1 /* Everything about breakpoints, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 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., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, 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"
55 #include "exceptions.h"
59 #include "gdb-events.h"
60 #include "mi/mi-common.h"
62 /* Prototypes for local functions. */
64 static void until_break_command_continuation (struct continuation_arg
*arg
);
66 static void catch_command_1 (char *, int, int);
68 static void enable_delete_command (char *, int);
70 static void enable_delete_breakpoint (struct breakpoint
*);
72 static void enable_once_command (char *, int);
74 static void enable_once_breakpoint (struct breakpoint
*);
76 static void disable_command (char *, int);
78 static void enable_command (char *, int);
80 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
82 static void ignore_command (char *, int);
84 static int breakpoint_re_set_one (void *);
86 static void clear_command (char *, int);
88 static void catch_command (char *, int);
90 static void watch_command (char *, int);
92 static int can_use_hardware_watchpoint (struct value
*);
94 static int break_command_1 (char *, int, int, struct breakpoint
*);
96 static void mention (struct breakpoint
*);
98 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
, enum bptype
);
100 static void check_duplicates (struct breakpoint
*);
102 static void breakpoint_adjustment_warning (CORE_ADDR
, CORE_ADDR
, int, int);
104 static CORE_ADDR
adjust_breakpoint_address (CORE_ADDR bpaddr
,
107 static void describe_other_breakpoints (CORE_ADDR
, asection
*, int);
109 static void breakpoints_info (char *, int);
111 static void breakpoint_1 (int, int);
113 static bpstat
bpstat_alloc (struct breakpoint
*, bpstat
);
115 static int breakpoint_cond_eval (void *);
117 static void cleanup_executing_breakpoints (void *);
119 static void commands_command (char *, int);
121 static void condition_command (char *, int);
123 static int get_number_trailer (char **, int);
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 stop_command (char *arg
, int from_tty
);
184 static void stopin_command (char *arg
, int from_tty
);
186 static void stopat_command (char *arg
, int from_tty
);
188 static char *ep_find_event_name_end (char *arg
);
190 static char *ep_parse_optional_if_clause (char **arg
);
192 static char *ep_parse_optional_filename (char **arg
);
194 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
195 enum exception_event_kind ex_event
,
196 struct symtab_and_line
*sal
);
198 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
199 char *arg
, int tempflag
, int from_tty
);
201 static void tcatch_command (char *arg
, int from_tty
);
203 static void ep_skip_leading_whitespace (char **s
);
205 static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc
);
207 /* Prototypes for exported functions. */
209 /* If FALSE, gdb will not use hardware support for watchpoints, even
210 if such is available. */
211 static int can_use_hw_watchpoints
;
214 show_can_use_hw_watchpoints (struct ui_file
*file
, int from_tty
,
215 struct cmd_list_element
*c
,
218 fprintf_filtered (file
, _("\
219 Debugger's willingness to use watchpoint hardware is %s.\n"),
223 /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
224 If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
225 for unrecognized breakpoint locations.
226 If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
227 static enum auto_boolean pending_break_support
;
229 show_pending_break_support (struct ui_file
*file
, int from_tty
,
230 struct cmd_list_element
*c
,
233 fprintf_filtered (file
, _("\
234 Debugger's behavior regarding pending breakpoints is %s.\n"),
238 /* If 1, gdb will automatically use hardware breakpoints for breakpoints
239 set with "break" but falling in read-only memory.
240 If 0, gdb will warn about such breakpoints, but won't automatically
241 use hardware breakpoints. */
242 static int automatic_hardware_breakpoints
;
244 show_automatic_hardware_breakpoints (struct ui_file
*file
, int from_tty
,
245 struct cmd_list_element
*c
,
248 fprintf_filtered (file
, _("\
249 Automatic usage of hardware breakpoints is %s.\n"),
254 void _initialize_breakpoint (void);
256 extern int addressprint
; /* Print machine addresses? */
258 /* Are we executing breakpoint commands? */
259 static int executing_breakpoint_commands
;
261 /* Are overlay event breakpoints enabled? */
262 static int overlay_events_enabled
;
264 /* Walk the following statement or block through all breakpoints.
265 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
268 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
270 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
271 for (B = breakpoint_chain; \
272 B ? (TMP=B->next, 1): 0; \
275 /* Similar iterators for the low-level breakpoints. */
277 #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next)
279 #define ALL_BP_LOCATIONS_SAFE(B,TMP) \
280 for (B = bp_location_chain; \
281 B ? (TMP=B->next, 1): 0; \
284 /* True if breakpoint hit counts should be displayed in breakpoint info. */
286 int show_breakpoint_hit_counts
= 1;
288 /* Chains of all breakpoints defined. */
290 struct breakpoint
*breakpoint_chain
;
292 struct bp_location
*bp_location_chain
;
294 /* Number of last breakpoint made. */
296 int breakpoint_count
;
298 /* Pointer to current exception event record */
299 static struct exception_event_record
*current_exception_event
;
301 /* Indicator of whether exception catchpoints should be nuked between
302 runs of a program. */
303 int deprecated_exception_catchpoints_are_fragile
= 0;
305 /* Indicator of when exception catchpoints set-up should be
306 reinitialized -- e.g. when program is re-run. */
307 int deprecated_exception_support_initialized
= 0;
309 /* This function returns a pointer to the string representation of the
310 pathname of the dynamically-linked library that has just been
313 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
314 or undefined results are guaranteed.
316 This string's contents are only valid immediately after the
317 inferior has stopped in the dynamic linker hook, and becomes
318 invalid as soon as the inferior is continued. Clients should make
319 a copy of this string if they wish to continue the inferior and
320 then access the string. */
322 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
323 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
326 /* This function returns a pointer to the string representation of the
327 pathname of the dynamically-linked library that has just been
330 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
331 TRUE, or undefined results are guaranteed.
333 This string's contents are only valid immediately after the
334 inferior has stopped in the dynamic linker hook, and becomes
335 invalid as soon as the inferior is continued. Clients should make
336 a copy of this string if they wish to continue the inferior and
337 then access the string. */
339 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
340 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
343 /* This function is called by the "catch load" command. It allows the
344 debugger to be notified by the dynamic linker when a specified
345 library file (or any library file, if filename is NULL) is loaded. */
347 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
348 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
349 error (_("catch of library loads not yet implemented on this platform"))
352 /* This function is called by the "catch unload" command. It allows
353 the debugger to be notified by the dynamic linker when a specified
354 library file (or any library file, if filename is NULL) is
357 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
358 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \
359 error (_("catch of library unloads not yet implemented on this platform"))
362 /* Return whether a breakpoint is an active enabled breakpoint. */
364 breakpoint_enabled (struct breakpoint
*b
)
366 return (b
->enable_state
== bp_enabled
&& !b
->pending
);
369 /* Set breakpoint count to NUM. */
372 set_breakpoint_count (int num
)
374 breakpoint_count
= num
;
375 set_internalvar (lookup_internalvar ("bpnum"),
376 value_from_longest (builtin_type_int
, (LONGEST
) num
));
379 /* Used in run_command to zero the hit count when a new run starts. */
382 clear_breakpoint_hit_counts (void)
384 struct breakpoint
*b
;
390 /* Default address, symtab and line to put a breakpoint at
391 for "break" command with no arg.
392 if default_breakpoint_valid is zero, the other three are
393 not valid, and "break" with no arg is an error.
395 This set by print_stack_frame, which calls set_default_breakpoint. */
397 int default_breakpoint_valid
;
398 CORE_ADDR default_breakpoint_address
;
399 struct symtab
*default_breakpoint_symtab
;
400 int default_breakpoint_line
;
402 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
403 Advance *PP after the string and any trailing whitespace.
405 Currently the string can either be a number or "$" followed by the name
406 of a convenience variable. Making it an expression wouldn't work well
407 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
409 If the string is a NULL pointer, that denotes the last breakpoint.
411 TRAILER is a character which can be found after the number; most
412 commonly this is `-'. If you don't want a trailer, use \0. */
414 get_number_trailer (char **pp
, int trailer
)
416 int retval
= 0; /* default */
420 /* Empty line means refer to the last breakpoint. */
421 return breakpoint_count
;
424 /* Make a copy of the name, so we can null-terminate it
425 to pass to lookup_internalvar(). */
430 while (isalnum (*p
) || *p
== '_')
432 varname
= (char *) alloca (p
- start
+ 1);
433 strncpy (varname
, start
, p
- start
);
434 varname
[p
- start
] = '\0';
435 val
= value_of_internalvar (lookup_internalvar (varname
));
436 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INT
)
437 retval
= (int) value_as_long (val
);
440 printf_filtered (_("Convenience variable must have integer value.\n"));
448 while (*p
>= '0' && *p
<= '9')
451 /* There is no number here. (e.g. "cond a == b"). */
453 /* Skip non-numeric token */
454 while (*p
&& !isspace((int) *p
))
456 /* Return zero, which caller must interpret as error. */
462 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
464 /* Trailing junk: return 0 and let caller print error msg. */
465 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
476 /* Like get_number_trailer, but don't allow a trailer. */
478 get_number (char **pp
)
480 return get_number_trailer (pp
, '\0');
483 /* Parse a number or a range.
484 * A number will be of the form handled by get_number.
485 * A range will be of the form <number1> - <number2>, and
486 * will represent all the integers between number1 and number2,
489 * While processing a range, this fuction is called iteratively;
490 * At each call it will return the next value in the range.
492 * At the beginning of parsing a range, the char pointer PP will
493 * be advanced past <number1> and left pointing at the '-' token.
494 * Subsequent calls will not advance the pointer until the range
495 * is completed. The call that completes the range will advance
496 * pointer PP past <number2>.
500 get_number_or_range (char **pp
)
502 static int last_retval
, end_value
;
503 static char *end_ptr
;
504 static int in_range
= 0;
508 /* Default case: pp is pointing either to a solo number,
509 or to the first number of a range. */
510 last_retval
= get_number_trailer (pp
, '-');
515 /* This is the start of a range (<number1> - <number2>).
516 Skip the '-', parse and remember the second number,
517 and also remember the end of the final token. */
521 while (isspace ((int) *end_ptr
))
522 end_ptr
++; /* skip white space */
523 end_value
= get_number (temp
);
524 if (end_value
< last_retval
)
526 error (_("inverted range"));
528 else if (end_value
== last_retval
)
530 /* degenerate range (number1 == number2). Advance the
531 token pointer so that the range will be treated as a
540 error (_("negative value"));
543 /* pp points to the '-' that betokens a range. All
544 number-parsing has already been done. Return the next
545 integer value (one greater than the saved previous value).
546 Do not advance the token pointer 'pp' until the end of range
549 if (++last_retval
== end_value
)
551 /* End of range reached; advance token pointer. */
561 /* condition N EXP -- set break condition of breakpoint N to EXP. */
564 condition_command (char *arg
, int from_tty
)
566 struct breakpoint
*b
;
571 error_no_arg (_("breakpoint number"));
574 bnum
= get_number (&p
);
576 error (_("Bad breakpoint argument: '%s'"), arg
);
579 if (b
->number
== bnum
)
586 if (b
->cond_string
!= NULL
)
587 xfree (b
->cond_string
);
592 b
->cond_string
= NULL
;
594 printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum
);
599 /* I don't know if it matters whether this is the string the user
600 typed in or the decompiled expression. */
601 b
->cond_string
= savestring (arg
, strlen (arg
));
604 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->loc
->address
), 0);
606 error (_("Junk at end of expression"));
609 breakpoints_changed ();
610 breakpoint_modify_event (b
->number
);
614 error (_("No breakpoint number %d."), bnum
);
618 commands_command (char *arg
, int from_tty
)
620 struct breakpoint
*b
;
623 struct command_line
*l
;
625 /* If we allowed this, we would have problems with when to
626 free the storage, if we change the commands currently
629 if (executing_breakpoint_commands
)
630 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
633 bnum
= get_number (&p
);
636 error (_("Unexpected extra arguments following breakpoint number."));
639 if (b
->number
== bnum
)
641 char *tmpbuf
= xstrprintf ("Type commands for when breakpoint %d is hit, one per line.",
643 struct cleanup
*cleanups
= make_cleanup (xfree
, tmpbuf
);
644 l
= read_command_lines (tmpbuf
, from_tty
);
645 do_cleanups (cleanups
);
646 free_command_lines (&b
->commands
);
648 breakpoints_changed ();
649 breakpoint_modify_event (b
->number
);
652 error (_("No breakpoint number %d."), bnum
);
655 /* Like commands_command, but instead of reading the commands from
656 input stream, takes them from an already parsed command structure.
658 This is used by cli-script.c to DTRT with breakpoint commands
659 that are part of if and while bodies. */
660 enum command_control_type
661 commands_from_control_command (char *arg
, struct command_line
*cmd
)
663 struct breakpoint
*b
;
667 /* If we allowed this, we would have problems with when to
668 free the storage, if we change the commands currently
671 if (executing_breakpoint_commands
)
672 error (_("Can't use the \"commands\" command among a breakpoint's commands."));
674 /* An empty string for the breakpoint number means the last
675 breakpoint, but get_number expects a NULL pointer. */
680 bnum
= get_number (&p
);
683 error (_("Unexpected extra arguments following breakpoint number."));
686 if (b
->number
== bnum
)
688 free_command_lines (&b
->commands
);
689 if (cmd
->body_count
!= 1)
690 error (_("Invalid \"commands\" block structure."));
691 /* We need to copy the commands because if/while will free the
692 list after it finishes execution. */
693 b
->commands
= copy_command_lines (cmd
->body_list
[0]);
694 breakpoints_changed ();
695 breakpoint_modify_event (b
->number
);
696 return simple_control
;
698 error (_("No breakpoint number %d."), bnum
);
701 /* Like target_read_memory() but if breakpoints are inserted, return
702 the shadow contents instead of the breakpoints themselves.
704 Read "memory data" from whatever target or inferior we have.
705 Returns zero if successful, errno value if not. EIO is used
706 for address out of bounds. If breakpoints are inserted, returns
707 shadow contents, not the breakpoints themselves. From breakpoint.c. */
710 read_memory_nobpt (CORE_ADDR memaddr
, gdb_byte
*myaddr
, unsigned len
)
713 struct bp_location
*b
;
714 CORE_ADDR bp_addr
= 0;
717 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
718 /* No breakpoints on this machine. */
719 return target_read_memory (memaddr
, myaddr
, len
);
723 if (b
->owner
->type
== bp_none
)
724 warning (_("reading through apparently deleted breakpoint #%d?"),
727 if (b
->loc_type
!= bp_loc_software_breakpoint
)
731 /* Addresses and length of the part of the breakpoint that
733 bp_addr
= b
->target_info
.placed_address
;
734 bp_size
= b
->target_info
.shadow_len
;
736 /* bp isn't valid, or doesn't shadow memory. */
738 if (bp_addr
+ bp_size
<= memaddr
)
739 /* The breakpoint is entirely before the chunk of memory we
742 if (bp_addr
>= memaddr
+ len
)
743 /* The breakpoint is entirely after the chunk of memory we are
746 /* Copy the breakpoint from the shadow contents, and recurse for
747 the things before and after. */
749 /* Offset within shadow_contents. */
752 if (bp_addr
< memaddr
)
754 /* Only copy the second part of the breakpoint. */
755 bp_size
-= memaddr
- bp_addr
;
756 bptoffset
= memaddr
- bp_addr
;
760 if (bp_addr
+ bp_size
> memaddr
+ len
)
762 /* Only copy the first part of the breakpoint. */
763 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
766 memcpy (myaddr
+ bp_addr
- memaddr
,
767 b
->target_info
.shadow_contents
+ bptoffset
, bp_size
);
769 if (bp_addr
> memaddr
)
771 /* Copy the section of memory before the breakpoint. */
772 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
777 if (bp_addr
+ bp_size
< memaddr
+ len
)
779 /* Copy the section of memory after the breakpoint. */
780 status
= read_memory_nobpt (bp_addr
+ bp_size
,
781 myaddr
+ bp_addr
+ bp_size
- memaddr
,
782 memaddr
+ len
- (bp_addr
+ bp_size
));
789 /* Nothing overlaps. Just call read_memory_noerr. */
790 return target_read_memory (memaddr
, myaddr
, len
);
794 /* A wrapper function for inserting catchpoints. */
796 insert_catchpoint (struct ui_out
*uo
, void *args
)
798 struct breakpoint
*b
= (struct breakpoint
*) args
;
804 target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
807 target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
810 target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
813 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
818 /* Helper routine: free the value chain for a breakpoint (watchpoint). */
821 free_valchain (struct bp_location
*b
)
826 /* Free the saved value chain. We will construct a new one
827 the next time the watchpoint is inserted. */
828 for (v
= b
->owner
->val_chain
; v
; v
= n
)
833 b
->owner
->val_chain
= NULL
;
836 /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint.
837 Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS,
838 PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems.
840 NOTE drow/2003-09-09: This routine could be broken down to an object-style
841 method for each breakpoint or catchpoint type. */
843 insert_bp_location (struct bp_location
*bpt
,
844 struct ui_file
*tmp_error_stream
,
845 int *disabled_breaks
, int *process_warning
,
846 int *hw_breakpoint_error
)
850 /* Permanent breakpoints cannot be inserted or removed. Disabled
851 breakpoints should not be inserted. */
852 if (!breakpoint_enabled (bpt
->owner
))
855 if (bpt
->inserted
|| bpt
->duplicate
)
858 /* Initialize the target-specific information. */
859 memset (&bpt
->target_info
, 0, sizeof (bpt
->target_info
));
860 bpt
->target_info
.placed_address
= bpt
->address
;
862 if (bpt
->loc_type
== bp_loc_software_breakpoint
863 || bpt
->loc_type
== bp_loc_hardware_breakpoint
)
865 if (bpt
->owner
->type
!= bp_hardware_breakpoint
)
867 /* If the explicitly specified breakpoint type
868 is not hardware breakpoint, check the memory map to see
869 if the breakpoint address is in read only memory or not.
870 Two important cases are:
871 - location type is not hardware breakpoint, memory
872 is readonly. We change the type of the location to
874 - location type is hardware breakpoint, memory is read-write.
875 This means we've previously made the location hardware one, but
876 then the memory map changed, so we undo.
878 When breakpoints are removed, remove_breakpoints will
879 use location types we've just set here, the only possible
880 problem is that memory map has changed during running program,
881 but it's not going to work anyway with current gdb. */
882 struct mem_region
*mr
883 = lookup_mem_region (bpt
->target_info
.placed_address
);
887 if (automatic_hardware_breakpoints
)
890 enum bp_loc_type new_type
;
892 if (mr
->attrib
.mode
!= MEM_RW
)
893 new_type
= bp_loc_hardware_breakpoint
;
895 new_type
= bp_loc_software_breakpoint
;
897 if (new_type
!= bpt
->loc_type
)
900 bpt
->loc_type
= new_type
;
903 fprintf_filtered (gdb_stdout
, _("\
904 Note: automatically using hardware breakpoints for read-only addresses.\n"));
909 else if (bpt
->loc_type
== bp_loc_software_breakpoint
910 && mr
->attrib
.mode
!= MEM_RW
)
911 warning (_("cannot set software breakpoint at readonly address %s"),
912 paddr (bpt
->address
));
916 /* First check to see if we have to handle an overlay. */
917 if (overlay_debugging
== ovly_off
918 || bpt
->section
== NULL
919 || !(section_is_overlay (bpt
->section
)))
921 /* No overlay handling: just set the breakpoint. */
923 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
924 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
926 val
= target_insert_breakpoint (&bpt
->target_info
);
930 /* This breakpoint is in an overlay section.
931 Shall we set a breakpoint at the LMA? */
932 if (!overlay_events_enabled
)
934 /* Yes -- overlay event support is not active,
935 so we must try to set a breakpoint at the LMA.
936 This will not work for a hardware breakpoint. */
937 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
938 warning (_("hardware breakpoint %d not supported in overlay!"),
942 CORE_ADDR addr
= overlay_unmapped_address (bpt
->address
,
944 /* Set a software (trap) breakpoint at the LMA. */
945 bpt
->overlay_target_info
= bpt
->target_info
;
946 bpt
->overlay_target_info
.placed_address
= addr
;
947 val
= target_insert_breakpoint (&bpt
->overlay_target_info
);
949 fprintf_unfiltered (tmp_error_stream
,
950 "Overlay breakpoint %d failed: in ROM?",
954 /* Shall we set a breakpoint at the VMA? */
955 if (section_is_mapped (bpt
->section
))
957 /* Yes. This overlay section is mapped into memory. */
958 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
959 val
= target_insert_hw_breakpoint (&bpt
->target_info
);
961 val
= target_insert_breakpoint (&bpt
->target_info
);
965 /* No. This breakpoint will not be inserted.
966 No error, but do not mark the bp as 'inserted'. */
973 /* Can't set the breakpoint. */
975 #if defined (DISABLE_UNSETTABLE_BREAK)
976 DISABLE_UNSETTABLE_BREAK (bpt
->address
)
978 solib_address (bpt
->address
)
982 /* See also: disable_breakpoints_in_shlibs. */
984 bpt
->owner
->enable_state
= bp_shlib_disabled
;
985 if (!*disabled_breaks
)
987 fprintf_unfiltered (tmp_error_stream
,
988 "Cannot insert breakpoint %d.\n",
990 fprintf_unfiltered (tmp_error_stream
,
991 "Temporarily disabling shared library breakpoints:\n");
993 *disabled_breaks
= 1;
994 fprintf_unfiltered (tmp_error_stream
,
995 "breakpoint #%d\n", bpt
->owner
->number
);
999 #ifdef ONE_PROCESS_WRITETEXT
1000 *process_warning
= 1;
1002 if (bpt
->loc_type
== bp_loc_hardware_breakpoint
)
1004 *hw_breakpoint_error
= 1;
1005 fprintf_unfiltered (tmp_error_stream
,
1006 "Cannot insert hardware breakpoint %d.\n",
1007 bpt
->owner
->number
);
1011 fprintf_unfiltered (tmp_error_stream
,
1012 "Cannot insert breakpoint %d.\n",
1013 bpt
->owner
->number
);
1014 fprintf_filtered (tmp_error_stream
,
1015 "Error accessing memory address ");
1016 deprecated_print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
1017 fprintf_filtered (tmp_error_stream
, ": %s.\n",
1018 safe_strerror (val
));
1029 else if (bpt
->loc_type
== bp_loc_hardware_watchpoint
1030 /* NOTE drow/2003-09-08: This state only exists for removing
1031 watchpoints. It's not clear that it's necessary... */
1032 && bpt
->owner
->disposition
!= disp_del_at_next_stop
)
1034 /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints
1035 based on the expression. Ideally this should happen at a higher level,
1036 and there should be one bp_location for each computed address we
1037 must watch. As soon as a many-to-one mapping is available I'll
1040 int within_current_scope
;
1041 struct value
*mark
= value_mark ();
1043 struct frame_id saved_frame_id
;
1045 /* Save the current frame's ID so we can restore it after
1046 evaluating the watchpoint expression on its own frame. */
1047 /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
1048 took a frame parameter, so that we didn't have to change the
1050 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
1052 /* Determine if the watchpoint is within scope. */
1053 if (bpt
->owner
->exp_valid_block
== NULL
)
1054 within_current_scope
= 1;
1057 struct frame_info
*fi
;
1058 fi
= frame_find_by_id (bpt
->owner
->watchpoint_frame
);
1059 within_current_scope
= (fi
!= NULL
);
1060 if (within_current_scope
)
1064 if (within_current_scope
)
1066 free_valchain (bpt
);
1068 /* Evaluate the expression and cut the chain of values
1069 produced off from the value chain.
1071 Make sure the value returned isn't lazy; we use
1072 laziness to determine what memory GDB actually needed
1073 in order to compute the value of the expression. */
1074 v
= evaluate_expression (bpt
->owner
->exp
);
1076 value_release_to_mark (mark
);
1078 bpt
->owner
->val_chain
= v
;
1081 /* Look at each value on the value chain. */
1082 for (; v
; v
= value_next (v
))
1084 /* If it's a memory location, and GDB actually needed
1085 its contents to evaluate the expression, then we
1087 if (VALUE_LVAL (v
) == lval_memory
1088 && ! value_lazy (v
))
1090 struct type
*vtype
= check_typedef (value_type (v
));
1092 /* We only watch structs and arrays if user asked
1093 for it explicitly, never if they just happen to
1094 appear in the middle of some value chain. */
1095 if (v
== bpt
->owner
->val_chain
1096 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1097 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1102 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1103 len
= TYPE_LENGTH (value_type (v
));
1105 if (bpt
->owner
->type
== bp_read_watchpoint
)
1107 else if (bpt
->owner
->type
== bp_access_watchpoint
)
1110 val
= target_insert_watchpoint (addr
, len
, type
);
1113 /* Don't exit the loop, try to insert
1114 every value on the value chain. That's
1115 because we will be removing all the
1116 watches below, and removing a
1117 watchpoint we didn't insert could have
1125 /* Failure to insert a watchpoint on any memory value in the
1126 value chain brings us here. */
1129 remove_breakpoint (bpt
, mark_uninserted
);
1130 *hw_breakpoint_error
= 1;
1131 fprintf_unfiltered (tmp_error_stream
,
1132 "Could not insert hardware watchpoint %d.\n",
1133 bpt
->owner
->number
);
1139 printf_filtered (_("\
1140 Hardware watchpoint %d deleted because the program has left the block \n\
1141 in which its expression is valid.\n"),
1142 bpt
->owner
->number
);
1143 if (bpt
->owner
->related_breakpoint
)
1144 bpt
->owner
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
1145 bpt
->owner
->disposition
= disp_del_at_next_stop
;
1148 /* Restore the selected frame. */
1149 select_frame (frame_find_by_id (saved_frame_id
));
1154 else if (ep_is_exception_catchpoint (bpt
->owner
))
1156 /* FIXME drow/2003-09-09: This code sets both a catchpoint and a
1157 breakpoint. Once again, it would be better if this was represented
1158 as two bp_locations. */
1160 /* If we get here, we must have a callback mechanism for exception
1161 events -- with g++ style embedded label support, we insert
1162 ordinary breakpoints and not catchpoints. */
1163 val
= target_insert_breakpoint (&bpt
->target_info
);
1166 /* Couldn't set breakpoint for some reason */
1167 fprintf_unfiltered (tmp_error_stream
,
1168 "Cannot insert catchpoint %d; disabling it.\n",
1169 bpt
->owner
->number
);
1170 fprintf_filtered (tmp_error_stream
,
1171 "Error accessing memory address ");
1172 deprecated_print_address_numeric (bpt
->address
, 1, tmp_error_stream
);
1173 fprintf_filtered (tmp_error_stream
, ": %s.\n",
1174 safe_strerror (val
));
1175 bpt
->owner
->enable_state
= bp_disabled
;
1179 /* Bp set, now make sure callbacks are enabled */
1180 /* Format possible error msg */
1181 char *message
= xstrprintf ("Error inserting catchpoint %d:\n",
1182 bpt
->owner
->number
);
1183 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
1185 args_for_catchpoint_enable args
;
1186 args
.kind
= bpt
->owner
->type
== bp_catch_catch
?
1187 EX_EVENT_CATCH
: EX_EVENT_THROW
;
1189 val
= catch_errors (cover_target_enable_exception_callback
,
1190 &args
, message
, RETURN_MASK_ALL
);
1191 do_cleanups (cleanups
);
1192 if (val
!= 0 && val
!= -1)
1195 /* Check if something went wrong; val == 0 can be ignored */
1198 /* something went wrong */
1199 fprintf_unfiltered (tmp_error_stream
,
1200 "Cannot insert catchpoint %d; disabling it.\n",
1201 bpt
->owner
->number
);
1202 bpt
->owner
->enable_state
= bp_disabled
;
1209 else if (bpt
->owner
->type
== bp_catch_fork
1210 || bpt
->owner
->type
== bp_catch_vfork
1211 || bpt
->owner
->type
== bp_catch_exec
)
1213 struct gdb_exception e
= catch_exception (uiout
, insert_catchpoint
,
1214 bpt
->owner
, RETURN_MASK_ERROR
);
1215 exception_fprintf (gdb_stderr
, e
, "warning: inserting catchpoint %d: ",
1216 bpt
->owner
->number
);
1218 bpt
->owner
->enable_state
= bp_disabled
;
1222 /* We've already printed an error message if there was a problem
1223 inserting this catchpoint, and we've disabled the catchpoint,
1224 so just return success. */
1231 /* insert_breakpoints is used when starting or continuing the program.
1232 remove_breakpoints is used when the program stops.
1233 Both return zero if successful,
1234 or an `errno' value if could not write the inferior. */
1237 insert_breakpoints (void)
1239 struct bp_location
*b
, *temp
;
1240 int return_val
= 0; /* return success code. */
1242 int disabled_breaks
= 0;
1243 int hw_breakpoint_error
= 0;
1244 int process_warning
= 0;
1246 struct ui_file
*tmp_error_stream
= mem_fileopen ();
1247 make_cleanup_ui_file_delete (tmp_error_stream
);
1249 /* Explicitly mark the warning -- this will only be printed if
1250 there was an error. */
1251 fprintf_unfiltered (tmp_error_stream
, "Warning:\n");
1253 ALL_BP_LOCATIONS_SAFE (b
, temp
)
1255 /* Permanent breakpoints cannot be inserted or removed. Disabled
1256 breakpoints should not be inserted. */
1257 if (!breakpoint_enabled (b
->owner
))
1260 /* There is no point inserting thread-specific breakpoints if the
1261 thread no longer exists. */
1262 if (b
->owner
->thread
!= -1
1263 && !valid_thread_id (b
->owner
->thread
))
1266 /* FIXME drow/2003-10-07: This code should be pushed elsewhere when
1267 hardware watchpoints are split into multiple loc breakpoints. */
1268 if ((b
->loc_type
== bp_loc_hardware_watchpoint
1269 || b
->owner
->type
== bp_watchpoint
) && !b
->owner
->val
)
1272 val
= evaluate_expression (b
->owner
->exp
);
1273 release_value (val
);
1274 if (value_lazy (val
))
1275 value_fetch_lazy (val
);
1276 b
->owner
->val
= val
;
1279 val
= insert_bp_location (b
, tmp_error_stream
,
1280 &disabled_breaks
, &process_warning
,
1281 &hw_breakpoint_error
);
1288 /* If a hardware breakpoint or watchpoint was inserted, add a
1289 message about possibly exhausted resources. */
1290 if (hw_breakpoint_error
)
1292 fprintf_unfiltered (tmp_error_stream
,
1293 "Could not insert hardware breakpoints:\n\
1294 You may have requested too many hardware breakpoints/watchpoints.\n");
1296 #ifdef ONE_PROCESS_WRITETEXT
1297 if (process_warning
)
1298 fprintf_unfiltered (tmp_error_stream
,
1299 "The same program may be running in another process.");
1301 target_terminal_ours_for_output ();
1302 error_stream (tmp_error_stream
);
1308 remove_breakpoints (void)
1310 struct bp_location
*b
;
1313 ALL_BP_LOCATIONS (b
)
1317 val
= remove_breakpoint (b
, mark_uninserted
);
1326 remove_hw_watchpoints (void)
1328 struct bp_location
*b
;
1331 ALL_BP_LOCATIONS (b
)
1333 if (b
->inserted
&& b
->loc_type
== bp_loc_hardware_watchpoint
)
1335 val
= remove_breakpoint (b
, mark_uninserted
);
1344 reattach_breakpoints (int pid
)
1346 struct bp_location
*b
;
1348 struct cleanup
*old_chain
= save_inferior_ptid ();
1350 /* Set inferior_ptid; remove_breakpoint uses this global. */
1351 inferior_ptid
= pid_to_ptid (pid
);
1352 ALL_BP_LOCATIONS (b
)
1356 remove_breakpoint (b
, mark_inserted
);
1357 /* Note: since we insert a breakpoint right after removing,
1358 any decisions about automatically using hardware breakpoints
1359 made in insert_bp_location are preserved. */
1360 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1361 val
= target_insert_hw_breakpoint (&b
->target_info
);
1363 val
= target_insert_breakpoint (&b
->target_info
);
1364 /* FIXME drow/2003-10-07: This doesn't handle any other kinds of
1365 breakpoints. It's wrong for watchpoints, for example. */
1368 do_cleanups (old_chain
);
1373 do_cleanups (old_chain
);
1378 update_breakpoints_after_exec (void)
1380 struct breakpoint
*b
;
1381 struct breakpoint
*temp
;
1383 /* Doing this first prevents the badness of having delete_breakpoint()
1384 write a breakpoint's current "shadow contents" to lift the bp. That
1385 shadow is NOT valid after an exec()! */
1386 mark_breakpoints_out ();
1388 ALL_BREAKPOINTS_SAFE (b
, temp
)
1390 /* Solib breakpoints must be explicitly reset after an exec(). */
1391 if (b
->type
== bp_shlib_event
)
1393 delete_breakpoint (b
);
1397 /* Thread event breakpoints must be set anew after an exec(),
1398 as must overlay event breakpoints. */
1399 if (b
->type
== bp_thread_event
|| b
->type
== bp_overlay_event
)
1401 delete_breakpoint (b
);
1405 /* Step-resume breakpoints are meaningless after an exec(). */
1406 if (b
->type
== bp_step_resume
)
1408 delete_breakpoint (b
);
1412 /* Ditto the exception-handling catchpoints. */
1413 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1415 delete_breakpoint (b
);
1419 /* Don't delete an exec catchpoint, because else the inferior
1420 won't stop when it ought!
1422 Similarly, we probably ought to keep vfork catchpoints, 'cause
1423 on this target, we may not be able to stop when the vfork is
1424 seen, but only when the subsequent exec is seen. (And because
1425 deleting fork catchpoints here but not vfork catchpoints will
1426 seem mysterious to users, keep those too.)
1428 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1429 target address field, if any, is sufficient to have it be reset
1430 automagically. Certainly on HP-UX that's true.
1432 Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly
1433 valid code address on some platforms (like the mn10300
1434 simulators). We shouldn't assign any special interpretation to
1435 a breakpoint with a zero address. And in fact, GDB doesn't ---
1436 I can't see what that comment above is talking about. As far
1437 as I can tell, setting the address of a
1438 bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero
1439 is meaningless, since those are implemented with HP-UX kernel
1440 hackery, not by storing breakpoint instructions somewhere. */
1441 if ((b
->type
== bp_catch_exec
) ||
1442 (b
->type
== bp_catch_vfork
) ||
1443 (b
->type
== bp_catch_fork
))
1445 b
->loc
->address
= (CORE_ADDR
) 0;
1449 /* bp_finish is a special case. The only way we ought to be able
1450 to see one of these when an exec() has happened, is if the user
1451 caught a vfork, and then said "finish". Ordinarily a finish just
1452 carries them to the call-site of the current callee, by setting
1453 a temporary bp there and resuming. But in this case, the finish
1454 will carry them entirely through the vfork & exec.
1456 We don't want to allow a bp_finish to remain inserted now. But
1457 we can't safely delete it, 'cause finish_command has a handle to
1458 the bp on a bpstat, and will later want to delete it. There's a
1459 chance (and I've seen it happen) that if we delete the bp_finish
1460 here, that its storage will get reused by the time finish_command
1461 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1462 We really must allow finish_command to delete a bp_finish.
1464 In the absense of a general solution for the "how do we know
1465 it's safe to delete something others may have handles to?"
1466 problem, what we'll do here is just uninsert the bp_finish, and
1467 let finish_command delete it.
1469 (We know the bp_finish is "doomed" in the sense that it's
1470 momentary, and will be deleted as soon as finish_command sees
1471 the inferior stopped. So it doesn't matter that the bp's
1472 address is probably bogus in the new a.out, unlike e.g., the
1473 solib breakpoints.) */
1475 if (b
->type
== bp_finish
)
1480 /* Without a symbolic address, we have little hope of the
1481 pre-exec() address meaning the same thing in the post-exec()
1483 if (b
->addr_string
== NULL
)
1485 delete_breakpoint (b
);
1489 /* If this breakpoint has survived the above battery of checks, then
1490 it must have a symbolic address. Be sure that it gets reevaluated
1491 to a target address, rather than reusing the old evaluation.
1493 Jim Blandy <jimb@redhat.com>: As explained above in the comment
1494 for bp_catch_exec and friends, I'm pretty sure this is entirely
1495 unnecessary. A call to breakpoint_re_set_one always recomputes
1496 the breakpoint's address from scratch, or deletes it if it can't.
1497 So I think this assignment could be deleted without effect. */
1498 b
->loc
->address
= (CORE_ADDR
) 0;
1500 /* FIXME what about longjmp breakpoints? Re-create them here? */
1501 create_overlay_event_breakpoint ("_ovly_debug_event");
1505 detach_breakpoints (int pid
)
1507 struct bp_location
*b
;
1509 struct cleanup
*old_chain
= save_inferior_ptid ();
1511 if (pid
== PIDGET (inferior_ptid
))
1512 error (_("Cannot detach breakpoints of inferior_ptid"));
1514 /* Set inferior_ptid; remove_breakpoint uses this global. */
1515 inferior_ptid
= pid_to_ptid (pid
);
1516 ALL_BP_LOCATIONS (b
)
1520 val
= remove_breakpoint (b
, mark_inserted
);
1523 do_cleanups (old_chain
);
1528 do_cleanups (old_chain
);
1533 remove_breakpoint (struct bp_location
*b
, insertion_state_t is
)
1537 if (b
->owner
->enable_state
== bp_permanent
)
1538 /* Permanent breakpoints cannot be inserted or removed. */
1541 if (b
->owner
->type
== bp_none
)
1542 warning (_("attempted to remove apparently deleted breakpoint #%d?"),
1545 if (b
->loc_type
== bp_loc_software_breakpoint
1546 || b
->loc_type
== bp_loc_hardware_breakpoint
)
1548 /* "Normal" instruction breakpoint: either the standard
1549 trap-instruction bp (bp_breakpoint), or a
1550 bp_hardware_breakpoint. */
1552 /* First check to see if we have to handle an overlay. */
1553 if (overlay_debugging
== ovly_off
1554 || b
->section
== NULL
1555 || !(section_is_overlay (b
->section
)))
1557 /* No overlay handling: just remove the breakpoint. */
1559 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1560 val
= target_remove_hw_breakpoint (&b
->target_info
);
1562 val
= target_remove_breakpoint (&b
->target_info
);
1566 /* This breakpoint is in an overlay section.
1567 Did we set a breakpoint at the LMA? */
1568 if (!overlay_events_enabled
)
1570 /* Yes -- overlay event support is not active, so we
1571 should have set a breakpoint at the LMA. Remove it.
1573 /* Ignore any failures: if the LMA is in ROM, we will
1574 have already warned when we failed to insert it. */
1575 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1576 target_remove_hw_breakpoint (&b
->overlay_target_info
);
1578 target_remove_breakpoint (&b
->overlay_target_info
);
1580 /* Did we set a breakpoint at the VMA?
1581 If so, we will have marked the breakpoint 'inserted'. */
1584 /* Yes -- remove it. Previously we did not bother to
1585 remove the breakpoint if the section had been
1586 unmapped, but let's not rely on that being safe. We
1587 don't know what the overlay manager might do. */
1588 if (b
->loc_type
== bp_loc_hardware_breakpoint
)
1589 val
= target_remove_hw_breakpoint (&b
->target_info
);
1591 /* However, we should remove *software* breakpoints only
1592 if the section is still mapped, or else we overwrite
1593 wrong code with the saved shadow contents. */
1594 else if (section_is_mapped (b
->section
))
1595 val
= target_remove_breakpoint (&b
->target_info
);
1601 /* No -- not inserted, so no need to remove. No error. */
1607 b
->inserted
= (is
== mark_inserted
);
1609 else if (b
->loc_type
== bp_loc_hardware_watchpoint
1610 && breakpoint_enabled (b
->owner
)
1616 b
->inserted
= (is
== mark_inserted
);
1617 /* Walk down the saved value chain. */
1618 for (v
= b
->owner
->val_chain
; v
; v
= value_next (v
))
1620 /* For each memory reference remove the watchpoint
1622 if (VALUE_LVAL (v
) == lval_memory
1623 && ! value_lazy (v
))
1625 struct type
*vtype
= check_typedef (value_type (v
));
1627 if (v
== b
->owner
->val_chain
1628 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1629 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1634 addr
= VALUE_ADDRESS (v
) + value_offset (v
);
1635 len
= TYPE_LENGTH (value_type (v
));
1637 if (b
->owner
->type
== bp_read_watchpoint
)
1639 else if (b
->owner
->type
== bp_access_watchpoint
)
1642 val
= target_remove_watchpoint (addr
, len
, type
);
1649 /* Failure to remove any of the hardware watchpoints comes here. */
1650 if ((is
== mark_uninserted
) && (b
->inserted
))
1651 warning (_("Could not remove hardware watchpoint %d."),
1654 else if ((b
->owner
->type
== bp_catch_fork
||
1655 b
->owner
->type
== bp_catch_vfork
||
1656 b
->owner
->type
== bp_catch_exec
)
1657 && breakpoint_enabled (b
->owner
)
1661 switch (b
->owner
->type
)
1664 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1666 case bp_catch_vfork
:
1667 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1670 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1673 warning (_("Internal error, %s line %d."), __FILE__
, __LINE__
);
1678 b
->inserted
= (is
== mark_inserted
);
1680 else if ((b
->owner
->type
== bp_catch_catch
||
1681 b
->owner
->type
== bp_catch_throw
)
1682 && breakpoint_enabled (b
->owner
)
1685 val
= target_remove_breakpoint (&b
->target_info
);
1688 b
->inserted
= (is
== mark_inserted
);
1694 /* Clear the "inserted" flag in all breakpoints. */
1697 mark_breakpoints_out (void)
1699 struct bp_location
*bpt
;
1701 ALL_BP_LOCATIONS (bpt
)
1705 /* Clear the "inserted" flag in all breakpoints and delete any
1706 breakpoints which should go away between runs of the program.
1708 Plus other such housekeeping that has to be done for breakpoints
1711 Note: this function gets called at the end of a run (by
1712 generic_mourn_inferior) and when a run begins (by
1713 init_wait_for_inferior). */
1718 breakpoint_init_inferior (enum inf_context context
)
1720 struct breakpoint
*b
, *temp
;
1721 struct bp_location
*bpt
;
1722 static int warning_needed
= 0;
1724 ALL_BP_LOCATIONS (bpt
)
1727 ALL_BREAKPOINTS_SAFE (b
, temp
)
1732 case bp_watchpoint_scope
:
1734 /* If the call dummy breakpoint is at the entry point it will
1735 cause problems when the inferior is rerun, so we better
1738 Also get rid of scope breakpoints. */
1739 delete_breakpoint (b
);
1743 case bp_hardware_watchpoint
:
1744 case bp_read_watchpoint
:
1745 case bp_access_watchpoint
:
1747 /* Likewise for watchpoints on local expressions. */
1748 if (b
->exp_valid_block
!= NULL
)
1749 delete_breakpoint (b
);
1750 if (context
== inf_starting
)
1752 /* Reset val field to force reread of starting value
1753 in insert_breakpoints. */
1755 value_free (b
->val
);
1760 /* Likewise for exception catchpoints in dynamic-linked
1761 executables where required */
1762 if (ep_is_exception_catchpoint (b
)
1763 && deprecated_exception_catchpoints_are_fragile
)
1766 delete_breakpoint (b
);
1772 if (deprecated_exception_catchpoints_are_fragile
)
1773 deprecated_exception_support_initialized
= 0;
1775 /* Don't issue the warning unless it's really needed... */
1776 if (warning_needed
&& (context
!= inf_exited
))
1778 warning (_("Exception catchpoints from last run were deleted.\n"
1779 "You must reinsert them explicitly."));
1784 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1785 exists at PC. It returns ordinary_breakpoint_here if it's an
1786 ordinary breakpoint, or permanent_breakpoint_here if it's a
1787 permanent breakpoint.
1788 - When continuing from a location with an ordinary breakpoint, we
1789 actually single step once before calling insert_breakpoints.
1790 - When continuing from a localion with a permanent breakpoint, we
1791 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1792 the target, to advance the PC past the breakpoint. */
1794 enum breakpoint_here
1795 breakpoint_here_p (CORE_ADDR pc
)
1797 struct bp_location
*bpt
;
1798 int any_breakpoint_here
= 0;
1800 ALL_BP_LOCATIONS (bpt
)
1802 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1803 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1806 if ((breakpoint_enabled (bpt
->owner
)
1807 || bpt
->owner
->enable_state
== bp_permanent
)
1808 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1810 if (overlay_debugging
1811 && section_is_overlay (bpt
->section
)
1812 && !section_is_mapped (bpt
->section
))
1813 continue; /* unmapped overlay -- can't be a match */
1814 else if (bpt
->owner
->enable_state
== bp_permanent
)
1815 return permanent_breakpoint_here
;
1817 any_breakpoint_here
= 1;
1821 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1825 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1826 but it only returns true if there is actually a breakpoint inserted
1830 breakpoint_inserted_here_p (CORE_ADDR pc
)
1832 struct bp_location
*bpt
;
1834 ALL_BP_LOCATIONS (bpt
)
1836 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1837 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1841 && bpt
->address
== pc
) /* bp is inserted and matches pc */
1843 if (overlay_debugging
1844 && section_is_overlay (bpt
->section
)
1845 && !section_is_mapped (bpt
->section
))
1846 continue; /* unmapped overlay -- can't be a match */
1852 /* Also check for software single-step breakpoints. */
1853 if (single_step_breakpoint_inserted_here_p (pc
))
1859 /* This function returns non-zero iff there is a software breakpoint
1863 software_breakpoint_inserted_here_p (CORE_ADDR pc
)
1865 struct bp_location
*bpt
;
1866 int any_breakpoint_here
= 0;
1868 ALL_BP_LOCATIONS (bpt
)
1870 if (bpt
->loc_type
!= bp_loc_software_breakpoint
)
1873 if ((breakpoint_enabled (bpt
->owner
)
1874 || bpt
->owner
->enable_state
== bp_permanent
)
1876 && bpt
->address
== pc
) /* bp is enabled and matches pc */
1878 if (overlay_debugging
1879 && section_is_overlay (bpt
->section
)
1880 && !section_is_mapped (bpt
->section
))
1881 continue; /* unmapped overlay -- can't be a match */
1887 /* Also check for software single-step breakpoints. */
1888 if (single_step_breakpoint_inserted_here_p (pc
))
1894 /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
1895 PC is valid for process/thread PTID. */
1898 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1900 struct bp_location
*bpt
;
1903 thread
= pid_to_thread_id (ptid
);
1905 ALL_BP_LOCATIONS (bpt
)
1907 if (bpt
->loc_type
!= bp_loc_software_breakpoint
1908 && bpt
->loc_type
!= bp_loc_hardware_breakpoint
)
1911 if ((breakpoint_enabled (bpt
->owner
)
1912 || bpt
->owner
->enable_state
== bp_permanent
)
1913 && bpt
->address
== pc
1914 && (bpt
->owner
->thread
== -1 || bpt
->owner
->thread
== thread
))
1916 if (overlay_debugging
1917 && section_is_overlay (bpt
->section
)
1918 && !section_is_mapped (bpt
->section
))
1919 continue; /* unmapped overlay -- can't be a match */
1929 /* bpstat stuff. External routines' interfaces are documented
1933 ep_is_catchpoint (struct breakpoint
*ep
)
1936 (ep
->type
== bp_catch_load
)
1937 || (ep
->type
== bp_catch_unload
)
1938 || (ep
->type
== bp_catch_fork
)
1939 || (ep
->type
== bp_catch_vfork
)
1940 || (ep
->type
== bp_catch_exec
)
1941 || (ep
->type
== bp_catch_catch
)
1942 || (ep
->type
== bp_catch_throw
);
1944 /* ??rehrauer: Add more kinds here, as are implemented... */
1948 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1951 (ep
->type
== bp_catch_load
)
1952 || (ep
->type
== bp_catch_unload
);
1956 ep_is_exception_catchpoint (struct breakpoint
*ep
)
1959 (ep
->type
== bp_catch_catch
)
1960 || (ep
->type
== bp_catch_throw
);
1963 /* Clear a bpstat so that it says we are not at any breakpoint.
1964 Also free any storage that is part of a bpstat. */
1967 bpstat_clear (bpstat
*bsp
)
1978 if (p
->old_val
!= NULL
)
1979 value_free (p
->old_val
);
1980 free_command_lines (&p
->commands
);
1987 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1988 is part of the bpstat is copied as well. */
1991 bpstat_copy (bpstat bs
)
1995 bpstat retval
= NULL
;
2000 for (; bs
!= NULL
; bs
= bs
->next
)
2002 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
2003 memcpy (tmp
, bs
, sizeof (*tmp
));
2004 if (bs
->commands
!= NULL
)
2005 tmp
->commands
= copy_command_lines (bs
->commands
);
2006 if (bs
->old_val
!= NULL
)
2007 tmp
->old_val
= value_copy (bs
->old_val
);
2010 /* This is the first thing in the chain. */
2020 /* Find the bpstat associated with this breakpoint */
2023 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
2028 for (; bsp
!= NULL
; bsp
= bsp
->next
)
2030 if (bsp
->breakpoint_at
== breakpoint
)
2036 /* Find a step_resume breakpoint associated with this bpstat.
2037 (If there are multiple step_resume bp's on the list, this function
2038 will arbitrarily pick one.)
2040 It is an error to use this function if BPSTAT doesn't contain a
2041 step_resume breakpoint.
2043 See wait_for_inferior's use of this function. */
2045 bpstat_find_step_resume_breakpoint (bpstat bsp
)
2049 gdb_assert (bsp
!= NULL
);
2051 current_thread
= pid_to_thread_id (inferior_ptid
);
2053 for (; bsp
!= NULL
; bsp
= bsp
->next
)
2055 if ((bsp
->breakpoint_at
!= NULL
) &&
2056 (bsp
->breakpoint_at
->type
== bp_step_resume
) &&
2057 (bsp
->breakpoint_at
->thread
== current_thread
||
2058 bsp
->breakpoint_at
->thread
== -1))
2059 return bsp
->breakpoint_at
;
2062 internal_error (__FILE__
, __LINE__
, _("No step_resume breakpoint found."));
2066 /* Put in *NUM the breakpoint number of the first breakpoint we are stopped
2067 at. *BSP upon return is a bpstat which points to the remaining
2068 breakpoints stopped at (but which is not guaranteed to be good for
2069 anything but further calls to bpstat_num).
2070 Return 0 if passed a bpstat which does not indicate any breakpoints.
2071 Return -1 if stopped at a breakpoint that has been deleted since
2073 Return 1 otherwise. */
2076 bpstat_num (bpstat
*bsp
, int *num
)
2078 struct breakpoint
*b
;
2081 return 0; /* No more breakpoint values */
2083 b
= (*bsp
)->breakpoint_at
;
2084 *bsp
= (*bsp
)->next
;
2086 return -1; /* breakpoint that's been deleted since */
2088 *num
= b
->number
; /* We have its number */
2092 /* Modify BS so that the actions will not be performed. */
2095 bpstat_clear_actions (bpstat bs
)
2097 for (; bs
!= NULL
; bs
= bs
->next
)
2099 free_command_lines (&bs
->commands
);
2100 if (bs
->old_val
!= NULL
)
2102 value_free (bs
->old_val
);
2108 /* Stub for cleaning up our state if we error-out of a breakpoint command */
2110 cleanup_executing_breakpoints (void *ignore
)
2112 executing_breakpoint_commands
= 0;
2115 /* Execute all the commands associated with all the breakpoints at this
2116 location. Any of these commands could cause the process to proceed
2117 beyond this point, etc. We look out for such changes by checking
2118 the global "breakpoint_proceeded" after each command. */
2121 bpstat_do_actions (bpstat
*bsp
)
2124 struct cleanup
*old_chain
;
2126 /* Avoid endless recursion if a `source' command is contained
2128 if (executing_breakpoint_commands
)
2131 executing_breakpoint_commands
= 1;
2132 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
2135 /* Note that (as of this writing), our callers all appear to
2136 be passing us the address of global stop_bpstat. And, if
2137 our calls to execute_control_command cause the inferior to
2138 proceed, that global (and hence, *bsp) will change.
2140 We must be careful to not touch *bsp unless the inferior
2141 has not proceeded. */
2143 /* This pointer will iterate over the list of bpstat's. */
2146 breakpoint_proceeded
= 0;
2147 for (; bs
!= NULL
; bs
= bs
->next
)
2149 struct command_line
*cmd
;
2150 struct cleanup
*this_cmd_tree_chain
;
2152 /* Take ownership of the BSP's command tree, if it has one.
2154 The command tree could legitimately contain commands like
2155 'step' and 'next', which call clear_proceed_status, which
2156 frees stop_bpstat's command tree. To make sure this doesn't
2157 free the tree we're executing out from under us, we need to
2158 take ownership of the tree ourselves. Since a given bpstat's
2159 commands are only executed once, we don't need to copy it; we
2160 can clear the pointer in the bpstat, and make sure we free
2161 the tree when we're done. */
2164 this_cmd_tree_chain
= make_cleanup_free_command_lines (&cmd
);
2168 execute_control_command (cmd
);
2170 if (breakpoint_proceeded
)
2176 /* We can free this command tree now. */
2177 do_cleanups (this_cmd_tree_chain
);
2179 if (breakpoint_proceeded
)
2180 /* The inferior is proceeded by the command; bomb out now.
2181 The bpstat chain has been blown away by wait_for_inferior.
2182 But since execution has stopped again, there is a new bpstat
2183 to look at, so start over. */
2186 do_cleanups (old_chain
);
2189 /* This is the normal print function for a bpstat. In the future,
2190 much of this logic could (should?) be moved to bpstat_stop_status,
2191 by having it set different print_it values.
2193 Current scheme: When we stop, bpstat_print() is called. It loops
2194 through the bpstat list of things causing this stop, calling the
2195 print_bp_stop_message function on each one. The behavior of the
2196 print_bp_stop_message function depends on the print_it field of
2197 bpstat. If such field so indicates, call this function here.
2199 Return values from this routine (ultimately used by bpstat_print()
2200 and normal_stop() to decide what to do):
2201 PRINT_NOTHING: Means we already printed all we needed to print,
2202 don't print anything else.
2203 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
2204 that something to be followed by a location.
2205 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
2206 that something to be followed by a location.
2207 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
2210 static enum print_stop_action
2211 print_it_typical (bpstat bs
)
2213 struct cleanup
*old_chain
, *ui_out_chain
;
2214 struct ui_stream
*stb
;
2215 stb
= ui_out_stream_new (uiout
);
2216 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
2217 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
2218 which has since been deleted. */
2219 if (bs
->breakpoint_at
== NULL
)
2220 return PRINT_UNKNOWN
;
2222 switch (bs
->breakpoint_at
->type
)
2225 case bp_hardware_breakpoint
:
2226 if (bs
->breakpoint_at
->loc
->address
!= bs
->breakpoint_at
->loc
->requested_address
)
2227 breakpoint_adjustment_warning (bs
->breakpoint_at
->loc
->requested_address
,
2228 bs
->breakpoint_at
->loc
->address
,
2229 bs
->breakpoint_at
->number
, 1);
2230 annotate_breakpoint (bs
->breakpoint_at
->number
);
2231 ui_out_text (uiout
, "\nBreakpoint ");
2232 if (ui_out_is_mi_like_p (uiout
))
2233 ui_out_field_string (uiout
, "reason",
2234 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT
));
2235 ui_out_field_int (uiout
, "bkptno", bs
->breakpoint_at
->number
);
2236 ui_out_text (uiout
, ", ");
2237 return PRINT_SRC_AND_LOC
;
2240 case bp_shlib_event
:
2241 /* Did we stop because the user set the stop_on_solib_events
2242 variable? (If so, we report this as a generic, "Stopped due
2243 to shlib event" message.) */
2244 printf_filtered (_("Stopped due to shared library event\n"));
2245 return PRINT_NOTHING
;
2248 case bp_thread_event
:
2249 /* Not sure how we will get here.
2250 GDB should not stop for these breakpoints. */
2251 printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
2252 return PRINT_NOTHING
;
2255 case bp_overlay_event
:
2256 /* By analogy with the thread event, GDB should not stop for these. */
2257 printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
2258 return PRINT_NOTHING
;
2262 annotate_catchpoint (bs
->breakpoint_at
->number
);
2263 printf_filtered (_("\nCatchpoint %d (loaded %s), "),
2264 bs
->breakpoint_at
->number
,
2265 bs
->breakpoint_at
->triggered_dll_pathname
);
2266 return PRINT_SRC_AND_LOC
;
2269 case bp_catch_unload
:
2270 annotate_catchpoint (bs
->breakpoint_at
->number
);
2271 printf_filtered (_("\nCatchpoint %d (unloaded %s), "),
2272 bs
->breakpoint_at
->number
,
2273 bs
->breakpoint_at
->triggered_dll_pathname
);
2274 return PRINT_SRC_AND_LOC
;
2278 annotate_catchpoint (bs
->breakpoint_at
->number
);
2279 printf_filtered (_("\nCatchpoint %d (forked process %d), "),
2280 bs
->breakpoint_at
->number
,
2281 bs
->breakpoint_at
->forked_inferior_pid
);
2282 return PRINT_SRC_AND_LOC
;
2285 case bp_catch_vfork
:
2286 annotate_catchpoint (bs
->breakpoint_at
->number
);
2287 printf_filtered (_("\nCatchpoint %d (vforked process %d), "),
2288 bs
->breakpoint_at
->number
,
2289 bs
->breakpoint_at
->forked_inferior_pid
);
2290 return PRINT_SRC_AND_LOC
;
2294 annotate_catchpoint (bs
->breakpoint_at
->number
);
2295 printf_filtered (_("\nCatchpoint %d (exec'd %s), "),
2296 bs
->breakpoint_at
->number
,
2297 bs
->breakpoint_at
->exec_pathname
);
2298 return PRINT_SRC_AND_LOC
;
2301 case bp_catch_catch
:
2302 if (current_exception_event
&&
2303 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
2305 annotate_catchpoint (bs
->breakpoint_at
->number
);
2306 printf_filtered (_("\nCatchpoint %d (exception caught), "),
2307 bs
->breakpoint_at
->number
);
2308 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
2309 printf_filtered (_("throw location %s:%d, "),
2310 CURRENT_EXCEPTION_THROW_FILE
,
2311 CURRENT_EXCEPTION_THROW_LINE
);
2313 printf_filtered (_("throw location unknown, "));
2315 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2316 printf_filtered (_("catch location %s:%d\n"),
2317 CURRENT_EXCEPTION_CATCH_FILE
,
2318 CURRENT_EXCEPTION_CATCH_LINE
);
2320 printf_filtered (_("catch location unknown\n"));
2322 /* don't bother to print location frame info */
2323 return PRINT_SRC_ONLY
;
2327 /* really throw, some other bpstat will handle it */
2328 return PRINT_UNKNOWN
;
2332 case bp_catch_throw
:
2333 if (current_exception_event
&&
2334 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
2336 annotate_catchpoint (bs
->breakpoint_at
->number
);
2337 printf_filtered (_("\nCatchpoint %d (exception thrown), "),
2338 bs
->breakpoint_at
->number
);
2339 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
2340 printf_filtered (_("throw location %s:%d, "),
2341 CURRENT_EXCEPTION_THROW_FILE
,
2342 CURRENT_EXCEPTION_THROW_LINE
);
2344 printf_filtered (_("throw location unknown, "));
2346 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2347 printf_filtered (_("catch location %s:%d\n"),
2348 CURRENT_EXCEPTION_CATCH_FILE
,
2349 CURRENT_EXCEPTION_CATCH_LINE
);
2351 printf_filtered (_("catch location unknown\n"));
2353 /* don't bother to print location frame info */
2354 return PRINT_SRC_ONLY
;
2358 /* really catch, some other bpstat will handle it */
2359 return PRINT_UNKNOWN
;
2364 case bp_hardware_watchpoint
:
2365 if (bs
->old_val
!= NULL
)
2367 annotate_watchpoint (bs
->breakpoint_at
->number
);
2368 if (ui_out_is_mi_like_p (uiout
))
2371 async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER
));
2372 mention (bs
->breakpoint_at
);
2373 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2374 ui_out_text (uiout
, "\nOld value = ");
2375 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2376 ui_out_field_stream (uiout
, "old", stb
);
2377 ui_out_text (uiout
, "\nNew value = ");
2378 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2379 ui_out_field_stream (uiout
, "new", stb
);
2380 do_cleanups (ui_out_chain
);
2381 ui_out_text (uiout
, "\n");
2382 value_free (bs
->old_val
);
2385 /* More than one watchpoint may have been triggered. */
2386 return PRINT_UNKNOWN
;
2389 case bp_read_watchpoint
:
2390 if (ui_out_is_mi_like_p (uiout
))
2393 async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER
));
2394 mention (bs
->breakpoint_at
);
2395 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2396 ui_out_text (uiout
, "\nValue = ");
2397 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2398 ui_out_field_stream (uiout
, "value", stb
);
2399 do_cleanups (ui_out_chain
);
2400 ui_out_text (uiout
, "\n");
2401 return PRINT_UNKNOWN
;
2404 case bp_access_watchpoint
:
2405 if (bs
->old_val
!= NULL
)
2407 annotate_watchpoint (bs
->breakpoint_at
->number
);
2408 if (ui_out_is_mi_like_p (uiout
))
2411 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2412 mention (bs
->breakpoint_at
);
2413 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2414 ui_out_text (uiout
, "\nOld value = ");
2415 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2416 ui_out_field_stream (uiout
, "old", stb
);
2417 value_free (bs
->old_val
);
2419 ui_out_text (uiout
, "\nNew value = ");
2423 mention (bs
->breakpoint_at
);
2424 if (ui_out_is_mi_like_p (uiout
))
2427 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER
));
2428 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "value");
2429 ui_out_text (uiout
, "\nValue = ");
2431 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0,Val_pretty_default
);
2432 ui_out_field_stream (uiout
, "new", stb
);
2433 do_cleanups (ui_out_chain
);
2434 ui_out_text (uiout
, "\n");
2435 return PRINT_UNKNOWN
;
2438 /* Fall through, we don't deal with these types of breakpoints
2442 if (ui_out_is_mi_like_p (uiout
))
2445 async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED
));
2446 return PRINT_UNKNOWN
;
2450 if (ui_out_is_mi_like_p (uiout
))
2453 async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED
));
2454 return PRINT_UNKNOWN
;
2459 case bp_longjmp_resume
:
2460 case bp_step_resume
:
2461 case bp_watchpoint_scope
:
2464 return PRINT_UNKNOWN
;
2468 /* Generic routine for printing messages indicating why we
2469 stopped. The behavior of this function depends on the value
2470 'print_it' in the bpstat structure. Under some circumstances we
2471 may decide not to print anything here and delegate the task to
2474 static enum print_stop_action
2475 print_bp_stop_message (bpstat bs
)
2477 switch (bs
->print_it
)
2480 /* Nothing should be printed for this bpstat entry. */
2481 return PRINT_UNKNOWN
;
2485 /* We still want to print the frame, but we already printed the
2486 relevant messages. */
2487 return PRINT_SRC_AND_LOC
;
2490 case print_it_normal
:
2491 /* Normal case. Call the breakpoint's print_it method, or
2492 print_it_typical. */
2493 if (bs
->breakpoint_at
!= NULL
&& bs
->breakpoint_at
->ops
!= NULL
2494 && bs
->breakpoint_at
->ops
->print_it
!= NULL
)
2495 return bs
->breakpoint_at
->ops
->print_it (bs
->breakpoint_at
);
2497 return print_it_typical (bs
);
2501 internal_error (__FILE__
, __LINE__
,
2502 _("print_bp_stop_message: unrecognized enum value"));
2507 /* Print a message indicating what happened. This is called from
2508 normal_stop(). The input to this routine is the head of the bpstat
2509 list - a list of the eventpoints that caused this stop. This
2510 routine calls the generic print routine for printing a message
2511 about reasons for stopping. This will print (for example) the
2512 "Breakpoint n," part of the output. The return value of this
2515 PRINT_UNKNOWN: Means we printed nothing
2516 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2517 code to print the location. An example is
2518 "Breakpoint 1, " which should be followed by
2520 PRINT_SRC_ONLY: Means we printed something, but there is no need
2521 to also print the location part of the message.
2522 An example is the catch/throw messages, which
2523 don't require a location appended to the end.
2524 PRINT_NOTHING: We have done some printing and we don't need any
2525 further info to be printed.*/
2527 enum print_stop_action
2528 bpstat_print (bpstat bs
)
2532 /* Maybe another breakpoint in the chain caused us to stop.
2533 (Currently all watchpoints go on the bpstat whether hit or not.
2534 That probably could (should) be changed, provided care is taken
2535 with respect to bpstat_explains_signal). */
2536 for (; bs
; bs
= bs
->next
)
2538 val
= print_bp_stop_message (bs
);
2539 if (val
== PRINT_SRC_ONLY
2540 || val
== PRINT_SRC_AND_LOC
2541 || val
== PRINT_NOTHING
)
2545 /* We reached the end of the chain, or we got a null BS to start
2546 with and nothing was printed. */
2547 return PRINT_UNKNOWN
;
2550 /* Evaluate the expression EXP and return 1 if value is zero.
2551 This is used inside a catch_errors to evaluate the breakpoint condition.
2552 The argument is a "struct expression *" that has been cast to char * to
2553 make it pass through catch_errors. */
2556 breakpoint_cond_eval (void *exp
)
2558 struct value
*mark
= value_mark ();
2559 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2560 value_free_to_mark (mark
);
2564 /* Allocate a new bpstat and chain it to the current one. */
2567 bpstat_alloc (struct breakpoint
*b
, bpstat cbs
/* Current "bs" value */ )
2571 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2573 bs
->breakpoint_at
= b
;
2574 /* If the condition is false, etc., don't do the commands. */
2575 bs
->commands
= NULL
;
2577 bs
->print_it
= print_it_normal
;
2581 /* Possible return values for watchpoint_check (this can't be an enum
2582 because of check_errors). */
2583 /* The watchpoint has been deleted. */
2584 #define WP_DELETED 1
2585 /* The value has changed. */
2586 #define WP_VALUE_CHANGED 2
2587 /* The value has not changed. */
2588 #define WP_VALUE_NOT_CHANGED 3
2590 #define BP_TEMPFLAG 1
2591 #define BP_HARDWAREFLAG 2
2593 /* Check watchpoint condition. */
2596 watchpoint_check (void *p
)
2598 bpstat bs
= (bpstat
) p
;
2599 struct breakpoint
*b
;
2600 struct frame_info
*fr
;
2601 int within_current_scope
;
2603 b
= bs
->breakpoint_at
;
2605 if (b
->exp_valid_block
== NULL
)
2606 within_current_scope
= 1;
2609 /* There is no current frame at this moment. If we're going to have
2610 any chance of handling watchpoints on local variables, we'll need
2611 the frame chain (so we can determine if we're in scope). */
2612 reinit_frame_cache ();
2613 fr
= frame_find_by_id (b
->watchpoint_frame
);
2614 within_current_scope
= (fr
!= NULL
);
2616 /* If we've gotten confused in the unwinder, we might have
2617 returned a frame that can't describe this variable. */
2618 if (within_current_scope
2619 && block_function (b
->exp_valid_block
) != get_frame_function (fr
))
2620 within_current_scope
= 0;
2622 /* in_function_epilogue_p() returns a non-zero value if we're still
2623 in the function but the stack frame has already been invalidated.
2624 Since we can't rely on the values of local variables after the
2625 stack has been destroyed, we are treating the watchpoint in that
2626 state as `not changed' without further checking.
2628 vinschen/2003-09-04: The former implementation left out the case
2629 that the watchpoint frame couldn't be found by frame_find_by_id()
2630 because the current PC is currently in an epilogue. Calling
2631 gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */
2632 if ((!within_current_scope
|| fr
== get_current_frame ())
2633 && gdbarch_in_function_epilogue_p (current_gdbarch
, read_pc ()))
2634 return WP_VALUE_NOT_CHANGED
;
2635 if (fr
&& within_current_scope
)
2636 /* If we end up stopping, the current frame will get selected
2637 in normal_stop. So this call to select_frame won't affect
2642 if (within_current_scope
)
2644 /* We use value_{,free_to_}mark because it could be a
2645 *long* time before we return to the command level and
2646 call free_all_values. We can't call free_all_values because
2647 we might be in the middle of evaluating a function call. */
2649 struct value
*mark
= value_mark ();
2650 struct value
*new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2651 if (!value_equal (b
->val
, new_val
))
2653 release_value (new_val
);
2654 value_free_to_mark (mark
);
2655 bs
->old_val
= b
->val
;
2657 /* We will stop here */
2658 return WP_VALUE_CHANGED
;
2662 /* Nothing changed, don't do anything. */
2663 value_free_to_mark (mark
);
2664 /* We won't stop here */
2665 return WP_VALUE_NOT_CHANGED
;
2670 /* This seems like the only logical thing to do because
2671 if we temporarily ignored the watchpoint, then when
2672 we reenter the block in which it is valid it contains
2673 garbage (in the case of a function, it may have two
2674 garbage values, one before and one after the prologue).
2675 So we can't even detect the first assignment to it and
2676 watch after that (since the garbage may or may not equal
2677 the first value assigned). */
2678 /* We print all the stop information in print_it_typical(), but
2679 in this case, by the time we call print_it_typical() this bp
2680 will be deleted already. So we have no choice but print the
2681 information here. */
2682 if (ui_out_is_mi_like_p (uiout
))
2684 (uiout
, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE
));
2685 ui_out_text (uiout
, "\nWatchpoint ");
2686 ui_out_field_int (uiout
, "wpnum", bs
->breakpoint_at
->number
);
2687 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2688 which its expression is valid.\n");
2690 if (b
->related_breakpoint
)
2691 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2692 b
->disposition
= disp_del_at_next_stop
;
2698 /* Get a bpstat associated with having just stopped at address
2699 BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the
2700 target thinks we stopped due to a hardware watchpoint, 0 if we
2701 know we did not trigger a hardware watchpoint, and -1 if we do not know. */
2703 /* Determine whether we stopped at a breakpoint, etc, or whether we
2704 don't understand this stop. Result is a chain of bpstat's such that:
2706 if we don't understand the stop, the result is a null pointer.
2708 if we understand why we stopped, the result is not null.
2710 Each element of the chain refers to a particular breakpoint or
2711 watchpoint at which we have stopped. (We may have stopped for
2712 several reasons concurrently.)
2714 Each element of the chain has valid next, breakpoint_at,
2715 commands, FIXME??? fields. */
2718 bpstat_stop_status (CORE_ADDR bp_addr
, ptid_t ptid
, int stopped_by_watchpoint
)
2720 struct breakpoint
*b
, *temp
;
2721 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2722 int real_breakpoint
= 0;
2723 /* Root of the chain of bpstat's */
2724 struct bpstats root_bs
[1];
2725 /* Pointer to the last thing in the chain currently. */
2726 bpstat bs
= root_bs
;
2727 int thread_id
= pid_to_thread_id (ptid
);
2729 ALL_BREAKPOINTS_SAFE (b
, temp
)
2731 if (!breakpoint_enabled (b
) && b
->enable_state
!= bp_permanent
)
2734 if (b
->type
!= bp_watchpoint
2735 && b
->type
!= bp_hardware_watchpoint
2736 && b
->type
!= bp_read_watchpoint
2737 && b
->type
!= bp_access_watchpoint
2738 && b
->type
!= bp_hardware_breakpoint
2739 && b
->type
!= bp_catch_fork
2740 && b
->type
!= bp_catch_vfork
2741 && b
->type
!= bp_catch_exec
2742 && b
->type
!= bp_catch_catch
2743 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2745 if (b
->loc
->address
!= bp_addr
) /* address doesn't match */
2747 if (overlay_debugging
/* unmapped overlay section */
2748 && section_is_overlay (b
->loc
->section
)
2749 && !section_is_mapped (b
->loc
->section
))
2753 /* Continuable hardware watchpoints are treated as non-existent if the
2754 reason we stopped wasn't a hardware watchpoint (we didn't stop on
2755 some data address). Otherwise gdb won't stop on a break instruction
2756 in the code (not from a breakpoint) when a hardware watchpoint has
2759 if ((b
->type
== bp_hardware_watchpoint
2760 || b
->type
== bp_read_watchpoint
2761 || b
->type
== bp_access_watchpoint
)
2762 && !stopped_by_watchpoint
)
2765 if (b
->type
== bp_hardware_breakpoint
)
2767 if (b
->loc
->address
!= bp_addr
)
2769 if (overlay_debugging
/* unmapped overlay section */
2770 && section_is_overlay (b
->loc
->section
)
2771 && !section_is_mapped (b
->loc
->section
))
2775 /* Is this a catchpoint of a load or unload? If so, did we
2776 get a load or unload of the specified library? If not,
2778 if ((b
->type
== bp_catch_load
)
2779 #if defined(SOLIB_HAVE_LOAD_EVENT)
2780 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2781 || ((b
->dll_pathname
!= NULL
)
2782 && (strcmp (b
->dll_pathname
,
2783 SOLIB_LOADED_LIBRARY_PATHNAME (
2784 PIDGET (inferior_ptid
)))
2790 if ((b
->type
== bp_catch_unload
)
2791 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2792 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2793 || ((b
->dll_pathname
!= NULL
)
2794 && (strcmp (b
->dll_pathname
,
2795 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2796 PIDGET (inferior_ptid
)))
2802 if ((b
->type
== bp_catch_fork
)
2803 && !inferior_has_forked (PIDGET (inferior_ptid
),
2804 &b
->forked_inferior_pid
))
2807 if ((b
->type
== bp_catch_vfork
)
2808 && !inferior_has_vforked (PIDGET (inferior_ptid
),
2809 &b
->forked_inferior_pid
))
2812 if ((b
->type
== bp_catch_exec
)
2813 && !inferior_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2816 if (ep_is_exception_catchpoint (b
) &&
2817 !(current_exception_event
= target_get_current_exception_event ()))
2820 /* Come here if it's a watchpoint, or if the break address matches */
2822 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2824 /* Watchpoints may change this, if not found to have triggered. */
2828 if (b
->type
== bp_watchpoint
||
2829 b
->type
== bp_hardware_watchpoint
)
2831 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2833 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2834 int e
= catch_errors (watchpoint_check
, bs
, message
,
2836 do_cleanups (cleanups
);
2840 /* We've already printed what needs to be printed. */
2841 /* Actually this is superfluous, because by the time we
2842 call print_it_typical() the wp will be already deleted,
2843 and the function will return immediately. */
2844 bs
->print_it
= print_it_done
;
2847 case WP_VALUE_CHANGED
:
2851 case WP_VALUE_NOT_CHANGED
:
2853 bs
->print_it
= print_it_noop
;
2860 /* Error from catch_errors. */
2861 printf_filtered (_("Watchpoint %d deleted.\n"), b
->number
);
2862 if (b
->related_breakpoint
)
2863 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2864 b
->disposition
= disp_del_at_next_stop
;
2865 /* We've already printed what needs to be printed. */
2866 bs
->print_it
= print_it_done
;
2872 else if (b
->type
== bp_read_watchpoint
||
2873 b
->type
== bp_access_watchpoint
)
2879 if (!target_stopped_data_address (¤t_target
, &addr
))
2881 for (v
= b
->val_chain
; v
; v
= value_next (v
))
2883 if (VALUE_LVAL (v
) == lval_memory
2884 && ! value_lazy (v
))
2886 struct type
*vtype
= check_typedef (value_type (v
));
2888 if (v
== b
->val_chain
2889 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2890 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2894 vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
2895 /* Exact match not required. Within range is
2897 if (addr
>= vaddr
&&
2898 addr
< vaddr
+ TYPE_LENGTH (value_type (v
)))
2905 char *message
= xstrprintf ("Error evaluating expression for watchpoint %d\n",
2907 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
2908 int e
= catch_errors (watchpoint_check
, bs
, message
,
2910 do_cleanups (cleanups
);
2914 /* We've already printed what needs to be printed. */
2915 bs
->print_it
= print_it_done
;
2918 case WP_VALUE_CHANGED
:
2919 if (b
->type
== bp_read_watchpoint
)
2921 /* Don't stop: read watchpoints shouldn't fire if
2922 the value has changed. This is for targets
2923 which cannot set read-only watchpoints. */
2924 bs
->print_it
= print_it_noop
;
2930 case WP_VALUE_NOT_CHANGED
:
2937 /* Error from catch_errors. */
2938 printf_filtered (_("Watchpoint %d deleted.\n"), b
->number
);
2939 if (b
->related_breakpoint
)
2940 b
->related_breakpoint
->disposition
= disp_del_at_next_stop
;
2941 b
->disposition
= disp_del_at_next_stop
;
2942 /* We've already printed what needs to be printed. */
2943 bs
->print_it
= print_it_done
;
2947 else /* found == 0 */
2949 /* This is a case where some watchpoint(s) triggered,
2950 but not at the address of this watchpoint (FOUND
2951 was left zero). So don't print anything for this
2953 bs
->print_it
= print_it_noop
;
2960 /* By definition, an encountered breakpoint is a triggered
2964 real_breakpoint
= 1;
2967 if (frame_id_p (b
->frame_id
)
2968 && !frame_id_eq (b
->frame_id
, get_frame_id (get_current_frame ())))
2972 int value_is_zero
= 0;
2976 /* Need to select the frame, with all that implies
2977 so that the conditions will have the right context. */
2978 select_frame (get_current_frame ());
2980 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2981 "Error in testing breakpoint condition:\n",
2983 /* FIXME-someday, should give breakpoint # */
2986 if (b
->cond
&& value_is_zero
)
2989 /* Don't consider this a hit. */
2992 else if (b
->thread
!= -1 && b
->thread
!= thread_id
)
2995 /* Don't consider this a hit. */
2998 else if (b
->ignore_count
> 0)
3001 annotate_ignore_count_change ();
3006 /* We will stop here */
3007 if (b
->disposition
== disp_disable
)
3008 b
->enable_state
= bp_disabled
;
3011 bs
->commands
= b
->commands
;
3013 (strcmp ("silent", bs
->commands
->line
) == 0
3014 || (xdb_commands
&& strcmp ("Q", bs
->commands
->line
) == 0)))
3016 bs
->commands
= bs
->commands
->next
;
3019 bs
->commands
= copy_command_lines (bs
->commands
);
3022 /* Print nothing for this entry if we dont stop or if we dont print. */
3023 if (bs
->stop
== 0 || bs
->print
== 0)
3024 bs
->print_it
= print_it_noop
;
3027 bs
->next
= NULL
; /* Terminate the chain */
3028 bs
= root_bs
->next
; /* Re-grab the head of the chain */
3030 /* The value of a hardware watchpoint hasn't changed, but the
3031 intermediate memory locations we are watching may have. */
3032 if (bs
&& !bs
->stop
&&
3033 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
3034 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
3035 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
3037 remove_breakpoints ();
3038 insert_breakpoints ();
3043 /* Tell what to do about this bpstat. */
3045 bpstat_what (bpstat bs
)
3047 /* Classify each bpstat as one of the following. */
3050 /* This bpstat element has no effect on the main_action. */
3053 /* There was a watchpoint, stop but don't print. */
3056 /* There was a watchpoint, stop and print. */
3059 /* There was a breakpoint but we're not stopping. */
3062 /* There was a breakpoint, stop but don't print. */
3065 /* There was a breakpoint, stop and print. */
3068 /* We hit the longjmp breakpoint. */
3071 /* We hit the longjmp_resume breakpoint. */
3074 /* We hit the step_resume breakpoint. */
3077 /* We hit the shared library event breakpoint. */
3080 /* We caught a shared library event. */
3083 /* This is just used to count how many enums there are. */
3087 /* Here is the table which drives this routine. So that we can
3088 format it pretty, we define some abbreviations for the
3089 enum bpstat_what codes. */
3090 #define kc BPSTAT_WHAT_KEEP_CHECKING
3091 #define ss BPSTAT_WHAT_STOP_SILENT
3092 #define sn BPSTAT_WHAT_STOP_NOISY
3093 #define sgl BPSTAT_WHAT_SINGLE
3094 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
3095 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
3096 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
3097 #define sr BPSTAT_WHAT_STEP_RESUME
3098 #define shl BPSTAT_WHAT_CHECK_SHLIBS
3099 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
3101 /* "Can't happen." Might want to print an error message.
3102 abort() is not out of the question, but chances are GDB is just
3103 a bit confused, not unusable. */
3104 #define err BPSTAT_WHAT_STOP_NOISY
3106 /* Given an old action and a class, come up with a new action. */
3107 /* One interesting property of this table is that wp_silent is the same
3108 as bp_silent and wp_noisy is the same as bp_noisy. That is because
3109 after stopping, the check for whether to step over a breakpoint
3110 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
3111 reference to how we stopped. We retain separate wp_silent and
3112 bp_silent codes in case we want to change that someday.
3114 Another possibly interesting property of this table is that
3115 there's a partial ordering, priority-like, of the actions. Once
3116 you've decided that some action is appropriate, you'll never go
3117 back and decide something of a lower priority is better. The
3120 kc < clr sgl shl shlr slr sn sr ss
3121 sgl < clrs shl shlr slr sn sr ss
3122 slr < err shl shlr sn sr ss
3123 clr < clrs err shl shlr sn sr ss
3124 clrs < err shl shlr sn sr ss
3131 What I think this means is that we don't need a damned table
3132 here. If you just put the rows and columns in the right order,
3133 it'd look awfully regular. We could simply walk the bpstat list
3134 and choose the highest priority action we find, with a little
3135 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
3136 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
3137 is messy anyway). */
3139 /* step_resume entries: a step resume breakpoint overrides another
3140 breakpoint of signal handling (see comment in wait_for_inferior
3141 at where we set the step_resume breakpoint). */
3143 static const enum bpstat_what_main_action
3144 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
3147 /* kc ss sn sgl slr clr clrs sr shl shlr
3150 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, shl
, shlr
},
3152 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3154 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3156 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, shl
, shlr
},
3158 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, shl
, shlr
},
3160 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, shl
, shlr
},
3162 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, shl
, shlr
},
3164 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, shl
, shlr
},
3166 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
},
3168 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, sr
, shl
, shlr
},
3170 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, sr
, shlr
, shlr
}
3185 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
3186 struct bpstat_what retval
;
3188 retval
.call_dummy
= 0;
3189 for (; bs
!= NULL
; bs
= bs
->next
)
3191 enum class bs_class
= no_effect
;
3192 if (bs
->breakpoint_at
== NULL
)
3193 /* I suspect this can happen if it was a momentary breakpoint
3194 which has since been deleted. */
3196 switch (bs
->breakpoint_at
->type
)
3202 case bp_hardware_breakpoint
:
3208 bs_class
= bp_noisy
;
3210 bs_class
= bp_silent
;
3213 bs_class
= bp_nostop
;
3216 case bp_hardware_watchpoint
:
3217 case bp_read_watchpoint
:
3218 case bp_access_watchpoint
:
3222 bs_class
= wp_noisy
;
3224 bs_class
= wp_silent
;
3227 /* There was a watchpoint, but we're not stopping.
3228 This requires no further action. */
3229 bs_class
= no_effect
;
3232 bs_class
= long_jump
;
3234 case bp_longjmp_resume
:
3235 bs_class
= long_resume
;
3237 case bp_step_resume
:
3240 bs_class
= step_resume
;
3243 /* It is for the wrong frame. */
3244 bs_class
= bp_nostop
;
3246 case bp_watchpoint_scope
:
3247 bs_class
= bp_nostop
;
3249 case bp_shlib_event
:
3250 bs_class
= shlib_event
;
3252 case bp_thread_event
:
3253 case bp_overlay_event
:
3254 bs_class
= bp_nostop
;
3257 case bp_catch_unload
:
3258 /* Only if this catchpoint triggered should we cause the
3259 step-out-of-dld behaviour. Otherwise, we ignore this
3262 bs_class
= catch_shlib_event
;
3264 bs_class
= no_effect
;
3267 case bp_catch_vfork
:
3272 bs_class
= bp_noisy
;
3274 bs_class
= bp_silent
;
3277 /* There was a catchpoint, but we're not stopping.
3278 This requires no further action. */
3279 bs_class
= no_effect
;
3281 case bp_catch_catch
:
3282 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
3283 bs_class
= bp_nostop
;
3285 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
3287 case bp_catch_throw
:
3288 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
3289 bs_class
= bp_nostop
;
3291 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
3294 /* Make sure the action is stop (silent or noisy),
3295 so infrun.c pops the dummy frame. */
3296 bs_class
= bp_silent
;
3297 retval
.call_dummy
= 1;
3300 current_action
= table
[(int) bs_class
][(int) current_action
];
3302 retval
.main_action
= current_action
;
3306 /* Nonzero if we should step constantly (e.g. watchpoints on machines
3307 without hardware support). This isn't related to a specific bpstat,
3308 just to things like whether watchpoints are set. */
3311 bpstat_should_step (void)
3313 struct breakpoint
*b
;
3315 if (breakpoint_enabled (b
) && b
->type
== bp_watchpoint
)
3320 /* Nonzero if there are enabled hardware watchpoints. */
3322 bpstat_have_active_hw_watchpoints (void)
3324 struct bp_location
*bpt
;
3325 ALL_BP_LOCATIONS (bpt
)
3326 if (breakpoint_enabled (bpt
->owner
)
3328 && bpt
->loc_type
== bp_loc_hardware_watchpoint
)
3334 /* Given a bpstat that records zero or more triggered eventpoints, this
3335 function returns another bpstat which contains only the catchpoints
3336 on that first list, if any. */
3338 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3340 struct bpstats root_bs
[1];
3341 bpstat bs
= root_bs
;
3342 struct breakpoint
*ep
;
3345 bpstat_clear (cp_list
);
3346 root_bs
->next
= NULL
;
3348 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3350 /* Is this eventpoint a catchpoint? If not, ignore it. */
3351 ep
= ep_list
->breakpoint_at
;
3354 if ((ep
->type
!= bp_catch_load
) &&
3355 (ep
->type
!= bp_catch_unload
) &&
3356 (ep
->type
!= bp_catch_catch
) &&
3357 (ep
->type
!= bp_catch_throw
))
3358 /* pai: (temp) ADD fork/vfork here!! */
3361 /* Yes; add it to the list. */
3362 bs
= bpstat_alloc (ep
, bs
);
3367 #if defined(SOLIB_ADD)
3368 /* Also, for each triggered catchpoint, tag it with the name of
3369 the library that caused this trigger. (We copy the name now,
3370 because it's only guaranteed to be available NOW, when the
3371 catchpoint triggers. Clients who may wish to know the name
3372 later must get it from the catchpoint itself.) */
3373 if (ep
->triggered_dll_pathname
!= NULL
)
3374 xfree (ep
->triggered_dll_pathname
);
3375 if (ep
->type
== bp_catch_load
)
3376 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3377 PIDGET (inferior_ptid
));
3379 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3380 PIDGET (inferior_ptid
));
3382 dll_pathname
= NULL
;
3386 ep
->triggered_dll_pathname
= (char *)
3387 xmalloc (strlen (dll_pathname
) + 1);
3388 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3391 ep
->triggered_dll_pathname
= NULL
;
3397 /* Print B to gdb_stdout. */
3399 print_one_breakpoint (struct breakpoint
*b
,
3400 CORE_ADDR
*last_addr
)
3402 struct command_line
*l
;
3404 struct ep_type_description
3409 static struct ep_type_description bptypes
[] =
3411 {bp_none
, "?deleted?"},
3412 {bp_breakpoint
, "breakpoint"},
3413 {bp_hardware_breakpoint
, "hw breakpoint"},
3414 {bp_until
, "until"},
3415 {bp_finish
, "finish"},
3416 {bp_watchpoint
, "watchpoint"},
3417 {bp_hardware_watchpoint
, "hw watchpoint"},
3418 {bp_read_watchpoint
, "read watchpoint"},
3419 {bp_access_watchpoint
, "acc watchpoint"},
3420 {bp_longjmp
, "longjmp"},
3421 {bp_longjmp_resume
, "longjmp resume"},
3422 {bp_step_resume
, "step resume"},
3423 {bp_watchpoint_scope
, "watchpoint scope"},
3424 {bp_call_dummy
, "call dummy"},
3425 {bp_shlib_event
, "shlib events"},
3426 {bp_thread_event
, "thread events"},
3427 {bp_overlay_event
, "overlay events"},
3428 {bp_catch_load
, "catch load"},
3429 {bp_catch_unload
, "catch unload"},
3430 {bp_catch_fork
, "catch fork"},
3431 {bp_catch_vfork
, "catch vfork"},
3432 {bp_catch_exec
, "catch exec"},
3433 {bp_catch_catch
, "catch catch"},
3434 {bp_catch_throw
, "catch throw"}
3437 static char *bpdisps
[] =
3438 {"del", "dstp", "dis", "keep"};
3439 static char bpenables
[] = "nynny";
3440 char wrap_indent
[80];
3441 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3442 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3443 struct cleanup
*bkpt_chain
;
3446 bkpt_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "bkpt");
3450 ui_out_field_int (uiout
, "number", b
->number
);
3454 if (((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3455 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3456 internal_error (__FILE__
, __LINE__
,
3457 _("bptypes table does not describe type #%d."),
3459 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3463 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3467 ui_out_field_fmt (uiout
, "enabled", "%c", bpenables
[(int) b
->enable_state
]);
3468 ui_out_spaces (uiout
, 2);
3471 strcpy (wrap_indent
, " ");
3474 if (TARGET_ADDR_BIT
<= 32)
3475 strcat (wrap_indent
, " ");
3477 strcat (wrap_indent
, " ");
3480 if (b
->ops
!= NULL
&& b
->ops
->print_one
!= NULL
)
3481 b
->ops
->print_one (b
, last_addr
);
3486 internal_error (__FILE__
, __LINE__
,
3487 _("print_one_breakpoint: bp_none encountered\n"));
3491 case bp_hardware_watchpoint
:
3492 case bp_read_watchpoint
:
3493 case bp_access_watchpoint
:
3494 /* Field 4, the address, is omitted (which makes the columns
3495 not line up too nicely with the headers, but the effect
3496 is relatively readable). */
3498 ui_out_field_skip (uiout
, "addr");
3500 print_expression (b
->exp
, stb
->stream
);
3501 ui_out_field_stream (uiout
, "what", stb
);
3505 case bp_catch_unload
:
3506 /* Field 4, the address, is omitted (which makes the columns
3507 not line up too nicely with the headers, but the effect
3508 is relatively readable). */
3510 ui_out_field_skip (uiout
, "addr");
3512 if (b
->dll_pathname
== NULL
)
3514 ui_out_field_string (uiout
, "what", "<any library>");
3515 ui_out_spaces (uiout
, 1);
3519 ui_out_text (uiout
, "library \"");
3520 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3521 ui_out_text (uiout
, "\" ");
3526 case bp_catch_vfork
:
3527 /* Field 4, the address, is omitted (which makes the columns
3528 not line up too nicely with the headers, but the effect
3529 is relatively readable). */
3531 ui_out_field_skip (uiout
, "addr");
3533 if (b
->forked_inferior_pid
!= 0)
3535 ui_out_text (uiout
, "process ");
3536 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3537 ui_out_spaces (uiout
, 1);
3542 /* Field 4, the address, is omitted (which makes the columns
3543 not line up too nicely with the headers, but the effect
3544 is relatively readable). */
3546 ui_out_field_skip (uiout
, "addr");
3548 if (b
->exec_pathname
!= NULL
)
3550 ui_out_text (uiout
, "program \"");
3551 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3552 ui_out_text (uiout
, "\" ");
3556 case bp_catch_catch
:
3557 /* Field 4, the address, is omitted (which makes the columns
3558 not line up too nicely with the headers, but the effect
3559 is relatively readable). */
3561 ui_out_field_skip (uiout
, "addr");
3563 ui_out_field_string (uiout
, "what", "exception catch");
3564 ui_out_spaces (uiout
, 1);
3567 case bp_catch_throw
:
3568 /* Field 4, the address, is omitted (which makes the columns
3569 not line up too nicely with the headers, but the effect
3570 is relatively readable). */
3572 ui_out_field_skip (uiout
, "addr");
3574 ui_out_field_string (uiout
, "what", "exception throw");
3575 ui_out_spaces (uiout
, 1);
3579 case bp_hardware_breakpoint
:
3583 case bp_longjmp_resume
:
3584 case bp_step_resume
:
3585 case bp_watchpoint_scope
:
3587 case bp_shlib_event
:
3588 case bp_thread_event
:
3589 case bp_overlay_event
:
3594 ui_out_field_string (uiout
, "addr", "<PENDING>");
3596 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
3599 *last_addr
= b
->loc
->address
;
3602 sym
= find_pc_sect_function (b
->loc
->address
, b
->loc
->section
);
3605 ui_out_text (uiout
, "in ");
3606 ui_out_field_string (uiout
, "func",
3607 SYMBOL_PRINT_NAME (sym
));
3608 ui_out_wrap_hint (uiout
, wrap_indent
);
3609 ui_out_text (uiout
, " at ");
3611 ui_out_field_string (uiout
, "file", b
->source_file
);
3612 ui_out_text (uiout
, ":");
3614 if (ui_out_is_mi_like_p (uiout
))
3616 struct symtab_and_line sal
= find_pc_line (b
->loc
->address
, 0);
3617 char *fullname
= symtab_to_fullname (sal
.symtab
);
3620 ui_out_field_string (uiout
, "fullname", fullname
);
3623 ui_out_field_int (uiout
, "line", b
->line_number
);
3625 else if (b
->pending
)
3627 ui_out_field_string (uiout
, "pending", b
->addr_string
);
3631 print_address_symbolic (b
->loc
->address
, stb
->stream
, demangle
, "");
3632 ui_out_field_stream (uiout
, "at", stb
);
3637 if (b
->thread
!= -1)
3639 /* FIXME: This seems to be redundant and lost here; see the
3640 "stop only in" line a little further down. */
3641 ui_out_text (uiout
, " thread ");
3642 ui_out_field_int (uiout
, "thread", b
->thread
);
3645 ui_out_text (uiout
, "\n");
3647 if (frame_id_p (b
->frame_id
))
3650 ui_out_text (uiout
, "\tstop only in stack frame at ");
3651 /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside
3653 ui_out_field_core_addr (uiout
, "frame", b
->frame_id
.stack_addr
);
3654 ui_out_text (uiout
, "\n");
3657 if (b
->cond
&& !ada_exception_catchpoint_p (b
))
3659 /* We do not print the condition for Ada exception catchpoints
3660 because the condition is an internal implementation detail
3661 that we do not want to expose to the user. */
3663 ui_out_text (uiout
, "\tstop only if ");
3664 print_expression (b
->cond
, stb
->stream
);
3665 ui_out_field_stream (uiout
, "cond", stb
);
3666 ui_out_text (uiout
, "\n");
3669 if (b
->pending
&& b
->cond_string
)
3672 ui_out_text (uiout
, "\tstop only if ");
3673 ui_out_field_string (uiout
, "cond", b
->cond_string
);
3674 ui_out_text (uiout
, "\n");
3677 if (b
->thread
!= -1)
3679 /* FIXME should make an annotation for this */
3680 ui_out_text (uiout
, "\tstop only in thread ");
3681 ui_out_field_int (uiout
, "thread", b
->thread
);
3682 ui_out_text (uiout
, "\n");
3685 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3687 /* FIXME should make an annotation for this */
3688 if (ep_is_catchpoint (b
))
3689 ui_out_text (uiout
, "\tcatchpoint");
3691 ui_out_text (uiout
, "\tbreakpoint");
3692 ui_out_text (uiout
, " already hit ");
3693 ui_out_field_int (uiout
, "times", b
->hit_count
);
3694 if (b
->hit_count
== 1)
3695 ui_out_text (uiout
, " time\n");
3697 ui_out_text (uiout
, " times\n");
3700 /* Output the count also if it is zero, but only if this is
3701 mi. FIXME: Should have a better test for this. */
3702 if (ui_out_is_mi_like_p (uiout
))
3703 if (show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3704 ui_out_field_int (uiout
, "times", b
->hit_count
);
3706 if (b
->ignore_count
)
3709 ui_out_text (uiout
, "\tignore next ");
3710 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3711 ui_out_text (uiout
, " hits\n");
3714 if ((l
= b
->commands
))
3716 struct cleanup
*script_chain
;
3719 script_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "script");
3720 print_command_lines (uiout
, l
, 4);
3721 do_cleanups (script_chain
);
3723 do_cleanups (bkpt_chain
);
3724 do_cleanups (old_chain
);
3727 struct captured_breakpoint_query_args
3733 do_captured_breakpoint_query (struct ui_out
*uiout
, void *data
)
3735 struct captured_breakpoint_query_args
*args
= data
;
3736 struct breakpoint
*b
;
3737 CORE_ADDR dummy_addr
= 0;
3740 if (args
->bnum
== b
->number
)
3742 print_one_breakpoint (b
, &dummy_addr
);
3750 gdb_breakpoint_query (struct ui_out
*uiout
, int bnum
, char **error_message
)
3752 struct captured_breakpoint_query_args args
;
3754 /* For the moment we don't trust print_one_breakpoint() to not throw
3756 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint_query
, &args
,
3757 error_message
, RETURN_MASK_ALL
) < 0)
3763 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3764 catchpoints, et.al.). */
3767 user_settable_breakpoint (const struct breakpoint
*b
)
3769 return (b
->type
== bp_breakpoint
3770 || b
->type
== bp_catch_load
3771 || b
->type
== bp_catch_unload
3772 || b
->type
== bp_catch_fork
3773 || b
->type
== bp_catch_vfork
3774 || b
->type
== bp_catch_exec
3775 || b
->type
== bp_catch_catch
3776 || b
->type
== bp_catch_throw
3777 || b
->type
== bp_hardware_breakpoint
3778 || b
->type
== bp_watchpoint
3779 || b
->type
== bp_read_watchpoint
3780 || b
->type
== bp_access_watchpoint
3781 || b
->type
== bp_hardware_watchpoint
);
3784 /* Print information on user settable breakpoint (watchpoint, etc)
3785 number BNUM. If BNUM is -1 print all user settable breakpoints.
3786 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3789 breakpoint_1 (int bnum
, int allflag
)
3791 struct breakpoint
*b
;
3792 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3793 int nr_printable_breakpoints
;
3794 struct cleanup
*bkpttbl_chain
;
3796 /* Compute the number of rows in the table. */
3797 nr_printable_breakpoints
= 0;
3800 || bnum
== b
->number
)
3802 if (allflag
|| user_settable_breakpoint (b
))
3803 nr_printable_breakpoints
++;
3808 = make_cleanup_ui_out_table_begin_end (uiout
, 6, nr_printable_breakpoints
,
3812 = make_cleanup_ui_out_table_begin_end (uiout
, 5, nr_printable_breakpoints
,
3815 if (nr_printable_breakpoints
> 0)
3816 annotate_breakpoints_headers ();
3817 if (nr_printable_breakpoints
> 0)
3819 ui_out_table_header (uiout
, 3, ui_left
, "number", "Num"); /* 1 */
3820 if (nr_printable_breakpoints
> 0)
3822 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3823 if (nr_printable_breakpoints
> 0)
3825 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3826 if (nr_printable_breakpoints
> 0)
3828 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb"); /* 4 */
3831 if (nr_printable_breakpoints
> 0)
3833 if (TARGET_ADDR_BIT
<= 32)
3834 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3836 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3838 if (nr_printable_breakpoints
> 0)
3840 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3841 ui_out_table_body (uiout
);
3842 if (nr_printable_breakpoints
> 0)
3843 annotate_breakpoints_table ();
3847 || bnum
== b
->number
)
3849 /* We only print out user settable breakpoints unless the
3851 if (allflag
|| user_settable_breakpoint (b
))
3852 print_one_breakpoint (b
, &last_addr
);
3855 do_cleanups (bkpttbl_chain
);
3857 if (nr_printable_breakpoints
== 0)
3860 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3862 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3867 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3868 that a comparison of an unsigned with -1 is always false. */
3869 if (last_addr
!= (CORE_ADDR
) -1)
3870 set_next_address (last_addr
);
3873 /* FIXME? Should this be moved up so that it is only called when
3874 there have been breakpoints? */
3875 annotate_breakpoints_table_end ();
3879 breakpoints_info (char *bnum_exp
, int from_tty
)
3884 bnum
= parse_and_eval_long (bnum_exp
);
3886 breakpoint_1 (bnum
, 0);
3890 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3895 bnum
= parse_and_eval_long (bnum_exp
);
3897 breakpoint_1 (bnum
, 1);
3900 /* Print a message describing any breakpoints set at PC. */
3903 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
, int thread
)
3906 struct breakpoint
*b
;
3909 if (b
->loc
->address
== pc
) /* address match / overlay match */
3910 if (!b
->pending
&& (!overlay_debugging
|| b
->loc
->section
== section
))
3915 printf_filtered (_("Note: breakpoint "));
3916 else /* if (others == ???) */
3917 printf_filtered (_("Note: breakpoints "));
3919 if (b
->loc
->address
== pc
) /* address match / overlay match */
3920 if (!b
->pending
&& (!overlay_debugging
|| b
->loc
->section
== section
))
3923 printf_filtered ("%d", b
->number
);
3924 if (b
->thread
== -1 && thread
!= -1)
3925 printf_filtered (" (all threads)");
3926 else if (b
->thread
!= -1)
3927 printf_filtered (" (thread %d)", b
->thread
);
3928 printf_filtered ("%s%s ",
3929 ((b
->enable_state
== bp_disabled
||
3930 b
->enable_state
== bp_shlib_disabled
||
3931 b
->enable_state
== bp_call_disabled
)
3933 : b
->enable_state
== bp_permanent
3937 : ((others
== 1) ? " and" : ""));
3939 printf_filtered (_("also set at pc "));
3940 deprecated_print_address_numeric (pc
, 1, gdb_stdout
);
3941 printf_filtered (".\n");
3945 /* Set the default place to put a breakpoint
3946 for the `break' command with no arguments. */
3949 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3952 default_breakpoint_valid
= valid
;
3953 default_breakpoint_address
= addr
;
3954 default_breakpoint_symtab
= symtab
;
3955 default_breakpoint_line
= line
;
3958 /* Return true iff it is meaningful to use the address member of
3959 BPT. For some breakpoint types, the address member is irrelevant
3960 and it makes no sense to attempt to compare it to other addresses
3961 (or use it for any other purpose either).
3963 More specifically, each of the following breakpoint types will always
3964 have a zero valued address and we don't want check_duplicates() to mark
3965 breakpoints of any of these types to be a duplicate of an actual
3966 breakpoint at address zero:
3969 bp_hardware_watchpoint
3971 bp_access_watchpoint
3978 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3980 enum bptype type
= bpt
->type
;
3982 return (type
!= bp_watchpoint
3983 && type
!= bp_hardware_watchpoint
3984 && type
!= bp_read_watchpoint
3985 && type
!= bp_access_watchpoint
3986 && type
!= bp_catch_exec
3987 && type
!= bp_longjmp_resume
3988 && type
!= bp_catch_fork
3989 && type
!= bp_catch_vfork
);
3992 /* Rescan breakpoints at the same address and section as BPT,
3993 marking the first one as "first" and any others as "duplicates".
3994 This is so that the bpt instruction is only inserted once.
3995 If we have a permanent breakpoint at the same place as BPT, make
3996 that one the official one, and the rest as duplicates. */
3999 check_duplicates (struct breakpoint
*bpt
)
4001 struct bp_location
*b
;
4003 struct bp_location
*perm_bp
= 0;
4004 CORE_ADDR address
= bpt
->loc
->address
;
4005 asection
*section
= bpt
->loc
->section
;
4007 if (! breakpoint_address_is_meaningful (bpt
))
4010 ALL_BP_LOCATIONS (b
)
4011 if (b
->owner
->enable_state
!= bp_disabled
4012 && b
->owner
->enable_state
!= bp_shlib_disabled
4013 && !b
->owner
->pending
4014 && b
->owner
->enable_state
!= bp_call_disabled
4015 && b
->address
== address
/* address / overlay match */
4016 && (!overlay_debugging
|| b
->section
== section
)
4017 && breakpoint_address_is_meaningful (b
->owner
))
4019 /* Have we found a permanent breakpoint? */
4020 if (b
->owner
->enable_state
== bp_permanent
)
4027 b
->duplicate
= count
> 1;
4030 /* If we found a permanent breakpoint at this address, go over the
4031 list again and declare all the other breakpoints there to be the
4035 perm_bp
->duplicate
= 0;
4037 /* Permanent breakpoint should always be inserted. */
4038 if (! perm_bp
->inserted
)
4039 internal_error (__FILE__
, __LINE__
,
4040 _("allegedly permanent breakpoint is not "
4041 "actually inserted"));
4043 ALL_BP_LOCATIONS (b
)
4046 if (b
->owner
->enable_state
!= bp_disabled
4047 && b
->owner
->enable_state
!= bp_shlib_disabled
4048 && !b
->owner
->pending
4049 && b
->owner
->enable_state
!= bp_call_disabled
4050 && b
->address
== address
/* address / overlay match */
4051 && (!overlay_debugging
|| b
->section
== section
)
4052 && breakpoint_address_is_meaningful (b
->owner
))
4055 internal_error (__FILE__
, __LINE__
,
4056 _("another breakpoint was inserted on top of "
4057 "a permanent breakpoint"));
4066 breakpoint_adjustment_warning (CORE_ADDR from_addr
, CORE_ADDR to_addr
,
4067 int bnum
, int have_bnum
)
4072 strcpy (astr1
, hex_string_custom ((unsigned long) from_addr
, 8));
4073 strcpy (astr2
, hex_string_custom ((unsigned long) to_addr
, 8));
4075 warning (_("Breakpoint %d address previously adjusted from %s to %s."),
4076 bnum
, astr1
, astr2
);
4078 warning (_("Breakpoint address adjusted from %s to %s."), astr1
, astr2
);
4081 /* Adjust a breakpoint's address to account for architectural constraints
4082 on breakpoint placement. Return the adjusted address. Note: Very
4083 few targets require this kind of adjustment. For most targets,
4084 this function is simply the identity function. */
4087 adjust_breakpoint_address (CORE_ADDR bpaddr
, enum bptype bptype
)
4089 if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch
))
4091 /* Very few targets need any kind of breakpoint adjustment. */
4094 else if (bptype
== bp_watchpoint
4095 || bptype
== bp_hardware_watchpoint
4096 || bptype
== bp_read_watchpoint
4097 || bptype
== bp_access_watchpoint
4098 || bptype
== bp_catch_fork
4099 || bptype
== bp_catch_vfork
4100 || bptype
== bp_catch_exec
)
4102 /* Watchpoints and the various bp_catch_* eventpoints should not
4103 have their addresses modified. */
4108 CORE_ADDR adjusted_bpaddr
;
4110 /* Some targets have architectural constraints on the placement
4111 of breakpoint instructions. Obtain the adjusted address. */
4112 adjusted_bpaddr
= gdbarch_adjust_breakpoint_address (current_gdbarch
,
4115 /* An adjusted breakpoint address can significantly alter
4116 a user's expectations. Print a warning if an adjustment
4118 if (adjusted_bpaddr
!= bpaddr
)
4119 breakpoint_adjustment_warning (bpaddr
, adjusted_bpaddr
, 0, 0);
4121 return adjusted_bpaddr
;
4125 /* Allocate a struct bp_location. */
4127 static struct bp_location
*
4128 allocate_bp_location (struct breakpoint
*bpt
, enum bptype bp_type
)
4130 struct bp_location
*loc
, *loc_p
;
4132 loc
= xmalloc (sizeof (struct bp_location
));
4133 memset (loc
, 0, sizeof (*loc
));
4143 case bp_longjmp_resume
:
4144 case bp_step_resume
:
4145 case bp_watchpoint_scope
:
4147 case bp_shlib_event
:
4148 case bp_thread_event
:
4149 case bp_overlay_event
:
4151 case bp_catch_unload
:
4152 loc
->loc_type
= bp_loc_software_breakpoint
;
4154 case bp_hardware_breakpoint
:
4155 loc
->loc_type
= bp_loc_hardware_breakpoint
;
4157 case bp_hardware_watchpoint
:
4158 case bp_read_watchpoint
:
4159 case bp_access_watchpoint
:
4160 loc
->loc_type
= bp_loc_hardware_watchpoint
;
4164 case bp_catch_vfork
:
4166 case bp_catch_catch
:
4167 case bp_catch_throw
:
4168 loc
->loc_type
= bp_loc_other
;
4171 internal_error (__FILE__
, __LINE__
, _("unknown breakpoint type"));
4174 /* Add this breakpoint to the end of the chain. */
4176 loc_p
= bp_location_chain
;
4178 bp_location_chain
= loc
;
4182 loc_p
= loc_p
->next
;
4189 /* set_raw_breakpoint() is a low level routine for allocating and
4190 partially initializing a breakpoint of type BPTYPE. The newly
4191 created breakpoint's address, section, source file name, and line
4192 number are provided by SAL. The newly created and partially
4193 initialized breakpoint is added to the breakpoint chain and
4194 is also returned as the value of this function.
4196 It is expected that the caller will complete the initialization of
4197 the newly created breakpoint struct as well as output any status
4198 information regarding the creation of a new breakpoint. In
4199 particular, set_raw_breakpoint() does NOT set the breakpoint
4200 number! Care should be taken to not allow an error() to occur
4201 prior to completing the initialization of the breakpoint. If this
4202 should happen, a bogus breakpoint will be left on the chain. */
4205 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
4207 struct breakpoint
*b
, *b1
;
4208 CORE_ADDR adjusted_address
;
4210 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
4211 memset (b
, 0, sizeof (*b
));
4213 /* Adjust the breakpoint's address prior to allocating a location.
4214 Once we call allocate_bp_location(), that mostly uninitialized
4215 location will be placed on the location chain. Adjustment of the
4216 breakpoint may cause read_memory_nobpt() to be called and we do
4217 not want its scan of the location chain to find a breakpoint and
4218 location that's only been partially initialized. */
4219 adjusted_address
= adjust_breakpoint_address (sal
.pc
, bptype
);
4221 b
->loc
= allocate_bp_location (b
, bptype
);
4222 b
->loc
->requested_address
= sal
.pc
;
4223 b
->loc
->address
= adjusted_address
;
4225 if (sal
.symtab
== NULL
)
4226 b
->source_file
= NULL
;
4228 b
->source_file
= savestring (sal
.symtab
->filename
,
4229 strlen (sal
.symtab
->filename
));
4230 b
->loc
->section
= sal
.section
;
4232 b
->language
= current_language
->la_language
;
4233 b
->input_radix
= input_radix
;
4235 b
->line_number
= sal
.line
;
4236 b
->enable_state
= bp_enabled
;
4239 b
->ignore_count
= 0;
4241 b
->frame_id
= null_frame_id
;
4242 b
->dll_pathname
= NULL
;
4243 b
->triggered_dll_pathname
= NULL
;
4244 b
->forked_inferior_pid
= 0;
4245 b
->exec_pathname
= NULL
;
4249 /* Add this breakpoint to the end of the chain
4250 so that a list of breakpoints will come out in order
4251 of increasing numbers. */
4253 b1
= breakpoint_chain
;
4255 breakpoint_chain
= b
;
4263 check_duplicates (b
);
4264 breakpoints_changed ();
4270 /* Note that the breakpoint object B describes a permanent breakpoint
4271 instruction, hard-wired into the inferior's code. */
4273 make_breakpoint_permanent (struct breakpoint
*b
)
4275 b
->enable_state
= bp_permanent
;
4277 /* By definition, permanent breakpoints are already present in the code. */
4278 b
->loc
->inserted
= 1;
4281 static struct breakpoint
*
4282 create_internal_breakpoint (CORE_ADDR address
, enum bptype type
)
4284 static int internal_breakpoint_number
= -1;
4285 struct symtab_and_line sal
;
4286 struct breakpoint
*b
;
4288 init_sal (&sal
); /* initialize to zeroes */
4291 sal
.section
= find_pc_overlay (sal
.pc
);
4293 b
= set_raw_breakpoint (sal
, type
);
4294 b
->number
= internal_breakpoint_number
--;
4295 b
->disposition
= disp_donttouch
;
4302 create_longjmp_breakpoint (char *func_name
)
4304 struct breakpoint
*b
;
4305 struct minimal_symbol
*m
;
4307 if (func_name
== NULL
)
4308 b
= create_internal_breakpoint (0, bp_longjmp_resume
);
4311 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4314 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
), bp_longjmp
);
4317 b
->enable_state
= bp_disabled
;
4320 b
->addr_string
= xstrdup (func_name
);
4323 /* Call this routine when stepping and nexting to enable a breakpoint
4324 if we do a longjmp(). When we hit that breakpoint, call
4325 set_longjmp_resume_breakpoint() to figure out where we are going. */
4328 enable_longjmp_breakpoint (void)
4330 struct breakpoint
*b
;
4333 if (b
->type
== bp_longjmp
)
4335 b
->enable_state
= bp_enabled
;
4336 check_duplicates (b
);
4341 disable_longjmp_breakpoint (void)
4343 struct breakpoint
*b
;
4346 if (b
->type
== bp_longjmp
4347 || b
->type
== bp_longjmp_resume
)
4349 b
->enable_state
= bp_disabled
;
4350 check_duplicates (b
);
4355 create_overlay_event_breakpoint (char *func_name
)
4357 struct breakpoint
*b
;
4358 struct minimal_symbol
*m
;
4360 if ((m
= lookup_minimal_symbol_text (func_name
, NULL
)) == NULL
)
4363 b
= create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m
),
4365 b
->addr_string
= xstrdup (func_name
);
4367 if (overlay_debugging
== ovly_auto
)
4369 b
->enable_state
= bp_enabled
;
4370 overlay_events_enabled
= 1;
4374 b
->enable_state
= bp_disabled
;
4375 overlay_events_enabled
= 0;
4380 enable_overlay_breakpoints (void)
4382 struct breakpoint
*b
;
4385 if (b
->type
== bp_overlay_event
)
4387 b
->enable_state
= bp_enabled
;
4388 check_duplicates (b
);
4389 overlay_events_enabled
= 1;
4394 disable_overlay_breakpoints (void)
4396 struct breakpoint
*b
;
4399 if (b
->type
== bp_overlay_event
)
4401 b
->enable_state
= bp_disabled
;
4402 check_duplicates (b
);
4403 overlay_events_enabled
= 0;
4408 create_thread_event_breakpoint (CORE_ADDR address
)
4410 struct breakpoint
*b
;
4412 b
= create_internal_breakpoint (address
, bp_thread_event
);
4414 b
->enable_state
= bp_enabled
;
4415 /* addr_string has to be used or breakpoint_re_set will delete me. */
4416 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
4422 remove_thread_event_breakpoints (void)
4424 struct breakpoint
*b
, *temp
;
4426 ALL_BREAKPOINTS_SAFE (b
, temp
)
4427 if (b
->type
== bp_thread_event
)
4428 delete_breakpoint (b
);
4431 struct captured_parse_breakpoint_args
4434 struct symtabs_and_lines
*sals_p
;
4435 char ***addr_string_p
;
4439 struct lang_and_radix
4445 /* Cleanup helper routine to restore the current language and
4448 do_restore_lang_radix_cleanup (void *old
)
4450 struct lang_and_radix
*p
= old
;
4451 set_language (p
->lang
);
4452 input_radix
= p
->radix
;
4455 /* Try and resolve a pending breakpoint. */
4457 resolve_pending_breakpoint (struct breakpoint
*b
)
4459 /* Try and reparse the breakpoint in case the shared library
4461 struct symtabs_and_lines sals
;
4462 struct symtab_and_line pending_sal
;
4463 char **cond_string
= (char **) NULL
;
4464 char *copy_arg
= b
->addr_string
;
4469 struct ui_file
*old_gdb_stderr
;
4470 struct lang_and_radix old_lr
;
4471 struct cleanup
*old_chain
;
4473 /* Set language, input-radix, then reissue breakpoint command.
4474 Ensure the language and input-radix are restored afterwards. */
4475 old_lr
.lang
= current_language
->la_language
;
4476 old_lr
.radix
= input_radix
;
4477 old_chain
= make_cleanup (do_restore_lang_radix_cleanup
, &old_lr
);
4479 set_language (b
->language
);
4480 input_radix
= b
->input_radix
;
4481 rc
= break_command_1 (b
->addr_string
, b
->flag
, b
->from_tty
, b
);
4483 if (rc
== GDB_RC_OK
)
4484 /* Pending breakpoint has been resolved. */
4485 printf_filtered (_("Pending breakpoint \"%s\" resolved\n"), b
->addr_string
);
4487 do_cleanups (old_chain
);
4492 remove_solib_event_breakpoints (void)
4494 struct breakpoint
*b
, *temp
;
4496 ALL_BREAKPOINTS_SAFE (b
, temp
)
4497 if (b
->type
== bp_shlib_event
)
4498 delete_breakpoint (b
);
4502 create_solib_event_breakpoint (CORE_ADDR address
)
4504 struct breakpoint
*b
;
4506 b
= create_internal_breakpoint (address
, bp_shlib_event
);
4510 /* Disable any breakpoints that are on code in shared libraries. Only
4511 apply to enabled breakpoints, disabled ones can just stay disabled. */
4514 disable_breakpoints_in_shlibs (int silent
)
4516 struct breakpoint
*b
;
4517 int disabled_shlib_breaks
= 0;
4519 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
4522 if (((b
->type
== bp_breakpoint
) || (b
->type
== bp_hardware_breakpoint
))
4523 && breakpoint_enabled (b
) && !b
->loc
->duplicate
4525 && PC_SOLIB (b
->loc
->address
)
4527 && solib_address (b
->loc
->address
)
4531 b
->enable_state
= bp_shlib_disabled
;
4534 if (!disabled_shlib_breaks
)
4536 target_terminal_ours_for_output ();
4537 warning (_("Temporarily disabling shared library breakpoints:"));
4539 disabled_shlib_breaks
= 1;
4540 warning (_("breakpoint #%d "), b
->number
);
4546 /* Disable any breakpoints that are in in an unloaded shared library. Only
4547 apply to enabled breakpoints, disabled ones can just stay disabled. */
4550 disable_breakpoints_in_unloaded_shlib (struct so_list
*solib
)
4552 struct breakpoint
*b
;
4553 int disabled_shlib_breaks
= 0;
4555 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
4558 if ((b
->loc
->loc_type
== bp_loc_hardware_breakpoint
4559 || b
->loc
->loc_type
== bp_loc_software_breakpoint
)
4560 && breakpoint_enabled (b
) && !b
->loc
->duplicate
)
4563 char *so_name
= PC_SOLIB (b
->loc
->address
);
4565 char *so_name
= solib_address (b
->loc
->address
);
4567 if (so_name
&& !strcmp (so_name
, solib
->so_name
))
4569 b
->enable_state
= bp_shlib_disabled
;
4570 /* At this point, we cannot rely on remove_breakpoint
4571 succeeding so we must mark the breakpoint as not inserted
4572 to prevent future errors occurring in remove_breakpoints. */
4573 b
->loc
->inserted
= 0;
4574 if (!disabled_shlib_breaks
)
4576 target_terminal_ours_for_output ();
4577 warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""),
4580 disabled_shlib_breaks
= 1;
4586 /* Try to reenable any breakpoints in shared libraries. */
4588 re_enable_breakpoints_in_shlibs (void)
4590 struct breakpoint
*b
, *tmp
;
4592 ALL_BREAKPOINTS_SAFE (b
, tmp
)
4594 if (b
->enable_state
== bp_shlib_disabled
)
4599 /* Do not reenable the breakpoint if the shared library is
4600 still not mapped in. */
4602 lib
= PC_SOLIB (b
->loc
->address
);
4604 lib
= solib_address (b
->loc
->address
);
4606 if (lib
!= NULL
&& target_read_memory (b
->loc
->address
, buf
, 1) == 0)
4607 b
->enable_state
= bp_enabled
;
4609 else if (b
->pending
&& (b
->enable_state
== bp_enabled
))
4611 if (resolve_pending_breakpoint (b
) == GDB_RC_OK
)
4612 delete_breakpoint (b
);
4618 solib_load_unload_1 (char *hookname
, int tempflag
, char *dll_pathname
,
4619 char *cond_string
, enum bptype bp_kind
)
4621 struct breakpoint
*b
;
4622 struct symtabs_and_lines sals
;
4623 struct cleanup
*old_chain
;
4624 struct cleanup
*canonical_strings_chain
= NULL
;
4625 char *addr_start
= hookname
;
4626 char *addr_end
= NULL
;
4627 char **canonical
= (char **) NULL
;
4628 int thread
= -1; /* All threads. */
4630 /* Set a breakpoint on the specified hook. */
4631 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
,
4632 0, &canonical
, NULL
);
4633 addr_end
= hookname
;
4635 if (sals
.nelts
== 0)
4637 warning (_("Unable to set a breakpoint on dynamic linker callback.\n"
4638 "Suggest linking with /opt/langtools/lib/end.o.\n"
4639 "GDB will be unable to track shl_load/shl_unload calls."));
4642 if (sals
.nelts
!= 1)
4644 warning (_("Unable to set unique breakpoint on dynamic linker callback.\n"
4645 "GDB will be unable to track shl_load/shl_unload calls."));
4649 /* Make sure that all storage allocated in decode_line_1 gets freed
4650 in case the following errors out. */
4651 old_chain
= make_cleanup (xfree
, sals
.sals
);
4652 if (canonical
!= (char **) NULL
)
4654 make_cleanup (xfree
, canonical
);
4655 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4656 if (canonical
[0] != NULL
)
4657 make_cleanup (xfree
, canonical
[0]);
4660 resolve_sal_pc (&sals
.sals
[0]);
4662 /* Remove the canonical strings from the cleanup, they are needed below. */
4663 if (canonical
!= (char **) NULL
)
4664 discard_cleanups (canonical_strings_chain
);
4666 b
= set_raw_breakpoint (sals
.sals
[0], bp_kind
);
4667 set_breakpoint_count (breakpoint_count
+ 1);
4668 b
->number
= breakpoint_count
;
4670 b
->cond_string
= (cond_string
== NULL
) ?
4671 NULL
: savestring (cond_string
, strlen (cond_string
));
4674 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
4675 b
->addr_string
= canonical
[0];
4676 else if (addr_start
)
4677 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4679 b
->enable_state
= bp_enabled
;
4680 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4682 if (dll_pathname
== NULL
)
4683 b
->dll_pathname
= NULL
;
4686 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
4687 strcpy (b
->dll_pathname
, dll_pathname
);
4691 do_cleanups (old_chain
);
4695 create_solib_load_event_breakpoint (char *hookname
, int tempflag
,
4696 char *dll_pathname
, char *cond_string
)
4698 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4699 cond_string
, bp_catch_load
);
4703 create_solib_unload_event_breakpoint (char *hookname
, int tempflag
,
4704 char *dll_pathname
, char *cond_string
)
4706 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4707 cond_string
, bp_catch_unload
);
4711 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4712 enum bptype bp_kind
)
4714 struct symtab_and_line sal
;
4715 struct breakpoint
*b
;
4716 int thread
= -1; /* All threads. */
4723 b
= set_raw_breakpoint (sal
, bp_kind
);
4724 set_breakpoint_count (breakpoint_count
+ 1);
4725 b
->number
= breakpoint_count
;
4727 b
->cond_string
= (cond_string
== NULL
) ?
4728 NULL
: savestring (cond_string
, strlen (cond_string
));
4730 b
->addr_string
= NULL
;
4731 b
->enable_state
= bp_enabled
;
4732 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4733 b
->forked_inferior_pid
= 0;
4739 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4741 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4745 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4747 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4751 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4753 struct symtab_and_line sal
;
4754 struct breakpoint
*b
;
4755 int thread
= -1; /* All threads. */
4762 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4763 set_breakpoint_count (breakpoint_count
+ 1);
4764 b
->number
= breakpoint_count
;
4766 b
->cond_string
= (cond_string
== NULL
) ?
4767 NULL
: savestring (cond_string
, strlen (cond_string
));
4769 b
->addr_string
= NULL
;
4770 b
->enable_state
= bp_enabled
;
4771 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
4777 hw_breakpoint_used_count (void)
4779 struct breakpoint
*b
;
4784 if (b
->type
== bp_hardware_breakpoint
&& b
->enable_state
== bp_enabled
)
4792 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4794 struct breakpoint
*b
;
4797 *other_type_used
= 0;
4800 if (breakpoint_enabled (b
))
4802 if (b
->type
== type
)
4804 else if ((b
->type
== bp_hardware_watchpoint
||
4805 b
->type
== bp_read_watchpoint
||
4806 b
->type
== bp_access_watchpoint
))
4807 *other_type_used
= 1;
4813 /* Call this after hitting the longjmp() breakpoint. Use this to set
4814 a new breakpoint at the target of the jmp_buf.
4816 FIXME - This ought to be done by setting a temporary breakpoint
4817 that gets deleted automatically... */
4820 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_id frame_id
)
4822 struct breakpoint
*b
;
4825 if (b
->type
== bp_longjmp_resume
)
4827 b
->loc
->requested_address
= pc
;
4828 b
->loc
->address
= adjust_breakpoint_address (b
->loc
->requested_address
,
4830 b
->enable_state
= bp_enabled
;
4831 b
->frame_id
= frame_id
;
4832 check_duplicates (b
);
4838 disable_watchpoints_before_interactive_call_start (void)
4840 struct breakpoint
*b
;
4844 if (((b
->type
== bp_watchpoint
)
4845 || (b
->type
== bp_hardware_watchpoint
)
4846 || (b
->type
== bp_read_watchpoint
)
4847 || (b
->type
== bp_access_watchpoint
)
4848 || ep_is_exception_catchpoint (b
))
4849 && breakpoint_enabled (b
))
4851 b
->enable_state
= bp_call_disabled
;
4852 check_duplicates (b
);
4858 enable_watchpoints_after_interactive_call_stop (void)
4860 struct breakpoint
*b
;
4864 if (((b
->type
== bp_watchpoint
)
4865 || (b
->type
== bp_hardware_watchpoint
)
4866 || (b
->type
== bp_read_watchpoint
)
4867 || (b
->type
== bp_access_watchpoint
)
4868 || ep_is_exception_catchpoint (b
))
4869 && (b
->enable_state
== bp_call_disabled
))
4871 b
->enable_state
= bp_enabled
;
4872 check_duplicates (b
);
4878 /* Set a breakpoint that will evaporate an end of command
4879 at address specified by SAL.
4880 Restrict it to frame FRAME if FRAME is nonzero. */
4883 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_id frame_id
,
4886 struct breakpoint
*b
;
4887 b
= set_raw_breakpoint (sal
, type
);
4888 b
->enable_state
= bp_enabled
;
4889 b
->disposition
= disp_donttouch
;
4890 b
->frame_id
= frame_id
;
4892 /* If we're debugging a multi-threaded program, then we
4893 want momentary breakpoints to be active in only a
4894 single thread of control. */
4895 if (in_thread_list (inferior_ptid
))
4896 b
->thread
= pid_to_thread_id (inferior_ptid
);
4902 /* Tell the user we have just set a breakpoint B. */
4905 mention (struct breakpoint
*b
)
4908 struct cleanup
*old_chain
, *ui_out_chain
;
4909 struct ui_stream
*stb
;
4911 stb
= ui_out_stream_new (uiout
);
4912 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4914 /* FIXME: This is misplaced; mention() is called by things (like
4915 hitting a watchpoint) other than breakpoint creation. It should
4916 be possible to clean this up and at the same time replace the
4917 random calls to breakpoint_changed with this hook, as has already
4918 been done for deprecated_delete_breakpoint_hook and so on. */
4919 if (deprecated_create_breakpoint_hook
)
4920 deprecated_create_breakpoint_hook (b
);
4921 breakpoint_create_event (b
->number
);
4923 if (b
->ops
!= NULL
&& b
->ops
->print_mention
!= NULL
)
4924 b
->ops
->print_mention (b
);
4929 printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b
->number
);
4932 ui_out_text (uiout
, "Watchpoint ");
4933 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4934 ui_out_field_int (uiout
, "number", b
->number
);
4935 ui_out_text (uiout
, ": ");
4936 print_expression (b
->exp
, stb
->stream
);
4937 ui_out_field_stream (uiout
, "exp", stb
);
4938 do_cleanups (ui_out_chain
);
4940 case bp_hardware_watchpoint
:
4941 ui_out_text (uiout
, "Hardware watchpoint ");
4942 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "wpt");
4943 ui_out_field_int (uiout
, "number", b
->number
);
4944 ui_out_text (uiout
, ": ");
4945 print_expression (b
->exp
, stb
->stream
);
4946 ui_out_field_stream (uiout
, "exp", stb
);
4947 do_cleanups (ui_out_chain
);
4949 case bp_read_watchpoint
:
4950 ui_out_text (uiout
, "Hardware read watchpoint ");
4951 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-rwpt");
4952 ui_out_field_int (uiout
, "number", b
->number
);
4953 ui_out_text (uiout
, ": ");
4954 print_expression (b
->exp
, stb
->stream
);
4955 ui_out_field_stream (uiout
, "exp", stb
);
4956 do_cleanups (ui_out_chain
);
4958 case bp_access_watchpoint
:
4959 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4960 ui_out_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "hw-awpt");
4961 ui_out_field_int (uiout
, "number", b
->number
);
4962 ui_out_text (uiout
, ": ");
4963 print_expression (b
->exp
, stb
->stream
);
4964 ui_out_field_stream (uiout
, "exp", stb
);
4965 do_cleanups (ui_out_chain
);
4968 if (ui_out_is_mi_like_p (uiout
))
4973 printf_filtered (_("Breakpoint %d"), b
->number
);
4976 case bp_hardware_breakpoint
:
4977 if (ui_out_is_mi_like_p (uiout
))
4982 printf_filtered (_("Hardware assisted breakpoint %d"), b
->number
);
4986 case bp_catch_unload
:
4987 printf_filtered (_("Catchpoint %d (%s %s)"),
4989 (b
->type
== bp_catch_load
) ? "load" : "unload",
4990 (b
->dll_pathname
!= NULL
) ?
4991 b
->dll_pathname
: "<any library>");
4994 case bp_catch_vfork
:
4995 printf_filtered (_("Catchpoint %d (%s)"),
4997 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
5000 printf_filtered (_("Catchpoint %d (exec)"),
5003 case bp_catch_catch
:
5004 case bp_catch_throw
:
5005 printf_filtered (_("Catchpoint %d (%s)"),
5007 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
5013 case bp_longjmp_resume
:
5014 case bp_step_resume
:
5016 case bp_watchpoint_scope
:
5017 case bp_shlib_event
:
5018 case bp_thread_event
:
5019 case bp_overlay_event
:
5025 /* i18n: cagney/2005-02-11: Below needs to be merged into a
5029 printf_filtered (_(" (%s) pending."), b
->addr_string
);
5033 if (addressprint
|| b
->source_file
== NULL
)
5035 printf_filtered (" at ");
5036 deprecated_print_address_numeric (b
->loc
->address
, 1, gdb_stdout
);
5039 printf_filtered (": file %s, line %d.",
5040 b
->source_file
, b
->line_number
);
5043 do_cleanups (old_chain
);
5044 if (ui_out_is_mi_like_p (uiout
))
5046 printf_filtered ("\n");
5050 /* Add SALS.nelts breakpoints to the breakpoint table. For each
5051 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
5052 COND[i] and COND_STRING[i] values.
5054 The parameter PENDING_BP points to a pending breakpoint that is
5055 the basis of the breakpoints currently being created. The pending
5056 breakpoint may contain a separate condition string or commands
5057 that were added after the initial pending breakpoint was created.
5059 NOTE: If the function succeeds, the caller is expected to cleanup
5060 the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
5061 array contents). If the function fails (error() is called), the
5062 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
5063 COND and SALS arrays and each of those arrays contents. */
5066 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
5067 struct expression
**cond
, char **cond_string
,
5068 enum bptype type
, enum bpdisp disposition
,
5069 int thread
, int ignore_count
, int from_tty
,
5070 struct breakpoint
*pending_bp
)
5072 if (type
== bp_hardware_breakpoint
)
5074 int i
= hw_breakpoint_used_count ();
5075 int target_resources_ok
=
5076 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
5078 if (target_resources_ok
== 0)
5079 error (_("No hardware breakpoint support in the target."));
5080 else if (target_resources_ok
< 0)
5081 error (_("Hardware breakpoints used exceeds limit."));
5084 /* Now set all the breakpoints. */
5087 for (i
= 0; i
< sals
.nelts
; i
++)
5089 struct breakpoint
*b
;
5090 struct symtab_and_line sal
= sals
.sals
[i
];
5093 describe_other_breakpoints (sal
.pc
, sal
.section
, thread
);
5095 b
= set_raw_breakpoint (sal
, type
);
5096 set_breakpoint_count (breakpoint_count
+ 1);
5097 b
->number
= breakpoint_count
;
5101 b
->addr_string
= addr_string
[i
];
5103 /* addr_string has to be used or breakpoint_re_set will delete
5105 b
->addr_string
= xstrprintf ("*0x%s", paddr (b
->loc
->address
));
5106 b
->cond_string
= cond_string
[i
];
5107 b
->ignore_count
= ignore_count
;
5108 b
->enable_state
= bp_enabled
;
5109 b
->disposition
= disposition
;
5110 /* If resolving a pending breakpoint, a check must be made to see if
5111 the user has specified a new condition or commands for the
5112 breakpoint. A new condition will override any condition that was
5113 initially specified with the initial breakpoint command. */
5117 if (pending_bp
->cond_string
)
5119 arg
= pending_bp
->cond_string
;
5120 b
->cond_string
= savestring (arg
, strlen (arg
));
5121 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->loc
->address
), 0);
5123 error (_("Junk at end of pending breakpoint condition expression"));
5125 /* If there are commands associated with the breakpoint, they should
5127 if (pending_bp
->commands
)
5128 b
->commands
= copy_command_lines (pending_bp
->commands
);
5130 /* We have to copy over the ignore_count and thread as well. */
5131 b
->ignore_count
= pending_bp
->ignore_count
;
5132 b
->thread
= pending_bp
->thread
;
5139 /* Parse ARG which is assumed to be a SAL specification possibly
5140 followed by conditionals. On return, SALS contains an array of SAL
5141 addresses found. ADDR_STRING contains a vector of (canonical)
5142 address strings. ARG points to the end of the SAL. */
5145 parse_breakpoint_sals (char **address
,
5146 struct symtabs_and_lines
*sals
,
5147 char ***addr_string
,
5150 char *addr_start
= *address
;
5151 *addr_string
= NULL
;
5152 /* If no arg given, or if first arg is 'if ', use the default
5154 if ((*address
) == NULL
5155 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
5157 if (default_breakpoint_valid
)
5159 struct symtab_and_line sal
;
5160 init_sal (&sal
); /* initialize to zeroes */
5161 sals
->sals
= (struct symtab_and_line
*)
5162 xmalloc (sizeof (struct symtab_and_line
));
5163 sal
.pc
= default_breakpoint_address
;
5164 sal
.line
= default_breakpoint_line
;
5165 sal
.symtab
= default_breakpoint_symtab
;
5166 sal
.section
= find_pc_overlay (sal
.pc
);
5167 sals
->sals
[0] = sal
;
5171 error (_("No default breakpoint address now."));
5175 /* Force almost all breakpoints to be in terms of the
5176 current_source_symtab (which is decode_line_1's default). This
5177 should produce the results we want almost all of the time while
5178 leaving default_breakpoint_* alone.
5179 ObjC: However, don't match an Objective-C method name which
5180 may have a '+' or '-' succeeded by a '[' */
5182 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
5184 if (default_breakpoint_valid
5186 || ((strchr ("+-", (*address
)[0]) != NULL
)
5187 && ((*address
)[1] != '['))))
5188 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
5189 default_breakpoint_line
, addr_string
,
5192 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0,
5193 addr_string
, not_found_ptr
);
5195 /* For any SAL that didn't have a canonical string, fill one in. */
5196 if (sals
->nelts
> 0 && *addr_string
== NULL
)
5197 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
5198 if (addr_start
!= (*address
))
5201 for (i
= 0; i
< sals
->nelts
; i
++)
5203 /* Add the string if not present. */
5204 if ((*addr_string
)[i
] == NULL
)
5205 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
5211 /* Convert each SAL into a real PC. Verify that the PC can be
5212 inserted as a breakpoint. If it can't throw an error. */
5215 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
5219 for (i
= 0; i
< sals
->nelts
; i
++)
5221 resolve_sal_pc (&sals
->sals
[i
]);
5223 /* It's possible for the PC to be nonzero, but still an illegal
5224 value on some targets.
5226 For example, on HP-UX if you start gdb, and before running the
5227 inferior you try to set a breakpoint on a shared library function
5228 "foo" where the inferior doesn't call "foo" directly but does
5229 pass its address to another function call, then we do find a
5230 minimal symbol for the "foo", but it's address is invalid.
5231 (Appears to be an index into a table that the loader sets up
5232 when the inferior is run.)
5234 Give the target a chance to bless sals.sals[i].pc before we
5235 try to make a breakpoint for it. */
5236 #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE
5237 if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals
->sals
[i
].pc
))
5239 if (address
== NULL
)
5240 error (_("Cannot break without a running program."));
5242 error (_("Cannot break on %s without a running program."),
5250 do_captured_parse_breakpoint (struct ui_out
*ui
, void *data
)
5252 struct captured_parse_breakpoint_args
*args
= data
;
5254 parse_breakpoint_sals (args
->arg_p
, args
->sals_p
, args
->addr_string_p
,
5255 args
->not_found_ptr
);
5258 /* Set a breakpoint according to ARG (function, linenum or *address)
5259 flag: first bit : 0 non-temporary, 1 temporary.
5260 second bit : 0 normal breakpoint, 1 hardware breakpoint.
5262 PENDING_BP is non-NULL when this function is being called to resolve
5263 a pending breakpoint. */
5266 break_command_1 (char *arg
, int flag
, int from_tty
, struct breakpoint
*pending_bp
)
5268 struct gdb_exception e
;
5269 int tempflag
, hardwareflag
;
5270 struct symtabs_and_lines sals
;
5271 struct expression
**cond
= 0;
5272 struct symtab_and_line pending_sal
;
5273 char **cond_string
= (char **) NULL
;
5276 char *addr_start
= arg
;
5278 struct cleanup
*old_chain
;
5279 struct cleanup
*breakpoint_chain
= NULL
;
5280 struct captured_parse_breakpoint_args parse_args
;
5284 int ignore_count
= 0;
5287 hardwareflag
= flag
& BP_HARDWAREFLAG
;
5288 tempflag
= flag
& BP_TEMPFLAG
;
5294 parse_args
.arg_p
= &arg
;
5295 parse_args
.sals_p
= &sals
;
5296 parse_args
.addr_string_p
= &addr_string
;
5297 parse_args
.not_found_ptr
= ¬_found
;
5299 e
= catch_exception (uiout
, do_captured_parse_breakpoint
,
5300 &parse_args
, RETURN_MASK_ALL
);
5302 /* If caller is interested in rc value from parse, set value. */
5306 exception_print (gdb_stderr
, e
);
5311 case NOT_FOUND_ERROR
:
5312 /* If called to resolve pending breakpoint, just return
5317 exception_print (gdb_stderr
, e
);
5319 /* If pending breakpoint support is turned off, throw
5322 if (pending_break_support
== AUTO_BOOLEAN_FALSE
)
5323 deprecated_throw_reason (RETURN_ERROR
);
5325 /* If pending breakpoint support is auto query and the user
5326 selects no, then simply return the error code. */
5327 if (pending_break_support
== AUTO_BOOLEAN_AUTO
&&
5328 !nquery ("Make breakpoint pending on future shared library load? "))
5331 /* At this point, either the user was queried about setting
5332 a pending breakpoint and selected yes, or pending
5333 breakpoint behavior is on and thus a pending breakpoint
5334 is defaulted on behalf of the user. */
5335 copy_arg
= xstrdup (addr_start
);
5336 addr_string
= ©_arg
;
5338 sals
.sals
= &pending_sal
;
5343 exception_print (gdb_stderr
, e
);
5351 /* Create a chain of things that always need to be cleaned up. */
5352 old_chain
= make_cleanup (null_cleanup
, 0);
5356 /* Make sure that all storage allocated to SALS gets freed. */
5357 make_cleanup (xfree
, sals
.sals
);
5359 /* Cleanup the addr_string array but not its contents. */
5360 make_cleanup (xfree
, addr_string
);
5363 /* Allocate space for all the cond expressions. */
5364 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
5365 make_cleanup (xfree
, cond
);
5367 /* Allocate space for all the cond strings. */
5368 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
5369 make_cleanup (xfree
, cond_string
);
5371 /* ----------------------------- SNIP -----------------------------
5372 Anything added to the cleanup chain beyond this point is assumed
5373 to be part of a breakpoint. If the breakpoint create succeeds
5374 then the memory is not reclaimed. */
5375 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5377 /* Mark the contents of the addr_string for cleanup. These go on
5378 the breakpoint_chain and only occure if the breakpoint create
5380 for (i
= 0; i
< sals
.nelts
; i
++)
5382 if (addr_string
[i
] != NULL
)
5383 make_cleanup (xfree
, addr_string
[i
]);
5386 /* Resolve all line numbers to PC's and verify that the addresses
5387 are ok for the target. */
5389 breakpoint_sals_to_pc (&sals
, addr_start
);
5391 /* Verify that condition can be parsed, before setting any
5392 breakpoints. Allocate a separate condition expression for each
5394 thread
= -1; /* No specific thread yet */
5397 for (i
= 0; i
< sals
.nelts
; i
++)
5404 char *cond_start
= NULL
;
5405 char *cond_end
= NULL
;
5406 while (*tok
== ' ' || *tok
== '\t')
5411 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5414 toklen
= end_tok
- tok
;
5416 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5418 tok
= cond_start
= end_tok
+ 1;
5419 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
),
5421 make_cleanup (xfree
, cond
[i
]);
5423 cond_string
[i
] = savestring (cond_start
,
5424 cond_end
- cond_start
);
5425 make_cleanup (xfree
, cond_string
[i
]);
5427 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
5433 thread
= strtol (tok
, &tok
, 0);
5435 error (_("Junk after thread keyword."));
5436 if (!valid_thread_id (thread
))
5437 error (_("Unknown thread %d."), thread
);
5440 error (_("Junk at end of arguments."));
5443 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
5444 hardwareflag
? bp_hardware_breakpoint
5446 tempflag
? disp_del
: disp_donttouch
,
5447 thread
, ignore_count
, from_tty
,
5452 struct symtab_and_line sal
;
5453 struct breakpoint
*b
;
5458 make_cleanup (xfree
, copy_arg
);
5460 b
= set_raw_breakpoint (sal
, hardwareflag
? bp_hardware_breakpoint
5462 set_breakpoint_count (breakpoint_count
+ 1);
5463 b
->number
= breakpoint_count
;
5466 b
->addr_string
= *addr_string
;
5467 b
->cond_string
= *cond_string
;
5468 b
->ignore_count
= ignore_count
;
5470 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
5471 b
->from_tty
= from_tty
;
5477 warning (_("Multiple breakpoints were set.\n"
5478 "Use the \"delete\" command to delete unwanted breakpoints."));
5479 /* That's it. Discard the cleanups for data inserted into the
5481 discard_cleanups (breakpoint_chain
);
5482 /* But cleanup everything else. */
5483 do_cleanups (old_chain
);
5488 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
5489 linenum or *address) with COND and IGNORE_COUNT. */
5491 struct captured_breakpoint_args
5502 do_captured_breakpoint (struct ui_out
*uiout
, void *data
)
5504 struct captured_breakpoint_args
*args
= data
;
5505 struct symtabs_and_lines sals
;
5506 struct expression
**cond
;
5507 struct cleanup
*old_chain
;
5508 struct cleanup
*breakpoint_chain
= NULL
;
5515 /* Parse the source and lines spec. Delay check that the expression
5516 didn't contain trailing garbage until after cleanups are in
5520 address_end
= args
->address
;
5522 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
, 0);
5527 /* Create a chain of things at always need to be cleaned up. */
5528 old_chain
= make_cleanup (null_cleanup
, 0);
5530 /* Always have a addr_string array, even if it is empty. */
5531 make_cleanup (xfree
, addr_string
);
5533 /* Make sure that all storage allocated to SALS gets freed. */
5534 make_cleanup (xfree
, sals
.sals
);
5536 /* Allocate space for all the cond expressions. */
5537 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
5538 make_cleanup (xfree
, cond
);
5540 /* Allocate space for all the cond strings. */
5541 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
5542 make_cleanup (xfree
, cond_string
);
5544 /* ----------------------------- SNIP -----------------------------
5545 Anything added to the cleanup chain beyond this point is assumed
5546 to be part of a breakpoint. If the breakpoint create goes
5547 through then that memory is not cleaned up. */
5548 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
5550 /* Mark the contents of the addr_string for cleanup. These go on
5551 the breakpoint_chain and only occure if the breakpoint create
5553 for (i
= 0; i
< sals
.nelts
; i
++)
5555 if (addr_string
[i
] != NULL
)
5556 make_cleanup (xfree
, addr_string
[i
]);
5559 /* Wait until now before checking for garbage at the end of the
5560 address. That way cleanups can take care of freeing any
5562 if (*address_end
!= '\0')
5563 error (_("Garbage %s following breakpoint address"), address_end
);
5565 /* Resolve all line numbers to PC's. */
5566 breakpoint_sals_to_pc (&sals
, args
->address
);
5568 /* Verify that conditions can be parsed, before setting any
5570 for (i
= 0; i
< sals
.nelts
; i
++)
5572 if (args
->condition
!= NULL
)
5574 char *tok
= args
->condition
;
5575 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
5577 error (_("Garbage %s follows condition"), tok
);
5578 make_cleanup (xfree
, cond
[i
]);
5579 cond_string
[i
] = xstrdup (args
->condition
);
5583 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
5584 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
5585 args
->tempflag
? disp_del
: disp_donttouch
,
5586 args
->thread
, args
->ignore_count
, 0/*from-tty*/,
5587 NULL
/*pending_bp*/);
5589 /* That's it. Discard the cleanups for data inserted into the
5591 discard_cleanups (breakpoint_chain
);
5592 /* But cleanup everything else. */
5593 do_cleanups (old_chain
);
5598 gdb_breakpoint (char *address
, char *condition
,
5599 int hardwareflag
, int tempflag
,
5600 int thread
, int ignore_count
,
5601 char **error_message
)
5603 struct captured_breakpoint_args args
;
5604 args
.address
= address
;
5605 args
.condition
= condition
;
5606 args
.hardwareflag
= hardwareflag
;
5607 args
.tempflag
= tempflag
;
5608 args
.thread
= thread
;
5609 args
.ignore_count
= ignore_count
;
5610 if (catch_exceptions_with_msg (uiout
, do_captured_breakpoint
, &args
,
5611 error_message
, RETURN_MASK_ALL
) < 0)
5618 /* Helper function for break_command_1 and disassemble_command. */
5621 resolve_sal_pc (struct symtab_and_line
*sal
)
5625 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5627 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5628 error (_("No line %d in file \"%s\"."),
5629 sal
->line
, sal
->symtab
->filename
);
5633 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5635 struct blockvector
*bv
;
5640 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
5643 b
= BLOCKVECTOR_BLOCK (bv
, index
);
5644 sym
= block_function (b
);
5647 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5648 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5652 /* It really is worthwhile to have the section, so we'll just
5653 have to look harder. This case can be executed if we have
5654 line numbers but no functions (as can happen in assembly
5657 struct minimal_symbol
*msym
;
5659 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5661 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5668 break_command (char *arg
, int from_tty
)
5670 break_command_1 (arg
, 0, from_tty
, NULL
);
5674 tbreak_command (char *arg
, int from_tty
)
5676 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
, NULL
);
5680 hbreak_command (char *arg
, int from_tty
)
5682 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
, NULL
);
5686 thbreak_command (char *arg
, int from_tty
)
5688 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
, NULL
);
5692 stop_command (char *arg
, int from_tty
)
5694 printf_filtered (_("Specify the type of breakpoint to set.\n\
5695 Usage: stop in <function | address>\n\
5696 stop at <line>\n"));
5700 stopin_command (char *arg
, int from_tty
)
5704 if (arg
== (char *) NULL
)
5706 else if (*arg
!= '*')
5711 /* look for a ':'. If this is a line number specification, then
5712 say it is bad, otherwise, it should be an address or
5713 function/method name */
5714 while (*argptr
&& !hasColon
)
5716 hasColon
= (*argptr
== ':');
5721 badInput
= (*argptr
!= ':'); /* Not a class::method */
5723 badInput
= isdigit (*arg
); /* a simple line number */
5727 printf_filtered (_("Usage: stop in <function | address>\n"));
5729 break_command_1 (arg
, 0, from_tty
, NULL
);
5733 stopat_command (char *arg
, int from_tty
)
5737 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5744 /* look for a ':'. If there is a '::' then get out, otherwise
5745 it is probably a line number. */
5746 while (*argptr
&& !hasColon
)
5748 hasColon
= (*argptr
== ':');
5753 badInput
= (*argptr
== ':'); /* we have class::method */
5755 badInput
= !isdigit (*arg
); /* not a line number */
5759 printf_filtered (_("Usage: stop at <line>\n"));
5761 break_command_1 (arg
, 0, from_tty
, NULL
);
5764 /* accessflag: hw_write: watch write,
5765 hw_read: watch read,
5766 hw_access: watch access (read or write) */
5768 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5770 struct breakpoint
*b
;
5771 struct symtab_and_line sal
;
5772 struct expression
*exp
;
5773 struct block
*exp_valid_block
;
5774 struct value
*val
, *mark
;
5775 struct frame_info
*frame
;
5776 struct frame_info
*prev_frame
= NULL
;
5777 char *exp_start
= NULL
;
5778 char *exp_end
= NULL
;
5779 char *tok
, *end_tok
;
5781 char *cond_start
= NULL
;
5782 char *cond_end
= NULL
;
5783 struct expression
*cond
= NULL
;
5784 int i
, other_type_used
, target_resources_ok
= 0;
5785 enum bptype bp_type
;
5788 init_sal (&sal
); /* initialize to zeroes */
5790 /* Parse arguments. */
5791 innermost_block
= NULL
;
5793 exp
= parse_exp_1 (&arg
, 0, 0);
5795 exp_valid_block
= innermost_block
;
5796 mark
= value_mark ();
5797 val
= evaluate_expression (exp
);
5798 release_value (val
);
5799 if (value_lazy (val
))
5800 value_fetch_lazy (val
);
5803 while (*tok
== ' ' || *tok
== '\t')
5807 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5810 toklen
= end_tok
- tok
;
5811 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5813 tok
= cond_start
= end_tok
+ 1;
5814 cond
= parse_exp_1 (&tok
, 0, 0);
5818 error (_("Junk at end of command."));
5820 if (accessflag
== hw_read
)
5821 bp_type
= bp_read_watchpoint
;
5822 else if (accessflag
== hw_access
)
5823 bp_type
= bp_access_watchpoint
;
5825 bp_type
= bp_hardware_watchpoint
;
5827 mem_cnt
= can_use_hardware_watchpoint (val
);
5828 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5829 error (_("Expression cannot be implemented with read/access watchpoint."));
5832 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5833 target_resources_ok
=
5834 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5836 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5837 error (_("Target does not support this type of hardware watchpoint."));
5839 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5840 error (_("Target can only support one kind of HW watchpoint at a time."));
5843 #if defined(HPUXHPPA)
5844 /* On HP-UX if you set a h/w
5845 watchpoint before the "run" command, the inferior dies with a e.g.,
5846 SIGILL once you start it. I initially believed this was due to a
5847 bad interaction between page protection traps and the initial
5848 startup sequence by the dynamic linker.
5850 However, I tried avoiding that by having HP-UX's implementation of
5851 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid
5852 yet, which forced slow watches before a "run" or "attach", and it
5853 still fails somewhere in the startup code.
5855 Until I figure out what's happening, I'm disallowing watches altogether
5856 before the "run" or "attach" command. We'll tell the user they must
5857 set watches after getting the program started. */
5858 if (!target_has_execution
)
5860 warning (_("can't do that without a running program; try \"break main\"), \"run\" first");
5863 #endif /* HPUXHPPA */
5865 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5866 watchpoint could not be set. */
5867 if (!mem_cnt
|| target_resources_ok
<= 0)
5868 bp_type
= bp_watchpoint
;
5870 /* Now set up the breakpoint. */
5871 b
= set_raw_breakpoint (sal
, bp_type
);
5872 set_breakpoint_count (breakpoint_count
+ 1);
5873 b
->number
= breakpoint_count
;
5874 b
->disposition
= disp_donttouch
;
5876 b
->exp_valid_block
= exp_valid_block
;
5877 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5881 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5885 frame
= block_innermost_frame (exp_valid_block
);
5888 prev_frame
= get_prev_frame (frame
);
5889 b
->watchpoint_frame
= get_frame_id (frame
);
5893 memset (&b
->watchpoint_frame
, 0, sizeof (b
->watchpoint_frame
));
5896 /* If the expression is "local", then set up a "watchpoint scope"
5897 breakpoint at the point where we've left the scope of the watchpoint
5899 if (innermost_block
)
5903 struct breakpoint
*scope_breakpoint
;
5904 scope_breakpoint
= create_internal_breakpoint (get_frame_pc (prev_frame
),
5905 bp_watchpoint_scope
);
5907 scope_breakpoint
->enable_state
= bp_enabled
;
5909 /* Automatically delete the breakpoint when it hits. */
5910 scope_breakpoint
->disposition
= disp_del
;
5912 /* Only break in the proper frame (help with recursion). */
5913 scope_breakpoint
->frame_id
= get_frame_id (prev_frame
);
5915 /* Set the address at which we will stop. */
5916 scope_breakpoint
->loc
->requested_address
5917 = get_frame_pc (prev_frame
);
5918 scope_breakpoint
->loc
->address
5919 = adjust_breakpoint_address (scope_breakpoint
->loc
->requested_address
,
5920 scope_breakpoint
->type
);
5922 /* The scope breakpoint is related to the watchpoint. We
5923 will need to act on them together. */
5924 b
->related_breakpoint
= scope_breakpoint
;
5927 value_free_to_mark (mark
);
5931 /* Return count of locations need to be watched and can be handled
5932 in hardware. If the watchpoint can not be handled
5933 in hardware return zero. */
5936 can_use_hardware_watchpoint (struct value
*v
)
5938 int found_memory_cnt
= 0;
5939 struct value
*head
= v
;
5941 /* Did the user specifically forbid us to use hardware watchpoints? */
5942 if (!can_use_hw_watchpoints
)
5945 /* Make sure that the value of the expression depends only upon
5946 memory contents, and values computed from them within GDB. If we
5947 find any register references or function calls, we can't use a
5948 hardware watchpoint.
5950 The idea here is that evaluating an expression generates a series
5951 of values, one holding the value of every subexpression. (The
5952 expression a*b+c has five subexpressions: a, b, a*b, c, and
5953 a*b+c.) GDB's values hold almost enough information to establish
5954 the criteria given above --- they identify memory lvalues,
5955 register lvalues, computed values, etcetera. So we can evaluate
5956 the expression, and then scan the chain of values that leaves
5957 behind to decide whether we can detect any possible change to the
5958 expression's final value using only hardware watchpoints.
5960 However, I don't think that the values returned by inferior
5961 function calls are special in any way. So this function may not
5962 notice that an expression involving an inferior function call
5963 can't be watched with hardware watchpoints. FIXME. */
5964 for (; v
; v
= value_next (v
))
5966 if (VALUE_LVAL (v
) == lval_memory
)
5969 /* A lazy memory lvalue is one that GDB never needed to fetch;
5970 we either just used its address (e.g., `a' in `a.b') or
5971 we never needed it at all (e.g., `a' in `a,b'). */
5975 /* Ahh, memory we actually used! Check if we can cover
5976 it with hardware watchpoints. */
5977 struct type
*vtype
= check_typedef (value_type (v
));
5979 /* We only watch structs and arrays if user asked for it
5980 explicitly, never if they just happen to appear in a
5981 middle of some value chain. */
5983 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5984 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5986 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + value_offset (v
);
5987 int len
= TYPE_LENGTH (value_type (v
));
5989 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5996 else if (VALUE_LVAL (v
) != not_lval
5997 && deprecated_value_modifiable (v
) == 0)
5998 return 0; /* ??? What does this represent? */
5999 else if (VALUE_LVAL (v
) == lval_register
)
6000 return 0; /* cannot watch a register with a HW watchpoint */
6003 /* The expression itself looks suitable for using a hardware
6004 watchpoint, but give the target machine a chance to reject it. */
6005 return found_memory_cnt
;
6009 watch_command_wrapper (char *arg
, int from_tty
)
6011 watch_command (arg
, from_tty
);
6015 watch_command (char *arg
, int from_tty
)
6017 watch_command_1 (arg
, hw_write
, from_tty
);
6021 rwatch_command_wrapper (char *arg
, int from_tty
)
6023 rwatch_command (arg
, from_tty
);
6027 rwatch_command (char *arg
, int from_tty
)
6029 watch_command_1 (arg
, hw_read
, from_tty
);
6033 awatch_command_wrapper (char *arg
, int from_tty
)
6035 awatch_command (arg
, from_tty
);
6039 awatch_command (char *arg
, int from_tty
)
6041 watch_command_1 (arg
, hw_access
, from_tty
);
6045 /* Helper routines for the until_command routine in infcmd.c. Here
6046 because it uses the mechanisms of breakpoints. */
6048 /* This function is called by fetch_inferior_event via the
6049 cmd_continuation pointer, to complete the until command. It takes
6050 care of cleaning up the temporary breakpoints set up by the until
6053 until_break_command_continuation (struct continuation_arg
*arg
)
6055 struct cleanup
*cleanups
;
6057 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
6058 do_exec_cleanups (cleanups
);
6062 until_break_command (char *arg
, int from_tty
, int anywhere
)
6064 struct symtabs_and_lines sals
;
6065 struct symtab_and_line sal
;
6066 struct frame_info
*frame
= get_selected_frame (NULL
);
6067 struct frame_info
*prev_frame
= get_prev_frame (frame
);
6068 struct breakpoint
*breakpoint
;
6069 struct cleanup
*old_chain
;
6070 struct continuation_arg
*arg1
;
6073 clear_proceed_status ();
6075 /* Set a breakpoint where the user wants it and at return from
6078 if (default_breakpoint_valid
)
6079 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
6080 default_breakpoint_line
, (char ***) NULL
, NULL
);
6082 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
6083 0, (char ***) NULL
, NULL
);
6085 if (sals
.nelts
!= 1)
6086 error (_("Couldn't get information on specified line."));
6089 xfree (sals
.sals
); /* malloc'd, so freed */
6092 error (_("Junk at end of arguments."));
6094 resolve_sal_pc (&sal
);
6097 /* If the user told us to continue until a specified location,
6098 we don't specify a frame at which we need to stop. */
6099 breakpoint
= set_momentary_breakpoint (sal
, null_frame_id
, bp_until
);
6101 /* Otherwise, specify the current frame, because we want to stop only
6102 at the very same frame. */
6103 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
),
6106 if (!target_can_async_p ())
6107 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
6109 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
6111 /* If we are running asynchronously, and the target supports async
6112 execution, we are not waiting for the target to stop, in the call
6113 tp proceed, below. This means that we cannot delete the
6114 brekpoints until the target has actually stopped. The only place
6115 where we get a chance to do that is in fetch_inferior_event, so
6116 we must set things up for that. */
6118 if (target_can_async_p ())
6120 /* In this case the arg for the continuation is just the point
6121 in the exec_cleanups chain from where to start doing
6122 cleanups, because all the continuation does is the cleanups in
6123 the exec_cleanup_chain. */
6125 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
6127 arg1
->data
.pointer
= old_chain
;
6129 add_continuation (until_break_command_continuation
, arg1
);
6132 /* Keep within the current frame, or in frames called by the current
6136 sal
= find_pc_line (get_frame_pc (prev_frame
), 0);
6137 sal
.pc
= get_frame_pc (prev_frame
);
6138 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (prev_frame
),
6140 if (!target_can_async_p ())
6141 make_cleanup_delete_breakpoint (breakpoint
);
6143 make_exec_cleanup_delete_breakpoint (breakpoint
);
6146 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
6147 /* Do the cleanups now, anly if we are not running asynchronously,
6148 of if we are, but the target is still synchronous. */
6149 if (!target_can_async_p ())
6150 do_cleanups (old_chain
);
6154 ep_skip_leading_whitespace (char **s
)
6156 if ((s
== NULL
) || (*s
== NULL
))
6158 while (isspace (**s
))
6162 /* This function examines a string, and attempts to find a token
6163 that might be an event name in the leading characters. If a
6164 possible match is found, a pointer to the last character of
6165 the token is returned. Else, NULL is returned. */
6168 ep_find_event_name_end (char *arg
)
6171 char *event_name_end
= NULL
;
6173 /* If we could depend upon the presense of strrpbrk, we'd use that... */
6177 /* We break out of the loop when we find a token delimiter.
6178 Basically, we're looking for alphanumerics and underscores;
6179 anything else delimites the token. */
6182 if (!isalnum (*s
) && (*s
!= '_'))
6188 return event_name_end
;
6192 /* This function attempts to parse an optional "if <cond>" clause
6193 from the arg string. If one is not found, it returns NULL.
6195 Else, it returns a pointer to the condition string. (It does not
6196 attempt to evaluate the string against a particular block.) And,
6197 it updates arg to point to the first character following the parsed
6198 if clause in the arg string. */
6201 ep_parse_optional_if_clause (char **arg
)
6205 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
6208 /* Skip the "if" keyword. */
6211 /* Skip any extra leading whitespace, and record the start of the
6212 condition string. */
6213 ep_skip_leading_whitespace (arg
);
6216 /* Assume that the condition occupies the remainder of the arg string. */
6217 (*arg
) += strlen (cond_string
);
6222 /* This function attempts to parse an optional filename from the arg
6223 string. If one is not found, it returns NULL.
6225 Else, it returns a pointer to the parsed filename. (This function
6226 makes no attempt to verify that a file of that name exists, or is
6227 accessible.) And, it updates arg to point to the first character
6228 following the parsed filename in the arg string.
6230 Note that clients needing to preserve the returned filename for
6231 future access should copy it to their own buffers. */
6233 ep_parse_optional_filename (char **arg
)
6235 static char filename
[1024];
6240 if ((*arg_p
== '\0') || isspace (*arg_p
))
6258 /* Commands to deal with catching events, such as signals, exceptions,
6259 process start/exit, etc. */
6263 catch_fork
, catch_vfork
6268 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6271 char *cond_string
= NULL
;
6273 ep_skip_leading_whitespace (&arg
);
6275 /* The allowed syntax is:
6277 catch [v]fork 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 a fork or vfork catchpoint
6286 and enable reporting of such events. */
6290 create_fork_event_catchpoint (tempflag
, cond_string
);
6293 create_vfork_event_catchpoint (tempflag
, cond_string
);
6296 error (_("unsupported or unknown fork kind; cannot catch it"));
6302 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6304 char *cond_string
= NULL
;
6306 ep_skip_leading_whitespace (&arg
);
6308 /* The allowed syntax is:
6310 catch exec if <cond>
6312 First, check if there's an if clause. */
6313 cond_string
= ep_parse_optional_if_clause (&arg
);
6315 if ((*arg
!= '\0') && !isspace (*arg
))
6316 error (_("Junk at end of arguments."));
6318 /* If this target supports it, create an exec catchpoint
6319 and enable reporting of such events. */
6320 create_exec_event_catchpoint (tempflag
, cond_string
);
6324 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6326 char *dll_pathname
= NULL
;
6327 char *cond_string
= NULL
;
6329 ep_skip_leading_whitespace (&arg
);
6331 /* The allowed syntax is:
6333 catch load if <cond>
6334 catch load <filename>
6335 catch load <filename> if <cond>
6337 The user is not allowed to specify the <filename> after an
6340 We'll ignore the pathological case of a file named "if".
6342 First, check if there's an if clause. If so, then there
6343 cannot be a filename. */
6344 cond_string
= ep_parse_optional_if_clause (&arg
);
6346 /* If there was an if clause, then there cannot be a filename.
6347 Else, there might be a filename and an if clause. */
6348 if (cond_string
== NULL
)
6350 dll_pathname
= ep_parse_optional_filename (&arg
);
6351 ep_skip_leading_whitespace (&arg
);
6352 cond_string
= ep_parse_optional_if_clause (&arg
);
6355 if ((*arg
!= '\0') && !isspace (*arg
))
6356 error (_("Junk at end of arguments."));
6358 /* Create a load breakpoint that only triggers when a load of
6359 the specified dll (or any dll, if no pathname was specified)
6361 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6362 dll_pathname
, cond_string
);
6366 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6368 char *dll_pathname
= NULL
;
6369 char *cond_string
= NULL
;
6371 ep_skip_leading_whitespace (&arg
);
6373 /* The allowed syntax is:
6375 catch unload if <cond>
6376 catch unload <filename>
6377 catch unload <filename> if <cond>
6379 The user is not allowed to specify the <filename> after an
6382 We'll ignore the pathological case of a file named "if".
6384 First, check if there's an if clause. If so, then there
6385 cannot be a filename. */
6386 cond_string
= ep_parse_optional_if_clause (&arg
);
6388 /* If there was an if clause, then there cannot be a filename.
6389 Else, there might be a filename and an if clause. */
6390 if (cond_string
== NULL
)
6392 dll_pathname
= ep_parse_optional_filename (&arg
);
6393 ep_skip_leading_whitespace (&arg
);
6394 cond_string
= ep_parse_optional_if_clause (&arg
);
6397 if ((*arg
!= '\0') && !isspace (*arg
))
6398 error (_("Junk at end of arguments."));
6400 /* Create an unload breakpoint that only triggers when an unload of
6401 the specified dll (or any dll, if no pathname was specified)
6403 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6404 dll_pathname
, cond_string
);
6407 /* Commands to deal with catching exceptions. */
6409 /* Set a breakpoint at the specified callback routine for an
6410 exception event callback */
6413 create_exception_catchpoint (int tempflag
, char *cond_string
,
6414 enum exception_event_kind ex_event
,
6415 struct symtab_and_line
*sal
)
6417 struct breakpoint
*b
;
6418 int thread
= -1; /* All threads. */
6421 if (!sal
) /* no exception support? */
6426 case EX_EVENT_THROW
:
6427 bptype
= bp_catch_throw
;
6429 case EX_EVENT_CATCH
:
6430 bptype
= bp_catch_catch
;
6432 default: /* error condition */
6433 error (_("Internal error -- invalid catchpoint kind"));
6436 b
= set_raw_breakpoint (*sal
, bptype
);
6437 set_breakpoint_count (breakpoint_count
+ 1);
6438 b
->number
= breakpoint_count
;
6440 b
->cond_string
= (cond_string
== NULL
) ?
6441 NULL
: savestring (cond_string
, strlen (cond_string
));
6443 b
->addr_string
= NULL
;
6444 b
->enable_state
= bp_enabled
;
6445 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6449 static enum print_stop_action
6450 print_exception_catchpoint (struct breakpoint
*b
)
6452 annotate_catchpoint (b
->number
);
6454 if (strstr (b
->addr_string
, "throw") != NULL
)
6455 printf_filtered (_("\nCatchpoint %d (exception thrown)\n"),
6458 printf_filtered (_("\nCatchpoint %d (exception caught)\n"),
6461 return PRINT_SRC_AND_LOC
;
6465 print_one_exception_catchpoint (struct breakpoint
*b
, CORE_ADDR
*last_addr
)
6470 ui_out_field_core_addr (uiout
, "addr", b
->loc
->address
);
6473 *last_addr
= b
->loc
->address
;
6474 if (strstr (b
->addr_string
, "throw") != NULL
)
6475 ui_out_field_string (uiout
, "what", "exception throw");
6477 ui_out_field_string (uiout
, "what", "exception catch");
6481 print_mention_exception_catchpoint (struct breakpoint
*b
)
6483 if (strstr (b
->addr_string
, "throw") != NULL
)
6484 printf_filtered (_("Catchpoint %d (throw)"), b
->number
);
6486 printf_filtered (_("Catchpoint %d (catch)"), b
->number
);
6489 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops
= {
6490 print_exception_catchpoint
,
6491 print_one_exception_catchpoint
,
6492 print_mention_exception_catchpoint
6496 handle_gnu_v3_exceptions (int tempflag
, char *cond_string
,
6497 enum exception_event_kind ex_event
, int from_tty
)
6499 char *trigger_func_name
, *nameptr
;
6500 struct symtabs_and_lines sals
;
6501 struct breakpoint
*b
;
6503 if (ex_event
== EX_EVENT_CATCH
)
6504 trigger_func_name
= xstrdup ("__cxa_begin_catch");
6506 trigger_func_name
= xstrdup ("__cxa_throw");
6508 nameptr
= trigger_func_name
;
6509 sals
= decode_line_1 (&nameptr
, 1, NULL
, 0, NULL
, NULL
);
6510 if (sals
.nelts
== 0)
6512 xfree (trigger_func_name
);
6516 b
= set_raw_breakpoint (sals
.sals
[0], bp_breakpoint
);
6517 set_breakpoint_count (breakpoint_count
+ 1);
6518 b
->number
= breakpoint_count
;
6520 b
->cond_string
= (cond_string
== NULL
) ?
6521 NULL
: savestring (cond_string
, strlen (cond_string
));
6523 b
->addr_string
= trigger_func_name
;
6524 b
->enable_state
= bp_enabled
;
6525 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6526 b
->ops
= &gnu_v3_exception_catchpoint_ops
;
6533 /* Deal with "catch catch" and "catch throw" commands */
6536 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6537 int tempflag
, int from_tty
)
6539 char *cond_string
= NULL
;
6540 struct symtab_and_line
*sal
= NULL
;
6542 ep_skip_leading_whitespace (&arg
);
6544 cond_string
= ep_parse_optional_if_clause (&arg
);
6546 if ((*arg
!= '\0') && !isspace (*arg
))
6547 error (_("Junk at end of arguments."));
6549 if ((ex_event
!= EX_EVENT_THROW
) &&
6550 (ex_event
!= EX_EVENT_CATCH
))
6551 error (_("Unsupported or unknown exception event; cannot catch it"));
6553 if (handle_gnu_v3_exceptions (tempflag
, cond_string
, ex_event
, from_tty
))
6556 /* See if we can find a callback routine */
6557 sal
= target_enable_exception_callback (ex_event
, 1);
6561 /* We have callbacks from the runtime system for exceptions.
6562 Set a breakpoint on the sal found, if no errors */
6563 if (sal
!= (struct symtab_and_line
*) -1)
6564 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
6566 return; /* something went wrong with setting up callbacks */
6569 warning (_("Unsupported with this platform/compiler combination."));
6572 /* Create a breakpoint struct for Ada exception catchpoints. */
6575 create_ada_exception_breakpoint (struct symtab_and_line sal
,
6579 struct expression
*cond
,
6580 struct breakpoint_ops
*ops
,
6584 struct breakpoint
*b
;
6588 describe_other_breakpoints (sal
.pc
, sal
.section
, -1);
6589 /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
6590 version for exception catchpoints, because two catchpoints
6591 used for different exception names will use the same address.
6592 In this case, a "breakpoint ... also set at..." warning is
6593 unproductive. Besides. the warning phrasing is also a bit
6594 inapropriate, we should use the word catchpoint, and tell
6595 the user what type of catchpoint it is. The above is good
6596 enough for now, though. */
6599 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6600 set_breakpoint_count (breakpoint_count
+ 1);
6602 b
->enable_state
= bp_enabled
;
6603 b
->disposition
= tempflag
? disp_del
: disp_donttouch
;
6604 b
->number
= breakpoint_count
;
6605 b
->ignore_count
= 0;
6607 b
->addr_string
= addr_string
;
6608 b
->language
= language_ada
;
6609 b
->cond_string
= cond_string
;
6610 b
->exp_string
= exp_string
;
6613 b
->from_tty
= from_tty
;
6618 /* Implement the "catch exception" command. */
6621 catch_ada_exception_command (char *arg
, int tempflag
, int from_tty
)
6623 struct symtab_and_line sal
;
6625 char *addr_string
= NULL
;
6626 char *exp_string
= NULL
;
6627 char *cond_string
= NULL
;
6628 struct expression
*cond
= NULL
;
6629 struct breakpoint_ops
*ops
= NULL
;
6631 sal
= ada_decode_exception_location (arg
, &addr_string
, &exp_string
,
6632 &cond_string
, &cond
, &ops
);
6633 create_ada_exception_breakpoint (sal
, addr_string
, exp_string
,
6634 cond_string
, cond
, ops
, tempflag
,
6638 /* Implement the "catch assert" command. */
6641 catch_assert_command (char *arg
, int tempflag
, int from_tty
)
6643 struct symtab_and_line sal
;
6644 char *addr_string
= NULL
;
6645 struct breakpoint_ops
*ops
= NULL
;
6647 sal
= ada_decode_assert_location (arg
, &addr_string
, &ops
);
6648 create_ada_exception_breakpoint (sal
, addr_string
, NULL
, NULL
, NULL
, ops
,
6649 tempflag
, from_tty
);
6652 /* Cover routine to allow wrapping target_enable_exception_catchpoints
6653 inside a catch_errors */
6656 cover_target_enable_exception_callback (void *arg
)
6658 args_for_catchpoint_enable
*args
= arg
;
6659 struct symtab_and_line
*sal
;
6660 sal
= target_enable_exception_callback (args
->kind
, args
->enable_p
);
6663 else if (sal
== (struct symtab_and_line
*) -1)
6666 return 1; /*is valid */
6670 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6673 /* The first argument may be an event name, such as "start" or "load".
6674 If so, then handle it as such. If it doesn't match an event name,
6675 then attempt to interpret it as an exception name. (This latter is
6676 the v4.16-and-earlier GDB meaning of the "catch" command.)
6678 First, try to find the bounds of what might be an event name. */
6679 char *arg1_start
= arg
;
6683 if (arg1_start
== NULL
)
6685 /* Old behaviour was to use pre-v-4.16 syntax */
6686 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6688 /* Now, this is not allowed */
6689 error (_("Catch requires an event name."));
6692 arg1_end
= ep_find_event_name_end (arg1_start
);
6693 if (arg1_end
== NULL
)
6694 error (_("catch requires an event"));
6695 arg1_length
= arg1_end
+ 1 - arg1_start
;
6697 /* Try to match what we found against known event names. */
6698 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6700 error (_("Catch of signal not yet implemented"));
6702 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6704 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6705 tempflag
, from_tty
);
6707 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6709 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6710 tempflag
, from_tty
);
6712 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6714 error (_("Catch of thread_start not yet implemented"));
6716 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6718 error (_("Catch of thread_exit not yet implemented"));
6720 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6722 error (_("Catch of thread_join not yet implemented"));
6724 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6726 error (_("Catch of start not yet implemented"));
6728 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6730 error (_("Catch of exit not yet implemented"));
6732 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6734 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6736 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6738 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6740 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6742 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6744 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6746 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6748 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6750 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6752 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6754 error (_("Catch of stop not yet implemented"));
6756 else if (strncmp (arg1_start
, "exception", arg1_length
) == 0)
6758 catch_ada_exception_command (arg1_end
+ 1, tempflag
, from_tty
);
6761 else if (strncmp (arg1_start
, "assert", arg1_length
) == 0)
6763 catch_assert_command (arg1_end
+ 1, tempflag
, from_tty
);
6766 /* This doesn't appear to be an event name */
6770 /* Pre-v.4.16 behaviour was to treat the argument
6771 as the name of an exception */
6772 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6773 /* Now this is not allowed */
6774 error (_("Unknown event kind specified for catch"));
6779 /* Used by the gui, could be made a worker for other things. */
6782 set_breakpoint_sal (struct symtab_and_line sal
)
6784 struct breakpoint
*b
;
6785 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6786 set_breakpoint_count (breakpoint_count
+ 1);
6787 b
->number
= breakpoint_count
;
6794 catch_command (char *arg
, int from_tty
)
6796 catch_command_1 (arg
, 0, from_tty
);
6801 tcatch_command (char *arg
, int from_tty
)
6803 catch_command_1 (arg
, 1, from_tty
);
6806 /* Delete breakpoints by address or line. */
6809 clear_command (char *arg
, int from_tty
)
6811 struct breakpoint
*b
, *tmp
, *prev
, *found
;
6813 struct symtabs_and_lines sals
;
6814 struct symtab_and_line sal
;
6819 sals
= decode_line_spec (arg
, 1);
6824 sals
.sals
= (struct symtab_and_line
*)
6825 xmalloc (sizeof (struct symtab_and_line
));
6826 make_cleanup (xfree
, sals
.sals
);
6827 init_sal (&sal
); /* initialize to zeroes */
6828 sal
.line
= default_breakpoint_line
;
6829 sal
.symtab
= default_breakpoint_symtab
;
6830 sal
.pc
= default_breakpoint_address
;
6831 if (sal
.symtab
== 0)
6832 error (_("No source file specified."));
6840 /* For each line spec given, delete bps which correspond
6841 to it. Do it in two passes, solely to preserve the current
6842 behavior that from_tty is forced true if we delete more than
6846 for (i
= 0; i
< sals
.nelts
; i
++)
6848 /* If exact pc given, clear bpts at that pc.
6849 If line given (pc == 0), clear all bpts on specified line.
6850 If defaulting, clear all bpts on default line
6853 defaulting sal.pc != 0 tests to do
6858 1 0 <can't happen> */
6863 /* Find all matching breakpoints, remove them from the
6864 breakpoint chain, and add them to the 'found' chain. */
6865 ALL_BREAKPOINTS_SAFE (b
, tmp
)
6867 /* Are we going to delete b? */
6868 if (b
->type
!= bp_none
6869 && b
->type
!= bp_watchpoint
6870 && b
->type
!= bp_hardware_watchpoint
6871 && b
->type
!= bp_read_watchpoint
6872 && b
->type
!= bp_access_watchpoint
6873 /* Not if b is a watchpoint of any sort... */
6874 && (((sal
.pc
&& (b
->loc
->address
== sal
.pc
))
6875 && (!section_is_overlay (b
->loc
->section
)
6876 || b
->loc
->section
== sal
.section
))
6877 /* Yes, if sal.pc matches b (modulo overlays). */
6878 || ((default_match
|| (0 == sal
.pc
))
6879 && b
->source_file
!= NULL
6880 && sal
.symtab
!= NULL
6881 && strcmp (b
->source_file
, sal
.symtab
->filename
) == 0
6882 && b
->line_number
== sal
.line
)))
6883 /* Yes, if sal source file and line matches b. */
6885 /* Remove it from breakpoint_chain... */
6886 if (b
== breakpoint_chain
)
6888 /* b is at the head of the list */
6889 breakpoint_chain
= b
->next
;
6893 prev
->next
= b
->next
;
6895 /* And add it to 'found' chain. */
6901 /* Keep b, and keep a pointer to it. */
6906 /* Now go thru the 'found' chain and delete them. */
6910 error (_("No breakpoint at %s."), arg
);
6912 error (_("No breakpoint at this line."));
6916 from_tty
= 1; /* Always report if deleted more than one */
6920 printf_unfiltered (_("Deleted breakpoint "));
6922 printf_unfiltered (_("Deleted breakpoints "));
6924 breakpoints_changed ();
6928 printf_unfiltered ("%d ", found
->number
);
6930 delete_breakpoint (found
);
6934 putchar_unfiltered ('\n');
6937 /* Delete breakpoint in BS if they are `delete' breakpoints and
6938 all breakpoints that are marked for deletion, whether hit or not.
6939 This is called after any breakpoint is hit, or after errors. */
6942 breakpoint_auto_delete (bpstat bs
)
6944 struct breakpoint
*b
, *temp
;
6946 for (; bs
; bs
= bs
->next
)
6947 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== disp_del
6949 delete_breakpoint (bs
->breakpoint_at
);
6951 ALL_BREAKPOINTS_SAFE (b
, temp
)
6953 if (b
->disposition
== disp_del_at_next_stop
)
6954 delete_breakpoint (b
);
6958 /* Delete a breakpoint and clean up all traces of it in the data
6962 delete_breakpoint (struct breakpoint
*bpt
)
6964 struct breakpoint
*b
;
6966 struct bp_location
*loc
;
6968 gdb_assert (bpt
!= NULL
);
6970 /* Has this bp already been deleted? This can happen because multiple
6971 lists can hold pointers to bp's. bpstat lists are especial culprits.
6973 One example of this happening is a watchpoint's scope bp. When the
6974 scope bp triggers, we notice that the watchpoint is out of scope, and
6975 delete it. We also delete its scope bp. But the scope bp is marked
6976 "auto-deleting", and is already on a bpstat. That bpstat is then
6977 checked for auto-deleting bp's, which are deleted.
6979 A real solution to this problem might involve reference counts in bp's,
6980 and/or giving them pointers back to their referencing bpstat's, and
6981 teaching delete_breakpoint to only free a bp's storage when no more
6982 references were extent. A cheaper bandaid was chosen. */
6983 if (bpt
->type
== bp_none
)
6986 if (deprecated_delete_breakpoint_hook
)
6987 deprecated_delete_breakpoint_hook (bpt
);
6988 breakpoint_delete_event (bpt
->number
);
6990 if (bpt
->loc
->inserted
)
6991 remove_breakpoint (bpt
->loc
, mark_inserted
);
6993 free_valchain (bpt
->loc
);
6995 if (breakpoint_chain
== bpt
)
6996 breakpoint_chain
= bpt
->next
;
6998 if (bp_location_chain
== bpt
->loc
)
6999 bp_location_chain
= bpt
->loc
->next
;
7001 /* If we have callback-style exception catchpoints, don't go through
7002 the adjustments to the C++ runtime library etc. if the inferior
7003 isn't actually running. target_enable_exception_callback for a
7004 null target ops vector gives an undesirable error message, so we
7005 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
7006 exceptions are supported in this way, it's OK for now. FIXME */
7007 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
7009 /* Format possible error msg */
7010 char *message
= xstrprintf ("Error in deleting catchpoint %d:\n",
7012 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7013 args_for_catchpoint_enable args
;
7014 args
.kind
= bpt
->type
== bp_catch_catch
?
7015 EX_EVENT_CATCH
: EX_EVENT_THROW
;
7017 catch_errors (cover_target_enable_exception_callback
, &args
,
7018 message
, RETURN_MASK_ALL
);
7019 do_cleanups (cleanups
);
7026 b
->next
= bpt
->next
;
7030 ALL_BP_LOCATIONS (loc
)
7031 if (loc
->next
== bpt
->loc
)
7033 loc
->next
= bpt
->loc
->next
;
7037 check_duplicates (bpt
);
7038 /* If this breakpoint was inserted, and there is another breakpoint
7039 at the same address, we need to insert the other breakpoint. */
7040 if (bpt
->loc
->inserted
7041 && bpt
->type
!= bp_hardware_watchpoint
7042 && bpt
->type
!= bp_read_watchpoint
7043 && bpt
->type
!= bp_access_watchpoint
7044 && bpt
->type
!= bp_catch_fork
7045 && bpt
->type
!= bp_catch_vfork
7046 && bpt
->type
!= bp_catch_exec
)
7049 if (b
->loc
->address
== bpt
->loc
->address
7050 && b
->loc
->section
== bpt
->loc
->section
7051 && !b
->loc
->duplicate
7052 && b
->enable_state
!= bp_disabled
7053 && b
->enable_state
!= bp_shlib_disabled
7055 && b
->enable_state
!= bp_call_disabled
)
7059 /* We should never reach this point if there is a permanent
7060 breakpoint at the same address as the one being deleted.
7061 If there is a permanent breakpoint somewhere, it should
7062 always be the only one inserted. */
7063 if (b
->enable_state
== bp_permanent
)
7064 internal_error (__FILE__
, __LINE__
,
7065 _("another breakpoint was inserted on top of "
7066 "a permanent breakpoint"));
7068 memset (&b
->loc
->target_info
, 0, sizeof (b
->loc
->target_info
));
7069 b
->loc
->target_info
.placed_address
= b
->loc
->address
;
7070 if (b
->type
== bp_hardware_breakpoint
)
7071 val
= target_insert_hw_breakpoint (&b
->loc
->target_info
);
7073 val
= target_insert_breakpoint (&b
->loc
->target_info
);
7075 /* If there was an error in the insert, print a message, then stop execution. */
7078 struct ui_file
*tmp_error_stream
= mem_fileopen ();
7079 make_cleanup_ui_file_delete (tmp_error_stream
);
7082 if (b
->type
== bp_hardware_breakpoint
)
7084 fprintf_unfiltered (tmp_error_stream
,
7085 "Cannot insert hardware breakpoint %d.\n"
7086 "You may have requested too many hardware breakpoints.\n",
7091 fprintf_unfiltered (tmp_error_stream
, "Cannot insert breakpoint %d.\n", b
->number
);
7092 fprintf_filtered (tmp_error_stream
, "Error accessing memory address ");
7093 deprecated_print_address_numeric (b
->loc
->address
, 1, tmp_error_stream
);
7094 fprintf_filtered (tmp_error_stream
, ": %s.\n",
7095 safe_strerror (val
));
7098 fprintf_unfiltered (tmp_error_stream
,"The same program may be running in another process.");
7099 target_terminal_ours_for_output ();
7100 error_stream(tmp_error_stream
);
7103 b
->loc
->inserted
= 1;
7107 free_command_lines (&bpt
->commands
);
7110 if (bpt
->cond_string
!= NULL
)
7111 xfree (bpt
->cond_string
);
7112 if (bpt
->addr_string
!= NULL
)
7113 xfree (bpt
->addr_string
);
7114 if (bpt
->exp
!= NULL
)
7116 if (bpt
->exp_string
!= NULL
)
7117 xfree (bpt
->exp_string
);
7118 if (bpt
->val
!= NULL
)
7119 value_free (bpt
->val
);
7120 if (bpt
->source_file
!= NULL
)
7121 xfree (bpt
->source_file
);
7122 if (bpt
->dll_pathname
!= NULL
)
7123 xfree (bpt
->dll_pathname
);
7124 if (bpt
->triggered_dll_pathname
!= NULL
)
7125 xfree (bpt
->triggered_dll_pathname
);
7126 if (bpt
->exec_pathname
!= NULL
)
7127 xfree (bpt
->exec_pathname
);
7129 /* Be sure no bpstat's are pointing at it after it's been freed. */
7130 /* FIXME, how can we find all bpstat's?
7131 We just check stop_bpstat for now. */
7132 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
7133 if (bs
->breakpoint_at
== bpt
)
7135 bs
->breakpoint_at
= NULL
;
7137 /* bs->commands will be freed later. */
7139 /* On the chance that someone will soon try again to delete this same
7140 bp, we mark it as deleted before freeing its storage. */
7141 bpt
->type
= bp_none
;
7148 do_delete_breakpoint_cleanup (void *b
)
7150 delete_breakpoint (b
);
7154 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
7156 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
7160 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
7162 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
7166 delete_command (char *arg
, int from_tty
)
7168 struct breakpoint
*b
, *temp
;
7174 int breaks_to_delete
= 0;
7176 /* Delete all breakpoints if no argument.
7177 Do not delete internal or call-dummy breakpoints, these
7178 have to be deleted with an explicit breakpoint number argument. */
7181 if (b
->type
!= bp_call_dummy
&&
7182 b
->type
!= bp_shlib_event
&&
7183 b
->type
!= bp_thread_event
&&
7184 b
->type
!= bp_overlay_event
&&
7187 breaks_to_delete
= 1;
7192 /* Ask user only if there are some breakpoints to delete. */
7194 || (breaks_to_delete
&& query (_("Delete all breakpoints? "))))
7196 ALL_BREAKPOINTS_SAFE (b
, temp
)
7198 if (b
->type
!= bp_call_dummy
&&
7199 b
->type
!= bp_shlib_event
&&
7200 b
->type
!= bp_thread_event
&&
7201 b
->type
!= bp_overlay_event
&&
7203 delete_breakpoint (b
);
7208 map_breakpoint_numbers (arg
, delete_breakpoint
);
7211 /* Reset a breakpoint given it's struct breakpoint * BINT.
7212 The value we return ends up being the return value from catch_errors.
7213 Unused in this case. */
7216 breakpoint_re_set_one (void *bint
)
7218 /* get past catch_errs */
7219 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7223 int *not_found_ptr
= NULL
;
7224 struct symtabs_and_lines sals
;
7226 enum enable_state save_enable
;
7231 warning (_("attempted to reset apparently deleted breakpoint #%d?"),
7235 case bp_hardware_breakpoint
:
7237 case bp_catch_unload
:
7238 if (b
->addr_string
== NULL
)
7240 /* Anything without a string can't be re-set. */
7241 delete_breakpoint (b
);
7244 /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote:
7246 ``And a hack it is, although Apple's Darwin version of GDB
7247 contains an almost identical hack to implement a "future
7248 break" command. It seems to work in many real world cases,
7249 but it is easy to come up with a test case where the patch
7250 doesn't help at all.''
7252 ``It seems that the way GDB implements breakpoints - in -
7253 shared - libraries was designed for a.out shared library
7254 systems (SunOS 4) where shared libraries were loaded at a
7255 fixed address in memory. Since ELF shared libraries can (and
7256 will) be loaded at any address in memory, things break.
7257 Fixing this is not trivial. Therefore, I'm not sure whether
7258 we should add this hack to the branch only. I cannot
7259 guarantee that things will be fixed on the trunk in the near
7262 In case we have a problem, disable this breakpoint. We'll
7263 restore its status if we succeed. Don't disable a
7264 shlib_disabled breakpoint though. There's a fair chance we
7265 can't re-set it if the shared library it's in hasn't been
7271 save_enable
= b
->enable_state
;
7272 if (b
->enable_state
!= bp_shlib_disabled
)
7273 b
->enable_state
= bp_disabled
;
7275 /* If resetting a shlib-disabled breakpoint, we don't want to
7276 see an error message if it is not found since we will expect
7277 this to occur until the shared library is finally reloaded.
7278 We accomplish this by giving decode_line_1 a pointer to use
7279 for silent notification that the symbol is not found. */
7280 not_found_ptr
= ¬_found
;
7282 set_language (b
->language
);
7283 input_radix
= b
->input_radix
;
7285 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
,
7287 for (i
= 0; i
< sals
.nelts
; i
++)
7289 resolve_sal_pc (&sals
.sals
[i
]);
7291 /* Reparse conditions, they might contain references to the
7293 if (b
->cond_string
!= NULL
)
7299 /* Avoid re-freeing b->exp if an error during the call
7303 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
7306 /* We need to re-set the breakpoint if the address changes... */
7307 if (b
->loc
->address
!= sals
.sals
[i
].pc
7308 /* ...or new and old breakpoints both have source files, and
7309 the source file name or the line number changes... */
7310 || (b
->source_file
!= NULL
7311 && sals
.sals
[i
].symtab
!= NULL
7312 && (strcmp (b
->source_file
, sals
.sals
[i
].symtab
->filename
) != 0
7313 || b
->line_number
!= sals
.sals
[i
].line
)
7315 /* ...or we switch between having a source file and not having
7317 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
7320 if (b
->source_file
!= NULL
)
7321 xfree (b
->source_file
);
7322 if (sals
.sals
[i
].symtab
== NULL
)
7323 b
->source_file
= NULL
;
7326 savestring (sals
.sals
[i
].symtab
->filename
,
7327 strlen (sals
.sals
[i
].symtab
->filename
));
7328 b
->line_number
= sals
.sals
[i
].line
;
7329 b
->loc
->requested_address
= sals
.sals
[i
].pc
;
7331 = adjust_breakpoint_address (b
->loc
->requested_address
,
7334 /* Used to check for duplicates here, but that can
7335 cause trouble, as it doesn't check for disabled
7340 /* Might be better to do this just once per breakpoint_re_set,
7341 rather than once for every breakpoint. */
7342 breakpoints_changed ();
7344 b
->loc
->section
= sals
.sals
[i
].section
;
7345 b
->enable_state
= save_enable
; /* Restore it, this worked. */
7348 /* Now that this is re-enabled, check_duplicates
7350 check_duplicates (b
);
7357 case bp_hardware_watchpoint
:
7358 case bp_read_watchpoint
:
7359 case bp_access_watchpoint
:
7360 innermost_block
= NULL
;
7361 /* The issue arises of what context to evaluate this in. The
7362 same one as when it was set, but what does that mean when
7363 symbols have been re-read? We could save the filename and
7364 functionname, but if the context is more local than that, the
7365 best we could do would be something like how many levels deep
7366 and which index at that particular level, but that's going to
7367 be less stable than filenames or function names. */
7369 /* So for now, just use a global context. */
7373 /* Avoid re-freeing b->exp if an error during the call to
7374 parse_expression. */
7377 b
->exp
= parse_expression (b
->exp_string
);
7378 b
->exp_valid_block
= innermost_block
;
7379 mark
= value_mark ();
7382 value_free (b
->val
);
7383 /* Avoid re-freeing b->val if an error during the call to
7384 evaluate_expression. */
7387 b
->val
= evaluate_expression (b
->exp
);
7388 release_value (b
->val
);
7389 if (value_lazy (b
->val
) && breakpoint_enabled (b
))
7390 value_fetch_lazy (b
->val
);
7392 if (b
->cond_string
!= NULL
)
7398 /* Avoid re-freeing b->exp if an error during the call
7402 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7404 if (breakpoint_enabled (b
))
7406 value_free_to_mark (mark
);
7408 case bp_catch_catch
:
7409 case bp_catch_throw
:
7411 /* We needn't really do anything to reset these, since the mask
7412 that requests them is unaffected by e.g., new libraries being
7415 case bp_catch_vfork
:
7420 printf_filtered (_("Deleting unknown breakpoint type %d\n"), b
->type
);
7422 /* Delete longjmp and overlay event breakpoints; they will be
7423 reset later by breakpoint_re_set. */
7425 case bp_longjmp_resume
:
7426 case bp_overlay_event
:
7427 delete_breakpoint (b
);
7430 /* This breakpoint is special, it's set up when the inferior
7431 starts and we really don't want to touch it. */
7432 case bp_shlib_event
:
7434 /* Like bp_shlib_event, this breakpoint type is special.
7435 Once it is set up, we do not want to touch it. */
7436 case bp_thread_event
:
7438 /* Keep temporary breakpoints, which can be encountered when we step
7439 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7440 Otherwise these should have been blown away via the cleanup chain
7441 or by breakpoint_init_inferior when we rerun the executable. */
7444 case bp_watchpoint_scope
:
7446 case bp_step_resume
:
7453 /* Re-set all breakpoints after symbols have been re-loaded. */
7455 breakpoint_re_set (void)
7457 struct breakpoint
*b
, *temp
;
7458 enum language save_language
;
7459 int save_input_radix
;
7461 save_language
= current_language
->la_language
;
7462 save_input_radix
= input_radix
;
7463 ALL_BREAKPOINTS_SAFE (b
, temp
)
7465 /* Format possible error msg */
7466 char *message
= xstrprintf ("Error in re-setting breakpoint %d:\n",
7468 struct cleanup
*cleanups
= make_cleanup (xfree
, message
);
7469 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7470 do_cleanups (cleanups
);
7472 set_language (save_language
);
7473 input_radix
= save_input_radix
;
7475 if (GET_LONGJMP_TARGET_P ())
7477 create_longjmp_breakpoint ("longjmp");
7478 create_longjmp_breakpoint ("_longjmp");
7479 create_longjmp_breakpoint ("siglongjmp");
7480 create_longjmp_breakpoint ("_siglongjmp");
7481 create_longjmp_breakpoint (NULL
);
7484 create_overlay_event_breakpoint ("_ovly_debug_event");
7487 /* Reset the thread number of this breakpoint:
7489 - If the breakpoint is for all threads, leave it as-is.
7490 - Else, reset it to the current thread for inferior_ptid. */
7492 breakpoint_re_set_thread (struct breakpoint
*b
)
7494 if (b
->thread
!= -1)
7496 if (in_thread_list (inferior_ptid
))
7497 b
->thread
= pid_to_thread_id (inferior_ptid
);
7501 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7502 If from_tty is nonzero, it prints a message to that effect,
7503 which ends with a period (no newline). */
7506 set_ignore_count (int bptnum
, int count
, int from_tty
)
7508 struct breakpoint
*b
;
7514 if (b
->number
== bptnum
)
7516 b
->ignore_count
= count
;
7520 printf_filtered (_("Will stop next time breakpoint %d is reached."),
7522 else if (count
== 1)
7523 printf_filtered (_("Will ignore next crossing of breakpoint %d."),
7526 printf_filtered (_("Will ignore next %d crossings of breakpoint %d."),
7529 breakpoints_changed ();
7530 breakpoint_modify_event (b
->number
);
7534 error (_("No breakpoint number %d."), bptnum
);
7537 /* Clear the ignore counts of all breakpoints. */
7539 breakpoint_clear_ignore_counts (void)
7541 struct breakpoint
*b
;
7544 b
->ignore_count
= 0;
7547 /* Command to set ignore-count of breakpoint N to COUNT. */
7550 ignore_command (char *args
, int from_tty
)
7556 error_no_arg (_("a breakpoint number"));
7558 num
= get_number (&p
);
7560 error (_("bad breakpoint number: '%s'"), args
);
7562 error (_("Second argument (specified ignore-count) is missing."));
7564 set_ignore_count (num
,
7565 longest_to_int (value_as_long (parse_and_eval (p
))),
7568 printf_filtered ("\n");
7571 /* Call FUNCTION on each of the breakpoints
7572 whose numbers are given in ARGS. */
7575 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7580 struct breakpoint
*b
, *tmp
;
7584 error_no_arg (_("one or more breakpoint numbers"));
7591 num
= get_number_or_range (&p1
);
7594 warning (_("bad breakpoint number at or near '%s'"), p
);
7598 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7599 if (b
->number
== num
)
7601 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7604 if (related_breakpoint
)
7605 function (related_breakpoint
);
7609 printf_unfiltered (_("No breakpoint number %d.\n"), num
);
7615 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7616 If from_tty is nonzero, it prints a message to that effect,
7617 which ends with a period (no newline). */
7620 disable_breakpoint (struct breakpoint
*bpt
)
7622 /* Never disable a watchpoint scope breakpoint; we want to
7623 hit them when we leave scope so we can delete both the
7624 watchpoint and its scope breakpoint at that time. */
7625 if (bpt
->type
== bp_watchpoint_scope
)
7628 /* You can't disable permanent breakpoints. */
7629 if (bpt
->enable_state
== bp_permanent
)
7632 bpt
->enable_state
= bp_disabled
;
7634 check_duplicates (bpt
);
7636 if (deprecated_modify_breakpoint_hook
)
7637 deprecated_modify_breakpoint_hook (bpt
);
7638 breakpoint_modify_event (bpt
->number
);
7642 disable_command (char *args
, int from_tty
)
7644 struct breakpoint
*bpt
;
7646 ALL_BREAKPOINTS (bpt
)
7650 warning (_("attempted to disable apparently deleted breakpoint #%d?"),
7655 case bp_catch_unload
:
7657 case bp_catch_vfork
:
7659 case bp_catch_catch
:
7660 case bp_catch_throw
:
7661 case bp_hardware_breakpoint
:
7663 case bp_hardware_watchpoint
:
7664 case bp_read_watchpoint
:
7665 case bp_access_watchpoint
:
7666 disable_breakpoint (bpt
);
7671 map_breakpoint_numbers (args
, disable_breakpoint
);
7675 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7677 int target_resources_ok
, other_type_used
;
7680 if (bpt
->type
== bp_hardware_breakpoint
)
7683 i
= hw_breakpoint_used_count ();
7684 target_resources_ok
=
7685 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7687 if (target_resources_ok
== 0)
7688 error (_("No hardware breakpoint support in the target."));
7689 else if (target_resources_ok
< 0)
7690 error (_("Hardware breakpoints used exceeds limit."));
7695 if (bpt
->enable_state
!= bp_enabled
)
7697 /* When enabling a pending breakpoint, we need to check if the breakpoint
7698 is resolvable since shared libraries could have been loaded
7699 after the breakpoint was disabled. */
7700 breakpoints_changed ();
7701 if (resolve_pending_breakpoint (bpt
) == GDB_RC_OK
)
7703 delete_breakpoint (bpt
);
7706 bpt
->enable_state
= bp_enabled
;
7707 bpt
->disposition
= disposition
;
7710 else /* Not a pending breakpoint. */
7712 if (bpt
->enable_state
!= bp_permanent
)
7713 bpt
->enable_state
= bp_enabled
;
7714 bpt
->disposition
= disposition
;
7715 check_duplicates (bpt
);
7716 breakpoints_changed ();
7718 if (bpt
->type
== bp_watchpoint
||
7719 bpt
->type
== bp_hardware_watchpoint
||
7720 bpt
->type
== bp_read_watchpoint
||
7721 bpt
->type
== bp_access_watchpoint
)
7723 struct frame_id saved_frame_id
;
7725 saved_frame_id
= get_frame_id (get_selected_frame (NULL
));
7726 if (bpt
->exp_valid_block
!= NULL
)
7728 struct frame_info
*fr
=
7729 fr
= frame_find_by_id (bpt
->watchpoint_frame
);
7732 printf_filtered (_("\
7733 Cannot enable watchpoint %d because the block in which its expression\n\
7734 is valid is not currently in scope.\n"), bpt
->number
);
7735 bpt
->enable_state
= bp_disabled
;
7741 value_free (bpt
->val
);
7742 mark
= value_mark ();
7743 bpt
->val
= evaluate_expression (bpt
->exp
);
7744 release_value (bpt
->val
);
7745 if (value_lazy (bpt
->val
))
7746 value_fetch_lazy (bpt
->val
);
7748 if (bpt
->type
== bp_hardware_watchpoint
||
7749 bpt
->type
== bp_read_watchpoint
||
7750 bpt
->type
== bp_access_watchpoint
)
7752 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7753 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7755 /* Hack around 'unused var' error for some targets here */
7756 (void) mem_cnt
, (void) i
;
7757 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7758 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7759 /* we can consider of type is bp_hardware_watchpoint, convert to
7760 bp_watchpoint in the following condition */
7761 if (target_resources_ok
< 0)
7763 printf_filtered (_("\
7764 Cannot enable watchpoint %d because target watch resources\n\
7765 have been allocated for other watchpoints.\n"), bpt
->number
);
7766 bpt
->enable_state
= bp_disabled
;
7767 value_free_to_mark (mark
);
7772 select_frame (frame_find_by_id (saved_frame_id
));
7773 value_free_to_mark (mark
);
7777 if (deprecated_modify_breakpoint_hook
)
7778 deprecated_modify_breakpoint_hook (bpt
);
7779 breakpoint_modify_event (bpt
->number
);
7783 enable_breakpoint (struct breakpoint
*bpt
)
7785 do_enable_breakpoint (bpt
, bpt
->disposition
);
7788 /* The enable command enables the specified breakpoints (or all defined
7789 breakpoints) so they once again become (or continue to be) effective
7790 in stopping the inferior. */
7793 enable_command (char *args
, int from_tty
)
7795 struct breakpoint
*bpt
;
7797 ALL_BREAKPOINTS (bpt
)
7801 warning (_("attempted to enable apparently deleted breakpoint #%d?"),
7806 case bp_catch_unload
:
7808 case bp_catch_vfork
:
7810 case bp_catch_catch
:
7811 case bp_catch_throw
:
7812 case bp_hardware_breakpoint
:
7814 case bp_hardware_watchpoint
:
7815 case bp_read_watchpoint
:
7816 case bp_access_watchpoint
:
7817 enable_breakpoint (bpt
);
7822 map_breakpoint_numbers (args
, enable_breakpoint
);
7826 enable_once_breakpoint (struct breakpoint
*bpt
)
7828 do_enable_breakpoint (bpt
, disp_disable
);
7832 enable_once_command (char *args
, int from_tty
)
7834 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7838 enable_delete_breakpoint (struct breakpoint
*bpt
)
7840 do_enable_breakpoint (bpt
, disp_del
);
7844 enable_delete_command (char *args
, int from_tty
)
7846 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7850 set_breakpoint_cmd (char *args
, int from_tty
)
7855 show_breakpoint_cmd (char *args
, int from_tty
)
7859 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7861 struct symtabs_and_lines
7862 decode_line_spec_1 (char *string
, int funfirstline
)
7864 struct symtabs_and_lines sals
;
7866 error (_("Empty line specification."));
7867 if (default_breakpoint_valid
)
7868 sals
= decode_line_1 (&string
, funfirstline
,
7869 default_breakpoint_symtab
,
7870 default_breakpoint_line
,
7871 (char ***) NULL
, NULL
);
7873 sals
= decode_line_1 (&string
, funfirstline
,
7874 (struct symtab
*) NULL
, 0, (char ***) NULL
, NULL
);
7876 error (_("Junk at end of line specification: %s"), string
);
7880 /* Create and insert a raw software breakpoint at PC. Return an
7881 identifier, which should be used to remove the breakpoint later.
7882 In general, places which call this should be using something on the
7883 breakpoint chain instead; this function should be eliminated
7887 deprecated_insert_raw_breakpoint (CORE_ADDR pc
)
7889 struct bp_target_info
*bp_tgt
;
7891 bp_tgt
= xmalloc (sizeof (struct bp_target_info
));
7892 memset (bp_tgt
, 0, sizeof (struct bp_target_info
));
7894 bp_tgt
->placed_address
= pc
;
7895 if (target_insert_breakpoint (bp_tgt
) != 0)
7897 /* Could not insert the breakpoint. */
7905 /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
7908 deprecated_remove_raw_breakpoint (void *bp
)
7910 struct bp_target_info
*bp_tgt
= bp
;
7913 ret
= target_remove_breakpoint (bp_tgt
);
7919 /* One (or perhaps two) breakpoints used for software single stepping. */
7921 static void *single_step_breakpoints
[2];
7923 /* Create and insert a breakpoint for software single step. */
7926 insert_single_step_breakpoint (CORE_ADDR next_pc
)
7930 if (single_step_breakpoints
[0] == NULL
)
7931 bpt_p
= &single_step_breakpoints
[0];
7934 gdb_assert (single_step_breakpoints
[1] == NULL
);
7935 bpt_p
= &single_step_breakpoints
[1];
7938 /* NOTE drow/2006-04-11: A future improvement to this function would be
7939 to only create the breakpoints once, and actually put them on the
7940 breakpoint chain. That would let us use set_raw_breakpoint. We could
7941 adjust the addresses each time they were needed. Doing this requires
7942 corresponding changes elsewhere where single step breakpoints are
7943 handled, however. So, for now, we use this. */
7945 *bpt_p
= deprecated_insert_raw_breakpoint (next_pc
);
7947 error (_("Could not insert single-step breakpoint at 0x%s"),
7948 paddr_nz (next_pc
));
7951 /* Remove and delete any breakpoints used for software single step. */
7954 remove_single_step_breakpoints (void)
7956 gdb_assert (single_step_breakpoints
[0] != NULL
);
7958 /* See insert_single_step_breakpoint for more about this deprecated
7960 deprecated_remove_raw_breakpoint (single_step_breakpoints
[0]);
7961 single_step_breakpoints
[0] = NULL
;
7963 if (single_step_breakpoints
[1] != NULL
)
7965 deprecated_remove_raw_breakpoint (single_step_breakpoints
[1]);
7966 single_step_breakpoints
[1] = NULL
;
7970 /* Check whether a software single-step breakpoint is inserted at PC. */
7973 single_step_breakpoint_inserted_here_p (CORE_ADDR pc
)
7977 for (i
= 0; i
< 2; i
++)
7979 struct bp_target_info
*bp_tgt
= single_step_breakpoints
[i
];
7980 if (bp_tgt
&& bp_tgt
->placed_address
== pc
)
7988 /* This help string is used for the break, hbreak, tbreak and thbreak commands.
7989 It is defined as a macro to prevent duplication.
7990 COMMAND should be a string constant containing the name of the command. */
7991 #define BREAK_ARGS_HELP(command) \
7992 command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\
7993 LOCATION may be a line number, function name, or \"*\" and an address.\n\
7994 If a line number is specified, break at start of code for that line.\n\
7995 If a function is specified, break at start of code for that function.\n\
7996 If an address is specified, break at that exact address.\n\
7997 With no LOCATION, uses current execution address of selected stack frame.\n\
7998 This is useful for breaking on return to a stack frame.\n\
8000 THREADNUM is the number from \"info threads\".\n\
8001 CONDITION is a boolean expression.\n\
8003 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
8005 Do \"help breakpoints\" for info on other commands dealing with breakpoints."
8008 _initialize_breakpoint (void)
8010 static struct cmd_list_element
*breakpoint_set_cmdlist
;
8011 static struct cmd_list_element
*breakpoint_show_cmdlist
;
8012 struct cmd_list_element
*c
;
8014 observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib
);
8016 breakpoint_chain
= 0;
8017 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
8018 before a breakpoint is set. */
8019 breakpoint_count
= 0;
8021 add_com ("ignore", class_breakpoint
, ignore_command
, _("\
8022 Set ignore-count of breakpoint number N to COUNT.\n\
8023 Usage is `ignore N COUNT'."));
8025 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
8027 add_com ("commands", class_breakpoint
, commands_command
, _("\
8028 Set commands to be executed when a breakpoint is hit.\n\
8029 Give breakpoint number as argument after \"commands\".\n\
8030 With no argument, the targeted breakpoint is the last one set.\n\
8031 The commands themselves follow starting on the next line.\n\
8032 Type a line containing \"end\" to indicate the end of them.\n\
8033 Give \"silent\" as the first line to make the breakpoint silent;\n\
8034 then no output is printed when it is hit, except what the commands print."));
8036 add_com ("condition", class_breakpoint
, condition_command
, _("\
8037 Specify breakpoint number N to break only if COND is true.\n\
8038 Usage is `condition N COND', where N is an integer and COND is an\n\
8039 expression to be evaluated whenever breakpoint N is reached."));
8041 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
, _("\
8042 Set a temporary breakpoint.\n\
8043 Like \"break\" except the breakpoint is only temporary,\n\
8044 so it will be deleted when hit. Equivalent to \"break\" followed\n\
8045 by using \"enable delete\" on the breakpoint number.\n\
8047 BREAK_ARGS_HELP ("tbreak")));
8048 set_cmd_completer (c
, location_completer
);
8050 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
, _("\
8051 Set a hardware assisted breakpoint.\n\
8052 Like \"break\" except the breakpoint requires hardware support,\n\
8053 some target hardware may not have this support.\n\
8055 BREAK_ARGS_HELP ("hbreak")));
8056 set_cmd_completer (c
, location_completer
);
8058 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
, _("\
8059 Set a temporary hardware assisted breakpoint.\n\
8060 Like \"hbreak\" except the breakpoint is only temporary,\n\
8061 so it will be deleted when hit.\n\
8063 BREAK_ARGS_HELP ("thbreak")));
8064 set_cmd_completer (c
, location_completer
);
8066 add_prefix_cmd ("enable", class_breakpoint
, enable_command
, _("\
8067 Enable some breakpoints.\n\
8068 Give breakpoint numbers (separated by spaces) as arguments.\n\
8069 With no subcommand, breakpoints are enabled until you command otherwise.\n\
8070 This is used to cancel the effect of the \"disable\" command.\n\
8071 With a subcommand you can enable temporarily."),
8072 &enablelist
, "enable ", 1, &cmdlist
);
8074 add_com ("ab", class_breakpoint
, enable_command
, _("\
8075 Enable some breakpoints.\n\
8076 Give breakpoint numbers (separated by spaces) as arguments.\n\
8077 With no subcommand, breakpoints are enabled until you command otherwise.\n\
8078 This is used to cancel the effect of the \"disable\" command.\n\
8079 With a subcommand you can enable temporarily."));
8081 add_com_alias ("en", "enable", class_breakpoint
, 1);
8083 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
, _("\
8084 Enable some breakpoints.\n\
8085 Give breakpoint numbers (separated by spaces) as arguments.\n\
8086 This is used to cancel the effect of the \"disable\" command.\n\
8087 May be abbreviated to simply \"enable\".\n"),
8088 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
8090 add_cmd ("once", no_class
, enable_once_command
, _("\
8091 Enable breakpoints for one hit. Give breakpoint numbers.\n\
8092 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
8095 add_cmd ("delete", no_class
, enable_delete_command
, _("\
8096 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
8097 If a breakpoint is hit while enabled in this fashion, it is deleted."),
8100 add_cmd ("delete", no_class
, enable_delete_command
, _("\
8101 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
8102 If a breakpoint is hit while enabled in this fashion, it is deleted."),
8105 add_cmd ("once", no_class
, enable_once_command
, _("\
8106 Enable breakpoints for one hit. Give breakpoint numbers.\n\
8107 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
8110 add_prefix_cmd ("disable", class_breakpoint
, disable_command
, _("\
8111 Disable some breakpoints.\n\
8112 Arguments are breakpoint numbers with spaces in between.\n\
8113 To disable all breakpoints, give no argument.\n\
8114 A disabled breakpoint is not forgotten, but has no effect until reenabled."),
8115 &disablelist
, "disable ", 1, &cmdlist
);
8116 add_com_alias ("dis", "disable", class_breakpoint
, 1);
8117 add_com_alias ("disa", "disable", class_breakpoint
, 1);
8119 add_com ("sb", class_breakpoint
, disable_command
, _("\
8120 Disable some breakpoints.\n\
8121 Arguments are breakpoint numbers with spaces in between.\n\
8122 To disable all breakpoints, give no argument.\n\
8123 A disabled breakpoint is not forgotten, but has no effect until reenabled."));
8125 add_cmd ("breakpoints", class_alias
, disable_command
, _("\
8126 Disable some breakpoints.\n\
8127 Arguments are breakpoint numbers with spaces in between.\n\
8128 To disable all breakpoints, give no argument.\n\
8129 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
8130 This command may be abbreviated \"disable\"."),
8133 add_prefix_cmd ("delete", class_breakpoint
, delete_command
, _("\
8134 Delete some breakpoints or auto-display expressions.\n\
8135 Arguments are breakpoint numbers with spaces in between.\n\
8136 To delete all breakpoints, give no argument.\n\
8138 Also a prefix command for deletion of other GDB objects.\n\
8139 The \"unset\" command is also an alias for \"delete\"."),
8140 &deletelist
, "delete ", 1, &cmdlist
);
8141 add_com_alias ("d", "delete", class_breakpoint
, 1);
8142 add_com_alias ("del", "delete", class_breakpoint
, 1);
8144 add_com ("db", class_breakpoint
, delete_command
, _("\
8145 Delete some breakpoints.\n\
8146 Arguments are breakpoint numbers with spaces in between.\n\
8147 To delete all breakpoints, give no argument.\n"));
8149 add_cmd ("breakpoints", class_alias
, delete_command
, _("\
8150 Delete some breakpoints or auto-display expressions.\n\
8151 Arguments are breakpoint numbers with spaces in between.\n\
8152 To delete all breakpoints, give no argument.\n\
8153 This command may be abbreviated \"delete\"."),
8156 add_com ("clear", class_breakpoint
, clear_command
, _("\
8157 Clear breakpoint at specified line or function.\n\
8158 Argument may be line number, function name, or \"*\" and an address.\n\
8159 If line number is specified, all breakpoints in that line are cleared.\n\
8160 If function is specified, breakpoints at beginning of function are cleared.\n\
8161 If an address is specified, breakpoints at that address are cleared.\n\
8163 With no argument, clears all breakpoints in the line that the selected frame\n\
8166 See also the \"delete\" command which clears breakpoints by number."));
8168 c
= add_com ("break", class_breakpoint
, break_command
, _("\
8169 Set breakpoint at specified line or function.\n"
8170 BREAK_ARGS_HELP ("break")));
8171 set_cmd_completer (c
, location_completer
);
8173 add_com_alias ("b", "break", class_run
, 1);
8174 add_com_alias ("br", "break", class_run
, 1);
8175 add_com_alias ("bre", "break", class_run
, 1);
8176 add_com_alias ("brea", "break", class_run
, 1);
8180 add_com_alias ("ba", "break", class_breakpoint
, 1);
8181 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
8186 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
, _("\
8187 Break in function/address or break at a line in the current file."),
8188 &stoplist
, "stop ", 1, &cmdlist
);
8189 add_cmd ("in", class_breakpoint
, stopin_command
,
8190 _("Break in function or address."), &stoplist
);
8191 add_cmd ("at", class_breakpoint
, stopat_command
,
8192 _("Break at a line in the current file."), &stoplist
);
8193 add_com ("status", class_info
, breakpoints_info
, _("\
8194 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8195 The \"Type\" column indicates one of:\n\
8196 \tbreakpoint - normal breakpoint\n\
8197 \twatchpoint - watchpoint\n\
8198 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8199 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8200 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8201 address and file/line number respectively.\n\
8203 Convenience variable \"$_\" and default examine address for \"x\"\n\
8204 are set to the address of the last breakpoint listed.\n\n\
8205 Convenience variable \"$bpnum\" contains the number of the last\n\
8209 add_info ("breakpoints", breakpoints_info
, _("\
8210 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8211 The \"Type\" column indicates one of:\n\
8212 \tbreakpoint - normal breakpoint\n\
8213 \twatchpoint - watchpoint\n\
8214 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8215 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8216 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8217 address and file/line number respectively.\n\
8219 Convenience variable \"$_\" and default examine address for \"x\"\n\
8220 are set to the address of the last breakpoint listed.\n\n\
8221 Convenience variable \"$bpnum\" contains the number of the last\n\
8225 add_com ("lb", class_breakpoint
, breakpoints_info
, _("\
8226 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
8227 The \"Type\" column indicates one of:\n\
8228 \tbreakpoint - normal breakpoint\n\
8229 \twatchpoint - watchpoint\n\
8230 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8231 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8232 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8233 address and file/line number respectively.\n\
8235 Convenience variable \"$_\" and default examine address for \"x\"\n\
8236 are set to the address of the last breakpoint listed.\n\n\
8237 Convenience variable \"$bpnum\" contains the number of the last\n\
8240 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
, _("\
8241 Status of all breakpoints, or breakpoint number NUMBER.\n\
8242 The \"Type\" column indicates one of:\n\
8243 \tbreakpoint - normal breakpoint\n\
8244 \twatchpoint - watchpoint\n\
8245 \tlongjmp - internal breakpoint used to step through longjmp()\n\
8246 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
8247 \tuntil - internal breakpoint used by the \"until\" command\n\
8248 \tfinish - internal breakpoint used by the \"finish\" command\n\
8249 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
8250 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
8251 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
8252 address and file/line number respectively.\n\
8254 Convenience variable \"$_\" and default examine address for \"x\"\n\
8255 are set to the address of the last breakpoint listed.\n\
8257 Convenience variable \"$bpnum\" contains the number of the last\n\
8259 &maintenanceinfolist
);
8261 add_com ("catch", class_breakpoint
, catch_command
, _("\
8262 Set catchpoints to catch events.\n\
8263 Raised signals may be caught:\n\
8264 \tcatch signal - all signals\n\
8265 \tcatch signal <signame> - a particular signal\n\
8266 Raised exceptions may be caught:\n\
8267 \tcatch throw - all exceptions, when thrown\n\
8268 \tcatch throw <exceptname> - a particular exception, when thrown\n\
8269 \tcatch catch - all exceptions, when caught\n\
8270 \tcatch catch <exceptname> - a particular exception, when caught\n\
8271 Thread or process events may be caught:\n\
8272 \tcatch thread_start - any threads, just after creation\n\
8273 \tcatch thread_exit - any threads, just before expiration\n\
8274 \tcatch thread_join - any threads, just after joins\n\
8275 Process events may be caught:\n\
8276 \tcatch start - any processes, just after creation\n\
8277 \tcatch exit - any processes, just before expiration\n\
8278 \tcatch fork - calls to fork()\n\
8279 \tcatch vfork - calls to vfork()\n\
8280 \tcatch exec - calls to exec()\n\
8281 Dynamically-linked library events may be caught:\n\
8282 \tcatch load - loads of any library\n\
8283 \tcatch load <libname> - loads of a particular library\n\
8284 \tcatch unload - unloads of any library\n\
8285 \tcatch unload <libname> - unloads of a particular library\n\
8286 The act of your program's execution stopping may also be caught:\n\
8288 C++ exceptions may be caught:\n\
8289 \tcatch throw - all exceptions, when thrown\n\
8290 \tcatch catch - all exceptions, when caught\n\
8291 Ada exceptions may be caught:\n\
8292 \tcatch exception - all exceptions, when raised\n\
8293 \tcatch exception <name> - a particular exception, when raised\n\
8294 \tcatch exception unhandled - all unhandled exceptions, when raised\n\
8295 \tcatch assert - all failed assertions, when raised\n\
8297 Do \"help set follow-fork-mode\" for info on debugging your program\n\
8298 after a fork or vfork is caught.\n\n\
8299 Do \"help breakpoints\" for info on other commands dealing with breakpoints."));
8301 add_com ("tcatch", class_breakpoint
, tcatch_command
, _("\
8302 Set temporary catchpoints to catch events.\n\
8303 Args like \"catch\" command.\n\
8304 Like \"catch\" except the catchpoint is only temporary,\n\
8305 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
8306 by using \"enable delete\" on the catchpoint number."));
8308 c
= add_com ("watch", class_breakpoint
, watch_command
, _("\
8309 Set a watchpoint for an expression.\n\
8310 A watchpoint stops execution of your program whenever the value of\n\
8311 an expression changes."));
8312 set_cmd_completer (c
, location_completer
);
8314 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
, _("\
8315 Set a read watchpoint for an expression.\n\
8316 A watchpoint stops execution of your program whenever the value of\n\
8317 an expression is read."));
8318 set_cmd_completer (c
, location_completer
);
8320 c
= add_com ("awatch", class_breakpoint
, awatch_command
, _("\
8321 Set a watchpoint for an expression.\n\
8322 A watchpoint stops execution of your program whenever the value of\n\
8323 an expression is either read or written."));
8324 set_cmd_completer (c
, location_completer
);
8326 add_info ("watchpoints", breakpoints_info
,
8327 _("Synonym for ``info breakpoints''."));
8330 /* XXX: cagney/2005-02-23: This should be a boolean, and should
8331 respond to changes - contrary to the description. */
8332 add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support
,
8333 &can_use_hw_watchpoints
, _("\
8334 Set debugger's willingness to use watchpoint hardware."), _("\
8335 Show debugger's willingness to use watchpoint hardware."), _("\
8336 If zero, gdb will not use hardware for new watchpoints, even if\n\
8337 such is available. (However, any hardware watchpoints that were\n\
8338 created before setting this to nonzero, will continue to use watchpoint\n\
8341 show_can_use_hw_watchpoints
,
8342 &setlist
, &showlist
);
8344 can_use_hw_watchpoints
= 1;
8346 add_prefix_cmd ("breakpoint", class_maintenance
, set_breakpoint_cmd
, _("\
8347 Breakpoint specific settings\n\
8348 Configure various breakpoint-specific variables such as\n\
8349 pending breakpoint behavior"),
8350 &breakpoint_set_cmdlist
, "set breakpoint ",
8351 0/*allow-unknown*/, &setlist
);
8352 add_prefix_cmd ("breakpoint", class_maintenance
, show_breakpoint_cmd
, _("\
8353 Breakpoint specific settings\n\
8354 Configure various breakpoint-specific variables such as\n\
8355 pending breakpoint behavior"),
8356 &breakpoint_show_cmdlist
, "show breakpoint ",
8357 0/*allow-unknown*/, &showlist
);
8359 add_setshow_auto_boolean_cmd ("pending", no_class
,
8360 &pending_break_support
, _("\
8361 Set debugger's behavior regarding pending breakpoints."), _("\
8362 Show debugger's behavior regarding pending breakpoints."), _("\
8363 If on, an unrecognized breakpoint location will cause gdb to create a\n\
8364 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
8365 an error. If auto, an unrecognized breakpoint location results in a\n\
8366 user-query to see if a pending breakpoint should be created."),
8368 show_pending_break_support
,
8369 &breakpoint_set_cmdlist
,
8370 &breakpoint_show_cmdlist
);
8372 pending_break_support
= AUTO_BOOLEAN_AUTO
;
8374 add_setshow_boolean_cmd ("auto-hw", no_class
,
8375 &automatic_hardware_breakpoints
, _("\
8376 Set automatic usage of hardware breakpoints."), _("\
8377 Show automatic usage of hardware breakpoints."), _("\
8378 If set, the debugger will automatically use hardware breakpoints for\n\
8379 breakpoints set with \"break\" but falling in read-only memory. If not set,\n\
8380 a warning will be emitted for such breakpoints."),
8382 show_automatic_hardware_breakpoints
,
8383 &breakpoint_set_cmdlist
,
8384 &breakpoint_show_cmdlist
);
8386 automatic_hardware_breakpoints
= 1;