1 /* Everything about breakpoints, for GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include "breakpoint.h"
28 #include "expression.h"
34 #include "gdbthread.h"
37 #include "gdb_string.h"
47 #include "gdb-events.h"
49 /* Prototypes for local functions. */
51 static void until_break_command_continuation (struct continuation_arg
*arg
);
53 static void catch_command_1 (char *, int, int);
55 static void enable_delete_command (char *, int);
57 static void enable_delete_breakpoint (struct breakpoint
*);
59 static void enable_once_command (char *, int);
61 static void enable_once_breakpoint (struct breakpoint
*);
63 static void disable_command (char *, int);
65 static void enable_command (char *, int);
67 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
69 static void ignore_command (char *, int);
71 static int breakpoint_re_set_one (PTR
);
73 static void clear_command (char *, int);
75 static void catch_command (char *, int);
77 static void handle_gnu_4_16_catch_command (char *, int, int);
79 static struct symtabs_and_lines
get_catch_sals (int);
81 static void watch_command (char *, int);
83 static int can_use_hardware_watchpoint (struct value
*);
85 static void break_at_finish_command (char *, int);
86 static void break_at_finish_at_depth_command (char *, int);
88 static void tbreak_at_finish_command (char *, int);
90 static void break_command_1 (char *, int, int);
92 static void mention (struct breakpoint
*);
94 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
);
96 static void check_duplicates (CORE_ADDR
, asection
*);
98 static void describe_other_breakpoints (CORE_ADDR
, asection
*);
100 static void breakpoints_info (char *, int);
102 static void breakpoint_1 (int, int);
104 static bpstat
bpstat_alloc (struct breakpoint
*, bpstat
);
106 static int breakpoint_cond_eval (PTR
);
108 static void cleanup_executing_breakpoints (PTR
);
110 static void commands_command (char *, int);
112 static void condition_command (char *, int);
114 static int get_number_trailer (char **, int);
116 void set_breakpoint_count (int);
119 static struct breakpoint
*create_temp_exception_breakpoint (CORE_ADDR
);
129 static int remove_breakpoint (struct breakpoint
*, insertion_state_t
);
131 static enum print_stop_action
print_it_typical (bpstat
);
133 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
137 enum exception_event_kind kind
;
140 args_for_catchpoint_enable
;
142 static int watchpoint_check (PTR
);
144 static int cover_target_enable_exception_callback (PTR
);
146 static void maintenance_info_breakpoints (char *, int);
148 #ifdef GET_LONGJMP_TARGET
149 static void create_longjmp_breakpoint (char *);
152 static int hw_breakpoint_used_count (void);
154 static int hw_watchpoint_used_count (enum bptype
, int *);
156 static void hbreak_command (char *, int);
158 static void thbreak_command (char *, int);
160 static void watch_command_1 (char *, int, int);
162 static void rwatch_command (char *, int);
164 static void awatch_command (char *, int);
166 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
168 static void solib_load_unload_1 (char *hookname
,
171 char *cond_string
, enum bptype bp_kind
);
173 static void create_fork_vfork_event_catchpoint (int tempflag
,
175 enum bptype bp_kind
);
177 static void break_at_finish_at_depth_command_1 (char *arg
,
178 int flag
, int from_tty
);
180 static void break_at_finish_command_1 (char *arg
, int flag
, int from_tty
);
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 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
195 static void catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
);
198 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
199 enum exception_event_kind ex_event
,
200 struct symtab_and_line
*sal
);
202 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
203 char *arg
, int tempflag
, int from_tty
);
205 static void tcatch_command (char *arg
, int from_tty
);
207 static void ep_skip_leading_whitespace (char **s
);
209 /* Prototypes for exported functions. */
211 /* If FALSE, gdb will not use hardware support for watchpoints, even
212 if such is available. */
213 static int can_use_hw_watchpoints
;
215 void _initialize_breakpoint (void);
217 extern int addressprint
; /* Print machine addresses? */
219 static int internal_breakpoint_number
= -1;
221 /* Are we executing breakpoint commands? */
222 static int executing_breakpoint_commands
;
224 /* Walk the following statement or block through all breakpoints.
225 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
228 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
230 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
231 for (B = breakpoint_chain; \
232 B ? (TMP=B->next, 1): 0; \
235 /* True if SHIFT_INST_REGS defined, false otherwise. */
237 int must_shift_inst_regs
=
238 #if defined(SHIFT_INST_REGS)
245 /* True if breakpoint hit counts should be displayed in breakpoint info. */
247 int show_breakpoint_hit_counts
= 1;
249 /* Chain of all breakpoints defined. */
251 struct breakpoint
*breakpoint_chain
;
253 /* Number of last breakpoint made. */
255 int breakpoint_count
;
257 /* Pointer to current exception event record */
258 static struct exception_event_record
*current_exception_event
;
260 /* Indicator of whether exception catchpoints should be nuked
261 between runs of a program */
262 int exception_catchpoints_are_fragile
= 0;
264 /* Indicator of when exception catchpoints set-up should be
265 reinitialized -- e.g. when program is re-run */
266 int exception_support_initialized
= 0;
268 /* This function returns a pointer to the string representation of the
269 pathname of the dynamically-linked library that has just been
272 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
273 or undefined results are guaranteed.
275 This string's contents are only valid immediately after the
276 inferior has stopped in the dynamic linker hook, and becomes
277 invalid as soon as the inferior is continued. Clients should make
278 a copy of this string if they wish to continue the inferior and
279 then access the string. */
281 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
282 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
285 /* This function returns a pointer to the string representation of the
286 pathname of the dynamically-linked library that has just been
289 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
290 TRUE, or undefined results are guaranteed.
292 This string's contents are only valid immediately after the
293 inferior has stopped in the dynamic linker hook, and becomes
294 invalid as soon as the inferior is continued. Clients should make
295 a copy of this string if they wish to continue the inferior and
296 then access the string. */
298 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
299 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
302 /* This function is called by the "catch load" command. It allows the
303 debugger to be notified by the dynamic linker when a specified
304 library file (or any library file, if filename is NULL) is loaded. */
306 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
307 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
308 error ("catch of library loads not yet implemented on this platform")
311 /* This function is called by the "catch unload" command. It allows
312 the debugger to be notified by the dynamic linker when a specified
313 library file (or any library file, if filename is NULL) is
316 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
317 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
318 error ("catch of library unloads not yet implemented on this platform")
321 /* Set breakpoint count to NUM. */
324 set_breakpoint_count (int num
)
326 breakpoint_count
= num
;
327 set_internalvar (lookup_internalvar ("bpnum"),
328 value_from_longest (builtin_type_int
, (LONGEST
) num
));
331 /* Used in run_command to zero the hit count when a new run starts. */
334 clear_breakpoint_hit_counts (void)
336 struct breakpoint
*b
;
342 /* Default address, symtab and line to put a breakpoint at
343 for "break" command with no arg.
344 if default_breakpoint_valid is zero, the other three are
345 not valid, and "break" with no arg is an error.
347 This set by print_stack_frame, which calls set_default_breakpoint. */
349 int default_breakpoint_valid
;
350 CORE_ADDR default_breakpoint_address
;
351 struct symtab
*default_breakpoint_symtab
;
352 int default_breakpoint_line
;
354 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
355 Advance *PP after the string and any trailing whitespace.
357 Currently the string can either be a number or "$" followed by the name
358 of a convenience variable. Making it an expression wouldn't work well
359 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
361 TRAILER is a character which can be found after the number; most
362 commonly this is `-'. If you don't want a trailer, use \0. */
364 get_number_trailer (char **pp
, int trailer
)
366 int retval
= 0; /* default */
370 /* Empty line means refer to the last breakpoint. */
371 return breakpoint_count
;
374 /* Make a copy of the name, so we can null-terminate it
375 to pass to lookup_internalvar(). */
380 while (isalnum (*p
) || *p
== '_')
382 varname
= (char *) alloca (p
- start
+ 1);
383 strncpy (varname
, start
, p
- start
);
384 varname
[p
- start
] = '\0';
385 val
= value_of_internalvar (lookup_internalvar (varname
));
386 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_INT
)
387 retval
= (int) value_as_long (val
);
390 printf_filtered ("Convenience variable must have integer value.\n");
398 while (*p
>= '0' && *p
<= '9')
401 /* There is no number here. (e.g. "cond a == b"). */
403 /* Skip non-numeric token */
404 while (*p
&& !isspace((int) *p
))
406 /* Return zero, which caller must interpret as error. */
412 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
414 /* Trailing junk: return 0 and let caller print error msg. */
415 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
426 /* Like get_number_trailer, but don't allow a trailer. */
428 get_number (char **pp
)
430 return get_number_trailer (pp
, '\0');
433 /* Parse a number or a range.
434 * A number will be of the form handled by get_number.
435 * A range will be of the form <number1> - <number2>, and
436 * will represent all the integers between number1 and number2,
439 * While processing a range, this fuction is called iteratively;
440 * At each call it will return the next value in the range.
442 * At the beginning of parsing a range, the char pointer PP will
443 * be advanced past <number1> and left pointing at the '-' token.
444 * Subsequent calls will not advance the pointer until the range
445 * is completed. The call that completes the range will advance
446 * pointer PP past <number2>.
450 get_number_or_range (char **pp
)
452 static int last_retval
, end_value
;
453 static char *end_ptr
;
454 static int in_range
= 0;
458 /* Default case: pp is pointing either to a solo number,
459 or to the first number of a range. */
460 last_retval
= get_number_trailer (pp
, '-');
465 /* This is the start of a range (<number1> - <number2>).
466 Skip the '-', parse and remember the second number,
467 and also remember the end of the final token. */
471 while (isspace ((int) *end_ptr
))
472 end_ptr
++; /* skip white space */
473 end_value
= get_number (temp
);
474 if (end_value
< last_retval
)
476 error ("inverted range");
478 else if (end_value
== last_retval
)
480 /* degenerate range (number1 == number2). Advance the
481 token pointer so that the range will be treated as a
490 error ("negative value");
493 /* pp points to the '-' that betokens a range. All
494 number-parsing has already been done. Return the next
495 integer value (one greater than the saved previous value).
496 Do not advance the token pointer 'pp' until the end of range
499 if (++last_retval
== end_value
)
501 /* End of range reached; advance token pointer. */
511 /* condition N EXP -- set break condition of breakpoint N to EXP. */
514 condition_command (char *arg
, int from_tty
)
516 register struct breakpoint
*b
;
521 error_no_arg ("breakpoint number");
524 bnum
= get_number (&p
);
526 error ("Bad breakpoint argument: '%s'", arg
);
529 if (b
->number
== bnum
)
536 if (b
->cond_string
!= NULL
)
537 xfree (b
->cond_string
);
542 b
->cond_string
= NULL
;
544 printf_filtered ("Breakpoint %d now unconditional.\n", bnum
);
549 /* I don't know if it matters whether this is the string the user
550 typed in or the decompiled expression. */
551 b
->cond_string
= savestring (arg
, strlen (arg
));
552 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->address
), 0);
554 error ("Junk at end of expression");
556 breakpoints_changed ();
560 error ("No breakpoint number %d.", bnum
);
565 commands_command (char *arg
, int from_tty
)
567 register struct breakpoint
*b
;
570 struct command_line
*l
;
572 /* If we allowed this, we would have problems with when to
573 free the storage, if we change the commands currently
576 if (executing_breakpoint_commands
)
577 error ("Can't use the \"commands\" command among a breakpoint's commands.");
580 bnum
= get_number (&p
);
583 error ("Unexpected extra arguments following breakpoint number.");
586 if (b
->number
== bnum
)
590 "Type commands for when breakpoint %d is hit, one per line.",
592 l
= read_command_lines (tmpbuf
, from_tty
);
593 free_command_lines (&b
->commands
);
595 breakpoints_changed ();
598 error ("No breakpoint number %d.", bnum
);
601 /* Like target_read_memory() but if breakpoints are inserted, return
602 the shadow contents instead of the breakpoints themselves.
604 Read "memory data" from whatever target or inferior we have.
605 Returns zero if successful, errno value if not. EIO is used
606 for address out of bounds. If breakpoints are inserted, returns
607 shadow contents, not the breakpoints themselves. From breakpoint.c. */
610 read_memory_nobpt (CORE_ADDR memaddr
, char *myaddr
, unsigned len
)
613 struct breakpoint
*b
;
614 CORE_ADDR bp_addr
= 0;
617 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
618 /* No breakpoints on this machine. */
619 return target_read_memory (memaddr
, myaddr
, len
);
623 if (b
->type
== bp_none
)
624 warning ("reading through apparently deleted breakpoint #%d?",
627 /* memory breakpoint? */
628 if (b
->type
== bp_watchpoint
629 || b
->type
== bp_hardware_watchpoint
630 || b
->type
== bp_read_watchpoint
631 || b
->type
== bp_access_watchpoint
)
636 /* Addresses and length of the part of the breakpoint that
638 /* XXXX The m68k, sh and h8300 have different local and remote
639 breakpoint values. BREAKPOINT_FROM_PC still manages to
640 correctly determine the breakpoints memory address and size
641 for these targets. */
642 bp_addr
= b
->address
;
644 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
649 if (bp_addr
+ bp_size
<= memaddr
)
650 /* The breakpoint is entirely before the chunk of memory we
653 if (bp_addr
>= memaddr
+ len
)
654 /* The breakpoint is entirely after the chunk of memory we are
657 /* Copy the breakpoint from the shadow contents, and recurse for
658 the things before and after. */
660 /* Offset within shadow_contents. */
663 if (bp_addr
< memaddr
)
665 /* Only copy the second part of the breakpoint. */
666 bp_size
-= memaddr
- bp_addr
;
667 bptoffset
= memaddr
- bp_addr
;
671 if (bp_addr
+ bp_size
> memaddr
+ len
)
673 /* Only copy the first part of the breakpoint. */
674 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
677 memcpy (myaddr
+ bp_addr
- memaddr
,
678 b
->shadow_contents
+ bptoffset
, bp_size
);
680 if (bp_addr
> memaddr
)
682 /* Copy the section of memory before the breakpoint. */
683 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
688 if (bp_addr
+ bp_size
< memaddr
+ len
)
690 /* Copy the section of memory after the breakpoint. */
691 status
= read_memory_nobpt (bp_addr
+ bp_size
,
692 myaddr
+ bp_addr
+ bp_size
- memaddr
,
693 memaddr
+ len
- (bp_addr
+ bp_size
));
700 /* Nothing overlaps. Just call read_memory_noerr. */
701 return target_read_memory (memaddr
, myaddr
, len
);
705 /* insert_breakpoints is used when starting or continuing the program.
706 remove_breakpoints is used when the program stops.
707 Both return zero if successful,
708 or an `errno' value if could not write the inferior. */
711 insert_breakpoints (void)
713 register struct breakpoint
*b
, *temp
;
714 int return_val
= 0; /* return success code. */
716 int disabled_breaks
= 0;
718 static char message1
[] = "Error inserting catchpoint %d:\n";
719 static char message
[sizeof (message1
) + 30];
722 ALL_BREAKPOINTS_SAFE (b
, temp
)
724 if (b
->enable
== permanent
)
725 /* Permanent breakpoints cannot be inserted or removed. */
727 else if (b
->type
!= bp_watchpoint
728 && b
->type
!= bp_hardware_watchpoint
729 && b
->type
!= bp_read_watchpoint
730 && b
->type
!= bp_access_watchpoint
731 && b
->type
!= bp_catch_fork
732 && b
->type
!= bp_catch_vfork
733 && b
->type
!= bp_catch_exec
734 && b
->type
!= bp_catch_throw
735 && b
->type
!= bp_catch_catch
736 && b
->enable
!= disabled
737 && b
->enable
!= shlib_disabled
738 && b
->enable
!= call_disabled
742 if (b
->type
== bp_hardware_breakpoint
)
743 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
746 /* Check to see if breakpoint is in an overlay section;
747 if so, we should set the breakpoint at the LMA address.
748 Only if the section is currently mapped should we ALSO
749 set a break at the VMA address. */
750 if (overlay_debugging
&& b
->section
&&
751 section_is_overlay (b
->section
))
755 addr
= overlay_unmapped_address (b
->address
, b
->section
);
756 val
= target_insert_breakpoint (addr
, b
->shadow_contents
);
757 /* This would be the time to check val, to see if the
758 breakpoint write to the load address succeeded.
759 However, this might be an ordinary occurrance, eg. if
760 the unmapped overlay is in ROM. */
761 val
= 0; /* in case unmapped address failed */
762 if (section_is_mapped (b
->section
))
763 val
= target_insert_breakpoint (b
->address
,
766 else /* ordinary (non-overlay) address */
767 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
771 /* Can't set the breakpoint. */
772 #if defined (DISABLE_UNSETTABLE_BREAK)
773 if (DISABLE_UNSETTABLE_BREAK (b
->address
))
775 /* See also: disable_breakpoints_in_shlibs. */
777 b
->enable
= shlib_disabled
;
778 if (!disabled_breaks
)
780 target_terminal_ours_for_output ();
781 warning ("Cannot insert breakpoint %d:", b
->number
);
782 warning ("Temporarily disabling shared library breakpoints:");
785 warning ("breakpoint #%d ", b
->number
);
790 target_terminal_ours_for_output ();
791 warning ("Cannot insert breakpoint %d:", b
->number
);
792 #ifdef ONE_PROCESS_WRITETEXT
793 warning ("The same program may be running in another process.");
795 memory_error (val
, b
->address
); /* which bombs us out */
802 return_val
= val
; /* remember failure */
804 else if (ep_is_exception_catchpoint (b
)
805 && b
->enable
!= disabled
806 && b
->enable
!= shlib_disabled
807 && b
->enable
!= call_disabled
812 /* If we get here, we must have a callback mechanism for exception
813 events -- with g++ style embedded label support, we insert
814 ordinary breakpoints and not catchpoints. */
815 /* Format possible error message */
816 sprintf (message
, message1
, b
->number
);
818 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
821 /* Couldn't set breakpoint for some reason */
822 target_terminal_ours_for_output ();
823 warning ("Cannot insert catchpoint %d; disabling it.",
825 b
->enable
= disabled
;
829 /* Bp set, now make sure callbacks are enabled */
831 args_for_catchpoint_enable args
;
832 args
.kind
= b
->type
== bp_catch_catch
?
833 EX_EVENT_CATCH
: EX_EVENT_THROW
;
835 val
= catch_errors (cover_target_enable_exception_callback
,
837 message
, RETURN_MASK_ALL
);
838 if (val
!= 0 && val
!= -1)
842 /* Check if something went wrong; val == 0 can be ignored */
845 /* something went wrong */
846 target_terminal_ours_for_output ();
847 warning ("Cannot insert catchpoint %d; disabling it.",
849 b
->enable
= disabled
;
854 return_val
= val
; /* remember failure */
857 else if ((b
->type
== bp_hardware_watchpoint
||
858 b
->type
== bp_read_watchpoint
||
859 b
->type
== bp_access_watchpoint
)
860 && b
->enable
== enabled
861 && b
->disposition
!= del_at_next_stop
865 struct frame_info
*saved_frame
;
866 int saved_level
, within_current_scope
;
867 value_ptr mark
= value_mark ();
870 /* Save the current frame and level so we can restore it after
871 evaluating the watchpoint expression on its own frame. */
872 saved_frame
= selected_frame
;
873 saved_level
= selected_frame_level
;
875 /* Determine if the watchpoint is within scope. */
876 if (b
->exp_valid_block
== NULL
)
877 within_current_scope
= 1;
880 struct frame_info
*fi
;
882 /* There might be no current frame at this moment if we are
883 resuming from a step over a breakpoint.
884 Set up current frame before trying to find the watchpoint
886 get_current_frame ();
887 fi
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
888 within_current_scope
= (fi
!= NULL
);
889 if (within_current_scope
)
890 select_frame (fi
, -1);
893 if (within_current_scope
)
895 /* Evaluate the expression and cut the chain of values
896 produced off from the value chain.
898 Make sure the value returned isn't lazy; we use
899 laziness to determine what memory GDB actually needed
900 in order to compute the value of the expression. */
901 v
= evaluate_expression (b
->exp
);
903 value_release_to_mark (mark
);
908 /* Look at each value on the value chain. */
909 for (; v
; v
= v
->next
)
911 /* If it's a memory location, and GDB actually needed
912 its contents to evaluate the expression, then we
914 if (VALUE_LVAL (v
) == lval_memory
917 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
919 /* We only watch structs and arrays if user asked
920 for it explicitly, never if they just happen to
921 appear in the middle of some value chain. */
922 if (v
== b
->val_chain
923 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
924 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
929 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
930 len
= TYPE_LENGTH (VALUE_TYPE (v
));
932 if (b
->type
== bp_read_watchpoint
)
934 else if (b
->type
== bp_access_watchpoint
)
937 val
= target_insert_watchpoint (addr
, len
, type
);
940 /* Don't exit the loop, try to insert
941 every value on the value chain. That's
942 because we will be removing all the
943 watches below, and removing a
944 watchpoint we didn't insert could have
952 /* Failure to insert a watchpoint on any memory value in the
953 value chain brings us here. */
956 remove_breakpoint (b
, mark_uninserted
);
957 warning ("Could not insert hardware watchpoint %d.",
964 printf_filtered ("Hardware watchpoint %d deleted ", b
->number
);
965 printf_filtered ("because the program has left the block \n");
966 printf_filtered ("in which its expression is valid.\n");
967 if (b
->related_breakpoint
)
968 b
->related_breakpoint
->disposition
= del_at_next_stop
;
969 b
->disposition
= del_at_next_stop
;
972 /* Restore the frame and level. */
973 if ((saved_frame
!= selected_frame
) ||
974 (saved_level
!= selected_frame_level
))
975 select_frame (saved_frame
, saved_level
);
978 return_val
= val
; /* remember failure */
980 else if ((b
->type
== bp_catch_fork
981 || b
->type
== bp_catch_vfork
982 || b
->type
== bp_catch_exec
)
983 && b
->enable
== enabled
991 val
= target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
994 val
= target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
997 val
= target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
1000 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1005 target_terminal_ours_for_output ();
1006 warning ("Cannot insert catchpoint %d.", b
->number
);
1012 return_val
= val
; /* remember failure */
1021 remove_breakpoints (void)
1023 register struct breakpoint
*b
;
1030 val
= remove_breakpoint (b
, mark_uninserted
);
1039 remove_hw_watchpoints (void)
1041 register struct breakpoint
*b
;
1047 && (b
->type
== bp_hardware_watchpoint
1048 || b
->type
== bp_read_watchpoint
1049 || b
->type
== bp_access_watchpoint
))
1051 val
= remove_breakpoint (b
, mark_uninserted
);
1060 reattach_breakpoints (int pid
)
1062 register struct breakpoint
*b
;
1064 ptid_t saved_inferior_ptid
= inferior_ptid
;
1066 /* FIXME: use a cleanup, to insure that inferior_ptid gets replaced! */
1067 inferior_ptid
= pid_to_ptid (pid
); /* Because remove_breakpoint will use this global. */
1072 remove_breakpoint (b
, mark_inserted
);
1073 if (b
->type
== bp_hardware_breakpoint
)
1074 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
1076 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
1079 inferior_ptid
= saved_inferior_ptid
;
1084 inferior_ptid
= saved_inferior_ptid
;
1089 update_breakpoints_after_exec (void)
1091 struct breakpoint
*b
;
1092 struct breakpoint
*temp
;
1094 /* Doing this first prevents the badness of having delete_breakpoint()
1095 write a breakpoint's current "shadow contents" to lift the bp. That
1096 shadow is NOT valid after an exec()! */
1097 mark_breakpoints_out ();
1099 ALL_BREAKPOINTS_SAFE (b
, temp
)
1101 /* Solib breakpoints must be explicitly reset after an exec(). */
1102 if (b
->type
== bp_shlib_event
)
1104 delete_breakpoint (b
);
1108 /* Thread event breakpoints must be set anew after an exec(). */
1109 if (b
->type
== bp_thread_event
)
1111 delete_breakpoint (b
);
1115 /* Step-resume breakpoints are meaningless after an exec(). */
1116 if (b
->type
== bp_step_resume
)
1118 delete_breakpoint (b
);
1122 /* Ditto the sigtramp handler breakpoints. */
1123 if (b
->type
== bp_through_sigtramp
)
1125 delete_breakpoint (b
);
1129 /* Ditto the exception-handling catchpoints. */
1130 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1132 delete_breakpoint (b
);
1136 /* Don't delete an exec catchpoint, because else the inferior
1137 won't stop when it ought!
1139 Similarly, we probably ought to keep vfork catchpoints, 'cause
1140 on this target, we may not be able to stop when the vfork is
1141 seen, but only when the subsequent exec is seen. (And because
1142 deleting fork catchpoints here but not vfork catchpoints will
1143 seem mysterious to users, keep those too.)
1145 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1146 target address field, if any, is sufficient to have it be reset
1147 automagically. Certainly on HP-UX that's true. */
1148 if ((b
->type
== bp_catch_exec
) ||
1149 (b
->type
== bp_catch_vfork
) ||
1150 (b
->type
== bp_catch_fork
))
1152 b
->address
= (CORE_ADDR
) NULL
;
1156 /* bp_finish is a special case. The only way we ought to be able
1157 to see one of these when an exec() has happened, is if the user
1158 caught a vfork, and then said "finish". Ordinarily a finish just
1159 carries them to the call-site of the current callee, by setting
1160 a temporary bp there and resuming. But in this case, the finish
1161 will carry them entirely through the vfork & exec.
1163 We don't want to allow a bp_finish to remain inserted now. But
1164 we can't safely delete it, 'cause finish_command has a handle to
1165 the bp on a bpstat, and will later want to delete it. There's a
1166 chance (and I've seen it happen) that if we delete the bp_finish
1167 here, that its storage will get reused by the time finish_command
1168 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1169 We really must allow finish_command to delete a bp_finish.
1171 In the absense of a general solution for the "how do we know
1172 it's safe to delete something others may have handles to?"
1173 problem, what we'll do here is just uninsert the bp_finish, and
1174 let finish_command delete it.
1176 (We know the bp_finish is "doomed" in the sense that it's
1177 momentary, and will be deleted as soon as finish_command sees
1178 the inferior stopped. So it doesn't matter that the bp's
1179 address is probably bogus in the new a.out, unlike e.g., the
1180 solib breakpoints.) */
1182 if (b
->type
== bp_finish
)
1187 /* Without a symbolic address, we have little hope of the
1188 pre-exec() address meaning the same thing in the post-exec()
1190 if (b
->addr_string
== NULL
)
1192 delete_breakpoint (b
);
1196 /* If this breakpoint has survived the above battery of checks, then
1197 it must have a symbolic address. Be sure that it gets reevaluated
1198 to a target address, rather than reusing the old evaluation. */
1199 b
->address
= (CORE_ADDR
) NULL
;
1204 detach_breakpoints (int pid
)
1206 register struct breakpoint
*b
;
1208 ptid_t saved_inferior_ptid
= inferior_ptid
;
1210 if (pid
== PIDGET (inferior_ptid
))
1211 error ("Cannot detach breakpoints of inferior_ptid");
1213 /* FIXME: use a cleanup, to insure that inferior_ptid gets replaced! */
1214 inferior_ptid
= pid_to_ptid (pid
); /* Because remove_breakpoint will use this global. */
1219 val
= remove_breakpoint (b
, mark_inserted
);
1222 inferior_ptid
= saved_inferior_ptid
;
1227 inferior_ptid
= saved_inferior_ptid
;
1232 remove_breakpoint (struct breakpoint
*b
, insertion_state_t is
)
1236 if (b
->enable
== permanent
)
1237 /* Permanent breakpoints cannot be inserted or removed. */
1240 if (b
->type
== bp_none
)
1241 warning ("attempted to remove apparently deleted breakpoint #%d?",
1244 if (b
->type
!= bp_watchpoint
1245 && b
->type
!= bp_hardware_watchpoint
1246 && b
->type
!= bp_read_watchpoint
1247 && b
->type
!= bp_access_watchpoint
1248 && b
->type
!= bp_catch_fork
1249 && b
->type
!= bp_catch_vfork
1250 && b
->type
!= bp_catch_exec
1251 && b
->type
!= bp_catch_catch
1252 && b
->type
!= bp_catch_throw
)
1254 if (b
->type
== bp_hardware_breakpoint
)
1255 val
= target_remove_hw_breakpoint (b
->address
, b
->shadow_contents
);
1258 /* Check to see if breakpoint is in an overlay section;
1259 if so, we should remove the breakpoint at the LMA address.
1260 If that is not equal to the raw address, then we should
1261 presumably remove the breakpoint there as well. */
1262 if (overlay_debugging
&& b
->section
&&
1263 section_is_overlay (b
->section
))
1267 addr
= overlay_unmapped_address (b
->address
, b
->section
);
1268 val
= target_remove_breakpoint (addr
, b
->shadow_contents
);
1269 /* This would be the time to check val, to see if the
1270 shadow breakpoint write to the load address succeeded.
1271 However, this might be an ordinary occurrance, eg. if
1272 the unmapped overlay is in ROM. */
1273 val
= 0; /* in case unmapped address failed */
1274 if (section_is_mapped (b
->section
))
1275 val
= target_remove_breakpoint (b
->address
,
1276 b
->shadow_contents
);
1278 else /* ordinary (non-overlay) address */
1279 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1283 b
->inserted
= (is
== mark_inserted
);
1285 else if ((b
->type
== bp_hardware_watchpoint
||
1286 b
->type
== bp_read_watchpoint
||
1287 b
->type
== bp_access_watchpoint
)
1288 && b
->enable
== enabled
1293 b
->inserted
= (is
== mark_inserted
);
1294 /* Walk down the saved value chain. */
1295 for (v
= b
->val_chain
; v
; v
= v
->next
)
1297 /* For each memory reference remove the watchpoint
1299 if (VALUE_LVAL (v
) == lval_memory
1300 && ! VALUE_LAZY (v
))
1302 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
1304 if (v
== b
->val_chain
1305 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1306 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1311 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
1312 len
= TYPE_LENGTH (VALUE_TYPE (v
));
1314 if (b
->type
== bp_read_watchpoint
)
1316 else if (b
->type
== bp_access_watchpoint
)
1319 val
= target_remove_watchpoint (addr
, len
, type
);
1326 /* Failure to remove any of the hardware watchpoints comes here. */
1327 if ((is
== mark_uninserted
) && (b
->inserted
))
1328 warning ("Could not remove hardware watchpoint %d.",
1331 /* Free the saved value chain. We will construct a new one
1332 the next time the watchpoint is inserted. */
1333 for (v
= b
->val_chain
; v
; v
= n
)
1338 b
->val_chain
= NULL
;
1340 else if ((b
->type
== bp_catch_fork
||
1341 b
->type
== bp_catch_vfork
||
1342 b
->type
== bp_catch_exec
)
1343 && b
->enable
== enabled
1350 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1352 case bp_catch_vfork
:
1353 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1356 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1359 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1364 b
->inserted
= (is
== mark_inserted
);
1366 else if ((b
->type
== bp_catch_catch
||
1367 b
->type
== bp_catch_throw
)
1368 && b
->enable
== enabled
1372 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1375 b
->inserted
= (is
== mark_inserted
);
1377 else if (ep_is_exception_catchpoint (b
)
1378 && b
->inserted
/* sometimes previous insert doesn't happen */
1379 && b
->enable
== enabled
1383 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1387 b
->inserted
= (is
== mark_inserted
);
1393 /* Clear the "inserted" flag in all breakpoints. */
1396 mark_breakpoints_out (void)
1398 register struct breakpoint
*b
;
1404 /* Clear the "inserted" flag in all breakpoints and delete any
1405 breakpoints which should go away between runs of the program.
1407 Plus other such housekeeping that has to be done for breakpoints
1410 Note: this function gets called at the end of a run (by
1411 generic_mourn_inferior) and when a run begins (by
1412 init_wait_for_inferior). */
1417 breakpoint_init_inferior (enum inf_context context
)
1419 register struct breakpoint
*b
, *temp
;
1420 static int warning_needed
= 0;
1422 ALL_BREAKPOINTS_SAFE (b
, temp
)
1429 case bp_watchpoint_scope
:
1431 /* If the call dummy breakpoint is at the entry point it will
1432 cause problems when the inferior is rerun, so we better
1435 Also get rid of scope breakpoints. */
1436 delete_breakpoint (b
);
1440 case bp_hardware_watchpoint
:
1441 case bp_read_watchpoint
:
1442 case bp_access_watchpoint
:
1444 /* Likewise for watchpoints on local expressions. */
1445 if (b
->exp_valid_block
!= NULL
)
1446 delete_breakpoint (b
);
1449 /* Likewise for exception catchpoints in dynamic-linked
1450 executables where required */
1451 if (ep_is_exception_catchpoint (b
) &&
1452 exception_catchpoints_are_fragile
)
1455 delete_breakpoint (b
);
1461 if (exception_catchpoints_are_fragile
)
1462 exception_support_initialized
= 0;
1464 /* Don't issue the warning unless it's really needed... */
1465 if (warning_needed
&& (context
!= inf_exited
))
1467 warning ("Exception catchpoints from last run were deleted.");
1468 warning ("You must reinsert them explicitly.");
1473 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1474 exists at PC. It returns ordinary_breakpoint_here if it's an
1475 ordinary breakpoint, or permanent_breakpoint_here if it's a
1476 permanent breakpoint.
1477 - When continuing from a location with an ordinary breakpoint, we
1478 actually single step once before calling insert_breakpoints.
1479 - When continuing from a localion with a permanent breakpoint, we
1480 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1481 the target, to advance the PC past the breakpoint. */
1483 enum breakpoint_here
1484 breakpoint_here_p (CORE_ADDR pc
)
1486 register struct breakpoint
*b
;
1487 int any_breakpoint_here
= 0;
1490 if ((b
->enable
== enabled
1491 || b
->enable
== permanent
)
1492 && b
->address
== pc
) /* bp is enabled and matches pc */
1494 if (overlay_debugging
&&
1495 section_is_overlay (b
->section
) &&
1496 !section_is_mapped (b
->section
))
1497 continue; /* unmapped overlay -- can't be a match */
1498 else if (b
->enable
== permanent
)
1499 return permanent_breakpoint_here
;
1501 any_breakpoint_here
= 1;
1504 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1508 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1509 but it only returns true if there is actually a breakpoint inserted
1513 breakpoint_inserted_here_p (CORE_ADDR pc
)
1515 register struct breakpoint
*b
;
1519 && b
->address
== pc
) /* bp is inserted and matches pc */
1521 if (overlay_debugging
&&
1522 section_is_overlay (b
->section
) &&
1523 !section_is_mapped (b
->section
))
1524 continue; /* unmapped overlay -- can't be a match */
1532 /* Return nonzero if FRAME is a dummy frame. We can't use
1533 PC_IN_CALL_DUMMY because figuring out the saved SP would take too
1534 much time, at least using get_saved_register on the 68k. This
1535 means that for this function to work right a port must use the
1536 bp_call_dummy breakpoint. */
1539 frame_in_dummy (struct frame_info
*frame
)
1541 struct breakpoint
*b
;
1546 if (USE_GENERIC_DUMMY_FRAMES
)
1547 return generic_pc_in_call_dummy (frame
->pc
, frame
->frame
, frame
->frame
);
1551 if (b
->type
== bp_call_dummy
1552 && b
->frame
== frame
->frame
1553 /* We need to check the PC as well as the frame on the sparc,
1554 for signals.exp in the testsuite. */
1557 - SIZEOF_CALL_DUMMY_WORDS
/ sizeof (LONGEST
) * REGISTER_SIZE
))
1558 && frame
->pc
<= b
->address
)
1564 /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
1565 PC is valid for process/thread PID. */
1568 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1570 struct breakpoint
*b
;
1573 thread
= pid_to_thread_id (ptid
);
1576 if (b
->enable
!= disabled
1577 && b
->enable
!= shlib_disabled
1578 && b
->enable
!= call_disabled
1580 && (b
->thread
== -1 || b
->thread
== thread
))
1582 if (overlay_debugging
&&
1583 section_is_overlay (b
->section
) &&
1584 !section_is_mapped (b
->section
))
1585 continue; /* unmapped overlay -- can't be a match */
1594 /* bpstat stuff. External routines' interfaces are documented
1598 ep_is_catchpoint (struct breakpoint
*ep
)
1601 (ep
->type
== bp_catch_load
)
1602 || (ep
->type
== bp_catch_unload
)
1603 || (ep
->type
== bp_catch_fork
)
1604 || (ep
->type
== bp_catch_vfork
)
1605 || (ep
->type
== bp_catch_exec
)
1606 || (ep
->type
== bp_catch_catch
)
1607 || (ep
->type
== bp_catch_throw
);
1609 /* ??rehrauer: Add more kinds here, as are implemented... */
1613 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1616 (ep
->type
== bp_catch_load
)
1617 || (ep
->type
== bp_catch_unload
);
1621 ep_is_exception_catchpoint (struct breakpoint
*ep
)
1624 (ep
->type
== bp_catch_catch
)
1625 || (ep
->type
== bp_catch_throw
);
1628 /* Clear a bpstat so that it says we are not at any breakpoint.
1629 Also free any storage that is part of a bpstat. */
1632 bpstat_clear (bpstat
*bsp
)
1643 if (p
->old_val
!= NULL
)
1644 value_free (p
->old_val
);
1651 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1652 is part of the bpstat is copied as well. */
1655 bpstat_copy (bpstat bs
)
1659 bpstat retval
= NULL
;
1664 for (; bs
!= NULL
; bs
= bs
->next
)
1666 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1667 memcpy (tmp
, bs
, sizeof (*tmp
));
1669 /* This is the first thing in the chain. */
1679 /* Find the bpstat associated with this breakpoint */
1682 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1687 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1689 if (bsp
->breakpoint_at
== breakpoint
)
1695 /* Find a step_resume breakpoint associated with this bpstat.
1696 (If there are multiple step_resume bp's on the list, this function
1697 will arbitrarily pick one.)
1699 It is an error to use this function if BPSTAT doesn't contain a
1700 step_resume breakpoint.
1702 See wait_for_inferior's use of this function. */
1704 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1707 error ("Internal error (bpstat_find_step_resume_breakpoint)");
1709 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1711 if ((bsp
->breakpoint_at
!= NULL
) &&
1712 (bsp
->breakpoint_at
->type
== bp_step_resume
))
1713 return bsp
->breakpoint_at
;
1716 error ("Internal error (no step_resume breakpoint found)");
1720 /* Return the breakpoint number of the first breakpoint we are stopped
1721 at. *BSP upon return is a bpstat which points to the remaining
1722 breakpoints stopped at (but which is not guaranteed to be good for
1723 anything but further calls to bpstat_num).
1724 Return 0 if passed a bpstat which does not indicate any breakpoints. */
1727 bpstat_num (bpstat
*bsp
)
1729 struct breakpoint
*b
;
1732 return 0; /* No more breakpoint values */
1735 b
= (*bsp
)->breakpoint_at
;
1736 *bsp
= (*bsp
)->next
;
1738 return -1; /* breakpoint that's been deleted since */
1740 return b
->number
; /* We have its number */
1744 /* Modify BS so that the actions will not be performed. */
1747 bpstat_clear_actions (bpstat bs
)
1749 for (; bs
!= NULL
; bs
= bs
->next
)
1751 bs
->commands
= NULL
;
1752 if (bs
->old_val
!= NULL
)
1754 value_free (bs
->old_val
);
1760 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1763 cleanup_executing_breakpoints (PTR ignore
)
1765 executing_breakpoint_commands
= 0;
1768 /* Execute all the commands associated with all the breakpoints at this
1769 location. Any of these commands could cause the process to proceed
1770 beyond this point, etc. We look out for such changes by checking
1771 the global "breakpoint_proceeded" after each command. */
1774 bpstat_do_actions (bpstat
*bsp
)
1777 struct cleanup
*old_chain
;
1778 struct command_line
*cmd
;
1780 /* Avoid endless recursion if a `source' command is contained
1782 if (executing_breakpoint_commands
)
1785 executing_breakpoint_commands
= 1;
1786 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
1789 /* Note that (as of this writing), our callers all appear to
1790 be passing us the address of global stop_bpstat. And, if
1791 our calls to execute_control_command cause the inferior to
1792 proceed, that global (and hence, *bsp) will change.
1794 We must be careful to not touch *bsp unless the inferior
1795 has not proceeded. */
1797 /* This pointer will iterate over the list of bpstat's. */
1800 breakpoint_proceeded
= 0;
1801 for (; bs
!= NULL
; bs
= bs
->next
)
1806 execute_control_command (cmd
);
1808 if (breakpoint_proceeded
)
1813 if (breakpoint_proceeded
)
1814 /* The inferior is proceeded by the command; bomb out now.
1815 The bpstat chain has been blown away by wait_for_inferior.
1816 But since execution has stopped again, there is a new bpstat
1817 to look at, so start over. */
1820 bs
->commands
= NULL
;
1823 executing_breakpoint_commands
= 0;
1824 discard_cleanups (old_chain
);
1827 /* This is the normal print function for a bpstat. In the future,
1828 much of this logic could (should?) be moved to bpstat_stop_status,
1829 by having it set different print_it values.
1831 Current scheme: When we stop, bpstat_print() is called. It loops
1832 through the bpstat list of things causing this stop, calling the
1833 print_bp_stop_message function on each one. The behavior of the
1834 print_bp_stop_message function depends on the print_it field of
1835 bpstat. If such field so indicates, call this function here.
1837 Return values from this routine (ultimately used by bpstat_print()
1838 and normal_stop() to decide what to do):
1839 PRINT_NOTHING: Means we already printed all we needed to print,
1840 don't print anything else.
1841 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
1842 that something to be followed by a location.
1843 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
1844 that something to be followed by a location.
1845 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
1848 static enum print_stop_action
1849 print_it_typical (bpstat bs
)
1852 struct cleanup
*old_chain
;
1853 struct ui_stream
*stb
;
1854 stb
= ui_out_stream_new (uiout
);
1855 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1857 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
1858 which has since been deleted. */
1859 if (bs
->breakpoint_at
== NULL
)
1860 return PRINT_UNKNOWN
;
1862 switch (bs
->breakpoint_at
->type
)
1865 case bp_hardware_breakpoint
:
1867 annotate_breakpoint (bs
->breakpoint_at
->number
);
1868 ui_out_text (uiout
, "\nBreakpoint ");
1869 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
1870 ui_out_field_string (uiout
, "reason", "breakpoint-hit");
1871 ui_out_field_int (uiout
, "bkptno", bs
->breakpoint_at
->number
);
1872 ui_out_text (uiout
, ", ");
1873 return PRINT_SRC_AND_LOC
;
1875 /* I think the user probably only wants to see one breakpoint
1876 number, not all of them. */
1877 annotate_breakpoint (bs
->breakpoint_at
->number
);
1878 printf_filtered ("\nBreakpoint %d, ", bs
->breakpoint_at
->number
);
1879 return PRINT_SRC_AND_LOC
;
1883 case bp_shlib_event
:
1884 /* Did we stop because the user set the stop_on_solib_events
1885 variable? (If so, we report this as a generic, "Stopped due
1886 to shlib event" message.) */
1887 printf_filtered ("Stopped due to shared library event\n");
1888 return PRINT_NOTHING
;
1891 case bp_thread_event
:
1892 /* Not sure how we will get here.
1893 GDB should not stop for these breakpoints. */
1894 printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n");
1895 return PRINT_NOTHING
;
1899 annotate_catchpoint (bs
->breakpoint_at
->number
);
1900 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1901 printf_filtered ("loaded");
1902 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1903 return PRINT_SRC_AND_LOC
;
1906 case bp_catch_unload
:
1907 annotate_catchpoint (bs
->breakpoint_at
->number
);
1908 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1909 printf_filtered ("unloaded");
1910 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1911 return PRINT_SRC_AND_LOC
;
1915 annotate_catchpoint (bs
->breakpoint_at
->number
);
1916 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1917 printf_filtered ("forked");
1918 printf_filtered (" process %d), ",
1919 bs
->breakpoint_at
->forked_inferior_pid
);
1920 return PRINT_SRC_AND_LOC
;
1923 case bp_catch_vfork
:
1924 annotate_catchpoint (bs
->breakpoint_at
->number
);
1925 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1926 printf_filtered ("vforked");
1927 printf_filtered (" process %d), ",
1928 bs
->breakpoint_at
->forked_inferior_pid
);
1929 return PRINT_SRC_AND_LOC
;
1933 annotate_catchpoint (bs
->breakpoint_at
->number
);
1934 printf_filtered ("\nCatchpoint %d (exec'd %s), ",
1935 bs
->breakpoint_at
->number
,
1936 bs
->breakpoint_at
->exec_pathname
);
1937 return PRINT_SRC_AND_LOC
;
1940 case bp_catch_catch
:
1941 if (current_exception_event
&&
1942 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
1944 annotate_catchpoint (bs
->breakpoint_at
->number
);
1945 printf_filtered ("\nCatchpoint %d (exception caught), ",
1946 bs
->breakpoint_at
->number
);
1947 printf_filtered ("throw location ");
1948 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1949 printf_filtered ("%s:%d",
1950 CURRENT_EXCEPTION_THROW_FILE
,
1951 CURRENT_EXCEPTION_THROW_LINE
);
1953 printf_filtered ("unknown");
1955 printf_filtered (", catch location ");
1956 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1957 printf_filtered ("%s:%d",
1958 CURRENT_EXCEPTION_CATCH_FILE
,
1959 CURRENT_EXCEPTION_CATCH_LINE
);
1961 printf_filtered ("unknown");
1963 printf_filtered ("\n");
1964 /* don't bother to print location frame info */
1965 return PRINT_SRC_ONLY
;
1969 /* really throw, some other bpstat will handle it */
1970 return PRINT_UNKNOWN
;
1974 case bp_catch_throw
:
1975 if (current_exception_event
&&
1976 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
1978 annotate_catchpoint (bs
->breakpoint_at
->number
);
1979 printf_filtered ("\nCatchpoint %d (exception thrown), ",
1980 bs
->breakpoint_at
->number
);
1981 printf_filtered ("throw location ");
1982 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1983 printf_filtered ("%s:%d",
1984 CURRENT_EXCEPTION_THROW_FILE
,
1985 CURRENT_EXCEPTION_THROW_LINE
);
1987 printf_filtered ("unknown");
1989 printf_filtered (", catch location ");
1990 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1991 printf_filtered ("%s:%d",
1992 CURRENT_EXCEPTION_CATCH_FILE
,
1993 CURRENT_EXCEPTION_CATCH_LINE
);
1995 printf_filtered ("unknown");
1997 printf_filtered ("\n");
1998 /* don't bother to print location frame info */
1999 return PRINT_SRC_ONLY
;
2003 /* really catch, some other bpstat will handle it */
2004 return PRINT_UNKNOWN
;
2009 case bp_hardware_watchpoint
:
2010 if (bs
->old_val
!= NULL
)
2012 annotate_watchpoint (bs
->breakpoint_at
->number
);
2014 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2015 ui_out_field_string (uiout
, "reason", "watchpoint-trigger");
2016 mention (bs
->breakpoint_at
);
2017 ui_out_list_begin (uiout
, "value");
2018 ui_out_text (uiout
, "\nOld value = ");
2019 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2020 ui_out_field_stream (uiout
, "old", stb
);
2021 ui_out_text (uiout
, "\nNew value = ");
2022 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2023 ui_out_field_stream (uiout
, "new", stb
);
2024 ui_out_list_end (uiout
);
2025 ui_out_text (uiout
, "\n");
2027 mention (bs
->breakpoint_at
);
2028 printf_filtered ("\nOld value = ");
2029 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2030 printf_filtered ("\nNew value = ");
2031 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2032 Val_pretty_default
);
2033 printf_filtered ("\n");
2035 value_free (bs
->old_val
);
2038 /* More than one watchpoint may have been triggered. */
2039 return PRINT_UNKNOWN
;
2042 case bp_read_watchpoint
:
2044 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2045 ui_out_field_string (uiout
, "reason", "read-watchpoint-trigger");
2046 mention (bs
->breakpoint_at
);
2047 ui_out_list_begin (uiout
, "value");
2048 ui_out_text (uiout
, "\nValue = ");
2049 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2050 ui_out_field_stream (uiout
, "value", stb
);
2051 ui_out_list_end (uiout
);
2052 ui_out_text (uiout
, "\n");
2054 mention (bs
->breakpoint_at
);
2055 printf_filtered ("\nValue = ");
2056 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2057 Val_pretty_default
);
2058 printf_filtered ("\n");
2060 return PRINT_UNKNOWN
;
2063 case bp_access_watchpoint
:
2065 if (bs
->old_val
!= NULL
)
2067 annotate_watchpoint (bs
->breakpoint_at
->number
);
2068 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2069 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2070 mention (bs
->breakpoint_at
);
2071 ui_out_list_begin (uiout
, "value");
2072 ui_out_text (uiout
, "\nOld value = ");
2073 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2074 ui_out_field_stream (uiout
, "old", stb
);
2075 value_free (bs
->old_val
);
2077 ui_out_text (uiout
, "\nNew value = ");
2081 mention (bs
->breakpoint_at
);
2082 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2083 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2084 ui_out_list_begin (uiout
, "value");
2085 ui_out_text (uiout
, "\nValue = ");
2087 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0,Val_pretty_default
);
2088 ui_out_field_stream (uiout
, "new", stb
);
2089 ui_out_list_end (uiout
);
2090 ui_out_text (uiout
, "\n");
2092 if (bs
->old_val
!= NULL
)
2094 annotate_watchpoint (bs
->breakpoint_at
->number
);
2095 mention (bs
->breakpoint_at
);
2096 printf_filtered ("\nOld value = ");
2097 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2098 value_free (bs
->old_val
);
2100 printf_filtered ("\nNew value = ");
2104 mention (bs
->breakpoint_at
);
2105 printf_filtered ("\nValue = ");
2107 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2108 Val_pretty_default
);
2109 printf_filtered ("\n");
2111 return PRINT_UNKNOWN
;
2114 /* Fall through, we don't deal with these types of breakpoints
2119 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2120 ui_out_field_string (uiout
, "reason", "function-finished");
2122 return PRINT_UNKNOWN
;
2127 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2128 ui_out_field_string (uiout
, "reason", "location-reached");
2130 return PRINT_UNKNOWN
;
2135 case bp_longjmp_resume
:
2136 case bp_step_resume
:
2137 case bp_through_sigtramp
:
2138 case bp_watchpoint_scope
:
2141 return PRINT_UNKNOWN
;
2145 /* Generic routine for printing messages indicating why we
2146 stopped. The behavior of this function depends on the value
2147 'print_it' in the bpstat structure. Under some circumstances we
2148 may decide not to print anything here and delegate the task to
2151 static enum print_stop_action
2152 print_bp_stop_message (bpstat bs
)
2154 switch (bs
->print_it
)
2157 /* Nothing should be printed for this bpstat entry. */
2158 return PRINT_UNKNOWN
;
2162 /* We still want to print the frame, but we already printed the
2163 relevant messages. */
2164 return PRINT_SRC_AND_LOC
;
2167 case print_it_normal
:
2168 /* Normal case, we handle everything in print_it_typical. */
2169 return print_it_typical (bs
);
2172 internal_error (__FILE__
, __LINE__
,
2173 "print_bp_stop_message: unrecognized enum value");
2178 /* Print a message indicating what happened. This is called from
2179 normal_stop(). The input to this routine is the head of the bpstat
2180 list - a list of the eventpoints that caused this stop. This
2181 routine calls the generic print routine for printing a message
2182 about reasons for stopping. This will print (for example) the
2183 "Breakpoint n," part of the output. The return value of this
2186 PRINT_UNKNOWN: Means we printed nothing
2187 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2188 code to print the location. An example is
2189 "Breakpoint 1, " which should be followed by
2191 PRINT_SRC_ONLY: Means we printed something, but there is no need
2192 to also print the location part of the message.
2193 An example is the catch/throw messages, which
2194 don't require a location appended to the end.
2195 PRINT_NOTHING: We have done some printing and we don't need any
2196 further info to be printed.*/
2198 enum print_stop_action
2199 bpstat_print (bpstat bs
)
2203 /* Maybe another breakpoint in the chain caused us to stop.
2204 (Currently all watchpoints go on the bpstat whether hit or not.
2205 That probably could (should) be changed, provided care is taken
2206 with respect to bpstat_explains_signal). */
2207 for (; bs
; bs
= bs
->next
)
2209 val
= print_bp_stop_message (bs
);
2210 if (val
== PRINT_SRC_ONLY
2211 || val
== PRINT_SRC_AND_LOC
2212 || val
== PRINT_NOTHING
)
2216 /* We reached the end of the chain, or we got a null BS to start
2217 with and nothing was printed. */
2218 return PRINT_UNKNOWN
;
2221 /* Evaluate the expression EXP and return 1 if value is zero.
2222 This is used inside a catch_errors to evaluate the breakpoint condition.
2223 The argument is a "struct expression *" that has been cast to char * to
2224 make it pass through catch_errors. */
2227 breakpoint_cond_eval (PTR exp
)
2229 value_ptr mark
= value_mark ();
2230 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2231 value_free_to_mark (mark
);
2235 /* Allocate a new bpstat and chain it to the current one. */
2238 bpstat_alloc (struct breakpoint
*b
, bpstat cbs
/* Current "bs" value */ )
2242 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2244 bs
->breakpoint_at
= b
;
2245 /* If the condition is false, etc., don't do the commands. */
2246 bs
->commands
= NULL
;
2248 bs
->print_it
= print_it_normal
;
2252 /* Possible return values for watchpoint_check (this can't be an enum
2253 because of check_errors). */
2254 /* The watchpoint has been deleted. */
2255 #define WP_DELETED 1
2256 /* The value has changed. */
2257 #define WP_VALUE_CHANGED 2
2258 /* The value has not changed. */
2259 #define WP_VALUE_NOT_CHANGED 3
2261 #define BP_TEMPFLAG 1
2262 #define BP_HARDWAREFLAG 2
2264 /* Check watchpoint condition. */
2267 watchpoint_check (PTR p
)
2269 bpstat bs
= (bpstat
) p
;
2270 struct breakpoint
*b
;
2271 struct frame_info
*fr
;
2272 int within_current_scope
;
2274 b
= bs
->breakpoint_at
;
2276 if (b
->exp_valid_block
== NULL
)
2277 within_current_scope
= 1;
2280 /* There is no current frame at this moment. If we're going to have
2281 any chance of handling watchpoints on local variables, we'll need
2282 the frame chain (so we can determine if we're in scope). */
2283 reinit_frame_cache ();
2284 fr
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
2285 within_current_scope
= (fr
!= NULL
);
2286 if (within_current_scope
)
2287 /* If we end up stopping, the current frame will get selected
2288 in normal_stop. So this call to select_frame won't affect
2290 select_frame (fr
, -1);
2293 if (within_current_scope
)
2295 /* We use value_{,free_to_}mark because it could be a
2296 *long* time before we return to the command level and
2297 call free_all_values. We can't call free_all_values because
2298 we might be in the middle of evaluating a function call. */
2300 value_ptr mark
= value_mark ();
2301 value_ptr new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2302 if (!value_equal (b
->val
, new_val
))
2304 release_value (new_val
);
2305 value_free_to_mark (mark
);
2306 bs
->old_val
= b
->val
;
2308 /* We will stop here */
2309 return WP_VALUE_CHANGED
;
2313 /* Nothing changed, don't do anything. */
2314 value_free_to_mark (mark
);
2315 /* We won't stop here */
2316 return WP_VALUE_NOT_CHANGED
;
2321 /* This seems like the only logical thing to do because
2322 if we temporarily ignored the watchpoint, then when
2323 we reenter the block in which it is valid it contains
2324 garbage (in the case of a function, it may have two
2325 garbage values, one before and one after the prologue).
2326 So we can't even detect the first assignment to it and
2327 watch after that (since the garbage may or may not equal
2328 the first value assigned). */
2329 /* We print all the stop information in print_it_typical(), but
2330 in this case, by the time we call print_it_typical() this bp
2331 will be deleted already. So we have no choice but print the
2332 information here. */
2334 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2335 ui_out_field_string (uiout
, "reason", "watchpoint-scope");
2336 ui_out_text (uiout
, "\nWatchpoint ");
2337 ui_out_field_int (uiout
, "wpnum", bs
->breakpoint_at
->number
);
2338 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2339 which its expression is valid.\n");
2342 Watchpoint %d deleted because the program has left the block in\n\
2343 which its expression is valid.\n", bs
->breakpoint_at
->number
);
2346 if (b
->related_breakpoint
)
2347 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2348 b
->disposition
= del_at_next_stop
;
2354 /* Get a bpstat associated with having just stopped at address *PC
2355 and frame address CORE_ADDRESS. Update *PC to point at the
2356 breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
2357 if this is known to not be a real breakpoint (it could still be a
2358 watchpoint, though). */
2360 /* Determine whether we stopped at a breakpoint, etc, or whether we
2361 don't understand this stop. Result is a chain of bpstat's such that:
2363 if we don't understand the stop, the result is a null pointer.
2365 if we understand why we stopped, the result is not null.
2367 Each element of the chain refers to a particular breakpoint or
2368 watchpoint at which we have stopped. (We may have stopped for
2369 several reasons concurrently.)
2371 Each element of the chain has valid next, breakpoint_at,
2372 commands, FIXME??? fields. */
2375 bpstat_stop_status (CORE_ADDR
*pc
, int not_a_breakpoint
)
2377 register struct breakpoint
*b
, *temp
;
2379 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2380 int real_breakpoint
= 0;
2381 /* Root of the chain of bpstat's */
2382 struct bpstats root_bs
[1];
2383 /* Pointer to the last thing in the chain currently. */
2384 bpstat bs
= root_bs
;
2385 static char message1
[] =
2386 "Error evaluating expression for watchpoint %d\n";
2387 char message
[sizeof (message1
) + 30 /* slop */ ];
2389 /* Get the address where the breakpoint would have been. */
2390 bp_addr
= *pc
- (not_a_breakpoint
&& !SOFTWARE_SINGLE_STEP_P () ?
2391 0 : DECR_PC_AFTER_BREAK
);
2393 ALL_BREAKPOINTS_SAFE (b
, temp
)
2395 if (b
->enable
== disabled
2396 || b
->enable
== shlib_disabled
2397 || b
->enable
== call_disabled
)
2400 if (b
->type
!= bp_watchpoint
2401 && b
->type
!= bp_hardware_watchpoint
2402 && b
->type
!= bp_read_watchpoint
2403 && b
->type
!= bp_access_watchpoint
2404 && b
->type
!= bp_hardware_breakpoint
2405 && b
->type
!= bp_catch_fork
2406 && b
->type
!= bp_catch_vfork
2407 && b
->type
!= bp_catch_exec
2408 && b
->type
!= bp_catch_catch
2409 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2410 if (b
->address
!= bp_addr
|| /* address doesn't match or */
2411 (overlay_debugging
&& /* overlay doesn't match */
2412 section_is_overlay (b
->section
) &&
2413 !section_is_mapped (b
->section
)))
2416 if (b
->type
== bp_hardware_breakpoint
2417 && b
->address
!= (*pc
- DECR_PC_AFTER_HW_BREAK
))
2420 /* Is this a catchpoint of a load or unload? If so, did we
2421 get a load or unload of the specified library? If not,
2423 if ((b
->type
== bp_catch_load
)
2424 #if defined(SOLIB_HAVE_LOAD_EVENT)
2425 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2426 || ((b
->dll_pathname
!= NULL
)
2427 && (strcmp (b
->dll_pathname
,
2428 SOLIB_LOADED_LIBRARY_PATHNAME (
2429 PIDGET (inferior_ptid
)))
2435 if ((b
->type
== bp_catch_unload
)
2436 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2437 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2438 || ((b
->dll_pathname
!= NULL
)
2439 && (strcmp (b
->dll_pathname
,
2440 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2441 PIDGET (inferior_ptid
)))
2447 if ((b
->type
== bp_catch_fork
)
2448 && !target_has_forked (PIDGET (inferior_ptid
),
2449 &b
->forked_inferior_pid
))
2452 if ((b
->type
== bp_catch_vfork
)
2453 && !target_has_vforked (PIDGET (inferior_ptid
),
2454 &b
->forked_inferior_pid
))
2457 if ((b
->type
== bp_catch_exec
)
2458 && !target_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2461 if (ep_is_exception_catchpoint (b
) &&
2462 !(current_exception_event
= target_get_current_exception_event ()))
2465 /* Come here if it's a watchpoint, or if the break address matches */
2467 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2469 /* Watchpoints may change this, if not found to have triggered. */
2473 sprintf (message
, message1
, b
->number
);
2474 if (b
->type
== bp_watchpoint
||
2475 b
->type
== bp_hardware_watchpoint
)
2477 switch (catch_errors (watchpoint_check
, bs
, message
,
2481 /* We've already printed what needs to be printed. */
2482 /* Actually this is superfluous, because by the time we
2483 call print_it_typical() the wp will be already deleted,
2484 and the function will return immediately. */
2485 bs
->print_it
= print_it_done
;
2488 case WP_VALUE_CHANGED
:
2492 case WP_VALUE_NOT_CHANGED
:
2494 bs
->print_it
= print_it_noop
;
2501 /* Error from catch_errors. */
2502 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2503 if (b
->related_breakpoint
)
2504 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2505 b
->disposition
= del_at_next_stop
;
2506 /* We've already printed what needs to be printed. */
2507 bs
->print_it
= print_it_done
;
2513 else if (b
->type
== bp_read_watchpoint
||
2514 b
->type
== bp_access_watchpoint
)
2520 addr
= target_stopped_data_address ();
2523 for (v
= b
->val_chain
; v
; v
= v
->next
)
2525 if (VALUE_LVAL (v
) == lval_memory
2526 && ! VALUE_LAZY (v
))
2528 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
2530 if (v
== b
->val_chain
2531 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2532 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2536 vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
2537 /* Exact match not required. Within range is
2539 if (addr
>= vaddr
&&
2540 addr
< vaddr
+ TYPE_LENGTH (VALUE_TYPE (v
)))
2546 switch (catch_errors (watchpoint_check
, bs
, message
,
2550 /* We've already printed what needs to be printed. */
2551 bs
->print_it
= print_it_done
;
2554 case WP_VALUE_CHANGED
:
2555 if (b
->type
== bp_read_watchpoint
)
2557 /* Don't stop: read watchpoints shouldn't fire if
2558 the value has changed. This is for targets which
2559 cannot set read-only watchpoints. */
2560 bs
->print_it
= print_it_noop
;
2566 case WP_VALUE_NOT_CHANGED
:
2573 /* Error from catch_errors. */
2574 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2575 if (b
->related_breakpoint
)
2576 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2577 b
->disposition
= del_at_next_stop
;
2578 /* We've already printed what needs to be printed. */
2579 bs
->print_it
= print_it_done
;
2582 else /* found == 0 */
2584 /* This is a case where some watchpoint(s) triggered,
2585 but not at the address of this watchpoint (FOUND
2586 was left zero). So don't print anything for this
2588 bs
->print_it
= print_it_noop
;
2595 /* By definition, an encountered breakpoint is a triggered
2599 real_breakpoint
= 1;
2603 b
->frame
!= (get_current_frame ())->frame
)
2607 int value_is_zero
= 0;
2611 /* Need to select the frame, with all that implies
2612 so that the conditions will have the right context. */
2613 select_frame (get_current_frame (), 0);
2615 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2616 "Error in testing breakpoint condition:\n",
2618 /* FIXME-someday, should give breakpoint # */
2621 if (b
->cond
&& value_is_zero
)
2624 /* Don't consider this a hit. */
2627 else if (b
->ignore_count
> 0)
2630 annotate_ignore_count_change ();
2635 /* We will stop here */
2636 if (b
->disposition
== disable
)
2637 b
->enable
= disabled
;
2638 bs
->commands
= b
->commands
;
2642 (STREQ ("silent", bs
->commands
->line
) ||
2643 (xdb_commands
&& STREQ ("Q", bs
->commands
->line
))))
2645 bs
->commands
= bs
->commands
->next
;
2650 /* Print nothing for this entry if we dont stop or if we dont print. */
2651 if (bs
->stop
== 0 || bs
->print
== 0)
2652 bs
->print_it
= print_it_noop
;
2655 bs
->next
= NULL
; /* Terminate the chain */
2656 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2658 if (real_breakpoint
&& bs
)
2660 if (bs
->breakpoint_at
->type
== bp_hardware_breakpoint
)
2662 if (DECR_PC_AFTER_HW_BREAK
!= 0)
2664 *pc
= *pc
- DECR_PC_AFTER_HW_BREAK
;
2670 if (DECR_PC_AFTER_BREAK
!= 0 || must_shift_inst_regs
)
2673 #if defined (SHIFT_INST_REGS)
2675 #else /* No SHIFT_INST_REGS. */
2677 #endif /* No SHIFT_INST_REGS. */
2682 /* The value of a hardware watchpoint hasn't changed, but the
2683 intermediate memory locations we are watching may have. */
2684 if (bs
&& !bs
->stop
&&
2685 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
2686 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
2687 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
2689 remove_breakpoints ();
2690 insert_breakpoints ();
2695 /* Tell what to do about this bpstat. */
2697 bpstat_what (bpstat bs
)
2699 /* Classify each bpstat as one of the following. */
2702 /* This bpstat element has no effect on the main_action. */
2705 /* There was a watchpoint, stop but don't print. */
2708 /* There was a watchpoint, stop and print. */
2711 /* There was a breakpoint but we're not stopping. */
2714 /* There was a breakpoint, stop but don't print. */
2717 /* There was a breakpoint, stop and print. */
2720 /* We hit the longjmp breakpoint. */
2723 /* We hit the longjmp_resume breakpoint. */
2726 /* We hit the step_resume breakpoint. */
2729 /* We hit the through_sigtramp breakpoint. */
2732 /* We hit the shared library event breakpoint. */
2735 /* We caught a shared library event. */
2738 /* This is just used to count how many enums there are. */
2742 /* Here is the table which drives this routine. So that we can
2743 format it pretty, we define some abbreviations for the
2744 enum bpstat_what codes. */
2745 #define kc BPSTAT_WHAT_KEEP_CHECKING
2746 #define ss BPSTAT_WHAT_STOP_SILENT
2747 #define sn BPSTAT_WHAT_STOP_NOISY
2748 #define sgl BPSTAT_WHAT_SINGLE
2749 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2750 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2751 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2752 #define sr BPSTAT_WHAT_STEP_RESUME
2753 #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
2754 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2755 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2757 /* "Can't happen." Might want to print an error message.
2758 abort() is not out of the question, but chances are GDB is just
2759 a bit confused, not unusable. */
2760 #define err BPSTAT_WHAT_STOP_NOISY
2762 /* Given an old action and a class, come up with a new action. */
2763 /* One interesting property of this table is that wp_silent is the same
2764 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2765 after stopping, the check for whether to step over a breakpoint
2766 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2767 reference to how we stopped. We retain separate wp_silent and
2768 bp_silent codes in case we want to change that someday.
2770 Another possibly interesting property of this table is that
2771 there's a partial ordering, priority-like, of the actions. Once
2772 you've decided that some action is appropriate, you'll never go
2773 back and decide something of a lower priority is better. The
2776 kc < clr sgl shl shlr slr sn sr ss ts
2777 sgl < clrs shl shlr slr sn sr ss ts
2778 slr < err shl shlr sn sr ss ts
2779 clr < clrs err shl shlr sn sr ss ts
2780 clrs < err shl shlr sn sr ss ts
2781 ss < shl shlr sn sr ts
2788 What I think this means is that we don't need a damned table
2789 here. If you just put the rows and columns in the right order,
2790 it'd look awfully regular. We could simply walk the bpstat list
2791 and choose the highest priority action we find, with a little
2792 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
2793 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
2794 is messy anyway). */
2796 /* step_resume entries: a step resume breakpoint overrides another
2797 breakpoint of signal handling (see comment in wait_for_inferior
2798 at first IN_SIGTRAMP where we set the step_resume breakpoint). */
2799 /* We handle the through_sigtramp_breakpoint the same way; having both
2800 one of those and a step_resume_breakpoint is probably very rare (?). */
2802 static const enum bpstat_what_main_action
2803 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
2806 /* kc ss sn sgl slr clr clrs sr ts shl shlr
2809 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, ts
, shl
, shlr
},
2811 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2813 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2815 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, ts
, shl
, shlr
},
2817 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2819 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2821 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, ts
, shl
, shlr
},
2823 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, ts
, shl
, shlr
},
2825 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, ts
, shl
, shlr
},
2827 {ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, shl
, shlr
},
2829 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, shl
, ts
, shl
, shlr
},
2831 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, ts
, shlr
, shlr
}
2846 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
2847 struct bpstat_what retval
;
2849 retval
.call_dummy
= 0;
2850 for (; bs
!= NULL
; bs
= bs
->next
)
2852 enum class bs_class
= no_effect
;
2853 if (bs
->breakpoint_at
== NULL
)
2854 /* I suspect this can happen if it was a momentary breakpoint
2855 which has since been deleted. */
2857 switch (bs
->breakpoint_at
->type
)
2863 case bp_hardware_breakpoint
:
2869 bs_class
= bp_noisy
;
2871 bs_class
= bp_silent
;
2874 bs_class
= bp_nostop
;
2877 case bp_hardware_watchpoint
:
2878 case bp_read_watchpoint
:
2879 case bp_access_watchpoint
:
2883 bs_class
= wp_noisy
;
2885 bs_class
= wp_silent
;
2888 /* There was a watchpoint, but we're not stopping.
2889 This requires no further action. */
2890 bs_class
= no_effect
;
2893 bs_class
= long_jump
;
2895 case bp_longjmp_resume
:
2896 bs_class
= long_resume
;
2898 case bp_step_resume
:
2901 bs_class
= step_resume
;
2904 /* It is for the wrong frame. */
2905 bs_class
= bp_nostop
;
2907 case bp_through_sigtramp
:
2908 bs_class
= through_sig
;
2910 case bp_watchpoint_scope
:
2911 bs_class
= bp_nostop
;
2913 case bp_shlib_event
:
2914 bs_class
= shlib_event
;
2916 case bp_thread_event
:
2917 bs_class
= bp_nostop
;
2920 case bp_catch_unload
:
2921 /* Only if this catchpoint triggered should we cause the
2922 step-out-of-dld behaviour. Otherwise, we ignore this
2925 bs_class
= catch_shlib_event
;
2927 bs_class
= no_effect
;
2930 case bp_catch_vfork
:
2935 bs_class
= bp_noisy
;
2937 bs_class
= bp_silent
;
2940 /* There was a catchpoint, but we're not stopping.
2941 This requires no further action. */
2942 bs_class
= no_effect
;
2944 case bp_catch_catch
:
2945 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
2946 bs_class
= bp_nostop
;
2948 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2950 case bp_catch_throw
:
2951 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
2952 bs_class
= bp_nostop
;
2954 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2957 /* Make sure the action is stop (silent or noisy),
2958 so infrun.c pops the dummy frame. */
2959 bs_class
= bp_silent
;
2960 retval
.call_dummy
= 1;
2963 current_action
= table
[(int) bs_class
][(int) current_action
];
2965 retval
.main_action
= current_action
;
2969 /* Nonzero if we should step constantly (e.g. watchpoints on machines
2970 without hardware support). This isn't related to a specific bpstat,
2971 just to things like whether watchpoints are set. */
2974 bpstat_should_step (void)
2976 struct breakpoint
*b
;
2978 if (b
->enable
== enabled
&& b
->type
== bp_watchpoint
)
2983 /* Nonzero if there are enabled hardware watchpoints. */
2985 bpstat_have_active_hw_watchpoints (void)
2987 struct breakpoint
*b
;
2989 if ((b
->enable
== enabled
) &&
2991 ((b
->type
== bp_hardware_watchpoint
) ||
2992 (b
->type
== bp_read_watchpoint
) ||
2993 (b
->type
== bp_access_watchpoint
)))
2999 /* Given a bpstat that records zero or more triggered eventpoints, this
3000 function returns another bpstat which contains only the catchpoints
3001 on that first list, if any. */
3003 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3005 struct bpstats root_bs
[1];
3006 bpstat bs
= root_bs
;
3007 struct breakpoint
*ep
;
3010 bpstat_clear (cp_list
);
3011 root_bs
->next
= NULL
;
3013 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3015 /* Is this eventpoint a catchpoint? If not, ignore it. */
3016 ep
= ep_list
->breakpoint_at
;
3019 if ((ep
->type
!= bp_catch_load
) &&
3020 (ep
->type
!= bp_catch_unload
) &&
3021 (ep
->type
!= bp_catch_catch
) &&
3022 (ep
->type
!= bp_catch_throw
))
3023 /* pai: (temp) ADD fork/vfork here!! */
3026 /* Yes; add it to the list. */
3027 bs
= bpstat_alloc (ep
, bs
);
3032 #if defined(SOLIB_ADD)
3033 /* Also, for each triggered catchpoint, tag it with the name of
3034 the library that caused this trigger. (We copy the name now,
3035 because it's only guaranteed to be available NOW, when the
3036 catchpoint triggers. Clients who may wish to know the name
3037 later must get it from the catchpoint itself.) */
3038 if (ep
->triggered_dll_pathname
!= NULL
)
3039 xfree (ep
->triggered_dll_pathname
);
3040 if (ep
->type
== bp_catch_load
)
3041 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3042 PIDGET (inferior_ptid
));
3044 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3045 PIDGET (inferior_ptid
));
3047 dll_pathname
= NULL
;
3051 ep
->triggered_dll_pathname
= (char *)
3052 xmalloc (strlen (dll_pathname
) + 1);
3053 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3056 ep
->triggered_dll_pathname
= NULL
;
3062 /* Print B to gdb_stdout. */
3064 print_one_breakpoint (struct breakpoint
*b
,
3065 CORE_ADDR
*last_addr
)
3067 register struct command_line
*l
;
3068 register struct symbol
*sym
;
3069 struct ep_type_description
3074 static struct ep_type_description bptypes
[] =
3076 {bp_none
, "?deleted?"},
3077 {bp_breakpoint
, "breakpoint"},
3078 {bp_hardware_breakpoint
, "hw breakpoint"},
3079 {bp_until
, "until"},
3080 {bp_finish
, "finish"},
3081 {bp_watchpoint
, "watchpoint"},
3082 {bp_hardware_watchpoint
, "hw watchpoint"},
3083 {bp_read_watchpoint
, "read watchpoint"},
3084 {bp_access_watchpoint
, "acc watchpoint"},
3085 {bp_longjmp
, "longjmp"},
3086 {bp_longjmp_resume
, "longjmp resume"},
3087 {bp_step_resume
, "step resume"},
3088 {bp_through_sigtramp
, "sigtramp"},
3089 {bp_watchpoint_scope
, "watchpoint scope"},
3090 {bp_call_dummy
, "call dummy"},
3091 {bp_shlib_event
, "shlib events"},
3092 {bp_thread_event
, "thread events"},
3093 {bp_catch_load
, "catch load"},
3094 {bp_catch_unload
, "catch unload"},
3095 {bp_catch_fork
, "catch fork"},
3096 {bp_catch_vfork
, "catch vfork"},
3097 {bp_catch_exec
, "catch exec"},
3098 {bp_catch_catch
, "catch catch"},
3099 {bp_catch_throw
, "catch throw"}
3102 static char *bpdisps
[] =
3103 {"del", "dstp", "dis", "keep"};
3104 static char bpenables
[] = "nynny";
3105 char wrap_indent
[80];
3107 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3108 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3113 ui_out_list_begin (uiout
, "bkpt");
3119 ui_out_field_int (uiout
, "number", b
->number
);
3121 printf_filtered ("%-3d ", b
->number
);
3126 if (((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3127 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3128 internal_error (__FILE__
, __LINE__
,
3129 "bptypes table does not describe type #%d.",
3132 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3134 printf_filtered ("%-14s ", bptypes
[(int) b
->type
].description
);
3140 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3142 printf_filtered ("%-4s ", bpdisps
[(int) b
->disposition
]);
3148 ui_out_field_fmt (uiout
, "enabled", "%c", bpenables
[(int) b
->enable
]);
3149 ui_out_spaces (uiout
, 2);
3151 printf_filtered ("%-3c ", bpenables
[(int) b
->enable
]);
3155 strcpy (wrap_indent
, " ");
3158 if (TARGET_ADDR_BIT
<= 32)
3159 strcat (wrap_indent
, " ");
3161 strcat (wrap_indent
, " ");
3166 internal_error (__FILE__
, __LINE__
,
3167 "print_one_breakpoint: bp_none encountered\n");
3171 case bp_hardware_watchpoint
:
3172 case bp_read_watchpoint
:
3173 case bp_access_watchpoint
:
3174 /* Field 4, the address, is omitted (which makes the columns
3175 not line up too nicely with the headers, but the effect
3176 is relatively readable). */
3179 ui_out_field_skip (uiout
, "addr");
3181 print_expression (b
->exp
, stb
->stream
);
3182 ui_out_field_stream (uiout
, "what", stb
);
3185 print_expression (b
->exp
, gdb_stdout
);
3190 case bp_catch_unload
:
3191 /* Field 4, the address, is omitted (which makes the columns
3192 not line up too nicely with the headers, but the effect
3193 is relatively readable). */
3196 ui_out_field_skip (uiout
, "addr");
3198 if (b
->dll_pathname
== NULL
)
3200 ui_out_field_string (uiout
, "what", "<any library>");
3201 ui_out_spaces (uiout
, 1);
3205 ui_out_text (uiout
, "library \"");
3206 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3207 ui_out_text (uiout
, "\" ");
3211 if (b
->dll_pathname
== NULL
)
3212 printf_filtered ("<any library> ");
3214 printf_filtered ("library \"%s\" ", b
->dll_pathname
);
3219 case bp_catch_vfork
:
3220 /* Field 4, the address, is omitted (which makes the columns
3221 not line up too nicely with the headers, but the effect
3222 is relatively readable). */
3225 ui_out_field_skip (uiout
, "addr");
3227 if (b
->forked_inferior_pid
!= 0)
3229 ui_out_text (uiout
, "process ");
3230 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3231 ui_out_spaces (uiout
, 1);
3235 if (b
->forked_inferior_pid
!= 0)
3236 printf_filtered ("process %d ", b
->forked_inferior_pid
);
3241 /* Field 4, the address, is omitted (which makes the columns
3242 not line up too nicely with the headers, but the effect
3243 is relatively readable). */
3246 ui_out_field_skip (uiout
, "addr");
3248 if (b
->exec_pathname
!= NULL
)
3250 ui_out_text (uiout
, "program \"");
3251 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3252 ui_out_text (uiout
, "\" ");
3256 if (b
->exec_pathname
!= NULL
)
3257 printf_filtered ("program \"%s\" ", b
->exec_pathname
);
3261 case bp_catch_catch
:
3262 /* Field 4, the address, is omitted (which makes the columns
3263 not line up too nicely with the headers, but the effect
3264 is relatively readable). */
3267 ui_out_field_skip (uiout
, "addr");
3269 ui_out_field_string (uiout
, "what", "exception catch");
3270 ui_out_spaces (uiout
, 1);
3273 printf_filtered ("exception catch ");
3277 case bp_catch_throw
:
3278 /* Field 4, the address, is omitted (which makes the columns
3279 not line up too nicely with the headers, but the effect
3280 is relatively readable). */
3283 ui_out_field_skip (uiout
, "addr");
3285 ui_out_field_string (uiout
, "what", "exception throw");
3286 ui_out_spaces (uiout
, 1);
3289 printf_filtered ("exception throw ");
3294 case bp_hardware_breakpoint
:
3298 case bp_longjmp_resume
:
3299 case bp_step_resume
:
3300 case bp_through_sigtramp
:
3301 case bp_watchpoint_scope
:
3303 case bp_shlib_event
:
3304 case bp_thread_event
:
3309 ui_out_field_core_addr (uiout
, "addr", b
->address
);
3312 *last_addr
= b
->address
;
3315 sym
= find_pc_sect_function (b
->address
, b
->section
);
3318 ui_out_text (uiout
, "in ");
3319 ui_out_field_string (uiout
, "func",
3320 SYMBOL_SOURCE_NAME (sym
));
3321 ui_out_wrap_hint (uiout
, wrap_indent
);
3322 ui_out_text (uiout
, " at ");
3324 ui_out_field_string (uiout
, "file", b
->source_file
);
3325 ui_out_text (uiout
, ":");
3326 ui_out_field_int (uiout
, "line", b
->line_number
);
3330 print_address_symbolic (b
->address
, stb
->stream
, demangle
, "");
3331 ui_out_field_stream (uiout
, "at", stb
);
3340 if (TARGET_ADDR_BIT
<= 32)
3341 tmp
= longest_local_hex_string_custom (b
->address
3342 & (CORE_ADDR
) 0xffffffff,
3345 tmp
= longest_local_hex_string_custom (b
->address
, "016l");
3347 printf_filtered ("%s ", tmp
);
3350 *last_addr
= b
->address
;
3353 sym
= find_pc_sect_function (b
->address
, b
->section
);
3356 fputs_filtered ("in ", gdb_stdout
);
3357 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), gdb_stdout
);
3358 wrap_here (wrap_indent
);
3359 fputs_filtered (" at ", gdb_stdout
);
3361 fputs_filtered (b
->source_file
, gdb_stdout
);
3362 printf_filtered (":%d", b
->line_number
);
3365 print_address_symbolic (b
->address
, gdb_stdout
, demangle
, " ");
3370 if (b
->thread
!= -1)
3373 /* FIXME: This seems to be redundant and lost here; see the
3374 "stop only in" line a little further down. */
3375 ui_out_text (uiout
, " thread ");
3376 ui_out_field_int (uiout
, "thread", b
->thread
);
3378 printf_filtered (" thread %d", b
->thread
);
3383 ui_out_text (uiout
, "\n");
3385 printf_filtered ("\n");
3392 ui_out_text (uiout
, "\tstop only in stack frame at ");
3393 ui_out_field_core_addr (uiout
, "frame", b
->frame
);
3394 ui_out_text (uiout
, "\n");
3396 printf_filtered ("\tstop only in stack frame at ");
3397 print_address_numeric (b
->frame
, 1, gdb_stdout
);
3398 printf_filtered ("\n");
3406 ui_out_text (uiout
, "\tstop only if ");
3407 print_expression (b
->cond
, stb
->stream
);
3408 ui_out_field_stream (uiout
, "cond", stb
);
3409 ui_out_text (uiout
, "\n");
3411 printf_filtered ("\tstop only if ");
3412 print_expression (b
->cond
, gdb_stdout
);
3413 printf_filtered ("\n");
3417 if (b
->thread
!= -1)
3419 /* FIXME should make an annotation for this */
3421 ui_out_text (uiout
, "\tstop only in thread ");
3422 ui_out_field_int (uiout
, "thread", b
->thread
);
3423 ui_out_text (uiout
, "\n");
3425 printf_filtered ("\tstop only in thread %d\n", b
->thread
);
3429 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3431 /* FIXME should make an annotation for this */
3433 if (ep_is_catchpoint (b
))
3434 ui_out_text (uiout
, "\tcatchpoint");
3436 ui_out_text (uiout
, "\tbreakpoint");
3437 ui_out_text (uiout
, " already hit ");
3438 ui_out_field_int (uiout
, "times", b
->hit_count
);
3439 if (b
->hit_count
== 1)
3440 ui_out_text (uiout
, " time\n");
3442 ui_out_text (uiout
, " times\n");
3444 if (ep_is_catchpoint (b
))
3445 printf_filtered ("\tcatchpoint");
3447 printf_filtered ("\tbreakpoint");
3448 printf_filtered (" already hit %d time%s\n",
3449 b
->hit_count
, (b
->hit_count
== 1 ? "" : "s"));
3454 /* Output the count also if it is zero, but only if this is
3455 mi. FIXME: Should have a better test for this. */
3456 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
3457 if (show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3458 ui_out_field_int (uiout
, "times", b
->hit_count
);
3461 if (b
->ignore_count
)
3465 ui_out_text (uiout
, "\tignore next ");
3466 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3467 ui_out_text (uiout
, " hits\n");
3469 printf_filtered ("\tignore next %d hits\n", b
->ignore_count
);
3473 if ((l
= b
->commands
))
3477 ui_out_list_begin (uiout
, "script");
3478 print_command_lines (uiout
, l
, 4);
3479 ui_out_list_end (uiout
);
3483 print_command_line (l
, 4, gdb_stdout
);
3489 ui_out_list_end (uiout
);
3490 do_cleanups (old_chain
);
3494 struct captured_breakpoint_query_args
3500 do_captured_breakpoint_query (void *data
)
3502 struct captured_breakpoint_query_args
*args
= data
;
3503 register struct breakpoint
*b
;
3504 CORE_ADDR dummy_addr
= 0;
3507 if (args
->bnum
== b
->number
)
3509 print_one_breakpoint (b
, &dummy_addr
);
3517 gdb_breakpoint_query (/* output object, */ int bnum
)
3519 struct captured_breakpoint_query_args args
;
3521 /* For the moment we don't trust print_one_breakpoint() to not throw
3523 return catch_errors (do_captured_breakpoint_query
, &args
,
3524 NULL
, RETURN_MASK_ALL
);
3527 /* Print information on breakpoint number BNUM, or -1 if all.
3528 If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
3529 is nonzero, process only watchpoints. */
3532 breakpoint_1 (int bnum
, int allflag
)
3534 register struct breakpoint
*b
;
3535 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3536 int found_a_breakpoint
= 0;
3540 ui_out_table_begin (uiout
, 6, "BreakpointTable");
3542 ui_out_table_begin (uiout
, 5, "BreakpointTable");
3547 || bnum
== b
->number
)
3549 /* We only print out user settable breakpoints unless the
3552 && b
->type
!= bp_breakpoint
3553 && b
->type
!= bp_catch_load
3554 && b
->type
!= bp_catch_unload
3555 && b
->type
!= bp_catch_fork
3556 && b
->type
!= bp_catch_vfork
3557 && b
->type
!= bp_catch_exec
3558 && b
->type
!= bp_catch_catch
3559 && b
->type
!= bp_catch_throw
3560 && b
->type
!= bp_hardware_breakpoint
3561 && b
->type
!= bp_watchpoint
3562 && b
->type
!= bp_read_watchpoint
3563 && b
->type
!= bp_access_watchpoint
3564 && b
->type
!= bp_hardware_watchpoint
)
3567 if (!found_a_breakpoint
++)
3569 annotate_breakpoints_headers ();
3572 ui_out_table_header (uiout
, 3, ui_left
, "Num"); /* 1 */
3574 ui_out_table_header (uiout
, 14, ui_left
, "Type"); /* 2 */
3576 ui_out_table_header (uiout
, 4, ui_left
, "Disp"); /* 3 */
3578 ui_out_table_header (uiout
, 3, ui_left
, "Enb"); /* 4 */
3582 if (TARGET_ADDR_BIT
<= 32)
3583 ui_out_table_header (uiout
, 10, ui_left
, "Address"); /* 5 */
3585 ui_out_table_header (uiout
, 18, ui_left
, "Address"); /* 5 */
3588 ui_out_table_header (uiout
, 40, ui_noalign
, "What"); /* 6 */
3589 ui_out_table_body (uiout
);
3592 printf_filtered ("Num ");
3594 printf_filtered ("Type ");
3596 printf_filtered ("Disp ");
3598 printf_filtered ("Enb ");
3602 if (TARGET_ADDR_BIT
<= 32)
3603 printf_filtered ("Address ");
3605 printf_filtered ("Address ");
3608 printf_filtered ("What\n");
3610 annotate_breakpoints_table ();
3613 print_one_breakpoint (b
, &last_addr
);
3616 if (!found_a_breakpoint
)
3620 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3622 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3626 printf_filtered ("No breakpoints or watchpoints.\n");
3628 printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum
);
3633 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3634 that a comparison of an unsigned with -1 is always false. */
3635 if (last_addr
!= (CORE_ADDR
) -1)
3636 set_next_address (last_addr
);
3640 ui_out_table_end (uiout
);
3642 /* FIXME? Should this be moved up so that it is only called when
3643 there have been breakpoints? */
3644 annotate_breakpoints_table_end ();
3649 breakpoints_info (char *bnum_exp
, int from_tty
)
3654 bnum
= parse_and_eval_long (bnum_exp
);
3656 breakpoint_1 (bnum
, 0);
3661 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3666 bnum
= parse_and_eval_long (bnum_exp
);
3668 breakpoint_1 (bnum
, 1);
3671 /* Print a message describing any breakpoints set at PC. */
3674 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
)
3676 register int others
= 0;
3677 register struct breakpoint
*b
;
3680 if (b
->address
== pc
)
3681 if (overlay_debugging
== 0 ||
3682 b
->section
== section
)
3686 printf_filtered ("Note: breakpoint%s ", (others
> 1) ? "s" : "");
3688 if (b
->address
== pc
)
3689 if (overlay_debugging
== 0 ||
3690 b
->section
== section
)
3693 printf_filtered ("%d%s%s ",
3695 ((b
->enable
== disabled
||
3696 b
->enable
== shlib_disabled
||
3697 b
->enable
== call_disabled
) ? " (disabled)"
3698 : b
->enable
== permanent
? " (permanent)"
3701 : ((others
== 1) ? " and" : ""));
3703 printf_filtered ("also set at pc ");
3704 print_address_numeric (pc
, 1, gdb_stdout
);
3705 printf_filtered (".\n");
3709 /* Set the default place to put a breakpoint
3710 for the `break' command with no arguments. */
3713 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3716 default_breakpoint_valid
= valid
;
3717 default_breakpoint_address
= addr
;
3718 default_breakpoint_symtab
= symtab
;
3719 default_breakpoint_line
= line
;
3722 /* Rescan breakpoints at address ADDRESS,
3723 marking the first one as "first" and any others as "duplicates".
3724 This is so that the bpt instruction is only inserted once.
3725 If we have a permanent breakpoint at ADDRESS, make that one
3726 the official one, and the rest as duplicates. */
3729 check_duplicates (CORE_ADDR address
, asection
*section
)
3731 register struct breakpoint
*b
;
3732 register int count
= 0;
3733 struct breakpoint
*perm_bp
= 0;
3735 if (address
== 0) /* Watchpoints are uninteresting */
3739 if (b
->enable
!= disabled
3740 && b
->enable
!= shlib_disabled
3741 && b
->enable
!= call_disabled
3742 && b
->address
== address
3743 && (overlay_debugging
== 0 || b
->section
== section
))
3745 /* Have we found a permanent breakpoint? */
3746 if (b
->enable
== permanent
)
3753 b
->duplicate
= count
> 1;
3756 /* If we found a permanent breakpoint at this address, go over the
3757 list again and declare all the other breakpoints there to be the
3761 perm_bp
->duplicate
= 0;
3763 /* Permanent breakpoint should always be inserted. */
3764 if (! perm_bp
->inserted
)
3765 internal_error (__FILE__
, __LINE__
,
3766 "allegedly permanent breakpoint is not "
3767 "actually inserted");
3773 internal_error (__FILE__
, __LINE__
,
3774 "another breakpoint was inserted on top of "
3775 "a permanent breakpoint");
3777 if (b
->enable
!= disabled
3778 && b
->enable
!= shlib_disabled
3779 && b
->enable
!= call_disabled
3780 && b
->address
== address
3781 && (overlay_debugging
== 0 || b
->section
== section
))
3787 /* Low level routine to set a breakpoint.
3788 Takes as args the three things that every breakpoint must have.
3789 Returns the breakpoint object so caller can set other things.
3790 Does not set the breakpoint number!
3791 Does not print anything.
3793 ==> This routine should not be called if there is a chance of later
3794 error(); otherwise it leaves a bogus breakpoint on the chain. Validate
3795 your arguments BEFORE calling this routine! */
3798 set_raw_breakpoint (struct symtab_and_line sal
)
3800 register struct breakpoint
*b
, *b1
;
3802 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
3803 memset (b
, 0, sizeof (*b
));
3804 b
->address
= sal
.pc
;
3805 if (sal
.symtab
== NULL
)
3806 b
->source_file
= NULL
;
3808 b
->source_file
= savestring (sal
.symtab
->filename
,
3809 strlen (sal
.symtab
->filename
));
3810 b
->section
= sal
.section
;
3811 b
->language
= current_language
->la_language
;
3812 b
->input_radix
= input_radix
;
3814 b
->line_number
= sal
.line
;
3815 b
->enable
= enabled
;
3818 b
->ignore_count
= 0;
3821 b
->dll_pathname
= NULL
;
3822 b
->triggered_dll_pathname
= NULL
;
3823 b
->forked_inferior_pid
= 0;
3824 b
->exec_pathname
= NULL
;
3826 /* Add this breakpoint to the end of the chain
3827 so that a list of breakpoints will come out in order
3828 of increasing numbers. */
3830 b1
= breakpoint_chain
;
3832 breakpoint_chain
= b
;
3840 check_duplicates (sal
.pc
, sal
.section
);
3841 breakpoints_changed ();
3847 /* Note that the breakpoint object B describes a permanent breakpoint
3848 instruction, hard-wired into the inferior's code. */
3850 make_breakpoint_permanent (struct breakpoint
*b
)
3852 b
->enable
= permanent
;
3854 /* By definition, permanent breakpoints are already present in the code. */
3858 #ifdef GET_LONGJMP_TARGET
3861 create_longjmp_breakpoint (char *func_name
)
3863 struct symtab_and_line sal
;
3864 struct breakpoint
*b
;
3866 INIT_SAL (&sal
); /* initialize to zeroes */
3867 if (func_name
!= NULL
)
3869 struct minimal_symbol
*m
;
3871 m
= lookup_minimal_symbol_text (func_name
, NULL
,
3872 (struct objfile
*) NULL
);
3874 sal
.pc
= SYMBOL_VALUE_ADDRESS (m
);
3878 sal
.section
= find_pc_overlay (sal
.pc
);
3879 b
= set_raw_breakpoint (sal
);
3883 b
->type
= func_name
!= NULL
? bp_longjmp
: bp_longjmp_resume
;
3884 b
->disposition
= donttouch
;
3885 b
->enable
= disabled
;
3888 b
->addr_string
= xstrdup (func_name
);
3889 b
->number
= internal_breakpoint_number
--;
3892 #endif /* #ifdef GET_LONGJMP_TARGET */
3894 /* Call this routine when stepping and nexting to enable a breakpoint
3895 if we do a longjmp(). When we hit that breakpoint, call
3896 set_longjmp_resume_breakpoint() to figure out where we are going. */
3899 enable_longjmp_breakpoint (void)
3901 register struct breakpoint
*b
;
3904 if (b
->type
== bp_longjmp
)
3906 b
->enable
= enabled
;
3907 check_duplicates (b
->address
, b
->section
);
3912 disable_longjmp_breakpoint (void)
3914 register struct breakpoint
*b
;
3917 if (b
->type
== bp_longjmp
3918 || b
->type
== bp_longjmp_resume
)
3920 b
->enable
= disabled
;
3921 check_duplicates (b
->address
, b
->section
);
3926 create_thread_event_breakpoint (CORE_ADDR address
)
3928 struct breakpoint
*b
;
3929 struct symtab_and_line sal
;
3930 char addr_string
[80]; /* Surely an addr can't be longer than that. */
3932 INIT_SAL (&sal
); /* initialize to zeroes */
3934 sal
.section
= find_pc_overlay (sal
.pc
);
3935 if ((b
= set_raw_breakpoint (sal
)) == NULL
)
3938 b
->number
= internal_breakpoint_number
--;
3939 b
->disposition
= donttouch
;
3940 b
->type
= bp_thread_event
; /* XXX: do we need a new type?
3942 b
->enable
= enabled
;
3943 /* addr_string has to be used or breakpoint_re_set will delete me. */
3944 sprintf (addr_string
, "*0x%s", paddr (b
->address
));
3945 b
->addr_string
= xstrdup (addr_string
);
3951 remove_thread_event_breakpoints (void)
3953 struct breakpoint
*b
, *temp
;
3955 ALL_BREAKPOINTS_SAFE (b
, temp
)
3956 if (b
->type
== bp_thread_event
)
3957 delete_breakpoint (b
);
3962 remove_solib_event_breakpoints (void)
3964 register struct breakpoint
*b
, *temp
;
3966 ALL_BREAKPOINTS_SAFE (b
, temp
)
3967 if (b
->type
== bp_shlib_event
)
3968 delete_breakpoint (b
);
3972 create_solib_event_breakpoint (CORE_ADDR address
)
3974 struct breakpoint
*b
;
3975 struct symtab_and_line sal
;
3977 INIT_SAL (&sal
); /* initialize to zeroes */
3979 sal
.section
= find_pc_overlay (sal
.pc
);
3980 b
= set_raw_breakpoint (sal
);
3981 b
->number
= internal_breakpoint_number
--;
3982 b
->disposition
= donttouch
;
3983 b
->type
= bp_shlib_event
;
3988 /* Disable any breakpoints that are on code in shared libraries. Only
3989 apply to enabled breakpoints, disabled ones can just stay disabled. */
3992 disable_breakpoints_in_shlibs (int silent
)
3994 struct breakpoint
*b
;
3995 int disabled_shlib_breaks
= 0;
3997 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
4000 #if defined (PC_SOLIB)
4001 if (((b
->type
== bp_breakpoint
) ||
4002 (b
->type
== bp_hardware_breakpoint
)) &&
4003 b
->enable
== enabled
&&
4005 PC_SOLIB (b
->address
))
4007 b
->enable
= shlib_disabled
;
4010 if (!disabled_shlib_breaks
)
4012 target_terminal_ours_for_output ();
4013 warning ("Temporarily disabling shared library breakpoints:");
4015 disabled_shlib_breaks
= 1;
4016 warning ("breakpoint #%d ", b
->number
);
4023 /* Try to reenable any breakpoints in shared libraries. */
4025 re_enable_breakpoints_in_shlibs (void)
4027 struct breakpoint
*b
;
4030 if (b
->enable
== shlib_disabled
)
4034 /* Do not reenable the breakpoint if the shared library
4035 is still not mapped in. */
4036 if (target_read_memory (b
->address
, buf
, 1) == 0)
4037 b
->enable
= enabled
;
4044 solib_load_unload_1 (char *hookname
, int tempflag
, char *dll_pathname
,
4045 char *cond_string
, enum bptype bp_kind
)
4047 struct breakpoint
*b
;
4048 struct symtabs_and_lines sals
;
4049 struct cleanup
*old_chain
;
4050 struct cleanup
*canonical_strings_chain
= NULL
;
4051 char *addr_start
= hookname
;
4052 char *addr_end
= NULL
;
4053 char **canonical
= (char **) NULL
;
4054 int thread
= -1; /* All threads. */
4056 /* Set a breakpoint on the specified hook. */
4057 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
, 0, &canonical
);
4058 addr_end
= hookname
;
4060 if (sals
.nelts
== 0)
4062 warning ("Unable to set a breakpoint on dynamic linker callback.");
4063 warning ("Suggest linking with /opt/langtools/lib/end.o.");
4064 warning ("GDB will be unable to track shl_load/shl_unload calls");
4067 if (sals
.nelts
!= 1)
4069 warning ("Unable to set unique breakpoint on dynamic linker callback.");
4070 warning ("GDB will be unable to track shl_load/shl_unload calls");
4074 /* Make sure that all storage allocated in decode_line_1 gets freed
4075 in case the following errors out. */
4076 old_chain
= make_cleanup (xfree
, sals
.sals
);
4077 if (canonical
!= (char **) NULL
)
4079 make_cleanup (xfree
, canonical
);
4080 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4081 if (canonical
[0] != NULL
)
4082 make_cleanup (xfree
, canonical
[0]);
4085 resolve_sal_pc (&sals
.sals
[0]);
4087 /* Remove the canonical strings from the cleanup, they are needed below. */
4088 if (canonical
!= (char **) NULL
)
4089 discard_cleanups (canonical_strings_chain
);
4091 b
= set_raw_breakpoint (sals
.sals
[0]);
4092 set_breakpoint_count (breakpoint_count
+ 1);
4093 b
->number
= breakpoint_count
;
4095 b
->cond_string
= (cond_string
== NULL
) ?
4096 NULL
: savestring (cond_string
, strlen (cond_string
));
4099 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
4100 b
->addr_string
= canonical
[0];
4101 else if (addr_start
)
4102 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4104 b
->enable
= enabled
;
4105 b
->disposition
= tempflag
? del
: donttouch
;
4107 if (dll_pathname
== NULL
)
4108 b
->dll_pathname
= NULL
;
4111 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
4112 strcpy (b
->dll_pathname
, dll_pathname
);
4117 do_cleanups (old_chain
);
4121 create_solib_load_event_breakpoint (char *hookname
, int tempflag
,
4122 char *dll_pathname
, char *cond_string
)
4124 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4125 cond_string
, bp_catch_load
);
4129 create_solib_unload_event_breakpoint (char *hookname
, int tempflag
,
4130 char *dll_pathname
, char *cond_string
)
4132 solib_load_unload_1 (hookname
,tempflag
, dll_pathname
,
4133 cond_string
, bp_catch_unload
);
4137 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4138 enum bptype bp_kind
)
4140 struct symtab_and_line sal
;
4141 struct breakpoint
*b
;
4142 int thread
= -1; /* All threads. */
4149 b
= set_raw_breakpoint (sal
);
4150 set_breakpoint_count (breakpoint_count
+ 1);
4151 b
->number
= breakpoint_count
;
4153 b
->cond_string
= (cond_string
== NULL
) ?
4154 NULL
: savestring (cond_string
, strlen (cond_string
));
4156 b
->addr_string
= NULL
;
4157 b
->enable
= enabled
;
4158 b
->disposition
= tempflag
? del
: donttouch
;
4159 b
->forked_inferior_pid
= 0;
4167 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4169 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4173 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4175 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4179 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4181 struct symtab_and_line sal
;
4182 struct breakpoint
*b
;
4183 int thread
= -1; /* All threads. */
4190 b
= set_raw_breakpoint (sal
);
4191 set_breakpoint_count (breakpoint_count
+ 1);
4192 b
->number
= breakpoint_count
;
4194 b
->cond_string
= (cond_string
== NULL
) ?
4195 NULL
: savestring (cond_string
, strlen (cond_string
));
4197 b
->addr_string
= NULL
;
4198 b
->enable
= enabled
;
4199 b
->disposition
= tempflag
? del
: donttouch
;
4201 b
->type
= bp_catch_exec
;
4207 hw_breakpoint_used_count (void)
4209 register struct breakpoint
*b
;
4214 if (b
->type
== bp_hardware_breakpoint
&& b
->enable
== enabled
)
4222 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4224 register struct breakpoint
*b
;
4227 *other_type_used
= 0;
4230 if (b
->enable
== enabled
)
4232 if (b
->type
== type
)
4234 else if ((b
->type
== bp_hardware_watchpoint
||
4235 b
->type
== bp_read_watchpoint
||
4236 b
->type
== bp_access_watchpoint
)
4237 && b
->enable
== enabled
)
4238 *other_type_used
= 1;
4244 /* Call this after hitting the longjmp() breakpoint. Use this to set
4245 a new breakpoint at the target of the jmp_buf.
4247 FIXME - This ought to be done by setting a temporary breakpoint
4248 that gets deleted automatically... */
4251 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_info
*frame
)
4253 register struct breakpoint
*b
;
4256 if (b
->type
== bp_longjmp_resume
)
4259 b
->enable
= enabled
;
4261 b
->frame
= frame
->frame
;
4264 check_duplicates (b
->address
, b
->section
);
4270 disable_watchpoints_before_interactive_call_start (void)
4272 struct breakpoint
*b
;
4276 if (((b
->type
== bp_watchpoint
)
4277 || (b
->type
== bp_hardware_watchpoint
)
4278 || (b
->type
== bp_read_watchpoint
)
4279 || (b
->type
== bp_access_watchpoint
)
4280 || ep_is_exception_catchpoint (b
))
4281 && (b
->enable
== enabled
))
4283 b
->enable
= call_disabled
;
4284 check_duplicates (b
->address
, b
->section
);
4290 enable_watchpoints_after_interactive_call_stop (void)
4292 struct breakpoint
*b
;
4296 if (((b
->type
== bp_watchpoint
)
4297 || (b
->type
== bp_hardware_watchpoint
)
4298 || (b
->type
== bp_read_watchpoint
)
4299 || (b
->type
== bp_access_watchpoint
)
4300 || ep_is_exception_catchpoint (b
))
4301 && (b
->enable
== call_disabled
))
4303 b
->enable
= enabled
;
4304 check_duplicates (b
->address
, b
->section
);
4310 /* Set a breakpoint that will evaporate an end of command
4311 at address specified by SAL.
4312 Restrict it to frame FRAME if FRAME is nonzero. */
4315 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_info
*frame
,
4318 register struct breakpoint
*b
;
4319 b
= set_raw_breakpoint (sal
);
4321 b
->enable
= enabled
;
4322 b
->disposition
= donttouch
;
4323 b
->frame
= (frame
? frame
->frame
: 0);
4325 /* If we're debugging a multi-threaded program, then we
4326 want momentary breakpoints to be active in only a
4327 single thread of control. */
4328 if (in_thread_list (inferior_ptid
))
4329 b
->thread
= pid_to_thread_id (inferior_ptid
);
4335 /* Tell the user we have just set a breakpoint B. */
4338 mention (struct breakpoint
*b
)
4342 struct cleanup
*old_chain
;
4343 struct ui_stream
*stb
;
4345 stb
= ui_out_stream_new (uiout
);
4346 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4349 /* FIXME: This is misplaced; mention() is called by things (like hitting a
4350 watchpoint) other than breakpoint creation. It should be possible to
4351 clean this up and at the same time replace the random calls to
4352 breakpoint_changed with this hook, as has already been done for
4353 delete_breakpoint_hook and so on. */
4354 if (create_breakpoint_hook
)
4355 create_breakpoint_hook (b
);
4356 breakpoint_create_event (b
->number
);
4361 printf_filtered ("(apparently deleted?) Eventpoint %d: ", b
->number
);
4365 ui_out_text (uiout
, "Watchpoint ");
4366 ui_out_list_begin (uiout
, "wpt");
4367 ui_out_field_int (uiout
, "number", b
->number
);
4368 ui_out_text (uiout
, ": ");
4369 print_expression (b
->exp
, stb
->stream
);
4370 ui_out_field_stream (uiout
, "exp", stb
);
4371 ui_out_list_end (uiout
);
4373 case bp_hardware_watchpoint
:
4374 ui_out_text (uiout
, "Hardware watchpoint ");
4375 ui_out_list_begin (uiout
, "wpt");
4376 ui_out_field_int (uiout
, "number", b
->number
);
4377 ui_out_text (uiout
, ": ");
4378 print_expression (b
->exp
, stb
->stream
);
4379 ui_out_field_stream (uiout
, "exp", stb
);
4380 ui_out_list_end (uiout
);
4384 printf_filtered ("Watchpoint %d: ", b
->number
);
4385 print_expression (b
->exp
, gdb_stdout
);
4387 case bp_hardware_watchpoint
:
4388 printf_filtered ("Hardware watchpoint %d: ", b
->number
);
4389 print_expression (b
->exp
, gdb_stdout
);
4393 case bp_read_watchpoint
:
4394 ui_out_text (uiout
, "Hardware read watchpoint ");
4395 ui_out_list_begin (uiout
, "hw-rwpt");
4396 ui_out_field_int (uiout
, "number", b
->number
);
4397 ui_out_text (uiout
, ": ");
4398 print_expression (b
->exp
, stb
->stream
);
4399 ui_out_field_stream (uiout
, "exp", stb
);
4400 ui_out_list_end (uiout
);
4402 case bp_access_watchpoint
:
4403 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4404 ui_out_list_begin (uiout
, "hw-awpt");
4405 ui_out_field_int (uiout
, "number", b
->number
);
4406 ui_out_text (uiout
, ": ");
4407 print_expression (b
->exp
, stb
->stream
);
4408 ui_out_field_stream (uiout
, "exp", stb
);
4409 ui_out_list_end (uiout
);
4412 case bp_read_watchpoint
:
4413 printf_filtered ("Hardware read watchpoint %d: ", b
->number
);
4414 print_expression (b
->exp
, gdb_stdout
);
4416 case bp_access_watchpoint
:
4417 printf_filtered ("Hardware access (read/write) watchpoint %d: ",
4419 print_expression (b
->exp
, gdb_stdout
);
4424 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4430 printf_filtered ("Breakpoint %d", b
->number
);
4433 case bp_hardware_breakpoint
:
4435 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4441 printf_filtered ("Hardware assisted breakpoint %d", b
->number
);
4445 case bp_catch_unload
:
4446 printf_filtered ("Catchpoint %d (%s %s)",
4448 (b
->type
== bp_catch_load
) ? "load" : "unload",
4449 (b
->dll_pathname
!= NULL
) ?
4450 b
->dll_pathname
: "<any library>");
4453 case bp_catch_vfork
:
4454 printf_filtered ("Catchpoint %d (%s)",
4456 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4459 printf_filtered ("Catchpoint %d (exec)",
4462 case bp_catch_catch
:
4463 case bp_catch_throw
:
4464 printf_filtered ("Catchpoint %d (%s)",
4466 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
4472 case bp_longjmp_resume
:
4473 case bp_step_resume
:
4474 case bp_through_sigtramp
:
4476 case bp_watchpoint_scope
:
4477 case bp_shlib_event
:
4478 case bp_thread_event
:
4483 if (addressprint
|| b
->source_file
== NULL
)
4485 printf_filtered (" at ");
4486 print_address_numeric (b
->address
, 1, gdb_stdout
);
4489 printf_filtered (": file %s, line %d.",
4490 b
->source_file
, b
->line_number
);
4491 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, b
, 1));
4492 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
4495 do_cleanups (old_chain
);
4498 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4501 printf_filtered ("\n");
4505 /* Add SALS.nelts breakpoints to the breakpoint table. For each
4506 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
4507 COND[i] and COND_STRING[i] values.
4509 NOTE: If the function succeeds, the caller is expected to cleanup
4510 the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
4511 array contents). If the function fails (error() is called), the
4512 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
4513 COND and SALS arrays and each of those arrays contents. */
4516 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
4517 struct expression
**cond
, char **cond_string
,
4518 enum bptype type
, enum bpdisp disposition
,
4519 int thread
, int ignore_count
, int from_tty
)
4521 if (type
== bp_hardware_breakpoint
)
4523 int i
= hw_breakpoint_used_count ();
4524 int target_resources_ok
=
4525 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4527 if (target_resources_ok
== 0)
4528 error ("No hardware breakpoint support in the target.");
4529 else if (target_resources_ok
< 0)
4530 error ("Hardware breakpoints used exceeds limit.");
4533 /* Now set all the breakpoints. */
4536 for (i
= 0; i
< sals
.nelts
; i
++)
4538 struct breakpoint
*b
;
4539 struct symtab_and_line sal
= sals
.sals
[i
];
4542 describe_other_breakpoints (sal
.pc
, sal
.section
);
4544 b
= set_raw_breakpoint (sal
);
4545 set_breakpoint_count (breakpoint_count
+ 1);
4546 b
->number
= breakpoint_count
;
4550 b
->addr_string
= addr_string
[i
];
4551 b
->cond_string
= cond_string
[i
];
4552 b
->ignore_count
= ignore_count
;
4553 b
->enable
= enabled
;
4554 b
->disposition
= disposition
;
4560 /* Parse ARG which is assumed to be a SAL specification possibly
4561 followed by conditionals. On return, SALS contains an array of SAL
4562 addresses found. ADDR_STRING contains a vector of (canonical)
4563 address strings. ARG points to the end of the SAL. */
4566 parse_breakpoint_sals (char **address
,
4567 struct symtabs_and_lines
*sals
,
4568 char ***addr_string
)
4570 char *addr_start
= *address
;
4571 *addr_string
= NULL
;
4572 /* If no arg given, or if first arg is 'if ', use the default
4574 if ((*address
) == NULL
4575 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
4577 if (default_breakpoint_valid
)
4579 struct symtab_and_line sal
;
4580 INIT_SAL (&sal
); /* initialize to zeroes */
4581 sals
->sals
= (struct symtab_and_line
*)
4582 xmalloc (sizeof (struct symtab_and_line
));
4583 sal
.pc
= default_breakpoint_address
;
4584 sal
.line
= default_breakpoint_line
;
4585 sal
.symtab
= default_breakpoint_symtab
;
4586 sal
.section
= find_pc_overlay (sal
.pc
);
4587 sals
->sals
[0] = sal
;
4591 error ("No default breakpoint address now.");
4595 /* Force almost all breakpoints to be in terms of the
4596 current_source_symtab (which is decode_line_1's default). This
4597 should produce the results we want almost all of the time while
4598 leaving default_breakpoint_* alone. */
4599 if (default_breakpoint_valid
4600 && (!current_source_symtab
4601 || (strchr ("+-", (*address
)[0]) != NULL
)))
4602 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
4603 default_breakpoint_line
, addr_string
);
4605 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0, addr_string
);
4607 /* For any SAL that didn't have a canonical string, fill one in. */
4608 if (sals
->nelts
> 0 && *addr_string
== NULL
)
4609 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
4610 if (addr_start
!= (*address
))
4613 for (i
= 0; i
< sals
->nelts
; i
++)
4615 /* Add the string if not present. */
4616 if ((*addr_string
)[i
] == NULL
)
4617 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
4623 /* Convert each SAL into a real PC. Verify that the PC can be
4624 inserted as a breakpoint. If it can't throw an error. */
4627 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
4631 for (i
= 0; i
< sals
->nelts
; i
++)
4633 resolve_sal_pc (&sals
->sals
[i
]);
4635 /* It's possible for the PC to be nonzero, but still an illegal
4636 value on some targets.
4638 For example, on HP-UX if you start gdb, and before running the
4639 inferior you try to set a breakpoint on a shared library function
4640 "foo" where the inferior doesn't call "foo" directly but does
4641 pass its address to another function call, then we do find a
4642 minimal symbol for the "foo", but it's address is invalid.
4643 (Appears to be an index into a table that the loader sets up
4644 when the inferior is run.)
4646 Give the target a chance to bless sals.sals[i].pc before we
4647 try to make a breakpoint for it. */
4648 if (PC_REQUIRES_RUN_BEFORE_USE (sals
->sals
[i
].pc
))
4650 if (address
== NULL
)
4651 error ("Cannot break without a running program.");
4653 error ("Cannot break on %s without a running program.",
4659 /* Set a breakpoint according to ARG (function, linenum or *address)
4660 flag: first bit : 0 non-temporary, 1 temporary.
4661 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
4664 break_command_1 (char *arg
, int flag
, int from_tty
)
4666 int tempflag
, hardwareflag
;
4667 struct symtabs_and_lines sals
;
4668 register struct expression
**cond
= 0;
4669 /* Pointers in arg to the start, and one past the end, of the
4671 char **cond_string
= (char **) NULL
;
4672 char *addr_start
= arg
;
4674 struct cleanup
*old_chain
;
4675 struct cleanup
*breakpoint_chain
= NULL
;
4678 int ignore_count
= 0;
4680 hardwareflag
= flag
& BP_HARDWAREFLAG
;
4681 tempflag
= flag
& BP_TEMPFLAG
;
4686 parse_breakpoint_sals (&arg
, &sals
, &addr_string
);
4691 /* Create a chain of things that always need to be cleaned up. */
4692 old_chain
= make_cleanup (null_cleanup
, 0);
4694 /* Make sure that all storage allocated to SALS gets freed. */
4695 make_cleanup (xfree
, sals
.sals
);
4697 /* Cleanup the addr_string array but not its contents. */
4698 make_cleanup (xfree
, addr_string
);
4700 /* Allocate space for all the cond expressions. */
4701 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4702 make_cleanup (xfree
, cond
);
4704 /* Allocate space for all the cond strings. */
4705 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4706 make_cleanup (xfree
, cond_string
);
4708 /* ----------------------------- SNIP -----------------------------
4709 Anything added to the cleanup chain beyond this point is assumed
4710 to be part of a breakpoint. If the breakpoint create succeeds
4711 then the memory is not reclaimed. */
4712 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4714 /* Mark the contents of the addr_string for cleanup. These go on
4715 the breakpoint_chain and only occure if the breakpoint create
4717 for (i
= 0; i
< sals
.nelts
; i
++)
4719 if (addr_string
[i
] != NULL
)
4720 make_cleanup (xfree
, addr_string
[i
]);
4723 /* Resolve all line numbers to PC's and verify that the addresses
4724 are ok for the target. */
4725 breakpoint_sals_to_pc (&sals
, addr_start
);
4727 /* Verify that condition can be parsed, before setting any
4728 breakpoints. Allocate a separate condition expression for each
4730 thread
= -1; /* No specific thread yet */
4731 for (i
= 0; i
< sals
.nelts
; i
++)
4738 char *cond_start
= NULL
;
4739 char *cond_end
= NULL
;
4740 while (*tok
== ' ' || *tok
== '\t')
4745 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
4748 toklen
= end_tok
- tok
;
4750 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
4752 tok
= cond_start
= end_tok
+ 1;
4753 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4754 make_cleanup (xfree
, cond
[i
]);
4756 cond_string
[i
] = savestring (cond_start
, cond_end
- cond_start
);
4757 make_cleanup (xfree
, cond_string
[i
]);
4759 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
4765 thread
= strtol (tok
, &tok
, 0);
4767 error ("Junk after thread keyword.");
4768 if (!valid_thread_id (thread
))
4769 error ("Unknown thread %d\n", thread
);
4772 error ("Junk at end of arguments.");
4776 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4777 hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4778 tempflag
? del
: donttouch
,
4779 thread
, ignore_count
, from_tty
);
4783 warning ("Multiple breakpoints were set.");
4784 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
4786 /* That's it. Discard the cleanups for data inserted into the
4788 discard_cleanups (breakpoint_chain
);
4789 /* But cleanup everything else. */
4790 do_cleanups (old_chain
);
4793 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
4794 linenum or *address) with COND and IGNORE_COUNT. */
4796 struct captured_breakpoint_args
4807 do_captured_breakpoint (void *data
)
4809 struct captured_breakpoint_args
*args
= data
;
4810 struct symtabs_and_lines sals
;
4811 register struct expression
**cond
;
4812 struct cleanup
*old_chain
;
4813 struct cleanup
*breakpoint_chain
= NULL
;
4820 /* Parse the source and lines spec. Delay check that the expression
4821 didn't contain trailing garbage until after cleanups are in
4825 address_end
= args
->address
;
4827 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
);
4832 /* Create a chain of things at always need to be cleaned up. */
4833 old_chain
= make_cleanup (null_cleanup
, 0);
4835 /* Always have a addr_string array, even if it is empty. */
4836 make_cleanup (xfree
, addr_string
);
4838 /* Make sure that all storage allocated to SALS gets freed. */
4839 make_cleanup (xfree
, sals
.sals
);
4841 /* Allocate space for all the cond expressions. */
4842 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4843 make_cleanup (xfree
, cond
);
4845 /* Allocate space for all the cond strings. */
4846 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4847 make_cleanup (xfree
, cond_string
);
4849 /* ----------------------------- SNIP -----------------------------
4850 Anything added to the cleanup chain beyond this point is assumed
4851 to be part of a breakpoint. If the breakpoint create goes
4852 through then that memory is not cleaned up. */
4853 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4855 /* Mark the contents of the addr_string for cleanup. These go on
4856 the breakpoint_chain and only occure if the breakpoint create
4858 for (i
= 0; i
< sals
.nelts
; i
++)
4860 if (addr_string
[i
] != NULL
)
4861 make_cleanup (xfree
, addr_string
[i
]);
4864 /* Wait until now before checking for garbage at the end of the
4865 address. That way cleanups can take care of freeing any
4867 if (*address_end
!= '\0')
4868 error ("Garbage %s following breakpoint address", address_end
);
4870 /* Resolve all line numbers to PC's. */
4871 breakpoint_sals_to_pc (&sals
, args
->address
);
4873 /* Verify that conditions can be parsed, before setting any
4875 for (i
= 0; i
< sals
.nelts
; i
++)
4877 if (args
->condition
!= NULL
)
4879 char *tok
= args
->condition
;
4880 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4882 error ("Garbage %s follows condition", tok
);
4883 make_cleanup (xfree
, cond
[i
]);
4884 cond_string
[i
] = xstrdup (args
->condition
);
4888 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4889 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4890 args
->tempflag
? del
: donttouch
,
4891 args
->thread
, args
->ignore_count
, 0/*from-tty*/);
4893 /* That's it. Discard the cleanups for data inserted into the
4895 discard_cleanups (breakpoint_chain
);
4896 /* But cleanup everything else. */
4897 do_cleanups (old_chain
);
4902 gdb_breakpoint (char *address
, char *condition
,
4903 int hardwareflag
, int tempflag
,
4904 int thread
, int ignore_count
)
4906 struct captured_breakpoint_args args
;
4907 args
.address
= address
;
4908 args
.condition
= condition
;
4909 args
.hardwareflag
= hardwareflag
;
4910 args
.tempflag
= tempflag
;
4911 args
.thread
= thread
;
4912 args
.ignore_count
= ignore_count
;
4913 return catch_errors (do_captured_breakpoint
, &args
,
4914 NULL
, RETURN_MASK_ALL
);
4919 break_at_finish_at_depth_command_1 (char *arg
, int flag
, int from_tty
)
4921 struct frame_info
*frame
;
4922 CORE_ADDR low
, high
, selected_pc
= 0;
4923 char *extra_args
= NULL
;
4926 int extra_args_len
= 0, if_arg
= 0;
4929 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
4932 if (default_breakpoint_valid
)
4936 selected_pc
= selected_frame
->pc
;
4941 error ("No selected frame.");
4944 error ("No default breakpoint address now.");
4948 extra_args
= strchr (arg
, ' ');
4952 extra_args_len
= strlen (extra_args
);
4953 level_arg
= (char *) xmalloc (extra_args
- arg
);
4954 strncpy (level_arg
, arg
, extra_args
- arg
- 1);
4955 level_arg
[extra_args
- arg
- 1] = '\0';
4959 level_arg
= (char *) xmalloc (strlen (arg
) + 1);
4960 strcpy (level_arg
, arg
);
4963 frame
= parse_frame_specification (level_arg
);
4965 selected_pc
= frame
->pc
;
4972 extra_args_len
= strlen (arg
);
4977 if (find_pc_partial_function (selected_pc
, (char **) NULL
, &low
, &high
))
4979 addr_string
= (char *) xmalloc (26 + extra_args_len
);
4981 sprintf (addr_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
4983 sprintf (addr_string
, "*0x%s", paddr_nz (high
));
4984 break_command_1 (addr_string
, flag
, from_tty
);
4985 xfree (addr_string
);
4988 error ("No function contains the specified address");
4991 error ("Unable to set breakpoint at procedure exit");
4996 break_at_finish_command_1 (char *arg
, int flag
, int from_tty
)
4998 char *addr_string
, *break_string
, *beg_addr_string
;
4999 CORE_ADDR low
, high
;
5000 struct symtabs_and_lines sals
;
5001 struct symtab_and_line sal
;
5002 struct cleanup
*old_chain
;
5003 char *extra_args
= NULL
;
5004 int extra_args_len
= 0;
5008 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5010 if (default_breakpoint_valid
)
5014 addr_string
= (char *) xmalloc (15);
5015 sprintf (addr_string
, "*0x%s", paddr_nz (selected_frame
->pc
));
5020 error ("No selected frame.");
5023 error ("No default breakpoint address now.");
5027 addr_string
= (char *) xmalloc (strlen (arg
) + 1);
5028 strcpy (addr_string
, arg
);
5034 extra_args_len
= strlen (arg
);
5038 /* get the stuff after the function name or address */
5039 extra_args
= strchr (arg
, ' ');
5043 extra_args_len
= strlen (extra_args
);
5050 beg_addr_string
= addr_string
;
5051 sals
= decode_line_1 (&addr_string
, 1, (struct symtab
*) NULL
, 0,
5054 xfree (beg_addr_string
);
5055 old_chain
= make_cleanup (xfree
, sals
.sals
);
5056 for (i
= 0; (i
< sals
.nelts
); i
++)
5059 if (find_pc_partial_function (sal
.pc
, (char **) NULL
, &low
, &high
))
5061 break_string
= (char *) xmalloc (extra_args_len
+ 26);
5063 sprintf (break_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
5065 sprintf (break_string
, "*0x%s", paddr_nz (high
));
5066 break_command_1 (break_string
, flag
, from_tty
);
5067 xfree (break_string
);
5070 error ("No function contains the specified address");
5074 warning ("Multiple breakpoints were set.\n");
5075 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5077 do_cleanups (old_chain
);
5081 /* Helper function for break_command_1 and disassemble_command. */
5084 resolve_sal_pc (struct symtab_and_line
*sal
)
5088 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5090 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5091 error ("No line %d in file \"%s\".",
5092 sal
->line
, sal
->symtab
->filename
);
5096 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5098 struct blockvector
*bv
;
5103 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
5106 b
= BLOCKVECTOR_BLOCK (bv
, index
);
5107 sym
= block_function (b
);
5110 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5111 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5115 /* It really is worthwhile to have the section, so we'll just
5116 have to look harder. This case can be executed if we have
5117 line numbers but no functions (as can happen in assembly
5120 struct minimal_symbol
*msym
;
5122 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5124 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5131 break_command (char *arg
, int from_tty
)
5133 break_command_1 (arg
, 0, from_tty
);
5137 break_at_finish_command (char *arg
, int from_tty
)
5139 break_at_finish_command_1 (arg
, 0, from_tty
);
5143 break_at_finish_at_depth_command (char *arg
, int from_tty
)
5145 break_at_finish_at_depth_command_1 (arg
, 0, from_tty
);
5149 tbreak_command (char *arg
, int from_tty
)
5151 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5155 tbreak_at_finish_command (char *arg
, int from_tty
)
5157 break_at_finish_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5161 hbreak_command (char *arg
, int from_tty
)
5163 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5167 thbreak_command (char *arg
, int from_tty
)
5169 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5173 stop_command (char *arg
, int from_tty
)
5175 printf_filtered ("Specify the type of breakpoint to set.\n\
5176 Usage: stop in <function | address>\n\
5181 stopin_command (char *arg
, int from_tty
)
5185 if (arg
== (char *) NULL
)
5187 else if (*arg
!= '*')
5192 /* look for a ':'. If this is a line number specification, then
5193 say it is bad, otherwise, it should be an address or
5194 function/method name */
5195 while (*argptr
&& !hasColon
)
5197 hasColon
= (*argptr
== ':');
5202 badInput
= (*argptr
!= ':'); /* Not a class::method */
5204 badInput
= isdigit (*arg
); /* a simple line number */
5208 printf_filtered ("Usage: stop in <function | address>\n");
5210 break_command_1 (arg
, 0, from_tty
);
5214 stopat_command (char *arg
, int from_tty
)
5218 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5225 /* look for a ':'. If there is a '::' then get out, otherwise
5226 it is probably a line number. */
5227 while (*argptr
&& !hasColon
)
5229 hasColon
= (*argptr
== ':');
5234 badInput
= (*argptr
== ':'); /* we have class::method */
5236 badInput
= !isdigit (*arg
); /* not a line number */
5240 printf_filtered ("Usage: stop at <line>\n");
5242 break_command_1 (arg
, 0, from_tty
);
5246 /* accessflag: hw_write: watch write,
5247 hw_read: watch read,
5248 hw_access: watch access (read or write) */
5250 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5252 struct breakpoint
*b
;
5253 struct symtab_and_line sal
;
5254 struct expression
*exp
;
5255 struct block
*exp_valid_block
;
5256 struct value
*val
, *mark
;
5257 struct frame_info
*frame
;
5258 struct frame_info
*prev_frame
= NULL
;
5259 char *exp_start
= NULL
;
5260 char *exp_end
= NULL
;
5261 char *tok
, *end_tok
;
5263 char *cond_start
= NULL
;
5264 char *cond_end
= NULL
;
5265 struct expression
*cond
= NULL
;
5266 int i
, other_type_used
, target_resources_ok
= 0;
5267 enum bptype bp_type
;
5270 INIT_SAL (&sal
); /* initialize to zeroes */
5272 /* Parse arguments. */
5273 innermost_block
= NULL
;
5275 exp
= parse_exp_1 (&arg
, 0, 0);
5277 exp_valid_block
= innermost_block
;
5278 mark
= value_mark ();
5279 val
= evaluate_expression (exp
);
5280 release_value (val
);
5281 if (VALUE_LAZY (val
))
5282 value_fetch_lazy (val
);
5285 while (*tok
== ' ' || *tok
== '\t')
5289 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5292 toklen
= end_tok
- tok
;
5293 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5295 tok
= cond_start
= end_tok
+ 1;
5296 cond
= parse_exp_1 (&tok
, 0, 0);
5300 error ("Junk at end of command.");
5302 if (accessflag
== hw_read
)
5303 bp_type
= bp_read_watchpoint
;
5304 else if (accessflag
== hw_access
)
5305 bp_type
= bp_access_watchpoint
;
5307 bp_type
= bp_hardware_watchpoint
;
5309 mem_cnt
= can_use_hardware_watchpoint (val
);
5310 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5311 error ("Expression cannot be implemented with read/access watchpoint.");
5314 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5315 target_resources_ok
=
5316 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5318 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5319 error ("Target does not support this type of hardware watchpoint.");
5321 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5322 error ("Target can only support one kind of HW watchpoint at a time.");
5325 #if defined(HPUXHPPA)
5326 /* On HP-UX if you set a h/w
5327 watchpoint before the "run" command, the inferior dies with a e.g.,
5328 SIGILL once you start it. I initially believed this was due to a
5329 bad interaction between page protection traps and the initial
5330 startup sequence by the dynamic linker.
5332 However, I tried avoiding that by having HP-UX's implementation of
5333 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid
5334 yet, which forced slow watches before a "run" or "attach", and it
5335 still fails somewhere in the startup code.
5337 Until I figure out what's happening, I'm disallowing watches altogether
5338 before the "run" or "attach" command. We'll tell the user they must
5339 set watches after getting the program started. */
5340 if (!target_has_execution
)
5342 warning ("can't do that without a running program; try \"break main\", \"run\" first");
5345 #endif /* HPUXHPPA */
5347 /* Now set up the breakpoint. */
5348 b
= set_raw_breakpoint (sal
);
5349 set_breakpoint_count (breakpoint_count
+ 1);
5350 b
->number
= breakpoint_count
;
5351 b
->disposition
= donttouch
;
5353 b
->exp_valid_block
= exp_valid_block
;
5354 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5358 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5362 frame
= block_innermost_frame (exp_valid_block
);
5365 prev_frame
= get_prev_frame (frame
);
5366 b
->watchpoint_frame
= frame
->frame
;
5369 b
->watchpoint_frame
= (CORE_ADDR
) 0;
5371 if (mem_cnt
&& target_resources_ok
> 0)
5374 b
->type
= bp_watchpoint
;
5376 /* If the expression is "local", then set up a "watchpoint scope"
5377 breakpoint at the point where we've left the scope of the watchpoint
5379 if (innermost_block
)
5383 struct breakpoint
*scope_breakpoint
;
5384 struct symtab_and_line scope_sal
;
5386 INIT_SAL (&scope_sal
); /* initialize to zeroes */
5387 scope_sal
.pc
= get_frame_pc (prev_frame
);
5388 scope_sal
.section
= find_pc_overlay (scope_sal
.pc
);
5390 scope_breakpoint
= set_raw_breakpoint (scope_sal
);
5391 set_breakpoint_count (breakpoint_count
+ 1);
5392 scope_breakpoint
->number
= breakpoint_count
;
5394 scope_breakpoint
->type
= bp_watchpoint_scope
;
5395 scope_breakpoint
->enable
= enabled
;
5397 /* Automatically delete the breakpoint when it hits. */
5398 scope_breakpoint
->disposition
= del
;
5400 /* Only break in the proper frame (help with recursion). */
5401 scope_breakpoint
->frame
= prev_frame
->frame
;
5403 /* Set the address at which we will stop. */
5404 scope_breakpoint
->address
= get_frame_pc (prev_frame
);
5406 /* The scope breakpoint is related to the watchpoint. We
5407 will need to act on them together. */
5408 b
->related_breakpoint
= scope_breakpoint
;
5411 value_free_to_mark (mark
);
5415 /* Return count of locations need to be watched and can be handled
5416 in hardware. If the watchpoint can not be handled
5417 in hardware return zero. */
5419 #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
5420 #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \
5421 ((BYTE_SIZE) <= (REGISTER_SIZE))
5424 #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
5425 #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
5426 (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN))
5430 can_use_hardware_watchpoint (struct value
*v
)
5432 int found_memory_cnt
= 0;
5433 struct value
*head
= v
;
5435 /* Did the user specifically forbid us to use hardware watchpoints? */
5436 if (!can_use_hw_watchpoints
)
5439 /* Make sure that the value of the expression depends only upon
5440 memory contents, and values computed from them within GDB. If we
5441 find any register references or function calls, we can't use a
5442 hardware watchpoint.
5444 The idea here is that evaluating an expression generates a series
5445 of values, one holding the value of every subexpression. (The
5446 expression a*b+c has five subexpressions: a, b, a*b, c, and
5447 a*b+c.) GDB's values hold almost enough information to establish
5448 the criteria given above --- they identify memory lvalues,
5449 register lvalues, computed values, etcetera. So we can evaluate
5450 the expression, and then scan the chain of values that leaves
5451 behind to decide whether we can detect any possible change to the
5452 expression's final value using only hardware watchpoints.
5454 However, I don't think that the values returned by inferior
5455 function calls are special in any way. So this function may not
5456 notice that an expression involving an inferior function call
5457 can't be watched with hardware watchpoints. FIXME. */
5458 for (; v
; v
= v
->next
)
5460 if (VALUE_LVAL (v
) == lval_memory
)
5463 /* A lazy memory lvalue is one that GDB never needed to fetch;
5464 we either just used its address (e.g., `a' in `a.b') or
5465 we never needed it at all (e.g., `a' in `a,b'). */
5469 /* Ahh, memory we actually used! Check if we can cover
5470 it with hardware watchpoints. */
5471 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
5473 /* We only watch structs and arrays if user asked for it
5474 explicitly, never if they just happen to appear in a
5475 middle of some value chain. */
5477 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5478 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5480 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
5481 int len
= TYPE_LENGTH (VALUE_TYPE (v
));
5483 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5490 else if (v
->lval
!= not_lval
&& v
->modifiable
== 0)
5491 return 0; /* ??? What does this represent? */
5492 else if (v
->lval
== lval_register
)
5493 return 0; /* cannot watch a register with a HW watchpoint */
5496 /* The expression itself looks suitable for using a hardware
5497 watchpoint, but give the target machine a chance to reject it. */
5498 return found_memory_cnt
;
5503 watch_command_wrapper (char *arg
, int from_tty
)
5505 watch_command (arg
, from_tty
);
5509 watch_command (char *arg
, int from_tty
)
5511 watch_command_1 (arg
, hw_write
, from_tty
);
5516 rwatch_command_wrapper (char *arg
, int from_tty
)
5518 rwatch_command (arg
, from_tty
);
5522 rwatch_command (char *arg
, int from_tty
)
5524 watch_command_1 (arg
, hw_read
, from_tty
);
5529 awatch_command_wrapper (char *arg
, int from_tty
)
5531 awatch_command (arg
, from_tty
);
5535 awatch_command (char *arg
, int from_tty
)
5537 watch_command_1 (arg
, hw_access
, from_tty
);
5541 /* Helper routines for the until_command routine in infcmd.c. Here
5542 because it uses the mechanisms of breakpoints. */
5544 /* This function is called by fetch_inferior_event via the
5545 cmd_continuation pointer, to complete the until command. It takes
5546 care of cleaning up the temporary breakpoints set up by the until
5549 until_break_command_continuation (struct continuation_arg
*arg
)
5551 struct cleanup
*cleanups
;
5553 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5554 do_exec_cleanups (cleanups
);
5559 until_break_command (char *arg
, int from_tty
)
5561 struct symtabs_and_lines sals
;
5562 struct symtab_and_line sal
;
5563 struct frame_info
*prev_frame
= get_prev_frame (selected_frame
);
5564 struct breakpoint
*breakpoint
;
5565 struct cleanup
*old_chain
;
5566 struct continuation_arg
*arg1
;
5569 clear_proceed_status ();
5571 /* Set a breakpoint where the user wants it and at return from
5574 if (default_breakpoint_valid
)
5575 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5576 default_breakpoint_line
, (char ***) NULL
);
5578 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5579 0, (char ***) NULL
);
5581 if (sals
.nelts
!= 1)
5582 error ("Couldn't get information on specified line.");
5585 xfree (sals
.sals
); /* malloc'd, so freed */
5588 error ("Junk at end of arguments.");
5590 resolve_sal_pc (&sal
);
5592 breakpoint
= set_momentary_breakpoint (sal
, selected_frame
, bp_until
);
5594 if (!event_loop_p
|| !target_can_async_p ())
5595 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5597 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5599 /* If we are running asynchronously, and the target supports async
5600 execution, we are not waiting for the target to stop, in the call
5601 tp proceed, below. This means that we cannot delete the
5602 brekpoints until the target has actually stopped. The only place
5603 where we get a chance to do that is in fetch_inferior_event, so
5604 we must set things up for that. */
5606 if (event_loop_p
&& target_can_async_p ())
5608 /* In this case the arg for the continuation is just the point
5609 in the exec_cleanups chain from where to start doing
5610 cleanups, because all the continuation does is the cleanups in
5611 the exec_cleanup_chain. */
5613 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
5615 arg1
->data
.pointer
= old_chain
;
5617 add_continuation (until_break_command_continuation
, arg1
);
5620 /* Keep within the current frame */
5624 sal
= find_pc_line (prev_frame
->pc
, 0);
5625 sal
.pc
= prev_frame
->pc
;
5626 breakpoint
= set_momentary_breakpoint (sal
, prev_frame
, bp_until
);
5627 if (!event_loop_p
|| !target_can_async_p ())
5628 make_cleanup_delete_breakpoint (breakpoint
);
5630 make_exec_cleanup_delete_breakpoint (breakpoint
);
5633 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
5634 /* Do the cleanups now, anly if we are not running asynchronously,
5635 of if we are, but the target is still synchronous. */
5636 if (!event_loop_p
|| !target_can_async_p ())
5637 do_cleanups (old_chain
);
5641 /* These aren't used; I don't konw what they were for. */
5642 /* Set a breakpoint at the catch clause for NAME. */
5644 catch_breakpoint (char *name
)
5649 disable_catch_breakpoint (void)
5654 delete_catch_breakpoint (void)
5659 enable_catch_breakpoint (void)
5666 struct sal_chain
*next
;
5667 struct symtab_and_line sal
;
5671 /* Not really used -- invocation in handle_gnu_4_16_catch_command
5672 had been commented out in the v.4.16 sources, and stays
5673 disabled there now because "catch NAME" syntax isn't allowed.
5675 /* This isn't used; I don't know what it was for. */
5676 /* For each catch clause identified in ARGS, run FUNCTION
5677 with that clause as an argument. */
5678 static struct symtabs_and_lines
5679 map_catch_names (char *args
, int (*function
) ())
5681 register char *p
= args
;
5683 struct symtabs_and_lines sals
;
5685 struct sal_chain
*sal_chain
= 0;
5689 error_no_arg ("one or more catch names");
5697 /* Don't swallow conditional part. */
5698 if (p1
[0] == 'i' && p1
[1] == 'f'
5699 && (p1
[2] == ' ' || p1
[2] == '\t'))
5705 while (isalnum (*p1
) || *p1
== '_' || *p1
== '$')
5709 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
5710 error ("Arguments must be catch names.");
5716 struct sal_chain
*next
= (struct sal_chain
*)
5717 alloca (sizeof (struct sal_chain
));
5718 next
->next
= sal_chain
;
5719 next
->sal
= get_catch_sal (p
);
5724 printf_unfiltered ("No catch clause for exception %s.\n", p
);
5729 while (*p
== ' ' || *p
== '\t')
5735 /* This shares a lot of code with `print_frame_label_vars' from stack.c. */
5737 static struct symtabs_and_lines
5738 get_catch_sals (int this_level_only
)
5740 register struct blockvector
*bl
;
5741 register struct block
*block
;
5742 int index
, have_default
= 0;
5744 struct symtabs_and_lines sals
;
5745 struct sal_chain
*sal_chain
= 0;
5746 char *blocks_searched
;
5748 /* Not sure whether an error message is always the correct response,
5749 but it's better than a core dump. */
5750 if (selected_frame
== NULL
)
5751 error ("No selected frame.");
5752 block
= get_frame_block (selected_frame
);
5753 pc
= selected_frame
->pc
;
5759 error ("No symbol table info available.\n");
5761 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
5762 blocks_searched
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5763 memset (blocks_searched
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5767 CORE_ADDR end
= BLOCK_END (block
) - 4;
5770 if (bl
!= blockvector_for_pc (end
, &index
))
5771 error ("blockvector blotch");
5772 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
5773 error ("blockvector botch");
5774 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
5777 /* Don't print out blocks that have gone by. */
5778 while (index
< last_index
5779 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
5782 while (index
< last_index
5783 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
5785 if (blocks_searched
[index
] == 0)
5787 struct block
*b
= BLOCKVECTOR_BLOCK (bl
, index
);
5790 register struct symbol
*sym
;
5792 nsyms
= BLOCK_NSYMS (b
);
5794 for (i
= 0; i
< nsyms
; i
++)
5796 sym
= BLOCK_SYM (b
, i
);
5797 if (STREQ (SYMBOL_NAME (sym
), "default"))
5803 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
5805 struct sal_chain
*next
= (struct sal_chain
*)
5806 alloca (sizeof (struct sal_chain
));
5807 next
->next
= sal_chain
;
5808 next
->sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
),
5813 blocks_searched
[index
] = 1;
5819 if (sal_chain
&& this_level_only
)
5822 /* After handling the function's top-level block, stop.
5823 Don't continue to its superblock, the block of
5824 per-file symbols. */
5825 if (BLOCK_FUNCTION (block
))
5827 block
= BLOCK_SUPERBLOCK (block
);
5832 struct sal_chain
*tmp_chain
;
5834 /* Count the number of entries. */
5835 for (index
= 0, tmp_chain
= sal_chain
; tmp_chain
;
5836 tmp_chain
= tmp_chain
->next
)
5840 sals
.sals
= (struct symtab_and_line
*)
5841 xmalloc (index
* sizeof (struct symtab_and_line
));
5842 for (index
= 0; sal_chain
; sal_chain
= sal_chain
->next
, index
++)
5843 sals
.sals
[index
] = sal_chain
->sal
;
5850 ep_skip_leading_whitespace (char **s
)
5852 if ((s
== NULL
) || (*s
== NULL
))
5854 while (isspace (**s
))
5858 /* This function examines a string, and attempts to find a token
5859 that might be an event name in the leading characters. If a
5860 possible match is found, a pointer to the last character of
5861 the token is returned. Else, NULL is returned. */
5864 ep_find_event_name_end (char *arg
)
5867 char *event_name_end
= NULL
;
5869 /* If we could depend upon the presense of strrpbrk, we'd use that... */
5873 /* We break out of the loop when we find a token delimiter.
5874 Basically, we're looking for alphanumerics and underscores;
5875 anything else delimites the token. */
5878 if (!isalnum (*s
) && (*s
!= '_'))
5884 return event_name_end
;
5888 /* This function attempts to parse an optional "if <cond>" clause
5889 from the arg string. If one is not found, it returns NULL.
5891 Else, it returns a pointer to the condition string. (It does not
5892 attempt to evaluate the string against a particular block.) And,
5893 it updates arg to point to the first character following the parsed
5894 if clause in the arg string. */
5897 ep_parse_optional_if_clause (char **arg
)
5901 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
5904 /* Skip the "if" keyword. */
5907 /* Skip any extra leading whitespace, and record the start of the
5908 condition string. */
5909 ep_skip_leading_whitespace (arg
);
5912 /* Assume that the condition occupies the remainder of the arg string. */
5913 (*arg
) += strlen (cond_string
);
5918 /* This function attempts to parse an optional filename from the arg
5919 string. If one is not found, it returns NULL.
5921 Else, it returns a pointer to the parsed filename. (This function
5922 makes no attempt to verify that a file of that name exists, or is
5923 accessible.) And, it updates arg to point to the first character
5924 following the parsed filename in the arg string.
5926 Note that clients needing to preserve the returned filename for
5927 future access should copy it to their own buffers. */
5929 ep_parse_optional_filename (char **arg
)
5931 static char filename
[1024];
5936 if ((*arg_p
== '\0') || isspace (*arg_p
))
5954 /* Commands to deal with catching events, such as signals, exceptions,
5955 process start/exit, etc. */
5959 catch_fork
, catch_vfork
5963 #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
5964 static void catch_fork_command_1 (catch_fork_kind fork_kind
,
5965 char *arg
, int tempflag
, int from_tty
);
5968 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
5971 char *cond_string
= NULL
;
5973 ep_skip_leading_whitespace (&arg
);
5975 /* The allowed syntax is:
5977 catch [v]fork if <cond>
5979 First, check if there's an if clause. */
5980 cond_string
= ep_parse_optional_if_clause (&arg
);
5982 if ((*arg
!= '\0') && !isspace (*arg
))
5983 error ("Junk at end of arguments.");
5985 /* If this target supports it, create a fork or vfork catchpoint
5986 and enable reporting of such events. */
5990 create_fork_event_catchpoint (tempflag
, cond_string
);
5993 create_vfork_event_catchpoint (tempflag
, cond_string
);
5996 error ("unsupported or unknown fork kind; cannot catch it");
6002 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
6004 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6006 char *cond_string
= NULL
;
6008 ep_skip_leading_whitespace (&arg
);
6010 /* The allowed syntax is:
6012 catch exec if <cond>
6014 First, check if there's an if clause. */
6015 cond_string
= ep_parse_optional_if_clause (&arg
);
6017 if ((*arg
!= '\0') && !isspace (*arg
))
6018 error ("Junk at end of arguments.");
6020 /* If this target supports it, create an exec catchpoint
6021 and enable reporting of such events. */
6022 create_exec_event_catchpoint (tempflag
, cond_string
);
6026 #if defined(SOLIB_ADD)
6028 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6030 char *dll_pathname
= NULL
;
6031 char *cond_string
= NULL
;
6033 ep_skip_leading_whitespace (&arg
);
6035 /* The allowed syntax is:
6037 catch load if <cond>
6038 catch load <filename>
6039 catch load <filename> if <cond>
6041 The user is not allowed to specify the <filename> after an
6044 We'll ignore the pathological case of a file named "if".
6046 First, check if there's an if clause. If so, then there
6047 cannot be a filename. */
6048 cond_string
= ep_parse_optional_if_clause (&arg
);
6050 /* If there was an if clause, then there cannot be a filename.
6051 Else, there might be a filename and an if clause. */
6052 if (cond_string
== NULL
)
6054 dll_pathname
= ep_parse_optional_filename (&arg
);
6055 ep_skip_leading_whitespace (&arg
);
6056 cond_string
= ep_parse_optional_if_clause (&arg
);
6059 if ((*arg
!= '\0') && !isspace (*arg
))
6060 error ("Junk at end of arguments.");
6062 /* Create a load breakpoint that only triggers when a load of
6063 the specified dll (or any dll, if no pathname was specified)
6065 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6066 dll_pathname
, cond_string
);
6070 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6072 char *dll_pathname
= NULL
;
6073 char *cond_string
= NULL
;
6075 ep_skip_leading_whitespace (&arg
);
6077 /* The allowed syntax is:
6079 catch unload if <cond>
6080 catch unload <filename>
6081 catch unload <filename> if <cond>
6083 The user is not allowed to specify the <filename> after an
6086 We'll ignore the pathological case of a file named "if".
6088 First, check if there's an if clause. If so, then there
6089 cannot be a filename. */
6090 cond_string
= ep_parse_optional_if_clause (&arg
);
6092 /* If there was an if clause, then there cannot be a filename.
6093 Else, there might be a filename and an if clause. */
6094 if (cond_string
== NULL
)
6096 dll_pathname
= ep_parse_optional_filename (&arg
);
6097 ep_skip_leading_whitespace (&arg
);
6098 cond_string
= ep_parse_optional_if_clause (&arg
);
6101 if ((*arg
!= '\0') && !isspace (*arg
))
6102 error ("Junk at end of arguments.");
6104 /* Create an unload breakpoint that only triggers when an unload of
6105 the specified dll (or any dll, if no pathname was specified)
6107 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6108 dll_pathname
, cond_string
);
6110 #endif /* SOLIB_ADD */
6112 /* Commands to deal with catching exceptions. */
6114 /* Set a breakpoint at the specified callback routine for an
6115 exception event callback */
6118 create_exception_catchpoint (int tempflag
, char *cond_string
,
6119 enum exception_event_kind ex_event
,
6120 struct symtab_and_line
*sal
)
6122 struct breakpoint
*b
;
6123 int thread
= -1; /* All threads. */
6125 if (!sal
) /* no exception support? */
6128 b
= set_raw_breakpoint (*sal
);
6129 set_breakpoint_count (breakpoint_count
+ 1);
6130 b
->number
= breakpoint_count
;
6132 b
->cond_string
= (cond_string
== NULL
) ?
6133 NULL
: savestring (cond_string
, strlen (cond_string
));
6135 b
->addr_string
= NULL
;
6136 b
->enable
= enabled
;
6137 b
->disposition
= tempflag
? del
: donttouch
;
6140 case EX_EVENT_THROW
:
6141 b
->type
= bp_catch_throw
;
6143 case EX_EVENT_CATCH
:
6144 b
->type
= bp_catch_catch
;
6146 default: /* error condition */
6148 b
->enable
= disabled
;
6149 error ("Internal error -- invalid catchpoint kind");
6154 /* Deal with "catch catch" and "catch throw" commands */
6157 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6158 int tempflag
, int from_tty
)
6160 char *cond_string
= NULL
;
6161 struct symtab_and_line
*sal
= NULL
;
6163 ep_skip_leading_whitespace (&arg
);
6165 cond_string
= ep_parse_optional_if_clause (&arg
);
6167 if ((*arg
!= '\0') && !isspace (*arg
))
6168 error ("Junk at end of arguments.");
6170 if ((ex_event
!= EX_EVENT_THROW
) &&
6171 (ex_event
!= EX_EVENT_CATCH
))
6172 error ("Unsupported or unknown exception event; cannot catch it");
6174 /* See if we can find a callback routine */
6175 sal
= target_enable_exception_callback (ex_event
, 1);
6179 /* We have callbacks from the runtime system for exceptions.
6180 Set a breakpoint on the sal found, if no errors */
6181 if (sal
!= (struct symtab_and_line
*) -1)
6182 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
6184 return; /* something went wrong with setting up callbacks */
6188 /* No callbacks from runtime system for exceptions.
6189 Try GNU C++ exception breakpoints using labels in debug info. */
6190 if (ex_event
== EX_EVENT_CATCH
)
6192 handle_gnu_4_16_catch_command (arg
, tempflag
, from_tty
);
6194 else if (ex_event
== EX_EVENT_THROW
)
6196 /* Set a breakpoint on __raise_exception () */
6198 warning ("Unsupported with this platform/compiler combination.");
6199 warning ("Perhaps you can achieve the effect you want by setting");
6200 warning ("a breakpoint on __raise_exception().");
6205 /* Cover routine to allow wrapping target_enable_exception_catchpoints
6206 inside a catch_errors */
6209 cover_target_enable_exception_callback (PTR arg
)
6211 args_for_catchpoint_enable
*args
= arg
;
6212 struct symtab_and_line
*sal
;
6213 sal
= target_enable_exception_callback (args
->kind
, args
->enable
);
6216 else if (sal
== (struct symtab_and_line
*) -1)
6219 return 1; /*is valid */
6224 /* This is the original v.4.16 and earlier version of the
6225 catch_command_1() function. Now that other flavours of "catch"
6226 have been introduced, and since exception handling can be handled
6227 in other ways (through target ops) also, this is used only for the
6228 GNU C++ exception handling system.
6229 Note: Only the "catch" flavour of GDB 4.16 is handled here. The
6230 "catch NAME" is now no longer allowed in catch_command_1(). Also,
6231 there was no code in GDB 4.16 for "catch throw".
6233 Called from catch_exception_command_1 () */
6237 handle_gnu_4_16_catch_command (char *arg
, int tempflag
, int from_tty
)
6239 /* First, translate ARG into something we can deal with in terms
6242 struct symtabs_and_lines sals
;
6243 struct symtab_and_line sal
;
6244 register struct expression
*cond
= 0;
6245 register struct breakpoint
*b
;
6249 INIT_SAL (&sal
); /* initialize to zeroes */
6251 /* If no arg given, or if first arg is 'if ', all active catch clauses
6252 are breakpointed. */
6254 if (!arg
|| (arg
[0] == 'i' && arg
[1] == 'f'
6255 && (arg
[2] == ' ' || arg
[2] == '\t')))
6257 /* Grab all active catch clauses. */
6258 sals
= get_catch_sals (0);
6262 /* Grab selected catch clauses. */
6263 error ("catch NAME not implemented");
6266 /* Not sure why this code has been disabled. I'm leaving
6267 it disabled. We can never come here now anyway
6268 since we don't allow the "catch NAME" syntax.
6271 /* This isn't used; I don't know what it was for. */
6272 sals
= map_catch_names (arg
, catch_breakpoint
);
6280 for (i
= 0; i
< sals
.nelts
; i
++)
6282 resolve_sal_pc (&sals
.sals
[i
]);
6286 if (arg
[0] == 'i' && arg
[1] == 'f'
6287 && (arg
[2] == ' ' || arg
[2] == '\t'))
6288 cond
= parse_exp_1 ((arg
+= 2, &arg
),
6289 block_for_pc (sals
.sals
[i
].pc
), 0);
6291 error ("Junk at end of arguments.");
6296 for (i
= 0; i
< sals
.nelts
; i
++)
6301 describe_other_breakpoints (sal
.pc
, sal
.section
);
6303 b
= set_raw_breakpoint (sal
);
6304 set_breakpoint_count (breakpoint_count
+ 1);
6305 b
->number
= breakpoint_count
;
6307 /* Important -- this is an ordinary breakpoint. For platforms
6308 with callback support for exceptions,
6309 create_exception_catchpoint() will create special bp types
6310 (bp_catch_catch and bp_catch_throw), and there is code in
6311 insert_breakpoints() and elsewhere that depends on that. */
6312 b
->type
= bp_breakpoint
;
6315 b
->enable
= enabled
;
6316 b
->disposition
= tempflag
? del
: donttouch
;
6323 warning ("Multiple breakpoints were set.");
6324 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
6330 /* This creates a temporary internal breakpoint
6331 just to placate infrun */
6332 static struct breakpoint
*
6333 create_temp_exception_breakpoint (CORE_ADDR pc
)
6335 struct symtab_and_line sal
;
6336 struct breakpoint
*b
;
6343 b
= set_raw_breakpoint (sal
);
6345 error ("Internal error -- couldn't set temp exception breakpoint");
6347 b
->type
= bp_breakpoint
;
6348 b
->disposition
= del
;
6349 b
->enable
= enabled
;
6351 b
->number
= internal_breakpoint_number
--;
6357 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6360 /* The first argument may be an event name, such as "start" or "load".
6361 If so, then handle it as such. If it doesn't match an event name,
6362 then attempt to interpret it as an exception name. (This latter is
6363 the v4.16-and-earlier GDB meaning of the "catch" command.)
6365 First, try to find the bounds of what might be an event name. */
6366 char *arg1_start
= arg
;
6370 if (arg1_start
== NULL
)
6372 /* Old behaviour was to use pre-v-4.16 syntax */
6373 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6375 /* Now, this is not allowed */
6376 error ("Catch requires an event name.");
6379 arg1_end
= ep_find_event_name_end (arg1_start
);
6380 if (arg1_end
== NULL
)
6381 error ("catch requires an event");
6382 arg1_length
= arg1_end
+ 1 - arg1_start
;
6384 /* Try to match what we found against known event names. */
6385 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6387 error ("Catch of signal not yet implemented");
6389 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6391 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6392 tempflag
, from_tty
);
6394 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6396 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6397 tempflag
, from_tty
);
6399 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6401 error ("Catch of thread_start not yet implemented");
6403 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6405 error ("Catch of thread_exit not yet implemented");
6407 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6409 error ("Catch of thread_join not yet implemented");
6411 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6413 error ("Catch of start not yet implemented");
6415 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6417 error ("Catch of exit not yet implemented");
6419 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6421 #if defined(CHILD_INSERT_FORK_CATCHPOINT)
6422 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6424 error ("Catch of fork not yet implemented");
6427 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6429 #if defined(CHILD_INSERT_VFORK_CATCHPOINT)
6430 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6432 error ("Catch of vfork not yet implemented");
6435 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6437 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
6438 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6440 error ("Catch of exec not yet implemented");
6443 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6445 #if defined(SOLIB_ADD)
6446 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6448 error ("Catch of load not implemented");
6451 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6453 #if defined(SOLIB_ADD)
6454 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6456 error ("Catch of load not implemented");
6459 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6461 error ("Catch of stop not yet implemented");
6464 /* This doesn't appear to be an event name */
6468 /* Pre-v.4.16 behaviour was to treat the argument
6469 as the name of an exception */
6470 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6471 /* Now this is not allowed */
6472 error ("Unknown event kind specified for catch");
6477 /* Used by the gui, could be made a worker for other things. */
6480 set_breakpoint_sal (struct symtab_and_line sal
)
6482 struct breakpoint
*b
;
6483 b
= set_raw_breakpoint (sal
);
6484 set_breakpoint_count (breakpoint_count
+ 1);
6485 b
->number
= breakpoint_count
;
6486 b
->type
= bp_breakpoint
;
6493 /* These aren't used; I don't know what they were for. */
6494 /* Disable breakpoints on all catch clauses described in ARGS. */
6496 disable_catch (char *args
)
6498 /* Map the disable command to catch clauses described in ARGS. */
6501 /* Enable breakpoints on all catch clauses described in ARGS. */
6503 enable_catch (char *args
)
6505 /* Map the disable command to catch clauses described in ARGS. */
6508 /* Delete breakpoints on all catch clauses in the active scope. */
6510 delete_catch (char *args
)
6512 /* Map the delete command to catch clauses described in ARGS. */
6517 catch_command (char *arg
, int from_tty
)
6519 catch_command_1 (arg
, 0, from_tty
);
6524 tcatch_command (char *arg
, int from_tty
)
6526 catch_command_1 (arg
, 1, from_tty
);
6531 clear_command (char *arg
, int from_tty
)
6533 register struct breakpoint
*b
, *b1
;
6535 struct symtabs_and_lines sals
;
6536 struct symtab_and_line sal
;
6537 register struct breakpoint
*found
;
6542 sals
= decode_line_spec (arg
, 1);
6547 sals
.sals
= (struct symtab_and_line
*)
6548 xmalloc (sizeof (struct symtab_and_line
));
6549 INIT_SAL (&sal
); /* initialize to zeroes */
6550 sal
.line
= default_breakpoint_line
;
6551 sal
.symtab
= default_breakpoint_symtab
;
6552 sal
.pc
= default_breakpoint_address
;
6553 if (sal
.symtab
== 0)
6554 error ("No source file specified.");
6562 /* For each line spec given, delete bps which correspond
6563 to it. We do this in two loops: the first loop looks at
6564 the initial bp(s) in the chain which should be deleted,
6565 the second goes down the rest of the chain looking ahead
6566 one so it can take those bps off the chain without messing
6570 for (i
= 0; i
< sals
.nelts
; i
++)
6572 /* If exact pc given, clear bpts at that pc.
6573 If line given (pc == 0), clear all bpts on specified line.
6574 If defaulting, clear all bpts on default line
6577 defaulting sal.pc != 0 tests to do
6582 1 0 <can't happen> */
6585 found
= (struct breakpoint
*) 0;
6588 while (breakpoint_chain
6589 /* Why don't we check here that this is not
6590 a watchpoint, etc., as we do below?
6591 I can't make it fail, but don't know
6592 what's stopping the failure: a watchpoint
6593 of the same address as "sal.pc" should
6594 wind up being deleted. */
6596 && (((sal
.pc
&& (breakpoint_chain
->address
== sal
.pc
)) &&
6597 (overlay_debugging
== 0 ||
6598 breakpoint_chain
->section
== sal
.section
))
6599 || ((default_match
|| (0 == sal
.pc
))
6600 && breakpoint_chain
->source_file
!= NULL
6601 && sal
.symtab
!= NULL
6602 && STREQ (breakpoint_chain
->source_file
, sal
.symtab
->filename
)
6603 && breakpoint_chain
->line_number
== sal
.line
)))
6606 b1
= breakpoint_chain
;
6607 breakpoint_chain
= b1
->next
;
6615 && b
->next
->type
!= bp_none
6616 && b
->next
->type
!= bp_watchpoint
6617 && b
->next
->type
!= bp_hardware_watchpoint
6618 && b
->next
->type
!= bp_read_watchpoint
6619 && b
->next
->type
!= bp_access_watchpoint
6620 && (((sal
.pc
&& (b
->next
->address
== sal
.pc
)) &&
6621 (overlay_debugging
== 0 ||
6622 b
->next
->section
== sal
.section
))
6623 || ((default_match
|| (0 == sal
.pc
))
6624 && b
->next
->source_file
!= NULL
6625 && sal
.symtab
!= NULL
6626 && STREQ (b
->next
->source_file
, sal
.symtab
->filename
)
6627 && b
->next
->line_number
== sal
.line
)))
6640 error ("No breakpoint at %s.", arg
);
6642 error ("No breakpoint at this line.");
6646 from_tty
= 1; /* Always report if deleted more than one */
6648 printf_unfiltered ("Deleted breakpoint%s ", found
->next
? "s" : "");
6649 breakpoints_changed ();
6653 printf_unfiltered ("%d ", found
->number
);
6655 delete_breakpoint (found
);
6659 putchar_unfiltered ('\n');
6664 /* Delete breakpoint in BS if they are `delete' breakpoints and
6665 all breakpoints that are marked for deletion, whether hit or not.
6666 This is called after any breakpoint is hit, or after errors. */
6669 breakpoint_auto_delete (bpstat bs
)
6671 struct breakpoint
*b
, *temp
;
6673 for (; bs
; bs
= bs
->next
)
6674 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== del
6676 delete_breakpoint (bs
->breakpoint_at
);
6678 ALL_BREAKPOINTS_SAFE (b
, temp
)
6680 if (b
->disposition
== del_at_next_stop
)
6681 delete_breakpoint (b
);
6685 /* Delete a breakpoint and clean up all traces of it in the data
6689 delete_breakpoint (struct breakpoint
*bpt
)
6691 register struct breakpoint
*b
;
6695 error ("Internal error (attempted to delete a NULL breakpoint)");
6698 /* Has this bp already been deleted? This can happen because multiple
6699 lists can hold pointers to bp's. bpstat lists are especial culprits.
6701 One example of this happening is a watchpoint's scope bp. When the
6702 scope bp triggers, we notice that the watchpoint is out of scope, and
6703 delete it. We also delete its scope bp. But the scope bp is marked
6704 "auto-deleting", and is already on a bpstat. That bpstat is then
6705 checked for auto-deleting bp's, which are deleted.
6707 A real solution to this problem might involve reference counts in bp's,
6708 and/or giving them pointers back to their referencing bpstat's, and
6709 teaching delete_breakpoint to only free a bp's storage when no more
6710 references were extent. A cheaper bandaid was chosen. */
6711 if (bpt
->type
== bp_none
)
6714 if (delete_breakpoint_hook
)
6715 delete_breakpoint_hook (bpt
);
6716 breakpoint_delete_event (bpt
->number
);
6719 remove_breakpoint (bpt
, mark_uninserted
);
6721 if (breakpoint_chain
== bpt
)
6722 breakpoint_chain
= bpt
->next
;
6724 /* If we have callback-style exception catchpoints, don't go through
6725 the adjustments to the C++ runtime library etc. if the inferior
6726 isn't actually running. target_enable_exception_callback for a
6727 null target ops vector gives an undesirable error message, so we
6728 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
6729 exceptions are supported in this way, it's OK for now. FIXME */
6730 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
6732 static char message1
[] = "Error in deleting catchpoint %d:\n";
6733 static char message
[sizeof (message1
) + 30];
6734 args_for_catchpoint_enable args
;
6736 /* Format possible error msg */
6737 sprintf (message
, message1
, bpt
->number
);
6738 args
.kind
= bpt
->type
== bp_catch_catch
?
6739 EX_EVENT_CATCH
: EX_EVENT_THROW
;
6741 catch_errors (cover_target_enable_exception_callback
, &args
,
6742 message
, RETURN_MASK_ALL
);
6749 b
->next
= bpt
->next
;
6753 /* Before turning off the visuals for the bp, check to see that
6754 there are no other bps at the same address. */
6761 clearIt
= (b
->address
!= bpt
->address
);
6768 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, bpt
, 0));
6769 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
6773 check_duplicates (bpt
->address
, bpt
->section
);
6774 /* If this breakpoint was inserted, and there is another breakpoint
6775 at the same address, we need to insert the other breakpoint. */
6777 && bpt
->type
!= bp_hardware_watchpoint
6778 && bpt
->type
!= bp_read_watchpoint
6779 && bpt
->type
!= bp_access_watchpoint
6780 && bpt
->type
!= bp_catch_fork
6781 && bpt
->type
!= bp_catch_vfork
6782 && bpt
->type
!= bp_catch_exec
)
6785 if (b
->address
== bpt
->address
6786 && b
->section
== bpt
->section
6788 && b
->enable
!= disabled
6789 && b
->enable
!= shlib_disabled
6790 && b
->enable
!= call_disabled
)
6794 /* We should never reach this point if there is a permanent
6795 breakpoint at the same address as the one being deleted.
6796 If there is a permanent breakpoint somewhere, it should
6797 always be the only one inserted. */
6798 if (b
->enable
== permanent
)
6799 internal_error (__FILE__
, __LINE__
,
6800 "another breakpoint was inserted on top of "
6801 "a permanent breakpoint");
6803 if (b
->type
== bp_hardware_breakpoint
)
6804 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
6806 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
6810 target_terminal_ours_for_output ();
6811 warning ("Cannot insert breakpoint %d:", b
->number
);
6812 memory_error (val
, b
->address
); /* which bombs us out */
6819 free_command_lines (&bpt
->commands
);
6822 if (bpt
->cond_string
!= NULL
)
6823 xfree (bpt
->cond_string
);
6824 if (bpt
->addr_string
!= NULL
)
6825 xfree (bpt
->addr_string
);
6826 if (bpt
->exp
!= NULL
)
6828 if (bpt
->exp_string
!= NULL
)
6829 xfree (bpt
->exp_string
);
6830 if (bpt
->val
!= NULL
)
6831 value_free (bpt
->val
);
6832 if (bpt
->source_file
!= NULL
)
6833 xfree (bpt
->source_file
);
6834 if (bpt
->dll_pathname
!= NULL
)
6835 xfree (bpt
->dll_pathname
);
6836 if (bpt
->triggered_dll_pathname
!= NULL
)
6837 xfree (bpt
->triggered_dll_pathname
);
6838 if (bpt
->exec_pathname
!= NULL
)
6839 xfree (bpt
->exec_pathname
);
6841 /* Be sure no bpstat's are pointing at it after it's been freed. */
6842 /* FIXME, how can we find all bpstat's?
6843 We just check stop_bpstat for now. */
6844 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6845 if (bs
->breakpoint_at
== bpt
)
6847 bs
->breakpoint_at
= NULL
;
6849 /* we'd call bpstat_clear_actions, but that free's stuff and due
6850 to the multiple pointers pointing to one item with no
6851 reference counts found anywhere through out the bpstat's (how
6852 do you spell fragile?), we don't want to free things twice --
6853 better a memory leak than a corrupt malloc pool! */
6854 bs
->commands
= NULL
;
6857 /* On the chance that someone will soon try again to delete this same
6858 bp, we mark it as deleted before freeing its storage. */
6859 bpt
->type
= bp_none
;
6865 do_delete_breakpoint_cleanup (void *b
)
6867 delete_breakpoint (b
);
6871 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6873 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6877 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6879 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6883 delete_command (char *arg
, int from_tty
)
6885 struct breakpoint
*b
, *temp
;
6889 int breaks_to_delete
= 0;
6891 /* Delete all breakpoints if no argument.
6892 Do not delete internal or call-dummy breakpoints, these
6893 have to be deleted with an explicit breakpoint number argument. */
6896 if (b
->type
!= bp_call_dummy
&&
6897 b
->type
!= bp_shlib_event
&&
6898 b
->type
!= bp_thread_event
&&
6900 breaks_to_delete
= 1;
6903 /* Ask user only if there are some breakpoints to delete. */
6905 || (breaks_to_delete
&& query ("Delete all breakpoints? ")))
6907 ALL_BREAKPOINTS_SAFE (b
, temp
)
6909 if (b
->type
!= bp_call_dummy
&&
6910 b
->type
!= bp_shlib_event
&&
6911 b
->type
!= bp_thread_event
&&
6913 delete_breakpoint (b
);
6918 map_breakpoint_numbers (arg
, delete_breakpoint
);
6921 /* Reset a breakpoint given it's struct breakpoint * BINT.
6922 The value we return ends up being the return value from catch_errors.
6923 Unused in this case. */
6926 breakpoint_re_set_one (PTR bint
)
6928 /* get past catch_errs */
6929 struct breakpoint
*b
= (struct breakpoint
*) bint
;
6932 struct symtabs_and_lines sals
;
6934 enum enable save_enable
;
6939 warning ("attempted to reset apparently deleted breakpoint #%d?",
6943 case bp_hardware_breakpoint
:
6945 case bp_catch_unload
:
6946 if (b
->addr_string
== NULL
)
6948 /* Anything without a string can't be re-set. */
6949 delete_breakpoint (b
);
6952 /* In case we have a problem, disable this breakpoint. We'll restore
6953 its status if we succeed. */
6954 save_enable
= b
->enable
;
6955 b
->enable
= disabled
;
6957 set_language (b
->language
);
6958 input_radix
= b
->input_radix
;
6960 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
);
6961 for (i
= 0; i
< sals
.nelts
; i
++)
6963 resolve_sal_pc (&sals
.sals
[i
]);
6965 /* Reparse conditions, they might contain references to the
6967 if (b
->cond_string
!= NULL
)
6972 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
6975 /* We need to re-set the breakpoint if the address changes... */
6976 if (b
->address
!= sals
.sals
[i
].pc
6977 /* ...or new and old breakpoints both have source files, and
6978 the source file name or the line number changes... */
6979 || (b
->source_file
!= NULL
6980 && sals
.sals
[i
].symtab
!= NULL
6981 && (!STREQ (b
->source_file
, sals
.sals
[i
].symtab
->filename
)
6982 || b
->line_number
!= sals
.sals
[i
].line
)
6984 /* ...or we switch between having a source file and not having
6986 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
6989 if (b
->source_file
!= NULL
)
6990 xfree (b
->source_file
);
6991 if (sals
.sals
[i
].symtab
== NULL
)
6992 b
->source_file
= NULL
;
6995 savestring (sals
.sals
[i
].symtab
->filename
,
6996 strlen (sals
.sals
[i
].symtab
->filename
));
6997 b
->line_number
= sals
.sals
[i
].line
;
6998 b
->address
= sals
.sals
[i
].pc
;
7000 /* Used to check for duplicates here, but that can
7001 cause trouble, as it doesn't check for disable
7006 /* Might be better to do this just once per breakpoint_re_set,
7007 rather than once for every breakpoint. */
7008 breakpoints_changed ();
7010 b
->section
= sals
.sals
[i
].section
;
7011 b
->enable
= save_enable
; /* Restore it, this worked. */
7014 /* Now that this is re-enabled, check_duplicates
7016 check_duplicates (b
->address
, b
->section
);
7023 case bp_hardware_watchpoint
:
7024 case bp_read_watchpoint
:
7025 case bp_access_watchpoint
:
7026 innermost_block
= NULL
;
7027 /* The issue arises of what context to evaluate this in. The
7028 same one as when it was set, but what does that mean when
7029 symbols have been re-read? We could save the filename and
7030 functionname, but if the context is more local than that, the
7031 best we could do would be something like how many levels deep
7032 and which index at that particular level, but that's going to
7033 be less stable than filenames or function names. */
7035 /* So for now, just use a global context. */
7038 b
->exp
= parse_expression (b
->exp_string
);
7039 b
->exp_valid_block
= innermost_block
;
7040 mark
= value_mark ();
7042 value_free (b
->val
);
7043 b
->val
= evaluate_expression (b
->exp
);
7044 release_value (b
->val
);
7045 if (VALUE_LAZY (b
->val
))
7046 value_fetch_lazy (b
->val
);
7048 if (b
->cond_string
!= NULL
)
7053 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7055 if (b
->enable
== enabled
)
7057 value_free_to_mark (mark
);
7059 case bp_catch_catch
:
7060 case bp_catch_throw
:
7062 /* We needn't really do anything to reset these, since the mask
7063 that requests them is unaffected by e.g., new libraries being
7066 case bp_catch_vfork
:
7071 printf_filtered ("Deleting unknown breakpoint type %d\n", b
->type
);
7073 /* Delete longjmp breakpoints, they will be reset later by
7074 breakpoint_re_set. */
7076 case bp_longjmp_resume
:
7077 delete_breakpoint (b
);
7080 /* This breakpoint is special, it's set up when the inferior
7081 starts and we really don't want to touch it. */
7082 case bp_shlib_event
:
7084 /* Like bp_shlib_event, this breakpoint type is special.
7085 Once it is set up, we do not want to touch it. */
7086 case bp_thread_event
:
7088 /* Keep temporary breakpoints, which can be encountered when we step
7089 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7090 Otherwise these should have been blown away via the cleanup chain
7091 or by breakpoint_init_inferior when we rerun the executable. */
7094 case bp_watchpoint_scope
:
7096 case bp_step_resume
:
7103 /* Re-set all breakpoints after symbols have been re-loaded. */
7105 breakpoint_re_set (void)
7107 struct breakpoint
*b
, *temp
;
7108 enum language save_language
;
7109 int save_input_radix
;
7110 static char message1
[] = "Error in re-setting breakpoint %d:\n";
7111 char message
[sizeof (message1
) + 30 /* slop */ ];
7113 save_language
= current_language
->la_language
;
7114 save_input_radix
= input_radix
;
7115 ALL_BREAKPOINTS_SAFE (b
, temp
)
7117 /* Format possible error msg */
7118 sprintf (message
, message1
, b
->number
);
7119 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7121 set_language (save_language
);
7122 input_radix
= save_input_radix
;
7124 #ifdef GET_LONGJMP_TARGET
7125 create_longjmp_breakpoint ("longjmp");
7126 create_longjmp_breakpoint ("_longjmp");
7127 create_longjmp_breakpoint ("siglongjmp");
7128 create_longjmp_breakpoint ("_siglongjmp");
7129 create_longjmp_breakpoint (NULL
);
7133 /* Took this out (temporarily at least), since it produces an extra
7134 blank line at startup. This messes up the gdbtests. -PB */
7135 /* Blank line to finish off all those mention() messages we just printed. */
7136 printf_filtered ("\n");
7140 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7141 If from_tty is nonzero, it prints a message to that effect,
7142 which ends with a period (no newline). */
7144 /* Reset the thread number of this breakpoint:
7146 - If the breakpoint is for all threads, leave it as-is.
7147 - Else, reset it to the current thread for inferior_ptid. */
7149 breakpoint_re_set_thread (struct breakpoint
*b
)
7151 if (b
->thread
!= -1)
7153 if (in_thread_list (inferior_ptid
))
7154 b
->thread
= pid_to_thread_id (inferior_ptid
);
7159 set_ignore_count (int bptnum
, int count
, int from_tty
)
7161 register struct breakpoint
*b
;
7167 if (b
->number
== bptnum
)
7169 b
->ignore_count
= count
;
7172 else if (count
== 0)
7173 printf_filtered ("Will stop next time breakpoint %d is reached.",
7175 else if (count
== 1)
7176 printf_filtered ("Will ignore next crossing of breakpoint %d.",
7179 printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
7181 breakpoints_changed ();
7185 error ("No breakpoint number %d.", bptnum
);
7188 /* Clear the ignore counts of all breakpoints. */
7190 breakpoint_clear_ignore_counts (void)
7192 struct breakpoint
*b
;
7195 b
->ignore_count
= 0;
7198 /* Command to set ignore-count of breakpoint N to COUNT. */
7201 ignore_command (char *args
, int from_tty
)
7207 error_no_arg ("a breakpoint number");
7209 num
= get_number (&p
);
7211 error ("bad breakpoint number: '%s'", args
);
7213 error ("Second argument (specified ignore-count) is missing.");
7215 set_ignore_count (num
,
7216 longest_to_int (value_as_long (parse_and_eval (p
))),
7218 printf_filtered ("\n");
7219 breakpoints_changed ();
7222 /* Call FUNCTION on each of the breakpoints
7223 whose numbers are given in ARGS. */
7226 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7228 register char *p
= args
;
7231 register struct breakpoint
*b
, *tmp
;
7235 error_no_arg ("one or more breakpoint numbers");
7242 num
= get_number_or_range (&p1
);
7245 warning ("bad breakpoint number at or near '%s'", p
);
7249 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7250 if (b
->number
== num
)
7252 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7255 if (related_breakpoint
)
7256 function (related_breakpoint
);
7260 printf_unfiltered ("No breakpoint number %d.\n", num
);
7267 disable_breakpoint (struct breakpoint
*bpt
)
7269 /* Never disable a watchpoint scope breakpoint; we want to
7270 hit them when we leave scope so we can delete both the
7271 watchpoint and its scope breakpoint at that time. */
7272 if (bpt
->type
== bp_watchpoint_scope
)
7275 /* You can't disable permanent breakpoints. */
7276 if (bpt
->enable
== permanent
)
7279 bpt
->enable
= disabled
;
7281 check_duplicates (bpt
->address
, bpt
->section
);
7283 if (modify_breakpoint_hook
)
7284 modify_breakpoint_hook (bpt
);
7285 breakpoint_modify_event (bpt
->number
);
7290 disable_command (char *args
, int from_tty
)
7292 register struct breakpoint
*bpt
;
7294 ALL_BREAKPOINTS (bpt
)
7298 warning ("attempted to disable apparently deleted breakpoint #%d?",
7303 case bp_catch_unload
:
7305 case bp_catch_vfork
:
7307 case bp_catch_catch
:
7308 case bp_catch_throw
:
7309 case bp_hardware_breakpoint
:
7311 case bp_hardware_watchpoint
:
7312 case bp_read_watchpoint
:
7313 case bp_access_watchpoint
:
7314 disable_breakpoint (bpt
);
7319 map_breakpoint_numbers (args
, disable_breakpoint
);
7323 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7325 struct frame_info
*save_selected_frame
= NULL
;
7326 int save_selected_frame_level
= -1;
7327 int target_resources_ok
, other_type_used
;
7330 if (bpt
->type
== bp_hardware_breakpoint
)
7333 i
= hw_breakpoint_used_count ();
7334 target_resources_ok
=
7335 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7337 if (target_resources_ok
== 0)
7338 error ("No hardware breakpoint support in the target.");
7339 else if (target_resources_ok
< 0)
7340 error ("Hardware breakpoints used exceeds limit.");
7343 if (bpt
->enable
!= permanent
)
7344 bpt
->enable
= enabled
;
7345 bpt
->disposition
= disposition
;
7346 check_duplicates (bpt
->address
, bpt
->section
);
7347 breakpoints_changed ();
7349 if (bpt
->type
== bp_watchpoint
||
7350 bpt
->type
== bp_hardware_watchpoint
||
7351 bpt
->type
== bp_read_watchpoint
||
7352 bpt
->type
== bp_access_watchpoint
)
7354 if (bpt
->exp_valid_block
!= NULL
)
7356 struct frame_info
*fr
=
7358 /* Ensure that we have the current frame. Else, this
7359 next query may pessimistically be answered as, "No,
7360 not within current scope". */
7361 get_current_frame ();
7362 fr
= find_frame_addr_in_frame_chain (bpt
->watchpoint_frame
);
7366 Cannot enable watchpoint %d because the block in which its expression\n\
7367 is valid is not currently in scope.\n", bpt
->number
);
7368 bpt
->enable
= disabled
;
7372 save_selected_frame
= selected_frame
;
7373 save_selected_frame_level
= selected_frame_level
;
7374 select_frame (fr
, -1);
7377 value_free (bpt
->val
);
7378 mark
= value_mark ();
7379 bpt
->val
= evaluate_expression (bpt
->exp
);
7380 release_value (bpt
->val
);
7381 if (VALUE_LAZY (bpt
->val
))
7382 value_fetch_lazy (bpt
->val
);
7384 if (bpt
->type
== bp_hardware_watchpoint
||
7385 bpt
->type
== bp_read_watchpoint
||
7386 bpt
->type
== bp_access_watchpoint
)
7388 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7389 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7391 /* Hack around 'unused var' error for some targets here */
7393 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7394 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7395 /* we can consider of type is bp_hardware_watchpoint, convert to
7396 bp_watchpoint in the following condition */
7397 if (target_resources_ok
< 0)
7400 Cannot enable watchpoint %d because target watch resources\n\
7401 have been allocated for other watchpoints.\n", bpt
->number
);
7402 bpt
->enable
= disabled
;
7403 value_free_to_mark (mark
);
7408 if (save_selected_frame_level
>= 0)
7409 select_frame (save_selected_frame
, save_selected_frame_level
);
7410 value_free_to_mark (mark
);
7412 if (modify_breakpoint_hook
)
7413 modify_breakpoint_hook (bpt
);
7414 breakpoint_modify_event (bpt
->number
);
7418 enable_breakpoint (struct breakpoint
*bpt
)
7420 do_enable_breakpoint (bpt
, bpt
->disposition
);
7423 /* The enable command enables the specified breakpoints (or all defined
7424 breakpoints) so they once again become (or continue to be) effective
7425 in stopping the inferior. */
7429 enable_command (char *args
, int from_tty
)
7431 register struct breakpoint
*bpt
;
7433 ALL_BREAKPOINTS (bpt
)
7437 warning ("attempted to enable apparently deleted breakpoint #%d?",
7442 case bp_catch_unload
:
7444 case bp_catch_vfork
:
7446 case bp_catch_catch
:
7447 case bp_catch_throw
:
7448 case bp_hardware_breakpoint
:
7450 case bp_hardware_watchpoint
:
7451 case bp_read_watchpoint
:
7452 case bp_access_watchpoint
:
7453 enable_breakpoint (bpt
);
7458 map_breakpoint_numbers (args
, enable_breakpoint
);
7462 enable_once_breakpoint (struct breakpoint
*bpt
)
7464 do_enable_breakpoint (bpt
, disable
);
7469 enable_once_command (char *args
, int from_tty
)
7471 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7475 enable_delete_breakpoint (struct breakpoint
*bpt
)
7477 do_enable_breakpoint (bpt
, del
);
7482 enable_delete_command (char *args
, int from_tty
)
7484 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7487 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7489 struct symtabs_and_lines
7490 decode_line_spec_1 (char *string
, int funfirstline
)
7492 struct symtabs_and_lines sals
;
7494 error ("Empty line specification.");
7495 if (default_breakpoint_valid
)
7496 sals
= decode_line_1 (&string
, funfirstline
,
7497 default_breakpoint_symtab
,
7498 default_breakpoint_line
,
7501 sals
= decode_line_1 (&string
, funfirstline
,
7502 (struct symtab
*) NULL
, 0, (char ***) NULL
);
7504 error ("Junk at end of line specification: %s", string
);
7509 _initialize_breakpoint (void)
7511 struct cmd_list_element
*c
;
7513 breakpoint_chain
= 0;
7514 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7515 before a breakpoint is set. */
7516 breakpoint_count
= 0;
7518 add_com ("ignore", class_breakpoint
, ignore_command
,
7519 "Set ignore-count of breakpoint number N to COUNT.\n\
7520 Usage is `ignore N COUNT'.");
7522 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7524 add_com ("commands", class_breakpoint
, commands_command
,
7525 "Set commands to be executed when a breakpoint is hit.\n\
7526 Give breakpoint number as argument after \"commands\".\n\
7527 With no argument, the targeted breakpoint is the last one set.\n\
7528 The commands themselves follow starting on the next line.\n\
7529 Type a line containing \"end\" to indicate the end of them.\n\
7530 Give \"silent\" as the first line to make the breakpoint silent;\n\
7531 then no output is printed when it is hit, except what the commands print.");
7533 add_com ("condition", class_breakpoint
, condition_command
,
7534 "Specify breakpoint number N to break only if COND is true.\n\
7535 Usage is `condition N COND', where N is an integer and COND is an\n\
7536 expression to be evaluated whenever breakpoint N is reached. ");
7538 add_com ("tbreak", class_breakpoint
, tbreak_command
,
7539 "Set a temporary breakpoint. Args like \"break\" command.\n\
7540 Like \"break\" except the breakpoint is only temporary,\n\
7541 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7542 by using \"enable delete\" on the breakpoint number.");
7543 add_com ("txbreak", class_breakpoint
, tbreak_at_finish_command
,
7544 "Set temporary breakpoint at procedure exit. Either there should\n\
7545 be no argument or the argument must be a depth.\n");
7547 add_com ("hbreak", class_breakpoint
, hbreak_command
,
7548 "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
7549 Like \"break\" except the breakpoint requires hardware support,\n\
7550 some target hardware may not have this support.");
7552 add_com ("thbreak", class_breakpoint
, thbreak_command
,
7553 "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
7554 Like \"hbreak\" except the breakpoint is only temporary,\n\
7555 so it will be deleted when hit.");
7557 add_prefix_cmd ("enable", class_breakpoint
, enable_command
,
7558 "Enable some breakpoints.\n\
7559 Give breakpoint numbers (separated by spaces) as arguments.\n\
7560 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7561 This is used to cancel the effect of the \"disable\" command.\n\
7562 With a subcommand you can enable temporarily.",
7563 &enablelist
, "enable ", 1, &cmdlist
);
7565 add_com ("ab", class_breakpoint
, enable_command
,
7566 "Enable some breakpoints.\n\
7567 Give breakpoint numbers (separated by spaces) as arguments.\n\
7568 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7569 This is used to cancel the effect of the \"disable\" command.\n\
7570 With a subcommand you can enable temporarily.");
7572 add_com_alias ("en", "enable", class_breakpoint
, 1);
7574 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
,
7575 "Enable some breakpoints.\n\
7576 Give breakpoint numbers (separated by spaces) as arguments.\n\
7577 This is used to cancel the effect of the \"disable\" command.\n\
7578 May be abbreviated to simply \"enable\".\n",
7579 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7581 add_cmd ("once", no_class
, enable_once_command
,
7582 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7583 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7586 add_cmd ("delete", no_class
, enable_delete_command
,
7587 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7588 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7591 add_cmd ("delete", no_class
, enable_delete_command
,
7592 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7593 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7596 add_cmd ("once", no_class
, enable_once_command
,
7597 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7598 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7601 add_prefix_cmd ("disable", class_breakpoint
, disable_command
,
7602 "Disable some breakpoints.\n\
7603 Arguments are breakpoint numbers with spaces in between.\n\
7604 To disable all breakpoints, give no argument.\n\
7605 A disabled breakpoint is not forgotten, but has no effect until reenabled.",
7606 &disablelist
, "disable ", 1, &cmdlist
);
7607 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7608 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7610 add_com ("sb", class_breakpoint
, disable_command
,
7611 "Disable some breakpoints.\n\
7612 Arguments are breakpoint numbers with spaces in between.\n\
7613 To disable all breakpoints, give no argument.\n\
7614 A disabled breakpoint is not forgotten, but has no effect until reenabled.");
7616 add_cmd ("breakpoints", class_alias
, disable_command
,
7617 "Disable some breakpoints.\n\
7618 Arguments are breakpoint numbers with spaces in between.\n\
7619 To disable all breakpoints, give no argument.\n\
7620 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7621 This command may be abbreviated \"disable\".",
7624 add_prefix_cmd ("delete", class_breakpoint
, delete_command
,
7625 "Delete some breakpoints or auto-display expressions.\n\
7626 Arguments are breakpoint numbers with spaces in between.\n\
7627 To delete all breakpoints, give no argument.\n\
7629 Also a prefix command for deletion of other GDB objects.\n\
7630 The \"unset\" command is also an alias for \"delete\".",
7631 &deletelist
, "delete ", 1, &cmdlist
);
7632 add_com_alias ("d", "delete", class_breakpoint
, 1);
7634 add_com ("db", class_breakpoint
, delete_command
,
7635 "Delete some breakpoints.\n\
7636 Arguments are breakpoint numbers with spaces in between.\n\
7637 To delete all breakpoints, give no argument.\n");
7639 add_cmd ("breakpoints", class_alias
, delete_command
,
7640 "Delete some breakpoints or auto-display expressions.\n\
7641 Arguments are breakpoint numbers with spaces in between.\n\
7642 To delete all breakpoints, give no argument.\n\
7643 This command may be abbreviated \"delete\".",
7646 add_com ("clear", class_breakpoint
, clear_command
,
7647 concat ("Clear breakpoint at specified line or function.\n\
7648 Argument may be line number, function name, or \"*\" and an address.\n\
7649 If line number is specified, all breakpoints in that line are cleared.\n\
7650 If function is specified, breakpoints at beginning of function are cleared.\n\
7651 If an address is specified, breakpoints at that address are cleared.\n\n",
7652 "With no argument, clears all breakpoints in the line that the selected frame\n\
7655 See also the \"delete\" command which clears breakpoints by number.", NULL
));
7657 add_com ("break", class_breakpoint
, break_command
,
7658 concat ("Set breakpoint at specified line or function.\n\
7659 Argument may be line number, function name, or \"*\" and an address.\n\
7660 If line number is specified, break at start of code for that line.\n\
7661 If function is specified, break at start of code for that function.\n\
7662 If an address is specified, break at that exact address.\n",
7663 "With no arg, uses current execution address of selected stack frame.\n\
7664 This is useful for breaking on return to a stack frame.\n\
7666 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7668 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7669 add_com_alias ("b", "break", class_run
, 1);
7670 add_com_alias ("br", "break", class_run
, 1);
7671 add_com_alias ("bre", "break", class_run
, 1);
7672 add_com_alias ("brea", "break", class_run
, 1);
7674 add_com ("xbreak", class_breakpoint
, break_at_finish_command
,
7675 concat ("Set breakpoint at procedure exit. \n\
7676 Argument may be function name, or \"*\" and an address.\n\
7677 If function is specified, break at end of code for that function.\n\
7678 If an address is specified, break at the end of the function that contains \n\
7679 that exact address.\n",
7680 "With no arg, uses current execution address of selected stack frame.\n\
7681 This is useful for breaking on return to a stack frame.\n\
7683 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7685 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7686 add_com_alias ("xb", "xbreak", class_breakpoint
, 1);
7687 add_com_alias ("xbr", "xbreak", class_breakpoint
, 1);
7688 add_com_alias ("xbre", "xbreak", class_breakpoint
, 1);
7689 add_com_alias ("xbrea", "xbreak", class_breakpoint
, 1);
7693 add_com_alias ("ba", "break", class_breakpoint
, 1);
7694 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
7695 add_com ("bx", class_breakpoint
, break_at_finish_at_depth_command
,
7696 "Set breakpoint at procedure exit. Either there should\n\
7697 be no argument or the argument must be a depth.\n");
7702 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
,
7703 "Break in function/address or break at a line in the current file.",
7704 &stoplist
, "stop ", 1, &cmdlist
);
7705 add_cmd ("in", class_breakpoint
, stopin_command
,
7706 "Break in function or address.\n", &stoplist
);
7707 add_cmd ("at", class_breakpoint
, stopat_command
,
7708 "Break at a line in the current file.\n", &stoplist
);
7709 add_com ("status", class_info
, breakpoints_info
,
7710 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7711 The \"Type\" column indicates one of:\n\
7712 \tbreakpoint - normal breakpoint\n\
7713 \twatchpoint - watchpoint\n\
7714 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7715 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7716 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7717 address and file/line number respectively.\n\n",
7718 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7719 are set to the address of the last breakpoint listed.\n\n\
7720 Convenience variable \"$bpnum\" contains the number of the last\n\
7721 breakpoint set.", NULL
));
7724 add_info ("breakpoints", breakpoints_info
,
7725 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7726 The \"Type\" column indicates one of:\n\
7727 \tbreakpoint - normal breakpoint\n\
7728 \twatchpoint - watchpoint\n\
7729 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7730 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7731 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7732 address and file/line number respectively.\n\n",
7733 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7734 are set to the address of the last breakpoint listed.\n\n\
7735 Convenience variable \"$bpnum\" contains the number of the last\n\
7736 breakpoint set.", NULL
));
7739 add_com ("lb", class_breakpoint
, breakpoints_info
,
7740 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7741 The \"Type\" column indicates one of:\n\
7742 \tbreakpoint - normal breakpoint\n\
7743 \twatchpoint - watchpoint\n\
7744 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7745 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7746 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7747 address and file/line number respectively.\n\n",
7748 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7749 are set to the address of the last breakpoint listed.\n\n\
7750 Convenience variable \"$bpnum\" contains the number of the last\n\
7751 breakpoint set.", NULL
));
7753 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
,
7754 concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
7755 The \"Type\" column indicates one of:\n\
7756 \tbreakpoint - normal breakpoint\n\
7757 \twatchpoint - watchpoint\n\
7758 \tlongjmp - internal breakpoint used to step through longjmp()\n\
7759 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
7760 \tuntil - internal breakpoint used by the \"until\" command\n\
7761 \tfinish - internal breakpoint used by the \"finish\" command\n",
7762 "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7763 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7764 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7765 address and file/line number respectively.\n\n",
7766 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7767 are set to the address of the last breakpoint listed.\n\n\
7768 Convenience variable \"$bpnum\" contains the number of the last\n\
7769 breakpoint set.", NULL
),
7770 &maintenanceinfolist
);
7772 add_com ("catch", class_breakpoint
, catch_command
,
7773 "Set catchpoints to catch events.\n\
7774 Raised signals may be caught:\n\
7775 \tcatch signal - all signals\n\
7776 \tcatch signal <signame> - a particular signal\n\
7777 Raised exceptions may be caught:\n\
7778 \tcatch throw - all exceptions, when thrown\n\
7779 \tcatch throw <exceptname> - a particular exception, when thrown\n\
7780 \tcatch catch - all exceptions, when caught\n\
7781 \tcatch catch <exceptname> - a particular exception, when caught\n\
7782 Thread or process events may be caught:\n\
7783 \tcatch thread_start - any threads, just after creation\n\
7784 \tcatch thread_exit - any threads, just before expiration\n\
7785 \tcatch thread_join - any threads, just after joins\n\
7786 Process events may be caught:\n\
7787 \tcatch start - any processes, just after creation\n\
7788 \tcatch exit - any processes, just before expiration\n\
7789 \tcatch fork - calls to fork()\n\
7790 \tcatch vfork - calls to vfork()\n\
7791 \tcatch exec - calls to exec()\n\
7792 Dynamically-linked library events may be caught:\n\
7793 \tcatch load - loads of any library\n\
7794 \tcatch load <libname> - loads of a particular library\n\
7795 \tcatch unload - unloads of any library\n\
7796 \tcatch unload <libname> - unloads of a particular library\n\
7797 The act of your program's execution stopping may also be caught:\n\
7799 C++ exceptions may be caught:\n\
7800 \tcatch throw - all exceptions, when thrown\n\
7801 \tcatch catch - all exceptions, when caught\n\
7803 Do \"help set follow-fork-mode\" for info on debugging your program\n\
7804 after a fork or vfork is caught.\n\n\
7805 Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
7807 add_com ("tcatch", class_breakpoint
, tcatch_command
,
7808 "Set temporary catchpoints to catch events.\n\
7809 Args like \"catch\" command.\n\
7810 Like \"catch\" except the catchpoint is only temporary,\n\
7811 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
7812 by using \"enable delete\" on the catchpoint number.");
7814 add_com ("watch", class_breakpoint
, watch_command
,
7815 "Set a watchpoint for an expression.\n\
7816 A watchpoint stops execution of your program whenever the value of\n\
7817 an expression changes.");
7819 add_com ("rwatch", class_breakpoint
, rwatch_command
,
7820 "Set a read watchpoint for an expression.\n\
7821 A watchpoint stops execution of your program whenever the value of\n\
7822 an expression is read.");
7824 add_com ("awatch", class_breakpoint
, awatch_command
,
7825 "Set a watchpoint for an expression.\n\
7826 A watchpoint stops execution of your program whenever the value of\n\
7827 an expression is either read or written.");
7829 add_info ("watchpoints", breakpoints_info
,
7830 "Synonym for ``info breakpoints''.");
7833 c
= add_set_cmd ("can-use-hw-watchpoints", class_support
, var_zinteger
,
7834 (char *) &can_use_hw_watchpoints
,
7835 "Set debugger's willingness to use watchpoint hardware.\n\
7836 If zero, gdb will not use hardware for new watchpoints, even if\n\
7837 such is available. (However, any hardware watchpoints that were\n\
7838 created before setting this to nonzero, will continue to use watchpoint\n\
7841 add_show_from_set (c
, &showlist
);
7843 can_use_hw_watchpoints
= 1;