)
3512 ui_out_field_string (uiout
, "addr", "<MULTIPLE>");
3514 ui_out_field_core_addr (uiout
, "addr", loc
->address
);
3517 if (!header_of_multiple
)
3518 print_breakpoint_location (b
, loc
, wrap_indent
, stb
);
3520 *last_addr
= b
->loc
->address
;
3524 if (!part_of_multiple
&& b
->thread
!= -1)
3526 /* FIXME: This seems to be redundant and lost here; see the
3527 "stop only in" line a little further down. */
3528 ui_out_text (uiout
, " thread ");
3529 ui_out_field_int (uiout
, "thread", b
->thread
);
3532 ui_out_text (uiout
, "\n");
3534 if (part_of_multiple
&& frame_id_p (b
->frame_id
))
3537 ui_out_text (uiout
, "\tstop only in stack frame at ");
3538 /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
3540 ui_out_field_core_addr (uiout
, "frame", b
->frame_id
.stack_addr
);
3541 ui_out_text (uiout
, "\n");
3544 if (!part_of_multiple
&& b
->cond_string
&& !ada_exception_catchpoint_p (b
))
3546 /* We do not print the condition for Ada exception catchpoints
3547 because the condition is an internal implementation detail
3548 that we do not want to expose to the user. */
3550 ui_out_text (uiout
, "\tstop only if ");
3551 ui_out_field_string (uiout
, "cond", b
->cond_string
);
3552 ui_out_text (uiout
, "\n");
3555 if (!part_of_multiple
&& b
->thread
!= -1)
3557 /* FIXME should make an annotation for this */
3558 ui_out_text (uiout
, "\tstop only in thread ");
3559 ui_out_field_int (uiout
, "thread", b
->thread
);
3560 ui_out_text (uiout
, "\n");
3563 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
)
3565 /* FIXME should make an annotation for this */
3566 if (ep_is_catchpoint (b
))
3567 ui_out_text (uiout
, "\tcatchpoint");
3569 ui_out_text (uiout
, "\tbreakpoint");
3570 ui_out_text (uiout
, " already hit ");
3571 ui_out_field_int (uiout
, "times", b
->hit_count
);
3572 if (b
->hit_count
== 1)
3573 ui_out_text (uiout
, " time\n");
3575 ui_out_text (uiout
, " times\n");
3578 /* Output the count also if it is zero, but only if this is
3579 mi. FIXME: Should have a better test for this. */
3580 if (ui_out_is_mi_like_p (uiout
))
3581 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3582 ui_out_field_int (uiout
, "times", b
->hit_count
);
3584 if (!part_of_multiple
&& b
->ignore_count
)
3587 ui_out_text (uiout
, "\tignore next ");
3588 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3589 ui_out_text (uiout
, " hits\n");
3592 if (!part_of_multiple
&& (l
= b
->commands
))
3594 struct cleanup
*script_chain
;
3597 script_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "script");
3598 print_command_lines (uiout
, l
, 4);
3599 do_cleanups (script_chain
);
3601 do_cleanups (bkpt_chain
);
3602 do_cleanups (old_chain
);
3606 print_one_breakpoint (struct breakpoint
*b
,
3607 CORE_ADDR
*last_addr
)
3609 print_one_breakpoint_location (b
, NULL
, 0, last_addr
);
3611 /* If this breakpoint has custom print function,
3612 it's already printed. Otherwise, print individual
3613 locations, if any. */
3614 if (b
->ops
== NULL
|| b
->ops
->print_one
== NULL
)
3616 /* If breakpoint has a single location that is
3617 disabled, we print it as if it had
3618 several locations, since otherwise it's hard to
3619 represent "breakpoint enabled, location disabled"
3622 && (b
->loc
->next
|| !b
->loc
->enabled
)
3623 && !ui_out_is_mi_like_p (uiout
))
3625 struct bp_location
*loc
;
3627 for (loc
= b
->loc
; loc
; loc
= loc
->next
, ++n
)
3628 print_one_breakpoint_location (b
, loc
, n
, last_addr
);
3634 struct captured_breakpoint_query_args
3640 do_captured_breakpoint_query (struct ui_out
*uiout
, void *data
)
3642 struct captured_breakpoint_query_args
*args
= data
;
3643 struct breakpoint
*b
;
3644 CORE_ADDR dummy_addr
= 0;
3647 if (args
->bnum
== b
->number
)
3649 print_one_breakpoint (b
, &dummy_addr
);
3657 gdb_breakpoint_query (struct ui_out
*uiout
, int bnum
, char **error_message
)
3659 struct captured_breakpoint_query_args args
;
3661 /* For the moment we don't trust print_one_breakpoint() to not throw
3663 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint_query
, &args
,
3664 error_message
, RETURN_MASK_ALL
) < 0)
3670 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3671 catchpoints, et.al.). */
3674 user_settable_breakpoint (const struct breakpoint
*b
)
3676 return (b
->type
== bp_breakpoint
3677 || b
->type
== bp_catch_load
3678 || b
->type
== bp_catch_unload
3679 || b
->type
== bp_catch_fork
3680 || b
->type
== bp_catch_vfork
3681 || b
->type
== bp_catch_exec
3682 || b
->type
== bp_hardware_breakpoint
3683 || b
->type
== bp_watchpoint
3684 || b
->type
== bp_read_watchpoint
3685 || b
->type
== bp_access_watchpoint
3686 || b
->type
== bp_hardware_watchpoint
);
3689 /* Print information on user settable breakpoint (watchpoint, etc)
3690 number BNUM. If BNUM is -1 print all user settable breakpoints.
3691 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3694 breakpoint_1 (int bnum
, int allflag
)
3696 struct breakpoint
*b
;
3697 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3698 int nr_printable_breakpoints
;
3699 struct cleanup
*bkpttbl_chain
;
3701 /* Compute the number of rows in the table. */
3702 nr_printable_breakpoints
= 0;
3705 || bnum
== b
->number
)
3707 if (allflag
|| user_settable_breakpoint (b
))
3708 nr_printable_breakpoints
++;
3713 = make_cleanup_ui_out_table_begin_end (uiout
, 6, nr_printable_breakpoints
,
3717 = make_cleanup_ui_out_table_begin_end (uiout
, 5, nr_printable_breakpoints
,
3720 if (nr_printable_breakpoints
> 0)
3721 annotate_breakpoints_headers ();
3722 if (nr_printable_breakpoints
> 0)
3724 ui_out_table_header (uiout
, 7, ui_left
, "number", "Num"); /* 1 */
3725 if (nr_printable_breakpoints
> 0)
3727 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3728 if (nr_printable_breakpoints
> 0)
3730 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3731 if (nr_printable_breakpoints
> 0)
3733 ui_out_table_header (uiout
, 4, ui_left
, "enabled", "Enb"); /* 4 */
3736 if (nr_printable_breakpoints
> 0)
3738 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3739 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3741 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3743 if (nr_printable_breakpoints
> 0)
3745 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3746 ui_out_table_body (uiout
);
3747 if (nr_printable_breakpoints
> 0)
3748 annotate_breakpoints_table ();
3752 || bnum
== b
->number
)
3754 /* We only print out user settable breakpoints unless the
3756 if (allflag
|| user_settable_breakpoint (b
))
3757 print_one_breakpoint (b
, &last_addr
);
3760 do_cleanups (bkpttbl_chain
);
3762 if (nr_printable_breakpoints
== 0)
3765 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3767 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3772 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3773 that a comparison of an unsigned with -1 is always false. */
3774 if (last_addr
!= (CORE_ADDR
) -1 && !server_command
)
3775 set_next_address (last_addr
);
3778 /* FIXME? Should this be moved up so that it is only called when
3779 there have been breakpoints? */
3780 annotate_breakpoints_table_end ();
3784 breakpoints_info (char *bnum_exp
, int from_tty
)
3789 bnum
= parse_and_eval_long (bnum_exp
);
3791 breakpoint_1 (bnum
, 0);
3795 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3800 bnum
= parse_and_eval_long (bnum_exp
);
3802 breakpoint_1 (bnum
, 1);
3806 breakpoint_has_pc (struct breakpoint
*b
, CORE_ADDR pc
, asection
*section
)
3808 struct bp_location
*bl
= b
->loc
;
3809 for (; bl
; bl
= bl
->next
)
3811 if (bl
->address
== pc
3812 && (!overlay_debugging
|| bl
->section
== section
))
3818 /* Print a message describing any breakpoints set at PC. */
3821 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
, int thread
)
3824 struct breakpoint
*b
;
3827 others
+= breakpoint_has_pc (b
, pc
, section
);
3831 printf_filtered (_("Note: breakpoint "));
3832 else /* if (others == ???) */
3833 printf_filtered (_("Note: breakpoints "));
3835 if (breakpoint_has_pc (b
, pc
, section
))
3838 printf_filtered ("%d", b
->number
);
3839 if (b
->thread
== -1 && thread
!= -1)
3840 printf_filtered (" (all threads)");
3841 else if (b
->thread
!= -1)
3842 printf_filtered (" (thread %d)", b
->thread
);
3843 printf_filtered ("%s%s ",
3844 ((b
->enable_state
== bp_disabled
||
3845 b
->enable_state
== bp_call_disabled
)
3847 : b
->enable_state
== bp_permanent
3851 : ((others
== 1) ? " and" : ""));
3853 printf_filtered (_("also set at pc "));
3854 deprecated_print_address_numeric (pc
, 1, gdb_stdout
);
3855 printf_filtered (".\n");
3859 /* Set the default place to put a breakpoint
3860 for the `break' command with no arguments. */
3863 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3866 default_breakpoint_valid
= valid
;
3867 default_breakpoint_address
= addr
;
3868 default_breakpoint_symtab
= symtab
;
3869 default_breakpoint_line
= line
;
3872 /* Return true iff it is meaningful to use the address member of
3873 BPT. For some breakpoint types, the address member is irrelevant
3874 and it makes no sense to attempt to compare it to other addresses
3875 (or use it for any other purpose either).
3877 More specifically, each of the following breakpoint types will always
3878 have a zero valued address and we don't want check_duplicates() to mark
3879 breakpoints of any of these types to be a duplicate of an actual
3880 breakpoint at address zero:
3883 bp_hardware_watchpoint
3885 bp_access_watchpoint
3892 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3894 enum bptype type
= bpt
->type
;
3896 return (type
!= bp_watchpoint
3897 && type
!= bp_hardware_watchpoint
3898 && type
!= bp_read_watchpoint
3899 && type
!= bp_access_watchpoint
3900 && type
!= bp_catch_exec
3901 && type
!= bp_longjmp_resume
3902 && type
!= bp_catch_fork
3903 && type
!= bp_catch_vfork
);
3906 /* Rescan breakpoints at the same address and section as BPT,
3907 marking the first one as "first" and any others as "duplicates".
3908 This is so that the bpt instruction is only inserted once.
3909 If we have a permanent breakpoint at the same place as BPT, make
3910 that one the official one, and the rest as duplicates. */
3913 check_duplicates_for (CORE_ADDR address
, asection
*section
)
3915 struct bp_location
*b
;
3917 struct bp_location
*perm_bp
= 0;
3919 ALL_BP_LOCATIONS (b
)
3920 if (b
->owner
->enable_state
!= bp_disabled
3921 && b
->owner
->enable_state
!= bp_call_disabled
3923 && !b
->shlib_disabled
3924 && b
->address
== address
/* address / overlay match */
3925 && (!overlay_debugging
|| b
->section
== section
)
3926 && breakpoint_address_is_meaningful (b
->owner
))
3928 /* Have we found a permanent breakpoint? */
3929 if (b
->owner
->enable_state
== bp_permanent
)
3936 b
->duplicate
= count
> 1;
3939 /* If we found a permanent breakpoint at this address, go over the
3940 list again and declare all the other breakpoints there to be the
3944 perm_bp
->duplicate
= 0;
3946 /* Permanent breakpoint should always be inserted. */
3947 if (! perm_bp
->inserted
)
3948 internal_error (__FILE__
, __LINE__
,
3949 _("allegedly permanent breakpoint is not "
3950 "actually inserted"));
3952 ALL_BP_LOCATIONS (b
)
3955 if (b
->owner
->enable_state
!= bp_disabled
3956 && b
->owner
->enable_state
!= bp_call_disabled
3957 && b
->enabled
&& !b
->shlib_disabled
3958 && b
->address
== address
/* address / overlay match */
3959 && (!overlay_debugging
|| b
->section
== section
)
3960 && breakpoint_address_is_meaningful (b
->owner
))
3963 internal_error (__FILE__
, __LINE__
,
3964 _("another breakpoint was inserted on top of "
3965 "a permanent breakpoint"));
3974 check_duplicates (struct breakpoint
*bpt
)
3976 struct bp_location
*bl
= bpt
->loc
;
3978 if (! breakpoint_address_is_meaningful (bpt
))
3981 for (; bl
; bl
= bl
->next
)
3982 check_duplicates_for (bl
->address
, bl
->section
);
3986 breakpoint_adjustment_warning (CORE_ADDR from_addr
, CORE_ADDR to_addr
,
3987 int bnum
, int have_bnum
)
3992 strcpy (astr1
, hex_string_custom ((unsigned long) from_addr
, 8));
3993 strcpy (astr2
, hex_string_custom ((unsigned long) to_addr
, 8));
3995 warning (_("Breakpoint %d address previously adjusted from %s to %s."),
3996 bnum
, astr1
, astr2
);
3998 warning (_("Breakpoint address adjusted from %s to %s."), astr1
, astr2
);
4001 /* Adjust a breakpoint's address to account for architectural constraints
4002 on breakpoint placement. Return the adjusted address. Note: Very
4003 few targets require this kind of adjustment. For most targets,
4004 this function is simply the identity function. */
4007 adjust_breakpoint_address (CORE_ADDR bpaddr
, enum bptype bptype
)
4009 if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch
))
4011 /* Very few targets need any kind of breakpoint adjustment. */
4014 else if (bptype
== bp_watchpoint
4015 || bptype
== bp_hardware_watchpoint
4016 || bptype
== bp_read_watchpoint
4017 || bptype
== bp_access_watchpoint
4018 || bptype
== bp_catch_fork
4019 || bptype
== bp_catch_vfork
4020 || bptype
== bp_catch_exec
)
4022 /* Watchpoints and the various bp_catch_* eventpoints should not
4023 have their addresses modified. */
4028 CORE_ADDR adjusted_bpaddr
;
4030 /* Some targets have architectural constraints on the placement
4031 of breakpoint instructions. Obtain the adjusted address. */
4032 adjusted_bpaddr
= gdbarch_adjust_breakpoint_address (current_gdbarch
,
4035 /* An adjusted breakpoint address can significantly alter
4036 a user's expectations. Print a warning if an adjustment
4038 if (adjusted_bpaddr
!= bpaddr
)
4039 breakpoint_adjustment_warning (bpaddr
, adjusted_bpaddr
, 0, 0);
4041 return adjusted_bpaddr
;
4045 /* Allocate a struct bp_location. */
4047 static struct bp_location
*
4048 allocate_bp_location (struct breakpoint
*bpt
, enum bptype bp_type
)
4050 struct bp_location
*loc
, *loc_p
;
4052 loc
= xmalloc (sizeof (struct bp_location
));
4053 memset (loc
, 0, sizeof (*loc
));
4057 loc
->shlib_disabled
= 0;
4066 case bp_longjmp_resume
:
4067 case bp_step_resume
:
4068 case bp_watchpoint_scope
:
4070 case bp_shlib_event
:
4071 case bp_thread_event
:
4072 case bp_overlay_event
:
4074 case bp_catch_unload
:
4075 loc
->loc_type
= bp_loc_software_breakpoint
;
4077 case bp_hardware_breakpoint
:
4078 loc
->loc_type
= bp_loc_hardware_breakpoint
;
4080 case bp_hardware_watchpoint
:
4081 case bp_read_watchpoint
:
4082 case bp_access_watchpoint
:
4083 loc
->loc_type
= bp_loc_hardware_watchpoint
;
4087 case bp_catch_vfork
:
4089 loc
->loc_type
= bp_loc_other
;
4092 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
4095 /* Add this breakpoint to the end of the chain. */
4097 loc_p
= bp_location_chain
;
4099 bp_location_chain
= loc
;
4102 while (loc_p
->global_next
)
4103 loc_p
= loc_p
->global_next
;
4104 loc_p
->global_next
= loc
;
4110 static void free_bp_location (struct bp_location
*loc
)
4117 /* Helper to set_raw_breakpoint below. Creates a breakpoint
4118 that has type BPTYPE and has no locations as yet. */
4120 static struct breakpoint
*
4121 set_raw_breakpoint_without_location (enum bptype bptype
)
4123 struct breakpoint
*b
, *b1
;
4125 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
4126 memset (b
, 0, sizeof (*b
));
4129 b
->language
= current_language
->la_language
;
4130 b
->input_radix
= input_radix
;
4132 b
->enable_state
= bp_enabled
;
4135 b
->ignore_count
= 0;
4137 b
->frame_id
= null_frame_id
;
4138 b
->dll_pathname
= NULL
;
4139 b
->triggered_dll_pathname
= NULL
;
4140 b
->forked_inferior_pid
= 0;
4141 b
->exec_pathname
= NULL
;
4143 b
->condition_not_parsed
= 0;
4145 /* Add this breakpoint to the end of the chain
4146 so that a list of breakpoints will come out in order
4147 of increasing numbers. */
4149 b1
= breakpoint_chain
;
4151 breakpoint_chain
= b
;
4161 /* Initialize loc->function_name. */
4163 set_breakpoint_location_function (struct bp_location
*loc
)
4165 if (loc
->owner
->type
== bp_breakpoint
4166 || loc
->owner
->type
== bp_hardware_breakpoint
)
4168 find_pc_partial_function (loc
->address
, &(loc
->function_name
),
4170 if (loc
->function_name
)
4171 loc
->function_name
= xstrdup (loc
->function_name
);
4175 /* set_raw_breakpoint is a low level routine for allocating and
4176 partially initializing a breakpoint of type BPTYPE. The newly
4177 created breakpoint's address, section, source file name, and line
4178 number are provided by SAL. The newly created and partially
4179 initialized breakpoint is added to the breakpoint chain and
4180 is also returned as the value of this function.
4182 It is expected that the caller will complete the initialization of
4183 the newly created breakpoint struct as well as output any status
4184 information regarding the creation of a new breakpoint. In
4185 particular, set_raw_breakpoint does NOT set the breakpoint
4186 number! Care should be taken to not allow an error to occur
4187 prior to completing the initialization of the breakpoint. If this
4188 should happen, a bogus breakpoint will be left on the chain. */
4191 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
4193 struct breakpoint
*b
= set_raw_breakpoint_without_location (bptype
);
4194 CORE_ADDR adjusted_address
;
4196 /* Adjust the breakpoint's address prior to allocating a location.
4197 Once we call allocate_bp_location(), that mostly uninitialized
4198 location will be placed on the location chain. Adjustment of the
4199 breakpoint may cause read_memory_nobpt() to be called and we do
4200 not want its scan of the location chain to find a breakpoint and
4201 location that's only been partially initialized. */
4202 adjusted_address
= adjust_breakpoint_address (sal
.pc
, bptype
);
4204 b
->loc
= allocate_bp_location (b
, bptype
);
4205 b
->loc
->requested_address
= sal
.pc
;
4206 b
->loc
->address
= adjusted_address
;
4208 if (sal
.symtab
== NULL
)
4209 b
->source_file
= NULL
;
4211 b
->source_file
= savestring (sal
.symtab
->filename
,
4212 strlen (sal
.symtab
->filename
));
4213 b
->loc
->section
= sal
.section
;
4214 b
->line_number
= sal
.line
;
4216 set_breakpoint_location_function (b
->loc
);
4218 check_duplicates (b
);
4219 breakpoints_changed ();
4225 /* Note that the breakpoint object B describes a permanent breakpoint
4226 instruction, hard-wired into the inferior's code. */
4228 make_breakpoint_permanent (struct breakpoint
*b
)
4230 struct bp_location
*bl
;
4231 b
->enable_state
= bp_permanent
;
4233 /* By definition, permanent breakpoints are already present in the code.
4234 Mark all locations as inserted. For now, make_breakpoint_permanent
4235 is called in just one place, so it's hard to say if it's reasonable
4236 to have permanent breakpoint with multiple locations or not,
4237 but it's easy to implmement. */
4238 for (bl
= b
->loc
; bl
; bl
= bl
->next
)
4242 static struct breakpoint
*
4243 create_internal_breakpoint (CORE_ADDR address
, enum bptype type
)
4245 static int internal_breakpoint_number
= -1;
4246 struct symtab_and_line sal
;
4247 struct breakpoint
*b
;
4249 init_sal (&sal
); /* initialize to zeroes */
4252 sal
.section
= find_pc_overlay (sal
.pc
);
4254 b
= set_raw_breakpoint (sal
, type
);
4255 b
->number
= internal_breakpoint_number
--;
4256 b
->disposition
= disp_donttouch
;
4263 create_longjmp_breakpoint (char *func_name
)
4265 struct breakpoint
*b
;
4266 struct minimal_symbol
*m
;
4268 if (func_name
== NULL
)
4269 b
= create_internal_breakpoint (0, bp_longjmp_resume
);
4272 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4275 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
), bp_longjmp
);
4278 b
->enable_state
= bp_disabled
;
4281 b
->addr_string
= xstrdup (func_name
);
4284 /* Call this routine when stepping and nexting to enable a breakpoint
4285 if we do a longjmp(). When we hit that breakpoint, call
4286 set_longjmp_resume_breakpoint() to figure out where we are going. */
4289 enable_longjmp_breakpoint (void)
4291 struct breakpoint
*b
;
4294 if (b
->type
== bp_longjmp
)
4296 b
->enable_state
= bp_enabled
;
4297 check_duplicates (b
);
4302 disable_longjmp_breakpoint (void)
4304 struct breakpoint
*b
;
4307 if (b
->type
== bp_longjmp
4308 || b
->type
== bp_longjmp_resume
)
4310 b
->enable_state
= bp_disabled
;
4311 check_duplicates (b
);
4316 create_overlay_event_breakpoint (char *func_name
)
4318 struct breakpoint
*b
;
4319 struct minimal_symbol
*m
;
4321 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4324 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
),
4326 b
->addr_string
= xstrdup (func_name
);
4328 if (overlay_debugging
== ovly_auto
)
4330 b
->enable_state
= bp_enabled
;
4331 overlay_events_enabled
= 1;
4335 b
->enable_state
= bp_disabled
;
4336 overlay_events_enabled
= 0;
4341 enable_overlay_breakpoints (void)
4343 struct breakpoint
*b
;
4346 if (b
->type
== bp_overlay_event
)
4348 b
->enable_state
= bp_enabled
;
4349 check_duplicates (b
);
4350 overlay_events_enabled
= 1;
4355 disable_overlay_breakpoints (void)
4357 struct breakpoint
*b
;
4360 if (b
->type
== bp_overlay_event
)
4362 b
->enable_state
= bp_disabled
;
4363 check_duplicates (b
);
4364 overlay_events_enabled
= 0;
4369 create_thread_event_breakpoint (CORE_ADDR address
)
4371 struct breakpoint
*b
;
4373 b
= create_internal_breakpoint (address
, bp_thread_event
);
4375 b
->enable_state
= bp_enabled
;
4376 /* addr_string has to be used or breakpoint_re_set will delete me. */
4377 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4383 remove_thread_event_breakpoints (void)
4385 struct breakpoint
*b
, *temp
;
4387 ALL_BREAKPOINTS_SAFE (b
, temp
)
4388 if (b
->type
== bp_thread_event
)
4389 delete_breakpoint (b
);
4392 struct captured_parse_breakpoint_args
4395 struct symtabs_and_lines
*sals_p
;
4396 char ***addr_string_p
;
4400 struct lang_and_radix
4408 remove_solib_event_breakpoints (void)
4410 struct breakpoint
*b
, *temp
;
4412 ALL_BREAKPOINTS_SAFE (b
, temp
)
4413 if (b
->type
== bp_shlib_event
)
4414 delete_breakpoint (b
);
4418 create_solib_event_breakpoint (CORE_ADDR address
)
4420 struct breakpoint
*b
;
4422 b
= create_internal_breakpoint (address
, bp_shlib_event
);
4426 /* Disable any breakpoints that are on code in shared libraries. Only
4427 apply to enabled breakpoints, disabled ones can just stay disabled. */
4430 disable_breakpoints_in_shlibs (void)
4432 struct bp_location
*loc
;
4433 int disabled_shlib_breaks
= 0;
4435 ALL_BP_LOCATIONS (loc
)
4437 struct breakpoint
*b
= loc
->owner
;
4438 /* We apply the check to all breakpoints, including disabled
4439 for those with loc->duplicate set. This is so that when breakpoint
4440 becomes enabled, or the duplicate is removed, gdb will try to insert
4441 all breakpoints. If we don't set shlib_disabled here, we'll try
4442 to insert those breakpoints and fail. */
4443 if (((b
->type
== bp_breakpoint
) || (b
->type
== bp_hardware_breakpoint
))
4444 && !loc
->shlib_disabled
4446 && PC_SOLIB (loc
->address
)
4448 && solib_address (loc
->address
)
4452 loc
->shlib_disabled
= 1;
4457 /* Disable any breakpoints that are in in an unloaded shared library. Only
4458 apply to enabled breakpoints, disabled ones can just stay disabled. */
4461 disable_breakpoints_in_unloaded_shlib (struct so_list
*solib
)
4463 struct bp_location
*loc
;
4464 int disabled_shlib_breaks
= 0;
4466 ALL_BP_LOCATIONS (loc
)
4468 struct breakpoint
*b
= loc
->owner
;
4469 if ((loc
->loc_type
== bp_loc_hardware_breakpoint
4470 || loc
->loc_type
== bp_loc_software_breakpoint
)
4471 && !loc
->shlib_disabled
)
4474 char *so_name
= PC_SOLIB (loc
->address
);
4476 char *so_name
= solib_address (loc
->address
);
4478 if (so_name
&& !strcmp (so_name
, solib
->so_name
))
4480 loc
->shlib_disabled
= 1;
4481 /* At this point, we cannot rely on remove_breakpoint
4482 succeeding so we must mark the breakpoint as not inserted
4483 to prevent future errors occurring in remove_breakpoints. */
4485 if (!disabled_shlib_breaks
)
4487 target_terminal_ours_for_output ();
4488 warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""),
4491 disabled_shlib_breaks
= 1;
4498 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4499 enum bptype bp_kind
)
4501 struct symtab_and_line sal
;
4502 struct breakpoint
*b
;
4503 int thread
= -1; /* All threads. */
4510 b
= set_raw_breakpoint (sal
, bp_kind
);
4511 set_breakpoint_count (breakpoint_count
+ 1);
4512 b
->number
= breakpoint_count
;
4513 b
->cond_string
= (cond_string
== NULL
) ?
4514 NULL
: savestring (cond_string
, strlen (cond_string
));
4516 b
->addr_string
= NULL
;
4517 b
->enable_state
= bp_enabled
;
4518 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4519 b
->forked_inferior_pid
= 0;
4525 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4527 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4531 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4533 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4537 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4539 struct symtab_and_line sal
;
4540 struct breakpoint
*b
;
4541 int thread
= -1; /* All threads. */
4548 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4549 set_breakpoint_count (breakpoint_count
+ 1);
4550 b
->number
= breakpoint_count
;
4551 b
->cond_string
= (cond_string
== NULL
) ?
4552 NULL
: savestring (cond_string
, strlen (cond_string
));
4554 b
->addr_string
= NULL
;
4555 b
->enable_state
= bp_enabled
;
4556 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4562 hw_breakpoint_used_count (void)
4564 struct breakpoint
*b
;
4569 if (b
->type
== bp_hardware_breakpoint
&& b
->enable_state
== bp_enabled
)
4577 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4579 struct breakpoint
*b
;
4582 *other_type_used
= 0;
4585 if (breakpoint_enabled (b
))
4587 if (b
->type
== type
)
4589 else if ((b
->type
== bp_hardware_watchpoint
||
4590 b
->type
== bp_read_watchpoint
||
4591 b
->type
== bp_access_watchpoint
))
4592 *other_type_used
= 1;
4598 /* Call this after hitting the longjmp() breakpoint. Use this to set
4599 a new breakpoint at the target of the jmp_buf.
4601 FIXME - This ought to be done by setting a temporary breakpoint
4602 that gets deleted automatically... */
4605 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_id frame_id
)
4607 struct breakpoint
*b
;
4610 if (b
->type
== bp_longjmp_resume
)
4612 b
->loc
->requested_address
= pc
;
4613 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4615 b
->enable_state
= bp_enabled
;
4616 b
->frame_id
= frame_id
;
4617 check_duplicates (b
);
4623 disable_watchpoints_before_interactive_call_start (void)
4625 struct breakpoint
*b
;
4629 if (((b
->type
== bp_watchpoint
)
4630 || (b
->type
== bp_hardware_watchpoint
)
4631 || (b
->type
== bp_read_watchpoint
)
4632 || (b
->type
== bp_access_watchpoint
))
4633 && breakpoint_enabled (b
))
4635 b
->enable_state
= bp_call_disabled
;
4636 check_duplicates (b
);
4642 enable_watchpoints_after_interactive_call_stop (void)
4644 struct breakpoint
*b
;
4648 if (((b
->type
== bp_watchpoint
)
4649 || (b
->type
== bp_hardware_watchpoint
)
4650 || (b
->type
== bp_read_watchpoint
)
4651 || (b
->type
== bp_access_watchpoint
))
4652 && (b
->enable_state
== bp_call_disabled
))
4654 b
->enable_state
= bp_enabled
;
4655 check_duplicates (b
);
4661 /* Set a breakpoint that will evaporate an end of command
4662 at address specified by SAL.
4663 Restrict it to frame FRAME if FRAME is nonzero. */
4666 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_id frame_id
,
4669 struct breakpoint
*b
;
4670 b
= set_raw_breakpoint (sal
, type
);
4671 b
->enable_state
= bp_enabled
;
4672 b
->disposition
= disp_donttouch
;
4673 b
->frame_id
= frame_id
;
4675 /* If we're debugging a multi-threaded program, then we
4676 want momentary breakpoints to be active in only a
4677 single thread of control. */
4678 if (in_thread_list (inferior_ptid
))
4679 b
->thread
= pid_to_thread_id (inferior_ptid
);
4685 /* Tell the user we have just set a breakpoint B. */
4688 mention (struct breakpoint
*b
)
4691 struct cleanup
*old_chain
, *ui_out_chain
;
4692 struct ui_stream
*stb
;
4694 stb
= ui_out_stream_new (uiout
);
4695 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4697 /* FIXME: This is misplaced; mention() is called by things (like
4698 hitting a watchpoint) other than breakpoint creation. It should
4699 be possible to clean this up and at the same time replace the
4700 random calls to breakpoint_changed with this hook, as has already
4701 been done for deprecated_delete_breakpoint_hook and so on. */
4702 if (deprecated_create_breakpoint_hook
)
4703 deprecated_create_breakpoint_hook (b
);
4704 breakpoint_create_event (b
->number
);
4706 if (b
->ops
!= NULL
&& b
->ops
->print_mention
!= NULL
)
4707 b
->ops
->print_mention (b
);
4712 printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b
->number
);
4715 ui_out_text (uiout
, "Watchpoint ");
4716 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4717 ui_out_field_int (uiout
, "number", b
->number
);
4718 ui_out_text (uiout
, ": ");
4719 print_expression (b
->exp
, stb
->stream
);
4720 ui_out_field_stream (uiout
, "exp", stb
);
4721 do_cleanups (ui_out_chain
);
4723 case bp_hardware_watchpoint
:
4724 ui_out_text (uiout
, "Hardware watchpoint ");
4725 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4726 ui_out_field_int (uiout
, "number", b
->number
);
4727 ui_out_text (uiout
, ": ");
4728 print_expression (b
->exp
, stb
->stream
);
4729 ui_out_field_stream (uiout
, "exp", stb
);
4730 do_cleanups (ui_out_chain
);
4732 case bp_read_watchpoint
:
4733 ui_out_text (uiout
, "Hardware read watchpoint ");
4734 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-rwpt");
4735 ui_out_field_int (uiout
, "number", b
->number
);
4736 ui_out_text (uiout
, ": ");
4737 print_expression (b
->exp
, stb
->stream
);
4738 ui_out_field_stream (uiout
, "exp", stb
);
4739 do_cleanups (ui_out_chain
);
4741 case bp_access_watchpoint
:
4742 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4743 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-awpt");
4744 ui_out_field_int (uiout
, "number", b
->number
);
4745 ui_out_text (uiout
, ": ");
4746 print_expression (b
->exp
, stb
->stream
);
4747 ui_out_field_stream (uiout
, "exp", stb
);
4748 do_cleanups (ui_out_chain
);
4751 if (ui_out_is_mi_like_p (uiout
))
4756 printf_filtered (_("Breakpoint %d"), b
->number
);
4759 case bp_hardware_breakpoint
:
4760 if (ui_out_is_mi_like_p (uiout
))
4765 printf_filtered (_("Hardware assisted breakpoint %d"), b
->number
);
4769 case bp_catch_unload
:
4770 printf_filtered (_("Catchpoint %d (%s %s)"),
4772 (b
->type
== bp_catch_load
) ? "load" : "unload",
4773 (b
->dll_pathname
!= NULL
) ?
4774 b
->dll_pathname
: "<any library>");
4777 case bp_catch_vfork
:
4778 printf_filtered (_("Catchpoint %d (%s)"),
4780 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4783 printf_filtered (_("Catchpoint %d (exec)"),
4790 case bp_longjmp_resume
:
4791 case bp_step_resume
:
4793 case bp_watchpoint_scope
:
4794 case bp_shlib_event
:
4795 case bp_thread_event
:
4796 case bp_overlay_event
:
4802 /* i18n: cagney/2005-02-11: Below needs to be merged into a
4806 printf_filtered (_(" (%s) pending."), b
->addr_string
);
4810 if (addressprint
|| b
->source_file
== NULL
)
4812 printf_filtered (" at ");
4813 deprecated_print_address_numeric (b
->loc
->address
, 1, gdb_stdout
);
4816 printf_filtered (": file %s, line %d.",
4817 b
->source_file
, b
->line_number
);
4821 struct bp_location
*loc
= b
->loc
;
4823 for (; loc
; loc
= loc
->next
)
4825 printf_filtered (" (%d locations)", n
);
4830 do_cleanups (old_chain
);
4831 if (ui_out_is_mi_like_p (uiout
))
4833 printf_filtered ("\n");
4837 static struct bp_location
*
4838 add_location_to_breakpoint (struct breakpoint
*b
, enum bptype bptype
,
4839 const struct symtab_and_line
*sal
)
4841 struct bp_location
*loc
, **tmp
;
4843 loc
= allocate_bp_location (b
, bptype
);
4844 for (tmp
= &(b
->loc
); *tmp
!= NULL
; tmp
= &((*tmp
)->next
))
4847 loc
->requested_address
= sal
->pc
;
4848 loc
->address
= adjust_breakpoint_address (loc
->requested_address
,
4850 loc
->section
= sal
->section
;
4852 set_breakpoint_location_function (loc
);
4856 /* Create a breakpoint with SAL as location. Use ADDR_STRING
4857 as textual description of the location, and COND_STRING
4858 as condition expression. */
4861 create_breakpoint (struct symtabs_and_lines sals
, char *addr_string
,
4863 enum bptype type
, enum bpdisp disposition
,
4864 int thread
, int ignore_count
, int from_tty
)
4866 struct breakpoint
*b
= NULL
;
4869 if (type
== bp_hardware_breakpoint
)
4871 int i
= hw_breakpoint_used_count ();
4872 int target_resources_ok
=
4873 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4875 if (target_resources_ok
== 0)
4876 error (_("No hardware breakpoint support in the target."));
4877 else if (target_resources_ok
< 0)
4878 error (_("Hardware breakpoints used exceeds limit."));
4881 for (i
= 0; i
< sals
.nelts
; ++i
)
4883 struct symtab_and_line sal
= sals
.sals
[i
];
4884 struct bp_location
*loc
;
4887 describe_other_breakpoints (sal
.pc
, sal
.section
, thread
);
4891 b
= set_raw_breakpoint (sal
, type
);
4892 set_breakpoint_count (breakpoint_count
+ 1);
4893 b
->number
= breakpoint_count
;
4896 b
->cond_string
= cond_string
;
4897 b
->ignore_count
= ignore_count
;
4898 b
->enable_state
= bp_enabled
;
4899 b
->disposition
= disposition
;
4905 loc
= add_location_to_breakpoint (b
, type
, &sal
);
4910 char *arg
= b
->cond_string
;
4911 loc
->cond
= parse_exp_1 (&arg
, block_for_pc (loc
->address
), 0);
4913 error (_("Garbage %s follows condition"), arg
);
4918 b
->addr_string
= addr_string
;
4920 /* addr_string has to be used or breakpoint_re_set will delete
4922 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4927 /* Remove element at INDEX_TO_REMOVE from SAL, shifting other
4928 elements to fill the void space. */
4929 static void remove_sal (struct symtabs_and_lines
*sal
, int index_to_remove
)
4931 int i
= index_to_remove
+1;
4932 int last_index
= sal
->nelts
-1;
4934 for (;i
<= last_index
; ++i
)
4935 sal
->sals
[i
-1] = sal
->sals
[i
];
4940 /* If appropriate, obtains all sals that correspond
4941 to the same file and line as SAL. This is done
4942 only if SAL does not have explicit PC and has
4943 line and file information. If we got just a single
4944 expanded sal, return the original.
4946 Otherwise, if SAL.explicit_line is not set, filter out
4947 all sals for which the name of enclosing function
4948 is different from SAL. This makes sure that if we have
4949 breakpoint originally set in template instantiation, say
4950 foo<int>(), we won't expand SAL to locations at the same
4951 line in all existing instantiations of 'foo'.
4954 struct symtabs_and_lines
4955 expand_line_sal_maybe (struct symtab_and_line sal
)
4957 struct symtabs_and_lines expanded
;
4958 CORE_ADDR original_pc
= sal
.pc
;
4959 char *original_function
= NULL
;
4963 /* If we have explicit pc, don't expand.
4964 If we have no line number, we can't expand. */
4965 if (sal
.explicit_pc
|| sal
.line
== 0 || sal
.symtab
== NULL
)
4968 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4969 expanded
.sals
[0] = sal
;
4974 find_pc_partial_function (original_pc
, &original_function
, NULL
, NULL
);
4976 expanded
= expand_line_sal (sal
);
4977 if (expanded
.nelts
== 1)
4979 /* We had one sal, we got one sal. Without futher
4980 processing, just return the original sal. */
4981 xfree (expanded
.sals
);
4983 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4984 sal
.pc
= original_pc
;
4985 expanded
.sals
[0] = sal
;
4989 if (!sal
.explicit_line
)
4991 CORE_ADDR func_addr
, func_end
;
4992 for (i
= 0; i
< expanded
.nelts
; ++i
)
4994 CORE_ADDR pc
= expanded
.sals
[i
].pc
;
4995 char *this_function
;
4996 if (find_pc_partial_function (pc
, &this_function
,
4997 &func_addr
, &func_end
))
4999 if (this_function
&&
5000 strcmp (this_function
, original_function
) != 0)
5002 remove_sal (&expanded
, i
);
5005 else if (func_addr
== pc
)
5007 /* We're at beginning of a function, and should
5009 struct symbol
*sym
= find_pc_function (pc
);
5011 expanded
.sals
[i
] = find_function_start_sal (sym
, 1);
5014 = gdbarch_skip_prologue (current_gdbarch
, pc
);
5021 if (expanded
.nelts
<= 1)
5023 /* This is un ugly workaround. If we get zero
5024 expanded sals then something is really wrong.
5025 Fix that by returnign the original sal. */
5026 xfree (expanded
.sals
);
5028 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
5029 sal
.pc
= original_pc
;
5030 expanded
.sals
[0] = sal
;
5037 for (i
= 0; i
< expanded
.nelts
; ++i
)
5038 if (expanded
.sals
[i
].pc
== original_pc
)
5049 /* Add SALS.nelts breakpoints to the breakpoint table. For each
5050 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i]
5051 value. COND_STRING, if not NULL, specified the condition to be
5052 used for all breakpoints. Essentially the only case where
5053 SALS.nelts is not 1 is when we set a breakpoint on an overloaded
5054 function. In that case, it's still not possible to specify
5055 separate conditions for different overloaded functions, so
5056 we take just a single condition string.
5058 NOTE: If the function succeeds, the caller is expected to cleanup
5059 the arrays ADDR_STRING, COND_STRING, and SALS (but not the
5060 array contents). If the function fails (error() is called), the
5061 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
5062 COND and SALS arrays and each of those arrays contents. */
5065 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
5067 enum bptype type
, enum bpdisp disposition
,
5068 int thread
, int ignore_count
, int from_tty
)
5071 for (i
= 0; i
< sals
.nelts
; ++i
)
5073 struct symtabs_and_lines expanded
=
5074 expand_line_sal_maybe (sals
.sals
[i
]);
5076 create_breakpoint (expanded
, addr_string
[i
],
5077 cond_string
, type
, disposition
,
5078 thread
, ignore_count
, from_tty
);
5082 /* Parse ARG which is assumed to be a SAL specification possibly
5083 followed by conditionals. On return, SALS contains an array of SAL
5084 addresses found. ADDR_STRING contains a vector of (canonical)
5085 address strings. ARG points to the end of the SAL. */
5088 parse_breakpoint_sals (char **address
,
5089 struct symtabs_and_lines
*sals
,
5090 char ***addr_string
,
5093 char *addr_start
= *address
;
5094 *addr_string
= NULL
;
5095 /* If no arg given, or if first arg is 'if ', use the default
5097 if ((*address
) == NULL
5098 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
5100 if (default_breakpoint_valid
)
5102 struct symtab_and_line sal
;
5103 init_sal (&sal
); /* initialize to zeroes */
5104 sals
->sals
= (struct symtab_and_line
*)
5105 xmalloc (sizeof (struct symtab_and_line
));
5106 sal
.pc
= default_breakpoint_address
;
5107 sal
.line
= default_breakpoint_line
;
5108 sal
.symtab
= default_breakpoint_symtab
;
5109 sal
.section
= find_pc_overlay (sal
.pc
);
5110 sals
->sals
[0] = sal
;
5114 error (_("No default breakpoint address now."));
5118 /* Force almost all breakpoints to be in terms of the
5119 current_source_symtab (which is decode_line_1's default). This
5120 should produce the results we want almost all of the time while
5121 leaving default_breakpoint_* alone.
5122 ObjC: However, don't match an Objective-C method name which
5123 may have a '+' or '-' succeeded by a '[' */
5125 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
5127 if (default_breakpoint_valid
5129 || ((strchr ("+-", (*address
)[0]) != NULL
)
5130 && ((*address
)[1] != '['))))
5131 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
5132 default_breakpoint_line
, addr_string
,
5135 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0,
5136 addr_string
, not_found_ptr
);
5138 /* For any SAL that didn't have a canonical string, fill one in. */
5139 if (sals
->nelts
> 0 && *addr_string
== NULL
)
5140 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
5141 if (addr_start
!= (*address
))
5144 for (i
= 0; i
< sals
->nelts
; i
++)
5146 /* Add the string if not present. */
5147 if ((*addr_string
)[i
] == NULL
)
5148 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
5154 /* Convert each SAL into a real PC. Verify that the PC can be
5155 inserted as a breakpoint. If it can't throw an error. */
5158 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
5162 for (i
= 0; i
< sals
->nelts
; i
++)
5163 resolve_sal_pc (&sals
->sals
[i
]);
5167 do_captured_parse_breakpoint (struct ui_out
*ui
, void *data
)
5169 struct captured_parse_breakpoint_args
*args
= data
;
5171 parse_breakpoint_sals (args
->arg_p
, args
->sals_p
, args
->addr_string_p
,
5172 args
->not_found_ptr
);
5175 /* Given TOK, a string specification of condition and thread, as
5176 accepted by the 'break' command, extract the condition
5177 string and thread number and set *COND_STRING and *THREAD.
5178 PC identifies the context at which the condition should be parsed.
5179 If no condition is found, *COND_STRING is set to NULL.
5180 If no thread is found, *THREAD is set to -1. */
5182 find_condition_and_thread (char *tok
, CORE_ADDR pc
,
5183 char **cond_string
, int *thread
)
5185 *cond_string
= NULL
;
5191 char *cond_start
= NULL
;
5192 char *cond_end
= NULL
;
5193 while (*tok
== ' ' || *tok
== '\t')
5198 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5201 toklen
= end_tok
- tok
;
5203 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5205 tok
= cond_start
= end_tok
+ 1;
5206 parse_exp_1 (&tok
, block_for_pc (pc
), 0);
5208 *cond_string
= savestring (cond_start
,
5209 cond_end
- cond_start
);
5211 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
5217 *thread
= strtol (tok
, &tok
, 0);
5219 error (_("Junk after thread keyword."));
5220 if (!valid_thread_id (*thread
))
5221 error (_("Unknown thread %d."), *thread
);
5224 error (_("Junk at end of arguments."));
5228 /* Set a breakpoint. This function is shared between
5229 CLI and MI functions for setting a breakpoint.
5230 This function has two major modes of operations,
5231 selected by the PARSE_CONDITION_AND_THREAD parameter.
5232 If non-zero, the function will parse arg, extracting
5233 breakpoint location, address and thread. Otherwise,
5234 ARG is just the location of breakpoint, with condition
5235 and thread specified by the COND_STRING and THREAD
5239 break_command_really (char *arg
, char *cond_string
, int thread
,
5240 int parse_condition_and_thread
,
5241 int tempflag
, int hardwareflag
,
5242 enum auto_boolean pending_break_support
,
5245 struct gdb_exception e
;
5246 struct symtabs_and_lines sals
;
5247 struct symtab_and_line pending_sal
;
5250 char *addr_start
= arg
;
5252 struct cleanup
*old_chain
;
5253 struct cleanup
*breakpoint_chain
= NULL
;
5254 struct captured_parse_breakpoint_args parse_args
;
5257 int ignore_count
= 0;
5264 parse_args
.arg_p
= &arg
;
5265 parse_args
.sals_p
= &sals
;
5266 parse_args
.addr_string_p
= &addr_string
;
5267 parse_args
.not_found_ptr
= ¬_found
;
5269 e
= catch_exception (uiout
, do_captured_parse_breakpoint
,
5270 &parse_args
, RETURN_MASK_ALL
);
5272 /* If caller is interested in rc value from parse, set value. */
5276 exception_print (gdb_stderr
, e
);
5281 case NOT_FOUND_ERROR
:
5283 exception_print (gdb_stderr
, e
);
5285 /* If pending breakpoint support is turned off, throw
5288 if (pending_break_support
== AUTO_BOOLEAN_FALSE
)
5289 deprecated_throw_reason (RETURN_ERROR
);
5291 /* If pending breakpoint support is auto query and the user
5292 selects no, then simply return the error code. */
5293 if (pending_break_support
== AUTO_BOOLEAN_AUTO
&&
5294 !nquery ("Make breakpoint pending on future shared library load? "))
5297 /* At this point, either the user was queried about setting
5298 a pending breakpoint and selected yes, or pending
5299 breakpoint behavior is on and thus a pending breakpoint
5300 is defaulted on behalf of the user. */
5301 copy_arg
= xstrdup (addr_start
);
5302 addr_string
= ©_arg
;
5304 sals
.sals
= &pending_sal
;
5309 exception_print (gdb_stderr
, e
);
5317 /* Create a chain of things that always need to be cleaned up. */
5318 old_chain
= make_cleanup (null_cleanup
, 0);
5322 /* Make sure that all storage allocated to SALS gets freed. */
5323 make_cleanup (xfree
, sals
.sals
);
5325 /* Cleanup the addr_string array but not its contents. */
5326 make_cleanup (xfree
, addr_string
);
5329 /* ----------------------------- SNIP -----------------------------
5330 Anything added to the cleanup chain beyond this point is assumed
5331 to be part of a breakpoint. If the breakpoint create succeeds
5332 then the memory is not reclaimed. */
5333 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5335 /* Mark the contents of the addr_string for cleanup. These go on
5336 the breakpoint_chain and only occure if the breakpoint create
5338 for (i
= 0; i
< sals
.nelts
; i
++)
5340 if (addr_string
[i
] != NULL
)
5341 make_cleanup (xfree
, addr_string
[i
]);
5344 /* Resolve all line numbers to PC's and verify that the addresses
5345 are ok for the target. */
5347 breakpoint_sals_to_pc (&sals
, addr_start
);
5349 /* Verify that condition can be parsed, before setting any
5350 breakpoints. Allocate a separate condition expression for each
5354 if (parse_condition_and_thread
)
5356 /* Here we only parse 'arg' to separate condition
5357 from thread number, so parsing in context of first
5358 sal is OK. When setting the breakpoint we'll
5359 re-parse it in context of each sal. */
5362 find_condition_and_thread (arg
, sals
.sals
[0].pc
, &cond_string
, &thread
);
5364 make_cleanup (xfree
, cond_string
);
5368 /* Create a private copy of condition string. */
5371 cond_string
= xstrdup (cond_string
);
5372 make_cleanup (xfree
, cond_string
);
5375 create_breakpoints (sals
, addr_string
, cond_string
,
5376 hardwareflag
? bp_hardware_breakpoint
5378 tempflag
? disp_del
: disp_donttouch
,
5379 thread
, ignore_count
, from_tty
);
5383 struct symtab_and_line sal
= {0};
5384 struct breakpoint
*b
;
5386 make_cleanup (xfree
, copy_arg
);
5388 b
= set_raw_breakpoint_without_location (hardwareflag
5389 ? bp_hardware_breakpoint
5391 set_breakpoint_count (breakpoint_count
+ 1);
5392 b
->number
= breakpoint_count
;
5394 b
->addr_string
= addr_string
[0];
5395 b
->cond_string
= NULL
;
5396 b
->ignore_count
= ignore_count
;
5397 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
5398 b
->condition_not_parsed
= 1;
5403 warning (_("Multiple breakpoints were set.\n"
5404 "Use the \"delete\" command to delete unwanted breakpoints."));
5405 /* That's it. Discard the cleanups for data inserted into the
5407 discard_cleanups (breakpoint_chain
);
5408 /* But cleanup everything else. */
5409 do_cleanups (old_chain
);
5414 /* Set a breakpoint.
5415 ARG is a string describing breakpoint address,
5416 condition, and thread.
5417 FLAG specifies if a breakpoint is hardware on,
5418 and if breakpoint is temporary, using BP_HARDWARE_FLAG
5422 break_command_1 (char *arg
, int flag
, int from_tty
)
5424 int hardwareflag
= flag
& BP_HARDWAREFLAG
;
5425 int tempflag
= flag
& BP_TEMPFLAG
;
5427 return break_command_really (arg
,
5428 NULL
, 0, 1 /* parse arg */,
5429 tempflag
, hardwareflag
,
5430 pending_break_support
, from_tty
);
5435 gdb_breakpoint (char *address
, char *condition
,
5436 int hardwareflag
, int tempflag
,
5437 int thread
, int ignore_count
,
5439 char **error_message
)
5441 return break_command_really (address
, condition
, thread
,
5442 0 /* condition and thread are valid. */,
5443 tempflag
, hardwareflag
,
5445 ? AUTO_BOOLEAN_TRUE
: AUTO_BOOLEAN_FALSE
,
5450 /* Helper function for break_command_1 and disassemble_command. */
5453 resolve_sal_pc (struct symtab_and_line
*sal
)
5457 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5459 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5460 error (_("No line %d in file \"%s\"."),
5461 sal
->line
, sal
->symtab
->filename
);
5465 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5467 struct blockvector
*bv
;
5471 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &b
, sal
->symtab
);
5474 sym
= block_function (b
);
5477 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5478 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5482 /* It really is worthwhile to have the section, so we'll just
5483 have to look harder. This case can be executed if we have
5484 line numbers but no functions (as can happen in assembly
5487 struct minimal_symbol
*msym
;
5489 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5491 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5498 break_command (char *arg
, int from_tty
)
5500 break_command_1 (arg
, 0, from_tty
);
5504 tbreak_command (char *arg
, int from_tty
)
5506 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5510 hbreak_command (char *arg
, int from_tty
)
5512 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5516 thbreak_command (char *arg
, int from_tty
)
5518 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5522 stop_command (char *arg
, int from_tty
)
5524 printf_filtered (_("Specify the type of breakpoint to set.\n\
5525 Usage: stop in <function | address>\n\
5526 stop at <line>\n"));
5530 stopin_command (char *arg
, int from_tty
)
5534 if (arg
== (char *) NULL
)
5536 else if (*arg
!= '*')
5541 /* look for a ':'. If this is a line number specification, then
5542 say it is bad, otherwise, it should be an address or
5543 function/method name */
5544 while (*argptr
&& !hasColon
)
5546 hasColon
= (*argptr
== ':');
5551 badInput
= (*argptr
!= ':'); /* Not a class::method */
5553 badInput
= isdigit (*arg
); /* a simple line number */
5557 printf_filtered (_("Usage: stop in <function | address>\n"));
5559 break_command_1 (arg
, 0, from_tty
);
5563 stopat_command (char *arg
, int from_tty
)
5567 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5574 /* look for a ':'. If there is a '::' then get out, otherwise
5575 it is probably a line number. */
5576 while (*argptr
&& !hasColon
)
5578 hasColon
= (*argptr
== ':');
5583 badInput
= (*argptr
== ':'); /* we have class::method */
5585 badInput
= !isdigit (*arg
); /* not a line number */
5589 printf_filtered (_("Usage: stop at <line>\n"));
5591 break_command_1 (arg
, 0, from_tty
);
5594 /* accessflag: hw_write: watch write,
5595 hw_read: watch read,
5596 hw_access: watch access (read or write) */
5598 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5600 struct breakpoint
*b
, *scope_breakpoint
= NULL
;
5601 struct symtab_and_line sal
;
5602 struct expression
*exp
;
5603 struct block
*exp_valid_block
;
5604 struct value
*val
, *mark
;
5605 struct frame_info
*frame
;
5606 struct frame_info
*prev_frame
= NULL
;
5607 char *exp_start
= NULL
;
5608 char *exp_end
= NULL
;
5609 char *tok
, *end_tok
;
5611 char *cond_start
= NULL
;
5612 char *cond_end
= NULL
;
5613 struct expression
*cond
= NULL
;
5614 int i
, other_type_used
, target_resources_ok
= 0;
5615 enum bptype bp_type
;
5618 init_sal (&sal
); /* initialize to zeroes */
5620 /* Parse arguments. */
5621 innermost_block
= NULL
;
5623 exp
= parse_exp_1 (&arg
, 0, 0);
5625 exp_valid_block
= innermost_block
;
5626 mark
= value_mark ();
5627 val
= evaluate_expression (exp
);
5628 release_value (val
);
5629 if (value_lazy (val
))
5630 value_fetch_lazy (val
);
5633 while (*tok
== ' ' || *tok
== '\t')
5637 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5640 toklen
= end_tok
- tok
;
5641 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5643 tok
= cond_start
= end_tok
+ 1;
5644 cond
= parse_exp_1 (&tok
, 0, 0);
5648 error (_("Junk at end of command."));
5650 if (accessflag
== hw_read
)
5651 bp_type
= bp_read_watchpoint
;
5652 else if (accessflag
== hw_access
)
5653 bp_type
= bp_access_watchpoint
;
5655 bp_type
= bp_hardware_watchpoint
;
5657 mem_cnt
= can_use_hardware_watchpoint (val
);
5658 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5659 error (_("Expression cannot be implemented with read/access watchpoint."));
5662 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5663 target_resources_ok
=
5664 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5666 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5667 error (_("Target does not support this type of hardware watchpoint."));
5669 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5670 error (_("Target can only support one kind of HW watchpoint at a time."));
5673 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5674 watchpoint could not be set. */
5675 if (!mem_cnt
|| target_resources_ok
<= 0)
5676 bp_type
= bp_watchpoint
;
5678 frame
= block_innermost_frame (exp_valid_block
);
5680 prev_frame
= get_prev_frame (frame
);
5684 /* If the expression is "local", then set up a "watchpoint scope"
5685 breakpoint at the point where we've left the scope of the watchpoint
5686 expression. Create the scope breakpoint before the watchpoint, so
5687 that we will encounter it first in bpstat_stop_status. */
5688 if (innermost_block
&& prev_frame
)
5690 scope_breakpoint
= create_internal_breakpoint (get_frame_pc (prev_frame
),
5691 bp_watchpoint_scope
);
5693 scope_breakpoint
->enable_state
= bp_enabled
;
5695 /* Automatically delete the breakpoint when it hits. */
5696 scope_breakpoint
->disposition
= disp_del
;
5698 /* Only break in the proper frame (help with recursion). */
5699 scope_breakpoint
->frame_id
= get_frame_id (prev_frame
);
5701 /* Set the address at which we will stop. */
5702 scope_breakpoint
->loc
->requested_address
5703 = get_frame_pc (prev_frame
);
5704 scope_breakpoint
->loc
->address
5705 = adjust_breakpoint_address (scope_breakpoint
->loc
->requested_address
,
5706 scope_breakpoint
->type
);
5709 /* Now set up the breakpoint. */
5710 b
= set_raw_breakpoint (sal
, bp_type
);
5711 set_breakpoint_count (breakpoint_count
+ 1);
5712 b
->number
= breakpoint_count
;
5713 b
->disposition
= disp_donttouch
;
5715 b
->exp_valid_block
= exp_valid_block
;
5716 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5718 b
->loc
->cond
= cond
;
5720 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5725 b
->watchpoint_frame
= get_frame_id (frame
);
5727 b
->watchpoint_frame
= null_frame_id
;
5729 if (scope_breakpoint
!= NULL
)
5731 /* The scope breakpoint is related to the watchpoint. We will
5732 need to act on them together. */
5733 b
->related_breakpoint
= scope_breakpoint
;
5734 scope_breakpoint
->related_breakpoint
= b
;
5737 value_free_to_mark (mark
);
5741 /* Return count of locations need to be watched and can be handled
5742 in hardware. If the watchpoint can not be handled
5743 in hardware return zero. */
5746 can_use_hardware_watchpoint (struct value
*v
)
5748 int found_memory_cnt
= 0;
5749 struct value
*head
= v
;
5751 /* Did the user specifically forbid us to use hardware watchpoints? */
5752 if (!can_use_hw_watchpoints
)
5755 /* Make sure that the value of the expression depends only upon
5756 memory contents, and values computed from them within GDB. If we
5757 find any register references or function calls, we can't use a
5758 hardware watchpoint.
5760 The idea here is that evaluating an expression generates a series
5761 of values, one holding the value of every subexpression. (The
5762 expression a*b+c has five subexpressions: a, b, a*b, c, and
5763 a*b+c.) GDB's values hold almost enough information to establish
5764 the criteria given above --- they identify memory lvalues,
5765 register lvalues, computed values, etcetera. So we can evaluate
5766 the expression, and then scan the chain of values that leaves
5767 behind to decide whether we can detect any possible change to the
5768 expression's final value using only hardware watchpoints.
5770 However, I don't think that the values returned by inferior
5771 function calls are special in any way. So this function may not
5772 notice that an expression involving an inferior function call
5773 can't be watched with hardware watchpoints. FIXME. */
5774 for (; v
; v
= value_next (v
))
5776 if (VALUE_LVAL (v
) == lval_memory
)
5779 /* A lazy memory lvalue is one that GDB never needed to fetch;
5780 we either just used its address (e.g., `a' in `a.b') or
5781 we never needed it at all (e.g., `a' in `a,b'). */
5785 /* Ahh, memory we actually used! Check if we can cover
5786 it with hardware watchpoints. */
5787 struct type
*vtype
= check_typedef (value_type (v
));
5789 /* We only watch structs and arrays if user asked for it
5790 explicitly, never if they just happen to appear in a
5791 middle of some value chain. */
5793 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5794 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5796 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
5797 int len
= TYPE_LENGTH (value_type (v
));
5799 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5806 else if (VALUE_LVAL (v
) != not_lval
5807 && deprecated_value_modifiable (v
) == 0)
5808 return 0; /* ??? What does this represent? */
5809 else if (VALUE_LVAL (v
) == lval_register
)
5810 return 0; /* cannot watch a register with a HW watchpoint */
5813 /* The expression itself looks suitable for using a hardware
5814 watchpoint, but give the target machine a chance to reject it. */
5815 return found_memory_cnt
;
5819 watch_command_wrapper (char *arg
, int from_tty
)
5821 watch_command (arg
, from_tty
);
5825 watch_command (char *arg
, int from_tty
)
5827 watch_command_1 (arg
, hw_write
, from_tty
);
5831 rwatch_command_wrapper (char *arg
, int from_tty
)
5833 rwatch_command (arg
, from_tty
);
5837 rwatch_command (char *arg
, int from_tty
)
5839 watch_command_1 (arg
, hw_read
, from_tty
);
5843 awatch_command_wrapper (char *arg
, int from_tty
)
5845 awatch_command (arg
, from_tty
);
5849 awatch_command (char *arg
, int from_tty
)
5851 watch_command_1 (arg
, hw_access
, from_tty
);
5855 /* Helper routines for the until_command routine in infcmd.c. Here
5856 because it uses the mechanisms of breakpoints. */
5858 /* This function is called by fetch_inferior_event via the
5859 cmd_continuation pointer, to complete the until command. It takes
5860 care of cleaning up the temporary breakpoints set up by the until
5863 until_break_command_continuation (struct continuation_arg
*arg
)
5865 struct cleanup
*cleanups
;
5867 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5868 do_exec_cleanups (cleanups
);
5872 until_break_command (char *arg
, int from_tty
, int anywhere
)
5874 struct symtabs_and_lines sals
;
5875 struct symtab_and_line sal
;
5876 struct frame_info
*frame
= get_selected_frame (NULL
);
5877 struct frame_info
*prev_frame
= get_prev_frame (frame
);
5878 struct breakpoint
*breakpoint
;
5879 struct cleanup
*old_chain
;
5880 struct continuation_arg
*arg1
;
5883 clear_proceed_status ();
5885 /* Set a breakpoint where the user wants it and at return from
5888 if (default_breakpoint_valid
)
5889 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5890 default_breakpoint_line
, (char ***) NULL
, NULL
);
5892 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5893 0, (char ***) NULL
, NULL
);
5895 if (sals
.nelts
!= 1)
5896 error (_("Couldn't get information on specified line."));
5899 xfree (sals
.sals
); /* malloc'd, so freed */
5902 error (_("Junk at end of arguments."));
5904 resolve_sal_pc (&sal
);
5907 /* If the user told us to continue until a specified location,
5908 we don't specify a frame at which we need to stop. */
5909 breakpoint
= set_momentary_breakpoint (sal
, null_frame_id
, bp_until
);
5911 /* Otherwise, specify the current frame, because we want to stop only
5912 at the very same frame. */
5913 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
),
5916 if (!target_can_async_p ())
5917 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5919 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5921 /* If we are running asynchronously, and the target supports async
5922 execution, we are not waiting for the target to stop, in the call
5923 tp proceed, below. This means that we cannot delete the
5924 brekpoints until the target has actually stopped. The only place
5925 where we get a chance to do that is in fetch_inferior_event, so
5926 we must set things up for that. */
5928 if (target_can_async_p ())
5930 /* In this case the arg for the continuation is just the point
5931 in the exec_cleanups chain from where to start doing
5932 cleanups, because all the continuation does is the cleanups in
5933 the exec_cleanup_chain. */
5935 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
5937 arg1
->data
.pointer
= old_chain
;
5939 add_continuation (until_break_command_continuation
, arg1
);
5942 /* Keep within the current frame, or in frames called by the current
5946 sal
= find_pc_line (get_frame_pc (prev_frame
), 0);
5947 sal
.pc
= get_frame_pc (prev_frame
);
5948 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (prev_frame
),
5950 if (!target_can_async_p ())
5951 make_cleanup_delete_breakpoint (breakpoint
);
5953 make_exec_cleanup_delete_breakpoint (breakpoint
);
5956 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
5957 /* Do the cleanups now, anly if we are not running asynchronously,
5958 of if we are, but the target is still synchronous. */
5959 if (!target_can_async_p ())
5960 do_cleanups (old_chain
);
5964 ep_skip_leading_whitespace (char **s
)
5966 if ((s
== NULL
) || (*s
== NULL
))
5968 while (isspace (**s
))
5972 /* This function examines a string, and attempts to find a token
5973 that might be an event name in the leading characters. If a
5974 possible match is found, a pointer to the last character of
5975 the token is returned. Else, NULL is returned. */
5978 ep_find_event_name_end (char *arg
)
5981 char *event_name_end
= NULL
;
5983 /* If we could depend upon the presense of strrpbrk, we'd use that... */
5987 /* We break out of the loop when we find a token delimiter.
5988 Basically, we're looking for alphanumerics and underscores;
5989 anything else delimites the token. */
5992 if (!isalnum (*s
) && (*s
!= '_'))
5998 return event_name_end
;
6002 /* This function attempts to parse an optional "if <cond>" clause
6003 from the arg string. If one is not found, it returns NULL.
6005 Else, it returns a pointer to the condition string. (It does not
6006 attempt to evaluate the string against a particular block.) And,
6007 it updates arg to point to the first character following the parsed
6008 if clause in the arg string. */
6011 ep_parse_optional_if_clause (char **arg
)
6015 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
6018 /* Skip the "if" keyword. */
6021 /* Skip any extra leading whitespace, and record the start of the
6022 condition string. */
6023 ep_skip_leading_whitespace (arg
);
6026 /* Assume that the condition occupies the remainder of the arg string. */
6027 (*arg
) += strlen (cond_string
);
6032 /* This function attempts to parse an optional filename from the arg
6033 string. If one is not found, it returns NULL.
6035 Else, it returns a pointer to the parsed filename. (This function
6036 makes no attempt to verify that a file of that name exists, or is
6037 accessible.) And, it updates arg to point to the first character
6038 following the parsed filename in the arg string.
6040 Note that clients needing to preserve the returned filename for
6041 future access should copy it to their own buffers. */
6043 ep_parse_optional_filename (char **arg
)
6045 static char filename
[1024];
6050 if ((*arg_p
== '\0') || isspace (*arg_p
))
6068 /* Commands to deal with catching events, such as signals, exceptions,
6069 process start/exit, etc. */
6073 catch_fork
, catch_vfork
6078 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6081 char *cond_string
= NULL
;
6083 ep_skip_leading_whitespace (&arg
);
6085 /* The allowed syntax is:
6087 catch [v]fork if <cond>
6089 First, check if there's an if clause. */
6090 cond_string
= ep_parse_optional_if_clause (&arg
);
6092 if ((*arg
!= '\0') && !isspace (*arg
))
6093 error (_("Junk at end of arguments."));
6095 /* If this target supports it, create a fork or vfork catchpoint
6096 and enable reporting of such events. */
6100 create_fork_event_catchpoint (tempflag
, cond_string
);
6103 create_vfork_event_catchpoint (tempflag
, cond_string
);
6106 error (_("unsupported or unknown fork kind; cannot catch it"));
6112 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6114 char *cond_string
= NULL
;
6116 ep_skip_leading_whitespace (&arg
);
6118 /* The allowed syntax is:
6120 catch exec if <cond>
6122 First, check if there's an if clause. */
6123 cond_string
= ep_parse_optional_if_clause (&arg
);
6125 if ((*arg
!= '\0') && !isspace (*arg
))
6126 error (_("Junk at end of arguments."));
6128 /* If this target supports it, create an exec catchpoint
6129 and enable reporting of such events. */
6130 create_exec_event_catchpoint (tempflag
, cond_string
);
6134 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6136 char *dll_pathname
= NULL
;
6137 char *cond_string
= NULL
;
6139 ep_skip_leading_whitespace (&arg
);
6141 /* The allowed syntax is:
6143 catch load if <cond>
6144 catch load <filename>
6145 catch load <filename> if <cond>
6147 The user is not allowed to specify the <filename> after an
6150 We'll ignore the pathological case of a file named "if".
6152 First, check if there's an if clause. If so, then there
6153 cannot be a filename. */
6154 cond_string
= ep_parse_optional_if_clause (&arg
);
6156 /* If there was an if clause, then there cannot be a filename.
6157 Else, there might be a filename and an if clause. */
6158 if (cond_string
== NULL
)
6160 dll_pathname
= ep_parse_optional_filename (&arg
);
6161 ep_skip_leading_whitespace (&arg
);
6162 cond_string
= ep_parse_optional_if_clause (&arg
);
6165 if ((*arg
!= '\0') && !isspace (*arg
))
6166 error (_("Junk at end of arguments."));
6168 /* Create a load breakpoint that only triggers when a load of
6169 the specified dll (or any dll, if no pathname was specified)
6171 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6172 dll_pathname
, cond_string
);
6176 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6178 char *dll_pathname
= NULL
;
6179 char *cond_string
= NULL
;
6181 ep_skip_leading_whitespace (&arg
);
6183 /* The allowed syntax is:
6185 catch unload if <cond>
6186 catch unload <filename>
6187 catch unload <filename> if <cond>
6189 The user is not allowed to specify the <filename> after an
6192 We'll ignore the pathological case of a file named "if".
6194 First, check if there's an if clause. If so, then there
6195 cannot be a filename. */
6196 cond_string
= ep_parse_optional_if_clause (&arg
);
6198 /* If there was an if clause, then there cannot be a filename.
6199 Else, there might be a filename and an if clause. */
6200 if (cond_string
== NULL
)
6202 dll_pathname
= ep_parse_optional_filename (&arg
);
6203 ep_skip_leading_whitespace (&arg
);
6204 cond_string
= ep_parse_optional_if_clause (&arg
);
6207 if ((*arg
!= '\0') && !isspace (*arg
))
6208 error (_("Junk at end of arguments."));
6210 /* Create an unload breakpoint that only triggers when an unload of
6211 the specified dll (or any dll, if no pathname was specified)
6213 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6214 dll_pathname
, cond_string
);
6217 static enum print_stop_action
6218 print_exception_catchpoint (struct breakpoint
*b
)
6220 annotate_catchpoint (b
->number
);
6222 if (strstr (b
->addr_string
, "throw") != NULL
)
6223 printf_filtered (_("\nCatchpoint %d (exception thrown)\n"),
6226 printf_filtered (_("\nCatchpoint %d (exception caught)\n"),
6229 return PRINT_SRC_AND_LOC
;
6233 print_one_exception_catchpoint (struct breakpoint
*b
, CORE_ADDR
*last_addr
)
6238 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
6241 *last_addr
= b
->loc
->address
;
6242 if (strstr (b
->addr_string
, "throw") != NULL
)
6243 ui_out_field_string (uiout
, "what", "exception throw");
6245 ui_out_field_string (uiout
, "what", "exception catch");
6249 print_mention_exception_catchpoint (struct breakpoint
*b
)
6251 if (strstr (b
->addr_string
, "throw") != NULL
)
6252 printf_filtered (_("Catchpoint %d (throw)"), b
->number
);
6254 printf_filtered (_("Catchpoint %d (catch)"), b
->number
);
6257 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops
= {
6258 print_exception_catchpoint
,
6259 print_one_exception_catchpoint
,
6260 print_mention_exception_catchpoint
6264 handle_gnu_v3_exceptions (int tempflag
, char *cond_string
,
6265 enum exception_event_kind ex_event
, int from_tty
)
6267 char *trigger_func_name
, *nameptr
;
6268 struct symtabs_and_lines sals
;
6269 struct breakpoint
*b
;
6271 if (ex_event
== EX_EVENT_CATCH
)
6272 trigger_func_name
= xstrdup ("__cxa_begin_catch");
6274 trigger_func_name
= xstrdup ("__cxa_throw");
6276 nameptr
= trigger_func_name
;
6277 sals
= decode_line_1 (&nameptr
, 1, NULL
, 0, NULL
, NULL
);
6278 if (sals
.nelts
== 0)
6280 xfree (trigger_func_name
);
6284 b
= set_raw_breakpoint (sals
.sals
[0], bp_breakpoint
);
6285 set_breakpoint_count (breakpoint_count
+ 1);
6286 b
->number
= breakpoint_count
;
6287 b
->cond_string
= (cond_string
== NULL
) ?
6288 NULL
: savestring (cond_string
, strlen (cond_string
));
6290 b
->addr_string
= trigger_func_name
;
6291 b
->enable_state
= bp_enabled
;
6292 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6293 b
->ops
= &gnu_v3_exception_catchpoint_ops
;
6300 /* Deal with "catch catch" and "catch throw" commands */
6303 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6304 int tempflag
, int from_tty
)
6306 char *cond_string
= NULL
;
6307 struct symtab_and_line
*sal
= NULL
;
6309 ep_skip_leading_whitespace (&arg
);
6311 cond_string
= ep_parse_optional_if_clause (&arg
);
6313 if ((*arg
!= '\0') && !isspace (*arg
))
6314 error (_("Junk at end of arguments."));
6316 if ((ex_event
!= EX_EVENT_THROW
) &&
6317 (ex_event
!= EX_EVENT_CATCH
))
6318 error (_("Unsupported or unknown exception event; cannot catch it"));
6320 if (handle_gnu_v3_exceptions (tempflag
, cond_string
, ex_event
, from_tty
))
6323 warning (_("Unsupported with this platform/compiler combination."));
6326 /* Create a breakpoint struct for Ada exception catchpoints. */
6329 create_ada_exception_breakpoint (struct symtab_and_line sal
,
6333 struct expression
*cond
,
6334 struct breakpoint_ops
*ops
,
6338 struct breakpoint
*b
;
6342 describe_other_breakpoints (sal
.pc
, sal
.section
, -1);
6343 /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
6344 version for exception catchpoints, because two catchpoints
6345 used for different exception names will use the same address.
6346 In this case, a "breakpoint ... also set at..." warning is
6347 unproductive. Besides. the warning phrasing is also a bit
6348 inapropriate, we should use the word catchpoint, and tell
6349 the user what type of catchpoint it is. The above is good
6350 enough for now, though. */
6353 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6354 set_breakpoint_count (breakpoint_count
+ 1);
6356 b
->enable_state
= bp_enabled
;
6357 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6358 b
->number
= breakpoint_count
;
6359 b
->ignore_count
= 0;
6360 b
->loc
->cond
= cond
;
6361 b
->addr_string
= addr_string
;
6362 b
->language
= language_ada
;
6363 b
->cond_string
= cond_string
;
6364 b
->exp_string
= exp_string
;
6371 /* Implement the "catch exception" command. */
6374 catch_ada_exception_command (char *arg
, int tempflag
, int from_tty
)
6376 struct symtab_and_line sal
;
6378 char *addr_string
= NULL
;
6379 char *exp_string
= NULL
;
6380 char *cond_string
= NULL
;
6381 struct expression
*cond
= NULL
;
6382 struct breakpoint_ops
*ops
= NULL
;
6384 sal
= ada_decode_exception_location (arg
, &addr_string
, &exp_string
,
6385 &cond_string
, &cond
, &ops
);
6386 create_ada_exception_breakpoint (sal
, addr_string
, exp_string
,
6387 cond_string
, cond
, ops
, tempflag
,
6391 /* Implement the "catch assert" command. */
6394 catch_assert_command (char *arg
, int tempflag
, int from_tty
)
6396 struct symtab_and_line sal
;
6397 char *addr_string
= NULL
;
6398 struct breakpoint_ops
*ops
= NULL
;
6400 sal
= ada_decode_assert_location (arg
, &addr_string
, &ops
);
6401 create_ada_exception_breakpoint (sal
, addr_string
, NULL
, NULL
, NULL
, ops
,
6402 tempflag
, from_tty
);
6406 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6409 /* The first argument may be an event name, such as "start" or "load".
6410 If so, then handle it as such. If it doesn't match an event name,
6411 then attempt to interpret it as an exception name. (This latter is
6412 the v4.16-and-earlier GDB meaning of the "catch" command.)
6414 First, try to find the bounds of what might be an event name. */
6415 char *arg1_start
= arg
;
6419 if (arg1_start
== NULL
)
6421 /* Old behaviour was to use pre-v-4.16 syntax */
6422 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6424 /* Now, this is not allowed */
6425 error (_("Catch requires an event name."));
6428 arg1_end
= ep_find_event_name_end (arg1_start
);
6429 if (arg1_end
== NULL
)
6430 error (_("catch requires an event"));
6431 arg1_length
= arg1_end
+ 1 - arg1_start
;
6433 /* Try to match what we found against known event names. */
6434 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6436 error (_("Catch of signal not yet implemented"));
6438 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6440 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6441 tempflag
, from_tty
);
6443 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6445 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6446 tempflag
, from_tty
);
6448 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6450 error (_("Catch of thread_start not yet implemented"));
6452 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6454 error (_("Catch of thread_exit not yet implemented"));
6456 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6458 error (_("Catch of thread_join not yet implemented"));
6460 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6462 error (_("Catch of start not yet implemented"));
6464 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6466 error (_("Catch of exit not yet implemented"));
6468 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6470 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6472 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6474 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6476 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6478 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6480 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6482 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6484 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6486 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6488 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6490 error (_("Catch of stop not yet implemented"));
6492 else if (strncmp (arg1_start
, "exception", arg1_length
) == 0)
6494 catch_ada_exception_command (arg1_end
+ 1, tempflag
, from_tty
);
6497 else if (strncmp (arg1_start
, "assert", arg1_length
) == 0)
6499 catch_assert_command (arg1_end
+ 1, tempflag
, from_tty
);
6502 /* This doesn't appear to be an event name */
6506 /* Pre-v.4.16 behaviour was to treat the argument
6507 as the name of an exception */
6508 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6509 /* Now this is not allowed */
6510 error (_("Unknown event kind specified for catch"));
6516 catch_command (char *arg
, int from_tty
)
6518 catch_command_1 (arg
, 0, from_tty
);
6523 tcatch_command (char *arg
, int from_tty
)
6525 catch_command_1 (arg
, 1, from_tty
);
6528 /* Delete breakpoints by address or line. */
6531 clear_command (char *arg
, int from_tty
)
6533 struct breakpoint
*b
;
6534 VEC(breakpoint_p
) *found
= 0;
6537 struct symtabs_and_lines sals
;
6538 struct symtab_and_line sal
;
6543 sals
= decode_line_spec (arg
, 1);
6548 sals
.sals
= (struct symtab_and_line
*)
6549 xmalloc (sizeof (struct symtab_and_line
));
6550 make_cleanup (xfree
, sals
.sals
);
6551 init_sal (&sal
); /* initialize to zeroes */
6552 sal
.line
= default_breakpoint_line
;
6553 sal
.symtab
= default_breakpoint_symtab
;
6554 sal
.pc
= default_breakpoint_address
;
6555 if (sal
.symtab
== 0)
6556 error (_("No source file specified."));
6564 /* We don't call resolve_sal_pc here. That's not
6565 as bad as it seems, because all existing breakpoints
6566 typically have both file/line and pc set. So, if
6567 clear is given file/line, we can match this to existing
6568 breakpoint without obtaining pc at all.
6570 We only support clearing given the address explicitly
6571 present in breakpoint table. Say, we've set breakpoint
6572 at file:line. There were several PC values for that file:line,
6573 due to optimization, all in one block.
6574 We've picked one PC value. If "clear" is issued with another
6575 PC corresponding to the same file:line, the breakpoint won't
6576 be cleared. We probably can still clear the breakpoint, but
6577 since the other PC value is never presented to user, user
6578 can only find it by guessing, and it does not seem important
6581 /* For each line spec given, delete bps which correspond
6582 to it. Do it in two passes, solely to preserve the current
6583 behavior that from_tty is forced true if we delete more than
6587 for (i
= 0; i
< sals
.nelts
; i
++)
6589 /* If exact pc given, clear bpts at that pc.
6590 If line given (pc == 0), clear all bpts on specified line.
6591 If defaulting, clear all bpts on default line
6594 defaulting sal.pc != 0 tests to do
6599 1 0 <can't happen> */
6603 /* Find all matching breakpoints and add them to
6608 /* Are we going to delete b? */
6609 if (b
->type
!= bp_none
6610 && b
->type
!= bp_watchpoint
6611 && b
->type
!= bp_hardware_watchpoint
6612 && b
->type
!= bp_read_watchpoint
6613 && b
->type
!= bp_access_watchpoint
)
6615 struct bp_location
*loc
= b
->loc
;
6616 for (; loc
; loc
= loc
->next
)
6618 int pc_match
= sal
.pc
6619 && (loc
->address
== sal
.pc
)
6620 && (!section_is_overlay (loc
->section
)
6621 || loc
->section
== sal
.section
);
6622 int line_match
= ((default_match
|| (0 == sal
.pc
))
6623 && b
->source_file
!= NULL
6624 && sal
.symtab
!= NULL
6625 && strcmp (b
->source_file
, sal
.symtab
->filename
) == 0
6626 && b
->line_number
== sal
.line
);
6627 if (pc_match
|| line_match
)
6636 VEC_safe_push(breakpoint_p
, found
, b
);
6639 /* Now go thru the 'found' chain and delete them. */
6640 if (VEC_empty(breakpoint_p
, found
))
6643 error (_("No breakpoint at %s."), arg
);
6645 error (_("No breakpoint at this line."));
6648 if (VEC_length(breakpoint_p
, found
) > 1)
6649 from_tty
= 1; /* Always report if deleted more than one */
6652 if (VEC_length(breakpoint_p
, found
) == 1)
6653 printf_unfiltered (_("Deleted breakpoint "));
6655 printf_unfiltered (_("Deleted breakpoints "));
6657 breakpoints_changed ();
6659 for (ix
= 0; VEC_iterate(breakpoint_p
, found
, ix
, b
); ix
++)
6662 printf_unfiltered ("%d ", b
->number
);
6663 delete_breakpoint (b
);
6666 putchar_unfiltered ('\n');
6669 /* Delete breakpoint in BS if they are `delete' breakpoints and
6670 all breakpoints that are marked for deletion, whether hit or not.
6671 This is called after any breakpoint is hit, or after errors. */
6674 breakpoint_auto_delete (bpstat bs
)
6676 struct breakpoint
*b
, *temp
;
6678 for (; bs
; bs
= bs
->next
)
6679 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
->disposition
== disp_del
6681 delete_breakpoint (bs
->breakpoint_at
->owner
);
6683 ALL_BREAKPOINTS_SAFE (b
, temp
)
6685 if (b
->disposition
== disp_del_at_next_stop
)
6686 delete_breakpoint (b
);
6690 /* Remove locations of breakpoint BPT from
6691 the global list of breakpoint locations. */
6694 unlink_locations_from_global_list (struct breakpoint
*bpt
)
6696 /* This code assumes that the locations
6697 of a breakpoint are found in the global list
6698 in the same order, but not necessary adjacent. */
6699 struct bp_location
**tmp
= &bp_location_chain
;
6700 struct bp_location
*here
= bpt
->loc
;
6705 for (; *tmp
&& here
;)
6709 *tmp
= here
->global_next
;
6714 tmp
= &((*tmp
)->global_next
);
6719 /* Delete a breakpoint and clean up all traces of it in the data
6723 delete_breakpoint (struct breakpoint
*bpt
)
6725 struct breakpoint
*b
;
6727 struct bp_location
*loc
;
6729 gdb_assert (bpt
!= NULL
);
6731 /* Has this bp already been deleted? This can happen because multiple
6732 lists can hold pointers to bp's. bpstat lists are especial culprits.
6734 One example of this happening is a watchpoint's scope bp. When the
6735 scope bp triggers, we notice that the watchpoint is out of scope, and
6736 delete it. We also delete its scope bp. But the scope bp is marked
6737 "auto-deleting", and is already on a bpstat. That bpstat is then
6738 checked for auto-deleting bp's, which are deleted.
6740 A real solution to this problem might involve reference counts in bp's,
6741 and/or giving them pointers back to their referencing bpstat's, and
6742 teaching delete_breakpoint to only free a bp's storage when no more
6743 references were extent. A cheaper bandaid was chosen. */
6744 if (bpt
->type
== bp_none
)
6747 if (deprecated_delete_breakpoint_hook
)
6748 deprecated_delete_breakpoint_hook (bpt
);
6749 breakpoint_delete_event (bpt
->number
);
6751 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6754 remove_breakpoint (loc
, mark_inserted
);
6756 free_valchain (loc
);
6761 if (loc
->function_name
)
6762 xfree (loc
->function_name
);
6765 if (breakpoint_chain
== bpt
)
6766 breakpoint_chain
= bpt
->next
;
6771 b
->next
= bpt
->next
;
6775 unlink_locations_from_global_list (bpt
);
6777 check_duplicates (bpt
);
6779 if (bpt
->type
!= bp_hardware_watchpoint
6780 && bpt
->type
!= bp_read_watchpoint
6781 && bpt
->type
!= bp_access_watchpoint
6782 && bpt
->type
!= bp_catch_fork
6783 && bpt
->type
!= bp_catch_vfork
6784 && bpt
->type
!= bp_catch_exec
)
6785 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6787 /* If this breakpoint location was inserted, and there is
6788 another breakpoint at the same address, we need to
6789 insert the other breakpoint. */
6792 struct bp_location
*loc2
;
6793 ALL_BP_LOCATIONS (loc2
)
6794 if (loc2
->address
== loc
->address
6795 && loc2
->section
== loc
->section
6797 && loc2
->owner
->enable_state
!= bp_disabled
6799 && !loc2
->shlib_disabled
6800 && loc2
->owner
->enable_state
!= bp_call_disabled
)
6804 /* We should never reach this point if there is a permanent
6805 breakpoint at the same address as the one being deleted.
6806 If there is a permanent breakpoint somewhere, it should
6807 always be the only one inserted. */
6808 if (loc2
->owner
->enable_state
== bp_permanent
)
6809 internal_error (__FILE__
, __LINE__
,
6810 _("another breakpoint was inserted on top of "
6811 "a permanent breakpoint"));
6813 memset (&loc2
->target_info
, 0, sizeof (loc2
->target_info
));
6814 loc2
->target_info
.placed_address
= loc2
->address
;
6815 if (b
->type
== bp_hardware_breakpoint
)
6816 val
= target_insert_hw_breakpoint (&loc2
->target_info
);
6818 val
= target_insert_breakpoint (&loc2
->target_info
);
6820 /* If there was an error in the insert, print a message, then stop execution. */
6823 struct ui_file
*tmp_error_stream
= mem_fileopen ();
6824 make_cleanup_ui_file_delete (tmp_error_stream
);
6827 if (b
->type
== bp_hardware_breakpoint
)
6829 fprintf_unfiltered (tmp_error_stream
,
6830 "Cannot insert hardware breakpoint %d.\n"
6831 "You may have requested too many hardware breakpoints.\n",
6836 fprintf_unfiltered (tmp_error_stream
, "Cannot insert breakpoint %d.\n", b
->number
);
6837 fprintf_filtered (tmp_error_stream
, "Error accessing memory address ");
6838 deprecated_print_address_numeric (loc2
->address
, 1, tmp_error_stream
);
6839 fprintf_filtered (tmp_error_stream
, ": %s.\n",
6840 safe_strerror (val
));
6843 fprintf_unfiltered (tmp_error_stream
,"The same program may be running in another process.");
6844 target_terminal_ours_for_output ();
6845 error_stream(tmp_error_stream
);
6853 free_command_lines (&bpt
->commands
);
6854 if (bpt
->cond_string
!= NULL
)
6855 xfree (bpt
->cond_string
);
6856 if (bpt
->addr_string
!= NULL
)
6857 xfree (bpt
->addr_string
);
6858 if (bpt
->exp
!= NULL
)
6860 if (bpt
->exp_string
!= NULL
)
6861 xfree (bpt
->exp_string
);
6862 if (bpt
->val
!= NULL
)
6863 value_free (bpt
->val
);
6864 if (bpt
->source_file
!= NULL
)
6865 xfree (bpt
->source_file
);
6866 if (bpt
->dll_pathname
!= NULL
)
6867 xfree (bpt
->dll_pathname
);
6868 if (bpt
->triggered_dll_pathname
!= NULL
)
6869 xfree (bpt
->triggered_dll_pathname
);
6870 if (bpt
->exec_pathname
!= NULL
)
6871 xfree (bpt
->exec_pathname
);
6873 /* Be sure no bpstat's are pointing at it after it's been freed. */
6874 /* FIXME, how can we find all bpstat's?
6875 We just check stop_bpstat for now. Note that we cannot just
6876 remove bpstats pointing at bpt from the stop_bpstat list
6877 entirely, as breakpoint commands are associated with the bpstat;
6878 if we remove it here, then the later call to
6879 bpstat_do_actions (&stop_bpstat);
6880 in event-top.c won't do anything, and temporary breakpoints
6881 with commands won't work. */
6882 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6883 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
== bpt
)
6885 bs
->breakpoint_at
= NULL
;
6887 /* bs->commands will be freed later. */
6889 /* On the chance that someone will soon try again to delete this same
6890 bp, we mark it as deleted before freeing its storage. */
6891 bpt
->type
= bp_none
;
6893 for (loc
= bpt
->loc
; loc
;)
6895 struct bp_location
*loc_next
= loc
->next
;
6903 do_delete_breakpoint_cleanup (void *b
)
6905 delete_breakpoint (b
);
6909 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6911 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6915 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6917 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6921 delete_command (char *arg
, int from_tty
)
6923 struct breakpoint
*b
, *temp
;
6929 int breaks_to_delete
= 0;
6931 /* Delete all breakpoints if no argument.
6932 Do not delete internal or call-dummy breakpoints, these
6933 have to be deleted with an explicit breakpoint number argument. */
6936 if (b
->type
!= bp_call_dummy
&&
6937 b
->type
!= bp_shlib_event
&&
6938 b
->type
!= bp_thread_event
&&
6939 b
->type
!= bp_overlay_event
&&
6942 breaks_to_delete
= 1;
6947 /* Ask user only if there are some breakpoints to delete. */
6949 || (breaks_to_delete
&& query (_("Delete all breakpoints? "))))
6951 ALL_BREAKPOINTS_SAFE (b
, temp
)
6953 if (b
->type
!= bp_call_dummy
&&
6954 b
->type
!= bp_shlib_event
&&
6955 b
->type
!= bp_thread_event
&&
6956 b
->type
!= bp_overlay_event
&&
6958 delete_breakpoint (b
);
6963 map_breakpoint_numbers (arg
, delete_breakpoint
);
6967 all_locations_are_pending (struct bp_location
*loc
)
6969 for (; loc
; loc
= loc
->next
)
6970 if (!loc
->shlib_disabled
)
6976 update_breakpoint_locations (struct breakpoint
*b
,
6977 struct symtabs_and_lines sals
)
6981 struct bp_location
*existing_locations
= b
->loc
;
6983 /* If there's no new locations, and all existing locations
6984 are pending, don't do anything. This optimizes
6985 the common case where all locations are in the same
6986 shared library, that was unloaded. We'd like to
6987 retain the location, so that when the library
6988 is loaded again, we don't loose the enabled/disabled
6989 status of the individual locations. */
6990 if (all_locations_are_pending (existing_locations
) && sals
.nelts
== 0)
6993 unlink_locations_from_global_list (b
);
6996 for (i
= 0; i
< sals
.nelts
; ++i
)
6998 struct bp_location
*new_loc
=
6999 add_location_to_breakpoint (b
, b
->type
, &(sals
.sals
[i
]));
7001 /* Reparse conditions, they might contain references to the
7003 if (b
->cond_string
!= NULL
)
7005 struct gdb_exception e
;
7008 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7010 new_loc
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
),
7015 warning (_("failed to reevaluate condition for breakpoint %d: %s"),
7016 b
->number
, e
.message
);
7017 new_loc
->enabled
= 0;
7021 if (b
->source_file
!= NULL
)
7022 xfree (b
->source_file
);
7023 if (sals
.sals
[i
].symtab
== NULL
)
7024 b
->source_file
= NULL
;
7027 savestring (sals
.sals
[i
].symtab
->filename
,
7028 strlen (sals
.sals
[i
].symtab
->filename
));
7030 if (b
->line_number
== 0)
7031 b
->line_number
= sals
.sals
[i
].line
;
7034 /* If possible, carry over 'disable' status from existing breakpoints. */
7036 struct bp_location
*e
= existing_locations
;
7037 for (; e
; e
= e
->next
)
7039 if (!e
->enabled
&& e
->function_name
)
7041 struct bp_location
*l
= b
->loc
;
7042 for (; l
; l
= l
->next
)
7043 if (l
->function_name
7044 && strcmp (e
->function_name
, l
->function_name
) == 0)
7053 while (existing_locations
)
7055 struct bp_location
*next
= existing_locations
->next
;
7056 free_bp_location (existing_locations
);
7057 existing_locations
= next
;
7062 /* Reset a breakpoint given it's struct breakpoint * BINT.
7063 The value we return ends up being the return value from catch_errors.
7064 Unused in this case. */
7067 breakpoint_re_set_one (void *bint
)
7069 /* get past catch_errs */
7070 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7074 int *not_found_ptr
= ¬_found
;
7075 struct symtabs_and_lines sals
= {};
7076 struct symtabs_and_lines expanded
;
7078 enum enable_state save_enable
;
7079 struct gdb_exception e
;
7085 warning (_("attempted to reset apparently deleted breakpoint #%d?"),
7089 case bp_hardware_breakpoint
:
7091 case bp_catch_unload
:
7092 if (b
->addr_string
== NULL
)
7094 /* Anything without a string can't be re-set. */
7095 delete_breakpoint (b
);
7099 set_language (b
->language
);
7100 input_radix
= b
->input_radix
;
7102 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7104 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
,
7109 int not_found_and_ok
= 0;
7110 /* For pending breakpoints, it's expected that parsing
7111 will fail until the right shared library is loaded.
7112 User has already told to create pending breakpoints and
7113 don't need extra messages. If breakpoint is in bp_shlib_disabled
7114 state, then user already saw the message about that breakpoint
7115 being disabled, and don't want to see more errors. */
7117 && (b
->condition_not_parsed
7118 || (b
->loc
&& b
->loc
->shlib_disabled
)
7119 || b
->enable_state
== bp_disabled
))
7120 not_found_and_ok
= 1;
7122 if (!not_found_and_ok
)
7124 /* We surely don't want to warn about the same breakpoint
7125 10 times. One solution, implemented here, is disable
7126 the breakpoint on error. Another solution would be to
7127 have separate 'warning emitted' flag. Since this
7128 happens only when a binary has changed, I don't know
7129 which approach is better. */
7130 b
->enable_state
= bp_disabled
;
7131 throw_exception (e
);
7138 gdb_assert (sals
.nelts
== 1);
7139 resolve_sal_pc (&sals
.sals
[0]);
7140 if (b
->condition_not_parsed
&& s
&& s
[0])
7142 char *cond_string
= 0;
7144 find_condition_and_thread (s
, sals
.sals
[0].pc
,
7145 &cond_string
, &thread
);
7147 b
->cond_string
= cond_string
;
7149 b
->condition_not_parsed
= 0;
7151 expanded
= expand_line_sal_maybe (sals
.sals
[0]);
7152 update_breakpoint_locations (b
, expanded
);
7154 /* Now that this is re-enabled, check_duplicates
7156 check_duplicates (b
);
7162 case bp_hardware_watchpoint
:
7163 case bp_read_watchpoint
:
7164 case bp_access_watchpoint
:
7165 innermost_block
= NULL
;
7166 /* The issue arises of what context to evaluate this in. The
7167 same one as when it was set, but what does that mean when
7168 symbols have been re-read? We could save the filename and
7169 functionname, but if the context is more local than that, the
7170 best we could do would be something like how many levels deep
7171 and which index at that particular level, but that's going to
7172 be less stable than filenames or function names. */
7174 /* So for now, just use a global context. */
7178 /* Avoid re-freeing b->exp if an error during the call to
7179 parse_expression. */
7182 b
->exp
= parse_expression (b
->exp_string
);
7183 b
->exp_valid_block
= innermost_block
;
7184 mark
= value_mark ();
7187 value_free (b
->val
);
7188 /* Avoid re-freeing b->val if an error during the call to
7189 evaluate_expression. */
7192 b
->val
= evaluate_expression (b
->exp
);
7193 release_value (b
->val
);
7194 if (value_lazy (b
->val
) && breakpoint_enabled (b
))
7195 value_fetch_lazy (b
->val
);
7197 if (b
->cond_string
!= NULL
)
7202 xfree (b
->loc
->cond
);
7203 /* Avoid re-freeing b->exp if an error during the call
7205 b
->loc
->cond
= NULL
;
7207 b
->loc
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7209 if (breakpoint_enabled (b
))
7211 value_free_to_mark (mark
);
7213 /* We needn't really do anything to reset these, since the mask
7214 that requests them is unaffected by e.g., new libraries being
7217 case bp_catch_vfork
:
7222 printf_filtered (_("Deleting unknown breakpoint type %d\n"), b
->type
);
7224 /* Delete longjmp and overlay event breakpoints; they will be
7225 reset later by breakpoint_re_set. */
7227 case bp_longjmp_resume
:
7228 case bp_overlay_event
:
7229 delete_breakpoint (b
);
7232 /* This breakpoint is special, it's set up when the inferior
7233 starts and we really don't want to touch it. */
7234 case bp_shlib_event
:
7236 /* Like bp_shlib_event, this breakpoint type is special.
7237 Once it is set up, we do not want to touch it. */
7238 case bp_thread_event
:
7240 /* Keep temporary breakpoints, which can be encountered when we step
7241 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7242 Otherwise these should have been blown away via the cleanup chain
7243 or by breakpoint_init_inferior when we rerun the executable. */
7246 case bp_watchpoint_scope
:
7248 case bp_step_resume
:
7255 /* Re-set all breakpoints after symbols have been re-loaded. */
7257 breakpoint_re_set (void)
7259 struct breakpoint
*b
, *temp
;
7260 enum language save_language
;
7261 int save_input_radix
;
7263 save_language
= current_language
->la_language
;
7264 save_input_radix
= input_radix
;
7265 ALL_BREAKPOINTS_SAFE (b
, temp
)
7267 /* Format possible error msg */
7268 char *message
= xstrprintf ("Error in re-setting breakpoint %d: ",
7270 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7271 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7272 do_cleanups (cleanups
);
7274 set_language (save_language
);
7275 input_radix
= save_input_radix
;
7277 if (gdbarch_get_longjmp_target_p (current_gdbarch
))
7279 create_longjmp_breakpoint ("longjmp");
7280 create_longjmp_breakpoint ("_longjmp");
7281 create_longjmp_breakpoint ("siglongjmp");
7282 create_longjmp_breakpoint ("_siglongjmp");
7283 create_longjmp_breakpoint (NULL
);
7286 create_overlay_event_breakpoint ("_ovly_debug_event");
7289 /* Reset the thread number of this breakpoint:
7291 - If the breakpoint is for all threads, leave it as-is.
7292 - Else, reset it to the current thread for inferior_ptid. */
7294 breakpoint_re_set_thread (struct breakpoint
*b
)
7296 if (b
->thread
!= -1)
7298 if (in_thread_list (inferior_ptid
))
7299 b
->thread
= pid_to_thread_id (inferior_ptid
);
7303 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7304 If from_tty is nonzero, it prints a message to that effect,
7305 which ends with a period (no newline). */
7308 set_ignore_count (int bptnum
, int count
, int from_tty
)
7310 struct breakpoint
*b
;
7316 if (b
->number
== bptnum
)
7318 b
->ignore_count
= count
;
7322 printf_filtered (_("Will stop next time breakpoint %d is reached."),
7324 else if (count
== 1)
7325 printf_filtered (_("Will ignore next crossing of breakpoint %d."),
7328 printf_filtered (_("Will ignore next %d crossings of breakpoint %d."),
7331 breakpoints_changed ();
7332 breakpoint_modify_event (b
->number
);
7336 error (_("No breakpoint number %d."), bptnum
);
7339 /* Clear the ignore counts of all breakpoints. */
7341 breakpoint_clear_ignore_counts (void)
7343 struct breakpoint
*b
;
7346 b
->ignore_count
= 0;
7349 /* Command to set ignore-count of breakpoint N to COUNT. */
7352 ignore_command (char *args
, int from_tty
)
7358 error_no_arg (_("a breakpoint number"));
7360 num
= get_number (&p
);
7362 error (_("bad breakpoint number: '%s'"), args
);
7364 error (_("Second argument (specified ignore-count) is missing."));
7366 set_ignore_count (num
,
7367 longest_to_int (value_as_long (parse_and_eval (p
))),
7370 printf_filtered ("\n");
7373 /* Call FUNCTION on each of the breakpoints
7374 whose numbers are given in ARGS. */
7377 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7382 struct breakpoint
*b
, *tmp
;
7386 error_no_arg (_("one or more breakpoint numbers"));
7393 num
= get_number_or_range (&p1
);
7396 warning (_("bad breakpoint number at or near '%s'"), p
);
7400 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7401 if (b
->number
== num
)
7403 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7406 if (related_breakpoint
)
7407 function (related_breakpoint
);
7411 printf_unfiltered (_("No breakpoint number %d.\n"), num
);
7417 static struct bp_location
*
7418 find_location_by_number (char *number
)
7420 char *dot
= strchr (number
, '.');
7424 struct breakpoint
*b
;
7425 struct bp_location
*loc
;
7430 bp_num
= get_number_or_range (&p1
);
7432 error (_("Bad breakpoint number '%s'"), number
);
7435 if (b
->number
== bp_num
)
7440 if (!b
|| b
->number
!= bp_num
)
7441 error (_("Bad breakpoint number '%s'"), number
);
7444 loc_num
= get_number_or_range (&p1
);
7446 error (_("Bad breakpoint location number '%s'"), number
);
7450 for (;loc_num
&& loc
; --loc_num
, loc
= loc
->next
)
7453 error (_("Bad breakpoint location number '%s'"), dot
+1);
7459 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7460 If from_tty is nonzero, it prints a message to that effect,
7461 which ends with a period (no newline). */
7464 disable_breakpoint (struct breakpoint
*bpt
)
7466 /* Never disable a watchpoint scope breakpoint; we want to
7467 hit them when we leave scope so we can delete both the
7468 watchpoint and its scope breakpoint at that time. */
7469 if (bpt
->type
== bp_watchpoint_scope
)
7472 /* You can't disable permanent breakpoints. */
7473 if (bpt
->enable_state
== bp_permanent
)
7476 bpt
->enable_state
= bp_disabled
;
7478 check_duplicates (bpt
);
7480 if (deprecated_modify_breakpoint_hook
)
7481 deprecated_modify_breakpoint_hook (bpt
);
7482 breakpoint_modify_event (bpt
->number
);
7486 disable_command (char *args
, int from_tty
)
7488 struct breakpoint
*bpt
;
7490 ALL_BREAKPOINTS (bpt
)
7494 warning (_("attempted to disable apparently deleted breakpoint #%d?"),
7499 case bp_catch_unload
:
7501 case bp_catch_vfork
:
7503 case bp_hardware_breakpoint
:
7505 case bp_hardware_watchpoint
:
7506 case bp_read_watchpoint
:
7507 case bp_access_watchpoint
:
7508 disable_breakpoint (bpt
);
7512 else if (strchr (args
, '.'))
7514 struct bp_location
*loc
= find_location_by_number (args
);
7517 check_duplicates (loc
->owner
);
7520 map_breakpoint_numbers (args
, disable_breakpoint
);
7524 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7526 int target_resources_ok
, other_type_used
;
7529 if (bpt
->type
== bp_hardware_breakpoint
)
7532 i
= hw_breakpoint_used_count ();
7533 target_resources_ok
=
7534 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7536 if (target_resources_ok
== 0)
7537 error (_("No hardware breakpoint support in the target."));
7538 else if (target_resources_ok
< 0)
7539 error (_("Hardware breakpoints used exceeds limit."));
7542 if (bpt
->type
== bp_watchpoint
||
7543 bpt
->type
== bp_hardware_watchpoint
||
7544 bpt
->type
== bp_read_watchpoint
||
7545 bpt
->type
== bp_access_watchpoint
)
7547 struct frame_id saved_frame_id
;
7549 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
7550 if (bpt
->exp_valid_block
!= NULL
)
7552 struct frame_info
*fr
=
7553 fr
= frame_find_by_id (bpt
->watchpoint_frame
);
7556 printf_filtered (_("\
7557 Cannot enable watchpoint %d because the block in which its expression\n\
7558 is valid is not currently in scope.\n"), bpt
->number
);
7565 value_free (bpt
->val
);
7566 mark
= value_mark ();
7567 bpt
->val
= evaluate_expression (bpt
->exp
);
7568 release_value (bpt
->val
);
7569 if (value_lazy (bpt
->val
))
7570 value_fetch_lazy (bpt
->val
);
7572 if (bpt
->type
== bp_hardware_watchpoint
||
7573 bpt
->type
== bp_read_watchpoint
||
7574 bpt
->type
== bp_access_watchpoint
)
7576 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7577 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7579 /* Hack around 'unused var' error for some targets here */
7580 (void) mem_cnt
, (void) i
;
7581 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7582 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7583 /* we can consider of type is bp_hardware_watchpoint, convert to
7584 bp_watchpoint in the following condition */
7585 if (target_resources_ok
< 0)
7587 printf_filtered (_("\
7588 Cannot enable watchpoint %d because target watch resources\n\
7589 have been allocated for other watchpoints.\n"), bpt
->number
);
7590 value_free_to_mark (mark
);
7595 select_frame (frame_find_by_id (saved_frame_id
));
7596 value_free_to_mark (mark
);
7599 if (bpt
->enable_state
!= bp_permanent
)
7600 bpt
->enable_state
= bp_enabled
;
7601 bpt
->disposition
= disposition
;
7602 check_duplicates (bpt
);
7603 breakpoints_changed ();
7605 if (deprecated_modify_breakpoint_hook
)
7606 deprecated_modify_breakpoint_hook (bpt
);
7607 breakpoint_modify_event (bpt
->number
);
7612 enable_breakpoint (struct breakpoint
*bpt
)
7614 do_enable_breakpoint (bpt
, bpt
->disposition
);
7617 /* The enable command enables the specified breakpoints (or all defined
7618 breakpoints) so they once again become (or continue to be) effective
7619 in stopping the inferior. */
7622 enable_command (char *args
, int from_tty
)
7624 struct breakpoint
*bpt
;
7626 ALL_BREAKPOINTS (bpt
)
7630 warning (_("attempted to enable apparently deleted breakpoint #%d?"),
7635 case bp_catch_unload
:
7637 case bp_catch_vfork
:
7639 case bp_hardware_breakpoint
:
7641 case bp_hardware_watchpoint
:
7642 case bp_read_watchpoint
:
7643 case bp_access_watchpoint
:
7644 enable_breakpoint (bpt
);
7648 else if (strchr (args
, '.'))
7650 struct bp_location
*loc
= find_location_by_number (args
);
7653 check_duplicates (loc
->owner
);
7656 map_breakpoint_numbers (args
, enable_breakpoint
);
7660 enable_once_breakpoint (struct breakpoint
*bpt
)
7662 do_enable_breakpoint (bpt
, disp_disable
);
7666 enable_once_command (char *args
, int from_tty
)
7668 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7672 enable_delete_breakpoint (struct breakpoint
*bpt
)
7674 do_enable_breakpoint (bpt
, disp_del
);
7678 enable_delete_command (char *args
, int from_tty
)
7680 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7684 set_breakpoint_cmd (char *args
, int from_tty
)
7689 show_breakpoint_cmd (char *args
, int from_tty
)
7693 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7695 struct symtabs_and_lines
7696 decode_line_spec_1 (char *string
, int funfirstline
)
7698 struct symtabs_and_lines sals
;
7700 error (_("Empty line specification."));
7701 if (default_breakpoint_valid
)
7702 sals
= decode_line_1 (&string
, funfirstline
,
7703 default_breakpoint_symtab
,
7704 default_breakpoint_line
,
7705 (char ***) NULL
, NULL
);
7707 sals
= decode_line_1 (&string
, funfirstline
,
7708 (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7710 error (_("Junk at end of line specification: %s"), string
);
7714 /* Create and insert a raw software breakpoint at PC. Return an
7715 identifier, which should be used to remove the breakpoint later.
7716 In general, places which call this should be using something on the
7717 breakpoint chain instead; this function should be eliminated
7721 deprecated_insert_raw_breakpoint (CORE_ADDR pc
)
7723 struct bp_target_info
*bp_tgt
;
7725 bp_tgt
= xmalloc (sizeof (struct bp_target_info
));
7726 memset (bp_tgt
, 0, sizeof (struct bp_target_info
));
7728 bp_tgt
->placed_address
= pc
;
7729 if (target_insert_breakpoint (bp_tgt
) != 0)
7731 /* Could not insert the breakpoint. */
7739 /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
7742 deprecated_remove_raw_breakpoint (void *bp
)
7744 struct bp_target_info
*bp_tgt
= bp
;
7747 ret
= target_remove_breakpoint (bp_tgt
);
7753 /* One (or perhaps two) breakpoints used for software single stepping. */
7755 static void *single_step_breakpoints
[2];
7757 /* Create and insert a breakpoint for software single step. */
7760 insert_single_step_breakpoint (CORE_ADDR next_pc
)
7764 if (single_step_breakpoints
[0] == NULL
)
7765 bpt_p
= &single_step_breakpoints
[0];
7768 gdb_assert (single_step_breakpoints
[1] == NULL
);
7769 bpt_p
= &single_step_breakpoints
[1];
7772 /* NOTE drow/2006-04-11: A future improvement to this function would be
7773 to only create the breakpoints once, and actually put them on the
7774 breakpoint chain. That would let us use set_raw_breakpoint. We could
7775 adjust the addresses each time they were needed. Doing this requires
7776 corresponding changes elsewhere where single step breakpoints are
7777 handled, however. So, for now, we use this. */
7779 *bpt_p
= deprecated_insert_raw_breakpoint (next_pc
);
7781 error (_("Could not insert single-step breakpoint at 0x%s"),
7782 paddr_nz (next_pc
));
7785 /* Remove and delete any breakpoints used for software single step. */
7788 remove_single_step_breakpoints (void)
7790 gdb_assert (single_step_breakpoints
[0] != NULL
);
7792 /* See insert_single_step_breakpoint for more about this deprecated
7794 deprecated_remove_raw_breakpoint (single_step_breakpoints
[0]);
7795 single_step_breakpoints
[0] = NULL
;
7797 if (single_step_breakpoints
[1] != NULL
)
7799 deprecated_remove_raw_breakpoint (single_step_breakpoints
[1]);
7800 single_step_breakpoints
[1] = NULL
;
7804 /* Check whether a software single-step breakpoint is inserted at PC. */
7807 single_step_breakpoint_inserted_here_p (CORE_ADDR pc
)
7811 for (i
= 0; i
< 2; i
++)
7813 struct bp_target_info
*bp_tgt
= single_step_breakpoints
[i
];
7814 if (bp_tgt
&& bp_tgt
->placed_address
== pc
)
7822 /* This help string is used for the break, hbreak, tbreak and thbreak commands.
7823 It is defined as a macro to prevent duplication.
7824 COMMAND should be a string constant containing the name of the command. */
7825 #define BREAK_ARGS_HELP(command) \
7826 command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\
7827 LOCATION may be a line number, function name, or \"*\" and an address.\n\
7828 If a line number is specified, break at start of code for that line.\n\
7829 If a function is specified, break at start of code for that function.\n\
7830 If an address is specified, break at that exact address.\n\
7831 With no LOCATION, uses current execution address of selected stack frame.\n\
7832 This is useful for breaking on return to a stack frame.\n\
7834 THREADNUM is the number from \"info threads\".\n\
7835 CONDITION is a boolean expression.\n\
7837 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7839 Do \"help breakpoints\" for info on other commands dealing with breakpoints."
7842 _initialize_breakpoint (void)
7844 static struct cmd_list_element
*breakpoint_set_cmdlist
;
7845 static struct cmd_list_element
*breakpoint_show_cmdlist
;
7846 struct cmd_list_element
*c
;
7848 observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib
);
7850 breakpoint_chain
= 0;
7851 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7852 before a breakpoint is set. */
7853 breakpoint_count
= 0;
7855 add_com ("ignore", class_breakpoint
, ignore_command
, _("\
7856 Set ignore-count of breakpoint number N to COUNT.\n\
7857 Usage is `ignore N COUNT'."));
7859 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7861 add_com ("commands", class_breakpoint
, commands_command
, _("\
7862 Set commands to be executed when a breakpoint is hit.\n\
7863 Give breakpoint number as argument after \"commands\".\n\
7864 With no argument, the targeted breakpoint is the last one set.\n\
7865 The commands themselves follow starting on the next line.\n\
7866 Type a line containing \"end\" to indicate the end of them.\n\
7867 Give \"silent\" as the first line to make the breakpoint silent;\n\
7868 then no output is printed when it is hit, except what the commands print."));
7870 add_com ("condition", class_breakpoint
, condition_command
, _("\
7871 Specify breakpoint number N to break only if COND is true.\n\
7872 Usage is `condition N COND', where N is an integer and COND is an\n\
7873 expression to be evaluated whenever breakpoint N is reached."));
7875 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
, _("\
7876 Set a temporary breakpoint.\n\
7877 Like \"break\" except the breakpoint is only temporary,\n\
7878 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7879 by using \"enable delete\" on the breakpoint number.\n\
7881 BREAK_ARGS_HELP ("tbreak")));
7882 set_cmd_completer (c
, location_completer
);
7884 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
, _("\
7885 Set a hardware assisted breakpoint.\n\
7886 Like \"break\" except the breakpoint requires hardware support,\n\
7887 some target hardware may not have this support.\n\
7889 BREAK_ARGS_HELP ("hbreak")));
7890 set_cmd_completer (c
, location_completer
);
7892 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
, _("\
7893 Set a temporary hardware assisted breakpoint.\n\
7894 Like \"hbreak\" except the breakpoint is only temporary,\n\
7895 so it will be deleted when hit.\n\
7897 BREAK_ARGS_HELP ("thbreak")));
7898 set_cmd_completer (c
, location_completer
);
7900 add_prefix_cmd ("enable", class_breakpoint
, enable_command
, _("\
7901 Enable some breakpoints.\n\
7902 Give breakpoint numbers (separated by spaces) as arguments.\n\
7903 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7904 This is used to cancel the effect of the \"disable\" command.\n\
7905 With a subcommand you can enable temporarily."),
7906 &enablelist
, "enable ", 1, &cmdlist
);
7908 add_com ("ab", class_breakpoint
, enable_command
, _("\
7909 Enable some breakpoints.\n\
7910 Give breakpoint numbers (separated by spaces) as arguments.\n\
7911 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7912 This is used to cancel the effect of the \"disable\" command.\n\
7913 With a subcommand you can enable temporarily."));
7915 add_com_alias ("en", "enable", class_breakpoint
, 1);
7917 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
, _("\
7918 Enable some breakpoints.\n\
7919 Give breakpoint numbers (separated by spaces) as arguments.\n\
7920 This is used to cancel the effect of the \"disable\" command.\n\
7921 May be abbreviated to simply \"enable\".\n"),
7922 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7924 add_cmd ("once", no_class
, enable_once_command
, _("\
7925 Enable breakpoints for one hit. Give breakpoint numbers.\n\
7926 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
7929 add_cmd ("delete", no_class
, enable_delete_command
, _("\
7930 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7931 If a breakpoint is hit while enabled in this fashion, it is deleted."),
7934 add_cmd ("delete", no_class
, enable_delete_command
, _("\
7935 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7936 If a breakpoint is hit while enabled in this fashion, it is deleted."),
7939 add_cmd ("once", no_class
, enable_once_command
, _("\
7940 Enable breakpoints for one hit. Give breakpoint numbers.\n\
7941 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
7944 add_prefix_cmd ("disable", class_breakpoint
, disable_command
, _("\
7945 Disable some breakpoints.\n\
7946 Arguments are breakpoint numbers with spaces in between.\n\
7947 To disable all breakpoints, give no argument.\n\
7948 A disabled breakpoint is not forgotten, but has no effect until reenabled."),
7949 &disablelist
, "disable ", 1, &cmdlist
);
7950 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7951 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7953 add_com ("sb", class_breakpoint
, disable_command
, _("\
7954 Disable some breakpoints.\n\
7955 Arguments are breakpoint numbers with spaces in between.\n\
7956 To disable all breakpoints, give no argument.\n\
7957 A disabled breakpoint is not forgotten, but has no effect until reenabled."));
7959 add_cmd ("breakpoints", class_alias
, disable_command
, _("\
7960 Disable some breakpoints.\n\
7961 Arguments are breakpoint numbers with spaces in between.\n\
7962 To disable all breakpoints, give no argument.\n\
7963 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7964 This command may be abbreviated \"disable\"."),
7967 add_prefix_cmd ("delete", class_breakpoint
, delete_command
, _("\
7968 Delete some breakpoints or auto-display expressions.\n\
7969 Arguments are breakpoint numbers with spaces in between.\n\
7970 To delete all breakpoints, give no argument.\n\
7972 Also a prefix command for deletion of other GDB objects.\n\
7973 The \"unset\" command is also an alias for \"delete\"."),
7974 &deletelist
, "delete ", 1, &cmdlist
);
7975 add_com_alias ("d", "delete", class_breakpoint
, 1);
7976 add_com_alias ("del", "delete", class_breakpoint
, 1);
7978 add_com ("db", class_breakpoint
, delete_command
, _("\
7979 Delete some breakpoints.\n\
7980 Arguments are breakpoint numbers with spaces in between.\n\
7981 To delete all breakpoints, give no argument.\n"));
7983 add_cmd ("breakpoints", class_alias
, delete_command
, _("\
7984 Delete some breakpoints or auto-display expressions.\n\
7985 Arguments are breakpoint numbers with spaces in between.\n\
7986 To delete all breakpoints, give no argument.\n\
7987 This command may be abbreviated \"delete\"."),
7990 add_com ("clear", class_breakpoint
, clear_command
, _("\
7991 Clear breakpoint at specified line or function.\n\
7992 Argument may be line number, function name, or \"*\" and an address.\n\
7993 If line number is specified, all breakpoints in that line are cleared.\n\
7994 If function is specified, breakpoints at beginning of function are cleared.\n\
7995 If an address is specified, breakpoints at that address are cleared.\n\
7997 With no argument, clears all breakpoints in the line that the selected frame\n\
8000 See also the \"delete\" command which clears breakpoints by number."));
8002 c
= add_com ("break", class_breakpoint
, break_command
, _("\
8003 Set breakpoint at specified line or function.\n"
8004 BREAK_ARGS_HELP ("break")));
8005 set_cmd_completer (c
, location_completer
);
8007 add_com_alias ("b", "break", class_run
, 1);
8008 add_com_alias ("br", "break", class_run
, 1);
8009 add_com_alias ("bre", "break", class_run
, 1);
8010 add_com_alias ("brea", "break", class_run
, 1);
8014 add_com_alias ("ba", "break", class_breakpoint
, 1);
8015 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
8020 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
, _("\
8021 Break in function/address or break at a line in the current file."),
8022 &stoplist
, "stop ", 1, &cmdlist
);
8023 add_cmd ("in", class_breakpoint
, stopin_command
,
8024 _("Break in function or address."), &stoplist
);
8025 add_cmd ("at", class_breakpoint
, stopat_command
,
8026 _("Break at a line in the current file."), &stoplist
);
8027 add_com ("status", class_info
, breakpoints_info
, _("\
8028 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8029 The \"Type\" column indicates one of:\n\
8030 \tbreakpoint - normal breakpoint\n\
8031 \twatchpoint - watchpoint\n\
8032 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8033 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8034 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8035 address and file/line number respectively.\n\
8037 Convenience variable \"$_\" and default examine address for \"x\"\n\
8038 are set to the address of the last breakpoint listed unless the command\n\
8039 is prefixed with \"server \".\n\n\
8040 Convenience variable \"$bpnum\" contains the number of the last\n\
8044 add_info ("breakpoints", breakpoints_info
, _("\
8045 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8046 The \"Type\" column indicates one of:\n\
8047 \tbreakpoint - normal breakpoint\n\
8048 \twatchpoint - watchpoint\n\
8049 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8050 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8051 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8052 address and file/line number respectively.\n\
8054 Convenience variable \"$_\" and default examine address for \"x\"\n\
8055 are set to the address of the last breakpoint listed unless the command\n\
8056 is prefixed with \"server \".\n\n\
8057 Convenience variable \"$bpnum\" contains the number of the last\n\
8061 add_com ("lb", class_breakpoint
, breakpoints_info
, _("\
8062 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8063 The \"Type\" column indicates one of:\n\
8064 \tbreakpoint - normal breakpoint\n\
8065 \twatchpoint - watchpoint\n\
8066 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8067 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8068 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8069 address and file/line number respectively.\n\
8071 Convenience variable \"$_\" and default examine address for \"x\"\n\
8072 are set to the address of the last breakpoint listed unless the command\n\
8073 is prefixed with \"server \".\n\n\
8074 Convenience variable \"$bpnum\" contains the number of the last\n\
8077 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
, _("\
8078 Status of all breakpoints, or breakpoint number NUMBER.\n\
8079 The \"Type\" column indicates one of:\n\
8080 \tbreakpoint - normal breakpoint\n\
8081 \twatchpoint - watchpoint\n\
8082 \tlongjmp - internal breakpoint used to step through longjmp()\n\
8083 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
8084 \tuntil - internal breakpoint used by the \"until\" command\n\
8085 \tfinish - internal breakpoint used by the \"finish\" command\n\
8086 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8087 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8088 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8089 address and file/line number respectively.\n\
8091 Convenience variable \"$_\" and default examine address for \"x\"\n\
8092 are set to the address of the last breakpoint listed unless the command\n\
8093 is prefixed with \"server \".\n\n\
8094 Convenience variable \"$bpnum\" contains the number of the last\n\
8096 &maintenanceinfolist
);
8098 add_com ("catch", class_breakpoint
, catch_command
, _("\
8099 Set catchpoints to catch events.\n\
8100 Raised signals may be caught:\n\
8101 \tcatch signal - all signals\n\
8102 \tcatch signal <signame> - a particular signal\n\
8103 Raised exceptions may be caught:\n\
8104 \tcatch throw - all exceptions, when thrown\n\
8105 \tcatch throw <exceptname> - a particular exception, when thrown\n\
8106 \tcatch catch - all exceptions, when caught\n\
8107 \tcatch catch <exceptname> - a particular exception, when caught\n\
8108 Thread or process events may be caught:\n\
8109 \tcatch thread_start - any threads, just after creation\n\
8110 \tcatch thread_exit - any threads, just before expiration\n\
8111 \tcatch thread_join - any threads, just after joins\n\
8112 Process events may be caught:\n\
8113 \tcatch start - any processes, just after creation\n\
8114 \tcatch exit - any processes, just before expiration\n\
8115 \tcatch fork - calls to fork()\n\
8116 \tcatch vfork - calls to vfork()\n\
8117 \tcatch exec - calls to exec()\n\
8118 Dynamically-linked library events may be caught:\n\
8119 \tcatch load - loads of any library\n\
8120 \tcatch load <libname> - loads of a particular library\n\
8121 \tcatch unload - unloads of any library\n\
8122 \tcatch unload <libname> - unloads of a particular library\n\
8123 The act of your program's execution stopping may also be caught:\n\
8125 C++ exceptions may be caught:\n\
8126 \tcatch throw - all exceptions, when thrown\n\
8127 \tcatch catch - all exceptions, when caught\n\
8128 Ada exceptions may be caught:\n\
8129 \tcatch exception - all exceptions, when raised\n\
8130 \tcatch exception <name> - a particular exception, when raised\n\
8131 \tcatch exception unhandled - all unhandled exceptions, when raised\n\
8132 \tcatch assert - all failed assertions, when raised\n\
8134 Do \"help set follow-fork-mode\" for info on debugging your program\n\
8135 after a fork or vfork is caught.\n\n\
8136 Do \"help breakpoints\" for info on other commands dealing with breakpoints."));
8138 add_com ("tcatch", class_breakpoint
, tcatch_command
, _("\
8139 Set temporary catchpoints to catch events.\n\
8140 Args like \"catch\" command.\n\
8141 Like \"catch\" except the catchpoint is only temporary,\n\
8142 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
8143 by using \"enable delete\" on the catchpoint number."));
8145 c
= add_com ("watch", class_breakpoint
, watch_command
, _("\
8146 Set a watchpoint for an expression.\n\
8147 A watchpoint stops execution of your program whenever the value of\n\
8148 an expression changes."));
8149 set_cmd_completer (c
, location_completer
);
8151 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
, _("\
8152 Set a read watchpoint for an expression.\n\
8153 A watchpoint stops execution of your program whenever the value of\n\
8154 an expression is read."));
8155 set_cmd_completer (c
, location_completer
);
8157 c
= add_com ("awatch", class_breakpoint
, awatch_command
, _("\
8158 Set a watchpoint for an expression.\n\
8159 A watchpoint stops execution of your program whenever the value of\n\
8160 an expression is either read or written."));
8161 set_cmd_completer (c
, location_completer
);
8163 add_info ("watchpoints", breakpoints_info
,
8164 _("Synonym for ``info breakpoints''."));
8167 /* XXX: cagney/2005-02-23: This should be a boolean, and should
8168 respond to changes - contrary to the description. */
8169 add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support
,
8170 &can_use_hw_watchpoints
, _("\
8171 Set debugger's willingness to use watchpoint hardware."), _("\
8172 Show debugger's willingness to use watchpoint hardware."), _("\
8173 If zero, gdb will not use hardware for new watchpoints, even if\n\
8174 such is available. (However, any hardware watchpoints that were\n\
8175 created before setting this to nonzero, will continue to use watchpoint\n\
8178 show_can_use_hw_watchpoints
,
8179 &setlist
, &showlist
);
8181 can_use_hw_watchpoints
= 1;
8183 add_prefix_cmd ("breakpoint", class_maintenance
, set_breakpoint_cmd
, _("\
8184 Breakpoint specific settings\n\
8185 Configure various breakpoint-specific variables such as\n\
8186 pending breakpoint behavior"),
8187 &breakpoint_set_cmdlist
, "set breakpoint ",
8188 0/*allow-unknown*/, &setlist
);
8189 add_prefix_cmd ("breakpoint", class_maintenance
, show_breakpoint_cmd
, _("\
8190 Breakpoint specific settings\n\
8191 Configure various breakpoint-specific variables such as\n\
8192 pending breakpoint behavior"),
8193 &breakpoint_show_cmdlist
, "show breakpoint ",
8194 0/*allow-unknown*/, &showlist
);
8196 add_setshow_auto_boolean_cmd ("pending", no_class
,
8197 &pending_break_support
, _("\
8198 Set debugger's behavior regarding pending breakpoints."), _("\
8199 Show debugger's behavior regarding pending breakpoints."), _("\
8200 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8201 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8202 an error. If auto, an unrecognized breakpoint location results in a\n\
8203 user-query to see if a pending breakpoint should be created."),
8205 show_pending_break_support
,
8206 &breakpoint_set_cmdlist
,
8207 &breakpoint_show_cmdlist
);
8209 pending_break_support
= AUTO_BOOLEAN_AUTO
;
8211 add_setshow_boolean_cmd ("auto-hw", no_class
,
8212 &automatic_hardware_breakpoints
, _("\
8213 Set automatic usage of hardware breakpoints."), _("\
8214 Show automatic usage of hardware breakpoints."), _("\
8215 If set, the debugger will automatically use hardware breakpoints for\n\
8216 breakpoints set with \"break\" but falling in read-only memory. If not set,\n\
8217 a warning will be emitted for such breakpoints."),
8219 show_automatic_hardware_breakpoints
,
8220 &breakpoint_set_cmdlist
,
8221 &breakpoint_show_cmdlist
);
8223 automatic_hardware_breakpoints
= 1;