1 /* Everything about breakpoints, for GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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 2 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, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
28 #include "breakpoint.h"
30 #include "expression.h"
36 #include "gdbthread.h"
39 #include "gdb_string.h"
46 #include "completer.h"
49 #include "cli/cli-script.h"
50 #include "gdb_assert.h"
53 #include "gdb-events.h"
55 /* Prototypes for local functions. */
57 static void until_break_command_continuation (struct continuation_arg
*arg
);
59 static void catch_command_1 (char *, int, int);
61 static void enable_delete_command (char *, int);
63 static void enable_delete_breakpoint (struct breakpoint
*);
65 static void enable_once_command (char *, int);
67 static void enable_once_breakpoint (struct breakpoint
*);
69 static void disable_command (char *, int);
71 static void enable_command (char *, int);
73 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
75 static void ignore_command (char *, int);
77 static int breakpoint_re_set_one (void *);
79 static void clear_command (char *, int);
81 static void catch_command (char *, int);
83 static void watch_command (char *, int);
85 static int can_use_hardware_watchpoint (struct value
*);
87 extern void break_at_finish_command (char *, int);
88 extern void break_at_finish_at_depth_command (char *, int);
90 extern void tbreak_at_finish_command (char *, int);
92 static int break_command_1 (char *, int, int, struct breakpoint
*);
94 static void mention (struct breakpoint
*);
96 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
, enum bptype
);
98 static void check_duplicates (struct breakpoint
*);
100 static void breakpoint_adjustment_warning (CORE_ADDR
, CORE_ADDR
, int, int);
102 static CORE_ADDR
adjust_breakpoint_address (CORE_ADDR bpaddr
,
105 static void describe_other_breakpoints (CORE_ADDR
, asection
*);
107 static void breakpoints_info (char *, int);
109 static void breakpoint_1 (int, int);
111 static bpstat
bpstat_alloc (struct breakpoint
*, bpstat
);
113 static int breakpoint_cond_eval (void *);
115 static void cleanup_executing_breakpoints (void *);
117 static void commands_command (char *, int);
119 static void condition_command (char *, int);
121 static int get_number_trailer (char **, int);
123 static int do_captured_parse_breakpoint (struct ui_out
*, void *);
125 void set_breakpoint_count (int);
134 static int remove_breakpoint (struct bp_location
*, insertion_state_t
);
136 static enum print_stop_action
print_it_typical (bpstat
);
138 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
142 enum exception_event_kind kind
;
145 args_for_catchpoint_enable
;
147 static int watchpoint_check (void *);
149 static int cover_target_enable_exception_callback (void *);
151 static void maintenance_info_breakpoints (char *, int);
153 static void create_longjmp_breakpoint (char *);
155 static void create_overlay_event_breakpoint (char *);
157 static int hw_breakpoint_used_count (void);
159 static int hw_watchpoint_used_count (enum bptype
, int *);
161 static void hbreak_command (char *, int);
163 static void thbreak_command (char *, int);
165 static void watch_command_1 (char *, int, int);
167 static void rwatch_command (char *, int);
169 static void awatch_command (char *, int);
171 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
173 static void solib_load_unload_1 (char *hookname
,
176 char *cond_string
, enum bptype bp_kind
);
178 static void create_fork_vfork_event_catchpoint (int tempflag
,
180 enum bptype bp_kind
);
182 static void break_at_finish_at_depth_command_1 (char *arg
,
183 int flag
, int from_tty
);
185 static void break_at_finish_command_1 (char *arg
, int flag
, int from_tty
);
187 static void stop_command (char *arg
, int from_tty
);
189 static void stopin_command (char *arg
, int from_tty
);
191 static void stopat_command (char *arg
, int from_tty
);
193 static char *ep_find_event_name_end (char *arg
);
195 static char *ep_parse_optional_if_clause (char **arg
);
197 static char *ep_parse_optional_filename (char **arg
);
199 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
200 enum exception_event_kind ex_event
,
201 struct symtab_and_line
*sal
);
203 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
204 char *arg
, int tempflag
, int from_tty
);
206 static void tcatch_command (char *arg
, int from_tty
);
208 static void ep_skip_leading_whitespace (char **s
);
210 /* Prototypes for exported functions. */
212 /* If FALSE, gdb will not use hardware support for watchpoints, even
213 if such is available. */
214 static int can_use_hw_watchpoints
;
216 /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
217 If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
218 for unrecognized breakpoint locations.
219 If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
220 static enum auto_boolean pending_break_support
;
222 void _initialize_breakpoint (void);
224 extern int addressprint
; /* Print machine addresses? */
226 /* Are we executing breakpoint commands? */
227 static int executing_breakpoint_commands
;
229 /* Are overlay event breakpoints enabled? */
230 static int overlay_events_enabled
;
232 /* Walk the following statement or block through all breakpoints.
233 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
236 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
238 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
239 for (B = breakpoint_chain; \
240 B ? (TMP=B->next, 1): 0; \
243 /* Similar iterators for the low-level breakpoints. */
245 #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next)
247 #define ALL_BP_LOCATIONS_SAFE(B,TMP) \
248 for (B = bp_location_chain; \
249 B ? (TMP=B->next, 1): 0; \
252 /* True if breakpoint hit counts should be displayed in breakpoint info. */
254 int show_breakpoint_hit_counts
= 1;
256 /* Chains of all breakpoints defined. */
258 struct breakpoint
*breakpoint_chain
;
260 struct bp_location
*bp_location_chain
;
262 /* Number of last breakpoint made. */
264 int breakpoint_count
;
266 /* Pointer to current exception event record */
267 static struct exception_event_record
*current_exception_event
;
269 /* Indicator of whether exception catchpoints should be nuked between
270 runs of a program. */
271 int deprecated_exception_catchpoints_are_fragile
= 0;
273 /* Indicator of when exception catchpoints set-up should be
274 reinitialized -- e.g. when program is re-run. */
275 int deprecated_exception_support_initialized
= 0;
277 /* This function returns a pointer to the string representation of the
278 pathname of the dynamically-linked library that has just been
281 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
282 or undefined results are guaranteed.
284 This string's contents are only valid immediately after the
285 inferior has stopped in the dynamic linker hook, and becomes
286 invalid as soon as the inferior is continued. Clients should make
287 a copy of this string if they wish to continue the inferior and
288 then access the string. */
290 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
291 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
294 /* This function returns a pointer to the string representation of the
295 pathname of the dynamically-linked library that has just been
298 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
299 TRUE, or undefined results are guaranteed.
301 This string's contents are only valid immediately after the
302 inferior has stopped in the dynamic linker hook, and becomes
303 invalid as soon as the inferior is continued. Clients should make
304 a copy of this string if they wish to continue the inferior and
305 then access the string. */
307 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
308 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
311 /* This function is called by the "catch load" command. It allows the
312 debugger to be notified by the dynamic linker when a specified
313 library file (or any library file, if filename is NULL) is loaded. */
315 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
316 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
317 error ("catch of library loads not yet implemented on this platform")
320 /* This function is called by the "catch unload" command. It allows
321 the debugger to be notified by the dynamic linker when a specified
322 library file (or any library file, if filename is NULL) is
325 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
326 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
327 error ("catch of library unloads not yet implemented on this platform")
330 /* Return whether a breakpoint is an active enabled breakpoint. */
332 breakpoint_enabled (struct breakpoint
*b
)
334 return (b
->enable_state
== bp_enabled
&& !b
->pending
);
337 /* Set breakpoint count to NUM. */
340 set_breakpoint_count (int num
)
342 breakpoint_count
= num
;
343 set_internalvar (lookup_internalvar ("bpnum"),
344 value_from_longest (builtin_type_int
, (LONGEST
) num
));
347 /* Used in run_command to zero the hit count when a new run starts. */
350 clear_breakpoint_hit_counts (void)
352 struct breakpoint
*b
;
358 /* Default address, symtab and line to put a breakpoint at
359 for "break" command with no arg.
360 if default_breakpoint_valid is zero, the other three are
361 not valid, and "break" with no arg is an error.
363 This set by print_stack_frame, which calls set_default_breakpoint. */
365 int default_breakpoint_valid
;
366 CORE_ADDR default_breakpoint_address
;
367 struct symtab
*default_breakpoint_symtab
;
368 int default_breakpoint_line
;
370 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
371 Advance *PP after the string and any trailing whitespace.
373 Currently the string can either be a number or "$" followed by the name
374 of a convenience variable. Making it an expression wouldn't work well
375 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
377 TRAILER is a character which can be found after the number; most
378 commonly this is `-'. If you don't want a trailer, use \0. */
380 get_number_trailer (char **pp
, int trailer
)
382 int retval
= 0; /* default */
386 /* Empty line means refer to the last breakpoint. */
387 return breakpoint_count
;
390 /* Make a copy of the name, so we can null-terminate it
391 to pass to lookup_internalvar(). */
396 while (isalnum (*p
) || *p
== '_')
398 varname
= (char *) alloca (p
- start
+ 1);
399 strncpy (varname
, start
, p
- start
);
400 varname
[p
- start
] = '\0';
401 val
= value_of_internalvar (lookup_internalvar (varname
));
402 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_INT
)
403 retval
= (int) value_as_long (val
);
406 printf_filtered ("Convenience variable must have integer value.\n");
414 while (*p
>= '0' && *p
<= '9')
417 /* There is no number here. (e.g. "cond a == b"). */
419 /* Skip non-numeric token */
420 while (*p
&& !isspace((int) *p
))
422 /* Return zero, which caller must interpret as error. */
428 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
430 /* Trailing junk: return 0 and let caller print error msg. */
431 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
442 /* Like get_number_trailer, but don't allow a trailer. */
444 get_number (char **pp
)
446 return get_number_trailer (pp
, '\0');
449 /* Parse a number or a range.
450 * A number will be of the form handled by get_number.
451 * A range will be of the form <number1> - <number2>, and
452 * will represent all the integers between number1 and number2,
455 * While processing a range, this fuction is called iteratively;
456 * At each call it will return the next value in the range.
458 * At the beginning of parsing a range, the char pointer PP will
459 * be advanced past <number1> and left pointing at the '-' token.
460 * Subsequent calls will not advance the pointer until the range
461 * is completed. The call that completes the range will advance
462 * pointer PP past <number2>.
466 get_number_or_range (char **pp
)
468 static int last_retval
, end_value
;
469 static char *end_ptr
;
470 static int in_range
= 0;
474 /* Default case: pp is pointing either to a solo number,
475 or to the first number of a range. */
476 last_retval
= get_number_trailer (pp
, '-');
481 /* This is the start of a range (<number1> - <number2>).
482 Skip the '-', parse and remember the second number,
483 and also remember the end of the final token. */
487 while (isspace ((int) *end_ptr
))
488 end_ptr
++; /* skip white space */
489 end_value
= get_number (temp
);
490 if (end_value
< last_retval
)
492 error ("inverted range");
494 else if (end_value
== last_retval
)
496 /* degenerate range (number1 == number2). Advance the
497 token pointer so that the range will be treated as a
506 error ("negative value");
509 /* pp points to the '-' that betokens a range. All
510 number-parsing has already been done. Return the next
511 integer value (one greater than the saved previous value).
512 Do not advance the token pointer 'pp' until the end of range
515 if (++last_retval
== end_value
)
517 /* End of range reached; advance token pointer. */
527 /* condition N EXP -- set break condition of breakpoint N to EXP. */
530 condition_command (char *arg
, int from_tty
)
532 struct breakpoint
*b
;
537 error_no_arg ("breakpoint number");
540 bnum
= get_number (&p
);
542 error ("Bad breakpoint argument: '%s'", arg
);
545 if (b
->number
== bnum
)
552 if (b
->cond_string
!= NULL
)
553 xfree (b
->cond_string
);
558 b
->cond_string
= NULL
;
560 printf_filtered ("Breakpoint %d now unconditional.\n", bnum
);
565 /* I don't know if it matters whether this is the string the user
566 typed in or the decompiled expression. */
567 b
->cond_string
= savestring (arg
, strlen (arg
));
570 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->loc
->address
), 0);
572 error ("Junk at end of expression");
575 breakpoints_changed ();
576 breakpoint_modify_event (b
->number
);
580 error ("No breakpoint number %d.", bnum
);
584 commands_command (char *arg
, int from_tty
)
586 struct breakpoint
*b
;
589 struct command_line
*l
;
591 /* If we allowed this, we would have problems with when to
592 free the storage, if we change the commands currently
595 if (executing_breakpoint_commands
)
596 error ("Can't use the \"commands\" command among a breakpoint's commands.");
599 bnum
= get_number (&p
);
602 error ("Unexpected extra arguments following breakpoint number.");
605 if (b
->number
== bnum
)
607 char *tmpbuf
= xstrprintf ("Type commands for when breakpoint %d is hit, one per line.",
609 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
610 l
= read_command_lines (tmpbuf
, from_tty
);
611 do_cleanups (cleanups
);
612 free_command_lines (&b
->commands
);
614 breakpoints_changed ();
615 breakpoint_modify_event (b
->number
);
618 error ("No breakpoint number %d.", bnum
);
621 /* Like target_read_memory() but if breakpoints are inserted, return
622 the shadow contents instead of the breakpoints themselves.
624 Read "memory data" from whatever target or inferior we have.
625 Returns zero if successful, errno value if not. EIO is used
626 for address out of bounds. If breakpoints are inserted, returns
627 shadow contents, not the breakpoints themselves. From breakpoint.c. */
630 read_memory_nobpt (CORE_ADDR memaddr
, char *myaddr
, unsigned len
)
633 struct bp_location
*b
;
634 CORE_ADDR bp_addr
= 0;
637 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
638 /* No breakpoints on this machine. */
639 return target_read_memory (memaddr
, myaddr
, len
);
643 if (b
->owner
->type
== bp_none
)
644 warning ("reading through apparently deleted breakpoint #%d?",
647 if (b
->loc_type
!= bp_loc_software_breakpoint
)
651 /* Addresses and length of the part of the breakpoint that
653 /* XXXX The m68k, sh and h8300 have different local and remote
654 breakpoint values. BREAKPOINT_FROM_PC still manages to
655 correctly determine the breakpoints memory address and size
656 for these targets. */
657 bp_addr
= b
->address
;
659 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
664 if (bp_addr
+ bp_size
<= memaddr
)
665 /* The breakpoint is entirely before the chunk of memory we
668 if (bp_addr
>= memaddr
+ len
)
669 /* The breakpoint is entirely after the chunk of memory we are
672 /* Copy the breakpoint from the shadow contents, and recurse for
673 the things before and after. */
675 /* Offset within shadow_contents. */
678 if (bp_addr
< memaddr
)
680 /* Only copy the second part of the breakpoint. */
681 bp_size
-= memaddr
- bp_addr
;
682 bptoffset
= memaddr
- bp_addr
;
686 if (bp_addr
+ bp_size
> memaddr
+ len
)
688 /* Only copy the first part of the breakpoint. */
689 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
692 memcpy (myaddr
+ bp_addr
- memaddr
,
693 b
->shadow_contents
+ bptoffset
, bp_size
);
695 if (bp_addr
> memaddr
)
697 /* Copy the section of memory before the breakpoint. */
698 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
703 if (bp_addr
+ bp_size
< memaddr
+ len
)
705 /* Copy the section of memory after the breakpoint. */
706 status
= read_memory_nobpt (bp_addr
+ bp_size
,
707 myaddr
+ bp_addr
+ bp_size
- memaddr
,
708 memaddr
+ len
- (bp_addr
+ bp_size
));
715 /* Nothing overlaps. Just call read_memory_noerr. */
716 return target_read_memory (memaddr
, myaddr
, len
);
720 /* A wrapper function for inserting catchpoints. */
722 insert_catchpoint (struct ui_out
*uo
, void *args
)
724 struct breakpoint
*b
= (struct breakpoint
*) args
;
730 val
= target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
733 val
= target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
736 val
= target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
739 internal_error (__FILE__
, __LINE__
, "unknown breakpoint type");
744 throw_exception (RETURN_ERROR
);
749 /* Helper routine: free the value chain for a breakpoint (watchpoint). */
751 static void free_valchain (struct bp_location
*b
)
756 /* Free the saved value chain. We will construct a new one
757 the next time the watchpoint is inserted. */
758 for (v
= b
->owner
->val_chain
; v
; v
= n
)
763 b
->owner
->val_chain
= NULL
;
766 /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
767 Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
768 PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems.
770 NOTE drow/2003-09-09: This routine could be broken down to an object-style
771 method for each breakpoint or catchpoint type. */
773 insert_bp_location (struct bp_location
*bpt
,
774 struct ui_file
*tmp_error_stream
,
775 int *disabled_breaks
, int *process_warning
,
776 int *hw_breakpoint_error
)
780 /* Permanent breakpoints cannot be inserted or removed. Disabled
781 breakpoints should not be inserted. */
782 if (!breakpoint_enabled (bpt
->owner
))
785 if (bpt
->inserted
|| bpt
->duplicate
)
788 if (bpt
->loc_type
== bp_loc_software_breakpoint
789 || bpt
->loc_type
== bp_loc_hardware_breakpoint
)
791 /* First check to see if we have to handle an overlay. */
792 if (overlay_debugging
== ovly_off
793 || bpt
->section
== NULL
794 || !(section_is_overlay (bpt
->section
)))
796 /* No overlay handling: just set the breakpoint. */
798 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
799 val
= target_insert_hw_breakpoint (bpt
->address
,
800 bpt
->shadow_contents
);
802 val
= target_insert_breakpoint (bpt
->address
,
803 bpt
->shadow_contents
);
807 /* This breakpoint is in an overlay section.
808 Shall we set a breakpoint at the LMA? */
809 if (!overlay_events_enabled
)
811 /* Yes -- overlay event support is not active,
812 so we must try to set a breakpoint at the LMA.
813 This will not work for a hardware breakpoint. */
814 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
815 warning ("hardware breakpoint %d not supported in overlay!\n",
819 CORE_ADDR addr
= overlay_unmapped_address (bpt
->address
,
821 /* Set a software (trap) breakpoint at the LMA. */
822 val
= target_insert_breakpoint (addr
, bpt
->shadow_contents
);
824 fprintf_unfiltered (tmp_error_stream
,
825 "Overlay breakpoint %d failed: in ROM?",
829 /* Shall we set a breakpoint at the VMA? */
830 if (section_is_mapped (bpt
->section
))
832 /* Yes. This overlay section is mapped into memory. */
833 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
834 val
= target_insert_hw_breakpoint (bpt
->address
,
835 bpt
->shadow_contents
);
837 val
= target_insert_breakpoint (bpt
->address
,
838 bpt
->shadow_contents
);
842 /* No. This breakpoint will not be inserted.
843 No error, but do not mark the bp as 'inserted'. */
850 /* Can't set the breakpoint. */
851 #if defined (DISABLE_UNSETTABLE_BREAK)
852 if (DISABLE_UNSETTABLE_BREAK (bpt
->address
))
854 /* See also: disable_breakpoints_in_shlibs. */
856 bpt
->owner
->enable_state
= bp_shlib_disabled
;
857 if (!*disabled_breaks
)
859 fprintf_unfiltered (tmp_error_stream
,
860 "Cannot insert breakpoint %d.\n",
862 fprintf_unfiltered (tmp_error_stream
,
863 "Temporarily disabling shared library breakpoints:\n");
865 *disabled_breaks
= 1;
866 fprintf_unfiltered (tmp_error_stream
,
867 "breakpoint #%d\n", bpt
->owner
->number
);
872 #ifdef ONE_PROCESS_WRITETEXT
873 *process_warning
= 1;
875 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
877 *hw_breakpoint_error
= 1;
878 fprintf_unfiltered (tmp_error_stream
,
879 "Cannot insert hardware breakpoint %d.\n",
884 fprintf_unfiltered (tmp_error_stream
,
885 "Cannot insert breakpoint %d.\n",
887 fprintf_filtered (tmp_error_stream
,
888 "Error accessing memory address ");
889 print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
890 fprintf_filtered (tmp_error_stream
, ": %s.\n",
891 safe_strerror (val
));
902 else if (bpt
->loc_type
== bp_loc_hardware_watchpoint
903 /* NOTE drow/2003-09-08: This state only exists for removing
904 watchpoints. It's not clear that it's necessary... */
905 && bpt
->owner
->disposition
!= disp_del_at_next_stop
)
907 /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints
908 based on the expression. Ideally this should happen at a higher level,
909 and there should be one bp_location for each computed address we
910 must watch. As soon as a many-to-one mapping is available I'll
913 int within_current_scope
;
914 struct value
*mark
= value_mark ();
916 struct frame_id saved_frame_id
;
918 /* Save the current frame's ID so we can restore it after
919 evaluating the watchpoint expression on its own frame. */
920 /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
921 took a frame parameter, so that we didn't have to change the
923 saved_frame_id
= get_frame_id (deprecated_selected_frame
);
925 /* Determine if the watchpoint is within scope. */
926 if (bpt
->owner
->exp_valid_block
== NULL
)
927 within_current_scope
= 1;
930 struct frame_info
*fi
;
931 fi
= frame_find_by_id (bpt
->owner
->watchpoint_frame
);
932 within_current_scope
= (fi
!= NULL
);
933 if (within_current_scope
)
937 if (within_current_scope
)
941 /* Evaluate the expression and cut the chain of values
942 produced off from the value chain.
944 Make sure the value returned isn't lazy; we use
945 laziness to determine what memory GDB actually needed
946 in order to compute the value of the expression. */
947 v
= evaluate_expression (bpt
->owner
->exp
);
949 value_release_to_mark (mark
);
951 bpt
->owner
->val_chain
= v
;
954 /* Look at each value on the value chain. */
955 for (; v
; v
= v
->next
)
957 /* If it's a memory location, and GDB actually needed
958 its contents to evaluate the expression, then we
960 if (VALUE_LVAL (v
) == lval_memory
963 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
965 /* We only watch structs and arrays if user asked
966 for it explicitly, never if they just happen to
967 appear in the middle of some value chain. */
968 if (v
== bpt
->owner
->val_chain
969 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
970 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
975 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
976 len
= TYPE_LENGTH (VALUE_TYPE (v
));
978 if (bpt
->owner
->type
== bp_read_watchpoint
)
980 else if (bpt
->owner
->type
== bp_access_watchpoint
)
983 val
= target_insert_watchpoint (addr
, len
, type
);
986 /* Don't exit the loop, try to insert
987 every value on the value chain. That's
988 because we will be removing all the
989 watches below, and removing a
990 watchpoint we didn't insert could have
998 /* Failure to insert a watchpoint on any memory value in the
999 value chain brings us here. */
1002 remove_breakpoint (bpt
, mark_uninserted
);
1003 *hw_breakpoint_error
= 1;
1004 fprintf_unfiltered (tmp_error_stream
,
1005 "Could not insert hardware watchpoint %d.\n",
1006 bpt
->owner
->number
);
1012 printf_filtered ("Hardware watchpoint %d deleted ", bpt
->owner
->number
);
1013 printf_filtered ("because the program has left the block \n");
1014 printf_filtered ("in which its expression is valid.\n");
1015 if (bpt
->owner
->related_breakpoint
)
1016 bpt
->owner
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
1017 bpt
->owner
->disposition
= disp_del_at_next_stop
;
1020 /* Restore the selected frame. */
1021 select_frame (frame_find_by_id (saved_frame_id
));
1026 else if (ep_is_exception_catchpoint (bpt
->owner
))
1028 /* FIXME drow/2003-09-09: This code sets both a catchpoint and a
1029 breakpoint. Once again, it would be better if this was represented
1030 as two bp_locations. */
1032 /* If we get here, we must have a callback mechanism for exception
1033 events -- with g++ style embedded label support, we insert
1034 ordinary breakpoints and not catchpoints. */
1035 val
= target_insert_breakpoint (bpt
->address
, bpt
->shadow_contents
);
1038 /* Couldn't set breakpoint for some reason */
1039 fprintf_unfiltered (tmp_error_stream
,
1040 "Cannot insert catchpoint %d; disabling it.\n",
1041 bpt
->owner
->number
);
1042 fprintf_filtered (tmp_error_stream
,
1043 "Error accessing memory address ");
1044 print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
1045 fprintf_filtered (tmp_error_stream
, ": %s.\n",
1046 safe_strerror (val
));
1047 bpt
->owner
->enable_state
= bp_disabled
;
1051 /* Bp set, now make sure callbacks are enabled */
1052 /* Format possible error msg */
1053 char *message
= xstrprintf ("Error inserting catchpoint %d:\n",
1054 bpt
->owner
->number
);
1055 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
1057 args_for_catchpoint_enable args
;
1058 args
.kind
= bpt
->owner
->type
== bp_catch_catch
?
1059 EX_EVENT_CATCH
: EX_EVENT_THROW
;
1061 val
= catch_errors (cover_target_enable_exception_callback
,
1062 &args
, message
, RETURN_MASK_ALL
);
1063 do_cleanups (cleanups
);
1064 if (val
!= 0 && val
!= -1)
1067 /* Check if something went wrong; val == 0 can be ignored */
1070 /* something went wrong */
1071 fprintf_unfiltered (tmp_error_stream
,
1072 "Cannot insert catchpoint %d; disabling it.\n",
1073 bpt
->owner
->number
);
1074 bpt
->owner
->enable_state
= bp_disabled
;
1081 else if (bpt
->owner
->type
== bp_catch_fork
1082 || bpt
->owner
->type
== bp_catch_vfork
1083 || bpt
->owner
->type
== bp_catch_exec
)
1085 char *prefix
= xstrprintf ("warning: inserting catchpoint %d: ",
1086 bpt
->owner
->number
);
1087 struct cleanup
*cleanups
= make_cleanup (xfree
, prefix
);
1088 val
= catch_exceptions (uiout
, insert_catchpoint
, bpt
->owner
, prefix
,
1090 do_cleanups (cleanups
);
1092 bpt
->owner
->enable_state
= bp_disabled
;
1096 /* We've already printed an error message if there was a problem
1097 inserting this catchpoint, and we've disabled the catchpoint,
1098 so just return success. */
1105 /* insert_breakpoints is used when starting or continuing the program.
1106 remove_breakpoints is used when the program stops.
1107 Both return zero if successful,
1108 or an `errno' value if could not write the inferior. */
1111 insert_breakpoints (void)
1113 struct bp_location
*b
, *temp
;
1114 int return_val
= 0; /* return success code. */
1116 int disabled_breaks
= 0;
1117 int hw_breakpoint_error
= 0;
1118 int process_warning
= 0;
1120 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1121 make_cleanup_ui_file_delete (tmp_error_stream
);
1123 /* Explicitly mark the warning -- this will only be printed if
1124 there was an error. */
1125 fprintf_unfiltered (tmp_error_stream
, "Warning:\n");
1127 ALL_BP_LOCATIONS_SAFE (b
, temp
)
1129 /* Permanent breakpoints cannot be inserted or removed. Disabled
1130 breakpoints should not be inserted. */
1131 if (!breakpoint_enabled (b
->owner
))
1134 /* FIXME drow/2003-10-07: This code should be pushed elsewhere when
1135 hardware watchpoints are split into multiple loc breakpoints. */
1136 if ((b
->loc_type
== bp_loc_hardware_watchpoint
1137 || b
->owner
->type
== bp_watchpoint
) && !b
->owner
->val
)
1140 val
= evaluate_expression (b
->owner
->exp
);
1141 release_value (val
);
1142 if (VALUE_LAZY (val
))
1143 value_fetch_lazy (val
);
1144 b
->owner
->val
= val
;
1147 val
= insert_bp_location (b
, tmp_error_stream
,
1148 &disabled_breaks
, &process_warning
,
1149 &hw_breakpoint_error
);
1156 /* If a hardware breakpoint or watchpoint was inserted, add a
1157 message about possibly exhausted resources. */
1158 if (hw_breakpoint_error
)
1160 fprintf_unfiltered (tmp_error_stream
,
1161 "Could not insert hardware breakpoints:\n\
1162 You may have requested too many hardware breakpoints/watchpoints.\n");
1164 #ifdef ONE_PROCESS_WRITETEXT
1165 if (process_warning
)
1166 fprintf_unfiltered (tmp_error_stream
,
1167 "The same program may be running in another process.");
1169 target_terminal_ours_for_output ();
1170 error_stream (tmp_error_stream
);
1176 remove_breakpoints (void)
1178 struct bp_location
*b
;
1181 ALL_BP_LOCATIONS (b
)
1185 val
= remove_breakpoint (b
, mark_uninserted
);
1194 remove_hw_watchpoints (void)
1196 struct bp_location
*b
;
1199 ALL_BP_LOCATIONS (b
)
1201 if (b
->inserted
&& b
->loc_type
== bp_loc_hardware_watchpoint
)
1203 val
= remove_breakpoint (b
, mark_uninserted
);
1212 reattach_breakpoints (int pid
)
1214 struct bp_location
*b
;
1216 struct cleanup
*old_chain
= save_inferior_ptid ();
1218 /* Set inferior_ptid; remove_breakpoint uses this global. */
1219 inferior_ptid
= pid_to_ptid (pid
);
1220 ALL_BP_LOCATIONS (b
)
1224 remove_breakpoint (b
, mark_inserted
);
1225 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1226 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
1228 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
1229 /* FIXME drow/2003-10-07: This doesn't handle any other kinds of
1230 breakpoints. It's wrong for watchpoints, for example. */
1233 do_cleanups (old_chain
);
1238 do_cleanups (old_chain
);
1243 update_breakpoints_after_exec (void)
1245 struct breakpoint
*b
;
1246 struct breakpoint
*temp
;
1248 /* Doing this first prevents the badness of having delete_breakpoint()
1249 write a breakpoint's current "shadow contents" to lift the bp. That
1250 shadow is NOT valid after an exec()! */
1251 mark_breakpoints_out ();
1253 ALL_BREAKPOINTS_SAFE (b
, temp
)
1255 /* Solib breakpoints must be explicitly reset after an exec(). */
1256 if (b
->type
== bp_shlib_event
)
1258 delete_breakpoint (b
);
1262 /* Thread event breakpoints must be set anew after an exec(),
1263 as must overlay event breakpoints. */
1264 if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
1266 delete_breakpoint (b
);
1270 /* Step-resume breakpoints are meaningless after an exec(). */
1271 if (b
->type
== bp_step_resume
)
1273 delete_breakpoint (b
);
1277 /* Ditto the sigtramp handler breakpoints. */
1278 if (b
->type
== bp_through_sigtramp
)
1280 delete_breakpoint (b
);
1284 /* Ditto the exception-handling catchpoints. */
1285 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1287 delete_breakpoint (b
);
1291 /* Don't delete an exec catchpoint, because else the inferior
1292 won't stop when it ought!
1294 Similarly, we probably ought to keep vfork catchpoints, 'cause
1295 on this target, we may not be able to stop when the vfork is
1296 seen, but only when the subsequent exec is seen. (And because
1297 deleting fork catchpoints here but not vfork catchpoints will
1298 seem mysterious to users, keep those too.)
1300 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1301 target address field, if any, is sufficient to have it be reset
1302 automagically. Certainly on HP-UX that's true.
1304 Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly
1305 valid code address on some platforms (like the mn10300
1306 simulators). We shouldn't assign any special interpretation to
1307 a breakpoint with a zero address. And in fact, GDB doesn't ---
1308 I can't see what that comment above is talking about. As far
1309 as I can tell, setting the address of a
1310 bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero
1311 is meaningless, since those are implemented with HP-UX kernel
1312 hackery, not by storing breakpoint instructions somewhere. */
1313 if ((b
->type
== bp_catch_exec
) ||
1314 (b
->type
== bp_catch_vfork
) ||
1315 (b
->type
== bp_catch_fork
))
1317 b
->loc
->address
= (CORE_ADDR
) NULL
;
1321 /* bp_finish is a special case. The only way we ought to be able
1322 to see one of these when an exec() has happened, is if the user
1323 caught a vfork, and then said "finish". Ordinarily a finish just
1324 carries them to the call-site of the current callee, by setting
1325 a temporary bp there and resuming. But in this case, the finish
1326 will carry them entirely through the vfork & exec.
1328 We don't want to allow a bp_finish to remain inserted now. But
1329 we can't safely delete it, 'cause finish_command has a handle to
1330 the bp on a bpstat, and will later want to delete it. There's a
1331 chance (and I've seen it happen) that if we delete the bp_finish
1332 here, that its storage will get reused by the time finish_command
1333 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1334 We really must allow finish_command to delete a bp_finish.
1336 In the absense of a general solution for the "how do we know
1337 it's safe to delete something others may have handles to?"
1338 problem, what we'll do here is just uninsert the bp_finish, and
1339 let finish_command delete it.
1341 (We know the bp_finish is "doomed" in the sense that it's
1342 momentary, and will be deleted as soon as finish_command sees
1343 the inferior stopped. So it doesn't matter that the bp's
1344 address is probably bogus in the new a.out, unlike e.g., the
1345 solib breakpoints.) */
1347 if (b
->type
== bp_finish
)
1352 /* Without a symbolic address, we have little hope of the
1353 pre-exec() address meaning the same thing in the post-exec()
1355 if (b
->addr_string
== NULL
)
1357 delete_breakpoint (b
);
1361 /* If this breakpoint has survived the above battery of checks, then
1362 it must have a symbolic address. Be sure that it gets reevaluated
1363 to a target address, rather than reusing the old evaluation.
1365 Jim Blandy <jimb@redhat.com>: As explained above in the comment
1366 for bp_catch_exec and friends, I'm pretty sure this is entirely
1367 unnecessary. A call to breakpoint_re_set_one always recomputes
1368 the breakpoint's address from scratch, or deletes it if it can't.
1369 So I think this assignment could be deleted without effect. */
1370 b
->loc
->address
= (CORE_ADDR
) NULL
;
1372 /* FIXME what about longjmp breakpoints? Re-create them here? */
1373 create_overlay_event_breakpoint ("_ovly_debug_event");
1377 detach_breakpoints (int pid
)
1379 struct bp_location
*b
;
1381 struct cleanup
*old_chain
= save_inferior_ptid ();
1383 if (pid
== PIDGET (inferior_ptid
))
1384 error ("Cannot detach breakpoints of inferior_ptid");
1386 /* Set inferior_ptid; remove_breakpoint uses this global. */
1387 inferior_ptid
= pid_to_ptid (pid
);
1388 ALL_BP_LOCATIONS (b
)
1392 val
= remove_breakpoint (b
, mark_inserted
);
1395 do_cleanups (old_chain
);
1400 do_cleanups (old_chain
);
1405 remove_breakpoint (struct bp_location
*b
, insertion_state_t is
)
1409 if (b
->owner
->enable_state
== bp_permanent
)
1410 /* Permanent breakpoints cannot be inserted or removed. */
1413 if (b
->owner
->type
== bp_none
)
1414 warning ("attempted to remove apparently deleted breakpoint #%d?",
1417 if (b
->loc_type
== bp_loc_software_breakpoint
1418 || b
->loc_type
== bp_loc_hardware_breakpoint
)
1420 /* "Normal" instruction breakpoint: either the standard
1421 trap-instruction bp (bp_breakpoint), or a
1422 bp_hardware_breakpoint. */
1424 /* First check to see if we have to handle an overlay. */
1425 if (overlay_debugging
== ovly_off
1426 || b
->section
== NULL
1427 || !(section_is_overlay (b
->section
)))
1429 /* No overlay handling: just remove the breakpoint. */
1431 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1432 val
= target_remove_hw_breakpoint (b
->address
,
1433 b
->shadow_contents
);
1435 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1439 /* This breakpoint is in an overlay section.
1440 Did we set a breakpoint at the LMA? */
1441 if (!overlay_events_enabled
)
1443 /* Yes -- overlay event support is not active, so we
1444 should have set a breakpoint at the LMA. Remove it.
1446 CORE_ADDR addr
= overlay_unmapped_address (b
->address
,
1448 /* Ignore any failures: if the LMA is in ROM, we will
1449 have already warned when we failed to insert it. */
1450 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1451 target_remove_hw_breakpoint (addr
, b
->shadow_contents
);
1453 target_remove_breakpoint (addr
, b
->shadow_contents
);
1455 /* Did we set a breakpoint at the VMA?
1456 If so, we will have marked the breakpoint 'inserted'. */
1459 /* Yes -- remove it. Previously we did not bother to
1460 remove the breakpoint if the section had been
1461 unmapped, but let's not rely on that being safe. We
1462 don't know what the overlay manager might do. */
1463 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1464 val
= target_remove_hw_breakpoint (b
->address
,
1465 b
->shadow_contents
);
1467 val
= target_remove_breakpoint (b
->address
,
1468 b
->shadow_contents
);
1472 /* No -- not inserted, so no need to remove. No error. */
1478 b
->inserted
= (is
== mark_inserted
);
1480 else if (b
->loc_type
== bp_loc_hardware_watchpoint
1481 && breakpoint_enabled (b
->owner
)
1487 b
->inserted
= (is
== mark_inserted
);
1488 /* Walk down the saved value chain. */
1489 for (v
= b
->owner
->val_chain
; v
; v
= v
->next
)
1491 /* For each memory reference remove the watchpoint
1493 if (VALUE_LVAL (v
) == lval_memory
1494 && ! VALUE_LAZY (v
))
1496 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
1498 if (v
== b
->owner
->val_chain
1499 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1500 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1505 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
1506 len
= TYPE_LENGTH (VALUE_TYPE (v
));
1508 if (b
->owner
->type
== bp_read_watchpoint
)
1510 else if (b
->owner
->type
== bp_access_watchpoint
)
1513 val
= target_remove_watchpoint (addr
, len
, type
);
1520 /* Failure to remove any of the hardware watchpoints comes here. */
1521 if ((is
== mark_uninserted
) && (b
->inserted
))
1522 warning ("Could not remove hardware watchpoint %d.",
1525 else if ((b
->owner
->type
== bp_catch_fork
||
1526 b
->owner
->type
== bp_catch_vfork
||
1527 b
->owner
->type
== bp_catch_exec
)
1528 && breakpoint_enabled (b
->owner
)
1532 switch (b
->owner
->type
)
1535 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1537 case bp_catch_vfork
:
1538 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1541 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1544 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1549 b
->inserted
= (is
== mark_inserted
);
1551 else if ((b
->owner
->type
== bp_catch_catch
||
1552 b
->owner
->type
== bp_catch_throw
)
1553 && breakpoint_enabled (b
->owner
)
1557 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1560 b
->inserted
= (is
== mark_inserted
);
1562 else if (ep_is_exception_catchpoint (b
->owner
)
1563 && b
->inserted
/* sometimes previous insert doesn't happen */
1564 && breakpoint_enabled (b
->owner
)
1568 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1572 b
->inserted
= (is
== mark_inserted
);
1578 /* Clear the "inserted" flag in all breakpoints. */
1581 mark_breakpoints_out (void)
1583 struct bp_location
*bpt
;
1585 ALL_BP_LOCATIONS (bpt
)
1589 /* Clear the "inserted" flag in all breakpoints and delete any
1590 breakpoints which should go away between runs of the program.
1592 Plus other such housekeeping that has to be done for breakpoints
1595 Note: this function gets called at the end of a run (by
1596 generic_mourn_inferior) and when a run begins (by
1597 init_wait_for_inferior). */
1602 breakpoint_init_inferior (enum inf_context context
)
1604 struct breakpoint
*b
, *temp
;
1605 struct bp_location
*bpt
;
1606 static int warning_needed
= 0;
1608 ALL_BP_LOCATIONS (bpt
)
1611 ALL_BREAKPOINTS_SAFE (b
, temp
)
1616 case bp_watchpoint_scope
:
1618 /* If the call dummy breakpoint is at the entry point it will
1619 cause problems when the inferior is rerun, so we better
1622 Also get rid of scope breakpoints. */
1623 delete_breakpoint (b
);
1627 case bp_hardware_watchpoint
:
1628 case bp_read_watchpoint
:
1629 case bp_access_watchpoint
:
1631 /* Likewise for watchpoints on local expressions. */
1632 if (b
->exp_valid_block
!= NULL
)
1633 delete_breakpoint (b
);
1634 if (context
== inf_starting
)
1636 /* Reset val field to force reread of starting value
1637 in insert_breakpoints. */
1639 value_free (b
->val
);
1644 /* Likewise for exception catchpoints in dynamic-linked
1645 executables where required */
1646 if (ep_is_exception_catchpoint (b
)
1647 && deprecated_exception_catchpoints_are_fragile
)
1650 delete_breakpoint (b
);
1656 if (deprecated_exception_catchpoints_are_fragile
)
1657 deprecated_exception_support_initialized
= 0;
1659 /* Don't issue the warning unless it's really needed... */
1660 if (warning_needed
&& (context
!= inf_exited
))
1662 warning ("Exception catchpoints from last run were deleted.");
1663 warning ("You must reinsert them explicitly.");
1668 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1669 exists at PC. It returns ordinary_breakpoint_here if it's an
1670 ordinary breakpoint, or permanent_breakpoint_here if it's a
1671 permanent breakpoint.
1672 - When continuing from a location with an ordinary breakpoint, we
1673 actually single step once before calling insert_breakpoints.
1674 - When continuing from a localion with a permanent breakpoint, we
1675 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1676 the target, to advance the PC past the breakpoint. */
1678 enum breakpoint_here
1679 breakpoint_here_p (CORE_ADDR pc
)
1681 struct bp_location
*bpt
;
1682 int any_breakpoint_here
= 0;
1684 ALL_BP_LOCATIONS (bpt
)
1686 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1687 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1690 if ((breakpoint_enabled (bpt
->owner
)
1691 || bpt
->owner
->enable_state
== bp_permanent
)
1692 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1694 if (overlay_debugging
1695 && section_is_overlay (bpt
->section
)
1696 && !section_is_mapped (bpt
->section
))
1697 continue; /* unmapped overlay -- can't be a match */
1698 else if (bpt
->owner
->enable_state
== bp_permanent
)
1699 return permanent_breakpoint_here
;
1701 any_breakpoint_here
= 1;
1705 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1709 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1710 but it only returns true if there is actually a breakpoint inserted
1714 breakpoint_inserted_here_p (CORE_ADDR pc
)
1716 struct bp_location
*bpt
;
1718 ALL_BP_LOCATIONS (bpt
)
1720 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1721 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1725 && bpt
->address
== pc
) /* bp is inserted and matches pc */
1727 if (overlay_debugging
1728 && section_is_overlay (bpt
->section
)
1729 && !section_is_mapped (bpt
->section
))
1730 continue; /* unmapped overlay -- can't be a match */
1739 /* This function returns non-zero iff there is a software breakpoint
1743 software_breakpoint_inserted_here_p (CORE_ADDR pc
)
1745 struct bp_location
*bpt
;
1746 int any_breakpoint_here
= 0;
1748 ALL_BP_LOCATIONS (bpt
)
1750 if (bpt
->loc_type
!= bp_loc_software_breakpoint
)
1753 if ((breakpoint_enabled (bpt
->owner
)
1754 || bpt
->owner
->enable_state
== bp_permanent
)
1756 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1758 if (overlay_debugging
1759 && section_is_overlay (bpt
->section
)
1760 && !section_is_mapped (bpt
->section
))
1761 continue; /* unmapped overlay -- can't be a match */
1770 /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
1771 PC is valid for process/thread PTID. */
1774 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1776 struct bp_location
*bpt
;
1779 thread
= pid_to_thread_id (ptid
);
1781 ALL_BP_LOCATIONS (bpt
)
1783 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1784 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1787 if ((breakpoint_enabled (bpt
->owner
)
1788 || bpt
->owner
->enable_state
== bp_permanent
)
1789 && bpt
->address
== pc
1790 && (bpt
->owner
->thread
== -1 || bpt
->owner
->thread
== thread
))
1792 if (overlay_debugging
1793 && section_is_overlay (bpt
->section
)
1794 && !section_is_mapped (bpt
->section
))
1795 continue; /* unmapped overlay -- can't be a match */
1805 /* bpstat stuff. External routines' interfaces are documented
1809 ep_is_catchpoint (struct breakpoint
*ep
)
1812 (ep
->type
== bp_catch_load
)
1813 || (ep
->type
== bp_catch_unload
)
1814 || (ep
->type
== bp_catch_fork
)
1815 || (ep
->type
== bp_catch_vfork
)
1816 || (ep
->type
== bp_catch_exec
)
1817 || (ep
->type
== bp_catch_catch
)
1818 || (ep
->type
== bp_catch_throw
);
1820 /* ??rehrauer: Add more kinds here, as are implemented... */
1824 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1827 (ep
->type
== bp_catch_load
)
1828 || (ep
->type
== bp_catch_unload
);
1832 ep_is_exception_catchpoint (struct breakpoint
*ep
)
1835 (ep
->type
== bp_catch_catch
)
1836 || (ep
->type
== bp_catch_throw
);
1839 /* Clear a bpstat so that it says we are not at any breakpoint.
1840 Also free any storage that is part of a bpstat. */
1843 bpstat_clear (bpstat
*bsp
)
1854 if (p
->old_val
!= NULL
)
1855 value_free (p
->old_val
);
1856 free_command_lines (&p
->commands
);
1863 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1864 is part of the bpstat is copied as well. */
1867 bpstat_copy (bpstat bs
)
1871 bpstat retval
= NULL
;
1876 for (; bs
!= NULL
; bs
= bs
->next
)
1878 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1879 memcpy (tmp
, bs
, sizeof (*tmp
));
1880 if (bs
->commands
!= NULL
)
1881 tmp
->commands
= copy_command_lines (bs
->commands
);
1882 if (bs
->old_val
!= NULL
)
1883 tmp
->old_val
= value_copy (bs
->old_val
);
1886 /* This is the first thing in the chain. */
1896 /* Find the bpstat associated with this breakpoint */
1899 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1904 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1906 if (bsp
->breakpoint_at
== breakpoint
)
1912 /* Find a step_resume breakpoint associated with this bpstat.
1913 (If there are multiple step_resume bp's on the list, this function
1914 will arbitrarily pick one.)
1916 It is an error to use this function if BPSTAT doesn't contain a
1917 step_resume breakpoint.
1919 See wait_for_inferior's use of this function. */
1921 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1926 error ("Internal error (bpstat_find_step_resume_breakpoint)");
1928 current_thread
= pid_to_thread_id (inferior_ptid
);
1930 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1932 if ((bsp
->breakpoint_at
!= NULL
) &&
1933 (bsp
->breakpoint_at
->type
== bp_step_resume
) &&
1934 (bsp
->breakpoint_at
->thread
== current_thread
||
1935 bsp
->breakpoint_at
->thread
== -1))
1936 return bsp
->breakpoint_at
;
1939 error ("Internal error (no step_resume breakpoint found)");
1943 /* Return the breakpoint number of the first breakpoint we are stopped
1944 at. *BSP upon return is a bpstat which points to the remaining
1945 breakpoints stopped at (but which is not guaranteed to be good for
1946 anything but further calls to bpstat_num).
1947 Return 0 if passed a bpstat which does not indicate any breakpoints. */
1950 bpstat_num (bpstat
*bsp
)
1952 struct breakpoint
*b
;
1955 return 0; /* No more breakpoint values */
1958 b
= (*bsp
)->breakpoint_at
;
1959 *bsp
= (*bsp
)->next
;
1961 return -1; /* breakpoint that's been deleted since */
1963 return b
->number
; /* We have its number */
1967 /* Modify BS so that the actions will not be performed. */
1970 bpstat_clear_actions (bpstat bs
)
1972 for (; bs
!= NULL
; bs
= bs
->next
)
1974 free_command_lines (&bs
->commands
);
1975 if (bs
->old_val
!= NULL
)
1977 value_free (bs
->old_val
);
1983 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1985 cleanup_executing_breakpoints (void *ignore
)
1987 executing_breakpoint_commands
= 0;
1990 /* Execute all the commands associated with all the breakpoints at this
1991 location. Any of these commands could cause the process to proceed
1992 beyond this point, etc. We look out for such changes by checking
1993 the global "breakpoint_proceeded" after each command. */
1996 bpstat_do_actions (bpstat
*bsp
)
1999 struct cleanup
*old_chain
;
2001 /* Avoid endless recursion if a `source' command is contained
2003 if (executing_breakpoint_commands
)
2006 executing_breakpoint_commands
= 1;
2007 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
2010 /* Note that (as of this writing), our callers all appear to
2011 be passing us the address of global stop_bpstat. And, if
2012 our calls to execute_control_command cause the inferior to
2013 proceed, that global (and hence, *bsp) will change.
2015 We must be careful to not touch *bsp unless the inferior
2016 has not proceeded. */
2018 /* This pointer will iterate over the list of bpstat's. */
2021 breakpoint_proceeded
= 0;
2022 for (; bs
!= NULL
; bs
= bs
->next
)
2024 struct command_line
*cmd
;
2025 struct cleanup
*this_cmd_tree_chain
;
2027 /* Take ownership of the BSP's command tree, if it has one.
2029 The command tree could legitimately contain commands like
2030 'step' and 'next', which call clear_proceed_status, which
2031 frees stop_bpstat's command tree. To make sure this doesn't
2032 free the tree we're executing out from under us, we need to
2033 take ownership of the tree ourselves. Since a given bpstat's
2034 commands are only executed once, we don't need to copy it; we
2035 can clear the pointer in the bpstat, and make sure we free
2036 the tree when we're done. */
2039 this_cmd_tree_chain
= make_cleanup_free_command_lines (&cmd
);
2043 execute_control_command (cmd
);
2045 if (breakpoint_proceeded
)
2051 /* We can free this command tree now. */
2052 do_cleanups (this_cmd_tree_chain
);
2054 if (breakpoint_proceeded
)
2055 /* The inferior is proceeded by the command; bomb out now.
2056 The bpstat chain has been blown away by wait_for_inferior.
2057 But since execution has stopped again, there is a new bpstat
2058 to look at, so start over. */
2061 do_cleanups (old_chain
);
2064 /* This is the normal print function for a bpstat. In the future,
2065 much of this logic could (should?) be moved to bpstat_stop_status,
2066 by having it set different print_it values.
2068 Current scheme: When we stop, bpstat_print() is called. It loops
2069 through the bpstat list of things causing this stop, calling the
2070 print_bp_stop_message function on each one. The behavior of the
2071 print_bp_stop_message function depends on the print_it field of
2072 bpstat. If such field so indicates, call this function here.
2074 Return values from this routine (ultimately used by bpstat_print()
2075 and normal_stop() to decide what to do):
2076 PRINT_NOTHING: Means we already printed all we needed to print,
2077 don't print anything else.
2078 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
2079 that something to be followed by a location.
2080 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
2081 that something to be followed by a location.
2082 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
2085 static enum print_stop_action
2086 print_it_typical (bpstat bs
)
2088 struct cleanup
*old_chain
, *ui_out_chain
;
2089 struct ui_stream
*stb
;
2090 stb
= ui_out_stream_new (uiout
);
2091 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
2092 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
2093 which has since been deleted. */
2094 if (bs
->breakpoint_at
== NULL
)
2095 return PRINT_UNKNOWN
;
2097 switch (bs
->breakpoint_at
->type
)
2100 case bp_hardware_breakpoint
:
2101 if (bs
->breakpoint_at
->loc
->address
!= bs
->breakpoint_at
->loc
->requested_address
)
2102 breakpoint_adjustment_warning (bs
->breakpoint_at
->loc
->requested_address
,
2103 bs
->breakpoint_at
->loc
->address
,
2104 bs
->breakpoint_at
->number
, 1);
2105 annotate_breakpoint (bs
->breakpoint_at
->number
);
2106 ui_out_text (uiout
, "\nBreakpoint ");
2107 if (ui_out_is_mi_like_p (uiout
))
2108 ui_out_field_string (uiout
, "reason", "breakpoint-hit");
2109 ui_out_field_int (uiout
, "bkptno", bs
->breakpoint_at
->number
);
2110 ui_out_text (uiout
, ", ");
2111 return PRINT_SRC_AND_LOC
;
2114 case bp_shlib_event
:
2115 /* Did we stop because the user set the stop_on_solib_events
2116 variable? (If so, we report this as a generic, "Stopped due
2117 to shlib event" message.) */
2118 printf_filtered ("Stopped due to shared library event\n");
2119 return PRINT_NOTHING
;
2122 case bp_thread_event
:
2123 /* Not sure how we will get here.
2124 GDB should not stop for these breakpoints. */
2125 printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n");
2126 return PRINT_NOTHING
;
2129 case bp_overlay_event
:
2130 /* By analogy with the thread event, GDB should not stop for these. */
2131 printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n");
2132 return PRINT_NOTHING
;
2136 annotate_catchpoint (bs
->breakpoint_at
->number
);
2137 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
2138 printf_filtered ("loaded");
2139 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
2140 return PRINT_SRC_AND_LOC
;
2143 case bp_catch_unload
:
2144 annotate_catchpoint (bs
->breakpoint_at
->number
);
2145 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
2146 printf_filtered ("unloaded");
2147 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
2148 return PRINT_SRC_AND_LOC
;
2152 annotate_catchpoint (bs
->breakpoint_at
->number
);
2153 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
2154 printf_filtered ("forked");
2155 printf_filtered (" process %d), ",
2156 bs
->breakpoint_at
->forked_inferior_pid
);
2157 return PRINT_SRC_AND_LOC
;
2160 case bp_catch_vfork
:
2161 annotate_catchpoint (bs
->breakpoint_at
->number
);
2162 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
2163 printf_filtered ("vforked");
2164 printf_filtered (" process %d), ",
2165 bs
->breakpoint_at
->forked_inferior_pid
);
2166 return PRINT_SRC_AND_LOC
;
2170 annotate_catchpoint (bs
->breakpoint_at
->number
);
2171 printf_filtered ("\nCatchpoint %d (exec'd %s), ",
2172 bs
->breakpoint_at
->number
,
2173 bs
->breakpoint_at
->exec_pathname
);
2174 return PRINT_SRC_AND_LOC
;
2177 case bp_catch_catch
:
2178 if (current_exception_event
&&
2179 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
2181 annotate_catchpoint (bs
->breakpoint_at
->number
);
2182 printf_filtered ("\nCatchpoint %d (exception caught), ",
2183 bs
->breakpoint_at
->number
);
2184 printf_filtered ("throw location ");
2185 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
2186 printf_filtered ("%s:%d",
2187 CURRENT_EXCEPTION_THROW_FILE
,
2188 CURRENT_EXCEPTION_THROW_LINE
);
2190 printf_filtered ("unknown");
2192 printf_filtered (", catch location ");
2193 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2194 printf_filtered ("%s:%d",
2195 CURRENT_EXCEPTION_CATCH_FILE
,
2196 CURRENT_EXCEPTION_CATCH_LINE
);
2198 printf_filtered ("unknown");
2200 printf_filtered ("\n");
2201 /* don't bother to print location frame info */
2202 return PRINT_SRC_ONLY
;
2206 /* really throw, some other bpstat will handle it */
2207 return PRINT_UNKNOWN
;
2211 case bp_catch_throw
:
2212 if (current_exception_event
&&
2213 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
2215 annotate_catchpoint (bs
->breakpoint_at
->number
);
2216 printf_filtered ("\nCatchpoint %d (exception thrown), ",
2217 bs
->breakpoint_at
->number
);
2218 printf_filtered ("throw location ");
2219 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
2220 printf_filtered ("%s:%d",
2221 CURRENT_EXCEPTION_THROW_FILE
,
2222 CURRENT_EXCEPTION_THROW_LINE
);
2224 printf_filtered ("unknown");
2226 printf_filtered (", catch location ");
2227 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2228 printf_filtered ("%s:%d",
2229 CURRENT_EXCEPTION_CATCH_FILE
,
2230 CURRENT_EXCEPTION_CATCH_LINE
);
2232 printf_filtered ("unknown");
2234 printf_filtered ("\n");
2235 /* don't bother to print location frame info */
2236 return PRINT_SRC_ONLY
;
2240 /* really catch, some other bpstat will handle it */
2241 return PRINT_UNKNOWN
;
2246 case bp_hardware_watchpoint
:
2247 if (bs
->old_val
!= NULL
)
2249 annotate_watchpoint (bs
->breakpoint_at
->number
);
2250 if (ui_out_is_mi_like_p (uiout
))
2251 ui_out_field_string (uiout
, "reason", "watchpoint-trigger");
2252 mention (bs
->breakpoint_at
);
2253 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2254 ui_out_text (uiout
, "\nOld value = ");
2255 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2256 ui_out_field_stream (uiout
, "old", stb
);
2257 ui_out_text (uiout
, "\nNew value = ");
2258 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2259 ui_out_field_stream (uiout
, "new", stb
);
2260 do_cleanups (ui_out_chain
);
2261 ui_out_text (uiout
, "\n");
2262 value_free (bs
->old_val
);
2265 /* More than one watchpoint may have been triggered. */
2266 return PRINT_UNKNOWN
;
2269 case bp_read_watchpoint
:
2270 if (ui_out_is_mi_like_p (uiout
))
2271 ui_out_field_string (uiout
, "reason", "read-watchpoint-trigger");
2272 mention (bs
->breakpoint_at
);
2273 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2274 ui_out_text (uiout
, "\nValue = ");
2275 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2276 ui_out_field_stream (uiout
, "value", stb
);
2277 do_cleanups (ui_out_chain
);
2278 ui_out_text (uiout
, "\n");
2279 return PRINT_UNKNOWN
;
2282 case bp_access_watchpoint
:
2283 if (bs
->old_val
!= NULL
)
2285 annotate_watchpoint (bs
->breakpoint_at
->number
);
2286 if (ui_out_is_mi_like_p (uiout
))
2287 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2288 mention (bs
->breakpoint_at
);
2289 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2290 ui_out_text (uiout
, "\nOld value = ");
2291 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2292 ui_out_field_stream (uiout
, "old", stb
);
2293 value_free (bs
->old_val
);
2295 ui_out_text (uiout
, "\nNew value = ");
2299 mention (bs
->breakpoint_at
);
2300 if (ui_out_is_mi_like_p (uiout
))
2301 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2302 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2303 ui_out_text (uiout
, "\nValue = ");
2305 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0,Val_pretty_default
);
2306 ui_out_field_stream (uiout
, "new", stb
);
2307 do_cleanups (ui_out_chain
);
2308 ui_out_text (uiout
, "\n");
2309 return PRINT_UNKNOWN
;
2312 /* Fall through, we don't deal with these types of breakpoints
2316 if (ui_out_is_mi_like_p (uiout
))
2317 ui_out_field_string (uiout
, "reason", "function-finished");
2318 return PRINT_UNKNOWN
;
2322 if (ui_out_is_mi_like_p (uiout
))
2323 ui_out_field_string (uiout
, "reason", "location-reached");
2324 return PRINT_UNKNOWN
;
2329 case bp_longjmp_resume
:
2330 case bp_step_resume
:
2331 case bp_through_sigtramp
:
2332 case bp_watchpoint_scope
:
2335 return PRINT_UNKNOWN
;
2339 /* Generic routine for printing messages indicating why we
2340 stopped. The behavior of this function depends on the value
2341 'print_it' in the bpstat structure. Under some circumstances we
2342 may decide not to print anything here and delegate the task to
2345 static enum print_stop_action
2346 print_bp_stop_message (bpstat bs
)
2348 switch (bs
->print_it
)
2351 /* Nothing should be printed for this bpstat entry. */
2352 return PRINT_UNKNOWN
;
2356 /* We still want to print the frame, but we already printed the
2357 relevant messages. */
2358 return PRINT_SRC_AND_LOC
;
2361 case print_it_normal
:
2362 /* Normal case. Call the breakpoint's print_it method, or
2363 print_it_typical. */
2364 if (bs
->breakpoint_at
!= NULL
&& bs
->breakpoint_at
->ops
!= NULL
2365 && bs
->breakpoint_at
->ops
->print_it
!= NULL
)
2366 return bs
->breakpoint_at
->ops
->print_it (bs
->breakpoint_at
);
2368 return print_it_typical (bs
);
2372 internal_error (__FILE__
, __LINE__
,
2373 "print_bp_stop_message: unrecognized enum value");
2378 /* Print a message indicating what happened. This is called from
2379 normal_stop(). The input to this routine is the head of the bpstat
2380 list - a list of the eventpoints that caused this stop. This
2381 routine calls the generic print routine for printing a message
2382 about reasons for stopping. This will print (for example) the
2383 "Breakpoint n," part of the output. The return value of this
2386 PRINT_UNKNOWN: Means we printed nothing
2387 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2388 code to print the location. An example is
2389 "Breakpoint 1, " which should be followed by
2391 PRINT_SRC_ONLY: Means we printed something, but there is no need
2392 to also print the location part of the message.
2393 An example is the catch/throw messages, which
2394 don't require a location appended to the end.
2395 PRINT_NOTHING: We have done some printing and we don't need any
2396 further info to be printed.*/
2398 enum print_stop_action
2399 bpstat_print (bpstat bs
)
2403 /* Maybe another breakpoint in the chain caused us to stop.
2404 (Currently all watchpoints go on the bpstat whether hit or not.
2405 That probably could (should) be changed, provided care is taken
2406 with respect to bpstat_explains_signal). */
2407 for (; bs
; bs
= bs
->next
)
2409 val
= print_bp_stop_message (bs
);
2410 if (val
== PRINT_SRC_ONLY
2411 || val
== PRINT_SRC_AND_LOC
2412 || val
== PRINT_NOTHING
)
2416 /* We reached the end of the chain, or we got a null BS to start
2417 with and nothing was printed. */
2418 return PRINT_UNKNOWN
;
2421 /* Evaluate the expression EXP and return 1 if value is zero.
2422 This is used inside a catch_errors to evaluate the breakpoint condition.
2423 The argument is a "struct expression *" that has been cast to char * to
2424 make it pass through catch_errors. */
2427 breakpoint_cond_eval (void *exp
)
2429 struct value
*mark
= value_mark ();
2430 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2431 value_free_to_mark (mark
);
2435 /* Allocate a new bpstat and chain it to the current one. */
2438 bpstat_alloc (struct breakpoint
*b
, bpstat cbs
/* Current "bs" value */ )
2442 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2444 bs
->breakpoint_at
= b
;
2445 /* If the condition is false, etc., don't do the commands. */
2446 bs
->commands
= NULL
;
2448 bs
->print_it
= print_it_normal
;
2452 /* Possible return values for watchpoint_check (this can't be an enum
2453 because of check_errors). */
2454 /* The watchpoint has been deleted. */
2455 #define WP_DELETED 1
2456 /* The value has changed. */
2457 #define WP_VALUE_CHANGED 2
2458 /* The value has not changed. */
2459 #define WP_VALUE_NOT_CHANGED 3
2461 #define BP_TEMPFLAG 1
2462 #define BP_HARDWAREFLAG 2
2464 /* Check watchpoint condition. */
2467 watchpoint_check (void *p
)
2469 bpstat bs
= (bpstat
) p
;
2470 struct breakpoint
*b
;
2471 struct frame_info
*fr
;
2472 int within_current_scope
;
2474 b
= bs
->breakpoint_at
;
2476 if (b
->exp_valid_block
== NULL
)
2477 within_current_scope
= 1;
2480 /* There is no current frame at this moment. If we're going to have
2481 any chance of handling watchpoints on local variables, we'll need
2482 the frame chain (so we can determine if we're in scope). */
2483 reinit_frame_cache ();
2484 fr
= frame_find_by_id (b
->watchpoint_frame
);
2485 within_current_scope
= (fr
!= NULL
);
2486 /* in_function_epilogue_p() returns a non-zero value if we're still
2487 in the function but the stack frame has already been invalidated.
2488 Since we can't rely on the values of local variables after the
2489 stack has been destroyed, we are treating the watchpoint in that
2490 state as `not changed' without further checking.
2492 vinschen/2003-09-04: The former implementation left out the case
2493 that the watchpoint frame couldn't be found by frame_find_by_id()
2494 because the current PC is currently in an epilogue. Calling
2495 gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */
2496 if ((!within_current_scope
|| fr
== get_current_frame ())
2497 && gdbarch_in_function_epilogue_p (current_gdbarch
, read_pc ()))
2498 return WP_VALUE_NOT_CHANGED
;
2499 if (fr
&& within_current_scope
)
2500 /* If we end up stopping, the current frame will get selected
2501 in normal_stop. So this call to select_frame won't affect
2506 if (within_current_scope
)
2508 /* We use value_{,free_to_}mark because it could be a
2509 *long* time before we return to the command level and
2510 call free_all_values. We can't call free_all_values because
2511 we might be in the middle of evaluating a function call. */
2513 struct value
*mark
= value_mark ();
2514 struct value
*new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2515 if (!value_equal (b
->val
, new_val
))
2517 release_value (new_val
);
2518 value_free_to_mark (mark
);
2519 bs
->old_val
= b
->val
;
2521 /* We will stop here */
2522 return WP_VALUE_CHANGED
;
2526 /* Nothing changed, don't do anything. */
2527 value_free_to_mark (mark
);
2528 /* We won't stop here */
2529 return WP_VALUE_NOT_CHANGED
;
2534 /* This seems like the only logical thing to do because
2535 if we temporarily ignored the watchpoint, then when
2536 we reenter the block in which it is valid it contains
2537 garbage (in the case of a function, it may have two
2538 garbage values, one before and one after the prologue).
2539 So we can't even detect the first assignment to it and
2540 watch after that (since the garbage may or may not equal
2541 the first value assigned). */
2542 /* We print all the stop information in print_it_typical(), but
2543 in this case, by the time we call print_it_typical() this bp
2544 will be deleted already. So we have no choice but print the
2545 information here. */
2546 if (ui_out_is_mi_like_p (uiout
))
2547 ui_out_field_string (uiout
, "reason", "watchpoint-scope");
2548 ui_out_text (uiout
, "\nWatchpoint ");
2549 ui_out_field_int (uiout
, "wpnum", bs
->breakpoint_at
->number
);
2550 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2551 which its expression is valid.\n");
2553 if (b
->related_breakpoint
)
2554 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2555 b
->disposition
= disp_del_at_next_stop
;
2561 /* Get a bpstat associated with having just stopped at address
2564 /* Determine whether we stopped at a breakpoint, etc, or whether we
2565 don't understand this stop. Result is a chain of bpstat's such that:
2567 if we don't understand the stop, the result is a null pointer.
2569 if we understand why we stopped, the result is not null.
2571 Each element of the chain refers to a particular breakpoint or
2572 watchpoint at which we have stopped. (We may have stopped for
2573 several reasons concurrently.)
2575 Each element of the chain has valid next, breakpoint_at,
2576 commands, FIXME??? fields. */
2579 bpstat_stop_status (CORE_ADDR bp_addr
, ptid_t ptid
)
2581 struct breakpoint
*b
, *temp
;
2582 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2583 int real_breakpoint
= 0;
2584 /* Root of the chain of bpstat's */
2585 struct bpstats root_bs
[1];
2586 /* Pointer to the last thing in the chain currently. */
2587 bpstat bs
= root_bs
;
2588 int thread_id
= pid_to_thread_id (ptid
);
2590 ALL_BREAKPOINTS_SAFE (b
, temp
)
2592 if (!breakpoint_enabled (b
) && b
->enable_state
!= bp_permanent
)
2595 /* Hardware watchpoints are treated as non-existent if the reason we
2596 stopped wasn't a hardware watchpoint (we didn't stop on some data
2597 address). Otherwise gdb won't stop on a break instruction in the code
2598 (not from a breakpoint) when a hardware watchpoint has been defined. */
2599 if (b
->type
!= bp_watchpoint
2600 && !((b
->type
== bp_hardware_watchpoint
2601 || b
->type
== bp_read_watchpoint
2602 || b
->type
== bp_access_watchpoint
)
2603 && target_stopped_data_address () != 0)
2604 && b
->type
!= bp_hardware_breakpoint
2605 && b
->type
!= bp_catch_fork
2606 && b
->type
!= bp_catch_vfork
2607 && b
->type
!= bp_catch_exec
2608 && b
->type
!= bp_catch_catch
2609 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2611 if (b
->loc
->address
!= bp_addr
) /* address doesn't match */
2613 if (overlay_debugging
/* unmapped overlay section */
2614 && section_is_overlay (b
->loc
->section
)
2615 && !section_is_mapped (b
->loc
->section
))
2619 if (b
->type
== bp_hardware_breakpoint
)
2621 if (b
->loc
->address
!= bp_addr
)
2623 if (overlay_debugging
/* unmapped overlay section */
2624 && section_is_overlay (b
->loc
->section
)
2625 && !section_is_mapped (b
->loc
->section
))
2629 /* Is this a catchpoint of a load or unload? If so, did we
2630 get a load or unload of the specified library? If not,
2632 if ((b
->type
== bp_catch_load
)
2633 #if defined(SOLIB_HAVE_LOAD_EVENT)
2634 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2635 || ((b
->dll_pathname
!= NULL
)
2636 && (strcmp (b
->dll_pathname
,
2637 SOLIB_LOADED_LIBRARY_PATHNAME (
2638 PIDGET (inferior_ptid
)))
2644 if ((b
->type
== bp_catch_unload
)
2645 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2646 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2647 || ((b
->dll_pathname
!= NULL
)
2648 && (strcmp (b
->dll_pathname
,
2649 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2650 PIDGET (inferior_ptid
)))
2656 if ((b
->type
== bp_catch_fork
)
2657 && !inferior_has_forked (PIDGET (inferior_ptid
),
2658 &b
->forked_inferior_pid
))
2661 if ((b
->type
== bp_catch_vfork
)
2662 && !inferior_has_vforked (PIDGET (inferior_ptid
),
2663 &b
->forked_inferior_pid
))
2666 if ((b
->type
== bp_catch_exec
)
2667 && !inferior_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2670 if (ep_is_exception_catchpoint (b
) &&
2671 !(current_exception_event
= target_get_current_exception_event ()))
2674 /* Come here if it's a watchpoint, or if the break address matches */
2676 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2678 /* Watchpoints may change this, if not found to have triggered. */
2682 if (b
->type
== bp_watchpoint
||
2683 b
->type
== bp_hardware_watchpoint
)
2685 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2687 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2688 int e
= catch_errors (watchpoint_check
, bs
, message
,
2690 do_cleanups (cleanups
);
2694 /* We've already printed what needs to be printed. */
2695 /* Actually this is superfluous, because by the time we
2696 call print_it_typical() the wp will be already deleted,
2697 and the function will return immediately. */
2698 bs
->print_it
= print_it_done
;
2701 case WP_VALUE_CHANGED
:
2705 case WP_VALUE_NOT_CHANGED
:
2707 bs
->print_it
= print_it_noop
;
2714 /* Error from catch_errors. */
2715 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2716 if (b
->related_breakpoint
)
2717 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2718 b
->disposition
= disp_del_at_next_stop
;
2719 /* We've already printed what needs to be printed. */
2720 bs
->print_it
= print_it_done
;
2726 else if (b
->type
== bp_read_watchpoint
||
2727 b
->type
== bp_access_watchpoint
)
2733 addr
= target_stopped_data_address ();
2736 for (v
= b
->val_chain
; v
; v
= v
->next
)
2738 if (VALUE_LVAL (v
) == lval_memory
2739 && ! VALUE_LAZY (v
))
2741 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
2743 if (v
== b
->val_chain
2744 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2745 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2749 vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
2750 /* Exact match not required. Within range is
2752 if (addr
>= vaddr
&&
2753 addr
< vaddr
+ TYPE_LENGTH (VALUE_TYPE (v
)))
2760 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2762 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2763 int e
= catch_errors (watchpoint_check
, bs
, message
,
2765 do_cleanups (cleanups
);
2769 /* We've already printed what needs to be printed. */
2770 bs
->print_it
= print_it_done
;
2773 case WP_VALUE_CHANGED
:
2774 if (b
->type
== bp_read_watchpoint
)
2776 /* Don't stop: read watchpoints shouldn't fire if
2777 the value has changed. This is for targets
2778 which cannot set read-only watchpoints. */
2779 bs
->print_it
= print_it_noop
;
2785 case WP_VALUE_NOT_CHANGED
:
2792 /* Error from catch_errors. */
2793 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2794 if (b
->related_breakpoint
)
2795 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2796 b
->disposition
= disp_del_at_next_stop
;
2797 /* We've already printed what needs to be printed. */
2798 bs
->print_it
= print_it_done
;
2802 else /* found == 0 */
2804 /* This is a case where some watchpoint(s) triggered,
2805 but not at the address of this watchpoint (FOUND
2806 was left zero). So don't print anything for this
2808 bs
->print_it
= print_it_noop
;
2815 /* By definition, an encountered breakpoint is a triggered
2819 real_breakpoint
= 1;
2822 if (frame_id_p (b
->frame_id
)
2823 && !frame_id_eq (b
->frame_id
, get_frame_id (get_current_frame ())))
2827 int value_is_zero
= 0;
2831 /* Need to select the frame, with all that implies
2832 so that the conditions will have the right context. */
2833 select_frame (get_current_frame ());
2835 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2836 "Error in testing breakpoint condition:\n",
2838 /* FIXME-someday, should give breakpoint # */
2841 if (b
->cond
&& value_is_zero
)
2844 /* Don't consider this a hit. */
2847 else if (b
->thread
!= -1 && b
->thread
!= thread_id
)
2850 /* Don't consider this a hit. */
2853 else if (b
->ignore_count
> 0)
2856 annotate_ignore_count_change ();
2861 /* We will stop here */
2862 if (b
->disposition
== disp_disable
)
2863 b
->enable_state
= bp_disabled
;
2866 bs
->commands
= b
->commands
;
2868 (strcmp ("silent", bs
->commands
->line
) == 0
2869 || (xdb_commands
&& strcmp ("Q", bs
->commands
->line
) == 0)))
2871 bs
->commands
= bs
->commands
->next
;
2874 bs
->commands
= copy_command_lines (bs
->commands
);
2877 /* Print nothing for this entry if we dont stop or if we dont print. */
2878 if (bs
->stop
== 0 || bs
->print
== 0)
2879 bs
->print_it
= print_it_noop
;
2882 bs
->next
= NULL
; /* Terminate the chain */
2883 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2885 /* The value of a hardware watchpoint hasn't changed, but the
2886 intermediate memory locations we are watching may have. */
2887 if (bs
&& !bs
->stop
&&
2888 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
2889 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
2890 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
2892 remove_breakpoints ();
2893 insert_breakpoints ();
2898 /* Tell what to do about this bpstat. */
2900 bpstat_what (bpstat bs
)
2902 /* Classify each bpstat as one of the following. */
2905 /* This bpstat element has no effect on the main_action. */
2908 /* There was a watchpoint, stop but don't print. */
2911 /* There was a watchpoint, stop and print. */
2914 /* There was a breakpoint but we're not stopping. */
2917 /* There was a breakpoint, stop but don't print. */
2920 /* There was a breakpoint, stop and print. */
2923 /* We hit the longjmp breakpoint. */
2926 /* We hit the longjmp_resume breakpoint. */
2929 /* We hit the step_resume breakpoint. */
2932 /* We hit the through_sigtramp breakpoint. */
2935 /* We hit the shared library event breakpoint. */
2938 /* We caught a shared library event. */
2941 /* This is just used to count how many enums there are. */
2945 /* Here is the table which drives this routine. So that we can
2946 format it pretty, we define some abbreviations for the
2947 enum bpstat_what codes. */
2948 #define kc BPSTAT_WHAT_KEEP_CHECKING
2949 #define ss BPSTAT_WHAT_STOP_SILENT
2950 #define sn BPSTAT_WHAT_STOP_NOISY
2951 #define sgl BPSTAT_WHAT_SINGLE
2952 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2953 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2954 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2955 #define sr BPSTAT_WHAT_STEP_RESUME
2956 #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
2957 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2958 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2960 /* "Can't happen." Might want to print an error message.
2961 abort() is not out of the question, but chances are GDB is just
2962 a bit confused, not unusable. */
2963 #define err BPSTAT_WHAT_STOP_NOISY
2965 /* Given an old action and a class, come up with a new action. */
2966 /* One interesting property of this table is that wp_silent is the same
2967 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2968 after stopping, the check for whether to step over a breakpoint
2969 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2970 reference to how we stopped. We retain separate wp_silent and
2971 bp_silent codes in case we want to change that someday.
2973 Another possibly interesting property of this table is that
2974 there's a partial ordering, priority-like, of the actions. Once
2975 you've decided that some action is appropriate, you'll never go
2976 back and decide something of a lower priority is better. The
2979 kc < clr sgl shl shlr slr sn sr ss ts
2980 sgl < clrs shl shlr slr sn sr ss ts
2981 slr < err shl shlr sn sr ss ts
2982 clr < clrs err shl shlr sn sr ss ts
2983 clrs < err shl shlr sn sr ss ts
2984 ss < shl shlr sn sr ts
2991 What I think this means is that we don't need a damned table
2992 here. If you just put the rows and columns in the right order,
2993 it'd look awfully regular. We could simply walk the bpstat list
2994 and choose the highest priority action we find, with a little
2995 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
2996 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
2997 is messy anyway). */
2999 /* step_resume entries: a step resume breakpoint overrides another
3000 breakpoint of signal handling (see comment in wait_for_inferior
3001 at where we set the step_resume breakpoint). */
3002 /* We handle the through_sigtramp_breakpoint the same way; having both
3003 one of those and a step_resume_breakpoint is probably very rare (?). */
3005 static const enum bpstat_what_main_action
3006 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
3009 /* kc ss sn sgl slr clr clrs sr ts shl shlr
3012 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, ts
, shl
, shlr
},
3014 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
3016 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
3018 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, ts
, shl
, shlr
},
3020 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
3022 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
3024 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, ts
, shl
, shlr
},
3026 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, ts
, shl
, shlr
},
3028 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, ts
, shl
, shlr
},
3030 {ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, shl
, shlr
},
3032 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, shl
, ts
, shl
, shlr
},
3034 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, ts
, shlr
, shlr
}
3049 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
3050 struct bpstat_what retval
;
3052 retval
.call_dummy
= 0;
3053 for (; bs
!= NULL
; bs
= bs
->next
)
3055 enum class bs_class
= no_effect
;
3056 if (bs
->breakpoint_at
== NULL
)
3057 /* I suspect this can happen if it was a momentary breakpoint
3058 which has since been deleted. */
3060 switch (bs
->breakpoint_at
->type
)
3066 case bp_hardware_breakpoint
:
3072 bs_class
= bp_noisy
;
3074 bs_class
= bp_silent
;
3077 bs_class
= bp_nostop
;
3080 case bp_hardware_watchpoint
:
3081 case bp_read_watchpoint
:
3082 case bp_access_watchpoint
:
3086 bs_class
= wp_noisy
;
3088 bs_class
= wp_silent
;
3091 /* There was a watchpoint, but we're not stopping.
3092 This requires no further action. */
3093 bs_class
= no_effect
;
3096 bs_class
= long_jump
;
3098 case bp_longjmp_resume
:
3099 bs_class
= long_resume
;
3101 case bp_step_resume
:
3104 bs_class
= step_resume
;
3107 /* It is for the wrong frame. */
3108 bs_class
= bp_nostop
;
3110 case bp_through_sigtramp
:
3111 bs_class
= through_sig
;
3113 case bp_watchpoint_scope
:
3114 bs_class
= bp_nostop
;
3116 case bp_shlib_event
:
3117 bs_class
= shlib_event
;
3119 case bp_thread_event
:
3120 case bp_overlay_event
:
3121 bs_class
= bp_nostop
;
3124 case bp_catch_unload
:
3125 /* Only if this catchpoint triggered should we cause the
3126 step-out-of-dld behaviour. Otherwise, we ignore this
3129 bs_class
= catch_shlib_event
;
3131 bs_class
= no_effect
;
3134 case bp_catch_vfork
:
3139 bs_class
= bp_noisy
;
3141 bs_class
= bp_silent
;
3144 /* There was a catchpoint, but we're not stopping.
3145 This requires no further action. */
3146 bs_class
= no_effect
;
3148 case bp_catch_catch
:
3149 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
3150 bs_class
= bp_nostop
;
3152 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
3154 case bp_catch_throw
:
3155 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
3156 bs_class
= bp_nostop
;
3158 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
3161 /* Make sure the action is stop (silent or noisy),
3162 so infrun.c pops the dummy frame. */
3163 bs_class
= bp_silent
;
3164 retval
.call_dummy
= 1;
3167 current_action
= table
[(int) bs_class
][(int) current_action
];
3169 retval
.main_action
= current_action
;
3173 /* Nonzero if we should step constantly (e.g. watchpoints on machines
3174 without hardware support). This isn't related to a specific bpstat,
3175 just to things like whether watchpoints are set. */
3178 bpstat_should_step (void)
3180 struct breakpoint
*b
;
3182 if (breakpoint_enabled (b
) && b
->type
== bp_watchpoint
)
3187 /* Nonzero if there are enabled hardware watchpoints. */
3189 bpstat_have_active_hw_watchpoints (void)
3191 struct bp_location
*bpt
;
3192 ALL_BP_LOCATIONS (bpt
)
3193 if (breakpoint_enabled (bpt
->owner
)
3195 && bpt
->loc_type
== bp_loc_hardware_watchpoint
)
3201 /* Given a bpstat that records zero or more triggered eventpoints, this
3202 function returns another bpstat which contains only the catchpoints
3203 on that first list, if any. */
3205 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3207 struct bpstats root_bs
[1];
3208 bpstat bs
= root_bs
;
3209 struct breakpoint
*ep
;
3212 bpstat_clear (cp_list
);
3213 root_bs
->next
= NULL
;
3215 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3217 /* Is this eventpoint a catchpoint? If not, ignore it. */
3218 ep
= ep_list
->breakpoint_at
;
3221 if ((ep
->type
!= bp_catch_load
) &&
3222 (ep
->type
!= bp_catch_unload
) &&
3223 (ep
->type
!= bp_catch_catch
) &&
3224 (ep
->type
!= bp_catch_throw
))
3225 /* pai: (temp) ADD fork/vfork here!! */
3228 /* Yes; add it to the list. */
3229 bs
= bpstat_alloc (ep
, bs
);
3234 #if defined(SOLIB_ADD)
3235 /* Also, for each triggered catchpoint, tag it with the name of
3236 the library that caused this trigger. (We copy the name now,
3237 because it's only guaranteed to be available NOW, when the
3238 catchpoint triggers. Clients who may wish to know the name
3239 later must get it from the catchpoint itself.) */
3240 if (ep
->triggered_dll_pathname
!= NULL
)
3241 xfree (ep
->triggered_dll_pathname
);
3242 if (ep
->type
== bp_catch_load
)
3243 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3244 PIDGET (inferior_ptid
));
3246 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3247 PIDGET (inferior_ptid
));
3249 dll_pathname
= NULL
;
3253 ep
->triggered_dll_pathname
= (char *)
3254 xmalloc (strlen (dll_pathname
) + 1);
3255 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3258 ep
->triggered_dll_pathname
= NULL
;
3264 /* Print B to gdb_stdout. */
3266 print_one_breakpoint (struct breakpoint
*b
,
3267 CORE_ADDR
*last_addr
)
3269 struct command_line
*l
;
3271 struct ep_type_description
3276 static struct ep_type_description bptypes
[] =
3278 {bp_none
, "?deleted?"},
3279 {bp_breakpoint
, "breakpoint"},
3280 {bp_hardware_breakpoint
, "hw breakpoint"},
3281 {bp_until
, "until"},
3282 {bp_finish
, "finish"},
3283 {bp_watchpoint
, "watchpoint"},
3284 {bp_hardware_watchpoint
, "hw watchpoint"},
3285 {bp_read_watchpoint
, "read watchpoint"},
3286 {bp_access_watchpoint
, "acc watchpoint"},
3287 {bp_longjmp
, "longjmp"},
3288 {bp_longjmp_resume
, "longjmp resume"},
3289 {bp_step_resume
, "step resume"},
3290 {bp_through_sigtramp
, "sigtramp"},
3291 {bp_watchpoint_scope
, "watchpoint scope"},
3292 {bp_call_dummy
, "call dummy"},
3293 {bp_shlib_event
, "shlib events"},
3294 {bp_thread_event
, "thread events"},
3295 {bp_overlay_event
, "overlay events"},
3296 {bp_catch_load
, "catch load"},
3297 {bp_catch_unload
, "catch unload"},
3298 {bp_catch_fork
, "catch fork"},
3299 {bp_catch_vfork
, "catch vfork"},
3300 {bp_catch_exec
, "catch exec"},
3301 {bp_catch_catch
, "catch catch"},
3302 {bp_catch_throw
, "catch throw"}
3305 static char *bpdisps
[] =
3306 {"del", "dstp", "dis", "keep"};
3307 static char bpenables
[] = "nynny";
3308 char wrap_indent
[80];
3309 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3310 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3311 struct cleanup
*bkpt_chain
;
3314 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "bkpt");
3318 ui_out_field_int (uiout
, "number", b
->number
);
3322 if (((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3323 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3324 internal_error (__FILE__
, __LINE__
,
3325 "bptypes table does not describe type #%d.",
3327 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3331 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3335 ui_out_field_fmt (uiout
, "enabled", "%c", bpenables
[(int) b
->enable_state
]);
3336 ui_out_spaces (uiout
, 2);
3339 strcpy (wrap_indent
, " ");
3342 if (TARGET_ADDR_BIT
<= 32)
3343 strcat (wrap_indent
, " ");
3345 strcat (wrap_indent
, " ");
3348 if (b
->ops
!= NULL
&& b
->ops
->print_one
!= NULL
)
3349 b
->ops
->print_one (b
, last_addr
);
3354 internal_error (__FILE__
, __LINE__
,
3355 "print_one_breakpoint: bp_none encountered\n");
3359 case bp_hardware_watchpoint
:
3360 case bp_read_watchpoint
:
3361 case bp_access_watchpoint
:
3362 /* Field 4, the address, is omitted (which makes the columns
3363 not line up too nicely with the headers, but the effect
3364 is relatively readable). */
3366 ui_out_field_skip (uiout
, "addr");
3368 print_expression (b
->exp
, stb
->stream
);
3369 ui_out_field_stream (uiout
, "what", stb
);
3373 case bp_catch_unload
:
3374 /* Field 4, the address, is omitted (which makes the columns
3375 not line up too nicely with the headers, but the effect
3376 is relatively readable). */
3378 ui_out_field_skip (uiout
, "addr");
3380 if (b
->dll_pathname
== NULL
)
3382 ui_out_field_string (uiout
, "what", "<any library>");
3383 ui_out_spaces (uiout
, 1);
3387 ui_out_text (uiout
, "library \"");
3388 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3389 ui_out_text (uiout
, "\" ");
3394 case bp_catch_vfork
:
3395 /* Field 4, the address, is omitted (which makes the columns
3396 not line up too nicely with the headers, but the effect
3397 is relatively readable). */
3399 ui_out_field_skip (uiout
, "addr");
3401 if (b
->forked_inferior_pid
!= 0)
3403 ui_out_text (uiout
, "process ");
3404 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3405 ui_out_spaces (uiout
, 1);
3409 /* Field 4, the address, is omitted (which makes the columns
3410 not line up too nicely with the headers, but the effect
3411 is relatively readable). */
3413 ui_out_field_skip (uiout
, "addr");
3415 if (b
->exec_pathname
!= NULL
)
3417 ui_out_text (uiout
, "program \"");
3418 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3419 ui_out_text (uiout
, "\" ");
3423 case bp_catch_catch
:
3424 /* Field 4, the address, is omitted (which makes the columns
3425 not line up too nicely with the headers, but the effect
3426 is relatively readable). */
3428 ui_out_field_skip (uiout
, "addr");
3430 ui_out_field_string (uiout
, "what", "exception catch");
3431 ui_out_spaces (uiout
, 1);
3434 case bp_catch_throw
:
3435 /* Field 4, the address, is omitted (which makes the columns
3436 not line up too nicely with the headers, but the effect
3437 is relatively readable). */
3439 ui_out_field_skip (uiout
, "addr");
3441 ui_out_field_string (uiout
, "what", "exception throw");
3442 ui_out_spaces (uiout
, 1);
3446 case bp_hardware_breakpoint
:
3450 case bp_longjmp_resume
:
3451 case bp_step_resume
:
3452 case bp_through_sigtramp
:
3453 case bp_watchpoint_scope
:
3455 case bp_shlib_event
:
3456 case bp_thread_event
:
3457 case bp_overlay_event
:
3462 ui_out_field_string (uiout
, "addr", "<PENDING>");
3464 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
3467 *last_addr
= b
->loc
->address
;
3470 sym
= find_pc_sect_function (b
->loc
->address
, b
->loc
->section
);
3473 ui_out_text (uiout
, "in ");
3474 ui_out_field_string (uiout
, "func",
3475 SYMBOL_PRINT_NAME (sym
));
3476 ui_out_wrap_hint (uiout
, wrap_indent
);
3477 ui_out_text (uiout
, " at ");
3479 ui_out_field_string (uiout
, "file", b
->source_file
);
3480 ui_out_text (uiout
, ":");
3481 ui_out_field_int (uiout
, "line", b
->line_number
);
3483 else if (b
->pending
)
3485 ui_out_field_string (uiout
, "pending", b
->addr_string
);
3489 print_address_symbolic (b
->loc
->address
, stb
->stream
, demangle
, "");
3490 ui_out_field_stream (uiout
, "at", stb
);
3495 if (b
->thread
!= -1)
3497 /* FIXME: This seems to be redundant and lost here; see the
3498 "stop only in" line a little further down. */
3499 ui_out_text (uiout
, " thread ");
3500 ui_out_field_int (uiout
, "thread", b
->thread
);
3503 ui_out_text (uiout
, "\n");
3505 if (frame_id_p (b
->frame_id
))
3508 ui_out_text (uiout
, "\tstop only in stack frame at ");
3509 /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
3511 ui_out_field_core_addr (uiout
, "frame", b
->frame_id
.stack_addr
);
3512 ui_out_text (uiout
, "\n");
3518 ui_out_text (uiout
, "\tstop only if ");
3519 print_expression (b
->cond
, stb
->stream
);
3520 ui_out_field_stream (uiout
, "cond", stb
);
3521 ui_out_text (uiout
, "\n");
3524 if (b
->pending
&& b
->cond_string
)
3527 ui_out_text (uiout
, "\tstop only if ");
3528 ui_out_field_string (uiout
, "cond", b
->cond_string
);
3529 ui_out_text (uiout
, "\n");
3532 if (b
->thread
!= -1)
3534 /* FIXME should make an annotation for this */
3535 ui_out_text (uiout
, "\tstop only in thread ");
3536 ui_out_field_int (uiout
, "thread", b
->thread
);
3537 ui_out_text (uiout
, "\n");
3540 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3542 /* FIXME should make an annotation for this */
3543 if (ep_is_catchpoint (b
))
3544 ui_out_text (uiout
, "\tcatchpoint");
3546 ui_out_text (uiout
, "\tbreakpoint");
3547 ui_out_text (uiout
, " already hit ");
3548 ui_out_field_int (uiout
, "times", b
->hit_count
);
3549 if (b
->hit_count
== 1)
3550 ui_out_text (uiout
, " time\n");
3552 ui_out_text (uiout
, " times\n");
3555 /* Output the count also if it is zero, but only if this is
3556 mi. FIXME: Should have a better test for this. */
3557 if (ui_out_is_mi_like_p (uiout
))
3558 if (show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3559 ui_out_field_int (uiout
, "times", b
->hit_count
);
3561 if (b
->ignore_count
)
3564 ui_out_text (uiout
, "\tignore next ");
3565 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3566 ui_out_text (uiout
, " hits\n");
3569 if ((l
= b
->commands
))
3571 struct cleanup
*script_chain
;
3574 script_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "script");
3575 print_command_lines (uiout
, l
, 4);
3576 do_cleanups (script_chain
);
3578 do_cleanups (bkpt_chain
);
3579 do_cleanups (old_chain
);
3582 struct captured_breakpoint_query_args
3588 do_captured_breakpoint_query (struct ui_out
*uiout
, void *data
)
3590 struct captured_breakpoint_query_args
*args
= data
;
3591 struct breakpoint
*b
;
3592 CORE_ADDR dummy_addr
= 0;
3595 if (args
->bnum
== b
->number
)
3597 print_one_breakpoint (b
, &dummy_addr
);
3605 gdb_breakpoint_query (struct ui_out
*uiout
, int bnum
)
3607 struct captured_breakpoint_query_args args
;
3609 /* For the moment we don't trust print_one_breakpoint() to not throw
3611 return catch_exceptions (uiout
, do_captured_breakpoint_query
, &args
,
3612 NULL
, RETURN_MASK_ALL
);
3615 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3616 catchpoints, et.al.). */
3619 user_settable_breakpoint (const struct breakpoint
*b
)
3621 return (b
->type
== bp_breakpoint
3622 || b
->type
== bp_catch_load
3623 || b
->type
== bp_catch_unload
3624 || b
->type
== bp_catch_fork
3625 || b
->type
== bp_catch_vfork
3626 || b
->type
== bp_catch_exec
3627 || b
->type
== bp_catch_catch
3628 || b
->type
== bp_catch_throw
3629 || b
->type
== bp_hardware_breakpoint
3630 || b
->type
== bp_watchpoint
3631 || b
->type
== bp_read_watchpoint
3632 || b
->type
== bp_access_watchpoint
3633 || b
->type
== bp_hardware_watchpoint
);
3636 /* Print information on user settable breakpoint (watchpoint, etc)
3637 number BNUM. If BNUM is -1 print all user settable breakpoints.
3638 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3641 breakpoint_1 (int bnum
, int allflag
)
3643 struct breakpoint
*b
;
3644 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3645 int nr_printable_breakpoints
;
3646 struct cleanup
*bkpttbl_chain
;
3648 /* Compute the number of rows in the table. */
3649 nr_printable_breakpoints
= 0;
3652 || bnum
== b
->number
)
3654 if (allflag
|| user_settable_breakpoint (b
))
3655 nr_printable_breakpoints
++;
3660 = make_cleanup_ui_out_table_begin_end (uiout
, 6, nr_printable_breakpoints
,
3664 = make_cleanup_ui_out_table_begin_end (uiout
, 5, nr_printable_breakpoints
,
3667 if (nr_printable_breakpoints
> 0)
3668 annotate_breakpoints_headers ();
3669 if (nr_printable_breakpoints
> 0)
3671 ui_out_table_header (uiout
, 3, ui_left
, "number", "Num"); /* 1 */
3672 if (nr_printable_breakpoints
> 0)
3674 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3675 if (nr_printable_breakpoints
> 0)
3677 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3678 if (nr_printable_breakpoints
> 0)
3680 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb"); /* 4 */
3683 if (nr_printable_breakpoints
> 0)
3685 if (TARGET_ADDR_BIT
<= 32)
3686 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3688 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3690 if (nr_printable_breakpoints
> 0)
3692 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3693 ui_out_table_body (uiout
);
3694 if (nr_printable_breakpoints
> 0)
3695 annotate_breakpoints_table ();
3699 || bnum
== b
->number
)
3701 /* We only print out user settable breakpoints unless the
3703 if (allflag
|| user_settable_breakpoint (b
))
3704 print_one_breakpoint (b
, &last_addr
);
3707 do_cleanups (bkpttbl_chain
);
3709 if (nr_printable_breakpoints
== 0)
3712 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3714 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3719 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3720 that a comparison of an unsigned with -1 is always false. */
3721 if (last_addr
!= (CORE_ADDR
) -1)
3722 set_next_address (last_addr
);
3725 /* FIXME? Should this be moved up so that it is only called when
3726 there have been breakpoints? */
3727 annotate_breakpoints_table_end ();
3731 breakpoints_info (char *bnum_exp
, int from_tty
)
3736 bnum
= parse_and_eval_long (bnum_exp
);
3738 breakpoint_1 (bnum
, 0);
3742 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3747 bnum
= parse_and_eval_long (bnum_exp
);
3749 breakpoint_1 (bnum
, 1);
3752 /* Print a message describing any breakpoints set at PC. */
3755 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
)
3758 struct breakpoint
*b
;
3761 if (b
->loc
->address
== pc
) /* address match / overlay match */
3762 if (!b
->pending
&& (!overlay_debugging
|| b
->loc
->section
== section
))
3766 printf_filtered ("Note: breakpoint%s ", (others
> 1) ? "s" : "");
3768 if (b
->loc
->address
== pc
) /* address match / overlay match */
3769 if (!b
->pending
&& (!overlay_debugging
|| b
->loc
->section
== section
))
3772 printf_filtered ("%d%s%s ",
3774 ((b
->enable_state
== bp_disabled
||
3775 b
->enable_state
== bp_shlib_disabled
||
3776 b
->enable_state
== bp_call_disabled
)
3778 : b
->enable_state
== bp_permanent
3782 : ((others
== 1) ? " and" : ""));
3784 printf_filtered ("also set at pc ");
3785 print_address_numeric (pc
, 1, gdb_stdout
);
3786 printf_filtered (".\n");
3790 /* Set the default place to put a breakpoint
3791 for the `break' command with no arguments. */
3794 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3797 default_breakpoint_valid
= valid
;
3798 default_breakpoint_address
= addr
;
3799 default_breakpoint_symtab
= symtab
;
3800 default_breakpoint_line
= line
;
3803 /* Return true iff it is meaningful to use the address member of
3804 BPT. For some breakpoint types, the address member is irrelevant
3805 and it makes no sense to attempt to compare it to other addresses
3806 (or use it for any other purpose either).
3808 More specifically, each of the following breakpoint types will always
3809 have a zero valued address and we don't want check_duplicates() to mark
3810 breakpoints of any of these types to be a duplicate of an actual
3811 breakpoint at address zero:
3814 bp_hardware_watchpoint
3816 bp_access_watchpoint
3823 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3825 enum bptype type
= bpt
->type
;
3827 return (type
!= bp_watchpoint
3828 && type
!= bp_hardware_watchpoint
3829 && type
!= bp_read_watchpoint
3830 && type
!= bp_access_watchpoint
3831 && type
!= bp_catch_exec
3832 && type
!= bp_longjmp_resume
3833 && type
!= bp_catch_fork
3834 && type
!= bp_catch_vfork
);
3837 /* Rescan breakpoints at the same address and section as BPT,
3838 marking the first one as "first" and any others as "duplicates".
3839 This is so that the bpt instruction is only inserted once.
3840 If we have a permanent breakpoint at the same place as BPT, make
3841 that one the official one, and the rest as duplicates. */
3844 check_duplicates (struct breakpoint
*bpt
)
3846 struct bp_location
*b
;
3848 struct bp_location
*perm_bp
= 0;
3849 CORE_ADDR address
= bpt
->loc
->address
;
3850 asection
*section
= bpt
->loc
->section
;
3852 if (! breakpoint_address_is_meaningful (bpt
))
3855 ALL_BP_LOCATIONS (b
)
3856 if (b
->owner
->enable_state
!= bp_disabled
3857 && b
->owner
->enable_state
!= bp_shlib_disabled
3858 && !b
->owner
->pending
3859 && b
->owner
->enable_state
!= bp_call_disabled
3860 && b
->address
== address
/* address / overlay match */
3861 && (!overlay_debugging
|| b
->section
== section
)
3862 && breakpoint_address_is_meaningful (b
->owner
))
3864 /* Have we found a permanent breakpoint? */
3865 if (b
->owner
->enable_state
== bp_permanent
)
3872 b
->duplicate
= count
> 1;
3875 /* If we found a permanent breakpoint at this address, go over the
3876 list again and declare all the other breakpoints there to be the
3880 perm_bp
->duplicate
= 0;
3882 /* Permanent breakpoint should always be inserted. */
3883 if (! perm_bp
->inserted
)
3884 internal_error (__FILE__
, __LINE__
,
3885 "allegedly permanent breakpoint is not "
3886 "actually inserted");
3888 ALL_BP_LOCATIONS (b
)
3891 if (b
->owner
->enable_state
!= bp_disabled
3892 && b
->owner
->enable_state
!= bp_shlib_disabled
3893 && !b
->owner
->pending
3894 && b
->owner
->enable_state
!= bp_call_disabled
3895 && b
->address
== address
/* address / overlay match */
3896 && (!overlay_debugging
|| b
->section
== section
)
3897 && breakpoint_address_is_meaningful (b
->owner
))
3900 internal_error (__FILE__
, __LINE__
,
3901 "another breakpoint was inserted on top of "
3902 "a permanent breakpoint");
3911 breakpoint_adjustment_warning (CORE_ADDR from_addr
, CORE_ADDR to_addr
,
3912 int bnum
, int have_bnum
)
3917 strcpy (astr1
, local_hex_string_custom ((unsigned long) from_addr
, "08l"));
3918 strcpy (astr2
, local_hex_string_custom ((unsigned long) to_addr
, "08l"));
3920 warning ("Breakpoint %d address previously adjusted from %s to %s.",
3921 bnum
, astr1
, astr2
);
3923 warning ("Breakpoint address adjusted from %s to %s.", astr1
, astr2
);
3926 /* Adjust a breakpoint's address to account for architectural constraints
3927 on breakpoint placement. Return the adjusted address. Note: Very
3928 few targets require this kind of adjustment. For most targets,
3929 this function is simply the identity function. */
3932 adjust_breakpoint_address (CORE_ADDR bpaddr
, enum bptype bptype
)
3934 if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch
))
3936 /* Very few targets need any kind of breakpoint adjustment. */
3939 else if (bptype
== bp_watchpoint
3940 || bptype
== bp_hardware_watchpoint
3941 || bptype
== bp_read_watchpoint
3942 || bptype
== bp_access_watchpoint
3943 || bptype
== bp_catch_fork
3944 || bptype
== bp_catch_vfork
3945 || bptype
== bp_catch_exec
)
3947 /* Watchpoints and the various bp_catch_* eventpoints should not
3948 have their addresses modified. */
3953 CORE_ADDR adjusted_bpaddr
;
3955 /* Some targets have architectural constraints on the placement
3956 of breakpoint instructions. Obtain the adjusted address. */
3957 adjusted_bpaddr
= gdbarch_adjust_breakpoint_address (current_gdbarch
,
3960 /* An adjusted breakpoint address can significantly alter
3961 a user's expectations. Print a warning if an adjustment
3963 if (adjusted_bpaddr
!= bpaddr
)
3964 breakpoint_adjustment_warning (bpaddr
, adjusted_bpaddr
, 0, 0);
3966 return adjusted_bpaddr
;
3970 /* Allocate a struct bp_location. */
3972 static struct bp_location
*
3973 allocate_bp_location (struct breakpoint
*bpt
, enum bptype bp_type
)
3975 struct bp_location
*loc
, *loc_p
;
3977 loc
= xmalloc (sizeof (struct bp_location
));
3978 memset (loc
, 0, sizeof (*loc
));
3988 case bp_longjmp_resume
:
3989 case bp_step_resume
:
3990 case bp_through_sigtramp
:
3991 case bp_watchpoint_scope
:
3993 case bp_shlib_event
:
3994 case bp_thread_event
:
3995 case bp_overlay_event
:
3997 case bp_catch_unload
:
3998 loc
->loc_type
= bp_loc_software_breakpoint
;
4000 case bp_hardware_breakpoint
:
4001 loc
->loc_type
= bp_loc_hardware_breakpoint
;
4003 case bp_hardware_watchpoint
:
4004 case bp_read_watchpoint
:
4005 case bp_access_watchpoint
:
4006 loc
->loc_type
= bp_loc_hardware_watchpoint
;
4010 case bp_catch_vfork
:
4012 case bp_catch_catch
:
4013 case bp_catch_throw
:
4014 loc
->loc_type
= bp_loc_other
;
4017 internal_error (__FILE__
, __LINE__
, "unknown breakpoint type");
4020 /* Add this breakpoint to the end of the chain. */
4022 loc_p
= bp_location_chain
;
4024 bp_location_chain
= loc
;
4028 loc_p
= loc_p
->next
;
4035 /* set_raw_breakpoint() is a low level routine for allocating and
4036 partially initializing a breakpoint of type BPTYPE. The newly
4037 created breakpoint's address, section, source file name, and line
4038 number are provided by SAL. The newly created and partially
4039 initialized breakpoint is added to the breakpoint chain and
4040 is also returned as the value of this function.
4042 It is expected that the caller will complete the initialization of
4043 the newly created breakpoint struct as well as output any status
4044 information regarding the creation of a new breakpoint. In
4045 particular, set_raw_breakpoint() does NOT set the breakpoint
4046 number! Care should be taken to not allow an error() to occur
4047 prior to completing the initialization of the breakpoint. If this
4048 should happen, a bogus breakpoint will be left on the chain. */
4051 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
4053 struct breakpoint
*b
, *b1
;
4055 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
4056 memset (b
, 0, sizeof (*b
));
4057 b
->loc
= allocate_bp_location (b
, bptype
);
4058 b
->loc
->requested_address
= sal
.pc
;
4059 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4061 if (sal
.symtab
== NULL
)
4062 b
->source_file
= NULL
;
4064 b
->source_file
= savestring (sal
.symtab
->filename
,
4065 strlen (sal
.symtab
->filename
));
4066 b
->loc
->section
= sal
.section
;
4068 b
->language
= current_language
->la_language
;
4069 b
->input_radix
= input_radix
;
4071 b
->line_number
= sal
.line
;
4072 b
->enable_state
= bp_enabled
;
4075 b
->ignore_count
= 0;
4077 b
->frame_id
= null_frame_id
;
4078 b
->dll_pathname
= NULL
;
4079 b
->triggered_dll_pathname
= NULL
;
4080 b
->forked_inferior_pid
= 0;
4081 b
->exec_pathname
= NULL
;
4085 /* Add this breakpoint to the end of the chain
4086 so that a list of breakpoints will come out in order
4087 of increasing numbers. */
4089 b1
= breakpoint_chain
;
4091 breakpoint_chain
= b
;
4099 check_duplicates (b
);
4100 breakpoints_changed ();
4106 /* Note that the breakpoint object B describes a permanent breakpoint
4107 instruction, hard-wired into the inferior's code. */
4109 make_breakpoint_permanent (struct breakpoint
*b
)
4111 b
->enable_state
= bp_permanent
;
4113 /* By definition, permanent breakpoints are already present in the code. */
4114 b
->loc
->inserted
= 1;
4117 static struct breakpoint
*
4118 create_internal_breakpoint (CORE_ADDR address
, enum bptype type
)
4120 static int internal_breakpoint_number
= -1;
4121 struct symtab_and_line sal
;
4122 struct breakpoint
*b
;
4124 init_sal (&sal
); /* initialize to zeroes */
4127 sal
.section
= find_pc_overlay (sal
.pc
);
4129 b
= set_raw_breakpoint (sal
, type
);
4130 b
->number
= internal_breakpoint_number
--;
4131 b
->disposition
= disp_donttouch
;
4138 create_longjmp_breakpoint (char *func_name
)
4140 struct breakpoint
*b
;
4141 struct minimal_symbol
*m
;
4143 if (func_name
== NULL
)
4144 b
= create_internal_breakpoint (0, bp_longjmp_resume
);
4147 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4150 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
), bp_longjmp
);
4153 b
->enable_state
= bp_disabled
;
4156 b
->addr_string
= xstrdup (func_name
);
4159 /* Call this routine when stepping and nexting to enable a breakpoint
4160 if we do a longjmp(). When we hit that breakpoint, call
4161 set_longjmp_resume_breakpoint() to figure out where we are going. */
4164 enable_longjmp_breakpoint (void)
4166 struct breakpoint
*b
;
4169 if (b
->type
== bp_longjmp
)
4171 b
->enable_state
= bp_enabled
;
4172 check_duplicates (b
);
4177 disable_longjmp_breakpoint (void)
4179 struct breakpoint
*b
;
4182 if (b
->type
== bp_longjmp
4183 || b
->type
== bp_longjmp_resume
)
4185 b
->enable_state
= bp_disabled
;
4186 check_duplicates (b
);
4191 create_overlay_event_breakpoint (char *func_name
)
4193 struct breakpoint
*b
;
4194 struct minimal_symbol
*m
;
4196 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4199 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
),
4201 b
->addr_string
= xstrdup (func_name
);
4203 if (overlay_debugging
== ovly_auto
)
4205 b
->enable_state
= bp_enabled
;
4206 overlay_events_enabled
= 1;
4210 b
->enable_state
= bp_disabled
;
4211 overlay_events_enabled
= 0;
4216 enable_overlay_breakpoints (void)
4218 struct breakpoint
*b
;
4221 if (b
->type
== bp_overlay_event
)
4223 b
->enable_state
= bp_enabled
;
4224 check_duplicates (b
);
4225 overlay_events_enabled
= 1;
4230 disable_overlay_breakpoints (void)
4232 struct breakpoint
*b
;
4235 if (b
->type
== bp_overlay_event
)
4237 b
->enable_state
= bp_disabled
;
4238 check_duplicates (b
);
4239 overlay_events_enabled
= 0;
4244 create_thread_event_breakpoint (CORE_ADDR address
)
4246 struct breakpoint
*b
;
4248 b
= create_internal_breakpoint (address
, bp_thread_event
);
4250 b
->enable_state
= bp_enabled
;
4251 /* addr_string has to be used or breakpoint_re_set will delete me. */
4252 xasprintf (&b
->addr_string
, "*0x%s", paddr (b
->loc
->address
));
4258 remove_thread_event_breakpoints (void)
4260 struct breakpoint
*b
, *temp
;
4262 ALL_BREAKPOINTS_SAFE (b
, temp
)
4263 if (b
->type
== bp_thread_event
)
4264 delete_breakpoint (b
);
4267 struct captured_parse_breakpoint_args
4270 struct symtabs_and_lines
*sals_p
;
4271 char ***addr_string_p
;
4275 struct lang_and_radix
4281 /* Cleanup helper routine to restore the current language and
4284 do_restore_lang_radix_cleanup (void *old
)
4286 struct lang_and_radix
*p
= old
;
4287 set_language (p
->lang
);
4288 input_radix
= p
->radix
;
4291 /* Try and resolve a pending breakpoint. */
4293 resolve_pending_breakpoint (struct breakpoint
*b
)
4295 /* Try and reparse the breakpoint in case the shared library
4297 struct symtabs_and_lines sals
;
4298 struct symtab_and_line pending_sal
;
4299 char **cond_string
= (char **) NULL
;
4300 char *copy_arg
= b
->addr_string
;
4305 struct ui_file
*old_gdb_stderr
;
4306 struct lang_and_radix old_lr
;
4307 struct cleanup
*old_chain
;
4309 /* Set language, input-radix, then reissue breakpoint command.
4310 Ensure the language and input-radix are restored afterwards. */
4311 old_lr
.lang
= current_language
->la_language
;
4312 old_lr
.radix
= input_radix
;
4313 old_chain
= make_cleanup (do_restore_lang_radix_cleanup
, &old_lr
);
4315 set_language (b
->language
);
4316 input_radix
= b
->input_radix
;
4317 rc
= break_command_1 (b
->addr_string
, b
->flag
, b
->from_tty
, b
);
4319 if (rc
== GDB_RC_OK
)
4320 /* Pending breakpoint has been resolved. */
4321 printf_filtered ("Pending breakpoint \"%s\" resolved\n", b
->addr_string
);
4323 do_cleanups (old_chain
);
4329 remove_solib_event_breakpoints (void)
4331 struct breakpoint
*b
, *temp
;
4333 ALL_BREAKPOINTS_SAFE (b
, temp
)
4334 if (b
->type
== bp_shlib_event
)
4335 delete_breakpoint (b
);
4339 create_solib_event_breakpoint (CORE_ADDR address
)
4341 struct breakpoint
*b
;
4343 b
= create_internal_breakpoint (address
, bp_shlib_event
);
4347 /* Disable any breakpoints that are on code in shared libraries. Only
4348 apply to enabled breakpoints, disabled ones can just stay disabled. */
4351 disable_breakpoints_in_shlibs (int silent
)
4353 struct breakpoint
*b
;
4354 int disabled_shlib_breaks
= 0;
4356 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
4359 #if defined (PC_SOLIB)
4360 if (((b
->type
== bp_breakpoint
) ||
4361 (b
->type
== bp_hardware_breakpoint
)) &&
4362 breakpoint_enabled (b
) &&
4363 !b
->loc
->duplicate
&&
4364 PC_SOLIB (b
->loc
->address
))
4366 b
->enable_state
= bp_shlib_disabled
;
4369 if (!disabled_shlib_breaks
)
4371 target_terminal_ours_for_output ();
4372 warning ("Temporarily disabling shared library breakpoints:");
4374 disabled_shlib_breaks
= 1;
4375 warning ("breakpoint #%d ", b
->number
);
4382 /* Try to reenable any breakpoints in shared libraries. */
4384 re_enable_breakpoints_in_shlibs (void)
4386 struct breakpoint
*b
, *tmp
;
4388 ALL_BREAKPOINTS_SAFE (b
, tmp
)
4390 if (b
->enable_state
== bp_shlib_disabled
)
4394 /* Do not reenable the breakpoint if the shared library
4395 is still not mapped in. */
4396 lib
= PC_SOLIB (b
->loc
->address
);
4397 if (lib
!= NULL
&& target_read_memory (b
->loc
->address
, buf
, 1) == 0)
4398 b
->enable_state
= bp_enabled
;
4400 else if (b
->pending
&& (b
->enable_state
== bp_enabled
))
4402 if (resolve_pending_breakpoint (b
) == GDB_RC_OK
)
4403 delete_breakpoint (b
);
4411 solib_load_unload_1 (char *hookname
, int tempflag
, char *dll_pathname
,
4412 char *cond_string
, enum bptype bp_kind
)
4414 struct breakpoint
*b
;
4415 struct symtabs_and_lines sals
;
4416 struct cleanup
*old_chain
;
4417 struct cleanup
*canonical_strings_chain
= NULL
;
4418 char *addr_start
= hookname
;
4419 char *addr_end
= NULL
;
4420 char **canonical
= (char **) NULL
;
4421 int thread
= -1; /* All threads. */
4423 /* Set a breakpoint on the specified hook. */
4424 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
, 0, &canonical
, NULL
);
4425 addr_end
= hookname
;
4427 if (sals
.nelts
== 0)
4429 warning ("Unable to set a breakpoint on dynamic linker callback.");
4430 warning ("Suggest linking with /opt/langtools/lib/end.o.");
4431 warning ("GDB will be unable to track shl_load/shl_unload calls");
4434 if (sals
.nelts
!= 1)
4436 warning ("Unable to set unique breakpoint on dynamic linker callback.");
4437 warning ("GDB will be unable to track shl_load/shl_unload calls");
4441 /* Make sure that all storage allocated in decode_line_1 gets freed
4442 in case the following errors out. */
4443 old_chain
= make_cleanup (xfree
, sals
.sals
);
4444 if (canonical
!= (char **) NULL
)
4446 make_cleanup (xfree
, canonical
);
4447 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4448 if (canonical
[0] != NULL
)
4449 make_cleanup (xfree
, canonical
[0]);
4452 resolve_sal_pc (&sals
.sals
[0]);
4454 /* Remove the canonical strings from the cleanup, they are needed below. */
4455 if (canonical
!= (char **) NULL
)
4456 discard_cleanups (canonical_strings_chain
);
4458 b
= set_raw_breakpoint (sals
.sals
[0], bp_kind
);
4459 set_breakpoint_count (breakpoint_count
+ 1);
4460 b
->number
= breakpoint_count
;
4462 b
->cond_string
= (cond_string
== NULL
) ?
4463 NULL
: savestring (cond_string
, strlen (cond_string
));
4466 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
4467 b
->addr_string
= canonical
[0];
4468 else if (addr_start
)
4469 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4471 b
->enable_state
= bp_enabled
;
4472 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4474 if (dll_pathname
== NULL
)
4475 b
->dll_pathname
= NULL
;
4478 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
4479 strcpy (b
->dll_pathname
, dll_pathname
);
4483 do_cleanups (old_chain
);
4487 create_solib_load_event_breakpoint (char *hookname
, int tempflag
,
4488 char *dll_pathname
, char *cond_string
)
4490 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4491 cond_string
, bp_catch_load
);
4495 create_solib_unload_event_breakpoint (char *hookname
, int tempflag
,
4496 char *dll_pathname
, char *cond_string
)
4498 solib_load_unload_1 (hookname
,tempflag
, dll_pathname
,
4499 cond_string
, bp_catch_unload
);
4503 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4504 enum bptype bp_kind
)
4506 struct symtab_and_line sal
;
4507 struct breakpoint
*b
;
4508 int thread
= -1; /* All threads. */
4515 b
= set_raw_breakpoint (sal
, bp_kind
);
4516 set_breakpoint_count (breakpoint_count
+ 1);
4517 b
->number
= breakpoint_count
;
4519 b
->cond_string
= (cond_string
== NULL
) ?
4520 NULL
: savestring (cond_string
, strlen (cond_string
));
4522 b
->addr_string
= NULL
;
4523 b
->enable_state
= bp_enabled
;
4524 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4525 b
->forked_inferior_pid
= 0;
4531 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4533 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4537 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4539 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4543 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4545 struct symtab_and_line sal
;
4546 struct breakpoint
*b
;
4547 int thread
= -1; /* All threads. */
4554 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4555 set_breakpoint_count (breakpoint_count
+ 1);
4556 b
->number
= breakpoint_count
;
4558 b
->cond_string
= (cond_string
== NULL
) ?
4559 NULL
: savestring (cond_string
, strlen (cond_string
));
4561 b
->addr_string
= NULL
;
4562 b
->enable_state
= bp_enabled
;
4563 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4569 hw_breakpoint_used_count (void)
4571 struct breakpoint
*b
;
4576 if (b
->type
== bp_hardware_breakpoint
&& b
->enable_state
== bp_enabled
)
4584 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4586 struct breakpoint
*b
;
4589 *other_type_used
= 0;
4592 if (breakpoint_enabled (b
))
4594 if (b
->type
== type
)
4596 else if ((b
->type
== bp_hardware_watchpoint
||
4597 b
->type
== bp_read_watchpoint
||
4598 b
->type
== bp_access_watchpoint
))
4599 *other_type_used
= 1;
4605 /* Call this after hitting the longjmp() breakpoint. Use this to set
4606 a new breakpoint at the target of the jmp_buf.
4608 FIXME - This ought to be done by setting a temporary breakpoint
4609 that gets deleted automatically... */
4612 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_id frame_id
)
4614 struct breakpoint
*b
;
4617 if (b
->type
== bp_longjmp_resume
)
4619 b
->loc
->requested_address
= pc
;
4620 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4622 b
->enable_state
= bp_enabled
;
4623 b
->frame_id
= frame_id
;
4624 check_duplicates (b
);
4630 disable_watchpoints_before_interactive_call_start (void)
4632 struct breakpoint
*b
;
4636 if (((b
->type
== bp_watchpoint
)
4637 || (b
->type
== bp_hardware_watchpoint
)
4638 || (b
->type
== bp_read_watchpoint
)
4639 || (b
->type
== bp_access_watchpoint
)
4640 || ep_is_exception_catchpoint (b
))
4641 && breakpoint_enabled (b
))
4643 b
->enable_state
= bp_call_disabled
;
4644 check_duplicates (b
);
4650 enable_watchpoints_after_interactive_call_stop (void)
4652 struct breakpoint
*b
;
4656 if (((b
->type
== bp_watchpoint
)
4657 || (b
->type
== bp_hardware_watchpoint
)
4658 || (b
->type
== bp_read_watchpoint
)
4659 || (b
->type
== bp_access_watchpoint
)
4660 || ep_is_exception_catchpoint (b
))
4661 && (b
->enable_state
== bp_call_disabled
))
4663 b
->enable_state
= bp_enabled
;
4664 check_duplicates (b
);
4670 /* Set a breakpoint that will evaporate an end of command
4671 at address specified by SAL.
4672 Restrict it to frame FRAME if FRAME is nonzero. */
4675 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_id frame_id
,
4678 struct breakpoint
*b
;
4679 b
= set_raw_breakpoint (sal
, type
);
4680 b
->enable_state
= bp_enabled
;
4681 b
->disposition
= disp_donttouch
;
4682 b
->frame_id
= frame_id
;
4684 /* If we're debugging a multi-threaded program, then we
4685 want momentary breakpoints to be active in only a
4686 single thread of control. */
4687 if (in_thread_list (inferior_ptid
))
4688 b
->thread
= pid_to_thread_id (inferior_ptid
);
4694 /* Tell the user we have just set a breakpoint B. */
4697 mention (struct breakpoint
*b
)
4700 struct cleanup
*old_chain
, *ui_out_chain
;
4701 struct ui_stream
*stb
;
4703 stb
= ui_out_stream_new (uiout
);
4704 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4706 /* FIXME: This is misplaced; mention() is called by things (like
4707 hitting a watchpoint) other than breakpoint creation. It should
4708 be possible to clean this up and at the same time replace the
4709 random calls to breakpoint_changed with this hook, as has already
4710 been done for deprecated_delete_breakpoint_hook and so on. */
4711 if (deprecated_create_breakpoint_hook
)
4712 deprecated_create_breakpoint_hook (b
);
4713 breakpoint_create_event (b
->number
);
4715 if (b
->ops
!= NULL
&& b
->ops
->print_mention
!= NULL
)
4716 b
->ops
->print_mention (b
);
4721 printf_filtered ("(apparently deleted?) Eventpoint %d: ", b
->number
);
4724 ui_out_text (uiout
, "Watchpoint ");
4725 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4726 ui_out_field_int (uiout
, "number", b
->number
);
4727 ui_out_text (uiout
, ": ");
4728 print_expression (b
->exp
, stb
->stream
);
4729 ui_out_field_stream (uiout
, "exp", stb
);
4730 do_cleanups (ui_out_chain
);
4732 case bp_hardware_watchpoint
:
4733 ui_out_text (uiout
, "Hardware watchpoint ");
4734 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4735 ui_out_field_int (uiout
, "number", b
->number
);
4736 ui_out_text (uiout
, ": ");
4737 print_expression (b
->exp
, stb
->stream
);
4738 ui_out_field_stream (uiout
, "exp", stb
);
4739 do_cleanups (ui_out_chain
);
4741 case bp_read_watchpoint
:
4742 ui_out_text (uiout
, "Hardware read watchpoint ");
4743 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-rwpt");
4744 ui_out_field_int (uiout
, "number", b
->number
);
4745 ui_out_text (uiout
, ": ");
4746 print_expression (b
->exp
, stb
->stream
);
4747 ui_out_field_stream (uiout
, "exp", stb
);
4748 do_cleanups (ui_out_chain
);
4750 case bp_access_watchpoint
:
4751 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4752 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-awpt");
4753 ui_out_field_int (uiout
, "number", b
->number
);
4754 ui_out_text (uiout
, ": ");
4755 print_expression (b
->exp
, stb
->stream
);
4756 ui_out_field_stream (uiout
, "exp", stb
);
4757 do_cleanups (ui_out_chain
);
4760 if (ui_out_is_mi_like_p (uiout
))
4765 printf_filtered ("Breakpoint %d", b
->number
);
4768 case bp_hardware_breakpoint
:
4769 if (ui_out_is_mi_like_p (uiout
))
4774 printf_filtered ("Hardware assisted breakpoint %d", b
->number
);
4778 case bp_catch_unload
:
4779 printf_filtered ("Catchpoint %d (%s %s)",
4781 (b
->type
== bp_catch_load
) ? "load" : "unload",
4782 (b
->dll_pathname
!= NULL
) ?
4783 b
->dll_pathname
: "<any library>");
4786 case bp_catch_vfork
:
4787 printf_filtered ("Catchpoint %d (%s)",
4789 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4792 printf_filtered ("Catchpoint %d (exec)",
4795 case bp_catch_catch
:
4796 case bp_catch_throw
:
4797 printf_filtered ("Catchpoint %d (%s)",
4799 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
4805 case bp_longjmp_resume
:
4806 case bp_step_resume
:
4807 case bp_through_sigtramp
:
4809 case bp_watchpoint_scope
:
4810 case bp_shlib_event
:
4811 case bp_thread_event
:
4812 case bp_overlay_event
:
4820 printf_filtered (" (%s) pending.", b
->addr_string
);
4824 if (addressprint
|| b
->source_file
== NULL
)
4826 printf_filtered (" at ");
4827 print_address_numeric (b
->loc
->address
, 1, gdb_stdout
);
4830 printf_filtered (": file %s, line %d.",
4831 b
->source_file
, b
->line_number
);
4834 do_cleanups (old_chain
);
4835 if (ui_out_is_mi_like_p (uiout
))
4837 printf_filtered ("\n");
4841 /* Add SALS.nelts breakpoints to the breakpoint table. For each
4842 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
4843 COND[i] and COND_STRING[i] values.
4845 The parameter PENDING_BP points to a pending breakpoint that is
4846 the basis of the breakpoints currently being created. The pending
4847 breakpoint may contain a separate condition string or commands
4848 that were added after the initial pending breakpoint was created.
4850 NOTE: If the function succeeds, the caller is expected to cleanup
4851 the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
4852 array contents). If the function fails (error() is called), the
4853 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
4854 COND and SALS arrays and each of those arrays contents. */
4857 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
4858 struct expression
**cond
, char **cond_string
,
4859 enum bptype type
, enum bpdisp disposition
,
4860 int thread
, int ignore_count
, int from_tty
,
4861 struct breakpoint
*pending_bp
)
4863 if (type
== bp_hardware_breakpoint
)
4865 int i
= hw_breakpoint_used_count ();
4866 int target_resources_ok
=
4867 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4869 if (target_resources_ok
== 0)
4870 error ("No hardware breakpoint support in the target.");
4871 else if (target_resources_ok
< 0)
4872 error ("Hardware breakpoints used exceeds limit.");
4875 /* Now set all the breakpoints. */
4878 for (i
= 0; i
< sals
.nelts
; i
++)
4880 struct breakpoint
*b
;
4881 struct symtab_and_line sal
= sals
.sals
[i
];
4884 describe_other_breakpoints (sal
.pc
, sal
.section
);
4886 b
= set_raw_breakpoint (sal
, type
);
4887 set_breakpoint_count (breakpoint_count
+ 1);
4888 b
->number
= breakpoint_count
;
4892 b
->addr_string
= addr_string
[i
];
4894 /* addr_string has to be used or breakpoint_re_set will delete
4896 xasprintf (&b
->addr_string
, "*0x%s", paddr (b
->loc
->address
));
4897 b
->cond_string
= cond_string
[i
];
4898 b
->ignore_count
= ignore_count
;
4899 b
->enable_state
= bp_enabled
;
4900 b
->disposition
= disposition
;
4901 /* If resolving a pending breakpoint, a check must be made to see if
4902 the user has specified a new condition or commands for the
4903 breakpoint. A new condition will override any condition that was
4904 initially specified with the initial breakpoint command. */
4908 if (pending_bp
->cond_string
)
4910 arg
= pending_bp
->cond_string
;
4911 b
->cond_string
= savestring (arg
, strlen (arg
));
4912 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->loc
->address
), 0);
4914 error ("Junk at end of pending breakpoint condition expression");
4916 /* If there are commands associated with the breakpoint, they should
4918 if (pending_bp
->commands
)
4919 b
->commands
= copy_command_lines (pending_bp
->commands
);
4921 /* We have to copy over the ignore_count and thread as well. */
4922 b
->ignore_count
= pending_bp
->ignore_count
;
4923 b
->thread
= pending_bp
->thread
;
4930 /* Parse ARG which is assumed to be a SAL specification possibly
4931 followed by conditionals. On return, SALS contains an array of SAL
4932 addresses found. ADDR_STRING contains a vector of (canonical)
4933 address strings. ARG points to the end of the SAL. */
4936 parse_breakpoint_sals (char **address
,
4937 struct symtabs_and_lines
*sals
,
4938 char ***addr_string
,
4941 char *addr_start
= *address
;
4942 *addr_string
= NULL
;
4943 /* If no arg given, or if first arg is 'if ', use the default
4945 if ((*address
) == NULL
4946 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
4948 if (default_breakpoint_valid
)
4950 struct symtab_and_line sal
;
4951 init_sal (&sal
); /* initialize to zeroes */
4952 sals
->sals
= (struct symtab_and_line
*)
4953 xmalloc (sizeof (struct symtab_and_line
));
4954 sal
.pc
= default_breakpoint_address
;
4955 sal
.line
= default_breakpoint_line
;
4956 sal
.symtab
= default_breakpoint_symtab
;
4957 sal
.section
= find_pc_overlay (sal
.pc
);
4958 sals
->sals
[0] = sal
;
4962 error ("No default breakpoint address now.");
4966 /* Force almost all breakpoints to be in terms of the
4967 current_source_symtab (which is decode_line_1's default). This
4968 should produce the results we want almost all of the time while
4969 leaving default_breakpoint_* alone.
4970 ObjC: However, don't match an Objective-C method name which
4971 may have a '+' or '-' succeeded by a '[' */
4973 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
4975 if (default_breakpoint_valid
4977 || ((strchr ("+-", (*address
)[0]) != NULL
)
4978 && ((*address
)[1] != '['))))
4979 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
4980 default_breakpoint_line
, addr_string
,
4983 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0,
4984 addr_string
, not_found_ptr
);
4986 /* For any SAL that didn't have a canonical string, fill one in. */
4987 if (sals
->nelts
> 0 && *addr_string
== NULL
)
4988 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
4989 if (addr_start
!= (*address
))
4992 for (i
= 0; i
< sals
->nelts
; i
++)
4994 /* Add the string if not present. */
4995 if ((*addr_string
)[i
] == NULL
)
4996 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
5002 /* Convert each SAL into a real PC. Verify that the PC can be
5003 inserted as a breakpoint. If it can't throw an error. */
5006 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
5010 for (i
= 0; i
< sals
->nelts
; i
++)
5012 resolve_sal_pc (&sals
->sals
[i
]);
5014 /* It's possible for the PC to be nonzero, but still an illegal
5015 value on some targets.
5017 For example, on HP-UX if you start gdb, and before running the
5018 inferior you try to set a breakpoint on a shared library function
5019 "foo" where the inferior doesn't call "foo" directly but does
5020 pass its address to another function call, then we do find a
5021 minimal symbol for the "foo", but it's address is invalid.
5022 (Appears to be an index into a table that the loader sets up
5023 when the inferior is run.)
5025 Give the target a chance to bless sals.sals[i].pc before we
5026 try to make a breakpoint for it. */
5027 if (PC_REQUIRES_RUN_BEFORE_USE (sals
->sals
[i
].pc
))
5029 if (address
== NULL
)
5030 error ("Cannot break without a running program.");
5032 error ("Cannot break on %s without a running program.",
5039 do_captured_parse_breakpoint (struct ui_out
*ui
, void *data
)
5041 struct captured_parse_breakpoint_args
*args
= data
;
5043 parse_breakpoint_sals (args
->arg_p
, args
->sals_p
, args
->addr_string_p
,
5044 args
->not_found_ptr
);
5049 /* Set a breakpoint according to ARG (function, linenum or *address)
5050 flag: first bit : 0 non-temporary, 1 temporary.
5051 second bit : 0 normal breakpoint, 1 hardware breakpoint.
5053 PENDING_BP is non-NULL when this function is being called to resolve
5054 a pending breakpoint. */
5057 break_command_1 (char *arg
, int flag
, int from_tty
, struct breakpoint
*pending_bp
)
5059 int tempflag
, hardwareflag
;
5060 struct symtabs_and_lines sals
;
5061 struct expression
**cond
= 0;
5062 struct symtab_and_line pending_sal
;
5063 char **cond_string
= (char **) NULL
;
5066 char *addr_start
= arg
;
5068 struct cleanup
*old_chain
;
5069 struct cleanup
*breakpoint_chain
= NULL
;
5070 struct captured_parse_breakpoint_args parse_args
;
5074 int ignore_count
= 0;
5077 hardwareflag
= flag
& BP_HARDWAREFLAG
;
5078 tempflag
= flag
& BP_TEMPFLAG
;
5084 parse_args
.arg_p
= &arg
;
5085 parse_args
.sals_p
= &sals
;
5086 parse_args
.addr_string_p
= &addr_string
;
5087 parse_args
.not_found_ptr
= ¬_found
;
5089 rc
= catch_exceptions_with_msg (uiout
, do_captured_parse_breakpoint
,
5090 &parse_args
, NULL
, &err_msg
,
5093 /* If caller is interested in rc value from parse, set value. */
5095 if (rc
!= GDB_RC_OK
)
5097 /* Check for file or function not found. */
5100 /* If called to resolve pending breakpoint, just return error code. */
5104 error_output_message (NULL
, err_msg
);
5107 /* If pending breakpoint support is turned off, throw error. */
5109 if (pending_break_support
== AUTO_BOOLEAN_FALSE
)
5110 throw_exception (RETURN_ERROR
);
5112 /* If pending breakpoint support is auto query and the user selects
5113 no, then simply return the error code. */
5114 if (pending_break_support
== AUTO_BOOLEAN_AUTO
&&
5115 !nquery ("Make breakpoint pending on future shared library load? "))
5118 /* At this point, either the user was queried about setting a
5119 pending breakpoint and selected yes, or pending breakpoint
5120 behavior is on and thus a pending breakpoint is defaulted
5121 on behalf of the user. */
5122 copy_arg
= xstrdup (addr_start
);
5123 addr_string
= ©_arg
;
5125 sals
.sals
= &pending_sal
;
5132 else if (!sals
.nelts
)
5135 /* Create a chain of things that always need to be cleaned up. */
5136 old_chain
= make_cleanup (null_cleanup
, 0);
5140 /* Make sure that all storage allocated to SALS gets freed. */
5141 make_cleanup (xfree
, sals
.sals
);
5143 /* Cleanup the addr_string array but not its contents. */
5144 make_cleanup (xfree
, addr_string
);
5147 /* Allocate space for all the cond expressions. */
5148 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
5149 make_cleanup (xfree
, cond
);
5151 /* Allocate space for all the cond strings. */
5152 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
5153 make_cleanup (xfree
, cond_string
);
5155 /* ----------------------------- SNIP -----------------------------
5156 Anything added to the cleanup chain beyond this point is assumed
5157 to be part of a breakpoint. If the breakpoint create succeeds
5158 then the memory is not reclaimed. */
5159 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5161 /* Mark the contents of the addr_string for cleanup. These go on
5162 the breakpoint_chain and only occure if the breakpoint create
5164 for (i
= 0; i
< sals
.nelts
; i
++)
5166 if (addr_string
[i
] != NULL
)
5167 make_cleanup (xfree
, addr_string
[i
]);
5170 /* Resolve all line numbers to PC's and verify that the addresses
5171 are ok for the target. */
5173 breakpoint_sals_to_pc (&sals
, addr_start
);
5175 /* Verify that condition can be parsed, before setting any
5176 breakpoints. Allocate a separate condition expression for each
5178 thread
= -1; /* No specific thread yet */
5181 for (i
= 0; i
< sals
.nelts
; i
++)
5188 char *cond_start
= NULL
;
5189 char *cond_end
= NULL
;
5190 while (*tok
== ' ' || *tok
== '\t')
5195 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5198 toklen
= end_tok
- tok
;
5200 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5202 tok
= cond_start
= end_tok
+ 1;
5203 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
),
5205 make_cleanup (xfree
, cond
[i
]);
5207 cond_string
[i
] = savestring (cond_start
,
5208 cond_end
- cond_start
);
5209 make_cleanup (xfree
, cond_string
[i
]);
5211 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
5217 thread
= strtol (tok
, &tok
, 0);
5219 error ("Junk after thread keyword.");
5220 if (!valid_thread_id (thread
))
5221 error ("Unknown thread %d\n", thread
);
5224 error ("Junk at end of arguments.");
5227 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
5228 hardwareflag
? bp_hardware_breakpoint
5230 tempflag
? disp_del
: disp_donttouch
,
5231 thread
, ignore_count
, from_tty
,
5236 struct symtab_and_line sal
;
5237 struct breakpoint
*b
;
5242 make_cleanup (xfree
, copy_arg
);
5244 b
= set_raw_breakpoint (sal
, hardwareflag
? bp_hardware_breakpoint
5246 set_breakpoint_count (breakpoint_count
+ 1);
5247 b
->number
= breakpoint_count
;
5250 b
->addr_string
= *addr_string
;
5251 b
->cond_string
= *cond_string
;
5252 b
->ignore_count
= ignore_count
;
5254 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
5255 b
->from_tty
= from_tty
;
5262 warning ("Multiple breakpoints were set.");
5263 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5265 /* That's it. Discard the cleanups for data inserted into the
5267 discard_cleanups (breakpoint_chain
);
5268 /* But cleanup everything else. */
5269 do_cleanups (old_chain
);
5274 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
5275 linenum or *address) with COND and IGNORE_COUNT. */
5277 struct captured_breakpoint_args
5288 do_captured_breakpoint (void *data
)
5290 struct captured_breakpoint_args
*args
= data
;
5291 struct symtabs_and_lines sals
;
5292 struct expression
**cond
;
5293 struct cleanup
*old_chain
;
5294 struct cleanup
*breakpoint_chain
= NULL
;
5301 /* Parse the source and lines spec. Delay check that the expression
5302 didn't contain trailing garbage until after cleanups are in
5306 address_end
= args
->address
;
5308 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
, 0);
5313 /* Create a chain of things at always need to be cleaned up. */
5314 old_chain
= make_cleanup (null_cleanup
, 0);
5316 /* Always have a addr_string array, even if it is empty. */
5317 make_cleanup (xfree
, addr_string
);
5319 /* Make sure that all storage allocated to SALS gets freed. */
5320 make_cleanup (xfree
, sals
.sals
);
5322 /* Allocate space for all the cond expressions. */
5323 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
5324 make_cleanup (xfree
, cond
);
5326 /* Allocate space for all the cond strings. */
5327 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
5328 make_cleanup (xfree
, cond_string
);
5330 /* ----------------------------- SNIP -----------------------------
5331 Anything added to the cleanup chain beyond this point is assumed
5332 to be part of a breakpoint. If the breakpoint create goes
5333 through then that memory is not cleaned up. */
5334 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5336 /* Mark the contents of the addr_string for cleanup. These go on
5337 the breakpoint_chain and only occure if the breakpoint create
5339 for (i
= 0; i
< sals
.nelts
; i
++)
5341 if (addr_string
[i
] != NULL
)
5342 make_cleanup (xfree
, addr_string
[i
]);
5345 /* Wait until now before checking for garbage at the end of the
5346 address. That way cleanups can take care of freeing any
5348 if (*address_end
!= '\0')
5349 error ("Garbage %s following breakpoint address", address_end
);
5351 /* Resolve all line numbers to PC's. */
5352 breakpoint_sals_to_pc (&sals
, args
->address
);
5354 /* Verify that conditions can be parsed, before setting any
5356 for (i
= 0; i
< sals
.nelts
; i
++)
5358 if (args
->condition
!= NULL
)
5360 char *tok
= args
->condition
;
5361 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
5363 error ("Garbage %s follows condition", tok
);
5364 make_cleanup (xfree
, cond
[i
]);
5365 cond_string
[i
] = xstrdup (args
->condition
);
5369 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
5370 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
5371 args
->tempflag
? disp_del
: disp_donttouch
,
5372 args
->thread
, args
->ignore_count
, 0/*from-tty*/,
5373 NULL
/*pending_bp*/);
5375 /* That's it. Discard the cleanups for data inserted into the
5377 discard_cleanups (breakpoint_chain
);
5378 /* But cleanup everything else. */
5379 do_cleanups (old_chain
);
5384 gdb_breakpoint (char *address
, char *condition
,
5385 int hardwareflag
, int tempflag
,
5386 int thread
, int ignore_count
)
5388 struct captured_breakpoint_args args
;
5389 args
.address
= address
;
5390 args
.condition
= condition
;
5391 args
.hardwareflag
= hardwareflag
;
5392 args
.tempflag
= tempflag
;
5393 args
.thread
= thread
;
5394 args
.ignore_count
= ignore_count
;
5395 return catch_errors (do_captured_breakpoint
, &args
,
5396 NULL
, RETURN_MASK_ALL
);
5401 break_at_finish_at_depth_command_1 (char *arg
, int flag
, int from_tty
)
5403 struct frame_info
*frame
;
5404 CORE_ADDR low
, high
, selected_pc
= 0;
5405 char *extra_args
= NULL
;
5407 int extra_args_len
= 0, if_arg
= 0;
5410 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5413 if (default_breakpoint_valid
)
5415 if (deprecated_selected_frame
)
5417 selected_pc
= get_frame_pc (deprecated_selected_frame
);
5422 error ("No selected frame.");
5425 error ("No default breakpoint address now.");
5429 extra_args
= strchr (arg
, ' ');
5433 extra_args_len
= strlen (extra_args
);
5434 level_arg
= (char *) xmalloc (extra_args
- arg
);
5435 strncpy (level_arg
, arg
, extra_args
- arg
- 1);
5436 level_arg
[extra_args
- arg
- 1] = '\0';
5440 level_arg
= (char *) xmalloc (strlen (arg
) + 1);
5441 strcpy (level_arg
, arg
);
5444 frame
= parse_frame_specification (level_arg
);
5446 selected_pc
= get_frame_pc (frame
);
5453 extra_args_len
= strlen (arg
);
5458 if (find_pc_partial_function (selected_pc
, (char **) NULL
, &low
, &high
))
5462 addr_string
= xstrprintf ("*0x%s %s", paddr_nz (high
), extra_args
);
5464 addr_string
= xstrprintf ("*0x%s", paddr_nz (high
));
5465 break_command_1 (addr_string
, flag
, from_tty
, NULL
);
5466 xfree (addr_string
);
5469 error ("No function contains the specified address");
5472 error ("Unable to set breakpoint at procedure exit");
5477 break_at_finish_command_1 (char *arg
, int flag
, int from_tty
)
5479 char *addr_string
, *break_string
, *beg_addr_string
;
5480 CORE_ADDR low
, high
;
5481 struct symtabs_and_lines sals
;
5482 struct symtab_and_line sal
;
5483 struct cleanup
*old_chain
;
5484 char *extra_args
= NULL
;
5485 int extra_args_len
= 0;
5489 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5491 if (default_breakpoint_valid
)
5493 if (deprecated_selected_frame
)
5495 addr_string
= xstrprintf ("*0x%s",
5496 paddr_nz (get_frame_pc (deprecated_selected_frame
)));
5501 error ("No selected frame.");
5504 error ("No default breakpoint address now.");
5508 addr_string
= (char *) xmalloc (strlen (arg
) + 1);
5509 strcpy (addr_string
, arg
);
5515 extra_args_len
= strlen (arg
);
5519 /* get the stuff after the function name or address */
5520 extra_args
= strchr (arg
, ' ');
5524 extra_args_len
= strlen (extra_args
);
5531 beg_addr_string
= addr_string
;
5532 sals
= decode_line_1 (&addr_string
, 1, (struct symtab
*) NULL
, 0,
5533 (char ***) NULL
, NULL
);
5535 xfree (beg_addr_string
);
5536 old_chain
= make_cleanup (xfree
, sals
.sals
);
5537 for (i
= 0; (i
< sals
.nelts
); i
++)
5540 if (find_pc_partial_function (sal
.pc
, (char **) NULL
, &low
, &high
))
5544 break_string
= xstrprintf ("*0x%s %s", paddr_nz (high
),
5547 break_string
= xstrprintf ("*0x%s", paddr_nz (high
));
5548 break_command_1 (break_string
, flag
, from_tty
, NULL
);
5549 xfree (break_string
);
5552 error ("No function contains the specified address");
5556 warning ("Multiple breakpoints were set.\n");
5557 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5559 do_cleanups (old_chain
);
5563 /* Helper function for break_command_1 and disassemble_command. */
5566 resolve_sal_pc (struct symtab_and_line
*sal
)
5570 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5572 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5573 error ("No line %d in file \"%s\".",
5574 sal
->line
, sal
->symtab
->filename
);
5578 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5580 struct blockvector
*bv
;
5585 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
5588 b
= BLOCKVECTOR_BLOCK (bv
, index
);
5589 sym
= block_function (b
);
5592 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5593 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5597 /* It really is worthwhile to have the section, so we'll just
5598 have to look harder. This case can be executed if we have
5599 line numbers but no functions (as can happen in assembly
5602 struct minimal_symbol
*msym
;
5604 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5606 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5613 break_command (char *arg
, int from_tty
)
5615 break_command_1 (arg
, 0, from_tty
, NULL
);
5619 break_at_finish_command (char *arg
, int from_tty
)
5621 break_at_finish_command_1 (arg
, 0, from_tty
);
5625 break_at_finish_at_depth_command (char *arg
, int from_tty
)
5627 break_at_finish_at_depth_command_1 (arg
, 0, from_tty
);
5631 tbreak_command (char *arg
, int from_tty
)
5633 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
, NULL
);
5637 tbreak_at_finish_command (char *arg
, int from_tty
)
5639 break_at_finish_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5643 hbreak_command (char *arg
, int from_tty
)
5645 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
, NULL
);
5649 thbreak_command (char *arg
, int from_tty
)
5651 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
, NULL
);
5655 stop_command (char *arg
, int from_tty
)
5657 printf_filtered ("Specify the type of breakpoint to set.\n\
5658 Usage: stop in <function | address>\n\
5663 stopin_command (char *arg
, int from_tty
)
5667 if (arg
== (char *) NULL
)
5669 else if (*arg
!= '*')
5674 /* look for a ':'. If this is a line number specification, then
5675 say it is bad, otherwise, it should be an address or
5676 function/method name */
5677 while (*argptr
&& !hasColon
)
5679 hasColon
= (*argptr
== ':');
5684 badInput
= (*argptr
!= ':'); /* Not a class::method */
5686 badInput
= isdigit (*arg
); /* a simple line number */
5690 printf_filtered ("Usage: stop in <function | address>\n");
5692 break_command_1 (arg
, 0, from_tty
, NULL
);
5696 stopat_command (char *arg
, int from_tty
)
5700 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5707 /* look for a ':'. If there is a '::' then get out, otherwise
5708 it is probably a line number. */
5709 while (*argptr
&& !hasColon
)
5711 hasColon
= (*argptr
== ':');
5716 badInput
= (*argptr
== ':'); /* we have class::method */
5718 badInput
= !isdigit (*arg
); /* not a line number */
5722 printf_filtered ("Usage: stop at <line>\n");
5724 break_command_1 (arg
, 0, from_tty
, NULL
);
5727 /* accessflag: hw_write: watch write,
5728 hw_read: watch read,
5729 hw_access: watch access (read or write) */
5731 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5733 struct breakpoint
*b
;
5734 struct symtab_and_line sal
;
5735 struct expression
*exp
;
5736 struct block
*exp_valid_block
;
5737 struct value
*val
, *mark
;
5738 struct frame_info
*frame
;
5739 struct frame_info
*prev_frame
= NULL
;
5740 char *exp_start
= NULL
;
5741 char *exp_end
= NULL
;
5742 char *tok
, *end_tok
;
5744 char *cond_start
= NULL
;
5745 char *cond_end
= NULL
;
5746 struct expression
*cond
= NULL
;
5747 int i
, other_type_used
, target_resources_ok
= 0;
5748 enum bptype bp_type
;
5751 init_sal (&sal
); /* initialize to zeroes */
5753 /* Parse arguments. */
5754 innermost_block
= NULL
;
5756 exp
= parse_exp_1 (&arg
, 0, 0);
5758 exp_valid_block
= innermost_block
;
5759 mark
= value_mark ();
5760 val
= evaluate_expression (exp
);
5761 release_value (val
);
5762 if (VALUE_LAZY (val
))
5763 value_fetch_lazy (val
);
5766 while (*tok
== ' ' || *tok
== '\t')
5770 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5773 toklen
= end_tok
- tok
;
5774 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5776 tok
= cond_start
= end_tok
+ 1;
5777 cond
= parse_exp_1 (&tok
, 0, 0);
5781 error ("Junk at end of command.");
5783 if (accessflag
== hw_read
)
5784 bp_type
= bp_read_watchpoint
;
5785 else if (accessflag
== hw_access
)
5786 bp_type
= bp_access_watchpoint
;
5788 bp_type
= bp_hardware_watchpoint
;
5790 mem_cnt
= can_use_hardware_watchpoint (val
);
5791 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5792 error ("Expression cannot be implemented with read/access watchpoint.");
5795 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5796 target_resources_ok
=
5797 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5799 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5800 error ("Target does not support this type of hardware watchpoint.");
5802 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5803 error ("Target can only support one kind of HW watchpoint at a time.");
5806 #if defined(HPUXHPPA)
5807 /* On HP-UX if you set a h/w
5808 watchpoint before the "run" command, the inferior dies with a e.g.,
5809 SIGILL once you start it. I initially believed this was due to a
5810 bad interaction between page protection traps and the initial
5811 startup sequence by the dynamic linker.
5813 However, I tried avoiding that by having HP-UX's implementation of
5814 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid
5815 yet, which forced slow watches before a "run" or "attach", and it
5816 still fails somewhere in the startup code.
5818 Until I figure out what's happening, I'm disallowing watches altogether
5819 before the "run" or "attach" command. We'll tell the user they must
5820 set watches after getting the program started. */
5821 if (!target_has_execution
)
5823 warning ("can't do that without a running program; try \"break main\", \"run\" first");
5826 #endif /* HPUXHPPA */
5828 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5829 watchpoint could not be set. */
5830 if (!mem_cnt
|| target_resources_ok
<= 0)
5831 bp_type
= bp_watchpoint
;
5833 /* Now set up the breakpoint. */
5834 b
= set_raw_breakpoint (sal
, bp_type
);
5835 set_breakpoint_count (breakpoint_count
+ 1);
5836 b
->number
= breakpoint_count
;
5837 b
->disposition
= disp_donttouch
;
5839 b
->exp_valid_block
= exp_valid_block
;
5840 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5844 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5848 frame
= block_innermost_frame (exp_valid_block
);
5851 prev_frame
= get_prev_frame (frame
);
5852 b
->watchpoint_frame
= get_frame_id (frame
);
5856 memset (&b
->watchpoint_frame
, 0, sizeof (b
->watchpoint_frame
));
5859 /* If the expression is "local", then set up a "watchpoint scope"
5860 breakpoint at the point where we've left the scope of the watchpoint
5862 if (innermost_block
)
5866 struct breakpoint
*scope_breakpoint
;
5867 scope_breakpoint
= create_internal_breakpoint (get_frame_pc (prev_frame
),
5868 bp_watchpoint_scope
);
5870 scope_breakpoint
->enable_state
= bp_enabled
;
5872 /* Automatically delete the breakpoint when it hits. */
5873 scope_breakpoint
->disposition
= disp_del
;
5875 /* Only break in the proper frame (help with recursion). */
5876 scope_breakpoint
->frame_id
= get_frame_id (prev_frame
);
5878 /* Set the address at which we will stop. */
5879 scope_breakpoint
->loc
->requested_address
5880 = get_frame_pc (prev_frame
);
5881 scope_breakpoint
->loc
->address
5882 = adjust_breakpoint_address (scope_breakpoint
->loc
->requested_address
,
5883 scope_breakpoint
->type
);
5885 /* The scope breakpoint is related to the watchpoint. We
5886 will need to act on them together. */
5887 b
->related_breakpoint
= scope_breakpoint
;
5890 value_free_to_mark (mark
);
5894 /* Return count of locations need to be watched and can be handled
5895 in hardware. If the watchpoint can not be handled
5896 in hardware return zero. */
5898 #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
5899 #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
5900 (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN))
5904 can_use_hardware_watchpoint (struct value
*v
)
5906 int found_memory_cnt
= 0;
5907 struct value
*head
= v
;
5909 /* Did the user specifically forbid us to use hardware watchpoints? */
5910 if (!can_use_hw_watchpoints
)
5913 /* Make sure that the value of the expression depends only upon
5914 memory contents, and values computed from them within GDB. If we
5915 find any register references or function calls, we can't use a
5916 hardware watchpoint.
5918 The idea here is that evaluating an expression generates a series
5919 of values, one holding the value of every subexpression. (The
5920 expression a*b+c has five subexpressions: a, b, a*b, c, and
5921 a*b+c.) GDB's values hold almost enough information to establish
5922 the criteria given above --- they identify memory lvalues,
5923 register lvalues, computed values, etcetera. So we can evaluate
5924 the expression, and then scan the chain of values that leaves
5925 behind to decide whether we can detect any possible change to the
5926 expression's final value using only hardware watchpoints.
5928 However, I don't think that the values returned by inferior
5929 function calls are special in any way. So this function may not
5930 notice that an expression involving an inferior function call
5931 can't be watched with hardware watchpoints. FIXME. */
5932 for (; v
; v
= v
->next
)
5934 if (VALUE_LVAL (v
) == lval_memory
)
5937 /* A lazy memory lvalue is one that GDB never needed to fetch;
5938 we either just used its address (e.g., `a' in `a.b') or
5939 we never needed it at all (e.g., `a' in `a,b'). */
5943 /* Ahh, memory we actually used! Check if we can cover
5944 it with hardware watchpoints. */
5945 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
5947 /* We only watch structs and arrays if user asked for it
5948 explicitly, never if they just happen to appear in a
5949 middle of some value chain. */
5951 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5952 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5954 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
5955 int len
= TYPE_LENGTH (VALUE_TYPE (v
));
5957 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5964 else if (v
->lval
!= not_lval
&& v
->modifiable
== 0)
5965 return 0; /* ??? What does this represent? */
5966 else if (v
->lval
== lval_register
)
5967 return 0; /* cannot watch a register with a HW watchpoint */
5970 /* The expression itself looks suitable for using a hardware
5971 watchpoint, but give the target machine a chance to reject it. */
5972 return found_memory_cnt
;
5976 watch_command_wrapper (char *arg
, int from_tty
)
5978 watch_command (arg
, from_tty
);
5982 watch_command (char *arg
, int from_tty
)
5984 watch_command_1 (arg
, hw_write
, from_tty
);
5988 rwatch_command_wrapper (char *arg
, int from_tty
)
5990 rwatch_command (arg
, from_tty
);
5994 rwatch_command (char *arg
, int from_tty
)
5996 watch_command_1 (arg
, hw_read
, from_tty
);
6000 awatch_command_wrapper (char *arg
, int from_tty
)
6002 awatch_command (arg
, from_tty
);
6006 awatch_command (char *arg
, int from_tty
)
6008 watch_command_1 (arg
, hw_access
, from_tty
);
6012 /* Helper routines for the until_command routine in infcmd.c. Here
6013 because it uses the mechanisms of breakpoints. */
6015 /* This function is called by fetch_inferior_event via the
6016 cmd_continuation pointer, to complete the until command. It takes
6017 care of cleaning up the temporary breakpoints set up by the until
6020 until_break_command_continuation (struct continuation_arg
*arg
)
6022 struct cleanup
*cleanups
;
6024 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
6025 do_exec_cleanups (cleanups
);
6029 until_break_command (char *arg
, int from_tty
, int anywhere
)
6031 struct symtabs_and_lines sals
;
6032 struct symtab_and_line sal
;
6033 struct frame_info
*prev_frame
= get_prev_frame (deprecated_selected_frame
);
6034 struct breakpoint
*breakpoint
;
6035 struct cleanup
*old_chain
;
6036 struct continuation_arg
*arg1
;
6039 clear_proceed_status ();
6041 /* Set a breakpoint where the user wants it and at return from
6044 if (default_breakpoint_valid
)
6045 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
6046 default_breakpoint_line
, (char ***) NULL
, NULL
);
6048 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
6049 0, (char ***) NULL
, NULL
);
6051 if (sals
.nelts
!= 1)
6052 error ("Couldn't get information on specified line.");
6055 xfree (sals
.sals
); /* malloc'd, so freed */
6058 error ("Junk at end of arguments.");
6060 resolve_sal_pc (&sal
);
6063 /* If the user told us to continue until a specified location,
6064 we don't specify a frame at which we need to stop. */
6065 breakpoint
= set_momentary_breakpoint (sal
, null_frame_id
, bp_until
);
6067 /* Otherwise, specify the current frame, because we want to stop only
6068 at the very same frame. */
6069 breakpoint
= set_momentary_breakpoint (sal
,
6070 get_frame_id (deprecated_selected_frame
),
6073 if (!event_loop_p
|| !target_can_async_p ())
6074 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
6076 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
6078 /* If we are running asynchronously, and the target supports async
6079 execution, we are not waiting for the target to stop, in the call
6080 tp proceed, below. This means that we cannot delete the
6081 brekpoints until the target has actually stopped. The only place
6082 where we get a chance to do that is in fetch_inferior_event, so
6083 we must set things up for that. */
6085 if (event_loop_p
&& target_can_async_p ())
6087 /* In this case the arg for the continuation is just the point
6088 in the exec_cleanups chain from where to start doing
6089 cleanups, because all the continuation does is the cleanups in
6090 the exec_cleanup_chain. */
6092 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
6094 arg1
->data
.pointer
= old_chain
;
6096 add_continuation (until_break_command_continuation
, arg1
);
6099 /* Keep within the current frame, or in frames called by the current
6103 sal
= find_pc_line (get_frame_pc (prev_frame
), 0);
6104 sal
.pc
= get_frame_pc (prev_frame
);
6105 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (prev_frame
),
6107 if (!event_loop_p
|| !target_can_async_p ())
6108 make_cleanup_delete_breakpoint (breakpoint
);
6110 make_exec_cleanup_delete_breakpoint (breakpoint
);
6113 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
6114 /* Do the cleanups now, anly if we are not running asynchronously,
6115 of if we are, but the target is still synchronous. */
6116 if (!event_loop_p
|| !target_can_async_p ())
6117 do_cleanups (old_chain
);
6121 ep_skip_leading_whitespace (char **s
)
6123 if ((s
== NULL
) || (*s
== NULL
))
6125 while (isspace (**s
))
6129 /* This function examines a string, and attempts to find a token
6130 that might be an event name in the leading characters. If a
6131 possible match is found, a pointer to the last character of
6132 the token is returned. Else, NULL is returned. */
6135 ep_find_event_name_end (char *arg
)
6138 char *event_name_end
= NULL
;
6140 /* If we could depend upon the presense of strrpbrk, we'd use that... */
6144 /* We break out of the loop when we find a token delimiter.
6145 Basically, we're looking for alphanumerics and underscores;
6146 anything else delimites the token. */
6149 if (!isalnum (*s
) && (*s
!= '_'))
6155 return event_name_end
;
6159 /* This function attempts to parse an optional "if <cond>" clause
6160 from the arg string. If one is not found, it returns NULL.
6162 Else, it returns a pointer to the condition string. (It does not
6163 attempt to evaluate the string against a particular block.) And,
6164 it updates arg to point to the first character following the parsed
6165 if clause in the arg string. */
6168 ep_parse_optional_if_clause (char **arg
)
6172 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
6175 /* Skip the "if" keyword. */
6178 /* Skip any extra leading whitespace, and record the start of the
6179 condition string. */
6180 ep_skip_leading_whitespace (arg
);
6183 /* Assume that the condition occupies the remainder of the arg string. */
6184 (*arg
) += strlen (cond_string
);
6189 /* This function attempts to parse an optional filename from the arg
6190 string. If one is not found, it returns NULL.
6192 Else, it returns a pointer to the parsed filename. (This function
6193 makes no attempt to verify that a file of that name exists, or is
6194 accessible.) And, it updates arg to point to the first character
6195 following the parsed filename in the arg string.
6197 Note that clients needing to preserve the returned filename for
6198 future access should copy it to their own buffers. */
6200 ep_parse_optional_filename (char **arg
)
6202 static char filename
[1024];
6207 if ((*arg_p
== '\0') || isspace (*arg_p
))
6225 /* Commands to deal with catching events, such as signals, exceptions,
6226 process start/exit, etc. */
6230 catch_fork
, catch_vfork
6235 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6238 char *cond_string
= NULL
;
6240 ep_skip_leading_whitespace (&arg
);
6242 /* The allowed syntax is:
6244 catch [v]fork if <cond>
6246 First, check if there's an if clause. */
6247 cond_string
= ep_parse_optional_if_clause (&arg
);
6249 if ((*arg
!= '\0') && !isspace (*arg
))
6250 error ("Junk at end of arguments.");
6252 /* If this target supports it, create a fork or vfork catchpoint
6253 and enable reporting of such events. */
6257 create_fork_event_catchpoint (tempflag
, cond_string
);
6260 create_vfork_event_catchpoint (tempflag
, cond_string
);
6263 error ("unsupported or unknown fork kind; cannot catch it");
6269 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6271 char *cond_string
= NULL
;
6273 ep_skip_leading_whitespace (&arg
);
6275 /* The allowed syntax is:
6277 catch exec if <cond>
6279 First, check if there's an if clause. */
6280 cond_string
= ep_parse_optional_if_clause (&arg
);
6282 if ((*arg
!= '\0') && !isspace (*arg
))
6283 error ("Junk at end of arguments.");
6285 /* If this target supports it, create an exec catchpoint
6286 and enable reporting of such events. */
6287 create_exec_event_catchpoint (tempflag
, cond_string
);
6291 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6293 char *dll_pathname
= NULL
;
6294 char *cond_string
= NULL
;
6296 ep_skip_leading_whitespace (&arg
);
6298 /* The allowed syntax is:
6300 catch load if <cond>
6301 catch load <filename>
6302 catch load <filename> if <cond>
6304 The user is not allowed to specify the <filename> after an
6307 We'll ignore the pathological case of a file named "if".
6309 First, check if there's an if clause. If so, then there
6310 cannot be a filename. */
6311 cond_string
= ep_parse_optional_if_clause (&arg
);
6313 /* If there was an if clause, then there cannot be a filename.
6314 Else, there might be a filename and an if clause. */
6315 if (cond_string
== NULL
)
6317 dll_pathname
= ep_parse_optional_filename (&arg
);
6318 ep_skip_leading_whitespace (&arg
);
6319 cond_string
= ep_parse_optional_if_clause (&arg
);
6322 if ((*arg
!= '\0') && !isspace (*arg
))
6323 error ("Junk at end of arguments.");
6325 /* Create a load breakpoint that only triggers when a load of
6326 the specified dll (or any dll, if no pathname was specified)
6328 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6329 dll_pathname
, cond_string
);
6333 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6335 char *dll_pathname
= NULL
;
6336 char *cond_string
= NULL
;
6338 ep_skip_leading_whitespace (&arg
);
6340 /* The allowed syntax is:
6342 catch unload if <cond>
6343 catch unload <filename>
6344 catch unload <filename> if <cond>
6346 The user is not allowed to specify the <filename> after an
6349 We'll ignore the pathological case of a file named "if".
6351 First, check if there's an if clause. If so, then there
6352 cannot be a filename. */
6353 cond_string
= ep_parse_optional_if_clause (&arg
);
6355 /* If there was an if clause, then there cannot be a filename.
6356 Else, there might be a filename and an if clause. */
6357 if (cond_string
== NULL
)
6359 dll_pathname
= ep_parse_optional_filename (&arg
);
6360 ep_skip_leading_whitespace (&arg
);
6361 cond_string
= ep_parse_optional_if_clause (&arg
);
6364 if ((*arg
!= '\0') && !isspace (*arg
))
6365 error ("Junk at end of arguments.");
6367 /* Create an unload breakpoint that only triggers when an unload of
6368 the specified dll (or any dll, if no pathname was specified)
6370 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6371 dll_pathname
, cond_string
);
6374 /* Commands to deal with catching exceptions. */
6376 /* Set a breakpoint at the specified callback routine for an
6377 exception event callback */
6380 create_exception_catchpoint (int tempflag
, char *cond_string
,
6381 enum exception_event_kind ex_event
,
6382 struct symtab_and_line
*sal
)
6384 struct breakpoint
*b
;
6385 int thread
= -1; /* All threads. */
6388 if (!sal
) /* no exception support? */
6393 case EX_EVENT_THROW
:
6394 bptype
= bp_catch_throw
;
6396 case EX_EVENT_CATCH
:
6397 bptype
= bp_catch_catch
;
6399 default: /* error condition */
6400 error ("Internal error -- invalid catchpoint kind");
6403 b
= set_raw_breakpoint (*sal
, bptype
);
6404 set_breakpoint_count (breakpoint_count
+ 1);
6405 b
->number
= breakpoint_count
;
6407 b
->cond_string
= (cond_string
== NULL
) ?
6408 NULL
: savestring (cond_string
, strlen (cond_string
));
6410 b
->addr_string
= NULL
;
6411 b
->enable_state
= bp_enabled
;
6412 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6416 static enum print_stop_action
6417 print_exception_catchpoint (struct breakpoint
*b
)
6419 annotate_catchpoint (b
->number
);
6421 if (strstr (b
->addr_string
, "throw") != NULL
)
6422 printf_filtered ("\nCatchpoint %d (exception thrown)\n",
6425 printf_filtered ("\nCatchpoint %d (exception caught)\n",
6428 return PRINT_SRC_AND_LOC
;
6432 print_one_exception_catchpoint (struct breakpoint
*b
, CORE_ADDR
*last_addr
)
6437 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
6440 *last_addr
= b
->loc
->address
;
6441 if (strstr (b
->addr_string
, "throw") != NULL
)
6442 ui_out_field_string (uiout
, "what", "exception throw");
6444 ui_out_field_string (uiout
, "what", "exception catch");
6448 print_mention_exception_catchpoint (struct breakpoint
*b
)
6450 if (strstr (b
->addr_string
, "throw") != NULL
)
6451 printf_filtered ("Catchpoint %d (throw)", b
->number
);
6453 printf_filtered ("Catchpoint %d (catch)", b
->number
);
6456 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops
= {
6457 print_exception_catchpoint
,
6458 print_one_exception_catchpoint
,
6459 print_mention_exception_catchpoint
6463 handle_gnu_v3_exceptions (int tempflag
, char *cond_string
,
6464 enum exception_event_kind ex_event
, int from_tty
)
6466 char *trigger_func_name
, *nameptr
;
6467 struct symtabs_and_lines sals
;
6468 struct breakpoint
*b
;
6470 if (ex_event
== EX_EVENT_CATCH
)
6471 trigger_func_name
= xstrdup ("__cxa_begin_catch");
6473 trigger_func_name
= xstrdup ("__cxa_throw");
6475 nameptr
= trigger_func_name
;
6476 sals
= decode_line_1 (&nameptr
, 1, NULL
, 0, NULL
, NULL
);
6477 if (sals
.nelts
== 0)
6479 xfree (trigger_func_name
);
6483 b
= set_raw_breakpoint (sals
.sals
[0], bp_breakpoint
);
6484 set_breakpoint_count (breakpoint_count
+ 1);
6485 b
->number
= breakpoint_count
;
6487 b
->cond_string
= (cond_string
== NULL
) ?
6488 NULL
: savestring (cond_string
, strlen (cond_string
));
6490 b
->addr_string
= trigger_func_name
;
6491 b
->enable_state
= bp_enabled
;
6492 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6493 b
->ops
= &gnu_v3_exception_catchpoint_ops
;
6500 /* Deal with "catch catch" and "catch throw" commands */
6503 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6504 int tempflag
, int from_tty
)
6506 char *cond_string
= NULL
;
6507 struct symtab_and_line
*sal
= NULL
;
6509 ep_skip_leading_whitespace (&arg
);
6511 cond_string
= ep_parse_optional_if_clause (&arg
);
6513 if ((*arg
!= '\0') && !isspace (*arg
))
6514 error ("Junk at end of arguments.");
6516 if ((ex_event
!= EX_EVENT_THROW
) &&
6517 (ex_event
!= EX_EVENT_CATCH
))
6518 error ("Unsupported or unknown exception event; cannot catch it");
6520 if (handle_gnu_v3_exceptions (tempflag
, cond_string
, ex_event
, from_tty
))
6523 /* See if we can find a callback routine */
6524 sal
= target_enable_exception_callback (ex_event
, 1);
6528 /* We have callbacks from the runtime system for exceptions.
6529 Set a breakpoint on the sal found, if no errors */
6530 if (sal
!= (struct symtab_and_line
*) -1)
6531 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
6533 return; /* something went wrong with setting up callbacks */
6536 warning ("Unsupported with this platform/compiler combination.");
6539 /* Cover routine to allow wrapping target_enable_exception_catchpoints
6540 inside a catch_errors */
6543 cover_target_enable_exception_callback (void *arg
)
6545 args_for_catchpoint_enable
*args
= arg
;
6546 struct symtab_and_line
*sal
;
6547 sal
= target_enable_exception_callback (args
->kind
, args
->enable_p
);
6550 else if (sal
== (struct symtab_and_line
*) -1)
6553 return 1; /*is valid */
6557 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6560 /* The first argument may be an event name, such as "start" or "load".
6561 If so, then handle it as such. If it doesn't match an event name,
6562 then attempt to interpret it as an exception name. (This latter is
6563 the v4.16-and-earlier GDB meaning of the "catch" command.)
6565 First, try to find the bounds of what might be an event name. */
6566 char *arg1_start
= arg
;
6570 if (arg1_start
== NULL
)
6572 /* Old behaviour was to use pre-v-4.16 syntax */
6573 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6575 /* Now, this is not allowed */
6576 error ("Catch requires an event name.");
6579 arg1_end
= ep_find_event_name_end (arg1_start
);
6580 if (arg1_end
== NULL
)
6581 error ("catch requires an event");
6582 arg1_length
= arg1_end
+ 1 - arg1_start
;
6584 /* Try to match what we found against known event names. */
6585 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6587 error ("Catch of signal not yet implemented");
6589 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6591 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6592 tempflag
, from_tty
);
6594 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6596 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6597 tempflag
, from_tty
);
6599 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6601 error ("Catch of thread_start not yet implemented");
6603 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6605 error ("Catch of thread_exit not yet implemented");
6607 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6609 error ("Catch of thread_join not yet implemented");
6611 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6613 error ("Catch of start not yet implemented");
6615 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6617 error ("Catch of exit not yet implemented");
6619 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6621 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6623 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6625 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6627 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6629 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6631 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6633 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6635 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6637 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6639 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6641 error ("Catch of stop not yet implemented");
6644 /* This doesn't appear to be an event name */
6648 /* Pre-v.4.16 behaviour was to treat the argument
6649 as the name of an exception */
6650 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6651 /* Now this is not allowed */
6652 error ("Unknown event kind specified for catch");
6657 /* Used by the gui, could be made a worker for other things. */
6660 set_breakpoint_sal (struct symtab_and_line sal
)
6662 struct breakpoint
*b
;
6663 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6664 set_breakpoint_count (breakpoint_count
+ 1);
6665 b
->number
= breakpoint_count
;
6672 catch_command (char *arg
, int from_tty
)
6674 catch_command_1 (arg
, 0, from_tty
);
6679 tcatch_command (char *arg
, int from_tty
)
6681 catch_command_1 (arg
, 1, from_tty
);
6684 /* Delete breakpoints by address or line. */
6687 clear_command (char *arg
, int from_tty
)
6689 struct breakpoint
*b
, *tmp
, *prev
, *found
;
6691 struct symtabs_and_lines sals
;
6692 struct symtab_and_line sal
;
6697 sals
= decode_line_spec (arg
, 1);
6702 sals
.sals
= (struct symtab_and_line
*)
6703 xmalloc (sizeof (struct symtab_and_line
));
6704 make_cleanup (xfree
, sals
.sals
);
6705 init_sal (&sal
); /* initialize to zeroes */
6706 sal
.line
= default_breakpoint_line
;
6707 sal
.symtab
= default_breakpoint_symtab
;
6708 sal
.pc
= default_breakpoint_address
;
6709 if (sal
.symtab
== 0)
6710 error ("No source file specified.");
6718 /* For each line spec given, delete bps which correspond
6719 to it. Do it in two passes, solely to preserve the current
6720 behavior that from_tty is forced true if we delete more than
6724 for (i
= 0; i
< sals
.nelts
; i
++)
6726 /* If exact pc given, clear bpts at that pc.
6727 If line given (pc == 0), clear all bpts on specified line.
6728 If defaulting, clear all bpts on default line
6731 defaulting sal.pc != 0 tests to do
6736 1 0 <can't happen> */
6741 /* Find all matching breakpoints, remove them from the
6742 breakpoint chain, and add them to the 'found' chain. */
6743 ALL_BREAKPOINTS_SAFE (b
, tmp
)
6745 /* Are we going to delete b? */
6746 if (b
->type
!= bp_none
6747 && b
->type
!= bp_watchpoint
6748 && b
->type
!= bp_hardware_watchpoint
6749 && b
->type
!= bp_read_watchpoint
6750 && b
->type
!= bp_access_watchpoint
6751 /* Not if b is a watchpoint of any sort... */
6752 && (((sal
.pc
&& (b
->loc
->address
== sal
.pc
))
6753 && (!section_is_overlay (b
->loc
->section
)
6754 || b
->loc
->section
== sal
.section
))
6755 /* Yes, if sal.pc matches b (modulo overlays). */
6756 || ((default_match
|| (0 == sal
.pc
))
6757 && b
->source_file
!= NULL
6758 && sal
.symtab
!= NULL
6759 && strcmp (b
->source_file
, sal
.symtab
->filename
) == 0
6760 && b
->line_number
== sal
.line
)))
6761 /* Yes, if sal source file and line matches b. */
6763 /* Remove it from breakpoint_chain... */
6764 if (b
== breakpoint_chain
)
6766 /* b is at the head of the list */
6767 breakpoint_chain
= b
->next
;
6771 prev
->next
= b
->next
;
6773 /* And add it to 'found' chain. */
6779 /* Keep b, and keep a pointer to it. */
6784 /* Now go thru the 'found' chain and delete them. */
6788 error ("No breakpoint at %s.", arg
);
6790 error ("No breakpoint at this line.");
6794 from_tty
= 1; /* Always report if deleted more than one */
6796 printf_unfiltered ("Deleted breakpoint%s ", found
->next
? "s" : "");
6797 breakpoints_changed ();
6801 printf_unfiltered ("%d ", found
->number
);
6803 delete_breakpoint (found
);
6807 putchar_unfiltered ('\n');
6810 /* Delete breakpoint in BS if they are `delete' breakpoints and
6811 all breakpoints that are marked for deletion, whether hit or not.
6812 This is called after any breakpoint is hit, or after errors. */
6815 breakpoint_auto_delete (bpstat bs
)
6817 struct breakpoint
*b
, *temp
;
6819 for (; bs
; bs
= bs
->next
)
6820 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== disp_del
6822 delete_breakpoint (bs
->breakpoint_at
);
6824 ALL_BREAKPOINTS_SAFE (b
, temp
)
6826 if (b
->disposition
== disp_del_at_next_stop
)
6827 delete_breakpoint (b
);
6831 /* Delete a breakpoint and clean up all traces of it in the data
6835 delete_breakpoint (struct breakpoint
*bpt
)
6837 struct breakpoint
*b
;
6839 struct bp_location
*loc
;
6842 error ("Internal error (attempted to delete a NULL breakpoint)");
6845 /* Has this bp already been deleted? This can happen because multiple
6846 lists can hold pointers to bp's. bpstat lists are especial culprits.
6848 One example of this happening is a watchpoint's scope bp. When the
6849 scope bp triggers, we notice that the watchpoint is out of scope, and
6850 delete it. We also delete its scope bp. But the scope bp is marked
6851 "auto-deleting", and is already on a bpstat. That bpstat is then
6852 checked for auto-deleting bp's, which are deleted.
6854 A real solution to this problem might involve reference counts in bp's,
6855 and/or giving them pointers back to their referencing bpstat's, and
6856 teaching delete_breakpoint to only free a bp's storage when no more
6857 references were extent. A cheaper bandaid was chosen. */
6858 if (bpt
->type
== bp_none
)
6861 if (deprecated_delete_breakpoint_hook
)
6862 deprecated_delete_breakpoint_hook (bpt
);
6863 breakpoint_delete_event (bpt
->number
);
6865 if (bpt
->loc
->inserted
)
6866 remove_breakpoint (bpt
->loc
, mark_inserted
);
6868 free_valchain (bpt
->loc
);
6870 if (breakpoint_chain
== bpt
)
6871 breakpoint_chain
= bpt
->next
;
6873 if (bp_location_chain
== bpt
->loc
)
6874 bp_location_chain
= bpt
->loc
->next
;
6876 /* If we have callback-style exception catchpoints, don't go through
6877 the adjustments to the C++ runtime library etc. if the inferior
6878 isn't actually running. target_enable_exception_callback for a
6879 null target ops vector gives an undesirable error message, so we
6880 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
6881 exceptions are supported in this way, it's OK for now. FIXME */
6882 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
6884 /* Format possible error msg */
6885 char *message
= xstrprintf ("Error in deleting catchpoint %d:\n",
6887 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
6888 args_for_catchpoint_enable args
;
6889 args
.kind
= bpt
->type
== bp_catch_catch
?
6890 EX_EVENT_CATCH
: EX_EVENT_THROW
;
6892 catch_errors (cover_target_enable_exception_callback
, &args
,
6893 message
, RETURN_MASK_ALL
);
6894 do_cleanups (cleanups
);
6901 b
->next
= bpt
->next
;
6905 ALL_BP_LOCATIONS (loc
)
6906 if (loc
->next
== bpt
->loc
)
6908 loc
->next
= bpt
->loc
->next
;
6912 check_duplicates (bpt
);
6913 /* If this breakpoint was inserted, and there is another breakpoint
6914 at the same address, we need to insert the other breakpoint. */
6915 if (bpt
->loc
->inserted
6916 && bpt
->type
!= bp_hardware_watchpoint
6917 && bpt
->type
!= bp_read_watchpoint
6918 && bpt
->type
!= bp_access_watchpoint
6919 && bpt
->type
!= bp_catch_fork
6920 && bpt
->type
!= bp_catch_vfork
6921 && bpt
->type
!= bp_catch_exec
)
6924 if (b
->loc
->address
== bpt
->loc
->address
6925 && b
->loc
->section
== bpt
->loc
->section
6926 && !b
->loc
->duplicate
6927 && b
->enable_state
!= bp_disabled
6928 && b
->enable_state
!= bp_shlib_disabled
6930 && b
->enable_state
!= bp_call_disabled
)
6934 /* We should never reach this point if there is a permanent
6935 breakpoint at the same address as the one being deleted.
6936 If there is a permanent breakpoint somewhere, it should
6937 always be the only one inserted. */
6938 if (b
->enable_state
== bp_permanent
)
6939 internal_error (__FILE__
, __LINE__
,
6940 "another breakpoint was inserted on top of "
6941 "a permanent breakpoint");
6943 if (b
->type
== bp_hardware_breakpoint
)
6944 val
= target_insert_hw_breakpoint (b
->loc
->address
, b
->loc
->shadow_contents
);
6946 val
= target_insert_breakpoint (b
->loc
->address
, b
->loc
->shadow_contents
);
6948 /* If there was an error in the insert, print a message, then stop execution. */
6951 struct ui_file
*tmp_error_stream
= mem_fileopen ();
6952 make_cleanup_ui_file_delete (tmp_error_stream
);
6955 if (b
->type
== bp_hardware_breakpoint
)
6957 fprintf_unfiltered (tmp_error_stream
,
6958 "Cannot insert hardware breakpoint %d.\n"
6959 "You may have requested too many hardware breakpoints.\n",
6964 fprintf_unfiltered (tmp_error_stream
, "Cannot insert breakpoint %d.\n", b
->number
);
6965 fprintf_filtered (tmp_error_stream
, "Error accessing memory address ");
6966 print_address_numeric (b
->loc
->address
, 1, tmp_error_stream
);
6967 fprintf_filtered (tmp_error_stream
, ": %s.\n",
6968 safe_strerror (val
));
6971 fprintf_unfiltered (tmp_error_stream
,"The same program may be running in another process.");
6972 target_terminal_ours_for_output ();
6973 error_stream(tmp_error_stream
);
6976 b
->loc
->inserted
= 1;
6980 free_command_lines (&bpt
->commands
);
6983 if (bpt
->cond_string
!= NULL
)
6984 xfree (bpt
->cond_string
);
6985 if (bpt
->addr_string
!= NULL
)
6986 xfree (bpt
->addr_string
);
6987 if (bpt
->exp
!= NULL
)
6989 if (bpt
->exp_string
!= NULL
)
6990 xfree (bpt
->exp_string
);
6991 if (bpt
->val
!= NULL
)
6992 value_free (bpt
->val
);
6993 if (bpt
->source_file
!= NULL
)
6994 xfree (bpt
->source_file
);
6995 if (bpt
->dll_pathname
!= NULL
)
6996 xfree (bpt
->dll_pathname
);
6997 if (bpt
->triggered_dll_pathname
!= NULL
)
6998 xfree (bpt
->triggered_dll_pathname
);
6999 if (bpt
->exec_pathname
!= NULL
)
7000 xfree (bpt
->exec_pathname
);
7002 /* Be sure no bpstat's are pointing at it after it's been freed. */
7003 /* FIXME, how can we find all bpstat's?
7004 We just check stop_bpstat for now. */
7005 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
7006 if (bs
->breakpoint_at
== bpt
)
7008 bs
->breakpoint_at
= NULL
;
7010 /* bs->commands will be freed later. */
7012 /* On the chance that someone will soon try again to delete this same
7013 bp, we mark it as deleted before freeing its storage. */
7014 bpt
->type
= bp_none
;
7021 do_delete_breakpoint_cleanup (void *b
)
7023 delete_breakpoint (b
);
7027 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
7029 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
7033 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
7035 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
7039 delete_command (char *arg
, int from_tty
)
7041 struct breakpoint
*b
, *temp
;
7047 int breaks_to_delete
= 0;
7049 /* Delete all breakpoints if no argument.
7050 Do not delete internal or call-dummy breakpoints, these
7051 have to be deleted with an explicit breakpoint number argument. */
7054 if (b
->type
!= bp_call_dummy
&&
7055 b
->type
!= bp_shlib_event
&&
7056 b
->type
!= bp_thread_event
&&
7057 b
->type
!= bp_overlay_event
&&
7059 breaks_to_delete
= 1;
7062 /* Ask user only if there are some breakpoints to delete. */
7064 || (breaks_to_delete
&& query ("Delete all breakpoints? ")))
7066 ALL_BREAKPOINTS_SAFE (b
, temp
)
7068 if (b
->type
!= bp_call_dummy
&&
7069 b
->type
!= bp_shlib_event
&&
7070 b
->type
!= bp_thread_event
&&
7071 b
->type
!= bp_overlay_event
&&
7073 delete_breakpoint (b
);
7078 map_breakpoint_numbers (arg
, delete_breakpoint
);
7081 /* Reset a breakpoint given it's struct breakpoint * BINT.
7082 The value we return ends up being the return value from catch_errors.
7083 Unused in this case. */
7086 breakpoint_re_set_one (void *bint
)
7088 /* get past catch_errs */
7089 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7092 struct symtabs_and_lines sals
;
7094 enum enable_state save_enable
;
7099 warning ("attempted to reset apparently deleted breakpoint #%d?",
7103 case bp_hardware_breakpoint
:
7105 case bp_catch_unload
:
7106 if (b
->addr_string
== NULL
)
7108 /* Anything without a string can't be re-set. */
7109 delete_breakpoint (b
);
7112 /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote:
7114 ``And a hack it is, although Apple's Darwin version of GDB
7115 contains an almost identical hack to implement a "future
7116 break" command. It seems to work in many real world cases,
7117 but it is easy to come up with a test case where the patch
7118 doesn't help at all.''
7120 ``It seems that the way GDB implements breakpoints - in -
7121 shared - libraries was designed for a.out shared library
7122 systems (SunOS 4) where shared libraries were loaded at a
7123 fixed address in memory. Since ELF shared libraries can (and
7124 will) be loaded at any address in memory, things break.
7125 Fixing this is not trivial. Therefore, I'm not sure whether
7126 we should add this hack to the branch only. I cannot
7127 guarantee that things will be fixed on the trunk in the near
7130 In case we have a problem, disable this breakpoint. We'll
7131 restore its status if we succeed. Don't disable a
7132 shlib_disabled breakpoint though. There's a fair chance we
7133 can't re-set it if the shared library it's in hasn't been
7139 save_enable
= b
->enable_state
;
7140 if (b
->enable_state
!= bp_shlib_disabled
)
7141 b
->enable_state
= bp_disabled
;
7143 set_language (b
->language
);
7144 input_radix
= b
->input_radix
;
7146 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7147 for (i
= 0; i
< sals
.nelts
; i
++)
7149 resolve_sal_pc (&sals
.sals
[i
]);
7151 /* Reparse conditions, they might contain references to the
7153 if (b
->cond_string
!= NULL
)
7159 /* Avoid re-freeing b->exp if an error during the call
7163 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
7166 /* We need to re-set the breakpoint if the address changes... */
7167 if (b
->loc
->address
!= sals
.sals
[i
].pc
7168 /* ...or new and old breakpoints both have source files, and
7169 the source file name or the line number changes... */
7170 || (b
->source_file
!= NULL
7171 && sals
.sals
[i
].symtab
!= NULL
7172 && (strcmp (b
->source_file
, sals
.sals
[i
].symtab
->filename
) != 0
7173 || b
->line_number
!= sals
.sals
[i
].line
)
7175 /* ...or we switch between having a source file and not having
7177 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
7180 if (b
->source_file
!= NULL
)
7181 xfree (b
->source_file
);
7182 if (sals
.sals
[i
].symtab
== NULL
)
7183 b
->source_file
= NULL
;
7186 savestring (sals
.sals
[i
].symtab
->filename
,
7187 strlen (sals
.sals
[i
].symtab
->filename
));
7188 b
->line_number
= sals
.sals
[i
].line
;
7189 b
->loc
->requested_address
= sals
.sals
[i
].pc
;
7191 = adjust_breakpoint_address (b
->loc
->requested_address
,
7194 /* Used to check for duplicates here, but that can
7195 cause trouble, as it doesn't check for disabled
7200 /* Might be better to do this just once per breakpoint_re_set,
7201 rather than once for every breakpoint. */
7202 breakpoints_changed ();
7204 b
->loc
->section
= sals
.sals
[i
].section
;
7205 b
->enable_state
= save_enable
; /* Restore it, this worked. */
7208 /* Now that this is re-enabled, check_duplicates
7210 check_duplicates (b
);
7217 case bp_hardware_watchpoint
:
7218 case bp_read_watchpoint
:
7219 case bp_access_watchpoint
:
7220 innermost_block
= NULL
;
7221 /* The issue arises of what context to evaluate this in. The
7222 same one as when it was set, but what does that mean when
7223 symbols have been re-read? We could save the filename and
7224 functionname, but if the context is more local than that, the
7225 best we could do would be something like how many levels deep
7226 and which index at that particular level, but that's going to
7227 be less stable than filenames or function names. */
7229 /* So for now, just use a global context. */
7233 /* Avoid re-freeing b->exp if an error during the call to
7234 parse_expression. */
7237 b
->exp
= parse_expression (b
->exp_string
);
7238 b
->exp_valid_block
= innermost_block
;
7239 mark
= value_mark ();
7242 value_free (b
->val
);
7243 /* Avoid re-freeing b->val if an error during the call to
7244 evaluate_expression. */
7247 b
->val
= evaluate_expression (b
->exp
);
7248 release_value (b
->val
);
7249 if (VALUE_LAZY (b
->val
) && breakpoint_enabled (b
))
7250 value_fetch_lazy (b
->val
);
7252 if (b
->cond_string
!= NULL
)
7258 /* Avoid re-freeing b->exp if an error during the call
7262 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7264 if (breakpoint_enabled (b
))
7266 value_free_to_mark (mark
);
7268 case bp_catch_catch
:
7269 case bp_catch_throw
:
7271 /* We needn't really do anything to reset these, since the mask
7272 that requests them is unaffected by e.g., new libraries being
7275 case bp_catch_vfork
:
7280 printf_filtered ("Deleting unknown breakpoint type %d\n", b
->type
);
7282 /* Delete longjmp and overlay event breakpoints; they will be
7283 reset later by breakpoint_re_set. */
7285 case bp_longjmp_resume
:
7286 case bp_overlay_event
:
7287 delete_breakpoint (b
);
7290 /* This breakpoint is special, it's set up when the inferior
7291 starts and we really don't want to touch it. */
7292 case bp_shlib_event
:
7294 /* Like bp_shlib_event, this breakpoint type is special.
7295 Once it is set up, we do not want to touch it. */
7296 case bp_thread_event
:
7298 /* Keep temporary breakpoints, which can be encountered when we step
7299 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7300 Otherwise these should have been blown away via the cleanup chain
7301 or by breakpoint_init_inferior when we rerun the executable. */
7304 case bp_watchpoint_scope
:
7306 case bp_step_resume
:
7313 /* Re-set all breakpoints after symbols have been re-loaded. */
7315 breakpoint_re_set (void)
7317 struct breakpoint
*b
, *temp
;
7318 enum language save_language
;
7319 int save_input_radix
;
7321 save_language
= current_language
->la_language
;
7322 save_input_radix
= input_radix
;
7323 ALL_BREAKPOINTS_SAFE (b
, temp
)
7325 /* Format possible error msg */
7326 char *message
= xstrprintf ("Error in re-setting breakpoint %d:\n",
7328 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7329 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7330 do_cleanups (cleanups
);
7332 set_language (save_language
);
7333 input_radix
= save_input_radix
;
7335 if (GET_LONGJMP_TARGET_P ())
7337 create_longjmp_breakpoint ("longjmp");
7338 create_longjmp_breakpoint ("_longjmp");
7339 create_longjmp_breakpoint ("siglongjmp");
7340 create_longjmp_breakpoint ("_siglongjmp");
7341 create_longjmp_breakpoint (NULL
);
7344 create_overlay_event_breakpoint ("_ovly_debug_event");
7347 /* Reset the thread number of this breakpoint:
7349 - If the breakpoint is for all threads, leave it as-is.
7350 - Else, reset it to the current thread for inferior_ptid. */
7352 breakpoint_re_set_thread (struct breakpoint
*b
)
7354 if (b
->thread
!= -1)
7356 if (in_thread_list (inferior_ptid
))
7357 b
->thread
= pid_to_thread_id (inferior_ptid
);
7361 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7362 If from_tty is nonzero, it prints a message to that effect,
7363 which ends with a period (no newline). */
7366 set_ignore_count (int bptnum
, int count
, int from_tty
)
7368 struct breakpoint
*b
;
7374 if (b
->number
== bptnum
)
7376 b
->ignore_count
= count
;
7380 printf_filtered ("Will stop next time breakpoint %d is reached.",
7382 else if (count
== 1)
7383 printf_filtered ("Will ignore next crossing of breakpoint %d.",
7386 printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
7389 breakpoints_changed ();
7390 breakpoint_modify_event (b
->number
);
7394 error ("No breakpoint number %d.", bptnum
);
7397 /* Clear the ignore counts of all breakpoints. */
7399 breakpoint_clear_ignore_counts (void)
7401 struct breakpoint
*b
;
7404 b
->ignore_count
= 0;
7407 /* Command to set ignore-count of breakpoint N to COUNT. */
7410 ignore_command (char *args
, int from_tty
)
7416 error_no_arg ("a breakpoint number");
7418 num
= get_number (&p
);
7420 error ("bad breakpoint number: '%s'", args
);
7422 error ("Second argument (specified ignore-count) is missing.");
7424 set_ignore_count (num
,
7425 longest_to_int (value_as_long (parse_and_eval (p
))),
7428 printf_filtered ("\n");
7431 /* Call FUNCTION on each of the breakpoints
7432 whose numbers are given in ARGS. */
7435 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7440 struct breakpoint
*b
, *tmp
;
7444 error_no_arg ("one or more breakpoint numbers");
7451 num
= get_number_or_range (&p1
);
7454 warning ("bad breakpoint number at or near '%s'", p
);
7458 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7459 if (b
->number
== num
)
7461 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7464 if (related_breakpoint
)
7465 function (related_breakpoint
);
7469 printf_unfiltered ("No breakpoint number %d.\n", num
);
7475 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7476 If from_tty is nonzero, it prints a message to that effect,
7477 which ends with a period (no newline). */
7480 disable_breakpoint (struct breakpoint
*bpt
)
7482 /* Never disable a watchpoint scope breakpoint; we want to
7483 hit them when we leave scope so we can delete both the
7484 watchpoint and its scope breakpoint at that time. */
7485 if (bpt
->type
== bp_watchpoint_scope
)
7488 /* You can't disable permanent breakpoints. */
7489 if (bpt
->enable_state
== bp_permanent
)
7492 bpt
->enable_state
= bp_disabled
;
7494 check_duplicates (bpt
);
7496 if (deprecated_modify_breakpoint_hook
)
7497 deprecated_modify_breakpoint_hook (bpt
);
7498 breakpoint_modify_event (bpt
->number
);
7502 disable_command (char *args
, int from_tty
)
7504 struct breakpoint
*bpt
;
7506 ALL_BREAKPOINTS (bpt
)
7510 warning ("attempted to disable apparently deleted breakpoint #%d?",
7515 case bp_catch_unload
:
7517 case bp_catch_vfork
:
7519 case bp_catch_catch
:
7520 case bp_catch_throw
:
7521 case bp_hardware_breakpoint
:
7523 case bp_hardware_watchpoint
:
7524 case bp_read_watchpoint
:
7525 case bp_access_watchpoint
:
7526 disable_breakpoint (bpt
);
7531 map_breakpoint_numbers (args
, disable_breakpoint
);
7535 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7537 int target_resources_ok
, other_type_used
;
7540 if (bpt
->type
== bp_hardware_breakpoint
)
7543 i
= hw_breakpoint_used_count ();
7544 target_resources_ok
=
7545 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7547 if (target_resources_ok
== 0)
7548 error ("No hardware breakpoint support in the target.");
7549 else if (target_resources_ok
< 0)
7550 error ("Hardware breakpoints used exceeds limit.");
7555 if (bpt
->enable_state
!= bp_enabled
)
7557 /* When enabling a pending breakpoint, we need to check if the breakpoint
7558 is resolvable since shared libraries could have been loaded
7559 after the breakpoint was disabled. */
7560 breakpoints_changed ();
7561 if (resolve_pending_breakpoint (bpt
) == GDB_RC_OK
)
7563 delete_breakpoint (bpt
);
7566 bpt
->enable_state
= bp_enabled
;
7567 bpt
->disposition
= disposition
;
7570 else /* Not a pending breakpoint. */
7572 if (bpt
->enable_state
!= bp_permanent
)
7573 bpt
->enable_state
= bp_enabled
;
7574 bpt
->disposition
= disposition
;
7575 check_duplicates (bpt
);
7576 breakpoints_changed ();
7578 if (bpt
->type
== bp_watchpoint
||
7579 bpt
->type
== bp_hardware_watchpoint
||
7580 bpt
->type
== bp_read_watchpoint
||
7581 bpt
->type
== bp_access_watchpoint
)
7583 struct frame_id saved_frame_id
;
7585 saved_frame_id
= get_frame_id (get_selected_frame ());
7586 if (bpt
->exp_valid_block
!= NULL
)
7588 struct frame_info
*fr
=
7589 fr
= frame_find_by_id (bpt
->watchpoint_frame
);
7593 Cannot enable watchpoint %d because the block in which its expression\n\
7594 is valid is not currently in scope.\n", bpt
->number
);
7595 bpt
->enable_state
= bp_disabled
;
7601 value_free (bpt
->val
);
7602 mark
= value_mark ();
7603 bpt
->val
= evaluate_expression (bpt
->exp
);
7604 release_value (bpt
->val
);
7605 if (VALUE_LAZY (bpt
->val
))
7606 value_fetch_lazy (bpt
->val
);
7608 if (bpt
->type
== bp_hardware_watchpoint
||
7609 bpt
->type
== bp_read_watchpoint
||
7610 bpt
->type
== bp_access_watchpoint
)
7612 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7613 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7615 /* Hack around 'unused var' error for some targets here */
7617 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7618 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7619 /* we can consider of type is bp_hardware_watchpoint, convert to
7620 bp_watchpoint in the following condition */
7621 if (target_resources_ok
< 0)
7624 Cannot enable watchpoint %d because target watch resources\n\
7625 have been allocated for other watchpoints.\n", bpt
->number
);
7626 bpt
->enable_state
= bp_disabled
;
7627 value_free_to_mark (mark
);
7632 select_frame (frame_find_by_id (saved_frame_id
));
7633 value_free_to_mark (mark
);
7637 if (deprecated_modify_breakpoint_hook
)
7638 deprecated_modify_breakpoint_hook (bpt
);
7639 breakpoint_modify_event (bpt
->number
);
7643 enable_breakpoint (struct breakpoint
*bpt
)
7645 do_enable_breakpoint (bpt
, bpt
->disposition
);
7648 /* The enable command enables the specified breakpoints (or all defined
7649 breakpoints) so they once again become (or continue to be) effective
7650 in stopping the inferior. */
7653 enable_command (char *args
, int from_tty
)
7655 struct breakpoint
*bpt
;
7657 ALL_BREAKPOINTS (bpt
)
7661 warning ("attempted to enable apparently deleted breakpoint #%d?",
7666 case bp_catch_unload
:
7668 case bp_catch_vfork
:
7670 case bp_catch_catch
:
7671 case bp_catch_throw
:
7672 case bp_hardware_breakpoint
:
7674 case bp_hardware_watchpoint
:
7675 case bp_read_watchpoint
:
7676 case bp_access_watchpoint
:
7677 enable_breakpoint (bpt
);
7682 map_breakpoint_numbers (args
, enable_breakpoint
);
7686 enable_once_breakpoint (struct breakpoint
*bpt
)
7688 do_enable_breakpoint (bpt
, disp_disable
);
7692 enable_once_command (char *args
, int from_tty
)
7694 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7698 enable_delete_breakpoint (struct breakpoint
*bpt
)
7700 do_enable_breakpoint (bpt
, disp_del
);
7704 enable_delete_command (char *args
, int from_tty
)
7706 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7710 set_breakpoint_cmd (char *args
, int from_tty
)
7715 show_breakpoint_cmd (char *args
, int from_tty
)
7719 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7721 struct symtabs_and_lines
7722 decode_line_spec_1 (char *string
, int funfirstline
)
7724 struct symtabs_and_lines sals
;
7726 error ("Empty line specification.");
7727 if (default_breakpoint_valid
)
7728 sals
= decode_line_1 (&string
, funfirstline
,
7729 default_breakpoint_symtab
,
7730 default_breakpoint_line
,
7731 (char ***) NULL
, NULL
);
7733 sals
= decode_line_1 (&string
, funfirstline
,
7734 (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7736 error ("Junk at end of line specification: %s", string
);
7741 _initialize_breakpoint (void)
7743 static struct cmd_list_element
*breakpoint_set_cmdlist
;
7744 static struct cmd_list_element
*breakpoint_show_cmdlist
;
7745 struct cmd_list_element
*c
;
7747 breakpoint_chain
= 0;
7748 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7749 before a breakpoint is set. */
7750 breakpoint_count
= 0;
7752 add_com ("ignore", class_breakpoint
, ignore_command
,
7753 "Set ignore-count of breakpoint number N to COUNT.\n\
7754 Usage is `ignore N COUNT'.");
7756 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7758 add_com ("commands", class_breakpoint
, commands_command
,
7759 "Set commands to be executed when a breakpoint is hit.\n\
7760 Give breakpoint number as argument after \"commands\".\n\
7761 With no argument, the targeted breakpoint is the last one set.\n\
7762 The commands themselves follow starting on the next line.\n\
7763 Type a line containing \"end\" to indicate the end of them.\n\
7764 Give \"silent\" as the first line to make the breakpoint silent;\n\
7765 then no output is printed when it is hit, except what the commands print.");
7767 add_com ("condition", class_breakpoint
, condition_command
,
7768 "Specify breakpoint number N to break only if COND is true.\n\
7769 Usage is `condition N COND', where N is an integer and COND is an\n\
7770 expression to be evaluated whenever breakpoint N is reached.");
7772 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
,
7773 "Set a temporary breakpoint. Args like \"break\" command.\n\
7774 Like \"break\" except the breakpoint is only temporary,\n\
7775 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7776 by using \"enable delete\" on the breakpoint number.");
7777 set_cmd_completer (c
, location_completer
);
7779 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
,
7780 "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
7781 Like \"break\" except the breakpoint requires hardware support,\n\
7782 some target hardware may not have this support.");
7783 set_cmd_completer (c
, location_completer
);
7785 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
,
7786 "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
7787 Like \"hbreak\" except the breakpoint is only temporary,\n\
7788 so it will be deleted when hit.");
7789 set_cmd_completer (c
, location_completer
);
7791 add_prefix_cmd ("enable", class_breakpoint
, enable_command
,
7792 "Enable some breakpoints.\n\
7793 Give breakpoint numbers (separated by spaces) as arguments.\n\
7794 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7795 This is used to cancel the effect of the \"disable\" command.\n\
7796 With a subcommand you can enable temporarily.",
7797 &enablelist
, "enable ", 1, &cmdlist
);
7799 add_com ("ab", class_breakpoint
, enable_command
,
7800 "Enable some breakpoints.\n\
7801 Give breakpoint numbers (separated by spaces) as arguments.\n\
7802 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7803 This is used to cancel the effect of the \"disable\" command.\n\
7804 With a subcommand you can enable temporarily.");
7806 add_com_alias ("en", "enable", class_breakpoint
, 1);
7808 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
,
7809 "Enable some breakpoints.\n\
7810 Give breakpoint numbers (separated by spaces) as arguments.\n\
7811 This is used to cancel the effect of the \"disable\" command.\n\
7812 May be abbreviated to simply \"enable\".\n",
7813 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7815 add_cmd ("once", no_class
, enable_once_command
,
7816 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7817 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7820 add_cmd ("delete", no_class
, enable_delete_command
,
7821 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7822 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7825 add_cmd ("delete", no_class
, enable_delete_command
,
7826 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7827 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7830 add_cmd ("once", no_class
, enable_once_command
,
7831 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7832 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7835 add_prefix_cmd ("disable", class_breakpoint
, disable_command
,
7836 "Disable some breakpoints.\n\
7837 Arguments are breakpoint numbers with spaces in between.\n\
7838 To disable all breakpoints, give no argument.\n\
7839 A disabled breakpoint is not forgotten, but has no effect until reenabled.",
7840 &disablelist
, "disable ", 1, &cmdlist
);
7841 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7842 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7844 add_com ("sb", class_breakpoint
, disable_command
,
7845 "Disable some breakpoints.\n\
7846 Arguments are breakpoint numbers with spaces in between.\n\
7847 To disable all breakpoints, give no argument.\n\
7848 A disabled breakpoint is not forgotten, but has no effect until reenabled.");
7850 add_cmd ("breakpoints", class_alias
, disable_command
,
7851 "Disable some breakpoints.\n\
7852 Arguments are breakpoint numbers with spaces in between.\n\
7853 To disable all breakpoints, give no argument.\n\
7854 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7855 This command may be abbreviated \"disable\".",
7858 add_prefix_cmd ("delete", class_breakpoint
, delete_command
,
7859 "Delete some breakpoints or auto-display expressions.\n\
7860 Arguments are breakpoint numbers with spaces in between.\n\
7861 To delete all breakpoints, give no argument.\n\
7863 Also a prefix command for deletion of other GDB objects.\n\
7864 The \"unset\" command is also an alias for \"delete\".",
7865 &deletelist
, "delete ", 1, &cmdlist
);
7866 add_com_alias ("d", "delete", class_breakpoint
, 1);
7868 add_com ("db", class_breakpoint
, delete_command
,
7869 "Delete some breakpoints.\n\
7870 Arguments are breakpoint numbers with spaces in between.\n\
7871 To delete all breakpoints, give no argument.\n");
7873 add_cmd ("breakpoints", class_alias
, delete_command
,
7874 "Delete some breakpoints or auto-display expressions.\n\
7875 Arguments are breakpoint numbers with spaces in between.\n\
7876 To delete all breakpoints, give no argument.\n\
7877 This command may be abbreviated \"delete\".",
7880 add_com ("clear", class_breakpoint
, clear_command
,
7881 concat ("Clear breakpoint at specified line or function.\n\
7882 Argument may be line number, function name, or \"*\" and an address.\n\
7883 If line number is specified, all breakpoints in that line are cleared.\n\
7884 If function is specified, breakpoints at beginning of function are cleared.\n\
7885 If an address is specified, breakpoints at that address are cleared.\n\n",
7886 "With no argument, clears all breakpoints in the line that the selected frame\n\
7889 See also the \"delete\" command which clears breakpoints by number.", NULL
));
7891 c
= add_com ("break", class_breakpoint
, break_command
,
7892 concat ("Set breakpoint at specified line or function.\n\
7893 Argument may be line number, function name, or \"*\" and an address.\n\
7894 If line number is specified, break at start of code for that line.\n\
7895 If function is specified, break at start of code for that function.\n\
7896 If an address is specified, break at that exact address.\n",
7897 "With no arg, uses current execution address of selected stack frame.\n\
7898 This is useful for breaking on return to a stack frame.\n\
7900 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7902 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7903 set_cmd_completer (c
, location_completer
);
7905 add_com_alias ("b", "break", class_run
, 1);
7906 add_com_alias ("br", "break", class_run
, 1);
7907 add_com_alias ("bre", "break", class_run
, 1);
7908 add_com_alias ("brea", "break", class_run
, 1);
7912 add_com_alias ("ba", "break", class_breakpoint
, 1);
7913 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
7918 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
,
7919 "Break in function/address or break at a line in the current file.",
7920 &stoplist
, "stop ", 1, &cmdlist
);
7921 add_cmd ("in", class_breakpoint
, stopin_command
,
7922 "Break in function or address.\n", &stoplist
);
7923 add_cmd ("at", class_breakpoint
, stopat_command
,
7924 "Break at a line in the current file.\n", &stoplist
);
7925 add_com ("status", class_info
, breakpoints_info
,
7926 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7927 The \"Type\" column indicates one of:\n\
7928 \tbreakpoint - normal breakpoint\n\
7929 \twatchpoint - watchpoint\n\
7930 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7931 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7932 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7933 address and file/line number respectively.\n\n",
7934 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7935 are set to the address of the last breakpoint listed.\n\n\
7936 Convenience variable \"$bpnum\" contains the number of the last\n\
7937 breakpoint set.", NULL
));
7940 add_info ("breakpoints", breakpoints_info
,
7941 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7942 The \"Type\" column indicates one of:\n\
7943 \tbreakpoint - normal breakpoint\n\
7944 \twatchpoint - watchpoint\n\
7945 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7946 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7947 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7948 address and file/line number respectively.\n\n",
7949 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7950 are set to the address of the last breakpoint listed.\n\n\
7951 Convenience variable \"$bpnum\" contains the number of the last\n\
7952 breakpoint set.", NULL
));
7955 add_com ("lb", class_breakpoint
, breakpoints_info
,
7956 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7957 The \"Type\" column indicates one of:\n\
7958 \tbreakpoint - normal breakpoint\n\
7959 \twatchpoint - watchpoint\n\
7960 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7961 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7962 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7963 address and file/line number respectively.\n\n",
7964 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7965 are set to the address of the last breakpoint listed.\n\n\
7966 Convenience variable \"$bpnum\" contains the number of the last\n\
7967 breakpoint set.", NULL
));
7969 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
,
7970 concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
7971 The \"Type\" column indicates one of:\n\
7972 \tbreakpoint - normal breakpoint\n\
7973 \twatchpoint - watchpoint\n\
7974 \tlongjmp - internal breakpoint used to step through longjmp()\n\
7975 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
7976 \tuntil - internal breakpoint used by the \"until\" command\n\
7977 \tfinish - internal breakpoint used by the \"finish\" command\n",
7978 "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7979 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7980 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7981 address and file/line number respectively.\n\n",
7982 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7983 are set to the address of the last breakpoint listed.\n\n\
7984 Convenience variable \"$bpnum\" contains the number of the last\n\
7985 breakpoint set.", NULL
),
7986 &maintenanceinfolist
);
7988 add_com ("catch", class_breakpoint
, catch_command
,
7989 "Set catchpoints to catch events.\n\
7990 Raised signals may be caught:\n\
7991 \tcatch signal - all signals\n\
7992 \tcatch signal <signame> - a particular signal\n\
7993 Raised exceptions may be caught:\n\
7994 \tcatch throw - all exceptions, when thrown\n\
7995 \tcatch throw <exceptname> - a particular exception, when thrown\n\
7996 \tcatch catch - all exceptions, when caught\n\
7997 \tcatch catch <exceptname> - a particular exception, when caught\n\
7998 Thread or process events may be caught:\n\
7999 \tcatch thread_start - any threads, just after creation\n\
8000 \tcatch thread_exit - any threads, just before expiration\n\
8001 \tcatch thread_join - any threads, just after joins\n\
8002 Process events may be caught:\n\
8003 \tcatch start - any processes, just after creation\n\
8004 \tcatch exit - any processes, just before expiration\n\
8005 \tcatch fork - calls to fork()\n\
8006 \tcatch vfork - calls to vfork()\n\
8007 \tcatch exec - calls to exec()\n\
8008 Dynamically-linked library events may be caught:\n\
8009 \tcatch load - loads of any library\n\
8010 \tcatch load <libname> - loads of a particular library\n\
8011 \tcatch unload - unloads of any library\n\
8012 \tcatch unload <libname> - unloads of a particular library\n\
8013 The act of your program's execution stopping may also be caught:\n\
8015 C++ exceptions may be caught:\n\
8016 \tcatch throw - all exceptions, when thrown\n\
8017 \tcatch catch - all exceptions, when caught\n\
8019 Do \"help set follow-fork-mode\" for info on debugging your program\n\
8020 after a fork or vfork is caught.\n\n\
8021 Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
8023 add_com ("tcatch", class_breakpoint
, tcatch_command
,
8024 "Set temporary catchpoints to catch events.\n\
8025 Args like \"catch\" command.\n\
8026 Like \"catch\" except the catchpoint is only temporary,\n\
8027 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
8028 by using \"enable delete\" on the catchpoint number.");
8030 c
= add_com ("watch", class_breakpoint
, watch_command
,
8031 "Set a watchpoint for an expression.\n\
8032 A watchpoint stops execution of your program whenever the value of\n\
8033 an expression changes.");
8034 set_cmd_completer (c
, location_completer
);
8036 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
,
8037 "Set a read watchpoint for an expression.\n\
8038 A watchpoint stops execution of your program whenever the value of\n\
8039 an expression is read.");
8040 set_cmd_completer (c
, location_completer
);
8042 c
= add_com ("awatch", class_breakpoint
, awatch_command
,
8043 "Set a watchpoint for an expression.\n\
8044 A watchpoint stops execution of your program whenever the value of\n\
8045 an expression is either read or written.");
8046 set_cmd_completer (c
, location_completer
);
8048 add_info ("watchpoints", breakpoints_info
,
8049 "Synonym for ``info breakpoints''.");
8052 c
= add_set_cmd ("can-use-hw-watchpoints", class_support
, var_zinteger
,
8053 (char *) &can_use_hw_watchpoints
,
8054 "Set debugger's willingness to use watchpoint hardware.\n\
8055 If zero, gdb will not use hardware for new watchpoints, even if\n\
8056 such is available. (However, any hardware watchpoints that were\n\
8057 created before setting this to nonzero, will continue to use watchpoint\n\
8060 add_show_from_set (c
, &showlist
);
8062 can_use_hw_watchpoints
= 1;
8064 add_prefix_cmd ("breakpoint", class_maintenance
, set_breakpoint_cmd
, "\
8065 Breakpoint specific settings\n\
8066 Configure various breakpoint-specific variables such as\n\
8067 pending breakpoint behavior",
8068 &breakpoint_set_cmdlist
, "set breakpoint ",
8069 0/*allow-unknown*/, &setlist
);
8070 add_prefix_cmd ("breakpoint", class_maintenance
, show_breakpoint_cmd
, "\
8071 Breakpoint specific settings\n\
8072 Configure various breakpoint-specific variables such as\n\
8073 pending breakpoint behavior",
8074 &breakpoint_show_cmdlist
, "show breakpoint ",
8075 0/*allow-unknown*/, &showlist
);
8077 add_setshow_auto_boolean_cmd ("pending", no_class
, &pending_break_support
, "\
8078 Set debugger's behavior regarding pending breakpoints.\n\
8079 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8080 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8081 an error. If auto, an unrecognized breakpoint location results in a\n\
8082 user-query to see if a pending breakpoint should be created.","\
8083 Show debugger's behavior regarding pending breakpoints.\n\
8084 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8085 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8086 an error. If auto, an unrecognized breakpoint location results in a\n\
8087 user-query to see if a pending breakpoint should be created.",
8089 &breakpoint_set_cmdlist
,
8090 &breakpoint_show_cmdlist
);
8092 pending_break_support
= AUTO_BOOLEAN_AUTO
;