1 /* Everything about breakpoints, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "breakpoint.h"
28 #include "expression.h"
34 #include "gdbthread.h"
37 #include "gdb_string.h"
44 #include "completer.h"
47 #include "cli/cli-script.h"
48 #include "gdb_assert.h"
53 #include "exceptions.h"
58 #include "gdb-events.h"
59 #include "mi/mi-common.h"
61 /* Prototypes for local functions. */
63 static void until_break_command_continuation (struct continuation_arg
*arg
);
65 static void catch_command_1 (char *, int, int);
67 static void enable_delete_command (char *, int);
69 static void enable_delete_breakpoint (struct breakpoint
*);
71 static void enable_once_command (char *, int);
73 static void enable_once_breakpoint (struct breakpoint
*);
75 static void disable_command (char *, int);
77 static void enable_command (char *, int);
79 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
81 static void ignore_command (char *, int);
83 static int breakpoint_re_set_one (void *);
85 static void clear_command (char *, int);
87 static void catch_command (char *, int);
89 static void watch_command (char *, int);
91 static int can_use_hardware_watchpoint (struct value
*);
93 static int break_command_1 (char *, int, int);
95 static void mention (struct breakpoint
*);
97 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
, enum bptype
);
99 static void check_duplicates (struct breakpoint
*);
101 static void breakpoint_adjustment_warning (CORE_ADDR
, CORE_ADDR
, int, int);
103 static CORE_ADDR
adjust_breakpoint_address (CORE_ADDR bpaddr
,
106 static void describe_other_breakpoints (CORE_ADDR
, asection
*, int);
108 static void breakpoints_info (char *, int);
110 static void breakpoint_1 (int, int);
112 static bpstat
bpstat_alloc (const struct bp_location
*, bpstat
);
114 static int breakpoint_cond_eval (void *);
116 static void cleanup_executing_breakpoints (void *);
118 static void commands_command (char *, int);
120 static void condition_command (char *, int);
122 static int get_number_trailer (char **, int);
124 void set_breakpoint_count (int);
133 static int remove_breakpoint (struct bp_location
*, insertion_state_t
);
135 static enum print_stop_action
print_it_typical (bpstat
);
137 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
141 enum exception_event_kind kind
;
144 args_for_catchpoint_enable
;
146 static int watchpoint_check (void *);
148 static void maintenance_info_breakpoints (char *, int);
150 static void create_longjmp_breakpoint (char *);
152 static void create_overlay_event_breakpoint (char *);
154 static int hw_breakpoint_used_count (void);
156 static int hw_watchpoint_used_count (enum bptype
, int *);
158 static void hbreak_command (char *, int);
160 static void thbreak_command (char *, int);
162 static void watch_command_1 (char *, int, int);
164 static void rwatch_command (char *, int);
166 static void awatch_command (char *, int);
168 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
170 static void create_fork_vfork_event_catchpoint (int tempflag
,
172 enum bptype bp_kind
);
174 static void stop_command (char *arg
, int from_tty
);
176 static void stopin_command (char *arg
, int from_tty
);
178 static void stopat_command (char *arg
, int from_tty
);
180 static char *ep_find_event_name_end (char *arg
);
182 static char *ep_parse_optional_if_clause (char **arg
);
184 static char *ep_parse_optional_filename (char **arg
);
186 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
187 enum exception_event_kind ex_event
,
188 struct symtab_and_line
*sal
);
190 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
191 char *arg
, int tempflag
, int from_tty
);
193 static void tcatch_command (char *arg
, int from_tty
);
195 static void ep_skip_leading_whitespace (char **s
);
197 static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc
);
199 static void free_bp_location (struct bp_location
*loc
);
201 static void mark_breakpoints_out (void);
203 /* Prototypes for exported functions. */
205 /* If FALSE, gdb will not use hardware support for watchpoints, even
206 if such is available. */
207 static int can_use_hw_watchpoints
;
210 show_can_use_hw_watchpoints (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
,
214 fprintf_filtered (file
, _("\
215 Debugger's willingness to use watchpoint hardware is %s.\n"),
219 /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
220 If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
221 for unrecognized breakpoint locations.
222 If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
223 static enum auto_boolean pending_break_support
;
225 show_pending_break_support (struct ui_file
*file
, int from_tty
,
226 struct cmd_list_element
*c
,
229 fprintf_filtered (file
, _("\
230 Debugger's behavior regarding pending breakpoints is %s.\n"),
234 /* If 1, gdb will automatically use hardware breakpoints for breakpoints
235 set with "break" but falling in read-only memory.
236 If 0, gdb will warn about such breakpoints, but won't automatically
237 use hardware breakpoints. */
238 static int automatic_hardware_breakpoints
;
240 show_automatic_hardware_breakpoints (struct ui_file
*file
, int from_tty
,
241 struct cmd_list_element
*c
,
244 fprintf_filtered (file
, _("\
245 Automatic usage of hardware breakpoints is %s.\n"),
250 void _initialize_breakpoint (void);
252 extern int addressprint
; /* Print machine addresses? */
254 /* Are we executing breakpoint commands? */
255 static int executing_breakpoint_commands
;
257 /* Are overlay event breakpoints enabled? */
258 static int overlay_events_enabled
;
260 /* Walk the following statement or block through all breakpoints.
261 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
264 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
266 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
267 for (B = breakpoint_chain; \
268 B ? (TMP=B->next, 1): 0; \
271 /* Similar iterators for the low-level breakpoints. */
273 #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next)
275 #define ALL_BP_LOCATIONS_SAFE(B,TMP) \
276 for (B = bp_location_chain; \
277 B ? (TMP=B->global_next, 1): 0; \
280 /* True if breakpoint hit counts should be displayed in breakpoint info. */
282 int show_breakpoint_hit_counts
= 1;
284 /* Chains of all breakpoints defined. */
286 struct breakpoint
*breakpoint_chain
;
288 struct bp_location
*bp_location_chain
;
290 /* Number of last breakpoint made. */
292 int breakpoint_count
;
294 /* Pointer to current exception event record */
295 static struct exception_event_record
*current_exception_event
;
297 /* This function returns a pointer to the string representation of the
298 pathname of the dynamically-linked library that has just been
301 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
302 or undefined results are guaranteed.
304 This string's contents are only valid immediately after the
305 inferior has stopped in the dynamic linker hook, and becomes
306 invalid as soon as the inferior is continued. Clients should make
307 a copy of this string if they wish to continue the inferior and
308 then access the string. */
310 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
311 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
314 /* This function returns a pointer to the string representation of the
315 pathname of the dynamically-linked library that has just been
318 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
319 TRUE, or undefined results are guaranteed.
321 This string's contents are only valid immediately after the
322 inferior has stopped in the dynamic linker hook, and becomes
323 invalid as soon as the inferior is continued. Clients should make
324 a copy of this string if they wish to continue the inferior and
325 then access the string. */
327 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
328 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
331 /* This function is called by the "catch load" command. It allows the
332 debugger to be notified by the dynamic linker when a specified
333 library file (or any library file, if filename is NULL) is loaded. */
335 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
336 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
337 error (_("catch of library loads not yet implemented on this platform"))
340 /* This function is called by the "catch unload" command. It allows
341 the debugger to be notified by the dynamic linker when a specified
342 library file (or any library file, if filename is NULL) is
345 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
346 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \
347 error (_("catch of library unloads not yet implemented on this platform"))
350 /* Return whether a breakpoint is an active enabled breakpoint. */
352 breakpoint_enabled (struct breakpoint
*b
)
354 return (b
->enable_state
== bp_enabled
);
357 /* Set breakpoint count to NUM. */
360 set_breakpoint_count (int num
)
362 breakpoint_count
= num
;
363 set_internalvar (lookup_internalvar ("bpnum"),
364 value_from_longest (builtin_type_int
, (LONGEST
) num
));
367 /* Used in run_command to zero the hit count when a new run starts. */
370 clear_breakpoint_hit_counts (void)
372 struct breakpoint
*b
;
378 /* Default address, symtab and line to put a breakpoint at
379 for "break" command with no arg.
380 if default_breakpoint_valid is zero, the other three are
381 not valid, and "break" with no arg is an error.
383 This set by print_stack_frame, which calls set_default_breakpoint. */
385 int default_breakpoint_valid
;
386 CORE_ADDR default_breakpoint_address
;
387 struct symtab
*default_breakpoint_symtab
;
388 int default_breakpoint_line
;
390 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
391 Advance *PP after the string and any trailing whitespace.
393 Currently the string can either be a number or "$" followed by the name
394 of a convenience variable. Making it an expression wouldn't work well
395 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
397 If the string is a NULL pointer, that denotes the last breakpoint.
399 TRAILER is a character which can be found after the number; most
400 commonly this is `-'. If you don't want a trailer, use \0. */
402 get_number_trailer (char **pp
, int trailer
)
404 int retval
= 0; /* default */
408 /* Empty line means refer to the last breakpoint. */
409 return breakpoint_count
;
412 /* Make a copy of the name, so we can null-terminate it
413 to pass to lookup_internalvar(). */
418 while (isalnum (*p
) || *p
== '_')
420 varname
= (char *) alloca (p
- start
+ 1);
421 strncpy (varname
, start
, p
- start
);
422 varname
[p
- start
] = '\0';
423 val
= value_of_internalvar (lookup_internalvar (varname
));
424 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INT
)
425 retval
= (int) value_as_long (val
);
428 printf_filtered (_("Convenience variable must have integer value.\n"));
436 while (*p
>= '0' && *p
<= '9')
439 /* There is no number here. (e.g. "cond a == b"). */
441 /* Skip non-numeric token */
442 while (*p
&& !isspace((int) *p
))
444 /* Return zero, which caller must interpret as error. */
450 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
452 /* Trailing junk: return 0 and let caller print error msg. */
453 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
464 /* Like get_number_trailer, but don't allow a trailer. */
466 get_number (char **pp
)
468 return get_number_trailer (pp
, '\0');
471 /* Parse a number or a range.
472 * A number will be of the form handled by get_number.
473 * A range will be of the form <number1> - <number2>, and
474 * will represent all the integers between number1 and number2,
477 * While processing a range, this fuction is called iteratively;
478 * At each call it will return the next value in the range.
480 * At the beginning of parsing a range, the char pointer PP will
481 * be advanced past <number1> and left pointing at the '-' token.
482 * Subsequent calls will not advance the pointer until the range
483 * is completed. The call that completes the range will advance
484 * pointer PP past <number2>.
488 get_number_or_range (char **pp
)
490 static int last_retval
, end_value
;
491 static char *end_ptr
;
492 static int in_range
= 0;
496 /* Default case: pp is pointing either to a solo number,
497 or to the first number of a range. */
498 last_retval
= get_number_trailer (pp
, '-');
503 /* This is the start of a range (<number1> - <number2>).
504 Skip the '-', parse and remember the second number,
505 and also remember the end of the final token. */
509 while (isspace ((int) *end_ptr
))
510 end_ptr
++; /* skip white space */
511 end_value
= get_number (temp
);
512 if (end_value
< last_retval
)
514 error (_("inverted range"));
516 else if (end_value
== last_retval
)
518 /* degenerate range (number1 == number2). Advance the
519 token pointer so that the range will be treated as a
528 error (_("negative value"));
531 /* pp points to the '-' that betokens a range. All
532 number-parsing has already been done. Return the next
533 integer value (one greater than the saved previous value).
534 Do not advance the token pointer 'pp' until the end of range
537 if (++last_retval
== end_value
)
539 /* End of range reached; advance token pointer. */
549 /* condition N EXP -- set break condition of breakpoint N to EXP. */
552 condition_command (char *arg
, int from_tty
)
554 struct breakpoint
*b
;
559 error_no_arg (_("breakpoint number"));
562 bnum
= get_number (&p
);
564 error (_("Bad breakpoint argument: '%s'"), arg
);
567 if (b
->number
== bnum
)
569 struct bp_location
*loc
= b
->loc
;
570 for (; loc
; loc
= loc
->next
)
578 if (b
->cond_string
!= NULL
)
579 xfree (b
->cond_string
);
583 b
->cond_string
= NULL
;
585 printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum
);
590 /* I don't know if it matters whether this is the string the user
591 typed in or the decompiled expression. */
592 b
->cond_string
= savestring (arg
, strlen (arg
));
593 b
->condition_not_parsed
= 0;
594 for (loc
= b
->loc
; loc
; loc
= loc
->next
)
597 loc
->cond
= parse_exp_1 (&arg
, block_for_pc (loc
->address
), 0);
599 error (_("Junk at end of expression"));
602 breakpoints_changed ();
603 breakpoint_modify_event (b
->number
);
607 error (_("No breakpoint number %d."), bnum
);
611 commands_command (char *arg
, int from_tty
)
613 struct breakpoint
*b
;
616 struct command_line
*l
;
618 /* If we allowed this, we would have problems with when to
619 free the storage, if we change the commands currently
622 if (executing_breakpoint_commands
)
623 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
626 bnum
= get_number (&p
);
629 error (_("Unexpected extra arguments following breakpoint number."));
632 if (b
->number
== bnum
)
634 char *tmpbuf
= xstrprintf ("Type commands for when breakpoint %d is hit, one per line.",
636 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
637 l
= read_command_lines (tmpbuf
, from_tty
);
638 do_cleanups (cleanups
);
639 free_command_lines (&b
->commands
);
641 breakpoints_changed ();
642 breakpoint_modify_event (b
->number
);
645 error (_("No breakpoint number %d."), bnum
);
648 /* Like commands_command, but instead of reading the commands from
649 input stream, takes them from an already parsed command structure.
651 This is used by cli-script.c to DTRT with breakpoint commands
652 that are part of if and while bodies. */
653 enum command_control_type
654 commands_from_control_command (char *arg
, struct command_line
*cmd
)
656 struct breakpoint
*b
;
660 /* If we allowed this, we would have problems with when to
661 free the storage, if we change the commands currently
664 if (executing_breakpoint_commands
)
665 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
667 /* An empty string for the breakpoint number means the last
668 breakpoint, but get_number expects a NULL pointer. */
673 bnum
= get_number (&p
);
676 error (_("Unexpected extra arguments following breakpoint number."));
679 if (b
->number
== bnum
)
681 free_command_lines (&b
->commands
);
682 if (cmd
->body_count
!= 1)
683 error (_("Invalid \"commands\" block structure."));
684 /* We need to copy the commands because if/while will free the
685 list after it finishes execution. */
686 b
->commands
= copy_command_lines (cmd
->body_list
[0]);
687 breakpoints_changed ();
688 breakpoint_modify_event (b
->number
);
689 return simple_control
;
691 error (_("No breakpoint number %d."), bnum
);
694 /* Like target_read_memory() but if breakpoints are inserted, return
695 the shadow contents instead of the breakpoints themselves.
697 Read "memory data" from whatever target or inferior we have.
698 Returns zero if successful, errno value if not. EIO is used
699 for address out of bounds. If breakpoints are inserted, returns
700 shadow contents, not the breakpoints themselves. From breakpoint.c. */
703 read_memory_nobpt (CORE_ADDR memaddr
, gdb_byte
*myaddr
, unsigned len
)
706 const struct bp_location
*b
;
707 CORE_ADDR bp_addr
= 0;
710 if (gdbarch_breakpoint_from_pc (current_gdbarch
, &bp_addr
, &bp_size
) == NULL
)
711 /* No breakpoints on this machine. */
712 return target_read_memory (memaddr
, myaddr
, len
);
716 if (b
->owner
->type
== bp_none
)
717 warning (_("reading through apparently deleted breakpoint #%d?"),
720 if (b
->loc_type
!= bp_loc_software_breakpoint
)
724 /* Addresses and length of the part of the breakpoint that
726 bp_addr
= b
->target_info
.placed_address
;
727 bp_size
= b
->target_info
.shadow_len
;
729 /* bp isn't valid, or doesn't shadow memory. */
731 if (bp_addr
+ bp_size
<= memaddr
)
732 /* The breakpoint is entirely before the chunk of memory we
735 if (bp_addr
>= memaddr
+ len
)
736 /* The breakpoint is entirely after the chunk of memory we are
739 /* Copy the breakpoint from the shadow contents, and recurse for
740 the things before and after. */
742 /* Offset within shadow_contents. */
745 if (bp_addr
< memaddr
)
747 /* Only copy the second part of the breakpoint. */
748 bp_size
-= memaddr
- bp_addr
;
749 bptoffset
= memaddr
- bp_addr
;
753 if (bp_addr
+ bp_size
> memaddr
+ len
)
755 /* Only copy the first part of the breakpoint. */
756 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
759 memcpy (myaddr
+ bp_addr
- memaddr
,
760 b
->target_info
.shadow_contents
+ bptoffset
, bp_size
);
762 if (bp_addr
> memaddr
)
764 /* Copy the section of memory before the breakpoint. */
765 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
770 if (bp_addr
+ bp_size
< memaddr
+ len
)
772 /* Copy the section of memory after the breakpoint. */
773 status
= read_memory_nobpt (bp_addr
+ bp_size
,
774 myaddr
+ bp_addr
+ bp_size
- memaddr
,
775 memaddr
+ len
- (bp_addr
+ bp_size
));
782 /* Nothing overlaps. Just call read_memory_noerr. */
783 return target_read_memory (memaddr
, myaddr
, len
);
787 /* A wrapper function for inserting catchpoints. */
789 insert_catchpoint (struct ui_out
*uo
, void *args
)
791 struct breakpoint
*b
= (struct breakpoint
*) args
;
797 target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
800 target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
803 target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
806 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
811 /* Helper routine: free the value chain for a breakpoint (watchpoint). */
814 free_valchain (struct bp_location
*b
)
819 /* Free the saved value chain. We will construct a new one
820 the next time the watchpoint is inserted. */
821 for (v
= b
->owner
->val_chain
; v
; v
= n
)
826 b
->owner
->val_chain
= NULL
;
829 /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
830 Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
831 PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems.
833 NOTE drow/2003-09-09: This routine could be broken down to an object-style
834 method for each breakpoint or catchpoint type. */
836 insert_bp_location (struct bp_location
*bpt
,
837 struct ui_file
*tmp_error_stream
,
838 int *disabled_breaks
, int *process_warning
,
839 int *hw_breakpoint_error
)
843 if (!breakpoint_enabled (bpt
->owner
))
846 if (!bpt
->enabled
|| bpt
->shlib_disabled
|| bpt
->inserted
|| bpt
->duplicate
)
849 /* Initialize the target-specific information. */
850 memset (&bpt
->target_info
, 0, sizeof (bpt
->target_info
));
851 bpt
->target_info
.placed_address
= bpt
->address
;
853 if (bpt
->loc_type
== bp_loc_software_breakpoint
854 || bpt
->loc_type
== bp_loc_hardware_breakpoint
)
856 if (bpt
->owner
->type
!= bp_hardware_breakpoint
)
858 /* If the explicitly specified breakpoint type
859 is not hardware breakpoint, check the memory map to see
860 if the breakpoint address is in read only memory or not.
861 Two important cases are:
862 - location type is not hardware breakpoint, memory
863 is readonly. We change the type of the location to
865 - location type is hardware breakpoint, memory is read-write.
866 This means we've previously made the location hardware one, but
867 then the memory map changed, so we undo.
869 When breakpoints are removed, remove_breakpoints will
870 use location types we've just set here, the only possible
871 problem is that memory map has changed during running program,
872 but it's not going to work anyway with current gdb. */
873 struct mem_region
*mr
874 = lookup_mem_region (bpt
->target_info
.placed_address
);
878 if (automatic_hardware_breakpoints
)
881 enum bp_loc_type new_type
;
883 if (mr
->attrib
.mode
!= MEM_RW
)
884 new_type
= bp_loc_hardware_breakpoint
;
886 new_type
= bp_loc_software_breakpoint
;
888 if (new_type
!= bpt
->loc_type
)
891 bpt
->loc_type
= new_type
;
894 fprintf_filtered (gdb_stdout
, _("\
895 Note: automatically using hardware breakpoints for read-only addresses.\n"));
900 else if (bpt
->loc_type
== bp_loc_software_breakpoint
901 && mr
->attrib
.mode
!= MEM_RW
)
902 warning (_("cannot set software breakpoint at readonly address %s"),
903 paddr (bpt
->address
));
907 /* First check to see if we have to handle an overlay. */
908 if (overlay_debugging
== ovly_off
909 || bpt
->section
== NULL
910 || !(section_is_overlay (bpt
->section
)))
912 /* No overlay handling: just set the breakpoint. */
914 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
915 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
917 val
= target_insert_breakpoint (&bpt
->target_info
);
921 /* This breakpoint is in an overlay section.
922 Shall we set a breakpoint at the LMA? */
923 if (!overlay_events_enabled
)
925 /* Yes -- overlay event support is not active,
926 so we must try to set a breakpoint at the LMA.
927 This will not work for a hardware breakpoint. */
928 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
929 warning (_("hardware breakpoint %d not supported in overlay!"),
933 CORE_ADDR addr
= overlay_unmapped_address (bpt
->address
,
935 /* Set a software (trap) breakpoint at the LMA. */
936 bpt
->overlay_target_info
= bpt
->target_info
;
937 bpt
->overlay_target_info
.placed_address
= addr
;
938 val
= target_insert_breakpoint (&bpt
->overlay_target_info
);
940 fprintf_unfiltered (tmp_error_stream
,
941 "Overlay breakpoint %d failed: in ROM?",
945 /* Shall we set a breakpoint at the VMA? */
946 if (section_is_mapped (bpt
->section
))
948 /* Yes. This overlay section is mapped into memory. */
949 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
950 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
952 val
= target_insert_breakpoint (&bpt
->target_info
);
956 /* No. This breakpoint will not be inserted.
957 No error, but do not mark the bp as 'inserted'. */
964 /* Can't set the breakpoint. */
965 if (solib_address (bpt
->address
))
967 /* See also: disable_breakpoints_in_shlibs. */
969 bpt
->shlib_disabled
= 1;
970 if (!*disabled_breaks
)
972 fprintf_unfiltered (tmp_error_stream
,
973 "Cannot insert breakpoint %d.\n",
975 fprintf_unfiltered (tmp_error_stream
,
976 "Temporarily disabling shared library breakpoints:\n");
978 *disabled_breaks
= 1;
979 fprintf_unfiltered (tmp_error_stream
,
980 "breakpoint #%d\n", bpt
->owner
->number
);
984 #ifdef ONE_PROCESS_WRITETEXT
985 *process_warning
= 1;
987 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
989 *hw_breakpoint_error
= 1;
990 fprintf_unfiltered (tmp_error_stream
,
991 "Cannot insert hardware breakpoint %d.\n",
996 fprintf_unfiltered (tmp_error_stream
,
997 "Cannot insert breakpoint %d.\n",
999 fprintf_filtered (tmp_error_stream
,
1000 "Error accessing memory address ");
1001 deprecated_print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
1002 fprintf_filtered (tmp_error_stream
, ": %s.\n",
1003 safe_strerror (val
));
1014 else if (bpt
->loc_type
== bp_loc_hardware_watchpoint
1015 /* NOTE drow/2003-09-08: This state only exists for removing
1016 watchpoints. It's not clear that it's necessary... */
1017 && bpt
->owner
->disposition
!= disp_del_at_next_stop
)
1019 /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints
1020 based on the expression. Ideally this should happen at a higher level,
1021 and there should be one bp_location for each computed address we
1022 must watch. As soon as a many-to-one mapping is available I'll
1025 int within_current_scope
;
1026 struct value
*mark
= value_mark ();
1028 struct frame_id saved_frame_id
;
1030 /* Save the current frame's ID so we can restore it after
1031 evaluating the watchpoint expression on its own frame. */
1032 /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
1033 took a frame parameter, so that we didn't have to change the
1035 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
1037 /* Determine if the watchpoint is within scope. */
1038 if (bpt
->owner
->exp_valid_block
== NULL
)
1039 within_current_scope
= 1;
1042 struct frame_info
*fi
;
1043 fi
= frame_find_by_id (bpt
->owner
->watchpoint_frame
);
1044 within_current_scope
= (fi
!= NULL
);
1045 if (within_current_scope
)
1049 if (within_current_scope
)
1051 free_valchain (bpt
);
1053 /* Evaluate the expression and cut the chain of values
1054 produced off from the value chain.
1056 Make sure the value returned isn't lazy; we use
1057 laziness to determine what memory GDB actually needed
1058 in order to compute the value of the expression. */
1059 v
= evaluate_expression (bpt
->owner
->exp
);
1061 value_release_to_mark (mark
);
1063 bpt
->owner
->val_chain
= v
;
1066 /* Look at each value on the value chain. */
1067 for (; v
; v
= value_next (v
))
1069 /* If it's a memory location, and GDB actually needed
1070 its contents to evaluate the expression, then we
1072 if (VALUE_LVAL (v
) == lval_memory
1073 && ! value_lazy (v
))
1075 struct type
*vtype
= check_typedef (value_type (v
));
1077 /* We only watch structs and arrays if user asked
1078 for it explicitly, never if they just happen to
1079 appear in the middle of some value chain. */
1080 if (v
== bpt
->owner
->val_chain
1081 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1082 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1087 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1088 len
= TYPE_LENGTH (value_type (v
));
1090 if (bpt
->owner
->type
== bp_read_watchpoint
)
1092 else if (bpt
->owner
->type
== bp_access_watchpoint
)
1095 val
= target_insert_watchpoint (addr
, len
, type
);
1098 /* Don't exit the loop, try to insert
1099 every value on the value chain. That's
1100 because we will be removing all the
1101 watches below, and removing a
1102 watchpoint we didn't insert could have
1110 /* Failure to insert a watchpoint on any memory value in the
1111 value chain brings us here. */
1114 remove_breakpoint (bpt
, mark_uninserted
);
1115 *hw_breakpoint_error
= 1;
1116 fprintf_unfiltered (tmp_error_stream
,
1117 "Could not insert hardware watchpoint %d.\n",
1118 bpt
->owner
->number
);
1124 printf_filtered (_("\
1125 Hardware watchpoint %d deleted because the program has left the block \n\
1126 in which its expression is valid.\n"),
1127 bpt
->owner
->number
);
1128 if (bpt
->owner
->related_breakpoint
)
1129 bpt
->owner
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
1130 bpt
->owner
->disposition
= disp_del_at_next_stop
;
1133 /* Restore the selected frame. */
1134 select_frame (frame_find_by_id (saved_frame_id
));
1139 else if (bpt
->owner
->type
== bp_catch_fork
1140 || bpt
->owner
->type
== bp_catch_vfork
1141 || bpt
->owner
->type
== bp_catch_exec
)
1143 struct gdb_exception e
= catch_exception (uiout
, insert_catchpoint
,
1144 bpt
->owner
, RETURN_MASK_ERROR
);
1145 exception_fprintf (gdb_stderr
, e
, "warning: inserting catchpoint %d: ",
1146 bpt
->owner
->number
);
1148 bpt
->owner
->enable_state
= bp_disabled
;
1152 /* We've already printed an error message if there was a problem
1153 inserting this catchpoint, and we've disabled the catchpoint,
1154 so just return success. */
1161 /* insert_breakpoints is used when starting or continuing the program.
1162 remove_breakpoints is used when the program stops.
1163 Both return zero if successful,
1164 or an `errno' value if could not write the inferior. */
1167 insert_breakpoints (void)
1169 struct bp_location
*b
, *temp
;
1172 int disabled_breaks
= 0;
1173 int hw_breakpoint_error
= 0;
1174 int process_warning
= 0;
1176 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1177 make_cleanup_ui_file_delete (tmp_error_stream
);
1179 /* Explicitly mark the warning -- this will only be printed if
1180 there was an error. */
1181 fprintf_unfiltered (tmp_error_stream
, "Warning:\n");
1183 ALL_BP_LOCATIONS_SAFE (b
, temp
)
1185 if (!breakpoint_enabled (b
->owner
))
1188 /* There is no point inserting thread-specific breakpoints if the
1189 thread no longer exists. */
1190 if (b
->owner
->thread
!= -1
1191 && !valid_thread_id (b
->owner
->thread
))
1194 /* FIXME drow/2003-10-07: This code should be pushed elsewhere when
1195 hardware watchpoints are split into multiple loc breakpoints. */
1196 if ((b
->loc_type
== bp_loc_hardware_watchpoint
1197 || b
->owner
->type
== bp_watchpoint
) && !b
->owner
->val
)
1200 val
= evaluate_expression (b
->owner
->exp
);
1201 release_value (val
);
1202 if (value_lazy (val
))
1203 value_fetch_lazy (val
);
1204 b
->owner
->val
= val
;
1207 val
= insert_bp_location (b
, tmp_error_stream
,
1208 &disabled_breaks
, &process_warning
,
1209 &hw_breakpoint_error
);
1216 /* If a hardware breakpoint or watchpoint was inserted, add a
1217 message about possibly exhausted resources. */
1218 if (hw_breakpoint_error
)
1220 fprintf_unfiltered (tmp_error_stream
,
1221 "Could not insert hardware breakpoints:\n\
1222 You may have requested too many hardware breakpoints/watchpoints.\n");
1224 #ifdef ONE_PROCESS_WRITETEXT
1225 if (process_warning
)
1226 fprintf_unfiltered (tmp_error_stream
,
1227 "The same program may be running in another process.");
1229 target_terminal_ours_for_output ();
1230 error_stream (tmp_error_stream
);
1235 remove_breakpoints (void)
1237 struct bp_location
*b
;
1240 ALL_BP_LOCATIONS (b
)
1244 val
= remove_breakpoint (b
, mark_uninserted
);
1253 remove_hw_watchpoints (void)
1255 struct bp_location
*b
;
1258 ALL_BP_LOCATIONS (b
)
1260 if (b
->inserted
&& b
->loc_type
== bp_loc_hardware_watchpoint
)
1262 val
= remove_breakpoint (b
, mark_uninserted
);
1271 reattach_breakpoints (int pid
)
1273 struct bp_location
*b
;
1275 struct cleanup
*old_chain
= save_inferior_ptid ();
1276 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1277 int dummy1
= 0, dummy2
= 0, dummy3
= 0;
1279 make_cleanup_ui_file_delete (tmp_error_stream
);
1281 inferior_ptid
= pid_to_ptid (pid
);
1282 ALL_BP_LOCATIONS (b
)
1287 val
= insert_bp_location (b
, tmp_error_stream
,
1288 &dummy1
, &dummy2
, &dummy3
);
1291 do_cleanups (old_chain
);
1296 do_cleanups (old_chain
);
1301 update_breakpoints_after_exec (void)
1303 struct breakpoint
*b
;
1304 struct breakpoint
*temp
;
1306 /* Doing this first prevents the badness of having delete_breakpoint()
1307 write a breakpoint's current "shadow contents" to lift the bp. That
1308 shadow is NOT valid after an exec()! */
1309 mark_breakpoints_out ();
1311 ALL_BREAKPOINTS_SAFE (b
, temp
)
1313 /* Solib breakpoints must be explicitly reset after an exec(). */
1314 if (b
->type
== bp_shlib_event
)
1316 delete_breakpoint (b
);
1320 /* Thread event breakpoints must be set anew after an exec(),
1321 as must overlay event breakpoints. */
1322 if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
1324 delete_breakpoint (b
);
1328 /* Step-resume breakpoints are meaningless after an exec(). */
1329 if (b
->type
== bp_step_resume
)
1331 delete_breakpoint (b
);
1335 /* Don't delete an exec catchpoint, because else the inferior
1336 won't stop when it ought!
1338 Similarly, we probably ought to keep vfork catchpoints, 'cause
1339 on this target, we may not be able to stop when the vfork is
1340 seen, but only when the subsequent exec is seen. (And because
1341 deleting fork catchpoints here but not vfork catchpoints will
1342 seem mysterious to users, keep those too.) */
1343 if ((b
->type
== bp_catch_exec
) ||
1344 (b
->type
== bp_catch_vfork
) ||
1345 (b
->type
== bp_catch_fork
))
1350 /* bp_finish is a special case. The only way we ought to be able
1351 to see one of these when an exec() has happened, is if the user
1352 caught a vfork, and then said "finish". Ordinarily a finish just
1353 carries them to the call-site of the current callee, by setting
1354 a temporary bp there and resuming. But in this case, the finish
1355 will carry them entirely through the vfork & exec.
1357 We don't want to allow a bp_finish to remain inserted now. But
1358 we can't safely delete it, 'cause finish_command has a handle to
1359 the bp on a bpstat, and will later want to delete it. There's a
1360 chance (and I've seen it happen) that if we delete the bp_finish
1361 here, that its storage will get reused by the time finish_command
1362 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1363 We really must allow finish_command to delete a bp_finish.
1365 In the absense of a general solution for the "how do we know
1366 it's safe to delete something others may have handles to?"
1367 problem, what we'll do here is just uninsert the bp_finish, and
1368 let finish_command delete it.
1370 (We know the bp_finish is "doomed" in the sense that it's
1371 momentary, and will be deleted as soon as finish_command sees
1372 the inferior stopped. So it doesn't matter that the bp's
1373 address is probably bogus in the new a.out, unlike e.g., the
1374 solib breakpoints.) */
1376 if (b
->type
== bp_finish
)
1381 /* Without a symbolic address, we have little hope of the
1382 pre-exec() address meaning the same thing in the post-exec()
1384 if (b
->addr_string
== NULL
)
1386 delete_breakpoint (b
);
1390 /* FIXME what about longjmp breakpoints? Re-create them here? */
1391 create_overlay_event_breakpoint ("_ovly_debug_event");
1395 detach_breakpoints (int pid
)
1397 struct bp_location
*b
;
1399 struct cleanup
*old_chain
= save_inferior_ptid ();
1401 if (pid
== PIDGET (inferior_ptid
))
1402 error (_("Cannot detach breakpoints of inferior_ptid"));
1404 /* Set inferior_ptid; remove_breakpoint uses this global. */
1405 inferior_ptid
= pid_to_ptid (pid
);
1406 ALL_BP_LOCATIONS (b
)
1410 val
= remove_breakpoint (b
, mark_inserted
);
1413 do_cleanups (old_chain
);
1418 do_cleanups (old_chain
);
1423 remove_breakpoint (struct bp_location
*b
, insertion_state_t is
)
1427 if (b
->owner
->enable_state
== bp_permanent
)
1428 /* Permanent breakpoints cannot be inserted or removed. */
1431 if (b
->owner
->type
== bp_none
)
1432 warning (_("attempted to remove apparently deleted breakpoint #%d?"),
1435 if (b
->loc_type
== bp_loc_software_breakpoint
1436 || b
->loc_type
== bp_loc_hardware_breakpoint
)
1438 /* "Normal" instruction breakpoint: either the standard
1439 trap-instruction bp (bp_breakpoint), or a
1440 bp_hardware_breakpoint. */
1442 /* First check to see if we have to handle an overlay. */
1443 if (overlay_debugging
== ovly_off
1444 || b
->section
== NULL
1445 || !(section_is_overlay (b
->section
)))
1447 /* No overlay handling: just remove the breakpoint. */
1449 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1450 val
= target_remove_hw_breakpoint (&b
->target_info
);
1452 val
= target_remove_breakpoint (&b
->target_info
);
1456 /* This breakpoint is in an overlay section.
1457 Did we set a breakpoint at the LMA? */
1458 if (!overlay_events_enabled
)
1460 /* Yes -- overlay event support is not active, so we
1461 should have set a breakpoint at the LMA. Remove it.
1463 /* Ignore any failures: if the LMA is in ROM, we will
1464 have already warned when we failed to insert it. */
1465 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1466 target_remove_hw_breakpoint (&b
->overlay_target_info
);
1468 target_remove_breakpoint (&b
->overlay_target_info
);
1470 /* Did we set a breakpoint at the VMA?
1471 If so, we will have marked the breakpoint 'inserted'. */
1474 /* Yes -- remove it. Previously we did not bother to
1475 remove the breakpoint if the section had been
1476 unmapped, but let's not rely on that being safe. We
1477 don't know what the overlay manager might do. */
1478 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1479 val
= target_remove_hw_breakpoint (&b
->target_info
);
1481 /* However, we should remove *software* breakpoints only
1482 if the section is still mapped, or else we overwrite
1483 wrong code with the saved shadow contents. */
1484 else if (section_is_mapped (b
->section
))
1485 val
= target_remove_breakpoint (&b
->target_info
);
1491 /* No -- not inserted, so no need to remove. No error. */
1497 b
->inserted
= (is
== mark_inserted
);
1499 else if (b
->loc_type
== bp_loc_hardware_watchpoint
1500 && breakpoint_enabled (b
->owner
)
1506 b
->inserted
= (is
== mark_inserted
);
1507 /* Walk down the saved value chain. */
1508 for (v
= b
->owner
->val_chain
; v
; v
= value_next (v
))
1510 /* For each memory reference remove the watchpoint
1512 if (VALUE_LVAL (v
) == lval_memory
1513 && ! value_lazy (v
))
1515 struct type
*vtype
= check_typedef (value_type (v
));
1517 if (v
== b
->owner
->val_chain
1518 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1519 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1524 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1525 len
= TYPE_LENGTH (value_type (v
));
1527 if (b
->owner
->type
== bp_read_watchpoint
)
1529 else if (b
->owner
->type
== bp_access_watchpoint
)
1532 val
= target_remove_watchpoint (addr
, len
, type
);
1539 /* Failure to remove any of the hardware watchpoints comes here. */
1540 if ((is
== mark_uninserted
) && (b
->inserted
))
1541 warning (_("Could not remove hardware watchpoint %d."),
1544 else if ((b
->owner
->type
== bp_catch_fork
||
1545 b
->owner
->type
== bp_catch_vfork
||
1546 b
->owner
->type
== bp_catch_exec
)
1547 && breakpoint_enabled (b
->owner
)
1551 switch (b
->owner
->type
)
1554 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1556 case bp_catch_vfork
:
1557 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1560 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1563 warning (_("Internal error, %s line %d."), __FILE__
, __LINE__
);
1568 b
->inserted
= (is
== mark_inserted
);
1574 /* Clear the "inserted" flag in all breakpoints. */
1577 mark_breakpoints_out (void)
1579 struct bp_location
*bpt
;
1581 ALL_BP_LOCATIONS (bpt
)
1585 /* Clear the "inserted" flag in all breakpoints and delete any
1586 breakpoints which should go away between runs of the program.
1588 Plus other such housekeeping that has to be done for breakpoints
1591 Note: this function gets called at the end of a run (by
1592 generic_mourn_inferior) and when a run begins (by
1593 init_wait_for_inferior). */
1598 breakpoint_init_inferior (enum inf_context context
)
1600 struct breakpoint
*b
, *temp
;
1601 struct bp_location
*bpt
;
1603 ALL_BP_LOCATIONS (bpt
)
1606 ALL_BREAKPOINTS_SAFE (b
, temp
)
1611 case bp_watchpoint_scope
:
1613 /* If the call dummy breakpoint is at the entry point it will
1614 cause problems when the inferior is rerun, so we better
1617 Also get rid of scope breakpoints. */
1618 delete_breakpoint (b
);
1622 case bp_hardware_watchpoint
:
1623 case bp_read_watchpoint
:
1624 case bp_access_watchpoint
:
1626 /* Likewise for watchpoints on local expressions. */
1627 if (b
->exp_valid_block
!= NULL
)
1628 delete_breakpoint (b
);
1629 else if (context
== inf_starting
)
1631 /* Reset val field to force reread of starting value
1632 in insert_breakpoints. */
1634 value_free (b
->val
);
1644 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1645 exists at PC. It returns ordinary_breakpoint_here if it's an
1646 ordinary breakpoint, or permanent_breakpoint_here if it's a
1647 permanent breakpoint.
1648 - When continuing from a location with an ordinary breakpoint, we
1649 actually single step once before calling insert_breakpoints.
1650 - When continuing from a localion with a permanent breakpoint, we
1651 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1652 the target, to advance the PC past the breakpoint. */
1654 enum breakpoint_here
1655 breakpoint_here_p (CORE_ADDR pc
)
1657 const struct bp_location
*bpt
;
1658 int any_breakpoint_here
= 0;
1660 ALL_BP_LOCATIONS (bpt
)
1662 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1663 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1666 if ((breakpoint_enabled (bpt
->owner
)
1667 || bpt
->owner
->enable_state
== bp_permanent
)
1668 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1670 if (overlay_debugging
1671 && section_is_overlay (bpt
->section
)
1672 && !section_is_mapped (bpt
->section
))
1673 continue; /* unmapped overlay -- can't be a match */
1674 else if (bpt
->owner
->enable_state
== bp_permanent
)
1675 return permanent_breakpoint_here
;
1677 any_breakpoint_here
= 1;
1681 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1685 /* Returns non-zero if there's a breakpoint inserted at PC, which is
1686 inserted using regular breakpoint_chain/bp_location_chain mechanism.
1687 This does not check for single-step breakpoints, which are
1688 inserted and removed using direct target manipulation. */
1691 regular_breakpoint_inserted_here_p (CORE_ADDR pc
)
1693 const struct bp_location
*bpt
;
1695 ALL_BP_LOCATIONS (bpt
)
1697 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1698 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1702 && bpt
->address
== pc
) /* bp is inserted and matches pc */
1704 if (overlay_debugging
1705 && section_is_overlay (bpt
->section
)
1706 && !section_is_mapped (bpt
->section
))
1707 continue; /* unmapped overlay -- can't be a match */
1715 /* Returns non-zero iff there's either regular breakpoint
1716 or a single step breakpoint inserted at PC. */
1719 breakpoint_inserted_here_p (CORE_ADDR pc
)
1721 if (regular_breakpoint_inserted_here_p (pc
))
1724 if (single_step_breakpoint_inserted_here_p (pc
))
1730 /* This function returns non-zero iff there is a software breakpoint
1734 software_breakpoint_inserted_here_p (CORE_ADDR pc
)
1736 const struct bp_location
*bpt
;
1737 int any_breakpoint_here
= 0;
1739 ALL_BP_LOCATIONS (bpt
)
1741 if (bpt
->loc_type
!= bp_loc_software_breakpoint
)
1745 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1747 if (overlay_debugging
1748 && section_is_overlay (bpt
->section
)
1749 && !section_is_mapped (bpt
->section
))
1750 continue; /* unmapped overlay -- can't be a match */
1756 /* Also check for software single-step breakpoints. */
1757 if (single_step_breakpoint_inserted_here_p (pc
))
1763 /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
1764 PC is valid for process/thread PTID. */
1767 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1769 const struct bp_location
*bpt
;
1772 thread
= pid_to_thread_id (ptid
);
1774 ALL_BP_LOCATIONS (bpt
)
1776 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1777 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1780 if ((breakpoint_enabled (bpt
->owner
)
1781 || bpt
->owner
->enable_state
== bp_permanent
)
1782 && bpt
->address
== pc
1783 && (bpt
->owner
->thread
== -1 || bpt
->owner
->thread
== thread
))
1785 if (overlay_debugging
1786 && section_is_overlay (bpt
->section
)
1787 && !section_is_mapped (bpt
->section
))
1788 continue; /* unmapped overlay -- can't be a match */
1798 /* bpstat stuff. External routines' interfaces are documented
1802 ep_is_catchpoint (struct breakpoint
*ep
)
1805 (ep
->type
== bp_catch_load
)
1806 || (ep
->type
== bp_catch_unload
)
1807 || (ep
->type
== bp_catch_fork
)
1808 || (ep
->type
== bp_catch_vfork
)
1809 || (ep
->type
== bp_catch_exec
);
1811 /* ??rehrauer: Add more kinds here, as are implemented... */
1815 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1818 (ep
->type
== bp_catch_load
)
1819 || (ep
->type
== bp_catch_unload
);
1823 bpstat_free (bpstat bs
)
1825 if (bs
->old_val
!= NULL
)
1826 value_free (bs
->old_val
);
1827 free_command_lines (&bs
->commands
);
1831 /* Clear a bpstat so that it says we are not at any breakpoint.
1832 Also free any storage that is part of a bpstat. */
1835 bpstat_clear (bpstat
*bsp
)
1852 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1853 is part of the bpstat is copied as well. */
1856 bpstat_copy (bpstat bs
)
1860 bpstat retval
= NULL
;
1865 for (; bs
!= NULL
; bs
= bs
->next
)
1867 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1868 memcpy (tmp
, bs
, sizeof (*tmp
));
1869 if (bs
->commands
!= NULL
)
1870 tmp
->commands
= copy_command_lines (bs
->commands
);
1871 if (bs
->old_val
!= NULL
)
1872 tmp
->old_val
= value_copy (bs
->old_val
);
1875 /* This is the first thing in the chain. */
1885 /* Find the bpstat associated with this breakpoint */
1888 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1893 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1895 if (bsp
->breakpoint_at
&& bsp
->breakpoint_at
->owner
== breakpoint
)
1901 /* Find a step_resume breakpoint associated with this bpstat.
1902 (If there are multiple step_resume bp's on the list, this function
1903 will arbitrarily pick one.)
1905 It is an error to use this function if BPSTAT doesn't contain a
1906 step_resume breakpoint.
1908 See wait_for_inferior's use of this function. */
1910 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1914 gdb_assert (bsp
!= NULL
);
1916 current_thread
= pid_to_thread_id (inferior_ptid
);
1918 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1920 if ((bsp
->breakpoint_at
!= NULL
) &&
1921 (bsp
->breakpoint_at
->owner
->type
== bp_step_resume
) &&
1922 (bsp
->breakpoint_at
->owner
->thread
== current_thread
||
1923 bsp
->breakpoint_at
->owner
->thread
== -1))
1924 return bsp
->breakpoint_at
->owner
;
1927 internal_error (__FILE__
, __LINE__
, _("No step_resume breakpoint found."));
1931 /* Put in *NUM the breakpoint number of the first breakpoint we are stopped
1932 at. *BSP upon return is a bpstat which points to the remaining
1933 breakpoints stopped at (but which is not guaranteed to be good for
1934 anything but further calls to bpstat_num).
1935 Return 0 if passed a bpstat which does not indicate any breakpoints.
1936 Return -1 if stopped at a breakpoint that has been deleted since
1938 Return 1 otherwise. */
1941 bpstat_num (bpstat
*bsp
, int *num
)
1943 struct breakpoint
*b
;
1946 return 0; /* No more breakpoint values */
1948 /* We assume we'll never have several bpstats that
1949 correspond to a single breakpoint -- otherwise,
1950 this function might return the same number more
1951 than once and this will look ugly. */
1952 b
= (*bsp
)->breakpoint_at
? (*bsp
)->breakpoint_at
->owner
: NULL
;
1953 *bsp
= (*bsp
)->next
;
1955 return -1; /* breakpoint that's been deleted since */
1957 *num
= b
->number
; /* We have its number */
1961 /* Modify BS so that the actions will not be performed. */
1964 bpstat_clear_actions (bpstat bs
)
1966 for (; bs
!= NULL
; bs
= bs
->next
)
1968 free_command_lines (&bs
->commands
);
1969 if (bs
->old_val
!= NULL
)
1971 value_free (bs
->old_val
);
1977 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1979 cleanup_executing_breakpoints (void *ignore
)
1981 executing_breakpoint_commands
= 0;
1984 /* Execute all the commands associated with all the breakpoints at this
1985 location. Any of these commands could cause the process to proceed
1986 beyond this point, etc. We look out for such changes by checking
1987 the global "breakpoint_proceeded" after each command. */
1990 bpstat_do_actions (bpstat
*bsp
)
1993 struct cleanup
*old_chain
;
1995 /* Avoid endless recursion if a `source' command is contained
1997 if (executing_breakpoint_commands
)
2000 executing_breakpoint_commands
= 1;
2001 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
2004 /* Note that (as of this writing), our callers all appear to
2005 be passing us the address of global stop_bpstat. And, if
2006 our calls to execute_control_command cause the inferior to
2007 proceed, that global (and hence, *bsp) will change.
2009 We must be careful to not touch *bsp unless the inferior
2010 has not proceeded. */
2012 /* This pointer will iterate over the list of bpstat's. */
2015 breakpoint_proceeded
= 0;
2016 for (; bs
!= NULL
; bs
= bs
->next
)
2018 struct command_line
*cmd
;
2019 struct cleanup
*this_cmd_tree_chain
;
2021 /* Take ownership of the BSP's command tree, if it has one.
2023 The command tree could legitimately contain commands like
2024 'step' and 'next', which call clear_proceed_status, which
2025 frees stop_bpstat's command tree. To make sure this doesn't
2026 free the tree we're executing out from under us, we need to
2027 take ownership of the tree ourselves. Since a given bpstat's
2028 commands are only executed once, we don't need to copy it; we
2029 can clear the pointer in the bpstat, and make sure we free
2030 the tree when we're done. */
2033 this_cmd_tree_chain
= make_cleanup_free_command_lines (&cmd
);
2037 execute_control_command (cmd
);
2039 if (breakpoint_proceeded
)
2045 /* We can free this command tree now. */
2046 do_cleanups (this_cmd_tree_chain
);
2048 if (breakpoint_proceeded
)
2049 /* The inferior is proceeded by the command; bomb out now.
2050 The bpstat chain has been blown away by wait_for_inferior.
2051 But since execution has stopped again, there is a new bpstat
2052 to look at, so start over. */
2055 do_cleanups (old_chain
);
2058 /* This is the normal print function for a bpstat. In the future,
2059 much of this logic could (should?) be moved to bpstat_stop_status,
2060 by having it set different print_it values.
2062 Current scheme: When we stop, bpstat_print() is called. It loops
2063 through the bpstat list of things causing this stop, calling the
2064 print_bp_stop_message function on each one. The behavior of the
2065 print_bp_stop_message function depends on the print_it field of
2066 bpstat. If such field so indicates, call this function here.
2068 Return values from this routine (ultimately used by bpstat_print()
2069 and normal_stop() to decide what to do):
2070 PRINT_NOTHING: Means we already printed all we needed to print,
2071 don't print anything else.
2072 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
2073 that something to be followed by a location.
2074 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
2075 that something to be followed by a location.
2076 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
2079 static enum print_stop_action
2080 print_it_typical (bpstat bs
)
2082 struct cleanup
*old_chain
, *ui_out_chain
;
2083 struct breakpoint
*b
;
2084 const struct bp_location
*bl
;
2085 struct ui_stream
*stb
;
2086 stb
= ui_out_stream_new (uiout
);
2087 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
2088 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
2089 which has since been deleted. */
2090 if (bs
->breakpoint_at
== NULL
)
2091 return PRINT_UNKNOWN
;
2092 bl
= bs
->breakpoint_at
;
2098 case bp_hardware_breakpoint
:
2099 if (bl
->address
!= bl
->requested_address
)
2100 breakpoint_adjustment_warning (bl
->requested_address
,
2103 annotate_breakpoint (b
->number
);
2104 ui_out_text (uiout
, "\nBreakpoint ");
2105 if (ui_out_is_mi_like_p (uiout
))
2106 ui_out_field_string (uiout
, "reason",
2107 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT
));
2108 ui_out_field_int (uiout
, "bkptno", b
->number
);
2109 ui_out_text (uiout
, ", ");
2110 return PRINT_SRC_AND_LOC
;
2113 case bp_shlib_event
:
2114 /* Did we stop because the user set the stop_on_solib_events
2115 variable? (If so, we report this as a generic, "Stopped due
2116 to shlib event" message.) */
2117 printf_filtered (_("Stopped due to shared library event\n"));
2118 return PRINT_NOTHING
;
2121 case bp_thread_event
:
2122 /* Not sure how we will get here.
2123 GDB should not stop for these breakpoints. */
2124 printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
2125 return PRINT_NOTHING
;
2128 case bp_overlay_event
:
2129 /* By analogy with the thread event, GDB should not stop for these. */
2130 printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
2131 return PRINT_NOTHING
;
2135 annotate_catchpoint (b
->number
);
2136 printf_filtered (_("\nCatchpoint %d (loaded %s), "),
2138 b
->triggered_dll_pathname
);
2139 return PRINT_SRC_AND_LOC
;
2142 case bp_catch_unload
:
2143 annotate_catchpoint (b
->number
);
2144 printf_filtered (_("\nCatchpoint %d (unloaded %s), "),
2146 b
->triggered_dll_pathname
);
2147 return PRINT_SRC_AND_LOC
;
2151 annotate_catchpoint (b
->number
);
2152 printf_filtered (_("\nCatchpoint %d (forked process %d), "),
2154 b
->forked_inferior_pid
);
2155 return PRINT_SRC_AND_LOC
;
2158 case bp_catch_vfork
:
2159 annotate_catchpoint (b
->number
);
2160 printf_filtered (_("\nCatchpoint %d (vforked process %d), "),
2162 b
->forked_inferior_pid
);
2163 return PRINT_SRC_AND_LOC
;
2167 annotate_catchpoint (b
->number
);
2168 printf_filtered (_("\nCatchpoint %d (exec'd %s), "),
2171 return PRINT_SRC_AND_LOC
;
2175 case bp_hardware_watchpoint
:
2176 if (bs
->old_val
!= NULL
)
2178 annotate_watchpoint (b
->number
);
2179 if (ui_out_is_mi_like_p (uiout
))
2182 async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER
));
2184 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2185 ui_out_text (uiout
, "\nOld value = ");
2186 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2187 ui_out_field_stream (uiout
, "old", stb
);
2188 ui_out_text (uiout
, "\nNew value = ");
2189 value_print (b
->val
, stb
->stream
, 0, Val_pretty_default
);
2190 ui_out_field_stream (uiout
, "new", stb
);
2191 do_cleanups (ui_out_chain
);
2192 ui_out_text (uiout
, "\n");
2193 value_free (bs
->old_val
);
2196 /* More than one watchpoint may have been triggered. */
2197 return PRINT_UNKNOWN
;
2200 case bp_read_watchpoint
:
2201 if (ui_out_is_mi_like_p (uiout
))
2204 async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER
));
2206 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2207 ui_out_text (uiout
, "\nValue = ");
2208 value_print (b
->val
, stb
->stream
, 0, Val_pretty_default
);
2209 ui_out_field_stream (uiout
, "value", stb
);
2210 do_cleanups (ui_out_chain
);
2211 ui_out_text (uiout
, "\n");
2212 return PRINT_UNKNOWN
;
2215 case bp_access_watchpoint
:
2216 if (bs
->old_val
!= NULL
)
2218 annotate_watchpoint (b
->number
);
2219 if (ui_out_is_mi_like_p (uiout
))
2222 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2224 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2225 ui_out_text (uiout
, "\nOld value = ");
2226 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2227 ui_out_field_stream (uiout
, "old", stb
);
2228 value_free (bs
->old_val
);
2230 ui_out_text (uiout
, "\nNew value = ");
2235 if (ui_out_is_mi_like_p (uiout
))
2238 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2239 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2240 ui_out_text (uiout
, "\nValue = ");
2242 value_print (b
->val
, stb
->stream
, 0,Val_pretty_default
);
2243 ui_out_field_stream (uiout
, "new", stb
);
2244 do_cleanups (ui_out_chain
);
2245 ui_out_text (uiout
, "\n");
2246 return PRINT_UNKNOWN
;
2249 /* Fall through, we don't deal with these types of breakpoints
2253 if (ui_out_is_mi_like_p (uiout
))
2256 async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED
));
2257 return PRINT_UNKNOWN
;
2261 if (ui_out_is_mi_like_p (uiout
))
2264 async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED
));
2265 return PRINT_UNKNOWN
;
2270 case bp_longjmp_resume
:
2271 case bp_step_resume
:
2272 case bp_watchpoint_scope
:
2275 return PRINT_UNKNOWN
;
2279 /* Generic routine for printing messages indicating why we
2280 stopped. The behavior of this function depends on the value
2281 'print_it' in the bpstat structure. Under some circumstances we
2282 may decide not to print anything here and delegate the task to
2285 static enum print_stop_action
2286 print_bp_stop_message (bpstat bs
)
2288 switch (bs
->print_it
)
2291 /* Nothing should be printed for this bpstat entry. */
2292 return PRINT_UNKNOWN
;
2296 /* We still want to print the frame, but we already printed the
2297 relevant messages. */
2298 return PRINT_SRC_AND_LOC
;
2301 case print_it_normal
:
2303 const struct bp_location
*bl
= bs
->breakpoint_at
;
2304 struct breakpoint
*b
= bl
? bl
->owner
: NULL
;
2306 /* Normal case. Call the breakpoint's print_it method, or
2307 print_it_typical. */
2308 /* FIXME: how breakpoint can ever be NULL here? */
2309 if (b
!= NULL
&& b
->ops
!= NULL
&& b
->ops
->print_it
!= NULL
)
2310 return b
->ops
->print_it (b
);
2312 return print_it_typical (bs
);
2317 internal_error (__FILE__
, __LINE__
,
2318 _("print_bp_stop_message: unrecognized enum value"));
2323 /* Print a message indicating what happened. This is called from
2324 normal_stop(). The input to this routine is the head of the bpstat
2325 list - a list of the eventpoints that caused this stop. This
2326 routine calls the generic print routine for printing a message
2327 about reasons for stopping. This will print (for example) the
2328 "Breakpoint n," part of the output. The return value of this
2331 PRINT_UNKNOWN: Means we printed nothing
2332 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2333 code to print the location. An example is
2334 "Breakpoint 1, " which should be followed by
2336 PRINT_SRC_ONLY: Means we printed something, but there is no need
2337 to also print the location part of the message.
2338 An example is the catch/throw messages, which
2339 don't require a location appended to the end.
2340 PRINT_NOTHING: We have done some printing and we don't need any
2341 further info to be printed.*/
2343 enum print_stop_action
2344 bpstat_print (bpstat bs
)
2348 /* Maybe another breakpoint in the chain caused us to stop.
2349 (Currently all watchpoints go on the bpstat whether hit or not.
2350 That probably could (should) be changed, provided care is taken
2351 with respect to bpstat_explains_signal). */
2352 for (; bs
; bs
= bs
->next
)
2354 val
= print_bp_stop_message (bs
);
2355 if (val
== PRINT_SRC_ONLY
2356 || val
== PRINT_SRC_AND_LOC
2357 || val
== PRINT_NOTHING
)
2361 /* We reached the end of the chain, or we got a null BS to start
2362 with and nothing was printed. */
2363 return PRINT_UNKNOWN
;
2366 /* Evaluate the expression EXP and return 1 if value is zero.
2367 This is used inside a catch_errors to evaluate the breakpoint condition.
2368 The argument is a "struct expression *" that has been cast to char * to
2369 make it pass through catch_errors. */
2372 breakpoint_cond_eval (void *exp
)
2374 struct value
*mark
= value_mark ();
2375 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2376 value_free_to_mark (mark
);
2380 /* Allocate a new bpstat and chain it to the current one. */
2383 bpstat_alloc (const struct bp_location
*bl
, bpstat cbs
/* Current "bs" value */ )
2387 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2389 bs
->breakpoint_at
= bl
;
2390 /* If the condition is false, etc., don't do the commands. */
2391 bs
->commands
= NULL
;
2393 bs
->print_it
= print_it_normal
;
2397 /* The target has stopped with waitstatus WS. Check if any hardware
2398 watchpoints have triggered, according to the target. */
2401 watchpoints_triggered (struct target_waitstatus
*ws
)
2403 int stopped_by_watchpoint
= STOPPED_BY_WATCHPOINT (*ws
);
2405 struct breakpoint
*b
;
2407 if (!stopped_by_watchpoint
)
2409 /* We were not stopped by a watchpoint. Mark all watchpoints
2410 as not triggered. */
2412 if (b
->type
== bp_hardware_watchpoint
2413 || b
->type
== bp_read_watchpoint
2414 || b
->type
== bp_access_watchpoint
)
2415 b
->watchpoint_triggered
= watch_triggered_no
;
2420 if (!target_stopped_data_address (¤t_target
, &addr
))
2422 /* We were stopped by a watchpoint, but we don't know where.
2423 Mark all watchpoints as unknown. */
2425 if (b
->type
== bp_hardware_watchpoint
2426 || b
->type
== bp_read_watchpoint
2427 || b
->type
== bp_access_watchpoint
)
2428 b
->watchpoint_triggered
= watch_triggered_unknown
;
2430 return stopped_by_watchpoint
;
2433 /* The target could report the data address. Mark watchpoints
2434 affected by this data address as triggered, and all others as not
2438 if (b
->type
== bp_hardware_watchpoint
2439 || b
->type
== bp_read_watchpoint
2440 || b
->type
== bp_access_watchpoint
)
2444 b
->watchpoint_triggered
= watch_triggered_no
;
2445 for (v
= b
->val_chain
; v
; v
= value_next (v
))
2447 if (VALUE_LVAL (v
) == lval_memory
&& ! value_lazy (v
))
2449 struct type
*vtype
= check_typedef (value_type (v
));
2451 if (v
== b
->val_chain
2452 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2453 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2457 vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
2458 /* Exact match not required. Within range is
2461 && addr
< vaddr
+ TYPE_LENGTH (value_type (v
)))
2463 b
->watchpoint_triggered
= watch_triggered_yes
;
2474 /* Possible return values for watchpoint_check (this can't be an enum
2475 because of check_errors). */
2476 /* The watchpoint has been deleted. */
2477 #define WP_DELETED 1
2478 /* The value has changed. */
2479 #define WP_VALUE_CHANGED 2
2480 /* The value has not changed. */
2481 #define WP_VALUE_NOT_CHANGED 3
2483 #define BP_TEMPFLAG 1
2484 #define BP_HARDWAREFLAG 2
2486 /* Check watchpoint condition. */
2489 watchpoint_check (void *p
)
2491 bpstat bs
= (bpstat
) p
;
2492 struct breakpoint
*b
;
2493 struct frame_info
*fr
;
2494 int within_current_scope
;
2496 b
= bs
->breakpoint_at
->owner
;
2498 if (b
->exp_valid_block
== NULL
)
2499 within_current_scope
= 1;
2502 /* There is no current frame at this moment. If we're going to have
2503 any chance of handling watchpoints on local variables, we'll need
2504 the frame chain (so we can determine if we're in scope). */
2505 reinit_frame_cache ();
2506 fr
= frame_find_by_id (b
->watchpoint_frame
);
2507 within_current_scope
= (fr
!= NULL
);
2509 /* If we've gotten confused in the unwinder, we might have
2510 returned a frame that can't describe this variable. */
2511 if (within_current_scope
2512 && block_function (b
->exp_valid_block
) != get_frame_function (fr
))
2513 within_current_scope
= 0;
2515 /* in_function_epilogue_p() returns a non-zero value if we're still
2516 in the function but the stack frame has already been invalidated.
2517 Since we can't rely on the values of local variables after the
2518 stack has been destroyed, we are treating the watchpoint in that
2519 state as `not changed' without further checking.
2521 vinschen/2003-09-04: The former implementation left out the case
2522 that the watchpoint frame couldn't be found by frame_find_by_id()
2523 because the current PC is currently in an epilogue. Calling
2524 gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */
2525 if ((!within_current_scope
|| fr
== get_current_frame ())
2526 && gdbarch_in_function_epilogue_p (current_gdbarch
, read_pc ()))
2527 return WP_VALUE_NOT_CHANGED
;
2528 if (fr
&& within_current_scope
)
2529 /* If we end up stopping, the current frame will get selected
2530 in normal_stop. So this call to select_frame won't affect
2535 if (within_current_scope
)
2537 /* We use value_{,free_to_}mark because it could be a
2538 *long* time before we return to the command level and
2539 call free_all_values. We can't call free_all_values because
2540 we might be in the middle of evaluating a function call. */
2542 struct value
*mark
= value_mark ();
2543 struct value
*new_val
= evaluate_expression (b
->exp
);
2544 if (!value_equal (b
->val
, new_val
))
2546 release_value (new_val
);
2547 value_free_to_mark (mark
);
2548 bs
->old_val
= b
->val
;
2550 /* We will stop here */
2551 return WP_VALUE_CHANGED
;
2555 /* Nothing changed, don't do anything. */
2556 value_free_to_mark (mark
);
2557 /* We won't stop here */
2558 return WP_VALUE_NOT_CHANGED
;
2563 /* This seems like the only logical thing to do because
2564 if we temporarily ignored the watchpoint, then when
2565 we reenter the block in which it is valid it contains
2566 garbage (in the case of a function, it may have two
2567 garbage values, one before and one after the prologue).
2568 So we can't even detect the first assignment to it and
2569 watch after that (since the garbage may or may not equal
2570 the first value assigned). */
2571 /* We print all the stop information in print_it_typical(), but
2572 in this case, by the time we call print_it_typical() this bp
2573 will be deleted already. So we have no choice but print the
2574 information here. */
2575 if (ui_out_is_mi_like_p (uiout
))
2577 (uiout
, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE
));
2578 ui_out_text (uiout
, "\nWatchpoint ");
2579 ui_out_field_int (uiout
, "wpnum", b
->number
);
2580 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2581 which its expression is valid.\n");
2583 if (b
->related_breakpoint
)
2584 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2585 b
->disposition
= disp_del_at_next_stop
;
2591 /* Get a bpstat associated with having just stopped at address
2592 BP_ADDR in thread PTID.
2594 Determine whether we stopped at a breakpoint, etc, or whether we
2595 don't understand this stop. Result is a chain of bpstat's such that:
2597 if we don't understand the stop, the result is a null pointer.
2599 if we understand why we stopped, the result is not null.
2601 Each element of the chain refers to a particular breakpoint or
2602 watchpoint at which we have stopped. (We may have stopped for
2603 several reasons concurrently.)
2605 Each element of the chain has valid next, breakpoint_at,
2606 commands, FIXME??? fields. */
2609 bpstat_stop_status (CORE_ADDR bp_addr
, ptid_t ptid
)
2611 struct breakpoint
*b
= NULL
;
2612 const struct bp_location
*bl
;
2613 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2614 int real_breakpoint
= 0;
2615 /* Root of the chain of bpstat's */
2616 struct bpstats root_bs
[1];
2617 /* Pointer to the last thing in the chain currently. */
2618 bpstat bs
= root_bs
;
2619 int thread_id
= pid_to_thread_id (ptid
);
2621 ALL_BP_LOCATIONS (bl
)
2625 if (!breakpoint_enabled (b
) && b
->enable_state
!= bp_permanent
)
2628 if (b
->type
!= bp_watchpoint
2629 && b
->type
!= bp_hardware_watchpoint
2630 && b
->type
!= bp_read_watchpoint
2631 && b
->type
!= bp_access_watchpoint
2632 && b
->type
!= bp_hardware_breakpoint
2633 && b
->type
!= bp_catch_fork
2634 && b
->type
!= bp_catch_vfork
2635 && b
->type
!= bp_catch_exec
) /* a non-watchpoint bp */
2637 if (bl
->address
!= bp_addr
) /* address doesn't match */
2639 if (overlay_debugging
/* unmapped overlay section */
2640 && section_is_overlay (bl
->section
)
2641 && !section_is_mapped (bl
->section
))
2645 /* Continuable hardware watchpoints are treated as non-existent if the
2646 reason we stopped wasn't a hardware watchpoint (we didn't stop on
2647 some data address). Otherwise gdb won't stop on a break instruction
2648 in the code (not from a breakpoint) when a hardware watchpoint has
2649 been defined. Also skip watchpoints which we know did not trigger
2650 (did not match the data address). */
2652 if ((b
->type
== bp_hardware_watchpoint
2653 || b
->type
== bp_read_watchpoint
2654 || b
->type
== bp_access_watchpoint
)
2655 && b
->watchpoint_triggered
== watch_triggered_no
)
2658 if (b
->type
== bp_hardware_breakpoint
)
2660 if (bl
->address
!= bp_addr
)
2662 if (overlay_debugging
/* unmapped overlay section */
2663 && section_is_overlay (bl
->section
)
2664 && !section_is_mapped (bl
->section
))
2668 /* Is this a catchpoint of a load or unload? If so, did we
2669 get a load or unload of the specified library? If not,
2671 if ((b
->type
== bp_catch_load
)
2672 #if defined(SOLIB_HAVE_LOAD_EVENT)
2673 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2674 || ((b
->dll_pathname
!= NULL
)
2675 && (strcmp (b
->dll_pathname
,
2676 SOLIB_LOADED_LIBRARY_PATHNAME (
2677 PIDGET (inferior_ptid
)))
2683 if ((b
->type
== bp_catch_unload
)
2684 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2685 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2686 || ((b
->dll_pathname
!= NULL
)
2687 && (strcmp (b
->dll_pathname
,
2688 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2689 PIDGET (inferior_ptid
)))
2695 if ((b
->type
== bp_catch_fork
)
2696 && !inferior_has_forked (PIDGET (inferior_ptid
),
2697 &b
->forked_inferior_pid
))
2700 if ((b
->type
== bp_catch_vfork
)
2701 && !inferior_has_vforked (PIDGET (inferior_ptid
),
2702 &b
->forked_inferior_pid
))
2705 if ((b
->type
== bp_catch_exec
)
2706 && !inferior_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2709 /* Come here if it's a watchpoint, or if the break address matches */
2711 bs
= bpstat_alloc (bl
, bs
); /* Alloc a bpstat to explain stop */
2713 /* Watchpoints may change this, if not found to have triggered. */
2717 if (b
->type
== bp_watchpoint
2718 || b
->type
== bp_read_watchpoint
2719 || b
->type
== bp_access_watchpoint
2720 || b
->type
== bp_hardware_watchpoint
)
2724 int must_check_value
= 0;
2726 if (b
->type
== bp_watchpoint
)
2727 /* For a software watchpoint, we must always check the
2729 must_check_value
= 1;
2730 else if (b
->watchpoint_triggered
== watch_triggered_yes
)
2731 /* We have a hardware watchpoint (read, write, or access)
2732 and the target earlier reported an address watched by
2734 must_check_value
= 1;
2735 else if (b
->watchpoint_triggered
== watch_triggered_unknown
2736 && b
->type
== bp_hardware_watchpoint
)
2737 /* We were stopped by a hardware watchpoint, but the target could
2738 not report the data address. We must check the watchpoint's
2739 value. Access and read watchpoints are out of luck; without
2740 a data address, we can't figure it out. */
2741 must_check_value
= 1;
2743 if (must_check_value
)
2745 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2747 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2748 int e
= catch_errors (watchpoint_check
, bs
, message
,
2750 do_cleanups (cleanups
);
2754 /* We've already printed what needs to be printed. */
2755 bs
->print_it
= print_it_done
;
2758 case WP_VALUE_CHANGED
:
2759 if (b
->type
== bp_read_watchpoint
)
2761 /* Don't stop: read watchpoints shouldn't fire if
2762 the value has changed. This is for targets
2763 which cannot set read-only watchpoints. */
2764 bs
->print_it
= print_it_noop
;
2770 case WP_VALUE_NOT_CHANGED
:
2771 if (b
->type
== bp_hardware_watchpoint
2772 || b
->type
== bp_watchpoint
)
2774 /* Don't stop: write watchpoints shouldn't fire if
2775 the value hasn't changed. */
2776 bs
->print_it
= print_it_noop
;
2786 /* Error from catch_errors. */
2787 printf_filtered (_("Watchpoint %d deleted.\n"), b
->number
);
2788 if (b
->related_breakpoint
)
2789 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2790 b
->disposition
= disp_del_at_next_stop
;
2791 /* We've already printed what needs to be printed. */
2792 bs
->print_it
= print_it_done
;
2796 else /* must_check_value == 0 */
2798 /* This is a case where some watchpoint(s) triggered, but
2799 not at the address of this watchpoint, or else no
2800 watchpoint triggered after all. So don't print
2801 anything for this watchpoint. */
2802 bs
->print_it
= print_it_noop
;
2809 /* By definition, an encountered breakpoint is a triggered
2813 real_breakpoint
= 1;
2816 if (frame_id_p (b
->frame_id
)
2817 && !frame_id_eq (b
->frame_id
, get_frame_id (get_current_frame ())))
2821 int value_is_zero
= 0;
2823 /* If this is a scope breakpoint, mark the associated
2824 watchpoint as triggered so that we will handle the
2825 out-of-scope event. We'll get to the watchpoint next
2827 if (b
->type
== bp_watchpoint_scope
)
2828 b
->related_breakpoint
->watchpoint_triggered
= watch_triggered_yes
;
2832 /* Need to select the frame, with all that implies
2833 so that the conditions will have the right context. */
2834 select_frame (get_current_frame ());
2836 = catch_errors (breakpoint_cond_eval
, (bl
->cond
),
2837 "Error in testing breakpoint condition:\n",
2839 /* FIXME-someday, should give breakpoint # */
2842 if (bl
->cond
&& value_is_zero
)
2845 /* Don't consider this a hit. */
2848 else if (b
->thread
!= -1 && b
->thread
!= thread_id
)
2851 /* Don't consider this a hit. */
2854 else if (b
->ignore_count
> 0)
2857 annotate_ignore_count_change ();
2860 else if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
2861 /* We do not stop for these. */
2865 /* We will stop here */
2866 if (b
->disposition
== disp_disable
)
2867 b
->enable_state
= bp_disabled
;
2870 bs
->commands
= b
->commands
;
2872 (strcmp ("silent", bs
->commands
->line
) == 0
2873 || (xdb_commands
&& strcmp ("Q", bs
->commands
->line
) == 0)))
2875 bs
->commands
= bs
->commands
->next
;
2878 bs
->commands
= copy_command_lines (bs
->commands
);
2881 /* Print nothing for this entry if we dont stop or if we dont print. */
2882 if (bs
->stop
== 0 || bs
->print
== 0)
2883 bs
->print_it
= print_it_noop
;
2886 bs
->next
= NULL
; /* Terminate the chain */
2887 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2889 /* If we aren't stopping, the value of some hardware watchpoint may
2890 not have changed, but the intermediate memory locations we are
2891 watching may have. Don't bother if we're stopping; this will get
2893 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2898 for (bs
= root_bs
->next
; bs
!= NULL
; bs
= bs
->next
)
2900 && (bs
->breakpoint_at
->owner
->type
== bp_hardware_watchpoint
2901 || bs
->breakpoint_at
->owner
->type
== bp_read_watchpoint
2902 || bs
->breakpoint_at
->owner
->type
== bp_access_watchpoint
))
2904 remove_breakpoints ();
2905 insert_breakpoints ();
2909 return root_bs
->next
;
2912 /* Tell what to do about this bpstat. */
2914 bpstat_what (bpstat bs
)
2916 /* Classify each bpstat as one of the following. */
2919 /* This bpstat element has no effect on the main_action. */
2922 /* There was a watchpoint, stop but don't print. */
2925 /* There was a watchpoint, stop and print. */
2928 /* There was a breakpoint but we're not stopping. */
2931 /* There was a breakpoint, stop but don't print. */
2934 /* There was a breakpoint, stop and print. */
2937 /* We hit the longjmp breakpoint. */
2940 /* We hit the longjmp_resume breakpoint. */
2943 /* We hit the step_resume breakpoint. */
2946 /* We hit the shared library event breakpoint. */
2949 /* We caught a shared library event. */
2952 /* This is just used to count how many enums there are. */
2956 /* Here is the table which drives this routine. So that we can
2957 format it pretty, we define some abbreviations for the
2958 enum bpstat_what codes. */
2959 #define kc BPSTAT_WHAT_KEEP_CHECKING
2960 #define ss BPSTAT_WHAT_STOP_SILENT
2961 #define sn BPSTAT_WHAT_STOP_NOISY
2962 #define sgl BPSTAT_WHAT_SINGLE
2963 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2964 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2965 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2966 #define sr BPSTAT_WHAT_STEP_RESUME
2967 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2968 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2970 /* "Can't happen." Might want to print an error message.
2971 abort() is not out of the question, but chances are GDB is just
2972 a bit confused, not unusable. */
2973 #define err BPSTAT_WHAT_STOP_NOISY
2975 /* Given an old action and a class, come up with a new action. */
2976 /* One interesting property of this table is that wp_silent is the same
2977 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2978 after stopping, the check for whether to step over a breakpoint
2979 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2980 reference to how we stopped. We retain separate wp_silent and
2981 bp_silent codes in case we want to change that someday.
2983 Another possibly interesting property of this table is that
2984 there's a partial ordering, priority-like, of the actions. Once
2985 you've decided that some action is appropriate, you'll never go
2986 back and decide something of a lower priority is better. The
2989 kc < clr sgl shl shlr slr sn sr ss
2990 sgl < clrs shl shlr slr sn sr ss
2991 slr < err shl shlr sn sr ss
2992 clr < clrs err shl shlr sn sr ss
2993 clrs < err shl shlr sn sr ss
3000 What I think this means is that we don't need a damned table
3001 here. If you just put the rows and columns in the right order,
3002 it'd look awfully regular. We could simply walk the bpstat list
3003 and choose the highest priority action we find, with a little
3004 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
3005 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
3006 is messy anyway). */
3008 /* step_resume entries: a step resume breakpoint overrides another
3009 breakpoint of signal handling (see comment in wait_for_inferior
3010 at where we set the step_resume breakpoint). */
3012 static const enum bpstat_what_main_action
3013 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
3016 /* kc ss sn sgl slr clr clrs sr shl shlr
3019 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, shl
, shlr
},
3021 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3023 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3025 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, shl
, shlr
},
3027 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3029 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3031 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, shl
, shlr
},
3033 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, shl
, shlr
},
3035 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
},
3037 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, sr
, shl
, shlr
},
3039 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, sr
, shlr
, shlr
}
3054 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
3055 struct bpstat_what retval
;
3057 retval
.call_dummy
= 0;
3058 for (; bs
!= NULL
; bs
= bs
->next
)
3060 enum class bs_class
= no_effect
;
3061 if (bs
->breakpoint_at
== NULL
)
3062 /* I suspect this can happen if it was a momentary breakpoint
3063 which has since been deleted. */
3065 switch (bs
->breakpoint_at
->owner
->type
)
3071 case bp_hardware_breakpoint
:
3077 bs_class
= bp_noisy
;
3079 bs_class
= bp_silent
;
3082 bs_class
= bp_nostop
;
3085 case bp_hardware_watchpoint
:
3086 case bp_read_watchpoint
:
3087 case bp_access_watchpoint
:
3091 bs_class
= wp_noisy
;
3093 bs_class
= wp_silent
;
3096 /* There was a watchpoint, but we're not stopping.
3097 This requires no further action. */
3098 bs_class
= no_effect
;
3101 bs_class
= long_jump
;
3103 case bp_longjmp_resume
:
3104 bs_class
= long_resume
;
3106 case bp_step_resume
:
3109 bs_class
= step_resume
;
3112 /* It is for the wrong frame. */
3113 bs_class
= bp_nostop
;
3115 case bp_watchpoint_scope
:
3116 bs_class
= bp_nostop
;
3118 case bp_shlib_event
:
3119 bs_class
= shlib_event
;
3121 case bp_thread_event
:
3122 case bp_overlay_event
:
3123 bs_class
= bp_nostop
;
3126 case bp_catch_unload
:
3127 /* Only if this catchpoint triggered should we cause the
3128 step-out-of-dld behaviour. Otherwise, we ignore this
3131 bs_class
= catch_shlib_event
;
3133 bs_class
= no_effect
;
3136 case bp_catch_vfork
:
3141 bs_class
= bp_noisy
;
3143 bs_class
= bp_silent
;
3146 /* There was a catchpoint, but we're not stopping.
3147 This requires no further action. */
3148 bs_class
= no_effect
;
3151 /* Make sure the action is stop (silent or noisy),
3152 so infrun.c pops the dummy frame. */
3153 bs_class
= bp_silent
;
3154 retval
.call_dummy
= 1;
3157 current_action
= table
[(int) bs_class
][(int) current_action
];
3159 retval
.main_action
= current_action
;
3163 /* Nonzero if we should step constantly (e.g. watchpoints on machines
3164 without hardware support). This isn't related to a specific bpstat,
3165 just to things like whether watchpoints are set. */
3168 bpstat_should_step (void)
3170 struct breakpoint
*b
;
3172 if (breakpoint_enabled (b
) && b
->type
== bp_watchpoint
)
3177 /* Nonzero if there are enabled hardware watchpoints. */
3179 bpstat_have_active_hw_watchpoints (void)
3181 const struct bp_location
*bpt
;
3182 ALL_BP_LOCATIONS (bpt
)
3183 if (breakpoint_enabled (bpt
->owner
)
3185 && bpt
->loc_type
== bp_loc_hardware_watchpoint
)
3191 /* Given a bpstat that records zero or more triggered eventpoints, this
3192 function returns another bpstat which contains only the catchpoints
3193 on that first list, if any. */
3195 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3197 struct bpstats root_bs
[1];
3198 bpstat bs
= root_bs
;
3199 struct breakpoint
*ep
;
3202 bpstat_clear (cp_list
);
3203 root_bs
->next
= NULL
;
3205 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3207 /* Is this eventpoint a catchpoint? If not, ignore it. */
3208 ep
= ep_list
->breakpoint_at
->owner
;
3211 if ((ep
->type
!= bp_catch_load
) &&
3212 (ep
->type
!= bp_catch_unload
))
3213 /* pai: (temp) ADD fork/vfork here!! */
3216 /* Yes; add it to the list. */
3217 bs
= bpstat_alloc (ep_list
->breakpoint_at
, bs
);
3222 #if defined(SOLIB_ADD)
3223 /* Also, for each triggered catchpoint, tag it with the name of
3224 the library that caused this trigger. (We copy the name now,
3225 because it's only guaranteed to be available NOW, when the
3226 catchpoint triggers. Clients who may wish to know the name
3227 later must get it from the catchpoint itself.) */
3228 if (ep
->triggered_dll_pathname
!= NULL
)
3229 xfree (ep
->triggered_dll_pathname
);
3230 if (ep
->type
== bp_catch_load
)
3231 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3232 PIDGET (inferior_ptid
));
3234 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3235 PIDGET (inferior_ptid
));
3237 dll_pathname
= NULL
;
3241 ep
->triggered_dll_pathname
= (char *)
3242 xmalloc (strlen (dll_pathname
) + 1);
3243 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3246 ep
->triggered_dll_pathname
= NULL
;
3252 static void print_breakpoint_location (struct breakpoint
*b
,
3253 struct bp_location
*loc
,
3255 struct ui_stream
*stb
)
3260 = find_pc_sect_function (loc
->address
, loc
->section
);
3263 ui_out_text (uiout
, "in ");
3264 ui_out_field_string (uiout
, "func",
3265 SYMBOL_PRINT_NAME (sym
));
3266 ui_out_wrap_hint (uiout
, wrap_indent
);
3267 ui_out_text (uiout
, " at ");
3269 ui_out_field_string (uiout
, "file", b
->source_file
);
3270 ui_out_text (uiout
, ":");
3272 if (ui_out_is_mi_like_p (uiout
))
3274 struct symtab_and_line sal
= find_pc_line (loc
->address
, 0);
3275 char *fullname
= symtab_to_fullname (sal
.symtab
);
3278 ui_out_field_string (uiout
, "fullname", fullname
);
3281 ui_out_field_int (uiout
, "line", b
->line_number
);
3285 ui_out_field_string (uiout
, "pending", b
->addr_string
);
3289 print_address_symbolic (loc
->address
, stb
->stream
, demangle
, "");
3290 ui_out_field_stream (uiout
, "at", stb
);
3294 /* Print B to gdb_stdout. */
3296 print_one_breakpoint_location (struct breakpoint
*b
,
3297 struct bp_location
*loc
,
3299 CORE_ADDR
*last_addr
)
3301 struct command_line
*l
;
3303 struct ep_type_description
3308 static struct ep_type_description bptypes
[] =
3310 {bp_none
, "?deleted?"},
3311 {bp_breakpoint
, "breakpoint"},
3312 {bp_hardware_breakpoint
, "hw breakpoint"},
3313 {bp_until
, "until"},
3314 {bp_finish
, "finish"},
3315 {bp_watchpoint
, "watchpoint"},
3316 {bp_hardware_watchpoint
, "hw watchpoint"},
3317 {bp_read_watchpoint
, "read watchpoint"},
3318 {bp_access_watchpoint
, "acc watchpoint"},
3319 {bp_longjmp
, "longjmp"},
3320 {bp_longjmp_resume
, "longjmp resume"},
3321 {bp_step_resume
, "step resume"},
3322 {bp_watchpoint_scope
, "watchpoint scope"},
3323 {bp_call_dummy
, "call dummy"},
3324 {bp_shlib_event
, "shlib events"},
3325 {bp_thread_event
, "thread events"},
3326 {bp_overlay_event
, "overlay events"},
3327 {bp_catch_load
, "catch load"},
3328 {bp_catch_unload
, "catch unload"},
3329 {bp_catch_fork
, "catch fork"},
3330 {bp_catch_vfork
, "catch vfork"},
3331 {bp_catch_exec
, "catch exec"}
3334 static char *bpdisps
[] =
3335 {"del", "dstp", "dis", "keep"};
3336 static char bpenables
[] = "nynny";
3337 char wrap_indent
[80];
3338 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3339 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3340 struct cleanup
*bkpt_chain
;
3342 int header_of_multiple
= 0;
3343 int part_of_multiple
= (loc
!= NULL
);
3345 gdb_assert (!loc
|| loc_number
!= 0);
3346 /* See comment in print_one_breakpoint concerning
3347 treatment of breakpoints with single disabled
3351 && (b
->loc
->next
!= NULL
|| !b
->loc
->enabled
)))
3352 header_of_multiple
= 1;
3357 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "bkpt");
3361 if (part_of_multiple
)
3364 formatted
= xstrprintf ("%d.%d", b
->number
, loc_number
);
3365 ui_out_field_string (uiout
, "number", formatted
);
3370 ui_out_field_int (uiout
, "number", b
->number
);
3375 if (part_of_multiple
)
3376 ui_out_field_skip (uiout
, "type");
3379 if (((int) b
->type
>= (sizeof (bptypes
) / sizeof (bptypes
[0])))
3380 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3381 internal_error (__FILE__
, __LINE__
,
3382 _("bptypes table does not describe type #%d."),
3384 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3389 if (part_of_multiple
)
3390 ui_out_field_skip (uiout
, "disp");
3392 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3397 if (part_of_multiple
)
3398 ui_out_field_string (uiout
, "enabled",
3400 ? (loc
->enabled
? "y(p)" : "n(p)")
3401 : (loc
->enabled
? "y" : "n"));
3404 int pending
= (b
->loc
== NULL
|| b
->loc
->shlib_disabled
);
3405 /* For header of multiple, there's no point showing pending
3406 state -- it will be apparent from the locations. */
3407 if (header_of_multiple
)
3409 ui_out_field_fmt (uiout
, "enabled", "%c%s",
3410 bpenables
[(int) b
->enable_state
],
3411 pending
? "(p)" : "");
3413 ui_out_spaces (uiout
, 3);
3418 strcpy (wrap_indent
, " ");
3421 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3422 strcat (wrap_indent
, " ");
3424 strcat (wrap_indent
, " ");
3427 if (b
->ops
!= NULL
&& b
->ops
->print_one
!= NULL
)
3429 /* Although the print_one can possibly print
3430 all locations, calling it here is not likely
3431 to get any nice result. So, make sure there's
3432 just one location. */
3433 gdb_assert (b
->loc
== NULL
|| b
->loc
->next
== NULL
);
3434 b
->ops
->print_one (b
, last_addr
);
3440 internal_error (__FILE__
, __LINE__
,
3441 _("print_one_breakpoint: bp_none encountered\n"));
3445 case bp_hardware_watchpoint
:
3446 case bp_read_watchpoint
:
3447 case bp_access_watchpoint
:
3448 /* Field 4, the address, is omitted (which makes the columns
3449 not line up too nicely with the headers, but the effect
3450 is relatively readable). */
3452 ui_out_field_skip (uiout
, "addr");
3454 print_expression (b
->exp
, stb
->stream
);
3455 ui_out_field_stream (uiout
, "what", stb
);
3459 case bp_catch_unload
:
3460 /* Field 4, the address, is omitted (which makes the columns
3461 not line up too nicely with the headers, but the effect
3462 is relatively readable). */
3464 ui_out_field_skip (uiout
, "addr");
3466 if (b
->dll_pathname
== NULL
)
3468 ui_out_field_string (uiout
, "what", "<any library>");
3469 ui_out_spaces (uiout
, 1);
3473 ui_out_text (uiout
, "library \"");
3474 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3475 ui_out_text (uiout
, "\" ");
3480 case bp_catch_vfork
:
3481 /* Field 4, the address, is omitted (which makes the columns
3482 not line up too nicely with the headers, but the effect
3483 is relatively readable). */
3485 ui_out_field_skip (uiout
, "addr");
3487 if (b
->forked_inferior_pid
!= 0)
3489 ui_out_text (uiout
, "process ");
3490 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3491 ui_out_spaces (uiout
, 1);
3496 /* Field 4, the address, is omitted (which makes the columns
3497 not line up too nicely with the headers, but the effect
3498 is relatively readable). */
3500 ui_out_field_skip (uiout
, "addr");
3502 if (b
->exec_pathname
!= NULL
)
3504 ui_out_text (uiout
, "program \"");
3505 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3506 ui_out_text (uiout
, "\" ");
3511 case bp_hardware_breakpoint
:
3515 case bp_longjmp_resume
:
3516 case bp_step_resume
:
3517 case bp_watchpoint_scope
:
3519 case bp_shlib_event
:
3520 case bp_thread_event
:
3521 case bp_overlay_event
:
3526 ui_out_field_string (uiout
, "addr", "<PENDING>");
3527 else if (header_of_multiple
)
3528 ui_out_field_string (uiout
, "addr", "<MULTIPLE>");
3530 ui_out_field_core_addr (uiout
, "addr", loc
->address
);
3533 if (!header_of_multiple
)
3534 print_breakpoint_location (b
, loc
, wrap_indent
, stb
);
3536 *last_addr
= b
->loc
->address
;
3540 if (!part_of_multiple
&& b
->thread
!= -1)
3542 /* FIXME: This seems to be redundant and lost here; see the
3543 "stop only in" line a little further down. */
3544 ui_out_text (uiout
, " thread ");
3545 ui_out_field_int (uiout
, "thread", b
->thread
);
3548 ui_out_text (uiout
, "\n");
3550 if (part_of_multiple
&& frame_id_p (b
->frame_id
))
3553 ui_out_text (uiout
, "\tstop only in stack frame at ");
3554 /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
3556 ui_out_field_core_addr (uiout
, "frame", b
->frame_id
.stack_addr
);
3557 ui_out_text (uiout
, "\n");
3560 if (!part_of_multiple
&& b
->cond_string
&& !ada_exception_catchpoint_p (b
))
3562 /* We do not print the condition for Ada exception catchpoints
3563 because the condition is an internal implementation detail
3564 that we do not want to expose to the user. */
3566 ui_out_text (uiout
, "\tstop only if ");
3567 ui_out_field_string (uiout
, "cond", b
->cond_string
);
3568 ui_out_text (uiout
, "\n");
3571 if (!part_of_multiple
&& b
->thread
!= -1)
3573 /* FIXME should make an annotation for this */
3574 ui_out_text (uiout
, "\tstop only in thread ");
3575 ui_out_field_int (uiout
, "thread", b
->thread
);
3576 ui_out_text (uiout
, "\n");
3579 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
)
3581 /* FIXME should make an annotation for this */
3582 if (ep_is_catchpoint (b
))
3583 ui_out_text (uiout
, "\tcatchpoint");
3585 ui_out_text (uiout
, "\tbreakpoint");
3586 ui_out_text (uiout
, " already hit ");
3587 ui_out_field_int (uiout
, "times", b
->hit_count
);
3588 if (b
->hit_count
== 1)
3589 ui_out_text (uiout
, " time\n");
3591 ui_out_text (uiout
, " times\n");
3594 /* Output the count also if it is zero, but only if this is
3595 mi. FIXME: Should have a better test for this. */
3596 if (ui_out_is_mi_like_p (uiout
))
3597 if (!part_of_multiple
&& show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3598 ui_out_field_int (uiout
, "times", b
->hit_count
);
3600 if (!part_of_multiple
&& b
->ignore_count
)
3603 ui_out_text (uiout
, "\tignore next ");
3604 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3605 ui_out_text (uiout
, " hits\n");
3608 if (!part_of_multiple
&& (l
= b
->commands
))
3610 struct cleanup
*script_chain
;
3613 script_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "script");
3614 print_command_lines (uiout
, l
, 4);
3615 do_cleanups (script_chain
);
3617 do_cleanups (bkpt_chain
);
3618 do_cleanups (old_chain
);
3622 print_one_breakpoint (struct breakpoint
*b
,
3623 CORE_ADDR
*last_addr
)
3625 print_one_breakpoint_location (b
, NULL
, 0, last_addr
);
3627 /* If this breakpoint has custom print function,
3628 it's already printed. Otherwise, print individual
3629 locations, if any. */
3630 if (b
->ops
== NULL
|| b
->ops
->print_one
== NULL
)
3632 /* If breakpoint has a single location that is
3633 disabled, we print it as if it had
3634 several locations, since otherwise it's hard to
3635 represent "breakpoint enabled, location disabled"
3638 && (b
->loc
->next
|| !b
->loc
->enabled
)
3639 && !ui_out_is_mi_like_p (uiout
))
3641 struct bp_location
*loc
;
3643 for (loc
= b
->loc
; loc
; loc
= loc
->next
, ++n
)
3644 print_one_breakpoint_location (b
, loc
, n
, last_addr
);
3650 struct captured_breakpoint_query_args
3656 do_captured_breakpoint_query (struct ui_out
*uiout
, void *data
)
3658 struct captured_breakpoint_query_args
*args
= data
;
3659 struct breakpoint
*b
;
3660 CORE_ADDR dummy_addr
= 0;
3663 if (args
->bnum
== b
->number
)
3665 print_one_breakpoint (b
, &dummy_addr
);
3673 gdb_breakpoint_query (struct ui_out
*uiout
, int bnum
, char **error_message
)
3675 struct captured_breakpoint_query_args args
;
3677 /* For the moment we don't trust print_one_breakpoint() to not throw
3679 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint_query
, &args
,
3680 error_message
, RETURN_MASK_ALL
) < 0)
3686 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3687 catchpoints, et.al.). */
3690 user_settable_breakpoint (const struct breakpoint
*b
)
3692 return (b
->type
== bp_breakpoint
3693 || b
->type
== bp_catch_load
3694 || b
->type
== bp_catch_unload
3695 || b
->type
== bp_catch_fork
3696 || b
->type
== bp_catch_vfork
3697 || b
->type
== bp_catch_exec
3698 || b
->type
== bp_hardware_breakpoint
3699 || b
->type
== bp_watchpoint
3700 || b
->type
== bp_read_watchpoint
3701 || b
->type
== bp_access_watchpoint
3702 || b
->type
== bp_hardware_watchpoint
);
3705 /* Print information on user settable breakpoint (watchpoint, etc)
3706 number BNUM. If BNUM is -1 print all user settable breakpoints.
3707 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3710 breakpoint_1 (int bnum
, int allflag
)
3712 struct breakpoint
*b
;
3713 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3714 int nr_printable_breakpoints
;
3715 struct cleanup
*bkpttbl_chain
;
3717 /* Compute the number of rows in the table. */
3718 nr_printable_breakpoints
= 0;
3721 || bnum
== b
->number
)
3723 if (allflag
|| user_settable_breakpoint (b
))
3724 nr_printable_breakpoints
++;
3729 = make_cleanup_ui_out_table_begin_end (uiout
, 6, nr_printable_breakpoints
,
3733 = make_cleanup_ui_out_table_begin_end (uiout
, 5, nr_printable_breakpoints
,
3736 if (nr_printable_breakpoints
> 0)
3737 annotate_breakpoints_headers ();
3738 if (nr_printable_breakpoints
> 0)
3740 ui_out_table_header (uiout
, 7, ui_left
, "number", "Num"); /* 1 */
3741 if (nr_printable_breakpoints
> 0)
3743 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3744 if (nr_printable_breakpoints
> 0)
3746 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3747 if (nr_printable_breakpoints
> 0)
3749 ui_out_table_header (uiout
, 4, ui_left
, "enabled", "Enb"); /* 4 */
3752 if (nr_printable_breakpoints
> 0)
3754 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3755 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3757 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3759 if (nr_printable_breakpoints
> 0)
3761 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3762 ui_out_table_body (uiout
);
3763 if (nr_printable_breakpoints
> 0)
3764 annotate_breakpoints_table ();
3768 || bnum
== b
->number
)
3770 /* We only print out user settable breakpoints unless the
3772 if (allflag
|| user_settable_breakpoint (b
))
3773 print_one_breakpoint (b
, &last_addr
);
3776 do_cleanups (bkpttbl_chain
);
3778 if (nr_printable_breakpoints
== 0)
3781 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3783 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3788 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3789 that a comparison of an unsigned with -1 is always false. */
3790 if (last_addr
!= (CORE_ADDR
) -1 && !server_command
)
3791 set_next_address (last_addr
);
3794 /* FIXME? Should this be moved up so that it is only called when
3795 there have been breakpoints? */
3796 annotate_breakpoints_table_end ();
3800 breakpoints_info (char *bnum_exp
, int from_tty
)
3805 bnum
= parse_and_eval_long (bnum_exp
);
3807 breakpoint_1 (bnum
, 0);
3811 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3816 bnum
= parse_and_eval_long (bnum_exp
);
3818 breakpoint_1 (bnum
, 1);
3822 breakpoint_has_pc (struct breakpoint
*b
, CORE_ADDR pc
, asection
*section
)
3824 struct bp_location
*bl
= b
->loc
;
3825 for (; bl
; bl
= bl
->next
)
3827 if (bl
->address
== pc
3828 && (!overlay_debugging
|| bl
->section
== section
))
3834 /* Print a message describing any breakpoints set at PC. */
3837 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
, int thread
)
3840 struct breakpoint
*b
;
3843 others
+= breakpoint_has_pc (b
, pc
, section
);
3847 printf_filtered (_("Note: breakpoint "));
3848 else /* if (others == ???) */
3849 printf_filtered (_("Note: breakpoints "));
3851 if (breakpoint_has_pc (b
, pc
, section
))
3854 printf_filtered ("%d", b
->number
);
3855 if (b
->thread
== -1 && thread
!= -1)
3856 printf_filtered (" (all threads)");
3857 else if (b
->thread
!= -1)
3858 printf_filtered (" (thread %d)", b
->thread
);
3859 printf_filtered ("%s%s ",
3860 ((b
->enable_state
== bp_disabled
||
3861 b
->enable_state
== bp_call_disabled
)
3863 : b
->enable_state
== bp_permanent
3867 : ((others
== 1) ? " and" : ""));
3869 printf_filtered (_("also set at pc "));
3870 deprecated_print_address_numeric (pc
, 1, gdb_stdout
);
3871 printf_filtered (".\n");
3875 /* Set the default place to put a breakpoint
3876 for the `break' command with no arguments. */
3879 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3882 default_breakpoint_valid
= valid
;
3883 default_breakpoint_address
= addr
;
3884 default_breakpoint_symtab
= symtab
;
3885 default_breakpoint_line
= line
;
3888 /* Return true iff it is meaningful to use the address member of
3889 BPT. For some breakpoint types, the address member is irrelevant
3890 and it makes no sense to attempt to compare it to other addresses
3891 (or use it for any other purpose either).
3893 More specifically, each of the following breakpoint types will always
3894 have a zero valued address and we don't want check_duplicates() to mark
3895 breakpoints of any of these types to be a duplicate of an actual
3896 breakpoint at address zero:
3899 bp_hardware_watchpoint
3901 bp_access_watchpoint
3908 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3910 enum bptype type
= bpt
->type
;
3912 return (type
!= bp_watchpoint
3913 && type
!= bp_hardware_watchpoint
3914 && type
!= bp_read_watchpoint
3915 && type
!= bp_access_watchpoint
3916 && type
!= bp_catch_exec
3917 && type
!= bp_longjmp_resume
3918 && type
!= bp_catch_fork
3919 && type
!= bp_catch_vfork
);
3922 /* Rescan breakpoints at the same address and section as BPT,
3923 marking the first one as "first" and any others as "duplicates".
3924 This is so that the bpt instruction is only inserted once.
3925 If we have a permanent breakpoint at the same place as BPT, make
3926 that one the official one, and the rest as duplicates. */
3929 check_duplicates_for (CORE_ADDR address
, asection
*section
)
3931 struct bp_location
*b
;
3933 struct bp_location
*perm_bp
= 0;
3935 ALL_BP_LOCATIONS (b
)
3936 if (b
->owner
->enable_state
!= bp_disabled
3937 && b
->owner
->enable_state
!= bp_call_disabled
3939 && !b
->shlib_disabled
3940 && b
->address
== address
/* address / overlay match */
3941 && (!overlay_debugging
|| b
->section
== section
)
3942 && breakpoint_address_is_meaningful (b
->owner
))
3944 /* Have we found a permanent breakpoint? */
3945 if (b
->owner
->enable_state
== bp_permanent
)
3952 b
->duplicate
= count
> 1;
3955 /* If we found a permanent breakpoint at this address, go over the
3956 list again and declare all the other breakpoints there to be the
3960 perm_bp
->duplicate
= 0;
3962 /* Permanent breakpoint should always be inserted. */
3963 if (! perm_bp
->inserted
)
3964 internal_error (__FILE__
, __LINE__
,
3965 _("allegedly permanent breakpoint is not "
3966 "actually inserted"));
3968 ALL_BP_LOCATIONS (b
)
3971 if (b
->owner
->enable_state
!= bp_disabled
3972 && b
->owner
->enable_state
!= bp_call_disabled
3973 && b
->enabled
&& !b
->shlib_disabled
3974 && b
->address
== address
/* address / overlay match */
3975 && (!overlay_debugging
|| b
->section
== section
)
3976 && breakpoint_address_is_meaningful (b
->owner
))
3979 internal_error (__FILE__
, __LINE__
,
3980 _("another breakpoint was inserted on top of "
3981 "a permanent breakpoint"));
3990 check_duplicates (struct breakpoint
*bpt
)
3992 struct bp_location
*bl
= bpt
->loc
;
3994 if (! breakpoint_address_is_meaningful (bpt
))
3997 for (; bl
; bl
= bl
->next
)
3998 check_duplicates_for (bl
->address
, bl
->section
);
4002 breakpoint_adjustment_warning (CORE_ADDR from_addr
, CORE_ADDR to_addr
,
4003 int bnum
, int have_bnum
)
4008 strcpy (astr1
, hex_string_custom ((unsigned long) from_addr
, 8));
4009 strcpy (astr2
, hex_string_custom ((unsigned long) to_addr
, 8));
4011 warning (_("Breakpoint %d address previously adjusted from %s to %s."),
4012 bnum
, astr1
, astr2
);
4014 warning (_("Breakpoint address adjusted from %s to %s."), astr1
, astr2
);
4017 /* Adjust a breakpoint's address to account for architectural constraints
4018 on breakpoint placement. Return the adjusted address. Note: Very
4019 few targets require this kind of adjustment. For most targets,
4020 this function is simply the identity function. */
4023 adjust_breakpoint_address (CORE_ADDR bpaddr
, enum bptype bptype
)
4025 if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch
))
4027 /* Very few targets need any kind of breakpoint adjustment. */
4030 else if (bptype
== bp_watchpoint
4031 || bptype
== bp_hardware_watchpoint
4032 || bptype
== bp_read_watchpoint
4033 || bptype
== bp_access_watchpoint
4034 || bptype
== bp_catch_fork
4035 || bptype
== bp_catch_vfork
4036 || bptype
== bp_catch_exec
)
4038 /* Watchpoints and the various bp_catch_* eventpoints should not
4039 have their addresses modified. */
4044 CORE_ADDR adjusted_bpaddr
;
4046 /* Some targets have architectural constraints on the placement
4047 of breakpoint instructions. Obtain the adjusted address. */
4048 adjusted_bpaddr
= gdbarch_adjust_breakpoint_address (current_gdbarch
,
4051 /* An adjusted breakpoint address can significantly alter
4052 a user's expectations. Print a warning if an adjustment
4054 if (adjusted_bpaddr
!= bpaddr
)
4055 breakpoint_adjustment_warning (bpaddr
, adjusted_bpaddr
, 0, 0);
4057 return adjusted_bpaddr
;
4061 /* Allocate a struct bp_location. */
4063 static struct bp_location
*
4064 allocate_bp_location (struct breakpoint
*bpt
, enum bptype bp_type
)
4066 struct bp_location
*loc
, *loc_p
;
4068 loc
= xmalloc (sizeof (struct bp_location
));
4069 memset (loc
, 0, sizeof (*loc
));
4073 loc
->shlib_disabled
= 0;
4082 case bp_longjmp_resume
:
4083 case bp_step_resume
:
4084 case bp_watchpoint_scope
:
4086 case bp_shlib_event
:
4087 case bp_thread_event
:
4088 case bp_overlay_event
:
4090 case bp_catch_unload
:
4091 loc
->loc_type
= bp_loc_software_breakpoint
;
4093 case bp_hardware_breakpoint
:
4094 loc
->loc_type
= bp_loc_hardware_breakpoint
;
4096 case bp_hardware_watchpoint
:
4097 case bp_read_watchpoint
:
4098 case bp_access_watchpoint
:
4099 loc
->loc_type
= bp_loc_hardware_watchpoint
;
4103 case bp_catch_vfork
:
4105 loc
->loc_type
= bp_loc_other
;
4108 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
4111 /* Add this breakpoint to the end of the chain. */
4113 loc_p
= bp_location_chain
;
4115 bp_location_chain
= loc
;
4118 while (loc_p
->global_next
)
4119 loc_p
= loc_p
->global_next
;
4120 loc_p
->global_next
= loc
;
4126 static void free_bp_location (struct bp_location
*loc
)
4133 /* Helper to set_raw_breakpoint below. Creates a breakpoint
4134 that has type BPTYPE and has no locations as yet. */
4136 static struct breakpoint
*
4137 set_raw_breakpoint_without_location (enum bptype bptype
)
4139 struct breakpoint
*b
, *b1
;
4141 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
4142 memset (b
, 0, sizeof (*b
));
4145 b
->language
= current_language
->la_language
;
4146 b
->input_radix
= input_radix
;
4148 b
->enable_state
= bp_enabled
;
4151 b
->ignore_count
= 0;
4153 b
->frame_id
= null_frame_id
;
4154 b
->dll_pathname
= NULL
;
4155 b
->triggered_dll_pathname
= NULL
;
4156 b
->forked_inferior_pid
= 0;
4157 b
->exec_pathname
= NULL
;
4159 b
->condition_not_parsed
= 0;
4161 /* Add this breakpoint to the end of the chain
4162 so that a list of breakpoints will come out in order
4163 of increasing numbers. */
4165 b1
= breakpoint_chain
;
4167 breakpoint_chain
= b
;
4177 /* Initialize loc->function_name. */
4179 set_breakpoint_location_function (struct bp_location
*loc
)
4181 if (loc
->owner
->type
== bp_breakpoint
4182 || loc
->owner
->type
== bp_hardware_breakpoint
)
4184 find_pc_partial_function (loc
->address
, &(loc
->function_name
),
4186 if (loc
->function_name
)
4187 loc
->function_name
= xstrdup (loc
->function_name
);
4191 /* set_raw_breakpoint is a low level routine for allocating and
4192 partially initializing a breakpoint of type BPTYPE. The newly
4193 created breakpoint's address, section, source file name, and line
4194 number are provided by SAL. The newly created and partially
4195 initialized breakpoint is added to the breakpoint chain and
4196 is also returned as the value of this function.
4198 It is expected that the caller will complete the initialization of
4199 the newly created breakpoint struct as well as output any status
4200 information regarding the creation of a new breakpoint. In
4201 particular, set_raw_breakpoint does NOT set the breakpoint
4202 number! Care should be taken to not allow an error to occur
4203 prior to completing the initialization of the breakpoint. If this
4204 should happen, a bogus breakpoint will be left on the chain. */
4207 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
4209 struct breakpoint
*b
= set_raw_breakpoint_without_location (bptype
);
4210 CORE_ADDR adjusted_address
;
4212 /* Adjust the breakpoint's address prior to allocating a location.
4213 Once we call allocate_bp_location(), that mostly uninitialized
4214 location will be placed on the location chain. Adjustment of the
4215 breakpoint may cause read_memory_nobpt() to be called and we do
4216 not want its scan of the location chain to find a breakpoint and
4217 location that's only been partially initialized. */
4218 adjusted_address
= adjust_breakpoint_address (sal
.pc
, bptype
);
4220 b
->loc
= allocate_bp_location (b
, bptype
);
4221 b
->loc
->requested_address
= sal
.pc
;
4222 b
->loc
->address
= adjusted_address
;
4224 if (sal
.symtab
== NULL
)
4225 b
->source_file
= NULL
;
4227 b
->source_file
= savestring (sal
.symtab
->filename
,
4228 strlen (sal
.symtab
->filename
));
4229 b
->loc
->section
= sal
.section
;
4230 b
->line_number
= sal
.line
;
4232 set_breakpoint_location_function (b
->loc
);
4234 check_duplicates (b
);
4235 breakpoints_changed ();
4241 /* Note that the breakpoint object B describes a permanent breakpoint
4242 instruction, hard-wired into the inferior's code. */
4244 make_breakpoint_permanent (struct breakpoint
*b
)
4246 struct bp_location
*bl
;
4247 b
->enable_state
= bp_permanent
;
4249 /* By definition, permanent breakpoints are already present in the code.
4250 Mark all locations as inserted. For now, make_breakpoint_permanent
4251 is called in just one place, so it's hard to say if it's reasonable
4252 to have permanent breakpoint with multiple locations or not,
4253 but it's easy to implmement. */
4254 for (bl
= b
->loc
; bl
; bl
= bl
->next
)
4258 static struct breakpoint
*
4259 create_internal_breakpoint (CORE_ADDR address
, enum bptype type
)
4261 static int internal_breakpoint_number
= -1;
4262 struct symtab_and_line sal
;
4263 struct breakpoint
*b
;
4265 init_sal (&sal
); /* initialize to zeroes */
4268 sal
.section
= find_pc_overlay (sal
.pc
);
4270 b
= set_raw_breakpoint (sal
, type
);
4271 b
->number
= internal_breakpoint_number
--;
4272 b
->disposition
= disp_donttouch
;
4279 create_longjmp_breakpoint (char *func_name
)
4281 struct breakpoint
*b
;
4282 struct minimal_symbol
*m
;
4284 if (func_name
== NULL
)
4285 b
= create_internal_breakpoint (0, bp_longjmp_resume
);
4288 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4291 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
), bp_longjmp
);
4294 b
->enable_state
= bp_disabled
;
4297 b
->addr_string
= xstrdup (func_name
);
4300 /* Call this routine when stepping and nexting to enable a breakpoint
4301 if we do a longjmp(). When we hit that breakpoint, call
4302 set_longjmp_resume_breakpoint() to figure out where we are going. */
4305 enable_longjmp_breakpoint (void)
4307 struct breakpoint
*b
;
4310 if (b
->type
== bp_longjmp
)
4312 b
->enable_state
= bp_enabled
;
4313 check_duplicates (b
);
4318 disable_longjmp_breakpoint (void)
4320 struct breakpoint
*b
;
4323 if (b
->type
== bp_longjmp
4324 || b
->type
== bp_longjmp_resume
)
4326 b
->enable_state
= bp_disabled
;
4327 check_duplicates (b
);
4332 create_overlay_event_breakpoint (char *func_name
)
4334 struct breakpoint
*b
;
4335 struct minimal_symbol
*m
;
4337 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4340 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
),
4342 b
->addr_string
= xstrdup (func_name
);
4344 if (overlay_debugging
== ovly_auto
)
4346 b
->enable_state
= bp_enabled
;
4347 overlay_events_enabled
= 1;
4351 b
->enable_state
= bp_disabled
;
4352 overlay_events_enabled
= 0;
4357 enable_overlay_breakpoints (void)
4359 struct breakpoint
*b
;
4362 if (b
->type
== bp_overlay_event
)
4364 b
->enable_state
= bp_enabled
;
4365 check_duplicates (b
);
4366 overlay_events_enabled
= 1;
4371 disable_overlay_breakpoints (void)
4373 struct breakpoint
*b
;
4376 if (b
->type
== bp_overlay_event
)
4378 b
->enable_state
= bp_disabled
;
4379 check_duplicates (b
);
4380 overlay_events_enabled
= 0;
4385 create_thread_event_breakpoint (CORE_ADDR address
)
4387 struct breakpoint
*b
;
4389 b
= create_internal_breakpoint (address
, bp_thread_event
);
4391 b
->enable_state
= bp_enabled
;
4392 /* addr_string has to be used or breakpoint_re_set will delete me. */
4393 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4399 remove_thread_event_breakpoints (void)
4401 struct breakpoint
*b
, *temp
;
4403 ALL_BREAKPOINTS_SAFE (b
, temp
)
4404 if (b
->type
== bp_thread_event
)
4405 delete_breakpoint (b
);
4408 struct captured_parse_breakpoint_args
4411 struct symtabs_and_lines
*sals_p
;
4412 char ***addr_string_p
;
4416 struct lang_and_radix
4424 remove_solib_event_breakpoints (void)
4426 struct breakpoint
*b
, *temp
;
4428 ALL_BREAKPOINTS_SAFE (b
, temp
)
4429 if (b
->type
== bp_shlib_event
)
4430 delete_breakpoint (b
);
4434 create_solib_event_breakpoint (CORE_ADDR address
)
4436 struct breakpoint
*b
;
4438 b
= create_internal_breakpoint (address
, bp_shlib_event
);
4442 /* Disable any breakpoints that are on code in shared libraries. Only
4443 apply to enabled breakpoints, disabled ones can just stay disabled. */
4446 disable_breakpoints_in_shlibs (void)
4448 struct bp_location
*loc
;
4449 int disabled_shlib_breaks
= 0;
4451 ALL_BP_LOCATIONS (loc
)
4453 struct breakpoint
*b
= loc
->owner
;
4454 /* We apply the check to all breakpoints, including disabled
4455 for those with loc->duplicate set. This is so that when breakpoint
4456 becomes enabled, or the duplicate is removed, gdb will try to insert
4457 all breakpoints. If we don't set shlib_disabled here, we'll try
4458 to insert those breakpoints and fail. */
4459 if (((b
->type
== bp_breakpoint
) || (b
->type
== bp_hardware_breakpoint
))
4460 && !loc
->shlib_disabled
4462 && PC_SOLIB (loc
->address
)
4464 && solib_address (loc
->address
)
4468 loc
->shlib_disabled
= 1;
4473 /* Disable any breakpoints that are in in an unloaded shared library. Only
4474 apply to enabled breakpoints, disabled ones can just stay disabled. */
4477 disable_breakpoints_in_unloaded_shlib (struct so_list
*solib
)
4479 struct bp_location
*loc
;
4480 int disabled_shlib_breaks
= 0;
4482 ALL_BP_LOCATIONS (loc
)
4484 struct breakpoint
*b
= loc
->owner
;
4485 if ((loc
->loc_type
== bp_loc_hardware_breakpoint
4486 || loc
->loc_type
== bp_loc_software_breakpoint
)
4487 && !loc
->shlib_disabled
)
4490 char *so_name
= PC_SOLIB (loc
->address
);
4492 char *so_name
= solib_address (loc
->address
);
4494 if (so_name
&& !strcmp (so_name
, solib
->so_name
))
4496 loc
->shlib_disabled
= 1;
4497 /* At this point, we cannot rely on remove_breakpoint
4498 succeeding so we must mark the breakpoint as not inserted
4499 to prevent future errors occurring in remove_breakpoints. */
4501 if (!disabled_shlib_breaks
)
4503 target_terminal_ours_for_output ();
4504 warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""),
4507 disabled_shlib_breaks
= 1;
4514 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4515 enum bptype bp_kind
)
4517 struct symtab_and_line sal
;
4518 struct breakpoint
*b
;
4519 int thread
= -1; /* All threads. */
4526 b
= set_raw_breakpoint (sal
, bp_kind
);
4527 set_breakpoint_count (breakpoint_count
+ 1);
4528 b
->number
= breakpoint_count
;
4529 b
->cond_string
= (cond_string
== NULL
) ?
4530 NULL
: savestring (cond_string
, strlen (cond_string
));
4532 b
->addr_string
= NULL
;
4533 b
->enable_state
= bp_enabled
;
4534 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4535 b
->forked_inferior_pid
= 0;
4541 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4543 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4547 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4549 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4553 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4555 struct symtab_and_line sal
;
4556 struct breakpoint
*b
;
4557 int thread
= -1; /* All threads. */
4564 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4565 set_breakpoint_count (breakpoint_count
+ 1);
4566 b
->number
= breakpoint_count
;
4567 b
->cond_string
= (cond_string
== NULL
) ?
4568 NULL
: savestring (cond_string
, strlen (cond_string
));
4570 b
->addr_string
= NULL
;
4571 b
->enable_state
= bp_enabled
;
4572 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4578 hw_breakpoint_used_count (void)
4580 struct breakpoint
*b
;
4585 if (b
->type
== bp_hardware_breakpoint
&& b
->enable_state
== bp_enabled
)
4593 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4595 struct breakpoint
*b
;
4598 *other_type_used
= 0;
4601 if (breakpoint_enabled (b
))
4603 if (b
->type
== type
)
4605 else if ((b
->type
== bp_hardware_watchpoint
||
4606 b
->type
== bp_read_watchpoint
||
4607 b
->type
== bp_access_watchpoint
))
4608 *other_type_used
= 1;
4614 /* Call this after hitting the longjmp() breakpoint. Use this to set
4615 a new breakpoint at the target of the jmp_buf.
4617 FIXME - This ought to be done by setting a temporary breakpoint
4618 that gets deleted automatically... */
4621 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_id frame_id
)
4623 struct breakpoint
*b
;
4626 if (b
->type
== bp_longjmp_resume
)
4628 b
->loc
->requested_address
= pc
;
4629 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4631 b
->enable_state
= bp_enabled
;
4632 b
->frame_id
= frame_id
;
4633 check_duplicates (b
);
4639 disable_watchpoints_before_interactive_call_start (void)
4641 struct breakpoint
*b
;
4645 if (((b
->type
== bp_watchpoint
)
4646 || (b
->type
== bp_hardware_watchpoint
)
4647 || (b
->type
== bp_read_watchpoint
)
4648 || (b
->type
== bp_access_watchpoint
))
4649 && breakpoint_enabled (b
))
4651 b
->enable_state
= bp_call_disabled
;
4652 check_duplicates (b
);
4658 enable_watchpoints_after_interactive_call_stop (void)
4660 struct breakpoint
*b
;
4664 if (((b
->type
== bp_watchpoint
)
4665 || (b
->type
== bp_hardware_watchpoint
)
4666 || (b
->type
== bp_read_watchpoint
)
4667 || (b
->type
== bp_access_watchpoint
))
4668 && (b
->enable_state
== bp_call_disabled
))
4670 b
->enable_state
= bp_enabled
;
4671 check_duplicates (b
);
4677 /* Set a breakpoint that will evaporate an end of command
4678 at address specified by SAL.
4679 Restrict it to frame FRAME if FRAME is nonzero. */
4682 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_id frame_id
,
4685 struct breakpoint
*b
;
4686 b
= set_raw_breakpoint (sal
, type
);
4687 b
->enable_state
= bp_enabled
;
4688 b
->disposition
= disp_donttouch
;
4689 b
->frame_id
= frame_id
;
4691 /* If we're debugging a multi-threaded program, then we
4692 want momentary breakpoints to be active in only a
4693 single thread of control. */
4694 if (in_thread_list (inferior_ptid
))
4695 b
->thread
= pid_to_thread_id (inferior_ptid
);
4701 /* Tell the user we have just set a breakpoint B. */
4704 mention (struct breakpoint
*b
)
4707 struct cleanup
*old_chain
, *ui_out_chain
;
4708 struct ui_stream
*stb
;
4710 stb
= ui_out_stream_new (uiout
);
4711 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4713 /* FIXME: This is misplaced; mention() is called by things (like
4714 hitting a watchpoint) other than breakpoint creation. It should
4715 be possible to clean this up and at the same time replace the
4716 random calls to breakpoint_changed with this hook, as has already
4717 been done for deprecated_delete_breakpoint_hook and so on. */
4718 if (deprecated_create_breakpoint_hook
)
4719 deprecated_create_breakpoint_hook (b
);
4720 breakpoint_create_event (b
->number
);
4722 if (b
->ops
!= NULL
&& b
->ops
->print_mention
!= NULL
)
4723 b
->ops
->print_mention (b
);
4728 printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b
->number
);
4731 ui_out_text (uiout
, "Watchpoint ");
4732 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4733 ui_out_field_int (uiout
, "number", b
->number
);
4734 ui_out_text (uiout
, ": ");
4735 print_expression (b
->exp
, stb
->stream
);
4736 ui_out_field_stream (uiout
, "exp", stb
);
4737 do_cleanups (ui_out_chain
);
4739 case bp_hardware_watchpoint
:
4740 ui_out_text (uiout
, "Hardware watchpoint ");
4741 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4742 ui_out_field_int (uiout
, "number", b
->number
);
4743 ui_out_text (uiout
, ": ");
4744 print_expression (b
->exp
, stb
->stream
);
4745 ui_out_field_stream (uiout
, "exp", stb
);
4746 do_cleanups (ui_out_chain
);
4748 case bp_read_watchpoint
:
4749 ui_out_text (uiout
, "Hardware read watchpoint ");
4750 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-rwpt");
4751 ui_out_field_int (uiout
, "number", b
->number
);
4752 ui_out_text (uiout
, ": ");
4753 print_expression (b
->exp
, stb
->stream
);
4754 ui_out_field_stream (uiout
, "exp", stb
);
4755 do_cleanups (ui_out_chain
);
4757 case bp_access_watchpoint
:
4758 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4759 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-awpt");
4760 ui_out_field_int (uiout
, "number", b
->number
);
4761 ui_out_text (uiout
, ": ");
4762 print_expression (b
->exp
, stb
->stream
);
4763 ui_out_field_stream (uiout
, "exp", stb
);
4764 do_cleanups (ui_out_chain
);
4767 if (ui_out_is_mi_like_p (uiout
))
4772 printf_filtered (_("Breakpoint %d"), b
->number
);
4775 case bp_hardware_breakpoint
:
4776 if (ui_out_is_mi_like_p (uiout
))
4781 printf_filtered (_("Hardware assisted breakpoint %d"), b
->number
);
4785 case bp_catch_unload
:
4786 printf_filtered (_("Catchpoint %d (%s %s)"),
4788 (b
->type
== bp_catch_load
) ? "load" : "unload",
4789 (b
->dll_pathname
!= NULL
) ?
4790 b
->dll_pathname
: "<any library>");
4793 case bp_catch_vfork
:
4794 printf_filtered (_("Catchpoint %d (%s)"),
4796 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4799 printf_filtered (_("Catchpoint %d (exec)"),
4806 case bp_longjmp_resume
:
4807 case bp_step_resume
:
4809 case bp_watchpoint_scope
:
4810 case bp_shlib_event
:
4811 case bp_thread_event
:
4812 case bp_overlay_event
:
4818 /* i18n: cagney/2005-02-11: Below needs to be merged into a
4822 printf_filtered (_(" (%s) pending."), b
->addr_string
);
4826 if (addressprint
|| b
->source_file
== NULL
)
4828 printf_filtered (" at ");
4829 deprecated_print_address_numeric (b
->loc
->address
, 1, gdb_stdout
);
4832 printf_filtered (": file %s, line %d.",
4833 b
->source_file
, b
->line_number
);
4837 struct bp_location
*loc
= b
->loc
;
4839 for (; loc
; loc
= loc
->next
)
4841 printf_filtered (" (%d locations)", n
);
4846 do_cleanups (old_chain
);
4847 if (ui_out_is_mi_like_p (uiout
))
4849 printf_filtered ("\n");
4853 static struct bp_location
*
4854 add_location_to_breakpoint (struct breakpoint
*b
, enum bptype bptype
,
4855 const struct symtab_and_line
*sal
)
4857 struct bp_location
*loc
, **tmp
;
4859 loc
= allocate_bp_location (b
, bptype
);
4860 for (tmp
= &(b
->loc
); *tmp
!= NULL
; tmp
= &((*tmp
)->next
))
4863 loc
->requested_address
= sal
->pc
;
4864 loc
->address
= adjust_breakpoint_address (loc
->requested_address
,
4866 loc
->section
= sal
->section
;
4868 set_breakpoint_location_function (loc
);
4872 /* Create a breakpoint with SAL as location. Use ADDR_STRING
4873 as textual description of the location, and COND_STRING
4874 as condition expression. */
4877 create_breakpoint (struct symtabs_and_lines sals
, char *addr_string
,
4879 enum bptype type
, enum bpdisp disposition
,
4880 int thread
, int ignore_count
, int from_tty
)
4882 struct breakpoint
*b
= NULL
;
4885 if (type
== bp_hardware_breakpoint
)
4887 int i
= hw_breakpoint_used_count ();
4888 int target_resources_ok
=
4889 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4891 if (target_resources_ok
== 0)
4892 error (_("No hardware breakpoint support in the target."));
4893 else if (target_resources_ok
< 0)
4894 error (_("Hardware breakpoints used exceeds limit."));
4897 for (i
= 0; i
< sals
.nelts
; ++i
)
4899 struct symtab_and_line sal
= sals
.sals
[i
];
4900 struct bp_location
*loc
;
4903 describe_other_breakpoints (sal
.pc
, sal
.section
, thread
);
4907 b
= set_raw_breakpoint (sal
, type
);
4908 set_breakpoint_count (breakpoint_count
+ 1);
4909 b
->number
= breakpoint_count
;
4912 b
->cond_string
= cond_string
;
4913 b
->ignore_count
= ignore_count
;
4914 b
->enable_state
= bp_enabled
;
4915 b
->disposition
= disposition
;
4921 loc
= add_location_to_breakpoint (b
, type
, &sal
);
4926 char *arg
= b
->cond_string
;
4927 loc
->cond
= parse_exp_1 (&arg
, block_for_pc (loc
->address
), 0);
4929 error (_("Garbage %s follows condition"), arg
);
4934 b
->addr_string
= addr_string
;
4936 /* addr_string has to be used or breakpoint_re_set will delete
4938 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4943 /* Remove element at INDEX_TO_REMOVE from SAL, shifting other
4944 elements to fill the void space. */
4945 static void remove_sal (struct symtabs_and_lines
*sal
, int index_to_remove
)
4947 int i
= index_to_remove
+1;
4948 int last_index
= sal
->nelts
-1;
4950 for (;i
<= last_index
; ++i
)
4951 sal
->sals
[i
-1] = sal
->sals
[i
];
4956 /* If appropriate, obtains all sals that correspond
4957 to the same file and line as SAL. This is done
4958 only if SAL does not have explicit PC and has
4959 line and file information. If we got just a single
4960 expanded sal, return the original.
4962 Otherwise, if SAL.explicit_line is not set, filter out
4963 all sals for which the name of enclosing function
4964 is different from SAL. This makes sure that if we have
4965 breakpoint originally set in template instantiation, say
4966 foo<int>(), we won't expand SAL to locations at the same
4967 line in all existing instantiations of 'foo'.
4970 struct symtabs_and_lines
4971 expand_line_sal_maybe (struct symtab_and_line sal
)
4973 struct symtabs_and_lines expanded
;
4974 CORE_ADDR original_pc
= sal
.pc
;
4975 char *original_function
= NULL
;
4979 /* If we have explicit pc, don't expand.
4980 If we have no line number, we can't expand. */
4981 if (sal
.explicit_pc
|| sal
.line
== 0 || sal
.symtab
== NULL
)
4984 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4985 expanded
.sals
[0] = sal
;
4990 find_pc_partial_function (original_pc
, &original_function
, NULL
, NULL
);
4992 expanded
= expand_line_sal (sal
);
4993 if (expanded
.nelts
== 1)
4995 /* We had one sal, we got one sal. Without futher
4996 processing, just return the original sal. */
4997 xfree (expanded
.sals
);
4999 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
5000 sal
.pc
= original_pc
;
5001 expanded
.sals
[0] = sal
;
5005 if (!sal
.explicit_line
)
5007 CORE_ADDR func_addr
, func_end
;
5008 for (i
= 0; i
< expanded
.nelts
; ++i
)
5010 CORE_ADDR pc
= expanded
.sals
[i
].pc
;
5011 char *this_function
;
5012 if (find_pc_partial_function (pc
, &this_function
,
5013 &func_addr
, &func_end
))
5015 if (this_function
&&
5016 strcmp (this_function
, original_function
) != 0)
5018 remove_sal (&expanded
, i
);
5021 else if (func_addr
== pc
)
5023 /* We're at beginning of a function, and should
5025 struct symbol
*sym
= find_pc_function (pc
);
5027 expanded
.sals
[i
] = find_function_start_sal (sym
, 1);
5030 = gdbarch_skip_prologue (current_gdbarch
, pc
);
5037 if (expanded
.nelts
<= 1)
5039 /* This is un ugly workaround. If we get zero
5040 expanded sals then something is really wrong.
5041 Fix that by returnign the original sal. */
5042 xfree (expanded
.sals
);
5044 expanded
.sals
= xmalloc (sizeof (struct symtab_and_line
));
5045 sal
.pc
= original_pc
;
5046 expanded
.sals
[0] = sal
;
5053 for (i
= 0; i
< expanded
.nelts
; ++i
)
5054 if (expanded
.sals
[i
].pc
== original_pc
)
5065 /* Add SALS.nelts breakpoints to the breakpoint table. For each
5066 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i]
5067 value. COND_STRING, if not NULL, specified the condition to be
5068 used for all breakpoints. Essentially the only case where
5069 SALS.nelts is not 1 is when we set a breakpoint on an overloaded
5070 function. In that case, it's still not possible to specify
5071 separate conditions for different overloaded functions, so
5072 we take just a single condition string.
5074 NOTE: If the function succeeds, the caller is expected to cleanup
5075 the arrays ADDR_STRING, COND_STRING, and SALS (but not the
5076 array contents). If the function fails (error() is called), the
5077 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
5078 COND and SALS arrays and each of those arrays contents. */
5081 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
5083 enum bptype type
, enum bpdisp disposition
,
5084 int thread
, int ignore_count
, int from_tty
)
5087 for (i
= 0; i
< sals
.nelts
; ++i
)
5089 struct symtabs_and_lines expanded
=
5090 expand_line_sal_maybe (sals
.sals
[i
]);
5092 create_breakpoint (expanded
, addr_string
[i
],
5093 cond_string
, type
, disposition
,
5094 thread
, ignore_count
, from_tty
);
5098 /* Parse ARG which is assumed to be a SAL specification possibly
5099 followed by conditionals. On return, SALS contains an array of SAL
5100 addresses found. ADDR_STRING contains a vector of (canonical)
5101 address strings. ARG points to the end of the SAL. */
5104 parse_breakpoint_sals (char **address
,
5105 struct symtabs_and_lines
*sals
,
5106 char ***addr_string
,
5109 char *addr_start
= *address
;
5110 *addr_string
= NULL
;
5111 /* If no arg given, or if first arg is 'if ', use the default
5113 if ((*address
) == NULL
5114 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
5116 if (default_breakpoint_valid
)
5118 struct symtab_and_line sal
;
5119 init_sal (&sal
); /* initialize to zeroes */
5120 sals
->sals
= (struct symtab_and_line
*)
5121 xmalloc (sizeof (struct symtab_and_line
));
5122 sal
.pc
= default_breakpoint_address
;
5123 sal
.line
= default_breakpoint_line
;
5124 sal
.symtab
= default_breakpoint_symtab
;
5125 sal
.section
= find_pc_overlay (sal
.pc
);
5126 sals
->sals
[0] = sal
;
5130 error (_("No default breakpoint address now."));
5134 /* Force almost all breakpoints to be in terms of the
5135 current_source_symtab (which is decode_line_1's default). This
5136 should produce the results we want almost all of the time while
5137 leaving default_breakpoint_* alone.
5138 ObjC: However, don't match an Objective-C method name which
5139 may have a '+' or '-' succeeded by a '[' */
5141 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
5143 if (default_breakpoint_valid
5145 || ((strchr ("+-", (*address
)[0]) != NULL
)
5146 && ((*address
)[1] != '['))))
5147 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
5148 default_breakpoint_line
, addr_string
,
5151 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0,
5152 addr_string
, not_found_ptr
);
5154 /* For any SAL that didn't have a canonical string, fill one in. */
5155 if (sals
->nelts
> 0 && *addr_string
== NULL
)
5156 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
5157 if (addr_start
!= (*address
))
5160 for (i
= 0; i
< sals
->nelts
; i
++)
5162 /* Add the string if not present. */
5163 if ((*addr_string
)[i
] == NULL
)
5164 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
5170 /* Convert each SAL into a real PC. Verify that the PC can be
5171 inserted as a breakpoint. If it can't throw an error. */
5174 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
5178 for (i
= 0; i
< sals
->nelts
; i
++)
5179 resolve_sal_pc (&sals
->sals
[i
]);
5183 do_captured_parse_breakpoint (struct ui_out
*ui
, void *data
)
5185 struct captured_parse_breakpoint_args
*args
= data
;
5187 parse_breakpoint_sals (args
->arg_p
, args
->sals_p
, args
->addr_string_p
,
5188 args
->not_found_ptr
);
5191 /* Given TOK, a string specification of condition and thread, as
5192 accepted by the 'break' command, extract the condition
5193 string and thread number and set *COND_STRING and *THREAD.
5194 PC identifies the context at which the condition should be parsed.
5195 If no condition is found, *COND_STRING is set to NULL.
5196 If no thread is found, *THREAD is set to -1. */
5198 find_condition_and_thread (char *tok
, CORE_ADDR pc
,
5199 char **cond_string
, int *thread
)
5201 *cond_string
= NULL
;
5207 char *cond_start
= NULL
;
5208 char *cond_end
= NULL
;
5209 while (*tok
== ' ' || *tok
== '\t')
5214 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5217 toklen
= end_tok
- tok
;
5219 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5221 tok
= cond_start
= end_tok
+ 1;
5222 parse_exp_1 (&tok
, block_for_pc (pc
), 0);
5224 *cond_string
= savestring (cond_start
,
5225 cond_end
- cond_start
);
5227 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
5233 *thread
= strtol (tok
, &tok
, 0);
5235 error (_("Junk after thread keyword."));
5236 if (!valid_thread_id (*thread
))
5237 error (_("Unknown thread %d."), *thread
);
5240 error (_("Junk at end of arguments."));
5244 /* Set a breakpoint according to ARG (function, linenum or *address)
5245 flag: first bit : 0 non-temporary, 1 temporary.
5246 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
5249 break_command_1 (char *arg
, int flag
, int from_tty
)
5251 struct gdb_exception e
;
5252 int tempflag
, hardwareflag
;
5253 struct symtabs_and_lines sals
;
5254 struct symtab_and_line pending_sal
;
5255 char *cond_string
= NULL
;
5258 char *addr_start
= arg
;
5260 struct cleanup
*old_chain
;
5261 struct cleanup
*breakpoint_chain
= NULL
;
5262 struct captured_parse_breakpoint_args parse_args
;
5266 int ignore_count
= 0;
5269 hardwareflag
= flag
& BP_HARDWAREFLAG
;
5270 tempflag
= flag
& BP_TEMPFLAG
;
5276 parse_args
.arg_p
= &arg
;
5277 parse_args
.sals_p
= &sals
;
5278 parse_args
.addr_string_p
= &addr_string
;
5279 parse_args
.not_found_ptr
= ¬_found
;
5281 e
= catch_exception (uiout
, do_captured_parse_breakpoint
,
5282 &parse_args
, RETURN_MASK_ALL
);
5284 /* If caller is interested in rc value from parse, set value. */
5288 exception_print (gdb_stderr
, e
);
5293 case NOT_FOUND_ERROR
:
5295 exception_print (gdb_stderr
, e
);
5297 /* If pending breakpoint support is turned off, throw
5300 if (pending_break_support
== AUTO_BOOLEAN_FALSE
)
5301 deprecated_throw_reason (RETURN_ERROR
);
5303 /* If pending breakpoint support is auto query and the user
5304 selects no, then simply return the error code. */
5305 if (pending_break_support
== AUTO_BOOLEAN_AUTO
&&
5306 !nquery ("Make breakpoint pending on future shared library load? "))
5309 /* At this point, either the user was queried about setting
5310 a pending breakpoint and selected yes, or pending
5311 breakpoint behavior is on and thus a pending breakpoint
5312 is defaulted on behalf of the user. */
5313 copy_arg
= xstrdup (addr_start
);
5314 addr_string
= ©_arg
;
5316 sals
.sals
= &pending_sal
;
5321 exception_print (gdb_stderr
, e
);
5329 /* Create a chain of things that always need to be cleaned up. */
5330 old_chain
= make_cleanup (null_cleanup
, 0);
5334 /* Make sure that all storage allocated to SALS gets freed. */
5335 make_cleanup (xfree
, sals
.sals
);
5337 /* Cleanup the addr_string array but not its contents. */
5338 make_cleanup (xfree
, addr_string
);
5341 /* ----------------------------- SNIP -----------------------------
5342 Anything added to the cleanup chain beyond this point is assumed
5343 to be part of a breakpoint. If the breakpoint create succeeds
5344 then the memory is not reclaimed. */
5345 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5347 /* Mark the contents of the addr_string for cleanup. These go on
5348 the breakpoint_chain and only occure if the breakpoint create
5350 for (i
= 0; i
< sals
.nelts
; i
++)
5352 if (addr_string
[i
] != NULL
)
5353 make_cleanup (xfree
, addr_string
[i
]);
5356 /* Resolve all line numbers to PC's and verify that the addresses
5357 are ok for the target. */
5359 breakpoint_sals_to_pc (&sals
, addr_start
);
5361 /* Verify that condition can be parsed, before setting any
5362 breakpoints. Allocate a separate condition expression for each
5366 /* Here we only parse 'arg' to separate condition
5367 from thread number, so parsing in context of first
5368 sal is OK. When setting the breakpoint we'll
5369 re-parse it in context of each sal. */
5370 find_condition_and_thread (arg
, sals
.sals
[0].pc
, &cond_string
, &thread
);
5372 make_cleanup (xfree
, cond_string
);
5373 create_breakpoints (sals
, addr_string
, cond_string
,
5374 hardwareflag
? bp_hardware_breakpoint
5376 tempflag
? disp_del
: disp_donttouch
,
5377 thread
, ignore_count
, from_tty
);
5381 struct symtab_and_line sal
= {0};
5382 struct breakpoint
*b
;
5384 make_cleanup (xfree
, copy_arg
);
5386 b
= set_raw_breakpoint_without_location (hardwareflag
5387 ? bp_hardware_breakpoint
5389 set_breakpoint_count (breakpoint_count
+ 1);
5390 b
->number
= breakpoint_count
;
5392 b
->addr_string
= addr_string
[0];
5393 b
->cond_string
= cond_string
;
5394 b
->ignore_count
= ignore_count
;
5395 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
5396 b
->condition_not_parsed
= 1;
5401 warning (_("Multiple breakpoints were set.\n"
5402 "Use the \"delete\" command to delete unwanted breakpoints."));
5403 /* That's it. Discard the cleanups for data inserted into the
5405 discard_cleanups (breakpoint_chain
);
5406 /* But cleanup everything else. */
5407 do_cleanups (old_chain
);
5412 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
5413 linenum or *address) with COND and IGNORE_COUNT. */
5415 struct captured_breakpoint_args
5426 do_captured_breakpoint (struct ui_out
*uiout
, void *data
)
5428 struct captured_breakpoint_args
*args
= data
;
5429 struct symtabs_and_lines sals
;
5430 struct expression
**cond
;
5431 struct cleanup
*old_chain
;
5432 struct cleanup
*breakpoint_chain
= NULL
;
5435 char *cond_string
= 0;
5439 /* Parse the source and lines spec. Delay check that the expression
5440 didn't contain trailing garbage until after cleanups are in
5444 address_end
= args
->address
;
5446 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
, 0);
5451 /* Create a chain of things at always need to be cleaned up. */
5452 old_chain
= make_cleanup (null_cleanup
, 0);
5454 /* Always have a addr_string array, even if it is empty. */
5455 make_cleanup (xfree
, addr_string
);
5457 /* Make sure that all storage allocated to SALS gets freed. */
5458 make_cleanup (xfree
, sals
.sals
);
5460 /* Allocate space for all the cond expressions. */
5461 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
5462 make_cleanup (xfree
, cond
);
5464 /* ----------------------------- SNIP -----------------------------
5465 Anything added to the cleanup chain beyond this point is assumed
5466 to be part of a breakpoint. If the breakpoint create goes
5467 through then that memory is not cleaned up. */
5468 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5470 /* Mark the contents of the addr_string for cleanup. These go on
5471 the breakpoint_chain and only occure if the breakpoint create
5473 for (i
= 0; i
< sals
.nelts
; i
++)
5475 if (addr_string
[i
] != NULL
)
5476 make_cleanup (xfree
, addr_string
[i
]);
5479 /* Wait until now before checking for garbage at the end of the
5480 address. That way cleanups can take care of freeing any
5482 if (*address_end
!= '\0')
5483 error (_("Garbage %s following breakpoint address"), address_end
);
5485 /* Resolve all line numbers to PC's. */
5486 breakpoint_sals_to_pc (&sals
, args
->address
);
5488 if (args
->condition
!= NULL
)
5490 cond_string
= xstrdup (args
->condition
);
5491 make_cleanup (xfree
, cond_string
);
5494 create_breakpoints (sals
, addr_string
, args
->condition
,
5495 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
5496 args
->tempflag
? disp_del
: disp_donttouch
,
5497 args
->thread
, args
->ignore_count
, 0/*from-tty*/);
5499 /* That's it. Discard the cleanups for data inserted into the
5501 discard_cleanups (breakpoint_chain
);
5502 /* But cleanup everything else. */
5503 do_cleanups (old_chain
);
5508 gdb_breakpoint (char *address
, char *condition
,
5509 int hardwareflag
, int tempflag
,
5510 int thread
, int ignore_count
,
5511 char **error_message
)
5513 struct captured_breakpoint_args args
;
5514 args
.address
= address
;
5515 args
.condition
= condition
;
5516 args
.hardwareflag
= hardwareflag
;
5517 args
.tempflag
= tempflag
;
5518 args
.thread
= thread
;
5519 args
.ignore_count
= ignore_count
;
5520 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint
, &args
,
5521 error_message
, RETURN_MASK_ALL
) < 0)
5528 /* Helper function for break_command_1 and disassemble_command. */
5531 resolve_sal_pc (struct symtab_and_line
*sal
)
5535 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5537 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5538 error (_("No line %d in file \"%s\"."),
5539 sal
->line
, sal
->symtab
->filename
);
5543 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5545 struct blockvector
*bv
;
5549 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &b
, sal
->symtab
);
5552 sym
= block_function (b
);
5555 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5556 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5560 /* It really is worthwhile to have the section, so we'll just
5561 have to look harder. This case can be executed if we have
5562 line numbers but no functions (as can happen in assembly
5565 struct minimal_symbol
*msym
;
5567 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5569 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5576 break_command (char *arg
, int from_tty
)
5578 break_command_1 (arg
, 0, from_tty
);
5582 tbreak_command (char *arg
, int from_tty
)
5584 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5588 hbreak_command (char *arg
, int from_tty
)
5590 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5594 thbreak_command (char *arg
, int from_tty
)
5596 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5600 stop_command (char *arg
, int from_tty
)
5602 printf_filtered (_("Specify the type of breakpoint to set.\n\
5603 Usage: stop in <function | address>\n\
5604 stop at <line>\n"));
5608 stopin_command (char *arg
, int from_tty
)
5612 if (arg
== (char *) NULL
)
5614 else if (*arg
!= '*')
5619 /* look for a ':'. If this is a line number specification, then
5620 say it is bad, otherwise, it should be an address or
5621 function/method name */
5622 while (*argptr
&& !hasColon
)
5624 hasColon
= (*argptr
== ':');
5629 badInput
= (*argptr
!= ':'); /* Not a class::method */
5631 badInput
= isdigit (*arg
); /* a simple line number */
5635 printf_filtered (_("Usage: stop in <function | address>\n"));
5637 break_command_1 (arg
, 0, from_tty
);
5641 stopat_command (char *arg
, int from_tty
)
5645 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5652 /* look for a ':'. If there is a '::' then get out, otherwise
5653 it is probably a line number. */
5654 while (*argptr
&& !hasColon
)
5656 hasColon
= (*argptr
== ':');
5661 badInput
= (*argptr
== ':'); /* we have class::method */
5663 badInput
= !isdigit (*arg
); /* not a line number */
5667 printf_filtered (_("Usage: stop at <line>\n"));
5669 break_command_1 (arg
, 0, from_tty
);
5672 /* accessflag: hw_write: watch write,
5673 hw_read: watch read,
5674 hw_access: watch access (read or write) */
5676 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5678 struct breakpoint
*b
, *scope_breakpoint
= NULL
;
5679 struct symtab_and_line sal
;
5680 struct expression
*exp
;
5681 struct block
*exp_valid_block
;
5682 struct value
*val
, *mark
;
5683 struct frame_info
*frame
;
5684 struct frame_info
*prev_frame
= NULL
;
5685 char *exp_start
= NULL
;
5686 char *exp_end
= NULL
;
5687 char *tok
, *end_tok
;
5689 char *cond_start
= NULL
;
5690 char *cond_end
= NULL
;
5691 struct expression
*cond
= NULL
;
5692 int i
, other_type_used
, target_resources_ok
= 0;
5693 enum bptype bp_type
;
5696 init_sal (&sal
); /* initialize to zeroes */
5698 /* Parse arguments. */
5699 innermost_block
= NULL
;
5701 exp
= parse_exp_1 (&arg
, 0, 0);
5703 exp_valid_block
= innermost_block
;
5704 mark
= value_mark ();
5705 val
= evaluate_expression (exp
);
5706 release_value (val
);
5707 if (value_lazy (val
))
5708 value_fetch_lazy (val
);
5711 while (*tok
== ' ' || *tok
== '\t')
5715 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5718 toklen
= end_tok
- tok
;
5719 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5721 tok
= cond_start
= end_tok
+ 1;
5722 cond
= parse_exp_1 (&tok
, 0, 0);
5726 error (_("Junk at end of command."));
5728 if (accessflag
== hw_read
)
5729 bp_type
= bp_read_watchpoint
;
5730 else if (accessflag
== hw_access
)
5731 bp_type
= bp_access_watchpoint
;
5733 bp_type
= bp_hardware_watchpoint
;
5735 mem_cnt
= can_use_hardware_watchpoint (val
);
5736 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5737 error (_("Expression cannot be implemented with read/access watchpoint."));
5740 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5741 target_resources_ok
=
5742 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5744 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5745 error (_("Target does not support this type of hardware watchpoint."));
5747 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5748 error (_("Target can only support one kind of HW watchpoint at a time."));
5751 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5752 watchpoint could not be set. */
5753 if (!mem_cnt
|| target_resources_ok
<= 0)
5754 bp_type
= bp_watchpoint
;
5756 frame
= block_innermost_frame (exp_valid_block
);
5758 prev_frame
= get_prev_frame (frame
);
5762 /* If the expression is "local", then set up a "watchpoint scope"
5763 breakpoint at the point where we've left the scope of the watchpoint
5764 expression. Create the scope breakpoint before the watchpoint, so
5765 that we will encounter it first in bpstat_stop_status. */
5766 if (innermost_block
&& prev_frame
)
5768 scope_breakpoint
= create_internal_breakpoint (get_frame_pc (prev_frame
),
5769 bp_watchpoint_scope
);
5771 scope_breakpoint
->enable_state
= bp_enabled
;
5773 /* Automatically delete the breakpoint when it hits. */
5774 scope_breakpoint
->disposition
= disp_del
;
5776 /* Only break in the proper frame (help with recursion). */
5777 scope_breakpoint
->frame_id
= get_frame_id (prev_frame
);
5779 /* Set the address at which we will stop. */
5780 scope_breakpoint
->loc
->requested_address
5781 = get_frame_pc (prev_frame
);
5782 scope_breakpoint
->loc
->address
5783 = adjust_breakpoint_address (scope_breakpoint
->loc
->requested_address
,
5784 scope_breakpoint
->type
);
5787 /* Now set up the breakpoint. */
5788 b
= set_raw_breakpoint (sal
, bp_type
);
5789 set_breakpoint_count (breakpoint_count
+ 1);
5790 b
->number
= breakpoint_count
;
5791 b
->disposition
= disp_donttouch
;
5793 b
->exp_valid_block
= exp_valid_block
;
5794 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5796 b
->loc
->cond
= cond
;
5798 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5803 b
->watchpoint_frame
= get_frame_id (frame
);
5805 b
->watchpoint_frame
= null_frame_id
;
5807 if (scope_breakpoint
!= NULL
)
5809 /* The scope breakpoint is related to the watchpoint. We will
5810 need to act on them together. */
5811 b
->related_breakpoint
= scope_breakpoint
;
5812 scope_breakpoint
->related_breakpoint
= b
;
5815 value_free_to_mark (mark
);
5819 /* Return count of locations need to be watched and can be handled
5820 in hardware. If the watchpoint can not be handled
5821 in hardware return zero. */
5824 can_use_hardware_watchpoint (struct value
*v
)
5826 int found_memory_cnt
= 0;
5827 struct value
*head
= v
;
5829 /* Did the user specifically forbid us to use hardware watchpoints? */
5830 if (!can_use_hw_watchpoints
)
5833 /* Make sure that the value of the expression depends only upon
5834 memory contents, and values computed from them within GDB. If we
5835 find any register references or function calls, we can't use a
5836 hardware watchpoint.
5838 The idea here is that evaluating an expression generates a series
5839 of values, one holding the value of every subexpression. (The
5840 expression a*b+c has five subexpressions: a, b, a*b, c, and
5841 a*b+c.) GDB's values hold almost enough information to establish
5842 the criteria given above --- they identify memory lvalues,
5843 register lvalues, computed values, etcetera. So we can evaluate
5844 the expression, and then scan the chain of values that leaves
5845 behind to decide whether we can detect any possible change to the
5846 expression's final value using only hardware watchpoints.
5848 However, I don't think that the values returned by inferior
5849 function calls are special in any way. So this function may not
5850 notice that an expression involving an inferior function call
5851 can't be watched with hardware watchpoints. FIXME. */
5852 for (; v
; v
= value_next (v
))
5854 if (VALUE_LVAL (v
) == lval_memory
)
5857 /* A lazy memory lvalue is one that GDB never needed to fetch;
5858 we either just used its address (e.g., `a' in `a.b') or
5859 we never needed it at all (e.g., `a' in `a,b'). */
5863 /* Ahh, memory we actually used! Check if we can cover
5864 it with hardware watchpoints. */
5865 struct type
*vtype
= check_typedef (value_type (v
));
5867 /* We only watch structs and arrays if user asked for it
5868 explicitly, never if they just happen to appear in a
5869 middle of some value chain. */
5871 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5872 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5874 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
5875 int len
= TYPE_LENGTH (value_type (v
));
5877 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5884 else if (VALUE_LVAL (v
) != not_lval
5885 && deprecated_value_modifiable (v
) == 0)
5886 return 0; /* ??? What does this represent? */
5887 else if (VALUE_LVAL (v
) == lval_register
)
5888 return 0; /* cannot watch a register with a HW watchpoint */
5891 /* The expression itself looks suitable for using a hardware
5892 watchpoint, but give the target machine a chance to reject it. */
5893 return found_memory_cnt
;
5897 watch_command_wrapper (char *arg
, int from_tty
)
5899 watch_command (arg
, from_tty
);
5903 watch_command (char *arg
, int from_tty
)
5905 watch_command_1 (arg
, hw_write
, from_tty
);
5909 rwatch_command_wrapper (char *arg
, int from_tty
)
5911 rwatch_command (arg
, from_tty
);
5915 rwatch_command (char *arg
, int from_tty
)
5917 watch_command_1 (arg
, hw_read
, from_tty
);
5921 awatch_command_wrapper (char *arg
, int from_tty
)
5923 awatch_command (arg
, from_tty
);
5927 awatch_command (char *arg
, int from_tty
)
5929 watch_command_1 (arg
, hw_access
, from_tty
);
5933 /* Helper routines for the until_command routine in infcmd.c. Here
5934 because it uses the mechanisms of breakpoints. */
5936 /* This function is called by fetch_inferior_event via the
5937 cmd_continuation pointer, to complete the until command. It takes
5938 care of cleaning up the temporary breakpoints set up by the until
5941 until_break_command_continuation (struct continuation_arg
*arg
)
5943 struct cleanup
*cleanups
;
5945 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5946 do_exec_cleanups (cleanups
);
5950 until_break_command (char *arg
, int from_tty
, int anywhere
)
5952 struct symtabs_and_lines sals
;
5953 struct symtab_and_line sal
;
5954 struct frame_info
*frame
= get_selected_frame (NULL
);
5955 struct frame_info
*prev_frame
= get_prev_frame (frame
);
5956 struct breakpoint
*breakpoint
;
5957 struct cleanup
*old_chain
;
5958 struct continuation_arg
*arg1
;
5961 clear_proceed_status ();
5963 /* Set a breakpoint where the user wants it and at return from
5966 if (default_breakpoint_valid
)
5967 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5968 default_breakpoint_line
, (char ***) NULL
, NULL
);
5970 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5971 0, (char ***) NULL
, NULL
);
5973 if (sals
.nelts
!= 1)
5974 error (_("Couldn't get information on specified line."));
5977 xfree (sals
.sals
); /* malloc'd, so freed */
5980 error (_("Junk at end of arguments."));
5982 resolve_sal_pc (&sal
);
5985 /* If the user told us to continue until a specified location,
5986 we don't specify a frame at which we need to stop. */
5987 breakpoint
= set_momentary_breakpoint (sal
, null_frame_id
, bp_until
);
5989 /* Otherwise, specify the current frame, because we want to stop only
5990 at the very same frame. */
5991 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
),
5994 if (!target_can_async_p ())
5995 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5997 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5999 /* If we are running asynchronously, and the target supports async
6000 execution, we are not waiting for the target to stop, in the call
6001 tp proceed, below. This means that we cannot delete the
6002 brekpoints until the target has actually stopped. The only place
6003 where we get a chance to do that is in fetch_inferior_event, so
6004 we must set things up for that. */
6006 if (target_can_async_p ())
6008 /* In this case the arg for the continuation is just the point
6009 in the exec_cleanups chain from where to start doing
6010 cleanups, because all the continuation does is the cleanups in
6011 the exec_cleanup_chain. */
6013 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
6015 arg1
->data
.pointer
= old_chain
;
6017 add_continuation (until_break_command_continuation
, arg1
);
6020 /* Keep within the current frame, or in frames called by the current
6024 sal
= find_pc_line (get_frame_pc (prev_frame
), 0);
6025 sal
.pc
= get_frame_pc (prev_frame
);
6026 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (prev_frame
),
6028 if (!target_can_async_p ())
6029 make_cleanup_delete_breakpoint (breakpoint
);
6031 make_exec_cleanup_delete_breakpoint (breakpoint
);
6034 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
6035 /* Do the cleanups now, anly if we are not running asynchronously,
6036 of if we are, but the target is still synchronous. */
6037 if (!target_can_async_p ())
6038 do_cleanups (old_chain
);
6042 ep_skip_leading_whitespace (char **s
)
6044 if ((s
== NULL
) || (*s
== NULL
))
6046 while (isspace (**s
))
6050 /* This function examines a string, and attempts to find a token
6051 that might be an event name in the leading characters. If a
6052 possible match is found, a pointer to the last character of
6053 the token is returned. Else, NULL is returned. */
6056 ep_find_event_name_end (char *arg
)
6059 char *event_name_end
= NULL
;
6061 /* If we could depend upon the presense of strrpbrk, we'd use that... */
6065 /* We break out of the loop when we find a token delimiter.
6066 Basically, we're looking for alphanumerics and underscores;
6067 anything else delimites the token. */
6070 if (!isalnum (*s
) && (*s
!= '_'))
6076 return event_name_end
;
6080 /* This function attempts to parse an optional "if <cond>" clause
6081 from the arg string. If one is not found, it returns NULL.
6083 Else, it returns a pointer to the condition string. (It does not
6084 attempt to evaluate the string against a particular block.) And,
6085 it updates arg to point to the first character following the parsed
6086 if clause in the arg string. */
6089 ep_parse_optional_if_clause (char **arg
)
6093 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
6096 /* Skip the "if" keyword. */
6099 /* Skip any extra leading whitespace, and record the start of the
6100 condition string. */
6101 ep_skip_leading_whitespace (arg
);
6104 /* Assume that the condition occupies the remainder of the arg string. */
6105 (*arg
) += strlen (cond_string
);
6110 /* This function attempts to parse an optional filename from the arg
6111 string. If one is not found, it returns NULL.
6113 Else, it returns a pointer to the parsed filename. (This function
6114 makes no attempt to verify that a file of that name exists, or is
6115 accessible.) And, it updates arg to point to the first character
6116 following the parsed filename in the arg string.
6118 Note that clients needing to preserve the returned filename for
6119 future access should copy it to their own buffers. */
6121 ep_parse_optional_filename (char **arg
)
6123 static char filename
[1024];
6128 if ((*arg_p
== '\0') || isspace (*arg_p
))
6146 /* Commands to deal with catching events, such as signals, exceptions,
6147 process start/exit, etc. */
6151 catch_fork
, catch_vfork
6156 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6159 char *cond_string
= NULL
;
6161 ep_skip_leading_whitespace (&arg
);
6163 /* The allowed syntax is:
6165 catch [v]fork if <cond>
6167 First, check if there's an if clause. */
6168 cond_string
= ep_parse_optional_if_clause (&arg
);
6170 if ((*arg
!= '\0') && !isspace (*arg
))
6171 error (_("Junk at end of arguments."));
6173 /* If this target supports it, create a fork or vfork catchpoint
6174 and enable reporting of such events. */
6178 create_fork_event_catchpoint (tempflag
, cond_string
);
6181 create_vfork_event_catchpoint (tempflag
, cond_string
);
6184 error (_("unsupported or unknown fork kind; cannot catch it"));
6190 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6192 char *cond_string
= NULL
;
6194 ep_skip_leading_whitespace (&arg
);
6196 /* The allowed syntax is:
6198 catch exec if <cond>
6200 First, check if there's an if clause. */
6201 cond_string
= ep_parse_optional_if_clause (&arg
);
6203 if ((*arg
!= '\0') && !isspace (*arg
))
6204 error (_("Junk at end of arguments."));
6206 /* If this target supports it, create an exec catchpoint
6207 and enable reporting of such events. */
6208 create_exec_event_catchpoint (tempflag
, cond_string
);
6212 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6214 char *dll_pathname
= NULL
;
6215 char *cond_string
= NULL
;
6217 ep_skip_leading_whitespace (&arg
);
6219 /* The allowed syntax is:
6221 catch load if <cond>
6222 catch load <filename>
6223 catch load <filename> if <cond>
6225 The user is not allowed to specify the <filename> after an
6228 We'll ignore the pathological case of a file named "if".
6230 First, check if there's an if clause. If so, then there
6231 cannot be a filename. */
6232 cond_string
= ep_parse_optional_if_clause (&arg
);
6234 /* If there was an if clause, then there cannot be a filename.
6235 Else, there might be a filename and an if clause. */
6236 if (cond_string
== NULL
)
6238 dll_pathname
= ep_parse_optional_filename (&arg
);
6239 ep_skip_leading_whitespace (&arg
);
6240 cond_string
= ep_parse_optional_if_clause (&arg
);
6243 if ((*arg
!= '\0') && !isspace (*arg
))
6244 error (_("Junk at end of arguments."));
6246 /* Create a load breakpoint that only triggers when a load of
6247 the specified dll (or any dll, if no pathname was specified)
6249 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6250 dll_pathname
, cond_string
);
6254 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6256 char *dll_pathname
= NULL
;
6257 char *cond_string
= NULL
;
6259 ep_skip_leading_whitespace (&arg
);
6261 /* The allowed syntax is:
6263 catch unload if <cond>
6264 catch unload <filename>
6265 catch unload <filename> if <cond>
6267 The user is not allowed to specify the <filename> after an
6270 We'll ignore the pathological case of a file named "if".
6272 First, check if there's an if clause. If so, then there
6273 cannot be a filename. */
6274 cond_string
= ep_parse_optional_if_clause (&arg
);
6276 /* If there was an if clause, then there cannot be a filename.
6277 Else, there might be a filename and an if clause. */
6278 if (cond_string
== NULL
)
6280 dll_pathname
= ep_parse_optional_filename (&arg
);
6281 ep_skip_leading_whitespace (&arg
);
6282 cond_string
= ep_parse_optional_if_clause (&arg
);
6285 if ((*arg
!= '\0') && !isspace (*arg
))
6286 error (_("Junk at end of arguments."));
6288 /* Create an unload breakpoint that only triggers when an unload of
6289 the specified dll (or any dll, if no pathname was specified)
6291 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6292 dll_pathname
, cond_string
);
6295 static enum print_stop_action
6296 print_exception_catchpoint (struct breakpoint
*b
)
6298 annotate_catchpoint (b
->number
);
6300 if (strstr (b
->addr_string
, "throw") != NULL
)
6301 printf_filtered (_("\nCatchpoint %d (exception thrown)\n"),
6304 printf_filtered (_("\nCatchpoint %d (exception caught)\n"),
6307 return PRINT_SRC_AND_LOC
;
6311 print_one_exception_catchpoint (struct breakpoint
*b
, CORE_ADDR
*last_addr
)
6316 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
6319 *last_addr
= b
->loc
->address
;
6320 if (strstr (b
->addr_string
, "throw") != NULL
)
6321 ui_out_field_string (uiout
, "what", "exception throw");
6323 ui_out_field_string (uiout
, "what", "exception catch");
6327 print_mention_exception_catchpoint (struct breakpoint
*b
)
6329 if (strstr (b
->addr_string
, "throw") != NULL
)
6330 printf_filtered (_("Catchpoint %d (throw)"), b
->number
);
6332 printf_filtered (_("Catchpoint %d (catch)"), b
->number
);
6335 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops
= {
6336 print_exception_catchpoint
,
6337 print_one_exception_catchpoint
,
6338 print_mention_exception_catchpoint
6342 handle_gnu_v3_exceptions (int tempflag
, char *cond_string
,
6343 enum exception_event_kind ex_event
, int from_tty
)
6345 char *trigger_func_name
, *nameptr
;
6346 struct symtabs_and_lines sals
;
6347 struct breakpoint
*b
;
6349 if (ex_event
== EX_EVENT_CATCH
)
6350 trigger_func_name
= xstrdup ("__cxa_begin_catch");
6352 trigger_func_name
= xstrdup ("__cxa_throw");
6354 nameptr
= trigger_func_name
;
6355 sals
= decode_line_1 (&nameptr
, 1, NULL
, 0, NULL
, NULL
);
6356 if (sals
.nelts
== 0)
6358 xfree (trigger_func_name
);
6362 b
= set_raw_breakpoint (sals
.sals
[0], bp_breakpoint
);
6363 set_breakpoint_count (breakpoint_count
+ 1);
6364 b
->number
= breakpoint_count
;
6365 b
->cond_string
= (cond_string
== NULL
) ?
6366 NULL
: savestring (cond_string
, strlen (cond_string
));
6368 b
->addr_string
= trigger_func_name
;
6369 b
->enable_state
= bp_enabled
;
6370 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6371 b
->ops
= &gnu_v3_exception_catchpoint_ops
;
6378 /* Deal with "catch catch" and "catch throw" commands */
6381 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6382 int tempflag
, int from_tty
)
6384 char *cond_string
= NULL
;
6385 struct symtab_and_line
*sal
= NULL
;
6387 ep_skip_leading_whitespace (&arg
);
6389 cond_string
= ep_parse_optional_if_clause (&arg
);
6391 if ((*arg
!= '\0') && !isspace (*arg
))
6392 error (_("Junk at end of arguments."));
6394 if ((ex_event
!= EX_EVENT_THROW
) &&
6395 (ex_event
!= EX_EVENT_CATCH
))
6396 error (_("Unsupported or unknown exception event; cannot catch it"));
6398 if (handle_gnu_v3_exceptions (tempflag
, cond_string
, ex_event
, from_tty
))
6401 warning (_("Unsupported with this platform/compiler combination."));
6404 /* Create a breakpoint struct for Ada exception catchpoints. */
6407 create_ada_exception_breakpoint (struct symtab_and_line sal
,
6411 struct expression
*cond
,
6412 struct breakpoint_ops
*ops
,
6416 struct breakpoint
*b
;
6420 describe_other_breakpoints (sal
.pc
, sal
.section
, -1);
6421 /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
6422 version for exception catchpoints, because two catchpoints
6423 used for different exception names will use the same address.
6424 In this case, a "breakpoint ... also set at..." warning is
6425 unproductive. Besides. the warning phrasing is also a bit
6426 inapropriate, we should use the word catchpoint, and tell
6427 the user what type of catchpoint it is. The above is good
6428 enough for now, though. */
6431 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6432 set_breakpoint_count (breakpoint_count
+ 1);
6434 b
->enable_state
= bp_enabled
;
6435 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6436 b
->number
= breakpoint_count
;
6437 b
->ignore_count
= 0;
6438 b
->loc
->cond
= cond
;
6439 b
->addr_string
= addr_string
;
6440 b
->language
= language_ada
;
6441 b
->cond_string
= cond_string
;
6442 b
->exp_string
= exp_string
;
6449 /* Implement the "catch exception" command. */
6452 catch_ada_exception_command (char *arg
, int tempflag
, int from_tty
)
6454 struct symtab_and_line sal
;
6456 char *addr_string
= NULL
;
6457 char *exp_string
= NULL
;
6458 char *cond_string
= NULL
;
6459 struct expression
*cond
= NULL
;
6460 struct breakpoint_ops
*ops
= NULL
;
6462 sal
= ada_decode_exception_location (arg
, &addr_string
, &exp_string
,
6463 &cond_string
, &cond
, &ops
);
6464 create_ada_exception_breakpoint (sal
, addr_string
, exp_string
,
6465 cond_string
, cond
, ops
, tempflag
,
6469 /* Implement the "catch assert" command. */
6472 catch_assert_command (char *arg
, int tempflag
, int from_tty
)
6474 struct symtab_and_line sal
;
6475 char *addr_string
= NULL
;
6476 struct breakpoint_ops
*ops
= NULL
;
6478 sal
= ada_decode_assert_location (arg
, &addr_string
, &ops
);
6479 create_ada_exception_breakpoint (sal
, addr_string
, NULL
, NULL
, NULL
, ops
,
6480 tempflag
, from_tty
);
6484 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6487 /* The first argument may be an event name, such as "start" or "load".
6488 If so, then handle it as such. If it doesn't match an event name,
6489 then attempt to interpret it as an exception name. (This latter is
6490 the v4.16-and-earlier GDB meaning of the "catch" command.)
6492 First, try to find the bounds of what might be an event name. */
6493 char *arg1_start
= arg
;
6497 if (arg1_start
== NULL
)
6499 /* Old behaviour was to use pre-v-4.16 syntax */
6500 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6502 /* Now, this is not allowed */
6503 error (_("Catch requires an event name."));
6506 arg1_end
= ep_find_event_name_end (arg1_start
);
6507 if (arg1_end
== NULL
)
6508 error (_("catch requires an event"));
6509 arg1_length
= arg1_end
+ 1 - arg1_start
;
6511 /* Try to match what we found against known event names. */
6512 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6514 error (_("Catch of signal not yet implemented"));
6516 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6518 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6519 tempflag
, from_tty
);
6521 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6523 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6524 tempflag
, from_tty
);
6526 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6528 error (_("Catch of thread_start not yet implemented"));
6530 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6532 error (_("Catch of thread_exit not yet implemented"));
6534 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6536 error (_("Catch of thread_join not yet implemented"));
6538 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6540 error (_("Catch of start not yet implemented"));
6542 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6544 error (_("Catch of exit not yet implemented"));
6546 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6548 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6550 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6552 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6554 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6556 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6558 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6560 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6562 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6564 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6566 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6568 error (_("Catch of stop not yet implemented"));
6570 else if (strncmp (arg1_start
, "exception", arg1_length
) == 0)
6572 catch_ada_exception_command (arg1_end
+ 1, tempflag
, from_tty
);
6575 else if (strncmp (arg1_start
, "assert", arg1_length
) == 0)
6577 catch_assert_command (arg1_end
+ 1, tempflag
, from_tty
);
6580 /* This doesn't appear to be an event name */
6584 /* Pre-v.4.16 behaviour was to treat the argument
6585 as the name of an exception */
6586 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6587 /* Now this is not allowed */
6588 error (_("Unknown event kind specified for catch"));
6594 catch_command (char *arg
, int from_tty
)
6596 catch_command_1 (arg
, 0, from_tty
);
6601 tcatch_command (char *arg
, int from_tty
)
6603 catch_command_1 (arg
, 1, from_tty
);
6606 /* Delete breakpoints by address or line. */
6609 clear_command (char *arg
, int from_tty
)
6611 struct breakpoint
*b
;
6612 VEC(breakpoint_p
) *found
= 0;
6615 struct symtabs_and_lines sals
;
6616 struct symtab_and_line sal
;
6621 sals
= decode_line_spec (arg
, 1);
6626 sals
.sals
= (struct symtab_and_line
*)
6627 xmalloc (sizeof (struct symtab_and_line
));
6628 make_cleanup (xfree
, sals
.sals
);
6629 init_sal (&sal
); /* initialize to zeroes */
6630 sal
.line
= default_breakpoint_line
;
6631 sal
.symtab
= default_breakpoint_symtab
;
6632 sal
.pc
= default_breakpoint_address
;
6633 if (sal
.symtab
== 0)
6634 error (_("No source file specified."));
6642 /* We don't call resolve_sal_pc here. That's not
6643 as bad as it seems, because all existing breakpoints
6644 typically have both file/line and pc set. So, if
6645 clear is given file/line, we can match this to existing
6646 breakpoint without obtaining pc at all.
6648 We only support clearing given the address explicitly
6649 present in breakpoint table. Say, we've set breakpoint
6650 at file:line. There were several PC values for that file:line,
6651 due to optimization, all in one block.
6652 We've picked one PC value. If "clear" is issued with another
6653 PC corresponding to the same file:line, the breakpoint won't
6654 be cleared. We probably can still clear the breakpoint, but
6655 since the other PC value is never presented to user, user
6656 can only find it by guessing, and it does not seem important
6659 /* For each line spec given, delete bps which correspond
6660 to it. Do it in two passes, solely to preserve the current
6661 behavior that from_tty is forced true if we delete more than
6665 for (i
= 0; i
< sals
.nelts
; i
++)
6667 /* If exact pc given, clear bpts at that pc.
6668 If line given (pc == 0), clear all bpts on specified line.
6669 If defaulting, clear all bpts on default line
6672 defaulting sal.pc != 0 tests to do
6677 1 0 <can't happen> */
6681 /* Find all matching breakpoints and add them to
6686 /* Are we going to delete b? */
6687 if (b
->type
!= bp_none
6688 && b
->type
!= bp_watchpoint
6689 && b
->type
!= bp_hardware_watchpoint
6690 && b
->type
!= bp_read_watchpoint
6691 && b
->type
!= bp_access_watchpoint
)
6693 struct bp_location
*loc
= b
->loc
;
6694 for (; loc
; loc
= loc
->next
)
6696 int pc_match
= sal
.pc
6697 && (loc
->address
== sal
.pc
)
6698 && (!section_is_overlay (loc
->section
)
6699 || loc
->section
== sal
.section
);
6700 int line_match
= ((default_match
|| (0 == sal
.pc
))
6701 && b
->source_file
!= NULL
6702 && sal
.symtab
!= NULL
6703 && strcmp (b
->source_file
, sal
.symtab
->filename
) == 0
6704 && b
->line_number
== sal
.line
);
6705 if (pc_match
|| line_match
)
6714 VEC_safe_push(breakpoint_p
, found
, b
);
6717 /* Now go thru the 'found' chain and delete them. */
6718 if (VEC_empty(breakpoint_p
, found
))
6721 error (_("No breakpoint at %s."), arg
);
6723 error (_("No breakpoint at this line."));
6726 if (VEC_length(breakpoint_p
, found
) > 1)
6727 from_tty
= 1; /* Always report if deleted more than one */
6730 if (VEC_length(breakpoint_p
, found
) == 1)
6731 printf_unfiltered (_("Deleted breakpoint "));
6733 printf_unfiltered (_("Deleted breakpoints "));
6735 breakpoints_changed ();
6737 for (ix
= 0; VEC_iterate(breakpoint_p
, found
, ix
, b
); ix
++)
6740 printf_unfiltered ("%d ", b
->number
);
6741 delete_breakpoint (b
);
6744 putchar_unfiltered ('\n');
6747 /* Delete breakpoint in BS if they are `delete' breakpoints and
6748 all breakpoints that are marked for deletion, whether hit or not.
6749 This is called after any breakpoint is hit, or after errors. */
6752 breakpoint_auto_delete (bpstat bs
)
6754 struct breakpoint
*b
, *temp
;
6756 for (; bs
; bs
= bs
->next
)
6757 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
->disposition
== disp_del
6759 delete_breakpoint (bs
->breakpoint_at
->owner
);
6761 ALL_BREAKPOINTS_SAFE (b
, temp
)
6763 if (b
->disposition
== disp_del_at_next_stop
)
6764 delete_breakpoint (b
);
6768 /* Remove locations of breakpoint BPT from
6769 the global list of breakpoint locations. */
6772 unlink_locations_from_global_list (struct breakpoint
*bpt
)
6774 /* This code assumes that the locations
6775 of a breakpoint are found in the global list
6776 in the same order, but not necessary adjacent. */
6777 struct bp_location
**tmp
= &bp_location_chain
;
6778 struct bp_location
*here
= bpt
->loc
;
6783 for (; *tmp
&& here
;)
6787 *tmp
= here
->global_next
;
6792 tmp
= &((*tmp
)->global_next
);
6797 /* Delete a breakpoint and clean up all traces of it in the data
6801 delete_breakpoint (struct breakpoint
*bpt
)
6803 struct breakpoint
*b
;
6805 struct bp_location
*loc
;
6807 gdb_assert (bpt
!= NULL
);
6809 /* Has this bp already been deleted? This can happen because multiple
6810 lists can hold pointers to bp's. bpstat lists are especial culprits.
6812 One example of this happening is a watchpoint's scope bp. When the
6813 scope bp triggers, we notice that the watchpoint is out of scope, and
6814 delete it. We also delete its scope bp. But the scope bp is marked
6815 "auto-deleting", and is already on a bpstat. That bpstat is then
6816 checked for auto-deleting bp's, which are deleted.
6818 A real solution to this problem might involve reference counts in bp's,
6819 and/or giving them pointers back to their referencing bpstat's, and
6820 teaching delete_breakpoint to only free a bp's storage when no more
6821 references were extent. A cheaper bandaid was chosen. */
6822 if (bpt
->type
== bp_none
)
6825 if (deprecated_delete_breakpoint_hook
)
6826 deprecated_delete_breakpoint_hook (bpt
);
6827 breakpoint_delete_event (bpt
->number
);
6829 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6832 remove_breakpoint (loc
, mark_inserted
);
6834 free_valchain (loc
);
6839 if (loc
->function_name
)
6840 xfree (loc
->function_name
);
6843 if (breakpoint_chain
== bpt
)
6844 breakpoint_chain
= bpt
->next
;
6849 b
->next
= bpt
->next
;
6853 unlink_locations_from_global_list (bpt
);
6855 check_duplicates (bpt
);
6857 if (bpt
->type
!= bp_hardware_watchpoint
6858 && bpt
->type
!= bp_read_watchpoint
6859 && bpt
->type
!= bp_access_watchpoint
6860 && bpt
->type
!= bp_catch_fork
6861 && bpt
->type
!= bp_catch_vfork
6862 && bpt
->type
!= bp_catch_exec
)
6863 for (loc
= bpt
->loc
; loc
; loc
= loc
->next
)
6865 /* If this breakpoint location was inserted, and there is
6866 another breakpoint at the same address, we need to
6867 insert the other breakpoint. */
6870 struct bp_location
*loc2
;
6871 ALL_BP_LOCATIONS (loc2
)
6872 if (loc2
->address
== loc
->address
6873 && loc2
->section
== loc
->section
6875 && loc2
->owner
->enable_state
!= bp_disabled
6877 && !loc2
->shlib_disabled
6878 && loc2
->owner
->enable_state
!= bp_call_disabled
)
6882 /* We should never reach this point if there is a permanent
6883 breakpoint at the same address as the one being deleted.
6884 If there is a permanent breakpoint somewhere, it should
6885 always be the only one inserted. */
6886 if (loc2
->owner
->enable_state
== bp_permanent
)
6887 internal_error (__FILE__
, __LINE__
,
6888 _("another breakpoint was inserted on top of "
6889 "a permanent breakpoint"));
6891 memset (&loc2
->target_info
, 0, sizeof (loc2
->target_info
));
6892 loc2
->target_info
.placed_address
= loc2
->address
;
6893 if (b
->type
== bp_hardware_breakpoint
)
6894 val
= target_insert_hw_breakpoint (&loc2
->target_info
);
6896 val
= target_insert_breakpoint (&loc2
->target_info
);
6898 /* If there was an error in the insert, print a message, then stop execution. */
6901 struct ui_file
*tmp_error_stream
= mem_fileopen ();
6902 make_cleanup_ui_file_delete (tmp_error_stream
);
6905 if (b
->type
== bp_hardware_breakpoint
)
6907 fprintf_unfiltered (tmp_error_stream
,
6908 "Cannot insert hardware breakpoint %d.\n"
6909 "You may have requested too many hardware breakpoints.\n",
6914 fprintf_unfiltered (tmp_error_stream
, "Cannot insert breakpoint %d.\n", b
->number
);
6915 fprintf_filtered (tmp_error_stream
, "Error accessing memory address ");
6916 deprecated_print_address_numeric (loc2
->address
, 1, tmp_error_stream
);
6917 fprintf_filtered (tmp_error_stream
, ": %s.\n",
6918 safe_strerror (val
));
6921 fprintf_unfiltered (tmp_error_stream
,"The same program may be running in another process.");
6922 target_terminal_ours_for_output ();
6923 error_stream(tmp_error_stream
);
6931 free_command_lines (&bpt
->commands
);
6932 if (bpt
->cond_string
!= NULL
)
6933 xfree (bpt
->cond_string
);
6934 if (bpt
->addr_string
!= NULL
)
6935 xfree (bpt
->addr_string
);
6936 if (bpt
->exp
!= NULL
)
6938 if (bpt
->exp_string
!= NULL
)
6939 xfree (bpt
->exp_string
);
6940 if (bpt
->val
!= NULL
)
6941 value_free (bpt
->val
);
6942 if (bpt
->source_file
!= NULL
)
6943 xfree (bpt
->source_file
);
6944 if (bpt
->dll_pathname
!= NULL
)
6945 xfree (bpt
->dll_pathname
);
6946 if (bpt
->triggered_dll_pathname
!= NULL
)
6947 xfree (bpt
->triggered_dll_pathname
);
6948 if (bpt
->exec_pathname
!= NULL
)
6949 xfree (bpt
->exec_pathname
);
6951 /* Be sure no bpstat's are pointing at it after it's been freed. */
6952 /* FIXME, how can we find all bpstat's?
6953 We just check stop_bpstat for now. Note that we cannot just
6954 remove bpstats pointing at bpt from the stop_bpstat list
6955 entirely, as breakpoint commands are associated with the bpstat;
6956 if we remove it here, then the later call to
6957 bpstat_do_actions (&stop_bpstat);
6958 in event-top.c won't do anything, and temporary breakpoints
6959 with commands won't work. */
6960 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6961 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->owner
== bpt
)
6963 bs
->breakpoint_at
= NULL
;
6965 /* bs->commands will be freed later. */
6967 /* On the chance that someone will soon try again to delete this same
6968 bp, we mark it as deleted before freeing its storage. */
6969 bpt
->type
= bp_none
;
6971 for (loc
= bpt
->loc
; loc
;)
6973 struct bp_location
*loc_next
= loc
->next
;
6981 do_delete_breakpoint_cleanup (void *b
)
6983 delete_breakpoint (b
);
6987 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6989 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6993 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6995 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6999 delete_command (char *arg
, int from_tty
)
7001 struct breakpoint
*b
, *temp
;
7007 int breaks_to_delete
= 0;
7009 /* Delete all breakpoints if no argument.
7010 Do not delete internal or call-dummy breakpoints, these
7011 have to be deleted with an explicit breakpoint number argument. */
7014 if (b
->type
!= bp_call_dummy
&&
7015 b
->type
!= bp_shlib_event
&&
7016 b
->type
!= bp_thread_event
&&
7017 b
->type
!= bp_overlay_event
&&
7020 breaks_to_delete
= 1;
7025 /* Ask user only if there are some breakpoints to delete. */
7027 || (breaks_to_delete
&& query (_("Delete all breakpoints? "))))
7029 ALL_BREAKPOINTS_SAFE (b
, temp
)
7031 if (b
->type
!= bp_call_dummy
&&
7032 b
->type
!= bp_shlib_event
&&
7033 b
->type
!= bp_thread_event
&&
7034 b
->type
!= bp_overlay_event
&&
7036 delete_breakpoint (b
);
7041 map_breakpoint_numbers (arg
, delete_breakpoint
);
7045 all_locations_are_pending (struct bp_location
*loc
)
7047 for (; loc
; loc
= loc
->next
)
7048 if (!loc
->shlib_disabled
)
7054 update_breakpoint_locations (struct breakpoint
*b
,
7055 struct symtabs_and_lines sals
)
7059 struct bp_location
*existing_locations
= b
->loc
;
7061 /* If there's no new locations, and all existing locations
7062 are pending, don't do anything. This optimizes
7063 the common case where all locations are in the same
7064 shared library, that was unloaded. We'd like to
7065 retain the location, so that when the library
7066 is loaded again, we don't loose the enabled/disabled
7067 status of the individual locations. */
7068 if (all_locations_are_pending (existing_locations
) && sals
.nelts
== 0)
7071 unlink_locations_from_global_list (b
);
7074 for (i
= 0; i
< sals
.nelts
; ++i
)
7076 struct bp_location
*new_loc
=
7077 add_location_to_breakpoint (b
, b
->type
, &(sals
.sals
[i
]));
7079 /* Reparse conditions, they might contain references to the
7081 if (b
->cond_string
!= NULL
)
7083 struct gdb_exception e
;
7086 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7088 new_loc
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
),
7093 warning (_("failed to reevaluate condition for breakpoint %d: %s"),
7094 b
->number
, e
.message
);
7095 new_loc
->enabled
= 0;
7099 if (b
->source_file
!= NULL
)
7100 xfree (b
->source_file
);
7101 if (sals
.sals
[i
].symtab
== NULL
)
7102 b
->source_file
= NULL
;
7105 savestring (sals
.sals
[i
].symtab
->filename
,
7106 strlen (sals
.sals
[i
].symtab
->filename
));
7108 if (b
->line_number
== 0)
7109 b
->line_number
= sals
.sals
[i
].line
;
7112 /* If possible, carry over 'disable' status from existing breakpoints. */
7114 struct bp_location
*e
= existing_locations
;
7115 for (; e
; e
= e
->next
)
7117 if (!e
->enabled
&& e
->function_name
)
7119 struct bp_location
*l
= b
->loc
;
7120 for (; l
; l
= l
->next
)
7121 if (l
->function_name
7122 && strcmp (e
->function_name
, l
->function_name
) == 0)
7131 while (existing_locations
)
7133 struct bp_location
*next
= existing_locations
->next
;
7134 free_bp_location (existing_locations
);
7135 existing_locations
= next
;
7140 /* Reset a breakpoint given it's struct breakpoint * BINT.
7141 The value we return ends up being the return value from catch_errors.
7142 Unused in this case. */
7145 breakpoint_re_set_one (void *bint
)
7147 /* get past catch_errs */
7148 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7152 int *not_found_ptr
= ¬_found
;
7153 struct symtabs_and_lines sals
= {};
7154 struct symtabs_and_lines expanded
;
7156 enum enable_state save_enable
;
7157 struct gdb_exception e
;
7163 warning (_("attempted to reset apparently deleted breakpoint #%d?"),
7167 case bp_hardware_breakpoint
:
7169 case bp_catch_unload
:
7170 if (b
->addr_string
== NULL
)
7172 /* Anything without a string can't be re-set. */
7173 delete_breakpoint (b
);
7177 set_language (b
->language
);
7178 input_radix
= b
->input_radix
;
7180 TRY_CATCH (e
, RETURN_MASK_ERROR
)
7182 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
,
7187 int not_found_and_ok
= 0;
7188 /* For pending breakpoints, it's expected that parsing
7189 will fail until the right shared library is loaded.
7190 User has already told to create pending breakpoints and
7191 don't need extra messages. If breakpoint is in bp_shlib_disabled
7192 state, then user already saw the message about that breakpoint
7193 being disabled, and don't want to see more errors. */
7195 && (b
->condition_not_parsed
7196 || (b
->loc
&& b
->loc
->shlib_disabled
)
7197 || b
->enable_state
== bp_disabled
))
7198 not_found_and_ok
= 1;
7200 if (!not_found_and_ok
)
7202 /* We surely don't want to warn about the same breakpoint
7203 10 times. One solution, implemented here, is disable
7204 the breakpoint on error. Another solution would be to
7205 have separate 'warning emitted' flag. Since this
7206 happens only when a binary has changed, I don't know
7207 which approach is better. */
7208 b
->enable_state
= bp_disabled
;
7209 throw_exception (e
);
7216 gdb_assert (sals
.nelts
== 1);
7217 resolve_sal_pc (&sals
.sals
[0]);
7218 if (b
->condition_not_parsed
&& s
&& s
[0])
7220 char *cond_string
= 0;
7222 find_condition_and_thread (s
, sals
.sals
[0].pc
,
7223 &cond_string
, &thread
);
7225 b
->cond_string
= cond_string
;
7227 b
->condition_not_parsed
= 0;
7229 expanded
= expand_line_sal_maybe (sals
.sals
[0]);
7230 update_breakpoint_locations (b
, expanded
);
7232 /* Now that this is re-enabled, check_duplicates
7234 check_duplicates (b
);
7240 case bp_hardware_watchpoint
:
7241 case bp_read_watchpoint
:
7242 case bp_access_watchpoint
:
7243 innermost_block
= NULL
;
7244 /* The issue arises of what context to evaluate this in. The
7245 same one as when it was set, but what does that mean when
7246 symbols have been re-read? We could save the filename and
7247 functionname, but if the context is more local than that, the
7248 best we could do would be something like how many levels deep
7249 and which index at that particular level, but that's going to
7250 be less stable than filenames or function names. */
7252 /* So for now, just use a global context. */
7256 /* Avoid re-freeing b->exp if an error during the call to
7257 parse_expression. */
7260 b
->exp
= parse_expression (b
->exp_string
);
7261 b
->exp_valid_block
= innermost_block
;
7262 mark
= value_mark ();
7265 value_free (b
->val
);
7266 /* Avoid re-freeing b->val if an error during the call to
7267 evaluate_expression. */
7270 b
->val
= evaluate_expression (b
->exp
);
7271 release_value (b
->val
);
7272 if (value_lazy (b
->val
) && breakpoint_enabled (b
))
7273 value_fetch_lazy (b
->val
);
7275 if (b
->cond_string
!= NULL
)
7280 xfree (b
->loc
->cond
);
7281 /* Avoid re-freeing b->exp if an error during the call
7283 b
->loc
->cond
= NULL
;
7285 b
->loc
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7287 if (breakpoint_enabled (b
))
7289 value_free_to_mark (mark
);
7291 /* We needn't really do anything to reset these, since the mask
7292 that requests them is unaffected by e.g., new libraries being
7295 case bp_catch_vfork
:
7300 printf_filtered (_("Deleting unknown breakpoint type %d\n"), b
->type
);
7302 /* Delete longjmp and overlay event breakpoints; they will be
7303 reset later by breakpoint_re_set. */
7305 case bp_longjmp_resume
:
7306 case bp_overlay_event
:
7307 delete_breakpoint (b
);
7310 /* This breakpoint is special, it's set up when the inferior
7311 starts and we really don't want to touch it. */
7312 case bp_shlib_event
:
7314 /* Like bp_shlib_event, this breakpoint type is special.
7315 Once it is set up, we do not want to touch it. */
7316 case bp_thread_event
:
7318 /* Keep temporary breakpoints, which can be encountered when we step
7319 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7320 Otherwise these should have been blown away via the cleanup chain
7321 or by breakpoint_init_inferior when we rerun the executable. */
7324 case bp_watchpoint_scope
:
7326 case bp_step_resume
:
7333 /* Re-set all breakpoints after symbols have been re-loaded. */
7335 breakpoint_re_set (void)
7337 struct breakpoint
*b
, *temp
;
7338 enum language save_language
;
7339 int save_input_radix
;
7341 save_language
= current_language
->la_language
;
7342 save_input_radix
= input_radix
;
7343 ALL_BREAKPOINTS_SAFE (b
, temp
)
7345 /* Format possible error msg */
7346 char *message
= xstrprintf ("Error in re-setting breakpoint %d: ",
7348 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7349 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7350 do_cleanups (cleanups
);
7352 set_language (save_language
);
7353 input_radix
= save_input_radix
;
7355 if (gdbarch_get_longjmp_target_p (current_gdbarch
))
7357 create_longjmp_breakpoint ("longjmp");
7358 create_longjmp_breakpoint ("_longjmp");
7359 create_longjmp_breakpoint ("siglongjmp");
7360 create_longjmp_breakpoint ("_siglongjmp");
7361 create_longjmp_breakpoint (NULL
);
7364 create_overlay_event_breakpoint ("_ovly_debug_event");
7367 /* Reset the thread number of this breakpoint:
7369 - If the breakpoint is for all threads, leave it as-is.
7370 - Else, reset it to the current thread for inferior_ptid. */
7372 breakpoint_re_set_thread (struct breakpoint
*b
)
7374 if (b
->thread
!= -1)
7376 if (in_thread_list (inferior_ptid
))
7377 b
->thread
= pid_to_thread_id (inferior_ptid
);
7381 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7382 If from_tty is nonzero, it prints a message to that effect,
7383 which ends with a period (no newline). */
7386 set_ignore_count (int bptnum
, int count
, int from_tty
)
7388 struct breakpoint
*b
;
7394 if (b
->number
== bptnum
)
7396 b
->ignore_count
= count
;
7400 printf_filtered (_("Will stop next time breakpoint %d is reached."),
7402 else if (count
== 1)
7403 printf_filtered (_("Will ignore next crossing of breakpoint %d."),
7406 printf_filtered (_("Will ignore next %d crossings of breakpoint %d."),
7409 breakpoints_changed ();
7410 breakpoint_modify_event (b
->number
);
7414 error (_("No breakpoint number %d."), bptnum
);
7417 /* Clear the ignore counts of all breakpoints. */
7419 breakpoint_clear_ignore_counts (void)
7421 struct breakpoint
*b
;
7424 b
->ignore_count
= 0;
7427 /* Command to set ignore-count of breakpoint N to COUNT. */
7430 ignore_command (char *args
, int from_tty
)
7436 error_no_arg (_("a breakpoint number"));
7438 num
= get_number (&p
);
7440 error (_("bad breakpoint number: '%s'"), args
);
7442 error (_("Second argument (specified ignore-count) is missing."));
7444 set_ignore_count (num
,
7445 longest_to_int (value_as_long (parse_and_eval (p
))),
7448 printf_filtered ("\n");
7451 /* Call FUNCTION on each of the breakpoints
7452 whose numbers are given in ARGS. */
7455 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7460 struct breakpoint
*b
, *tmp
;
7464 error_no_arg (_("one or more breakpoint numbers"));
7471 num
= get_number_or_range (&p1
);
7474 warning (_("bad breakpoint number at or near '%s'"), p
);
7478 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7479 if (b
->number
== num
)
7481 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7484 if (related_breakpoint
)
7485 function (related_breakpoint
);
7489 printf_unfiltered (_("No breakpoint number %d.\n"), num
);
7495 static struct bp_location
*
7496 find_location_by_number (char *number
)
7498 char *dot
= strchr (number
, '.');
7502 struct breakpoint
*b
;
7503 struct bp_location
*loc
;
7508 bp_num
= get_number_or_range (&p1
);
7510 error (_("Bad breakpoint number '%s'"), number
);
7513 if (b
->number
== bp_num
)
7518 if (!b
|| b
->number
!= bp_num
)
7519 error (_("Bad breakpoint number '%s'"), number
);
7522 loc_num
= get_number_or_range (&p1
);
7524 error (_("Bad breakpoint location number '%s'"), number
);
7528 for (;loc_num
&& loc
; --loc_num
, loc
= loc
->next
)
7531 error (_("Bad breakpoint location number '%s'"), dot
+1);
7537 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7538 If from_tty is nonzero, it prints a message to that effect,
7539 which ends with a period (no newline). */
7542 disable_breakpoint (struct breakpoint
*bpt
)
7544 /* Never disable a watchpoint scope breakpoint; we want to
7545 hit them when we leave scope so we can delete both the
7546 watchpoint and its scope breakpoint at that time. */
7547 if (bpt
->type
== bp_watchpoint_scope
)
7550 /* You can't disable permanent breakpoints. */
7551 if (bpt
->enable_state
== bp_permanent
)
7554 bpt
->enable_state
= bp_disabled
;
7556 check_duplicates (bpt
);
7558 if (deprecated_modify_breakpoint_hook
)
7559 deprecated_modify_breakpoint_hook (bpt
);
7560 breakpoint_modify_event (bpt
->number
);
7564 disable_command (char *args
, int from_tty
)
7566 struct breakpoint
*bpt
;
7568 ALL_BREAKPOINTS (bpt
)
7572 warning (_("attempted to disable apparently deleted breakpoint #%d?"),
7577 case bp_catch_unload
:
7579 case bp_catch_vfork
:
7581 case bp_hardware_breakpoint
:
7583 case bp_hardware_watchpoint
:
7584 case bp_read_watchpoint
:
7585 case bp_access_watchpoint
:
7586 disable_breakpoint (bpt
);
7590 else if (strchr (args
, '.'))
7592 struct bp_location
*loc
= find_location_by_number (args
);
7595 check_duplicates (loc
->owner
);
7598 map_breakpoint_numbers (args
, disable_breakpoint
);
7602 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7604 int target_resources_ok
, other_type_used
;
7607 if (bpt
->type
== bp_hardware_breakpoint
)
7610 i
= hw_breakpoint_used_count ();
7611 target_resources_ok
=
7612 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7614 if (target_resources_ok
== 0)
7615 error (_("No hardware breakpoint support in the target."));
7616 else if (target_resources_ok
< 0)
7617 error (_("Hardware breakpoints used exceeds limit."));
7620 if (bpt
->type
== bp_watchpoint
||
7621 bpt
->type
== bp_hardware_watchpoint
||
7622 bpt
->type
== bp_read_watchpoint
||
7623 bpt
->type
== bp_access_watchpoint
)
7625 struct frame_id saved_frame_id
;
7627 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
7628 if (bpt
->exp_valid_block
!= NULL
)
7630 struct frame_info
*fr
=
7631 fr
= frame_find_by_id (bpt
->watchpoint_frame
);
7634 printf_filtered (_("\
7635 Cannot enable watchpoint %d because the block in which its expression\n\
7636 is valid is not currently in scope.\n"), bpt
->number
);
7643 value_free (bpt
->val
);
7644 mark
= value_mark ();
7645 bpt
->val
= evaluate_expression (bpt
->exp
);
7646 release_value (bpt
->val
);
7647 if (value_lazy (bpt
->val
))
7648 value_fetch_lazy (bpt
->val
);
7650 if (bpt
->type
== bp_hardware_watchpoint
||
7651 bpt
->type
== bp_read_watchpoint
||
7652 bpt
->type
== bp_access_watchpoint
)
7654 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7655 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7657 /* Hack around 'unused var' error for some targets here */
7658 (void) mem_cnt
, (void) i
;
7659 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7660 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7661 /* we can consider of type is bp_hardware_watchpoint, convert to
7662 bp_watchpoint in the following condition */
7663 if (target_resources_ok
< 0)
7665 printf_filtered (_("\
7666 Cannot enable watchpoint %d because target watch resources\n\
7667 have been allocated for other watchpoints.\n"), bpt
->number
);
7668 value_free_to_mark (mark
);
7673 select_frame (frame_find_by_id (saved_frame_id
));
7674 value_free_to_mark (mark
);
7677 if (bpt
->enable_state
!= bp_permanent
)
7678 bpt
->enable_state
= bp_enabled
;
7679 bpt
->disposition
= disposition
;
7680 check_duplicates (bpt
);
7681 breakpoints_changed ();
7683 if (deprecated_modify_breakpoint_hook
)
7684 deprecated_modify_breakpoint_hook (bpt
);
7685 breakpoint_modify_event (bpt
->number
);
7690 enable_breakpoint (struct breakpoint
*bpt
)
7692 do_enable_breakpoint (bpt
, bpt
->disposition
);
7695 /* The enable command enables the specified breakpoints (or all defined
7696 breakpoints) so they once again become (or continue to be) effective
7697 in stopping the inferior. */
7700 enable_command (char *args
, int from_tty
)
7702 struct breakpoint
*bpt
;
7704 ALL_BREAKPOINTS (bpt
)
7708 warning (_("attempted to enable apparently deleted breakpoint #%d?"),
7713 case bp_catch_unload
:
7715 case bp_catch_vfork
:
7717 case bp_hardware_breakpoint
:
7719 case bp_hardware_watchpoint
:
7720 case bp_read_watchpoint
:
7721 case bp_access_watchpoint
:
7722 enable_breakpoint (bpt
);
7726 else if (strchr (args
, '.'))
7728 struct bp_location
*loc
= find_location_by_number (args
);
7731 check_duplicates (loc
->owner
);
7734 map_breakpoint_numbers (args
, enable_breakpoint
);
7738 enable_once_breakpoint (struct breakpoint
*bpt
)
7740 do_enable_breakpoint (bpt
, disp_disable
);
7744 enable_once_command (char *args
, int from_tty
)
7746 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7750 enable_delete_breakpoint (struct breakpoint
*bpt
)
7752 do_enable_breakpoint (bpt
, disp_del
);
7756 enable_delete_command (char *args
, int from_tty
)
7758 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7762 set_breakpoint_cmd (char *args
, int from_tty
)
7767 show_breakpoint_cmd (char *args
, int from_tty
)
7771 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7773 struct symtabs_and_lines
7774 decode_line_spec_1 (char *string
, int funfirstline
)
7776 struct symtabs_and_lines sals
;
7778 error (_("Empty line specification."));
7779 if (default_breakpoint_valid
)
7780 sals
= decode_line_1 (&string
, funfirstline
,
7781 default_breakpoint_symtab
,
7782 default_breakpoint_line
,
7783 (char ***) NULL
, NULL
);
7785 sals
= decode_line_1 (&string
, funfirstline
,
7786 (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7788 error (_("Junk at end of line specification: %s"), string
);
7792 /* Create and insert a raw software breakpoint at PC. Return an
7793 identifier, which should be used to remove the breakpoint later.
7794 In general, places which call this should be using something on the
7795 breakpoint chain instead; this function should be eliminated
7799 deprecated_insert_raw_breakpoint (CORE_ADDR pc
)
7801 struct bp_target_info
*bp_tgt
;
7803 bp_tgt
= xmalloc (sizeof (struct bp_target_info
));
7804 memset (bp_tgt
, 0, sizeof (struct bp_target_info
));
7806 bp_tgt
->placed_address
= pc
;
7807 if (target_insert_breakpoint (bp_tgt
) != 0)
7809 /* Could not insert the breakpoint. */
7817 /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
7820 deprecated_remove_raw_breakpoint (void *bp
)
7822 struct bp_target_info
*bp_tgt
= bp
;
7825 ret
= target_remove_breakpoint (bp_tgt
);
7831 /* One (or perhaps two) breakpoints used for software single stepping. */
7833 static void *single_step_breakpoints
[2];
7835 /* Create and insert a breakpoint for software single step. */
7838 insert_single_step_breakpoint (CORE_ADDR next_pc
)
7842 if (single_step_breakpoints
[0] == NULL
)
7843 bpt_p
= &single_step_breakpoints
[0];
7846 gdb_assert (single_step_breakpoints
[1] == NULL
);
7847 bpt_p
= &single_step_breakpoints
[1];
7850 /* NOTE drow/2006-04-11: A future improvement to this function would be
7851 to only create the breakpoints once, and actually put them on the
7852 breakpoint chain. That would let us use set_raw_breakpoint. We could
7853 adjust the addresses each time they were needed. Doing this requires
7854 corresponding changes elsewhere where single step breakpoints are
7855 handled, however. So, for now, we use this. */
7857 *bpt_p
= deprecated_insert_raw_breakpoint (next_pc
);
7859 error (_("Could not insert single-step breakpoint at 0x%s"),
7860 paddr_nz (next_pc
));
7863 /* Remove and delete any breakpoints used for software single step. */
7866 remove_single_step_breakpoints (void)
7868 gdb_assert (single_step_breakpoints
[0] != NULL
);
7870 /* See insert_single_step_breakpoint for more about this deprecated
7872 deprecated_remove_raw_breakpoint (single_step_breakpoints
[0]);
7873 single_step_breakpoints
[0] = NULL
;
7875 if (single_step_breakpoints
[1] != NULL
)
7877 deprecated_remove_raw_breakpoint (single_step_breakpoints
[1]);
7878 single_step_breakpoints
[1] = NULL
;
7882 /* Check whether a software single-step breakpoint is inserted at PC. */
7885 single_step_breakpoint_inserted_here_p (CORE_ADDR pc
)
7889 for (i
= 0; i
< 2; i
++)
7891 struct bp_target_info
*bp_tgt
= single_step_breakpoints
[i
];
7892 if (bp_tgt
&& bp_tgt
->placed_address
== pc
)
7900 /* This help string is used for the break, hbreak, tbreak and thbreak commands.
7901 It is defined as a macro to prevent duplication.
7902 COMMAND should be a string constant containing the name of the command. */
7903 #define BREAK_ARGS_HELP(command) \
7904 command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\
7905 LOCATION may be a line number, function name, or \"*\" and an address.\n\
7906 If a line number is specified, break at start of code for that line.\n\
7907 If a function is specified, break at start of code for that function.\n\
7908 If an address is specified, break at that exact address.\n\
7909 With no LOCATION, uses current execution address of selected stack frame.\n\
7910 This is useful for breaking on return to a stack frame.\n\
7912 THREADNUM is the number from \"info threads\".\n\
7913 CONDITION is a boolean expression.\n\
7915 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7917 Do \"help breakpoints\" for info on other commands dealing with breakpoints."
7920 _initialize_breakpoint (void)
7922 static struct cmd_list_element
*breakpoint_set_cmdlist
;
7923 static struct cmd_list_element
*breakpoint_show_cmdlist
;
7924 struct cmd_list_element
*c
;
7926 observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib
);
7928 breakpoint_chain
= 0;
7929 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7930 before a breakpoint is set. */
7931 breakpoint_count
= 0;
7933 add_com ("ignore", class_breakpoint
, ignore_command
, _("\
7934 Set ignore-count of breakpoint number N to COUNT.\n\
7935 Usage is `ignore N COUNT'."));
7937 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7939 add_com ("commands", class_breakpoint
, commands_command
, _("\
7940 Set commands to be executed when a breakpoint is hit.\n\
7941 Give breakpoint number as argument after \"commands\".\n\
7942 With no argument, the targeted breakpoint is the last one set.\n\
7943 The commands themselves follow starting on the next line.\n\
7944 Type a line containing \"end\" to indicate the end of them.\n\
7945 Give \"silent\" as the first line to make the breakpoint silent;\n\
7946 then no output is printed when it is hit, except what the commands print."));
7948 add_com ("condition", class_breakpoint
, condition_command
, _("\
7949 Specify breakpoint number N to break only if COND is true.\n\
7950 Usage is `condition N COND', where N is an integer and COND is an\n\
7951 expression to be evaluated whenever breakpoint N is reached."));
7953 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
, _("\
7954 Set a temporary breakpoint.\n\
7955 Like \"break\" except the breakpoint is only temporary,\n\
7956 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7957 by using \"enable delete\" on the breakpoint number.\n\
7959 BREAK_ARGS_HELP ("tbreak")));
7960 set_cmd_completer (c
, location_completer
);
7962 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
, _("\
7963 Set a hardware assisted breakpoint.\n\
7964 Like \"break\" except the breakpoint requires hardware support,\n\
7965 some target hardware may not have this support.\n\
7967 BREAK_ARGS_HELP ("hbreak")));
7968 set_cmd_completer (c
, location_completer
);
7970 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
, _("\
7971 Set a temporary hardware assisted breakpoint.\n\
7972 Like \"hbreak\" except the breakpoint is only temporary,\n\
7973 so it will be deleted when hit.\n\
7975 BREAK_ARGS_HELP ("thbreak")));
7976 set_cmd_completer (c
, location_completer
);
7978 add_prefix_cmd ("enable", class_breakpoint
, enable_command
, _("\
7979 Enable some breakpoints.\n\
7980 Give breakpoint numbers (separated by spaces) as arguments.\n\
7981 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7982 This is used to cancel the effect of the \"disable\" command.\n\
7983 With a subcommand you can enable temporarily."),
7984 &enablelist
, "enable ", 1, &cmdlist
);
7986 add_com ("ab", class_breakpoint
, enable_command
, _("\
7987 Enable some breakpoints.\n\
7988 Give breakpoint numbers (separated by spaces) as arguments.\n\
7989 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7990 This is used to cancel the effect of the \"disable\" command.\n\
7991 With a subcommand you can enable temporarily."));
7993 add_com_alias ("en", "enable", class_breakpoint
, 1);
7995 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
, _("\
7996 Enable some breakpoints.\n\
7997 Give breakpoint numbers (separated by spaces) as arguments.\n\
7998 This is used to cancel the effect of the \"disable\" command.\n\
7999 May be abbreviated to simply \"enable\".\n"),
8000 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
8002 add_cmd ("once", no_class
, enable_once_command
, _("\
8003 Enable breakpoints for one hit. Give breakpoint numbers.\n\
8004 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
8007 add_cmd ("delete", no_class
, enable_delete_command
, _("\
8008 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
8009 If a breakpoint is hit while enabled in this fashion, it is deleted."),
8012 add_cmd ("delete", no_class
, enable_delete_command
, _("\
8013 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
8014 If a breakpoint is hit while enabled in this fashion, it is deleted."),
8017 add_cmd ("once", no_class
, enable_once_command
, _("\
8018 Enable breakpoints for one hit. Give breakpoint numbers.\n\
8019 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
8022 add_prefix_cmd ("disable", class_breakpoint
, disable_command
, _("\
8023 Disable some breakpoints.\n\
8024 Arguments are breakpoint numbers with spaces in between.\n\
8025 To disable all breakpoints, give no argument.\n\
8026 A disabled breakpoint is not forgotten, but has no effect until reenabled."),
8027 &disablelist
, "disable ", 1, &cmdlist
);
8028 add_com_alias ("dis", "disable", class_breakpoint
, 1);
8029 add_com_alias ("disa", "disable", class_breakpoint
, 1);
8031 add_com ("sb", class_breakpoint
, disable_command
, _("\
8032 Disable some breakpoints.\n\
8033 Arguments are breakpoint numbers with spaces in between.\n\
8034 To disable all breakpoints, give no argument.\n\
8035 A disabled breakpoint is not forgotten, but has no effect until reenabled."));
8037 add_cmd ("breakpoints", class_alias
, disable_command
, _("\
8038 Disable some breakpoints.\n\
8039 Arguments are breakpoint numbers with spaces in between.\n\
8040 To disable all breakpoints, give no argument.\n\
8041 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
8042 This command may be abbreviated \"disable\"."),
8045 add_prefix_cmd ("delete", class_breakpoint
, delete_command
, _("\
8046 Delete some breakpoints or auto-display expressions.\n\
8047 Arguments are breakpoint numbers with spaces in between.\n\
8048 To delete all breakpoints, give no argument.\n\
8050 Also a prefix command for deletion of other GDB objects.\n\
8051 The \"unset\" command is also an alias for \"delete\"."),
8052 &deletelist
, "delete ", 1, &cmdlist
);
8053 add_com_alias ("d", "delete", class_breakpoint
, 1);
8054 add_com_alias ("del", "delete", class_breakpoint
, 1);
8056 add_com ("db", class_breakpoint
, delete_command
, _("\
8057 Delete some breakpoints.\n\
8058 Arguments are breakpoint numbers with spaces in between.\n\
8059 To delete all breakpoints, give no argument.\n"));
8061 add_cmd ("breakpoints", class_alias
, delete_command
, _("\
8062 Delete some breakpoints or auto-display expressions.\n\
8063 Arguments are breakpoint numbers with spaces in between.\n\
8064 To delete all breakpoints, give no argument.\n\
8065 This command may be abbreviated \"delete\"."),
8068 add_com ("clear", class_breakpoint
, clear_command
, _("\
8069 Clear breakpoint at specified line or function.\n\
8070 Argument may be line number, function name, or \"*\" and an address.\n\
8071 If line number is specified, all breakpoints in that line are cleared.\n\
8072 If function is specified, breakpoints at beginning of function are cleared.\n\
8073 If an address is specified, breakpoints at that address are cleared.\n\
8075 With no argument, clears all breakpoints in the line that the selected frame\n\
8078 See also the \"delete\" command which clears breakpoints by number."));
8080 c
= add_com ("break", class_breakpoint
, break_command
, _("\
8081 Set breakpoint at specified line or function.\n"
8082 BREAK_ARGS_HELP ("break")));
8083 set_cmd_completer (c
, location_completer
);
8085 add_com_alias ("b", "break", class_run
, 1);
8086 add_com_alias ("br", "break", class_run
, 1);
8087 add_com_alias ("bre", "break", class_run
, 1);
8088 add_com_alias ("brea", "break", class_run
, 1);
8092 add_com_alias ("ba", "break", class_breakpoint
, 1);
8093 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
8098 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
, _("\
8099 Break in function/address or break at a line in the current file."),
8100 &stoplist
, "stop ", 1, &cmdlist
);
8101 add_cmd ("in", class_breakpoint
, stopin_command
,
8102 _("Break in function or address."), &stoplist
);
8103 add_cmd ("at", class_breakpoint
, stopat_command
,
8104 _("Break at a line in the current file."), &stoplist
);
8105 add_com ("status", class_info
, breakpoints_info
, _("\
8106 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8107 The \"Type\" column indicates one of:\n\
8108 \tbreakpoint - normal breakpoint\n\
8109 \twatchpoint - watchpoint\n\
8110 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8111 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8112 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8113 address and file/line number respectively.\n\
8115 Convenience variable \"$_\" and default examine address for \"x\"\n\
8116 are set to the address of the last breakpoint listed unless the command\n\
8117 is prefixed with \"server \".\n\n\
8118 Convenience variable \"$bpnum\" contains the number of the last\n\
8122 add_info ("breakpoints", breakpoints_info
, _("\
8123 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8124 The \"Type\" column indicates one of:\n\
8125 \tbreakpoint - normal breakpoint\n\
8126 \twatchpoint - watchpoint\n\
8127 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8128 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8129 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8130 address and file/line number respectively.\n\
8132 Convenience variable \"$_\" and default examine address for \"x\"\n\
8133 are set to the address of the last breakpoint listed unless the command\n\
8134 is prefixed with \"server \".\n\n\
8135 Convenience variable \"$bpnum\" contains the number of the last\n\
8139 add_com ("lb", class_breakpoint
, breakpoints_info
, _("\
8140 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8141 The \"Type\" column indicates one of:\n\
8142 \tbreakpoint - normal breakpoint\n\
8143 \twatchpoint - watchpoint\n\
8144 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8145 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8146 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8147 address and file/line number respectively.\n\
8149 Convenience variable \"$_\" and default examine address for \"x\"\n\
8150 are set to the address of the last breakpoint listed unless the command\n\
8151 is prefixed with \"server \".\n\n\
8152 Convenience variable \"$bpnum\" contains the number of the last\n\
8155 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
, _("\
8156 Status of all breakpoints, or breakpoint number NUMBER.\n\
8157 The \"Type\" column indicates one of:\n\
8158 \tbreakpoint - normal breakpoint\n\
8159 \twatchpoint - watchpoint\n\
8160 \tlongjmp - internal breakpoint used to step through longjmp()\n\
8161 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
8162 \tuntil - internal breakpoint used by the \"until\" command\n\
8163 \tfinish - internal breakpoint used by the \"finish\" command\n\
8164 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8165 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8166 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8167 address and file/line number respectively.\n\
8169 Convenience variable \"$_\" and default examine address for \"x\"\n\
8170 are set to the address of the last breakpoint listed unless the command\n\
8171 is prefixed with \"server \".\n\n\
8172 Convenience variable \"$bpnum\" contains the number of the last\n\
8174 &maintenanceinfolist
);
8176 add_com ("catch", class_breakpoint
, catch_command
, _("\
8177 Set catchpoints to catch events.\n\
8178 Raised signals may be caught:\n\
8179 \tcatch signal - all signals\n\
8180 \tcatch signal <signame> - a particular signal\n\
8181 Raised exceptions may be caught:\n\
8182 \tcatch throw - all exceptions, when thrown\n\
8183 \tcatch throw <exceptname> - a particular exception, when thrown\n\
8184 \tcatch catch - all exceptions, when caught\n\
8185 \tcatch catch <exceptname> - a particular exception, when caught\n\
8186 Thread or process events may be caught:\n\
8187 \tcatch thread_start - any threads, just after creation\n\
8188 \tcatch thread_exit - any threads, just before expiration\n\
8189 \tcatch thread_join - any threads, just after joins\n\
8190 Process events may be caught:\n\
8191 \tcatch start - any processes, just after creation\n\
8192 \tcatch exit - any processes, just before expiration\n\
8193 \tcatch fork - calls to fork()\n\
8194 \tcatch vfork - calls to vfork()\n\
8195 \tcatch exec - calls to exec()\n\
8196 Dynamically-linked library events may be caught:\n\
8197 \tcatch load - loads of any library\n\
8198 \tcatch load <libname> - loads of a particular library\n\
8199 \tcatch unload - unloads of any library\n\
8200 \tcatch unload <libname> - unloads of a particular library\n\
8201 The act of your program's execution stopping may also be caught:\n\
8203 C++ exceptions may be caught:\n\
8204 \tcatch throw - all exceptions, when thrown\n\
8205 \tcatch catch - all exceptions, when caught\n\
8206 Ada exceptions may be caught:\n\
8207 \tcatch exception - all exceptions, when raised\n\
8208 \tcatch exception <name> - a particular exception, when raised\n\
8209 \tcatch exception unhandled - all unhandled exceptions, when raised\n\
8210 \tcatch assert - all failed assertions, when raised\n\
8212 Do \"help set follow-fork-mode\" for info on debugging your program\n\
8213 after a fork or vfork is caught.\n\n\
8214 Do \"help breakpoints\" for info on other commands dealing with breakpoints."));
8216 add_com ("tcatch", class_breakpoint
, tcatch_command
, _("\
8217 Set temporary catchpoints to catch events.\n\
8218 Args like \"catch\" command.\n\
8219 Like \"catch\" except the catchpoint is only temporary,\n\
8220 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
8221 by using \"enable delete\" on the catchpoint number."));
8223 c
= add_com ("watch", class_breakpoint
, watch_command
, _("\
8224 Set a watchpoint for an expression.\n\
8225 A watchpoint stops execution of your program whenever the value of\n\
8226 an expression changes."));
8227 set_cmd_completer (c
, location_completer
);
8229 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
, _("\
8230 Set a read watchpoint for an expression.\n\
8231 A watchpoint stops execution of your program whenever the value of\n\
8232 an expression is read."));
8233 set_cmd_completer (c
, location_completer
);
8235 c
= add_com ("awatch", class_breakpoint
, awatch_command
, _("\
8236 Set a watchpoint for an expression.\n\
8237 A watchpoint stops execution of your program whenever the value of\n\
8238 an expression is either read or written."));
8239 set_cmd_completer (c
, location_completer
);
8241 add_info ("watchpoints", breakpoints_info
,
8242 _("Synonym for ``info breakpoints''."));
8245 /* XXX: cagney/2005-02-23: This should be a boolean, and should
8246 respond to changes - contrary to the description. */
8247 add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support
,
8248 &can_use_hw_watchpoints
, _("\
8249 Set debugger's willingness to use watchpoint hardware."), _("\
8250 Show debugger's willingness to use watchpoint hardware."), _("\
8251 If zero, gdb will not use hardware for new watchpoints, even if\n\
8252 such is available. (However, any hardware watchpoints that were\n\
8253 created before setting this to nonzero, will continue to use watchpoint\n\
8256 show_can_use_hw_watchpoints
,
8257 &setlist
, &showlist
);
8259 can_use_hw_watchpoints
= 1;
8261 add_prefix_cmd ("breakpoint", class_maintenance
, set_breakpoint_cmd
, _("\
8262 Breakpoint specific settings\n\
8263 Configure various breakpoint-specific variables such as\n\
8264 pending breakpoint behavior"),
8265 &breakpoint_set_cmdlist
, "set breakpoint ",
8266 0/*allow-unknown*/, &setlist
);
8267 add_prefix_cmd ("breakpoint", class_maintenance
, show_breakpoint_cmd
, _("\
8268 Breakpoint specific settings\n\
8269 Configure various breakpoint-specific variables such as\n\
8270 pending breakpoint behavior"),
8271 &breakpoint_show_cmdlist
, "show breakpoint ",
8272 0/*allow-unknown*/, &showlist
);
8274 add_setshow_auto_boolean_cmd ("pending", no_class
,
8275 &pending_break_support
, _("\
8276 Set debugger's behavior regarding pending breakpoints."), _("\
8277 Show debugger's behavior regarding pending breakpoints."), _("\
8278 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8279 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8280 an error. If auto, an unrecognized breakpoint location results in a\n\
8281 user-query to see if a pending breakpoint should be created."),
8283 show_pending_break_support
,
8284 &breakpoint_set_cmdlist
,
8285 &breakpoint_show_cmdlist
);
8287 pending_break_support
= AUTO_BOOLEAN_AUTO
;
8289 add_setshow_boolean_cmd ("auto-hw", no_class
,
8290 &automatic_hardware_breakpoints
, _("\
8291 Set automatic usage of hardware breakpoints."), _("\
8292 Show automatic usage of hardware breakpoints."), _("\
8293 If set, the debugger will automatically use hardware breakpoints for\n\
8294 breakpoints set with \"break\" but falling in read-only memory. If not set,\n\
8295 a warning will be emitted for such breakpoints."),
8297 show_automatic_hardware_breakpoints
,
8298 &breakpoint_set_cmdlist
,
8299 &breakpoint_show_cmdlist
);
8301 automatic_hardware_breakpoints
= 1;