1 /* Everything about breakpoints, for GDB.
2 Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 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"
43 #include "gdb-events.h"
45 /* Prototypes for local functions. */
47 static void until_break_command_continuation (struct continuation_arg
*arg
);
50 catch_command_1
PARAMS ((char *, int, int));
53 enable_delete_command
PARAMS ((char *, int));
56 enable_delete_breakpoint
PARAMS ((struct breakpoint
*));
59 enable_once_command
PARAMS ((char *, int));
62 enable_once_breakpoint
PARAMS ((struct breakpoint
*));
65 disable_command
PARAMS ((char *, int));
68 enable_command
PARAMS ((char *, int));
71 map_breakpoint_numbers
PARAMS ((char *, void (*)(struct breakpoint
*)));
74 ignore_command
PARAMS ((char *, int));
76 static int breakpoint_re_set_one
PARAMS ((PTR
));
79 clear_command
PARAMS ((char *, int));
82 catch_command
PARAMS ((char *, int));
85 handle_gnu_4_16_catch_command
PARAMS ((char *, int, int));
87 static struct symtabs_and_lines
88 get_catch_sals
PARAMS ((int));
91 watch_command
PARAMS ((char *, int));
94 can_use_hardware_watchpoint
PARAMS ((struct value
*));
96 static void break_at_finish_command
PARAMS ((char *, int));
97 static void break_at_finish_at_depth_command
PARAMS ((char *, int));
100 tbreak_command
PARAMS ((char *, int));
102 static void tbreak_at_finish_command
PARAMS ((char *, int));
105 break_command_1
PARAMS ((char *, int, int));
108 mention
PARAMS ((struct breakpoint
*));
111 set_raw_breakpoint
PARAMS ((struct symtab_and_line
));
114 check_duplicates
PARAMS ((CORE_ADDR
, asection
*));
117 describe_other_breakpoints
PARAMS ((CORE_ADDR
, asection
*));
120 breakpoints_info
PARAMS ((char *, int));
123 breakpoint_1
PARAMS ((int, int));
126 bpstat_alloc
PARAMS ((struct breakpoint
*, bpstat
));
128 static int breakpoint_cond_eval
PARAMS ((PTR
));
131 cleanup_executing_breakpoints
PARAMS ((PTR
));
134 commands_command
PARAMS ((char *, int));
137 condition_command
PARAMS ((char *, int));
140 get_number_trailer
PARAMS ((char **, int));
143 set_breakpoint_count
PARAMS ((int));
146 static struct breakpoint
*
147 create_temp_exception_breakpoint
PARAMS ((CORE_ADDR
));
158 remove_breakpoint
PARAMS ((struct breakpoint
*, insertion_state_t
));
160 static enum print_stop_action print_it_typical
PARAMS ((bpstat
));
162 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
166 enum exception_event_kind kind
;
169 args_for_catchpoint_enable
;
171 static int watchpoint_check
PARAMS ((PTR
));
173 static int cover_target_enable_exception_callback
PARAMS ((PTR
));
175 static void maintenance_info_breakpoints
PARAMS ((char *, int));
177 #ifdef GET_LONGJMP_TARGET
178 static void create_longjmp_breakpoint
PARAMS ((char *));
181 static int hw_breakpoint_used_count
PARAMS ((void));
183 static int hw_watchpoint_used_count
PARAMS ((enum bptype
, int *));
185 static void hbreak_command
PARAMS ((char *, int));
187 static void thbreak_command
PARAMS ((char *, int));
189 static void watch_command_1
PARAMS ((char *, int, int));
191 static void rwatch_command
PARAMS ((char *, int));
193 static void awatch_command
PARAMS ((char *, int));
195 static void do_enable_breakpoint
PARAMS ((struct breakpoint
*, enum bpdisp
));
197 static void solib_load_unload_1
PARAMS ((char *hookname
,
201 enum bptype bp_kind
));
203 static void create_fork_vfork_event_catchpoint
PARAMS ((int tempflag
,
205 enum bptype bp_kind
));
207 static void break_at_finish_at_depth_command_1
PARAMS ((char *arg
,
211 static void break_at_finish_command_1
PARAMS ((char *arg
,
215 static void stop_command
PARAMS ((char *arg
, int from_tty
));
217 static void stopin_command
PARAMS ((char *arg
, int from_tty
));
219 static void stopat_command
PARAMS ((char *arg
, int from_tty
));
221 static char *ep_find_event_name_end
PARAMS ((char *arg
));
223 static char *ep_parse_optional_if_clause
PARAMS ((char **arg
));
225 static char *ep_parse_optional_filename
PARAMS ((char **arg
));
227 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
228 static void catch_exec_command_1
PARAMS ((char *arg
, int tempflag
,
232 static void create_exception_catchpoint
233 PARAMS ((int tempflag
, char *cond_string
,
234 enum exception_event_kind ex_event
,
235 struct symtab_and_line
* sal
));
237 static void catch_exception_command_1
238 PARAMS ((enum exception_event_kind ex_event
,
239 char *arg
, int tempflag
, int from_tty
));
241 static void tcatch_command
PARAMS ((char *arg
, int from_tty
));
243 static void ep_skip_leading_whitespace
PARAMS ((char **s
));
245 /* Prototypes for exported functions. */
248 awatch_command
PARAMS ((char *, int));
251 do_enable_breakpoint
PARAMS ((struct breakpoint
*, enum bpdisp
));
253 /* If FALSE, gdb will not use hardware support for watchpoints, even
254 if such is available. */
255 static int can_use_hw_watchpoints
;
257 void _initialize_breakpoint
PARAMS ((void));
259 void set_breakpoint_count
PARAMS ((int));
261 extern int addressprint
; /* Print machine addresses? */
263 #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD)
264 static int internal_breakpoint_number
= -1;
267 /* Are we executing breakpoint commands? */
268 static int executing_breakpoint_commands
;
270 /* Walk the following statement or block through all breakpoints.
271 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
274 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
276 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
277 for (B = breakpoint_chain; \
278 B ? (TMP=B->next, 1): 0; \
281 /* True if SHIFT_INST_REGS defined, false otherwise. */
283 int must_shift_inst_regs
=
284 #if defined(SHIFT_INST_REGS)
291 /* True if breakpoint hit counts should be displayed in breakpoint info. */
293 int show_breakpoint_hit_counts
= 1;
295 /* Chain of all breakpoints defined. */
297 struct breakpoint
*breakpoint_chain
;
299 /* Number of last breakpoint made. */
301 int breakpoint_count
;
303 /* Pointer to current exception event record */
304 static struct exception_event_record
*current_exception_event
;
306 /* Indicator of whether exception catchpoints should be nuked
307 between runs of a program */
308 int exception_catchpoints_are_fragile
= 0;
310 /* Indicator of when exception catchpoints set-up should be
311 reinitialized -- e.g. when program is re-run */
312 int exception_support_initialized
= 0;
314 /* This function returns a pointer to the string representation of the
315 pathname of the dynamically-linked library that has just been
318 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
319 or undefined results are guaranteed.
321 This string's contents are only valid immediately after the
322 inferior has stopped in the dynamic linker hook, and becomes
323 invalid as soon as the inferior is continued. Clients should make
324 a copy of this string if they wish to continue the inferior and
325 then access the string. */
327 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
328 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
331 /* This function returns a pointer to the string representation of the
332 pathname of the dynamically-linked library that has just been
335 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
336 TRUE, or undefined results are guaranteed.
338 This string's contents are only valid immediately after the
339 inferior has stopped in the dynamic linker hook, and becomes
340 invalid as soon as the inferior is continued. Clients should make
341 a copy of this string if they wish to continue the inferior and
342 then access the string. */
344 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
345 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
348 /* This function is called by the "catch load" command. It allows the
349 debugger to be notified by the dynamic linker when a specified
350 library file (or any library file, if filename is NULL) is loaded. */
352 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
353 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
354 error ("catch of library loads not yet implemented on this platform")
357 /* This function is called by the "catch unload" command. It allows
358 the debugger to be notified by the dynamic linker when a specified
359 library file (or any library file, if filename is NULL) is
362 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
363 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
364 error ("catch of library unloads not yet implemented on this platform")
367 /* Set breakpoint count to NUM. */
370 set_breakpoint_count (num
)
373 breakpoint_count
= num
;
374 set_internalvar (lookup_internalvar ("bpnum"),
375 value_from_longest (builtin_type_int
, (LONGEST
) num
));
378 /* Used in run_command to zero the hit count when a new run starts. */
381 clear_breakpoint_hit_counts ()
383 struct breakpoint
*b
;
389 /* Default address, symtab and line to put a breakpoint at
390 for "break" command with no arg.
391 if default_breakpoint_valid is zero, the other three are
392 not valid, and "break" with no arg is an error.
394 This set by print_stack_frame, which calls set_default_breakpoint. */
396 int default_breakpoint_valid
;
397 CORE_ADDR default_breakpoint_address
;
398 struct symtab
*default_breakpoint_symtab
;
399 int default_breakpoint_line
;
401 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
402 Advance *PP after the string and any trailing whitespace.
404 Currently the string can either be a number or "$" followed by the name
405 of a convenience variable. Making it an expression wouldn't work well
406 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
408 TRAILER is a character which can be found after the number; most
409 commonly this is `-'. If you don't want a trailer, use \0. */
411 get_number_trailer (pp
, trailer
)
415 int retval
= 0; /* default */
419 /* Empty line means refer to the last breakpoint. */
420 return breakpoint_count
;
423 /* Make a copy of the name, so we can null-terminate it
424 to pass to lookup_internalvar(). */
429 while (isalnum (*p
) || *p
== '_')
431 varname
= (char *) alloca (p
- start
+ 1);
432 strncpy (varname
, start
, p
- start
);
433 varname
[p
- start
] = '\0';
434 val
= value_of_internalvar (lookup_internalvar (varname
));
435 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_INT
)
436 retval
= (int) value_as_long (val
);
439 printf_filtered ("Convenience variable must have integer value.\n");
447 while (*p
>= '0' && *p
<= '9')
450 /* There is no number here. (e.g. "cond a == b"). */
452 /* Skip non-numeric token */
453 while (*p
&& !isspace((int) *p
))
455 /* Return zero, which caller must interpret as error. */
461 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
463 /* Trailing junk: return 0 and let caller print error msg. */
464 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
475 /* Like get_number_trailer, but don't allow a trailer. */
480 return get_number_trailer (pp
, '\0');
483 /* Parse a number or a range.
484 * A number will be of the form handled by get_number.
485 * A range will be of the form <number1> - <number2>, and
486 * will represent all the integers between number1 and number2,
489 * While processing a range, this fuction is called iteratively;
490 * At each call it will return the next value in the range.
492 * At the beginning of parsing a range, the char pointer PP will
493 * be advanced past <number1> and left pointing at the '-' token.
494 * Subsequent calls will not advance the pointer until the range
495 * is completed. The call that completes the range will advance
496 * pointer PP past <number2>.
500 get_number_or_range (pp
)
503 static int last_retval
, end_value
;
504 static char *end_ptr
;
505 static int in_range
= 0;
509 /* Default case: pp is pointing either to a solo number,
510 or to the first number of a range. */
511 last_retval
= get_number_trailer (pp
, '-');
516 /* This is the start of a range (<number1> - <number2>).
517 Skip the '-', parse and remember the second number,
518 and also remember the end of the final token. */
522 while (isspace ((int) *end_ptr
))
523 end_ptr
++; /* skip white space */
524 end_value
= get_number (temp
);
525 if (end_value
< last_retval
)
527 error ("inverted range");
529 else if (end_value
== last_retval
)
531 /* degenerate range (number1 == number2). Advance the
532 token pointer so that the range will be treated as a
541 error ("negative value");
544 /* pp points to the '-' that betokens a range. All
545 number-parsing has already been done. Return the next
546 integer value (one greater than the saved previous value).
547 Do not advance the token pointer 'pp' until the end of range
550 if (++last_retval
== end_value
)
552 /* End of range reached; advance token pointer. */
562 /* condition N EXP -- set break condition of breakpoint N to EXP. */
565 condition_command (arg
, from_tty
)
569 register struct breakpoint
*b
;
574 error_no_arg ("breakpoint number");
577 bnum
= get_number (&p
);
579 error ("Bad breakpoint argument: '%s'", arg
);
582 if (b
->number
== bnum
)
586 free ((PTR
) b
->cond
);
589 if (b
->cond_string
!= NULL
)
590 free ((PTR
) b
->cond_string
);
595 b
->cond_string
= NULL
;
597 printf_filtered ("Breakpoint %d now unconditional.\n", bnum
);
602 /* I don't know if it matters whether this is the string the user
603 typed in or the decompiled expression. */
604 b
->cond_string
= savestring (arg
, strlen (arg
));
605 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->address
), 0);
607 error ("Junk at end of expression");
609 breakpoints_changed ();
613 error ("No breakpoint number %d.", bnum
);
618 commands_command (arg
, from_tty
)
622 register struct breakpoint
*b
;
625 struct command_line
*l
;
627 /* If we allowed this, we would have problems with when to
628 free the storage, if we change the commands currently
631 if (executing_breakpoint_commands
)
632 error ("Can't use the \"commands\" command among a breakpoint's commands.");
635 bnum
= get_number (&p
);
638 error ("Unexpected extra arguments following breakpoint number.");
641 if (b
->number
== bnum
)
645 "Type commands for when breakpoint %d is hit, one per line.",
647 l
= read_command_lines (tmpbuf
, from_tty
);
648 free_command_lines (&b
->commands
);
650 breakpoints_changed ();
653 error ("No breakpoint number %d.", bnum
);
656 /* Like target_read_memory() but if breakpoints are inserted, return
657 the shadow contents instead of the breakpoints themselves.
659 Read "memory data" from whatever target or inferior we have.
660 Returns zero if successful, errno value if not. EIO is used
661 for address out of bounds. If breakpoints are inserted, returns
662 shadow contents, not the breakpoints themselves. From breakpoint.c. */
665 read_memory_nobpt (memaddr
, myaddr
, len
)
671 struct breakpoint
*b
;
672 CORE_ADDR bp_addr
= 0;
675 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
676 /* No breakpoints on this machine. */
677 return target_read_memory (memaddr
, myaddr
, len
);
681 if (b
->type
== bp_none
)
682 warning ("reading through apparently deleted breakpoint #%d?",
685 /* memory breakpoint? */
686 if (b
->type
== bp_watchpoint
687 || b
->type
== bp_hardware_watchpoint
688 || b
->type
== bp_read_watchpoint
689 || b
->type
== bp_access_watchpoint
)
694 /* Addresses and length of the part of the breakpoint that
696 /* XXXX The m68k, sh and h8300 have different local and remote
697 breakpoint values. BREAKPOINT_FROM_PC still manages to
698 correctly determine the breakpoints memory address and size
699 for these targets. */
700 bp_addr
= b
->address
;
702 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
707 if (bp_addr
+ bp_size
<= memaddr
)
708 /* The breakpoint is entirely before the chunk of memory we
711 if (bp_addr
>= memaddr
+ len
)
712 /* The breakpoint is entirely after the chunk of memory we are
715 /* Copy the breakpoint from the shadow contents, and recurse for
716 the things before and after. */
718 /* Offset within shadow_contents. */
721 if (bp_addr
< memaddr
)
723 /* Only copy the second part of the breakpoint. */
724 bp_size
-= memaddr
- bp_addr
;
725 bptoffset
= memaddr
- bp_addr
;
729 if (bp_addr
+ bp_size
> memaddr
+ len
)
731 /* Only copy the first part of the breakpoint. */
732 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
735 memcpy (myaddr
+ bp_addr
- memaddr
,
736 b
->shadow_contents
+ bptoffset
, bp_size
);
738 if (bp_addr
> memaddr
)
740 /* Copy the section of memory before the breakpoint. */
741 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
746 if (bp_addr
+ bp_size
< memaddr
+ len
)
748 /* Copy the section of memory after the breakpoint. */
749 status
= read_memory_nobpt
751 myaddr
+ bp_addr
+ bp_size
- memaddr
,
752 memaddr
+ len
- (bp_addr
+ bp_size
));
759 /* Nothing overlaps. Just call read_memory_noerr. */
760 return target_read_memory (memaddr
, myaddr
, len
);
764 /* insert_breakpoints is used when starting or continuing the program.
765 remove_breakpoints is used when the program stops.
766 Both return zero if successful,
767 or an `errno' value if could not write the inferior. */
770 insert_breakpoints ()
772 register struct breakpoint
*b
, *temp
;
773 int return_val
= 0; /* return success code. */
775 int disabled_breaks
= 0;
777 static char message1
[] = "Error inserting catchpoint %d:\n";
778 static char message
[sizeof (message1
) + 30];
781 ALL_BREAKPOINTS_SAFE (b
, temp
)
783 if (b
->enable
== permanent
)
784 /* Permanent breakpoints cannot be inserted or removed. */
786 else if (b
->type
!= bp_watchpoint
787 && b
->type
!= bp_hardware_watchpoint
788 && b
->type
!= bp_read_watchpoint
789 && b
->type
!= bp_access_watchpoint
790 && b
->type
!= bp_catch_fork
791 && b
->type
!= bp_catch_vfork
792 && b
->type
!= bp_catch_exec
793 && b
->type
!= bp_catch_throw
794 && b
->type
!= bp_catch_catch
795 && b
->enable
!= disabled
796 && b
->enable
!= shlib_disabled
797 && b
->enable
!= call_disabled
801 if (b
->type
== bp_hardware_breakpoint
)
802 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
805 /* Check to see if breakpoint is in an overlay section;
806 if so, we should set the breakpoint at the LMA address.
807 Only if the section is currently mapped should we ALSO
808 set a break at the VMA address. */
809 if (overlay_debugging
&& b
->section
&&
810 section_is_overlay (b
->section
))
814 addr
= overlay_unmapped_address (b
->address
, b
->section
);
815 val
= target_insert_breakpoint (addr
, b
->shadow_contents
);
816 /* This would be the time to check val, to see if the
817 breakpoint write to the load address succeeded.
818 However, this might be an ordinary occurrance, eg. if
819 the unmapped overlay is in ROM. */
820 val
= 0; /* in case unmapped address failed */
821 if (section_is_mapped (b
->section
))
822 val
= target_insert_breakpoint (b
->address
,
825 else /* ordinary (non-overlay) address */
826 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
830 /* Can't set the breakpoint. */
831 #if defined (DISABLE_UNSETTABLE_BREAK)
832 if (DISABLE_UNSETTABLE_BREAK (b
->address
))
834 /* See also: disable_breakpoints_in_shlibs. */
836 b
->enable
= shlib_disabled
;
837 if (!disabled_breaks
)
839 target_terminal_ours_for_output ();
840 warning ("Cannot insert breakpoint %d:", b
->number
);
841 warning ("Temporarily disabling shared library breakpoints:");
844 warning ("breakpoint #%d ", b
->number
);
849 target_terminal_ours_for_output ();
850 warning ("Cannot insert breakpoint %d:", b
->number
);
851 #ifdef ONE_PROCESS_WRITETEXT
852 warning ("The same program may be running in another process.");
854 memory_error (val
, b
->address
); /* which bombs us out */
861 return_val
= val
; /* remember failure */
863 else if (ep_is_exception_catchpoint (b
)
864 && b
->enable
!= disabled
865 && b
->enable
!= shlib_disabled
866 && b
->enable
!= call_disabled
871 /* If we get here, we must have a callback mechanism for exception
872 events -- with g++ style embedded label support, we insert
873 ordinary breakpoints and not catchpoints. */
874 /* Format possible error message */
875 sprintf (message
, message1
, b
->number
);
877 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
880 /* Couldn't set breakpoint for some reason */
881 target_terminal_ours_for_output ();
882 warning ("Cannot insert catchpoint %d; disabling it.",
884 b
->enable
= disabled
;
888 /* Bp set, now make sure callbacks are enabled */
890 args_for_catchpoint_enable args
;
891 args
.kind
= b
->type
== bp_catch_catch
?
892 EX_EVENT_CATCH
: EX_EVENT_THROW
;
894 val
= catch_errors (cover_target_enable_exception_callback
,
896 message
, RETURN_MASK_ALL
);
897 if (val
!= 0 && val
!= -1)
901 /* Check if something went wrong; val == 0 can be ignored */
904 /* something went wrong */
905 target_terminal_ours_for_output ();
906 warning ("Cannot insert catchpoint %d; disabling it.",
908 b
->enable
= disabled
;
913 return_val
= val
; /* remember failure */
916 else if ((b
->type
== bp_hardware_watchpoint
||
917 b
->type
== bp_read_watchpoint
||
918 b
->type
== bp_access_watchpoint
)
919 && b
->enable
== enabled
923 struct frame_info
*saved_frame
;
924 int saved_level
, within_current_scope
;
925 value_ptr mark
= value_mark ();
928 /* Save the current frame and level so we can restore it after
929 evaluating the watchpoint expression on its own frame. */
930 saved_frame
= selected_frame
;
931 saved_level
= selected_frame_level
;
933 /* Determine if the watchpoint is within scope. */
934 if (b
->exp_valid_block
== NULL
)
935 within_current_scope
= 1;
938 struct frame_info
*fi
;
940 /* There might be no current frame at this moment if we are
941 resuming from a step over a breakpoint.
942 Set up current frame before trying to find the watchpoint
944 get_current_frame ();
945 fi
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
946 within_current_scope
= (fi
!= NULL
);
947 if (within_current_scope
)
948 select_frame (fi
, -1);
951 if (within_current_scope
)
953 /* Evaluate the expression and cut the chain of values
954 produced off from the value chain.
956 Make sure the value returned isn't lazy; we use
957 laziness to determine what memory GDB actually needed
958 in order to compute the value of the expression. */
959 v
= evaluate_expression (b
->exp
);
961 value_release_to_mark (mark
);
966 /* Look at each value on the value chain. */
967 for (; v
; v
= v
->next
)
969 /* If it's a memory location, and GDB actually needed
970 its contents to evaluate the expression, then we
972 if (VALUE_LVAL (v
) == lval_memory
978 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
979 len
= TYPE_LENGTH (VALUE_TYPE (v
));
981 if (b
->type
== bp_read_watchpoint
)
983 else if (b
->type
== bp_access_watchpoint
)
986 val
= target_insert_watchpoint (addr
, len
, type
);
995 /* Failure to insert a watchpoint on any memory value in the
996 value chain brings us here. */
999 remove_breakpoint (b
, mark_uninserted
);
1000 warning ("Could not insert hardware watchpoint %d.",
1007 printf_filtered ("Hardware watchpoint %d deleted", b
->number
);
1008 printf_filtered ("because the program has left the block \n");
1009 printf_filtered ("in which its expression is valid.\n");
1010 if (b
->related_breakpoint
)
1011 b
->related_breakpoint
->disposition
= del_at_next_stop
;
1012 b
->disposition
= del_at_next_stop
;
1015 /* Restore the frame and level. */
1016 if ((saved_frame
!= selected_frame
) ||
1017 (saved_level
!= selected_frame_level
))
1018 select_and_print_frame (saved_frame
, saved_level
);
1021 return_val
= val
; /* remember failure */
1023 else if ((b
->type
== bp_catch_fork
1024 || b
->type
== bp_catch_vfork
1025 || b
->type
== bp_catch_exec
)
1026 && b
->enable
== enabled
1034 val
= target_insert_fork_catchpoint (inferior_pid
);
1036 case bp_catch_vfork
:
1037 val
= target_insert_vfork_catchpoint (inferior_pid
);
1040 val
= target_insert_exec_catchpoint (inferior_pid
);
1043 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1048 target_terminal_ours_for_output ();
1049 warning ("Cannot insert catchpoint %d.", b
->number
);
1055 return_val
= val
; /* remember failure */
1064 remove_breakpoints ()
1066 register struct breakpoint
*b
;
1073 val
= remove_breakpoint (b
, mark_uninserted
);
1082 reattach_breakpoints (pid
)
1085 register struct breakpoint
*b
;
1087 int saved_inferior_pid
= inferior_pid
;
1089 /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
1090 inferior_pid
= pid
; /* Because remove_breakpoint will use this global. */
1095 remove_breakpoint (b
, mark_inserted
);
1096 if (b
->type
== bp_hardware_breakpoint
)
1097 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
1099 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
1102 inferior_pid
= saved_inferior_pid
;
1107 inferior_pid
= saved_inferior_pid
;
1112 update_breakpoints_after_exec ()
1114 struct breakpoint
*b
;
1115 struct breakpoint
*temp
;
1117 /* Doing this first prevents the badness of having delete_breakpoint()
1118 write a breakpoint's current "shadow contents" to lift the bp. That
1119 shadow is NOT valid after an exec()! */
1120 mark_breakpoints_out ();
1122 ALL_BREAKPOINTS_SAFE (b
, temp
)
1124 /* Solib breakpoints must be explicitly reset after an exec(). */
1125 if (b
->type
== bp_shlib_event
)
1127 delete_breakpoint (b
);
1131 /* Step-resume breakpoints are meaningless after an exec(). */
1132 if (b
->type
== bp_step_resume
)
1134 delete_breakpoint (b
);
1138 /* Ditto the sigtramp handler breakpoints. */
1139 if (b
->type
== bp_through_sigtramp
)
1141 delete_breakpoint (b
);
1145 /* Ditto the exception-handling catchpoints. */
1146 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1148 delete_breakpoint (b
);
1152 /* Don't delete an exec catchpoint, because else the inferior
1153 won't stop when it ought!
1155 Similarly, we probably ought to keep vfork catchpoints, 'cause
1156 on this target, we may not be able to stop when the vfork is
1157 seen, but only when the subsequent exec is seen. (And because
1158 deleting fork catchpoints here but not vfork catchpoints will
1159 seem mysterious to users, keep those too.)
1161 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1162 target address field, if any, is sufficient to have it be reset
1163 automagically. Certainly on HP-UX that's true. */
1164 if ((b
->type
== bp_catch_exec
) ||
1165 (b
->type
== bp_catch_vfork
) ||
1166 (b
->type
== bp_catch_fork
))
1168 b
->address
= (CORE_ADDR
) NULL
;
1172 /* bp_finish is a special case. The only way we ought to be able
1173 to see one of these when an exec() has happened, is if the user
1174 caught a vfork, and then said "finish". Ordinarily a finish just
1175 carries them to the call-site of the current callee, by setting
1176 a temporary bp there and resuming. But in this case, the finish
1177 will carry them entirely through the vfork & exec.
1179 We don't want to allow a bp_finish to remain inserted now. But
1180 we can't safely delete it, 'cause finish_command has a handle to
1181 the bp on a bpstat, and will later want to delete it. There's a
1182 chance (and I've seen it happen) that if we delete the bp_finish
1183 here, that its storage will get reused by the time finish_command
1184 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1185 We really must allow finish_command to delete a bp_finish.
1187 In the absense of a general solution for the "how do we know
1188 it's safe to delete something others may have handles to?"
1189 problem, what we'll do here is just uninsert the bp_finish, and
1190 let finish_command delete it.
1192 (We know the bp_finish is "doomed" in the sense that it's
1193 momentary, and will be deleted as soon as finish_command sees
1194 the inferior stopped. So it doesn't matter that the bp's
1195 address is probably bogus in the new a.out, unlike e.g., the
1196 solib breakpoints.) */
1198 if (b
->type
== bp_finish
)
1203 /* Without a symbolic address, we have little hope of the
1204 pre-exec() address meaning the same thing in the post-exec()
1206 if (b
->addr_string
== NULL
)
1208 delete_breakpoint (b
);
1212 /* If this breakpoint has survived the above battery of checks, then
1213 it must have a symbolic address. Be sure that it gets reevaluated
1214 to a target address, rather than reusing the old evaluation. */
1215 b
->address
= (CORE_ADDR
) NULL
;
1220 detach_breakpoints (pid
)
1223 register struct breakpoint
*b
;
1225 int saved_inferior_pid
= inferior_pid
;
1227 if (pid
== inferior_pid
)
1228 error ("Cannot detach breakpoints of inferior_pid");
1230 /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
1231 inferior_pid
= pid
; /* Because remove_breakpoint will use this global. */
1236 val
= remove_breakpoint (b
, mark_inserted
);
1239 inferior_pid
= saved_inferior_pid
;
1244 inferior_pid
= saved_inferior_pid
;
1249 remove_breakpoint (b
, is
)
1250 struct breakpoint
*b
;
1251 insertion_state_t is
;
1255 if (b
->enable
== permanent
)
1256 /* Permanent breakpoints cannot be inserted or removed. */
1259 if (b
->type
== bp_none
)
1260 warning ("attempted to remove apparently deleted breakpoint #%d?",
1263 if (b
->type
!= bp_watchpoint
1264 && b
->type
!= bp_hardware_watchpoint
1265 && b
->type
!= bp_read_watchpoint
1266 && b
->type
!= bp_access_watchpoint
1267 && b
->type
!= bp_catch_fork
1268 && b
->type
!= bp_catch_vfork
1269 && b
->type
!= bp_catch_exec
1270 && b
->type
!= bp_catch_catch
1271 && b
->type
!= bp_catch_throw
)
1273 if (b
->type
== bp_hardware_breakpoint
)
1274 val
= target_remove_hw_breakpoint (b
->address
, b
->shadow_contents
);
1277 /* Check to see if breakpoint is in an overlay section;
1278 if so, we should remove the breakpoint at the LMA address.
1279 If that is not equal to the raw address, then we should
1280 presumable remove the breakpoint there as well. */
1281 if (overlay_debugging
&& b
->section
&&
1282 section_is_overlay (b
->section
))
1286 addr
= overlay_unmapped_address (b
->address
, b
->section
);
1287 val
= target_remove_breakpoint (addr
, b
->shadow_contents
);
1288 /* This would be the time to check val, to see if the
1289 shadow breakpoint write to the load address succeeded.
1290 However, this might be an ordinary occurrance, eg. if
1291 the unmapped overlay is in ROM. */
1292 val
= 0; /* in case unmapped address failed */
1293 if (section_is_mapped (b
->section
))
1294 val
= target_remove_breakpoint (b
->address
,
1295 b
->shadow_contents
);
1297 else /* ordinary (non-overlay) address */
1298 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1302 b
->inserted
= (is
== mark_inserted
);
1304 else if ((b
->type
== bp_hardware_watchpoint
||
1305 b
->type
== bp_read_watchpoint
||
1306 b
->type
== bp_access_watchpoint
)
1307 && b
->enable
== enabled
1312 b
->inserted
= (is
== mark_inserted
);
1313 /* Walk down the saved value chain. */
1314 for (v
= b
->val_chain
; v
; v
= v
->next
)
1316 /* For each memory reference remove the watchpoint
1318 if (VALUE_LVAL (v
) == lval_memory
1319 && ! VALUE_LAZY (v
))
1324 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
1325 len
= TYPE_LENGTH (VALUE_TYPE (v
));
1327 if (b
->type
== bp_read_watchpoint
)
1329 else if (b
->type
== bp_access_watchpoint
)
1332 val
= target_remove_watchpoint (addr
, len
, type
);
1338 /* Failure to remove any of the hardware watchpoints comes here. */
1339 if ((is
== mark_uninserted
) && (b
->inserted
))
1340 warning ("Could not remove hardware watchpoint %d.",
1343 /* Free the saved value chain. We will construct a new one
1344 the next time the watchpoint is inserted. */
1345 for (v
= b
->val_chain
; v
; v
= n
)
1350 b
->val_chain
= NULL
;
1352 else if ((b
->type
== bp_catch_fork
||
1353 b
->type
== bp_catch_vfork
||
1354 b
->type
== bp_catch_exec
)
1355 && b
->enable
== enabled
1362 val
= target_remove_fork_catchpoint (inferior_pid
);
1364 case bp_catch_vfork
:
1365 val
= target_remove_vfork_catchpoint (inferior_pid
);
1368 val
= target_remove_exec_catchpoint (inferior_pid
);
1371 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1376 b
->inserted
= (is
== mark_inserted
);
1378 else if ((b
->type
== bp_catch_catch
||
1379 b
->type
== bp_catch_throw
)
1380 && b
->enable
== enabled
1384 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1387 b
->inserted
= (is
== mark_inserted
);
1389 else if (ep_is_exception_catchpoint (b
)
1390 && b
->inserted
/* sometimes previous insert doesn't happen */
1391 && b
->enable
== enabled
1395 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1399 b
->inserted
= (is
== mark_inserted
);
1405 /* Clear the "inserted" flag in all breakpoints. */
1408 mark_breakpoints_out ()
1410 register struct breakpoint
*b
;
1416 /* Clear the "inserted" flag in all breakpoints and delete any
1417 breakpoints which should go away between runs of the program.
1419 Plus other such housekeeping that has to be done for breakpoints
1422 Note: this function gets called at the end of a run (by
1423 generic_mourn_inferior) and when a run begins (by
1424 init_wait_for_inferior). */
1429 breakpoint_init_inferior (context
)
1430 enum inf_context context
;
1432 register struct breakpoint
*b
, *temp
;
1433 static int warning_needed
= 0;
1435 ALL_BREAKPOINTS_SAFE (b
, temp
)
1442 case bp_watchpoint_scope
:
1444 /* If the call dummy breakpoint is at the entry point it will
1445 cause problems when the inferior is rerun, so we better
1448 Also get rid of scope breakpoints. */
1449 delete_breakpoint (b
);
1453 case bp_hardware_watchpoint
:
1454 case bp_read_watchpoint
:
1455 case bp_access_watchpoint
:
1457 /* Likewise for watchpoints on local expressions. */
1458 if (b
->exp_valid_block
!= NULL
)
1459 delete_breakpoint (b
);
1462 /* Likewise for exception catchpoints in dynamic-linked
1463 executables where required */
1464 if (ep_is_exception_catchpoint (b
) &&
1465 exception_catchpoints_are_fragile
)
1468 delete_breakpoint (b
);
1474 if (exception_catchpoints_are_fragile
)
1475 exception_support_initialized
= 0;
1477 /* Don't issue the warning unless it's really needed... */
1478 if (warning_needed
&& (context
!= inf_exited
))
1480 warning ("Exception catchpoints from last run were deleted.");
1481 warning ("You must reinsert them explicitly.");
1486 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1487 exists at PC. It returns ordinary_breakpoint_here if it's an
1488 ordinary breakpoint, or permanent_breakpoint_here if it's a
1489 permanent breakpoint.
1490 - When continuing from a location with an ordinary breakpoint, we
1491 actually single step once before calling insert_breakpoints.
1492 - When continuing from a localion with a permanent breakpoint, we
1493 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1494 the target, to advance the PC past the breakpoint. */
1496 enum breakpoint_here
1497 breakpoint_here_p (pc
)
1500 register struct breakpoint
*b
;
1501 int any_breakpoint_here
= 0;
1504 if ((b
->enable
== enabled
1505 || b
->enable
== permanent
)
1506 && b
->address
== pc
) /* bp is enabled and matches pc */
1508 if (overlay_debugging
&&
1509 section_is_overlay (b
->section
) &&
1510 !section_is_mapped (b
->section
))
1511 continue; /* unmapped overlay -- can't be a match */
1512 else if (b
->enable
== permanent
)
1513 return permanent_breakpoint_here
;
1515 any_breakpoint_here
= 1;
1518 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1522 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1523 but it only returns true if there is actually a breakpoint inserted
1527 breakpoint_inserted_here_p (pc
)
1530 register struct breakpoint
*b
;
1534 && b
->address
== pc
) /* bp is inserted and matches pc */
1536 if (overlay_debugging
&&
1537 section_is_overlay (b
->section
) &&
1538 !section_is_mapped (b
->section
))
1539 continue; /* unmapped overlay -- can't be a match */
1547 /* Return nonzero if FRAME is a dummy frame. We can't use
1548 PC_IN_CALL_DUMMY because figuring out the saved SP would take too
1549 much time, at least using get_saved_register on the 68k. This
1550 means that for this function to work right a port must use the
1551 bp_call_dummy breakpoint. */
1554 frame_in_dummy (frame
)
1555 struct frame_info
*frame
;
1557 struct breakpoint
*b
;
1562 if (USE_GENERIC_DUMMY_FRAMES
)
1563 return generic_pc_in_call_dummy (frame
->pc
, frame
->frame
, frame
->frame
);
1567 if (b
->type
== bp_call_dummy
1568 && b
->frame
== frame
->frame
1569 /* We need to check the PC as well as the frame on the sparc,
1570 for signals.exp in the testsuite. */
1573 - SIZEOF_CALL_DUMMY_WORDS
/ sizeof (LONGEST
) * REGISTER_SIZE
))
1574 && frame
->pc
<= b
->address
)
1580 /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC
1581 is valid for process/thread PID. */
1584 breakpoint_thread_match (pc
, pid
)
1588 struct breakpoint
*b
;
1591 thread
= pid_to_thread_id (pid
);
1594 if (b
->enable
!= disabled
1595 && b
->enable
!= shlib_disabled
1596 && b
->enable
!= call_disabled
1598 && (b
->thread
== -1 || b
->thread
== thread
))
1600 if (overlay_debugging
&&
1601 section_is_overlay (b
->section
) &&
1602 !section_is_mapped (b
->section
))
1603 continue; /* unmapped overlay -- can't be a match */
1612 /* bpstat stuff. External routines' interfaces are documented
1616 ep_is_catchpoint (ep
)
1617 struct breakpoint
*ep
;
1620 (ep
->type
== bp_catch_load
)
1621 || (ep
->type
== bp_catch_unload
)
1622 || (ep
->type
== bp_catch_fork
)
1623 || (ep
->type
== bp_catch_vfork
)
1624 || (ep
->type
== bp_catch_exec
)
1625 || (ep
->type
== bp_catch_catch
)
1626 || (ep
->type
== bp_catch_throw
)
1629 /* ??rehrauer: Add more kinds here, as are implemented... */
1634 ep_is_shlib_catchpoint (ep
)
1635 struct breakpoint
*ep
;
1638 (ep
->type
== bp_catch_load
)
1639 || (ep
->type
== bp_catch_unload
)
1644 ep_is_exception_catchpoint (ep
)
1645 struct breakpoint
*ep
;
1648 (ep
->type
== bp_catch_catch
)
1649 || (ep
->type
== bp_catch_throw
)
1653 /* Clear a bpstat so that it says we are not at any breakpoint.
1654 Also free any storage that is part of a bpstat. */
1669 if (p
->old_val
!= NULL
)
1670 value_free (p
->old_val
);
1677 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1678 is part of the bpstat is copied as well. */
1686 bpstat retval
= NULL
;
1691 for (; bs
!= NULL
; bs
= bs
->next
)
1693 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1694 memcpy (tmp
, bs
, sizeof (*tmp
));
1696 /* This is the first thing in the chain. */
1706 /* Find the bpstat associated with this breakpoint */
1709 bpstat_find_breakpoint (bsp
, breakpoint
)
1711 struct breakpoint
*breakpoint
;
1716 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1718 if (bsp
->breakpoint_at
== breakpoint
)
1724 /* Find a step_resume breakpoint associated with this bpstat.
1725 (If there are multiple step_resume bp's on the list, this function
1726 will arbitrarily pick one.)
1728 It is an error to use this function if BPSTAT doesn't contain a
1729 step_resume breakpoint.
1731 See wait_for_inferior's use of this function. */
1733 bpstat_find_step_resume_breakpoint (bsp
)
1737 error ("Internal error (bpstat_find_step_resume_breakpoint)");
1739 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1741 if ((bsp
->breakpoint_at
!= NULL
) &&
1742 (bsp
->breakpoint_at
->type
== bp_step_resume
))
1743 return bsp
->breakpoint_at
;
1746 error ("Internal error (no step_resume breakpoint found)");
1750 /* Return the breakpoint number of the first breakpoint we are stopped
1751 at. *BSP upon return is a bpstat which points to the remaining
1752 breakpoints stopped at (but which is not guaranteed to be good for
1753 anything but further calls to bpstat_num).
1754 Return 0 if passed a bpstat which does not indicate any breakpoints. */
1760 struct breakpoint
*b
;
1763 return 0; /* No more breakpoint values */
1766 b
= (*bsp
)->breakpoint_at
;
1767 *bsp
= (*bsp
)->next
;
1769 return -1; /* breakpoint that's been deleted since */
1771 return b
->number
; /* We have its number */
1775 /* Modify BS so that the actions will not be performed. */
1778 bpstat_clear_actions (bs
)
1781 for (; bs
!= NULL
; bs
= bs
->next
)
1783 bs
->commands
= NULL
;
1784 if (bs
->old_val
!= NULL
)
1786 value_free (bs
->old_val
);
1792 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1795 cleanup_executing_breakpoints (ignore
)
1798 executing_breakpoint_commands
= 0;
1801 /* Execute all the commands associated with all the breakpoints at this
1802 location. Any of these commands could cause the process to proceed
1803 beyond this point, etc. We look out for such changes by checking
1804 the global "breakpoint_proceeded" after each command. */
1807 bpstat_do_actions (bsp
)
1811 struct cleanup
*old_chain
;
1812 struct command_line
*cmd
;
1814 /* Avoid endless recursion if a `source' command is contained
1816 if (executing_breakpoint_commands
)
1819 executing_breakpoint_commands
= 1;
1820 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
1823 /* Note that (as of this writing), our callers all appear to
1824 be passing us the address of global stop_bpstat. And, if
1825 our calls to execute_control_command cause the inferior to
1826 proceed, that global (and hence, *bsp) will change.
1828 We must be careful to not touch *bsp unless the inferior
1829 has not proceeded. */
1831 /* This pointer will iterate over the list of bpstat's. */
1834 breakpoint_proceeded
= 0;
1835 for (; bs
!= NULL
; bs
= bs
->next
)
1840 execute_control_command (cmd
);
1842 if (breakpoint_proceeded
)
1847 if (breakpoint_proceeded
)
1848 /* The inferior is proceeded by the command; bomb out now.
1849 The bpstat chain has been blown away by wait_for_inferior.
1850 But since execution has stopped again, there is a new bpstat
1851 to look at, so start over. */
1854 bs
->commands
= NULL
;
1857 executing_breakpoint_commands
= 0;
1858 discard_cleanups (old_chain
);
1861 /* This is the normal print function for a bpstat. In the future,
1862 much of this logic could (should?) be moved to bpstat_stop_status,
1863 by having it set different print_it values.
1865 Current scheme: When we stop, bpstat_print() is called. It loops
1866 through the bpstat list of things causing this stop, calling the
1867 print_bp_stop_message function on each one. The behavior of the
1868 print_bp_stop_message function depends on the print_it field of
1869 bpstat. If such field so indicates, call this function here.
1871 Return values from this routine (ultimately used by bpstat_print()
1872 and normal_stop() to decide what to do):
1873 PRINT_NOTHING: Means we already printed all we needed to print,
1874 don't print anything else.
1875 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
1876 that something to be followed by a location.
1877 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
1878 that something to be followed by a location.
1879 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
1882 static enum print_stop_action
1883 print_it_typical (bs
)
1886 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
1887 which has since been deleted. */
1888 if (bs
->breakpoint_at
== NULL
)
1889 return PRINT_UNKNOWN
;
1891 switch (bs
->breakpoint_at
->type
)
1894 case bp_hardware_breakpoint
:
1895 /* I think the user probably only wants to see one breakpoint
1896 number, not all of them. */
1897 annotate_breakpoint (bs
->breakpoint_at
->number
);
1898 printf_filtered ("\nBreakpoint %d, ", bs
->breakpoint_at
->number
);
1899 return PRINT_SRC_AND_LOC
;
1902 case bp_shlib_event
:
1903 /* Did we stop because the user set the stop_on_solib_events
1904 variable? (If so, we report this as a generic, "Stopped due
1905 to shlib event" message.) */
1906 printf_filtered ("Stopped due to shared library event\n");
1907 return PRINT_NOTHING
;
1911 annotate_catchpoint (bs
->breakpoint_at
->number
);
1912 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1913 printf_filtered ("loaded");
1914 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1915 return PRINT_SRC_AND_LOC
;
1918 case bp_catch_unload
:
1919 annotate_catchpoint (bs
->breakpoint_at
->number
);
1920 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1921 printf_filtered ("unloaded");
1922 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1923 return PRINT_SRC_AND_LOC
;
1927 annotate_catchpoint (bs
->breakpoint_at
->number
);
1928 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1929 printf_filtered ("forked");
1930 printf_filtered (" process %d), ",
1931 bs
->breakpoint_at
->forked_inferior_pid
);
1932 return PRINT_SRC_AND_LOC
;
1935 case bp_catch_vfork
:
1936 annotate_catchpoint (bs
->breakpoint_at
->number
);
1937 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1938 printf_filtered ("vforked");
1939 printf_filtered (" process %d), ",
1940 bs
->breakpoint_at
->forked_inferior_pid
);
1941 return PRINT_SRC_AND_LOC
;
1945 annotate_catchpoint (bs
->breakpoint_at
->number
);
1946 printf_filtered ("\nCatchpoint %d (exec'd %s), ",
1947 bs
->breakpoint_at
->number
,
1948 bs
->breakpoint_at
->exec_pathname
);
1949 return PRINT_SRC_AND_LOC
;
1952 case bp_catch_catch
:
1953 if (current_exception_event
&&
1954 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
1956 annotate_catchpoint (bs
->breakpoint_at
->number
);
1957 printf_filtered ("\nCatchpoint %d (exception caught), ",
1958 bs
->breakpoint_at
->number
);
1959 printf_filtered ("throw location ");
1960 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1961 printf_filtered ("%s:%d",
1962 CURRENT_EXCEPTION_THROW_FILE
,
1963 CURRENT_EXCEPTION_THROW_LINE
);
1965 printf_filtered ("unknown");
1967 printf_filtered (", catch location ");
1968 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1969 printf_filtered ("%s:%d",
1970 CURRENT_EXCEPTION_CATCH_FILE
,
1971 CURRENT_EXCEPTION_CATCH_LINE
);
1973 printf_filtered ("unknown");
1975 printf_filtered ("\n");
1976 /* don't bother to print location frame info */
1977 return PRINT_SRC_ONLY
;
1981 /* really throw, some other bpstat will handle it */
1982 return PRINT_UNKNOWN
;
1986 case bp_catch_throw
:
1987 if (current_exception_event
&&
1988 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
1990 annotate_catchpoint (bs
->breakpoint_at
->number
);
1991 printf_filtered ("\nCatchpoint %d (exception thrown), ",
1992 bs
->breakpoint_at
->number
);
1993 printf_filtered ("throw location ");
1994 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1995 printf_filtered ("%s:%d",
1996 CURRENT_EXCEPTION_THROW_FILE
,
1997 CURRENT_EXCEPTION_THROW_LINE
);
1999 printf_filtered ("unknown");
2001 printf_filtered (", catch location ");
2002 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2003 printf_filtered ("%s:%d",
2004 CURRENT_EXCEPTION_CATCH_FILE
,
2005 CURRENT_EXCEPTION_CATCH_LINE
);
2007 printf_filtered ("unknown");
2009 printf_filtered ("\n");
2010 /* don't bother to print location frame info */
2011 return PRINT_SRC_ONLY
;
2015 /* really catch, some other bpstat will handle it */
2016 return PRINT_UNKNOWN
;
2021 case bp_hardware_watchpoint
:
2022 if (bs
->old_val
!= NULL
)
2024 annotate_watchpoint (bs
->breakpoint_at
->number
);
2025 mention (bs
->breakpoint_at
);
2026 printf_filtered ("\nOld value = ");
2027 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2028 printf_filtered ("\nNew value = ");
2029 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2030 Val_pretty_default
);
2031 printf_filtered ("\n");
2032 value_free (bs
->old_val
);
2035 /* More than one watchpoint may have been triggered. */
2036 return PRINT_UNKNOWN
;
2039 case bp_read_watchpoint
:
2040 mention (bs
->breakpoint_at
);
2041 printf_filtered ("\nValue = ");
2042 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2043 Val_pretty_default
);
2044 printf_filtered ("\n");
2045 return PRINT_UNKNOWN
;
2048 case bp_access_watchpoint
:
2049 if (bs
->old_val
!= NULL
)
2051 annotate_watchpoint (bs
->breakpoint_at
->number
);
2052 mention (bs
->breakpoint_at
);
2053 printf_filtered ("\nOld value = ");
2054 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2055 value_free (bs
->old_val
);
2057 printf_filtered ("\nNew value = ");
2061 mention (bs
->breakpoint_at
);
2062 printf_filtered ("\nValue = ");
2064 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2065 Val_pretty_default
);
2066 printf_filtered ("\n");
2067 return PRINT_UNKNOWN
;
2069 /* Fall through, we don't deal with these types of breakpoints
2076 case bp_longjmp_resume
:
2077 case bp_step_resume
:
2078 case bp_through_sigtramp
:
2079 case bp_watchpoint_scope
:
2082 return PRINT_UNKNOWN
;
2086 /* Generic routine for printing messages indicating why we
2087 stopped. The behavior of this function depends on the value
2088 'print_it' in the bpstat structure. Under some circumstances we
2089 may decide not to print anything here and delegate the task to
2092 static enum print_stop_action
2093 print_bp_stop_message (bpstat bs
)
2095 switch (bs
->print_it
)
2098 /* Nothing should be printed for this bpstat entry. */
2099 return PRINT_UNKNOWN
;
2103 /* We still want to print the frame, but we already printed the
2104 relevant messages. */
2105 return PRINT_SRC_AND_LOC
;
2108 case print_it_normal
:
2109 /* Normal case, we handle everything in print_it_typical. */
2110 return print_it_typical (bs
);
2113 internal_error ("print_bp_stop_message: unrecognized enum value");
2118 /* Print a message indicating what happened. This is called from
2119 normal_stop(). The input to this routine is the head of the bpstat
2120 list - a list of the eventpoints that caused this stop. This
2121 routine calls the generic print routine for printing a message
2122 about reasons for stopping. This will print (for example) the
2123 "Breakpoint n," part of the output. The return value of this
2126 PRINT_UNKNOWN: Means we printed nothing
2127 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2128 code to print the location. An example is
2129 "Breakpoint 1, " which should be followed by
2131 PRINT_SRC_ONLY: Means we printed something, but there is no need
2132 to also print the location part of the message.
2133 An example is the catch/throw messages, which
2134 don't require a location appended to the end.
2135 PRINT_NOTHING: We have done some printing and we don't need any
2136 further info to be printed.*/
2138 enum print_stop_action
2144 /* Maybe another breakpoint in the chain caused us to stop.
2145 (Currently all watchpoints go on the bpstat whether hit or not.
2146 That probably could (should) be changed, provided care is taken
2147 with respect to bpstat_explains_signal). */
2148 for (; bs
; bs
= bs
->next
)
2150 val
= print_bp_stop_message (bs
);
2151 if (val
== PRINT_SRC_ONLY
2152 || val
== PRINT_SRC_AND_LOC
2153 || val
== PRINT_NOTHING
)
2157 /* We reached the end of the chain, or we got a null BS to start
2158 with and nothing was printed. */
2159 return PRINT_UNKNOWN
;
2162 /* Evaluate the expression EXP and return 1 if value is zero.
2163 This is used inside a catch_errors to evaluate the breakpoint condition.
2164 The argument is a "struct expression *" that has been cast to char * to
2165 make it pass through catch_errors. */
2168 breakpoint_cond_eval (exp
)
2171 value_ptr mark
= value_mark ();
2172 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2173 value_free_to_mark (mark
);
2177 /* Allocate a new bpstat and chain it to the current one. */
2180 bpstat_alloc (b
, cbs
)
2181 register struct breakpoint
*b
;
2182 bpstat cbs
; /* Current "bs" value */
2186 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2188 bs
->breakpoint_at
= b
;
2189 /* If the condition is false, etc., don't do the commands. */
2190 bs
->commands
= NULL
;
2192 bs
->print_it
= print_it_normal
;
2196 /* Possible return values for watchpoint_check (this can't be an enum
2197 because of check_errors). */
2198 /* The watchpoint has been deleted. */
2199 #define WP_DELETED 1
2200 /* The value has changed. */
2201 #define WP_VALUE_CHANGED 2
2202 /* The value has not changed. */
2203 #define WP_VALUE_NOT_CHANGED 3
2205 #define BP_TEMPFLAG 1
2206 #define BP_HARDWAREFLAG 2
2208 /* Check watchpoint condition. */
2211 watchpoint_check (p
)
2214 bpstat bs
= (bpstat
) p
;
2215 struct breakpoint
*b
;
2216 struct frame_info
*fr
;
2217 int within_current_scope
;
2219 b
= bs
->breakpoint_at
;
2221 if (b
->exp_valid_block
== NULL
)
2222 within_current_scope
= 1;
2225 /* There is no current frame at this moment. If we're going to have
2226 any chance of handling watchpoints on local variables, we'll need
2227 the frame chain (so we can determine if we're in scope). */
2228 reinit_frame_cache ();
2229 fr
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
2230 within_current_scope
= (fr
!= NULL
);
2231 if (within_current_scope
)
2232 /* If we end up stopping, the current frame will get selected
2233 in normal_stop. So this call to select_frame won't affect
2235 select_frame (fr
, -1);
2238 if (within_current_scope
)
2240 /* We use value_{,free_to_}mark because it could be a
2241 *long* time before we return to the command level and
2242 call free_all_values. We can't call free_all_values because
2243 we might be in the middle of evaluating a function call. */
2245 value_ptr mark
= value_mark ();
2246 value_ptr new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2247 if (!value_equal (b
->val
, new_val
))
2249 release_value (new_val
);
2250 value_free_to_mark (mark
);
2251 bs
->old_val
= b
->val
;
2253 /* We will stop here */
2254 return WP_VALUE_CHANGED
;
2258 /* Nothing changed, don't do anything. */
2259 value_free_to_mark (mark
);
2260 /* We won't stop here */
2261 return WP_VALUE_NOT_CHANGED
;
2266 /* This seems like the only logical thing to do because
2267 if we temporarily ignored the watchpoint, then when
2268 we reenter the block in which it is valid it contains
2269 garbage (in the case of a function, it may have two
2270 garbage values, one before and one after the prologue).
2271 So we can't even detect the first assignment to it and
2272 watch after that (since the garbage may or may not equal
2273 the first value assigned). */
2275 Watchpoint %d deleted because the program has left the block in\n\
2276 which its expression is valid.\n", bs
->breakpoint_at
->number
);
2277 if (b
->related_breakpoint
)
2278 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2279 b
->disposition
= del_at_next_stop
;
2285 /* Get a bpstat associated with having just stopped at address *PC
2286 and frame address CORE_ADDRESS. Update *PC to point at the
2287 breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
2288 if this is known to not be a real breakpoint (it could still be a
2289 watchpoint, though). */
2291 /* Determine whether we stopped at a breakpoint, etc, or whether we
2292 don't understand this stop. Result is a chain of bpstat's such that:
2294 if we don't understand the stop, the result is a null pointer.
2296 if we understand why we stopped, the result is not null.
2298 Each element of the chain refers to a particular breakpoint or
2299 watchpoint at which we have stopped. (We may have stopped for
2300 several reasons concurrently.)
2302 Each element of the chain has valid next, breakpoint_at,
2303 commands, FIXME??? fields. */
2306 bpstat_stop_status (pc
, not_a_breakpoint
)
2308 int not_a_breakpoint
;
2310 register struct breakpoint
*b
, *temp
;
2312 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2313 int real_breakpoint
= 0;
2314 /* Root of the chain of bpstat's */
2315 struct bpstats root_bs
[1];
2316 /* Pointer to the last thing in the chain currently. */
2317 bpstat bs
= root_bs
;
2318 static char message1
[] =
2319 "Error evaluating expression for watchpoint %d\n";
2320 char message
[sizeof (message1
) + 30 /* slop */ ];
2322 /* Get the address where the breakpoint would have been. */
2323 bp_addr
= *pc
- (not_a_breakpoint
&& !SOFTWARE_SINGLE_STEP_P
?
2324 0 : DECR_PC_AFTER_BREAK
);
2326 ALL_BREAKPOINTS_SAFE (b
, temp
)
2328 if (b
->enable
== disabled
2329 || b
->enable
== shlib_disabled
2330 || b
->enable
== call_disabled
)
2333 if (b
->type
!= bp_watchpoint
2334 && b
->type
!= bp_hardware_watchpoint
2335 && b
->type
!= bp_read_watchpoint
2336 && b
->type
!= bp_access_watchpoint
2337 && b
->type
!= bp_hardware_breakpoint
2338 && b
->type
!= bp_catch_fork
2339 && b
->type
!= bp_catch_vfork
2340 && b
->type
!= bp_catch_exec
2341 && b
->type
!= bp_catch_catch
2342 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2343 if (b
->address
!= bp_addr
|| /* address doesn't match or */
2344 (overlay_debugging
&& /* overlay doesn't match */
2345 section_is_overlay (b
->section
) &&
2346 !section_is_mapped (b
->section
)))
2349 if (b
->type
== bp_hardware_breakpoint
2350 && b
->address
!= (*pc
- DECR_PC_AFTER_HW_BREAK
))
2353 /* Is this a catchpoint of a load or unload? If so, did we
2354 get a load or unload of the specified library? If not,
2356 if ((b
->type
== bp_catch_load
)
2357 #if defined(SOLIB_HAVE_LOAD_EVENT)
2358 && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid
)
2359 || ((b
->dll_pathname
!= NULL
)
2360 && (strcmp (b
->dll_pathname
,
2361 SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid
))
2367 if ((b
->type
== bp_catch_unload
)
2368 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2369 && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid
)
2370 || ((b
->dll_pathname
!= NULL
)
2371 && (strcmp (b
->dll_pathname
,
2372 SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid
))
2378 if ((b
->type
== bp_catch_fork
)
2379 && !target_has_forked (inferior_pid
, &b
->forked_inferior_pid
))
2382 if ((b
->type
== bp_catch_vfork
)
2383 && !target_has_vforked (inferior_pid
, &b
->forked_inferior_pid
))
2386 if ((b
->type
== bp_catch_exec
)
2387 && !target_has_execd (inferior_pid
, &b
->exec_pathname
))
2390 if (ep_is_exception_catchpoint (b
) &&
2391 !(current_exception_event
= target_get_current_exception_event ()))
2394 /* Come here if it's a watchpoint, or if the break address matches */
2396 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2398 /* Watchpoints may change this, if not found to have triggered. */
2402 sprintf (message
, message1
, b
->number
);
2403 if (b
->type
== bp_watchpoint
||
2404 b
->type
== bp_hardware_watchpoint
)
2406 switch (catch_errors (watchpoint_check
, bs
, message
,
2410 /* We've already printed what needs to be printed. */
2411 bs
->print_it
= print_it_done
;
2414 case WP_VALUE_CHANGED
:
2418 case WP_VALUE_NOT_CHANGED
:
2420 bs
->print_it
= print_it_noop
;
2422 /* Don't consider this a hit. */
2429 /* Error from catch_errors. */
2430 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2431 if (b
->related_breakpoint
)
2432 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2433 b
->disposition
= del_at_next_stop
;
2434 /* We've already printed what needs to be printed. */
2435 bs
->print_it
= print_it_done
;
2441 else if (b
->type
== bp_read_watchpoint
||
2442 b
->type
== bp_access_watchpoint
)
2448 addr
= target_stopped_data_address ();
2451 for (v
= b
->val_chain
; v
; v
= v
->next
)
2453 if (VALUE_LVAL (v
) == lval_memory
2454 && ! VALUE_LAZY (v
))
2458 vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
2459 /* Exact match not required. Within range is sufficient.
2461 if (addr
>= vaddr
&&
2462 addr
< vaddr
+ TYPE_LENGTH (VALUE_TYPE (v
)))
2467 switch (catch_errors (watchpoint_check
, bs
, message
,
2471 /* We've already printed what needs to be printed. */
2472 bs
->print_it
= print_it_done
;
2475 case WP_VALUE_CHANGED
:
2476 case WP_VALUE_NOT_CHANGED
:
2483 /* Error from catch_errors. */
2484 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2485 if (b
->related_breakpoint
)
2486 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2487 b
->disposition
= del_at_next_stop
;
2488 /* We've already printed what needs to be printed. */
2489 bs
->print_it
= print_it_done
;
2492 else /* found == 0 */
2494 /* This is a case where some watchpoint(s) triggered,
2495 but not at the address of this watchpoint (FOUND
2496 was left zero). So don't print anything for this
2498 bs
->print_it
= print_it_noop
;
2505 /* By definition, an encountered breakpoint is a triggered
2509 real_breakpoint
= 1;
2512 if (b
->frame
&& b
->frame
!= (get_current_frame ())->frame
&&
2513 (b
->type
== bp_step_resume
&&
2514 (INNER_THAN (get_current_frame ()->frame
, b
->frame
))))
2518 int value_is_zero
= 0;
2522 /* Need to select the frame, with all that implies
2523 so that the conditions will have the right context. */
2524 select_frame (get_current_frame (), 0);
2526 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2527 "Error in testing breakpoint condition:\n",
2529 /* FIXME-someday, should give breakpoint # */
2532 if (b
->cond
&& value_is_zero
)
2535 /* Don't consider this a hit. */
2538 else if (b
->ignore_count
> 0)
2541 annotate_ignore_count_change ();
2546 /* We will stop here */
2547 if (b
->disposition
== disable
)
2548 b
->enable
= disabled
;
2549 bs
->commands
= b
->commands
;
2553 (STREQ ("silent", bs
->commands
->line
) ||
2554 (xdb_commands
&& STREQ ("Q", bs
->commands
->line
))))
2556 bs
->commands
= bs
->commands
->next
;
2561 /* Print nothing for this entry if we dont stop or if we dont print. */
2562 if (bs
->stop
== 0 || bs
->print
== 0)
2563 bs
->print_it
= print_it_noop
;
2566 bs
->next
= NULL
; /* Terminate the chain */
2567 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2569 if (real_breakpoint
&& bs
)
2571 if (bs
->breakpoint_at
->type
== bp_hardware_breakpoint
)
2573 if (DECR_PC_AFTER_HW_BREAK
!= 0)
2575 *pc
= *pc
- DECR_PC_AFTER_HW_BREAK
;
2581 if (DECR_PC_AFTER_BREAK
!= 0 || must_shift_inst_regs
)
2584 #if defined (SHIFT_INST_REGS)
2586 #else /* No SHIFT_INST_REGS. */
2588 #endif /* No SHIFT_INST_REGS. */
2593 /* The value of a hardware watchpoint hasn't changed, but the
2594 intermediate memory locations we are watching may have. */
2595 if (bs
&& !bs
->stop
&&
2596 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
2597 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
2598 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
2600 remove_breakpoints ();
2601 insert_breakpoints ();
2606 /* Tell what to do about this bpstat. */
2611 /* Classify each bpstat as one of the following. */
2614 /* This bpstat element has no effect on the main_action. */
2617 /* There was a watchpoint, stop but don't print. */
2620 /* There was a watchpoint, stop and print. */
2623 /* There was a breakpoint but we're not stopping. */
2626 /* There was a breakpoint, stop but don't print. */
2629 /* There was a breakpoint, stop and print. */
2632 /* We hit the longjmp breakpoint. */
2635 /* We hit the longjmp_resume breakpoint. */
2638 /* We hit the step_resume breakpoint. */
2641 /* We hit the through_sigtramp breakpoint. */
2644 /* We hit the shared library event breakpoint. */
2647 /* We caught a shared library event. */
2650 /* This is just used to count how many enums there are. */
2654 /* Here is the table which drives this routine. So that we can
2655 format it pretty, we define some abbreviations for the
2656 enum bpstat_what codes. */
2657 #define kc BPSTAT_WHAT_KEEP_CHECKING
2658 #define ss BPSTAT_WHAT_STOP_SILENT
2659 #define sn BPSTAT_WHAT_STOP_NOISY
2660 #define sgl BPSTAT_WHAT_SINGLE
2661 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2662 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2663 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2664 #define sr BPSTAT_WHAT_STEP_RESUME
2665 #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
2666 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2667 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2669 /* "Can't happen." Might want to print an error message.
2670 abort() is not out of the question, but chances are GDB is just
2671 a bit confused, not unusable. */
2672 #define err BPSTAT_WHAT_STOP_NOISY
2674 /* Given an old action and a class, come up with a new action. */
2675 /* One interesting property of this table is that wp_silent is the same
2676 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2677 after stopping, the check for whether to step over a breakpoint
2678 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2679 reference to how we stopped. We retain separate wp_silent and
2680 bp_silent codes in case we want to change that someday.
2682 Another possibly interesting property of this table is that
2683 there's a partial ordering, priority-like, of the actions. Once
2684 you've decided that some action is appropriate, you'll never go
2685 back and decide something of a lower priority is better. The
2688 kc < clr sgl shl slr sn sr ss ts
2689 sgl < clrs shl shlr slr sn sr ss ts
2690 slr < err shl shlr sn sr ss ts
2691 clr < clrs err shl shlr sn sr ss ts
2692 clrs < err shl shlr sn sr ss ts
2693 ss < shl shlr sn sr ts
2700 What I think this means is that we don't need a damned table
2701 here. If you just put the rows and columns in the right order,
2702 it'd look awfully regular. We could simply walk the bpstat list
2703 and choose the highest priority action we find, with a little
2704 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
2705 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
2706 is messy anyway). */
2708 /* step_resume entries: a step resume breakpoint overrides another
2709 breakpoint of signal handling (see comment in wait_for_inferior
2710 at first IN_SIGTRAMP where we set the step_resume breakpoint). */
2711 /* We handle the through_sigtramp_breakpoint the same way; having both
2712 one of those and a step_resume_breakpoint is probably very rare (?). */
2714 static const enum bpstat_what_main_action
2715 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
2718 /* kc ss sn sgl slr clr clrs sr ts shl shlr
2721 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, ts
, shl
, shlr
},
2723 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2725 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2727 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, ts
, shl
, shlr
},
2729 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2731 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2733 {slr
, ss
, sn
, slr
, err
, err
, err
, sr
, ts
, shl
, shlr
},
2735 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, ts
, shl
, shlr
},
2737 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, ts
, shl
, shlr
},
2739 {ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, shl
, shlr
},
2741 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, shl
, ts
, shl
, shlr
},
2743 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, ts
, shlr
, shlr
}
2758 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
2759 struct bpstat_what retval
;
2761 retval
.call_dummy
= 0;
2762 for (; bs
!= NULL
; bs
= bs
->next
)
2764 enum class bs_class
= no_effect
;
2765 if (bs
->breakpoint_at
== NULL
)
2766 /* I suspect this can happen if it was a momentary breakpoint
2767 which has since been deleted. */
2769 switch (bs
->breakpoint_at
->type
)
2775 case bp_hardware_breakpoint
:
2781 bs_class
= bp_noisy
;
2783 bs_class
= bp_silent
;
2786 bs_class
= bp_nostop
;
2789 case bp_hardware_watchpoint
:
2790 case bp_read_watchpoint
:
2791 case bp_access_watchpoint
:
2795 bs_class
= wp_noisy
;
2797 bs_class
= wp_silent
;
2800 /* There was a watchpoint, but we're not stopping.
2801 This requires no further action. */
2802 bs_class
= no_effect
;
2805 bs_class
= long_jump
;
2807 case bp_longjmp_resume
:
2808 bs_class
= long_resume
;
2810 case bp_step_resume
:
2813 bs_class
= step_resume
;
2816 /* It is for the wrong frame. */
2817 bs_class
= bp_nostop
;
2819 case bp_through_sigtramp
:
2820 bs_class
= through_sig
;
2822 case bp_watchpoint_scope
:
2823 bs_class
= bp_nostop
;
2825 case bp_shlib_event
:
2826 bs_class
= shlib_event
;
2829 case bp_catch_unload
:
2830 /* Only if this catchpoint triggered should we cause the
2831 step-out-of-dld behaviour. Otherwise, we ignore this
2834 bs_class
= catch_shlib_event
;
2836 bs_class
= no_effect
;
2839 case bp_catch_vfork
:
2844 bs_class
= bp_noisy
;
2846 bs_class
= bp_silent
;
2849 /* There was a catchpoint, but we're not stopping.
2850 This requires no further action. */
2851 bs_class
= no_effect
;
2853 case bp_catch_catch
:
2854 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
2855 bs_class
= bp_nostop
;
2857 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2859 case bp_catch_throw
:
2860 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
2861 bs_class
= bp_nostop
;
2863 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2866 /* Make sure the action is stop (silent or noisy),
2867 so infrun.c pops the dummy frame. */
2868 bs_class
= bp_silent
;
2869 retval
.call_dummy
= 1;
2872 current_action
= table
[(int) bs_class
][(int) current_action
];
2874 retval
.main_action
= current_action
;
2878 /* Nonzero if we should step constantly (e.g. watchpoints on machines
2879 without hardware support). This isn't related to a specific bpstat,
2880 just to things like whether watchpoints are set. */
2883 bpstat_should_step ()
2885 struct breakpoint
*b
;
2887 if (b
->enable
== enabled
&& b
->type
== bp_watchpoint
)
2892 /* Nonzero if there are enabled hardware watchpoints. */
2894 bpstat_have_active_hw_watchpoints ()
2896 struct breakpoint
*b
;
2898 if ((b
->enable
== enabled
) &&
2900 ((b
->type
== bp_hardware_watchpoint
) ||
2901 (b
->type
== bp_read_watchpoint
) ||
2902 (b
->type
== bp_access_watchpoint
)))
2908 /* Given a bpstat that records zero or more triggered eventpoints, this
2909 function returns another bpstat which contains only the catchpoints
2910 on that first list, if any. */
2912 bpstat_get_triggered_catchpoints (ep_list
, cp_list
)
2916 struct bpstats root_bs
[1];
2917 bpstat bs
= root_bs
;
2918 struct breakpoint
*ep
;
2921 bpstat_clear (cp_list
);
2922 root_bs
->next
= NULL
;
2924 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
2926 /* Is this eventpoint a catchpoint? If not, ignore it. */
2927 ep
= ep_list
->breakpoint_at
;
2930 if ((ep
->type
!= bp_catch_load
) &&
2931 (ep
->type
!= bp_catch_unload
) &&
2932 (ep
->type
!= bp_catch_catch
) &&
2933 (ep
->type
!= bp_catch_throw
))
2934 /* pai: (temp) ADD fork/vfork here!! */
2937 /* Yes; add it to the list. */
2938 bs
= bpstat_alloc (ep
, bs
);
2943 #if defined(SOLIB_ADD)
2944 /* Also, for each triggered catchpoint, tag it with the name of
2945 the library that caused this trigger. (We copy the name now,
2946 because it's only guaranteed to be available NOW, when the
2947 catchpoint triggers. Clients who may wish to know the name
2948 later must get it from the catchpoint itself.) */
2949 if (ep
->triggered_dll_pathname
!= NULL
)
2950 free (ep
->triggered_dll_pathname
);
2951 if (ep
->type
== bp_catch_load
)
2952 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid
);
2954 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid
);
2956 dll_pathname
= NULL
;
2960 ep
->triggered_dll_pathname
= (char *)
2961 xmalloc (strlen (dll_pathname
) + 1);
2962 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
2965 ep
->triggered_dll_pathname
= NULL
;
2971 /* Print information on breakpoint number BNUM, or -1 if all.
2972 If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
2973 is nonzero, process only watchpoints. */
2980 ep_type_description_t
;
2983 breakpoint_1 (bnum
, allflag
)
2987 register struct breakpoint
*b
;
2988 register struct command_line
*l
;
2989 register struct symbol
*sym
;
2990 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
2991 int found_a_breakpoint
= 0;
2992 static ep_type_description_t bptypes
[] =
2994 {bp_none
, "?deleted?"},
2995 {bp_breakpoint
, "breakpoint"},
2996 {bp_hardware_breakpoint
, "hw breakpoint"},
2997 {bp_until
, "until"},
2998 {bp_finish
, "finish"},
2999 {bp_watchpoint
, "watchpoint"},
3000 {bp_hardware_watchpoint
, "hw watchpoint"},
3001 {bp_read_watchpoint
, "read watchpoint"},
3002 {bp_access_watchpoint
, "acc watchpoint"},
3003 {bp_longjmp
, "longjmp"},
3004 {bp_longjmp_resume
, "longjmp resume"},
3005 {bp_step_resume
, "step resume"},
3006 {bp_through_sigtramp
, "sigtramp"},
3007 {bp_watchpoint_scope
, "watchpoint scope"},
3008 {bp_call_dummy
, "call dummy"},
3009 {bp_shlib_event
, "shlib events"},
3010 {bp_catch_load
, "catch load"},
3011 {bp_catch_unload
, "catch unload"},
3012 {bp_catch_fork
, "catch fork"},
3013 {bp_catch_vfork
, "catch vfork"},
3014 {bp_catch_exec
, "catch exec"},
3015 {bp_catch_catch
, "catch catch"},
3016 {bp_catch_throw
, "catch throw"}
3019 static char *bpdisps
[] =
3020 {"del", "dstp", "dis", "keep"};
3021 static char bpenables
[] = "nynny";
3022 char wrap_indent
[80];
3028 || bnum
== b
->number
)
3030 /* We only print out user settable breakpoints unless the allflag is set. */
3032 && b
->type
!= bp_breakpoint
3033 && b
->type
!= bp_catch_load
3034 && b
->type
!= bp_catch_unload
3035 && b
->type
!= bp_catch_fork
3036 && b
->type
!= bp_catch_vfork
3037 && b
->type
!= bp_catch_exec
3038 && b
->type
!= bp_catch_catch
3039 && b
->type
!= bp_catch_throw
3040 && b
->type
!= bp_hardware_breakpoint
3041 && b
->type
!= bp_watchpoint
3042 && b
->type
!= bp_read_watchpoint
3043 && b
->type
!= bp_access_watchpoint
3044 && b
->type
!= bp_hardware_watchpoint
)
3047 if (!found_a_breakpoint
++)
3049 annotate_breakpoints_headers ();
3052 printf_filtered ("Num ");
3054 printf_filtered ("Type ");
3056 printf_filtered ("Disp ");
3058 printf_filtered ("Enb ");
3062 printf_filtered ("Address ");
3065 printf_filtered ("What\n");
3067 annotate_breakpoints_table ();
3072 printf_filtered ("%-3d ", b
->number
);
3074 if ((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3075 error ("bptypes table does not describe type #%d.", (int) b
->type
);
3076 if ((int) b
->type
!= bptypes
[(int) b
->type
].type
)
3077 error ("bptypes table does not describe type #%d?", (int) b
->type
);
3078 printf_filtered ("%-14s ", bptypes
[(int) b
->type
].description
);
3080 printf_filtered ("%-4s ", bpdisps
[(int) b
->disposition
]);
3082 printf_filtered ("%-3c ", bpenables
[(int) b
->enable
]);
3084 strcpy (wrap_indent
, " ");
3086 strcat (wrap_indent
, " ");
3090 case bp_hardware_watchpoint
:
3091 case bp_read_watchpoint
:
3092 case bp_access_watchpoint
:
3093 /* Field 4, the address, is omitted (which makes the columns
3094 not line up too nicely with the headers, but the effect
3095 is relatively readable). */
3097 print_expression (b
->exp
, gdb_stdout
);
3101 case bp_catch_unload
:
3102 /* Field 4, the address, is omitted (which makes the columns
3103 not line up too nicely with the headers, but the effect
3104 is relatively readable). */
3106 if (b
->dll_pathname
== NULL
)
3107 printf_filtered ("<any library> ");
3109 printf_filtered ("library \"%s\" ", b
->dll_pathname
);
3113 case bp_catch_vfork
:
3114 /* Field 4, the address, is omitted (which makes the columns
3115 not line up too nicely with the headers, but the effect
3116 is relatively readable). */
3118 if (b
->forked_inferior_pid
!= 0)
3119 printf_filtered ("process %d ", b
->forked_inferior_pid
);
3123 /* Field 4, the address, is omitted (which makes the columns
3124 not line up too nicely with the headers, but the effect
3125 is relatively readable). */
3127 if (b
->exec_pathname
!= NULL
)
3128 printf_filtered ("program \"%s\" ", b
->exec_pathname
);
3130 case bp_catch_catch
:
3131 /* Field 4, the address, is omitted (which makes the columns
3132 not line up too nicely with the headers, but the effect
3133 is relatively readable). */
3135 printf_filtered ("exception catch ");
3137 case bp_catch_throw
:
3138 /* Field 4, the address, is omitted (which makes the columns
3139 not line up too nicely with the headers, but the effect
3140 is relatively readable). */
3142 printf_filtered ("exception throw ");
3146 case bp_hardware_breakpoint
:
3150 case bp_longjmp_resume
:
3151 case bp_step_resume
:
3152 case bp_through_sigtramp
:
3153 case bp_watchpoint_scope
:
3155 case bp_shlib_event
:
3159 /* FIXME-32x64: need a print_address_numeric with
3163 local_hex_string_custom
3164 ((unsigned long) b
->address
, "08l"));
3169 last_addr
= b
->address
;
3172 sym
= find_pc_sect_function (b
->address
, b
->section
);
3175 fputs_filtered ("in ", gdb_stdout
);
3176 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), gdb_stdout
);
3177 wrap_here (wrap_indent
);
3178 fputs_filtered (" at ", gdb_stdout
);
3180 fputs_filtered (b
->source_file
, gdb_stdout
);
3181 printf_filtered (":%d", b
->line_number
);
3184 print_address_symbolic (b
->address
, gdb_stdout
, demangle
, " ");
3188 if (b
->thread
!= -1)
3189 printf_filtered (" thread %d", b
->thread
);
3191 printf_filtered ("\n");
3197 printf_filtered ("\tstop only in stack frame at ");
3198 print_address_numeric (b
->frame
, 1, gdb_stdout
);
3199 printf_filtered ("\n");
3206 printf_filtered ("\tstop only if ");
3207 print_expression (b
->cond
, gdb_stdout
);
3208 printf_filtered ("\n");
3211 if (b
->thread
!= -1)
3213 /* FIXME should make an annotation for this */
3214 printf_filtered ("\tstop only in thread %d\n", b
->thread
);
3217 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3219 /* FIXME should make an annotation for this */
3220 if (ep_is_catchpoint (b
))
3221 printf_filtered ("\tcatchpoint");
3223 printf_filtered ("\tbreakpoint");
3224 printf_filtered (" already hit %d time%s\n",
3225 b
->hit_count
, (b
->hit_count
== 1 ? "" : "s"));
3228 if (b
->ignore_count
)
3232 printf_filtered ("\tignore next %d hits\n", b
->ignore_count
);
3235 if ((l
= b
->commands
))
3241 print_command_line (l
, 4, gdb_stdout
);
3247 if (!found_a_breakpoint
)
3250 printf_filtered ("No breakpoints or watchpoints.\n");
3252 printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum
);
3255 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3256 that a comparison of an unsigned with -1 is always false. */
3257 if (last_addr
!= (CORE_ADDR
) -1)
3258 set_next_address (last_addr
);
3260 annotate_breakpoints_table_end ();
3265 breakpoints_info (bnum_exp
, from_tty
)
3272 bnum
= parse_and_eval_address (bnum_exp
);
3274 breakpoint_1 (bnum
, 0);
3279 maintenance_info_breakpoints (bnum_exp
, from_tty
)
3286 bnum
= parse_and_eval_address (bnum_exp
);
3288 breakpoint_1 (bnum
, 1);
3291 /* Print a message describing any breakpoints set at PC. */
3294 describe_other_breakpoints (pc
, section
)
3298 register int others
= 0;
3299 register struct breakpoint
*b
;
3302 if (b
->address
== pc
)
3303 if (overlay_debugging
== 0 ||
3304 b
->section
== section
)
3308 printf_filtered ("Note: breakpoint%s ", (others
> 1) ? "s" : "");
3310 if (b
->address
== pc
)
3311 if (overlay_debugging
== 0 ||
3312 b
->section
== section
)
3318 ((b
->enable
== disabled
||
3319 b
->enable
== shlib_disabled
||
3320 b
->enable
== call_disabled
) ? " (disabled)"
3321 : b
->enable
== permanent
? " (permanent)"
3323 (others
> 1) ? "," : ((others
== 1) ? " and" : ""));
3325 printf_filtered ("also set at pc ");
3326 print_address_numeric (pc
, 1, gdb_stdout
);
3327 printf_filtered (".\n");
3331 /* Set the default place to put a breakpoint
3332 for the `break' command with no arguments. */
3335 set_default_breakpoint (valid
, addr
, symtab
, line
)
3338 struct symtab
*symtab
;
3341 default_breakpoint_valid
= valid
;
3342 default_breakpoint_address
= addr
;
3343 default_breakpoint_symtab
= symtab
;
3344 default_breakpoint_line
= line
;
3347 /* Rescan breakpoints at address ADDRESS,
3348 marking the first one as "first" and any others as "duplicates".
3349 This is so that the bpt instruction is only inserted once.
3350 If we have a permanent breakpoint at ADDRESS, make that one
3351 the official one, and the rest as duplicates. */
3354 check_duplicates (address
, section
)
3358 register struct breakpoint
*b
;
3359 register int count
= 0;
3360 struct breakpoint
*perm_bp
= 0;
3362 if (address
== 0) /* Watchpoints are uninteresting */
3366 if (b
->enable
!= disabled
3367 && b
->enable
!= shlib_disabled
3368 && b
->enable
!= call_disabled
3369 && b
->address
== address
3370 && (overlay_debugging
== 0 || b
->section
== section
))
3372 /* Have we found a permanent breakpoint? */
3373 if (b
->enable
== permanent
)
3380 b
->duplicate
= count
> 1;
3383 /* If we found a permanent breakpoint at this address, go over the
3384 list again and declare all the other breakpoints there to be the
3388 perm_bp
->duplicate
= 0;
3390 /* Permanent breakpoint should always be inserted. */
3391 if (! perm_bp
->inserted
)
3392 internal_error ("allegedly permanent breakpoint is not "
3393 "actually inserted");
3399 internal_error ("another breakpoint was inserted on top of "
3400 "a permanent breakpoint");
3402 if (b
->enable
!= disabled
3403 && b
->enable
!= shlib_disabled
3404 && b
->enable
!= call_disabled
3405 && b
->address
== address
3406 && (overlay_debugging
== 0 || b
->section
== section
))
3412 /* Low level routine to set a breakpoint.
3413 Takes as args the three things that every breakpoint must have.
3414 Returns the breakpoint object so caller can set other things.
3415 Does not set the breakpoint number!
3416 Does not print anything.
3418 ==> This routine should not be called if there is a chance of later
3419 error(); otherwise it leaves a bogus breakpoint on the chain. Validate
3420 your arguments BEFORE calling this routine! */
3423 set_raw_breakpoint (sal
)
3424 struct symtab_and_line sal
;
3426 register struct breakpoint
*b
, *b1
;
3428 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
3429 memset (b
, 0, sizeof (*b
));
3430 b
->address
= sal
.pc
;
3431 if (sal
.symtab
== NULL
)
3432 b
->source_file
= NULL
;
3434 b
->source_file
= savestring (sal
.symtab
->filename
,
3435 strlen (sal
.symtab
->filename
));
3436 b
->section
= sal
.section
;
3437 b
->language
= current_language
->la_language
;
3438 b
->input_radix
= input_radix
;
3440 b
->line_number
= sal
.line
;
3441 b
->enable
= enabled
;
3444 b
->ignore_count
= 0;
3447 b
->dll_pathname
= NULL
;
3448 b
->triggered_dll_pathname
= NULL
;
3449 b
->forked_inferior_pid
= 0;
3450 b
->exec_pathname
= NULL
;
3452 /* Add this breakpoint to the end of the chain
3453 so that a list of breakpoints will come out in order
3454 of increasing numbers. */
3456 b1
= breakpoint_chain
;
3458 breakpoint_chain
= b
;
3466 check_duplicates (sal
.pc
, sal
.section
);
3467 breakpoints_changed ();
3473 /* Note that the breakpoint object B describes a permanent breakpoint
3474 instruction, hard-wired into the inferior's code. */
3476 make_breakpoint_permanent (struct breakpoint
*b
)
3478 b
->enable
= permanent
;
3480 /* By definition, permanent breakpoints are already present in the code. */
3484 #ifdef GET_LONGJMP_TARGET
3487 create_longjmp_breakpoint (func_name
)
3490 struct symtab_and_line sal
;
3491 struct breakpoint
*b
;
3493 INIT_SAL (&sal
); /* initialize to zeroes */
3494 if (func_name
!= NULL
)
3496 struct minimal_symbol
*m
;
3498 m
= lookup_minimal_symbol_text (func_name
, NULL
,
3499 (struct objfile
*) NULL
);
3501 sal
.pc
= SYMBOL_VALUE_ADDRESS (m
);
3505 sal
.section
= find_pc_overlay (sal
.pc
);
3506 b
= set_raw_breakpoint (sal
);
3510 b
->type
= func_name
!= NULL
? bp_longjmp
: bp_longjmp_resume
;
3511 b
->disposition
= donttouch
;
3512 b
->enable
= disabled
;
3515 b
->addr_string
= strsave (func_name
);
3516 b
->number
= internal_breakpoint_number
--;
3519 #endif /* #ifdef GET_LONGJMP_TARGET */
3521 /* Call this routine when stepping and nexting to enable a breakpoint
3522 if we do a longjmp(). When we hit that breakpoint, call
3523 set_longjmp_resume_breakpoint() to figure out where we are going. */
3526 enable_longjmp_breakpoint ()
3528 register struct breakpoint
*b
;
3531 if (b
->type
== bp_longjmp
)
3533 b
->enable
= enabled
;
3534 check_duplicates (b
->address
, b
->section
);
3539 disable_longjmp_breakpoint ()
3541 register struct breakpoint
*b
;
3544 if (b
->type
== bp_longjmp
3545 || b
->type
== bp_longjmp_resume
)
3547 b
->enable
= disabled
;
3548 check_duplicates (b
->address
, b
->section
);
3554 remove_solib_event_breakpoints ()
3556 register struct breakpoint
*b
, *temp
;
3558 ALL_BREAKPOINTS_SAFE (b
, temp
)
3559 if (b
->type
== bp_shlib_event
)
3560 delete_breakpoint (b
);
3564 create_solib_event_breakpoint (address
)
3567 struct breakpoint
*b
;
3568 struct symtab_and_line sal
;
3570 INIT_SAL (&sal
); /* initialize to zeroes */
3572 sal
.section
= find_pc_overlay (sal
.pc
);
3573 b
= set_raw_breakpoint (sal
);
3574 b
->number
= internal_breakpoint_number
--;
3575 b
->disposition
= donttouch
;
3576 b
->type
= bp_shlib_event
;
3581 /* Disable any breakpoints that are on code in shared libraries. Only
3582 apply to enabled breakpoints, disabled ones can just stay disabled. */
3585 disable_breakpoints_in_shlibs (silent
)
3588 struct breakpoint
*b
;
3589 int disabled_shlib_breaks
= 0;
3591 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
3594 #if defined (PC_SOLIB)
3595 if (((b
->type
== bp_breakpoint
) ||
3596 (b
->type
== bp_hardware_breakpoint
)) &&
3597 b
->enable
== enabled
&&
3599 PC_SOLIB (b
->address
))
3601 b
->enable
= shlib_disabled
;
3604 if (!disabled_shlib_breaks
)
3606 target_terminal_ours_for_output ();
3607 warning ("Temporarily disabling shared library breakpoints:");
3609 disabled_shlib_breaks
= 1;
3610 warning ("breakpoint #%d ", b
->number
);
3617 /* Try to reenable any breakpoints in shared libraries. */
3619 re_enable_breakpoints_in_shlibs ()
3621 struct breakpoint
*b
;
3624 if (b
->enable
== shlib_disabled
)
3628 /* Do not reenable the breakpoint if the shared library
3629 is still not mapped in. */
3630 if (target_read_memory (b
->address
, buf
, 1) == 0)
3631 b
->enable
= enabled
;
3638 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
, cond_string
, bp_kind
)
3643 enum bptype bp_kind
;
3645 struct breakpoint
*b
;
3646 struct symtabs_and_lines sals
;
3647 struct cleanup
*old_chain
;
3648 struct cleanup
*canonical_strings_chain
= NULL
;
3649 char *addr_start
= hookname
;
3650 char *addr_end
= NULL
;
3651 char **canonical
= (char **) NULL
;
3652 int thread
= -1; /* All threads. */
3654 /* Set a breakpoint on the specified hook. */
3655 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
, 0, &canonical
);
3656 addr_end
= hookname
;
3658 if (sals
.nelts
== 0)
3660 warning ("Unable to set a breakpoint on dynamic linker callback.");
3661 warning ("Suggest linking with /opt/langtools/lib/end.o.");
3662 warning ("GDB will be unable to track shl_load/shl_unload calls");
3665 if (sals
.nelts
!= 1)
3667 warning ("Unable to set unique breakpoint on dynamic linker callback.");
3668 warning ("GDB will be unable to track shl_load/shl_unload calls");
3672 /* Make sure that all storage allocated in decode_line_1 gets freed
3673 in case the following errors out. */
3674 old_chain
= make_cleanup (free
, sals
.sals
);
3675 if (canonical
!= (char **) NULL
)
3677 make_cleanup (free
, canonical
);
3678 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
3679 if (canonical
[0] != NULL
)
3680 make_cleanup (free
, canonical
[0]);
3683 resolve_sal_pc (&sals
.sals
[0]);
3685 /* Remove the canonical strings from the cleanup, they are needed below. */
3686 if (canonical
!= (char **) NULL
)
3687 discard_cleanups (canonical_strings_chain
);
3689 b
= set_raw_breakpoint (sals
.sals
[0]);
3690 set_breakpoint_count (breakpoint_count
+ 1);
3691 b
->number
= breakpoint_count
;
3693 b
->cond_string
= (cond_string
== NULL
) ?
3694 NULL
: savestring (cond_string
, strlen (cond_string
));
3697 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
3698 b
->addr_string
= canonical
[0];
3699 else if (addr_start
)
3700 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
3702 b
->enable
= enabled
;
3703 b
->disposition
= tempflag
? del
: donttouch
;
3705 if (dll_pathname
== NULL
)
3706 b
->dll_pathname
= NULL
;
3709 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
3710 strcpy (b
->dll_pathname
, dll_pathname
);
3715 do_cleanups (old_chain
);
3719 create_solib_load_event_breakpoint (hookname
, tempflag
,
3720 dll_pathname
, cond_string
)
3726 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
3727 cond_string
, bp_catch_load
);
3731 create_solib_unload_event_breakpoint (hookname
, tempflag
,
3732 dll_pathname
, cond_string
)
3738 solib_load_unload_1 (hookname
,tempflag
, dll_pathname
,
3739 cond_string
, bp_catch_unload
);
3743 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_kind
)
3746 enum bptype bp_kind
;
3748 struct symtab_and_line sal
;
3749 struct breakpoint
*b
;
3750 int thread
= -1; /* All threads. */
3757 b
= set_raw_breakpoint (sal
);
3758 set_breakpoint_count (breakpoint_count
+ 1);
3759 b
->number
= breakpoint_count
;
3761 b
->cond_string
= (cond_string
== NULL
) ?
3762 NULL
: savestring (cond_string
, strlen (cond_string
));
3764 b
->addr_string
= NULL
;
3765 b
->enable
= enabled
;
3766 b
->disposition
= tempflag
? del
: donttouch
;
3767 b
->forked_inferior_pid
= 0;
3775 create_fork_event_catchpoint (tempflag
, cond_string
)
3779 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
3783 create_vfork_event_catchpoint (tempflag
, cond_string
)
3787 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
3791 create_exec_event_catchpoint (tempflag
, cond_string
)
3795 struct symtab_and_line sal
;
3796 struct breakpoint
*b
;
3797 int thread
= -1; /* All threads. */
3804 b
= set_raw_breakpoint (sal
);
3805 set_breakpoint_count (breakpoint_count
+ 1);
3806 b
->number
= breakpoint_count
;
3808 b
->cond_string
= (cond_string
== NULL
) ?
3809 NULL
: savestring (cond_string
, strlen (cond_string
));
3811 b
->addr_string
= NULL
;
3812 b
->enable
= enabled
;
3813 b
->disposition
= tempflag
? del
: donttouch
;
3815 b
->type
= bp_catch_exec
;
3821 hw_breakpoint_used_count ()
3823 register struct breakpoint
*b
;
3828 if (b
->type
== bp_hardware_breakpoint
&& b
->enable
== enabled
)
3836 hw_watchpoint_used_count (type
, other_type_used
)
3838 int *other_type_used
;
3840 register struct breakpoint
*b
;
3843 *other_type_used
= 0;
3846 if (b
->enable
== enabled
)
3848 if (b
->type
== type
)
3850 else if ((b
->type
== bp_hardware_watchpoint
||
3851 b
->type
== bp_read_watchpoint
||
3852 b
->type
== bp_access_watchpoint
)
3853 && b
->enable
== enabled
)
3854 *other_type_used
= 1;
3860 /* Call this after hitting the longjmp() breakpoint. Use this to set
3861 a new breakpoint at the target of the jmp_buf.
3863 FIXME - This ought to be done by setting a temporary breakpoint
3864 that gets deleted automatically... */
3867 set_longjmp_resume_breakpoint (pc
, frame
)
3869 struct frame_info
*frame
;
3871 register struct breakpoint
*b
;
3874 if (b
->type
== bp_longjmp_resume
)
3877 b
->enable
= enabled
;
3879 b
->frame
= frame
->frame
;
3882 check_duplicates (b
->address
, b
->section
);
3888 disable_watchpoints_before_interactive_call_start ()
3890 struct breakpoint
*b
;
3894 if (((b
->type
== bp_watchpoint
)
3895 || (b
->type
== bp_hardware_watchpoint
)
3896 || (b
->type
== bp_read_watchpoint
)
3897 || (b
->type
== bp_access_watchpoint
)
3898 || ep_is_exception_catchpoint (b
))
3899 && (b
->enable
== enabled
))
3901 b
->enable
= call_disabled
;
3902 check_duplicates (b
->address
, b
->section
);
3908 enable_watchpoints_after_interactive_call_stop ()
3910 struct breakpoint
*b
;
3914 if (((b
->type
== bp_watchpoint
)
3915 || (b
->type
== bp_hardware_watchpoint
)
3916 || (b
->type
== bp_read_watchpoint
)
3917 || (b
->type
== bp_access_watchpoint
)
3918 || ep_is_exception_catchpoint (b
))
3919 && (b
->enable
== call_disabled
))
3921 b
->enable
= enabled
;
3922 check_duplicates (b
->address
, b
->section
);
3928 /* Set a breakpoint that will evaporate an end of command
3929 at address specified by SAL.
3930 Restrict it to frame FRAME if FRAME is nonzero. */
3933 set_momentary_breakpoint (sal
, frame
, type
)
3934 struct symtab_and_line sal
;
3935 struct frame_info
*frame
;
3938 register struct breakpoint
*b
;
3939 b
= set_raw_breakpoint (sal
);
3941 b
->enable
= enabled
;
3942 b
->disposition
= donttouch
;
3943 b
->frame
= (frame
? frame
->frame
: 0);
3945 /* If we're debugging a multi-threaded program, then we
3946 want momentary breakpoints to be active in only a
3947 single thread of control. */
3948 if (in_thread_list (inferior_pid
))
3949 b
->thread
= pid_to_thread_id (inferior_pid
);
3955 /* Tell the user we have just set a breakpoint B. */
3959 struct breakpoint
*b
;
3963 /* FIXME: This is misplaced; mention() is called by things (like hitting a
3964 watchpoint) other than breakpoint creation. It should be possible to
3965 clean this up and at the same time replace the random calls to
3966 breakpoint_changed with this hook, as has already been done for
3967 delete_breakpoint_hook and so on. */
3968 if (create_breakpoint_hook
)
3969 create_breakpoint_hook (b
);
3970 breakpoint_create_event (b
->number
);
3975 printf_filtered ("(apparently deleted?) Eventpoint %d: ", b
->number
);
3978 printf_filtered ("Watchpoint %d: ", b
->number
);
3979 print_expression (b
->exp
, gdb_stdout
);
3981 case bp_hardware_watchpoint
:
3982 printf_filtered ("Hardware watchpoint %d: ", b
->number
);
3983 print_expression (b
->exp
, gdb_stdout
);
3985 case bp_read_watchpoint
:
3986 printf_filtered ("Hardware read watchpoint %d: ", b
->number
);
3987 print_expression (b
->exp
, gdb_stdout
);
3989 case bp_access_watchpoint
:
3990 printf_filtered ("Hardware access (read/write) watchpoint %d: ",
3992 print_expression (b
->exp
, gdb_stdout
);
3995 printf_filtered ("Breakpoint %d", b
->number
);
3998 case bp_hardware_breakpoint
:
3999 printf_filtered ("Hardware assisted breakpoint %d", b
->number
);
4003 case bp_catch_unload
:
4004 printf_filtered ("Catchpoint %d (%s %s)",
4006 (b
->type
== bp_catch_load
) ? "load" : "unload",
4007 (b
->dll_pathname
!= NULL
) ?
4008 b
->dll_pathname
: "<any library>");
4011 case bp_catch_vfork
:
4012 printf_filtered ("Catchpoint %d (%s)",
4014 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4017 printf_filtered ("Catchpoint %d (exec)",
4020 case bp_catch_catch
:
4021 case bp_catch_throw
:
4022 printf_filtered ("Catchpoint %d (%s)",
4024 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
4030 case bp_longjmp_resume
:
4031 case bp_step_resume
:
4032 case bp_through_sigtramp
:
4034 case bp_watchpoint_scope
:
4035 case bp_shlib_event
:
4040 if (addressprint
|| b
->source_file
== NULL
)
4042 printf_filtered (" at ");
4043 print_address_numeric (b
->address
, 1, gdb_stdout
);
4046 printf_filtered (": file %s, line %d.",
4047 b
->source_file
, b
->line_number
);
4048 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, b
, 1));
4049 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
4051 printf_filtered ("\n");
4055 /* Set a breakpoint according to ARG (function, linenum or *address)
4056 flag: first bit : 0 non-temporary, 1 temporary.
4057 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
4060 break_command_1 (arg
, flag
, from_tty
)
4064 int tempflag
, hardwareflag
;
4065 struct symtabs_and_lines sals
;
4066 struct symtab_and_line sal
;
4067 register struct expression
*cond
= 0;
4068 register struct breakpoint
*b
;
4070 /* Pointers in arg to the start, and one past the end, of the condition. */
4071 char *cond_start
= NULL
;
4072 char *cond_end
= NULL
;
4073 /* Pointers in arg to the start, and one past the end,
4074 of the address part. */
4075 char *addr_start
= NULL
;
4076 char *addr_end
= NULL
;
4077 struct cleanup
*old_chain
;
4078 struct cleanup
*canonical_strings_chain
= NULL
;
4079 char **canonical
= (char **) NULL
;
4083 hardwareflag
= flag
& BP_HARDWAREFLAG
;
4084 tempflag
= flag
& BP_TEMPFLAG
;
4089 INIT_SAL (&sal
); /* initialize to zeroes */
4091 /* If no arg given, or if first arg is 'if ', use the default breakpoint. */
4093 if (!arg
|| (arg
[0] == 'i' && arg
[1] == 'f'
4094 && (arg
[2] == ' ' || arg
[2] == '\t')))
4096 if (default_breakpoint_valid
)
4098 sals
.sals
= (struct symtab_and_line
*)
4099 xmalloc (sizeof (struct symtab_and_line
));
4100 sal
.pc
= default_breakpoint_address
;
4101 sal
.line
= default_breakpoint_line
;
4102 sal
.symtab
= default_breakpoint_symtab
;
4103 sal
.section
= find_pc_overlay (sal
.pc
);
4108 error ("No default breakpoint address now.");
4114 /* Force almost all breakpoints to be in terms of the
4115 current_source_symtab (which is decode_line_1's default). This
4116 should produce the results we want almost all of the time while
4117 leaving default_breakpoint_* alone. */
4118 if (default_breakpoint_valid
4119 && (!current_source_symtab
4120 || (arg
&& (*arg
== '+' || *arg
== '-'))))
4121 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
4122 default_breakpoint_line
, &canonical
);
4124 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
, 0, &canonical
);
4132 /* Make sure that all storage allocated in decode_line_1 gets freed
4133 in case the following `for' loop errors out. */
4134 old_chain
= make_cleanup (free
, sals
.sals
);
4135 if (canonical
!= (char **) NULL
)
4137 make_cleanup (free
, canonical
);
4138 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4139 for (i
= 0; i
< sals
.nelts
; i
++)
4141 if (canonical
[i
] != NULL
)
4142 make_cleanup (free
, canonical
[i
]);
4146 thread
= -1; /* No specific thread yet */
4148 /* Resolve all line numbers to PC's, and verify that conditions
4149 can be parsed, before setting any breakpoints. */
4150 for (i
= 0; i
< sals
.nelts
; i
++)
4152 char *tok
, *end_tok
;
4155 resolve_sal_pc (&sals
.sals
[i
]);
4157 /* It's possible for the PC to be nonzero, but still an illegal
4158 value on some targets.
4160 For example, on HP-UX if you start gdb, and before running the
4161 inferior you try to set a breakpoint on a shared library function
4162 "foo" where the inferior doesn't call "foo" directly but does
4163 pass its address to another function call, then we do find a
4164 minimal symbol for the "foo", but it's address is invalid.
4165 (Appears to be an index into a table that the loader sets up
4166 when the inferior is run.)
4168 Give the target a chance to bless sals.sals[i].pc before we
4169 try to make a breakpoint for it. */
4170 if (PC_REQUIRES_RUN_BEFORE_USE (sals
.sals
[i
].pc
))
4172 error ("Cannot break on %s without a running program.",
4180 while (*tok
== ' ' || *tok
== '\t')
4185 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
4188 toklen
= end_tok
- tok
;
4190 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
4192 tok
= cond_start
= end_tok
+ 1;
4193 cond
= parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4196 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
4202 thread
= strtol (tok
, &tok
, 0);
4204 error ("Junk after thread keyword.");
4205 if (!valid_thread_id (thread
))
4206 error ("Unknown thread %d\n", thread
);
4209 error ("Junk at end of arguments.");
4214 int i
, target_resources_ok
;
4216 i
= hw_breakpoint_used_count ();
4217 target_resources_ok
=
4218 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4220 if (target_resources_ok
== 0)
4221 error ("No hardware breakpoint support in the target.");
4222 else if (target_resources_ok
< 0)
4223 error ("Hardware breakpoints used exceeds limit.");
4226 /* Remove the canonical strings from the cleanup, they are needed below. */
4227 if (canonical
!= (char **) NULL
)
4228 discard_cleanups (canonical_strings_chain
);
4230 /* Now set all the breakpoints. */
4231 for (i
= 0; i
< sals
.nelts
; i
++)
4236 describe_other_breakpoints (sal
.pc
, sal
.section
);
4238 b
= set_raw_breakpoint (sal
);
4239 set_breakpoint_count (breakpoint_count
+ 1);
4240 b
->number
= breakpoint_count
;
4241 b
->type
= hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
;
4245 /* If a canonical line spec is needed use that instead of the
4247 if (canonical
!= (char **) NULL
&& canonical
[i
] != NULL
)
4248 b
->addr_string
= canonical
[i
];
4249 else if (addr_start
)
4250 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4252 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
4254 b
->enable
= enabled
;
4255 b
->disposition
= tempflag
? del
: donttouch
;
4261 warning ("Multiple breakpoints were set.");
4262 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
4264 do_cleanups (old_chain
);
4268 break_at_finish_at_depth_command_1 (arg
, flag
, from_tty
)
4273 struct frame_info
*frame
;
4274 CORE_ADDR low
, high
, selected_pc
= 0;
4275 char *extra_args
, *level_arg
, *addr_string
;
4276 int extra_args_len
= 0, if_arg
= 0;
4279 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
4282 if (default_breakpoint_valid
)
4286 selected_pc
= selected_frame
->pc
;
4291 error ("No selected frame.");
4294 error ("No default breakpoint address now.");
4298 extra_args
= strchr (arg
, ' ');
4302 extra_args_len
= strlen (extra_args
);
4303 level_arg
= (char *) xmalloc (extra_args
- arg
);
4304 strncpy (level_arg
, arg
, extra_args
- arg
- 1);
4305 level_arg
[extra_args
- arg
- 1] = '\0';
4309 level_arg
= (char *) xmalloc (strlen (arg
) + 1);
4310 strcpy (level_arg
, arg
);
4313 frame
= parse_frame_specification (level_arg
);
4315 selected_pc
= frame
->pc
;
4322 extra_args_len
= strlen (arg
);
4327 if (find_pc_partial_function (selected_pc
, (char **) NULL
, &low
, &high
))
4329 addr_string
= (char *) xmalloc (26 + extra_args_len
);
4331 sprintf (addr_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
4333 sprintf (addr_string
, "*0x%s", paddr_nz (high
));
4334 break_command_1 (addr_string
, flag
, from_tty
);
4338 error ("No function contains the specified address");
4341 error ("Unable to set breakpoint at procedure exit");
4346 break_at_finish_command_1 (arg
, flag
, from_tty
)
4351 char *addr_string
, *break_string
, *beg_addr_string
;
4352 CORE_ADDR low
, high
;
4353 struct symtabs_and_lines sals
;
4354 struct symtab_and_line sal
;
4355 struct cleanup
*old_chain
;
4357 int extra_args_len
= 0;
4361 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
4363 if (default_breakpoint_valid
)
4367 addr_string
= (char *) xmalloc (15);
4368 sprintf (addr_string
, "*0x%s", paddr_nz (selected_frame
->pc
));
4373 error ("No selected frame.");
4376 error ("No default breakpoint address now.");
4380 addr_string
= (char *) xmalloc (strlen (arg
) + 1);
4381 strcpy (addr_string
, arg
);
4387 extra_args_len
= strlen (arg
);
4391 /* get the stuff after the function name or address */
4392 extra_args
= strchr (arg
, ' ');
4396 extra_args_len
= strlen (extra_args
);
4403 beg_addr_string
= addr_string
;
4404 sals
= decode_line_1 (&addr_string
, 1, (struct symtab
*) NULL
, 0,
4407 free (beg_addr_string
);
4408 old_chain
= make_cleanup (free
, sals
.sals
);
4409 for (i
= 0; (i
< sals
.nelts
); i
++)
4412 if (find_pc_partial_function (sal
.pc
, (char **) NULL
, &low
, &high
))
4414 break_string
= (char *) xmalloc (extra_args_len
+ 26);
4416 sprintf (break_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
4418 sprintf (break_string
, "*0x%s", paddr_nz (high
));
4419 break_command_1 (break_string
, flag
, from_tty
);
4420 free (break_string
);
4423 error ("No function contains the specified address");
4427 warning ("Multiple breakpoints were set.\n");
4428 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
4430 do_cleanups (old_chain
);
4434 /* Helper function for break_command_1 and disassemble_command. */
4437 resolve_sal_pc (sal
)
4438 struct symtab_and_line
*sal
;
4442 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
4444 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
4445 error ("No line %d in file \"%s\".",
4446 sal
->line
, sal
->symtab
->filename
);
4450 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
4452 struct blockvector
*bv
;
4457 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
4460 b
= BLOCKVECTOR_BLOCK (bv
, index
);
4461 sym
= block_function (b
);
4464 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
4465 sal
->section
= SYMBOL_BFD_SECTION (sym
);
4469 /* It really is worthwhile to have the section, so we'll just
4470 have to look harder. This case can be executed if we have
4471 line numbers but no functions (as can happen in assembly
4474 struct minimal_symbol
*msym
;
4476 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
4478 sal
->section
= SYMBOL_BFD_SECTION (msym
);
4485 break_command (arg
, from_tty
)
4489 break_command_1 (arg
, 0, from_tty
);
4493 break_at_finish_command (arg
, from_tty
)
4497 break_at_finish_command_1 (arg
, 0, from_tty
);
4501 break_at_finish_at_depth_command (arg
, from_tty
)
4505 break_at_finish_at_depth_command_1 (arg
, 0, from_tty
);
4509 tbreak_command (arg
, from_tty
)
4513 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
4517 tbreak_at_finish_command (arg
, from_tty
)
4521 break_at_finish_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
4525 hbreak_command (arg
, from_tty
)
4529 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
4533 thbreak_command (arg
, from_tty
)
4537 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
4541 stop_command (arg
, from_tty
)
4545 printf_filtered ("Specify the type of breakpoint to set.\n\
4546 Usage: stop in <function | address>\n\
4551 stopin_command (arg
, from_tty
)
4557 if (arg
== (char *) NULL
)
4559 else if (*arg
!= '*')
4564 /* look for a ':'. If this is a line number specification, then
4565 say it is bad, otherwise, it should be an address or
4566 function/method name */
4567 while (*argptr
&& !hasColon
)
4569 hasColon
= (*argptr
== ':');
4574 badInput
= (*argptr
!= ':'); /* Not a class::method */
4576 badInput
= isdigit (*arg
); /* a simple line number */
4580 printf_filtered ("Usage: stop in <function | address>\n");
4582 break_command_1 (arg
, 0, from_tty
);
4586 stopat_command (arg
, from_tty
)
4592 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
4599 /* look for a ':'. If there is a '::' then get out, otherwise
4600 it is probably a line number. */
4601 while (*argptr
&& !hasColon
)
4603 hasColon
= (*argptr
== ':');
4608 badInput
= (*argptr
== ':'); /* we have class::method */
4610 badInput
= !isdigit (*arg
); /* not a line number */
4614 printf_filtered ("Usage: stop at <line>\n");
4616 break_command_1 (arg
, 0, from_tty
);
4620 /* accessflag: hw_write: watch write,
4621 hw_read: watch read,
4622 hw_access: watch access (read or write) */
4624 watch_command_1 (arg
, accessflag
, from_tty
)
4629 struct breakpoint
*b
;
4630 struct symtab_and_line sal
;
4631 struct expression
*exp
;
4632 struct block
*exp_valid_block
;
4633 struct value
*val
, *mark
;
4634 struct frame_info
*frame
;
4635 struct frame_info
*prev_frame
= NULL
;
4636 char *exp_start
= NULL
;
4637 char *exp_end
= NULL
;
4638 char *tok
, *end_tok
;
4640 char *cond_start
= NULL
;
4641 char *cond_end
= NULL
;
4642 struct expression
*cond
= NULL
;
4643 int i
, other_type_used
, target_resources_ok
= 0;
4644 enum bptype bp_type
;
4647 INIT_SAL (&sal
); /* initialize to zeroes */
4649 /* Parse arguments. */
4650 innermost_block
= NULL
;
4652 exp
= parse_exp_1 (&arg
, 0, 0);
4654 exp_valid_block
= innermost_block
;
4655 mark
= value_mark ();
4656 val
= evaluate_expression (exp
);
4657 release_value (val
);
4658 if (VALUE_LAZY (val
))
4659 value_fetch_lazy (val
);
4662 while (*tok
== ' ' || *tok
== '\t')
4666 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
4669 toklen
= end_tok
- tok
;
4670 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
4672 tok
= cond_start
= end_tok
+ 1;
4673 cond
= parse_exp_1 (&tok
, 0, 0);
4677 error ("Junk at end of command.");
4679 if (accessflag
== hw_read
)
4680 bp_type
= bp_read_watchpoint
;
4681 else if (accessflag
== hw_access
)
4682 bp_type
= bp_access_watchpoint
;
4684 bp_type
= bp_hardware_watchpoint
;
4686 mem_cnt
= can_use_hardware_watchpoint (val
);
4687 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
4688 error ("Expression cannot be implemented with read/access watchpoint.");
4691 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
4692 target_resources_ok
=
4693 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
4695 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
4696 error ("Target does not support this type of hardware watchpoint.");
4698 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
4699 error ("Target can only support one kind of HW watchpoint at a time.");
4702 #if defined(HPUXHPPA)
4703 /* On HP-UX if you set a h/w
4704 watchpoint before the "run" command, the inferior dies with a e.g.,
4705 SIGILL once you start it. I initially believed this was due to a
4706 bad interaction between page protection traps and the initial
4707 startup sequence by the dynamic linker.
4709 However, I tried avoiding that by having HP-UX's implementation of
4710 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
4711 yet, which forced slow watches before a "run" or "attach", and it
4712 still fails somewhere in the startup code.
4714 Until I figure out what's happening, I'm disallowing watches altogether
4715 before the "run" or "attach" command. We'll tell the user they must
4716 set watches after getting the program started. */
4717 if (!target_has_execution
)
4719 warning ("can't do that without a running program; try \"break main\", \"run\" first");
4722 #endif /* HPUXHPPA */
4724 /* Now set up the breakpoint. */
4725 b
= set_raw_breakpoint (sal
);
4726 set_breakpoint_count (breakpoint_count
+ 1);
4727 b
->number
= breakpoint_count
;
4728 b
->disposition
= donttouch
;
4730 b
->exp_valid_block
= exp_valid_block
;
4731 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
4735 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
4739 frame
= block_innermost_frame (exp_valid_block
);
4742 prev_frame
= get_prev_frame (frame
);
4743 b
->watchpoint_frame
= frame
->frame
;
4746 b
->watchpoint_frame
= (CORE_ADDR
) 0;
4748 if (mem_cnt
&& target_resources_ok
> 0)
4751 b
->type
= bp_watchpoint
;
4753 /* If the expression is "local", then set up a "watchpoint scope"
4754 breakpoint at the point where we've left the scope of the watchpoint
4756 if (innermost_block
)
4760 struct breakpoint
*scope_breakpoint
;
4761 struct symtab_and_line scope_sal
;
4763 INIT_SAL (&scope_sal
); /* initialize to zeroes */
4764 scope_sal
.pc
= get_frame_pc (prev_frame
);
4765 scope_sal
.section
= find_pc_overlay (scope_sal
.pc
);
4767 scope_breakpoint
= set_raw_breakpoint (scope_sal
);
4768 set_breakpoint_count (breakpoint_count
+ 1);
4769 scope_breakpoint
->number
= breakpoint_count
;
4771 scope_breakpoint
->type
= bp_watchpoint_scope
;
4772 scope_breakpoint
->enable
= enabled
;
4774 /* Automatically delete the breakpoint when it hits. */
4775 scope_breakpoint
->disposition
= del
;
4777 /* Only break in the proper frame (help with recursion). */
4778 scope_breakpoint
->frame
= prev_frame
->frame
;
4780 /* Set the address at which we will stop. */
4781 scope_breakpoint
->address
= get_frame_pc (prev_frame
);
4783 /* The scope breakpoint is related to the watchpoint. We
4784 will need to act on them together. */
4785 b
->related_breakpoint
= scope_breakpoint
;
4788 value_free_to_mark (mark
);
4792 /* Return count of locations need to be watched and can be handled
4793 in hardware. If the watchpoint can not be handled
4794 in hardware return zero. */
4796 #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
4797 #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \
4798 ((BYTE_SIZE) <= (REGISTER_SIZE))
4801 #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
4802 #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
4803 TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)
4807 can_use_hardware_watchpoint (v
)
4810 int found_memory_cnt
= 0;
4812 /* Did the user specifically forbid us to use hardware watchpoints? */
4813 if (!can_use_hw_watchpoints
)
4816 /* Make sure that the value of the expression depends only upon
4817 memory contents, and values computed from them within GDB. If we
4818 find any register references or function calls, we can't use a
4819 hardware watchpoint.
4821 The idea here is that evaluating an expression generates a series
4822 of values, one holding the value of every subexpression. (The
4823 expression a*b+c has five subexpressions: a, b, a*b, c, and
4824 a*b+c.) GDB's values hold almost enough information to establish
4825 the criteria given above --- they identify memory lvalues,
4826 register lvalues, computed values, etcetera. So we can evaluate
4827 the expression, and then scan the chain of values that leaves
4828 behind to decide whether we can detect any possible change to the
4829 expression's final value using only hardware watchpoints.
4831 However, I don't think that the values returned by inferior
4832 function calls are special in any way. So this function may not
4833 notice that an expression involving an inferior function call
4834 can't be watched with hardware watchpoints. FIXME. */
4835 for (; v
; v
= v
->next
)
4837 if (VALUE_LVAL (v
) == lval_memory
)
4840 /* A lazy memory lvalue is one that GDB never needed to fetch;
4841 we either just used its address (e.g., `a' in `a.b') or
4842 we never needed it at all (e.g., `a' in `a,b'). */
4846 /* Ahh, memory we actually used! Check if we can cover
4847 it with hardware watchpoints. */
4848 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
4849 int len
= TYPE_LENGTH (VALUE_TYPE (v
));
4851 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
4857 else if (v
->lval
!= not_lval
&& v
->modifiable
== 0)
4858 return 0; /* ??? What does this represent? */
4859 else if (v
->lval
== lval_register
)
4860 return 0; /* cannot watch a register with a HW watchpoint */
4863 /* The expression itself looks suitable for using a hardware
4864 watchpoint, but give the target machine a chance to reject it. */
4865 return found_memory_cnt
;
4869 watch_command (arg
, from_tty
)
4873 watch_command_1 (arg
, hw_write
, from_tty
);
4877 rwatch_command (arg
, from_tty
)
4881 watch_command_1 (arg
, hw_read
, from_tty
);
4885 awatch_command (arg
, from_tty
)
4889 watch_command_1 (arg
, hw_access
, from_tty
);
4893 /* Helper routines for the until_command routine in infcmd.c. Here
4894 because it uses the mechanisms of breakpoints. */
4896 /* This function is called by fetch_inferior_event via the
4897 cmd_continuation pointer, to complete the until command. It takes
4898 care of cleaning up the temporary breakpoints set up by the until
4901 until_break_command_continuation (struct continuation_arg
*arg
)
4903 /* Do all the exec cleanups, which at this point should only be the
4904 one set up in the first part of the until_break_command
4906 do_exec_cleanups (ALL_CLEANUPS
);
4911 until_break_command (arg
, from_tty
)
4915 struct symtabs_and_lines sals
;
4916 struct symtab_and_line sal
;
4917 struct frame_info
*prev_frame
= get_prev_frame (selected_frame
);
4918 struct breakpoint
*breakpoint
;
4919 struct cleanup
*old_chain
;
4921 clear_proceed_status ();
4923 /* Set a breakpoint where the user wants it and at return from
4926 if (default_breakpoint_valid
)
4927 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
4928 default_breakpoint_line
, (char ***) NULL
);
4930 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
4931 0, (char ***) NULL
);
4933 if (sals
.nelts
!= 1)
4934 error ("Couldn't get information on specified line.");
4937 free ((PTR
) sals
.sals
); /* malloc'd, so freed */
4940 error ("Junk at end of arguments.");
4942 resolve_sal_pc (&sal
);
4944 breakpoint
= set_momentary_breakpoint (sal
, selected_frame
, bp_until
);
4946 if (!event_loop_p
|| !target_can_async_p ())
4947 old_chain
= make_cleanup ((make_cleanup_func
) delete_breakpoint
,
4950 make_exec_cleanup ((make_cleanup_func
) delete_breakpoint
, breakpoint
);
4952 /* If we are running asynchronously, and the target supports async
4953 execution, we are not waiting for the target to stop, in the call
4954 tp proceed, below. This means that we cannot delete the
4955 brekpoints until the target has actually stopped. The only place
4956 where we get a chance to do that is in fetch_inferior_event, so
4957 we must set things up for that. */
4959 if (event_loop_p
&& target_can_async_p ())
4961 /* In this case we don't need args for the continuation, because
4962 all it needs to do is do the cleanups in the
4963 exec_cleanup_chain, which will be only those inserted by this
4964 function. We can get away by using ALL_CLEANUPS. */
4965 add_continuation (until_break_command_continuation
, NULL
);
4968 /* Keep within the current frame */
4972 sal
= find_pc_line (prev_frame
->pc
, 0);
4973 sal
.pc
= prev_frame
->pc
;
4974 breakpoint
= set_momentary_breakpoint (sal
, prev_frame
, bp_until
);
4975 if (!event_loop_p
|| !target_can_async_p ())
4976 make_cleanup ((make_cleanup_func
) delete_breakpoint
, breakpoint
);
4978 make_exec_cleanup ((make_cleanup_func
) delete_breakpoint
, breakpoint
);
4981 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
4982 /* Do the cleanups now, anly if we are not running asynchronously,
4983 of if we are, but the target is still synchronous. */
4984 if (!event_loop_p
|| !target_can_async_p ())
4985 do_cleanups (old_chain
);
4989 /* These aren't used; I don't konw what they were for. */
4990 /* Set a breakpoint at the catch clause for NAME. */
4992 catch_breakpoint (name
)
4998 disable_catch_breakpoint ()
5003 delete_catch_breakpoint ()
5008 enable_catch_breakpoint ()
5015 struct sal_chain
*next
;
5016 struct symtab_and_line sal
;
5020 /* Not really used -- invocation in handle_gnu_4_16_catch_command
5021 had been commented out in the v.4.16 sources, and stays
5022 disabled there now because "catch NAME" syntax isn't allowed.
5024 /* This isn't used; I don't know what it was for. */
5025 /* For each catch clause identified in ARGS, run FUNCTION
5026 with that clause as an argument. */
5027 static struct symtabs_and_lines
5028 map_catch_names (args
, function
)
5032 register char *p
= args
;
5034 struct symtabs_and_lines sals
;
5036 struct sal_chain
*sal_chain
= 0;
5040 error_no_arg ("one or more catch names");
5048 /* Don't swallow conditional part. */
5049 if (p1
[0] == 'i' && p1
[1] == 'f'
5050 && (p1
[2] == ' ' || p1
[2] == '\t'))
5056 while (isalnum (*p1
) || *p1
== '_' || *p1
== '$')
5060 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
5061 error ("Arguments must be catch names.");
5067 struct sal_chain
*next
= (struct sal_chain
*)
5068 alloca (sizeof (struct sal_chain
));
5069 next
->next
= sal_chain
;
5070 next
->sal
= get_catch_sal (p
);
5075 printf_unfiltered ("No catch clause for exception %s.\n", p
);
5080 while (*p
== ' ' || *p
== '\t')
5086 /* This shares a lot of code with `print_frame_label_vars' from stack.c. */
5088 static struct symtabs_and_lines
5089 get_catch_sals (this_level_only
)
5090 int this_level_only
;
5092 register struct blockvector
*bl
;
5093 register struct block
*block
;
5094 int index
, have_default
= 0;
5096 struct symtabs_and_lines sals
;
5097 struct sal_chain
*sal_chain
= 0;
5098 char *blocks_searched
;
5100 /* Not sure whether an error message is always the correct response,
5101 but it's better than a core dump. */
5102 if (selected_frame
== NULL
)
5103 error ("No selected frame.");
5104 block
= get_frame_block (selected_frame
);
5105 pc
= selected_frame
->pc
;
5111 error ("No symbol table info available.\n");
5113 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
5114 blocks_searched
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5115 memset (blocks_searched
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5119 CORE_ADDR end
= BLOCK_END (block
) - 4;
5122 if (bl
!= blockvector_for_pc (end
, &index
))
5123 error ("blockvector blotch");
5124 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
5125 error ("blockvector botch");
5126 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
5129 /* Don't print out blocks that have gone by. */
5130 while (index
< last_index
5131 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
5134 while (index
< last_index
5135 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
5137 if (blocks_searched
[index
] == 0)
5139 struct block
*b
= BLOCKVECTOR_BLOCK (bl
, index
);
5142 register struct symbol
*sym
;
5144 nsyms
= BLOCK_NSYMS (b
);
5146 for (i
= 0; i
< nsyms
; i
++)
5148 sym
= BLOCK_SYM (b
, i
);
5149 if (STREQ (SYMBOL_NAME (sym
), "default"))
5155 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
5157 struct sal_chain
*next
= (struct sal_chain
*)
5158 alloca (sizeof (struct sal_chain
));
5159 next
->next
= sal_chain
;
5160 next
->sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
),
5165 blocks_searched
[index
] = 1;
5171 if (sal_chain
&& this_level_only
)
5174 /* After handling the function's top-level block, stop.
5175 Don't continue to its superblock, the block of
5176 per-file symbols. */
5177 if (BLOCK_FUNCTION (block
))
5179 block
= BLOCK_SUPERBLOCK (block
);
5184 struct sal_chain
*tmp_chain
;
5186 /* Count the number of entries. */
5187 for (index
= 0, tmp_chain
= sal_chain
; tmp_chain
;
5188 tmp_chain
= tmp_chain
->next
)
5192 sals
.sals
= (struct symtab_and_line
*)
5193 xmalloc (index
* sizeof (struct symtab_and_line
));
5194 for (index
= 0; sal_chain
; sal_chain
= sal_chain
->next
, index
++)
5195 sals
.sals
[index
] = sal_chain
->sal
;
5202 ep_skip_leading_whitespace (s
)
5205 if ((s
== NULL
) || (*s
== NULL
))
5207 while (isspace (**s
))
5211 /* This function examines a string, and attempts to find a token
5212 that might be an event name in the leading characters. If a
5213 possible match is found, a pointer to the last character of
5214 the token is returned. Else, NULL is returned. */
5217 ep_find_event_name_end (arg
)
5221 char *event_name_end
= NULL
;
5223 /* If we could depend upon the presense of strrpbrk, we'd use that... */
5227 /* We break out of the loop when we find a token delimiter.
5228 Basically, we're looking for alphanumerics and underscores;
5229 anything else delimites the token. */
5232 if (!isalnum (*s
) && (*s
!= '_'))
5238 return event_name_end
;
5242 /* This function attempts to parse an optional "if <cond>" clause
5243 from the arg string. If one is not found, it returns NULL.
5245 Else, it returns a pointer to the condition string. (It does not
5246 attempt to evaluate the string against a particular block.) And,
5247 it updates arg to point to the first character following the parsed
5248 if clause in the arg string. */
5251 ep_parse_optional_if_clause (arg
)
5256 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
5259 /* Skip the "if" keyword. */
5262 /* Skip any extra leading whitespace, and record the start of the
5263 condition string. */
5264 ep_skip_leading_whitespace (arg
);
5267 /* Assume that the condition occupies the remainder of the arg string. */
5268 (*arg
) += strlen (cond_string
);
5273 /* This function attempts to parse an optional filename from the arg
5274 string. If one is not found, it returns NULL.
5276 Else, it returns a pointer to the parsed filename. (This function
5277 makes no attempt to verify that a file of that name exists, or is
5278 accessible.) And, it updates arg to point to the first character
5279 following the parsed filename in the arg string.
5281 Note that clients needing to preserve the returned filename for
5282 future access should copy it to their own buffers. */
5284 ep_parse_optional_filename (arg
)
5287 static char filename
[1024];
5292 if ((*arg_p
== '\0') || isspace (*arg_p
))
5310 /* Commands to deal with catching events, such as signals, exceptions,
5311 process start/exit, etc. */
5315 catch_fork
, catch_vfork
5319 #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
5320 static void catch_fork_command_1
PARAMS ((catch_fork_kind fork_kind
,
5326 catch_fork_command_1 (fork_kind
, arg
, tempflag
, from_tty
)
5327 catch_fork_kind fork_kind
;
5332 char *cond_string
= NULL
;
5334 ep_skip_leading_whitespace (&arg
);
5336 /* The allowed syntax is:
5338 catch [v]fork if <cond>
5340 First, check if there's an if clause. */
5341 cond_string
= ep_parse_optional_if_clause (&arg
);
5343 if ((*arg
!= '\0') && !isspace (*arg
))
5344 error ("Junk at end of arguments.");
5346 /* If this target supports it, create a fork or vfork catchpoint
5347 and enable reporting of such events. */
5351 create_fork_event_catchpoint (tempflag
, cond_string
);
5354 create_vfork_event_catchpoint (tempflag
, cond_string
);
5357 error ("unsupported or unknown fork kind; cannot catch it");
5363 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
5365 catch_exec_command_1 (arg
, tempflag
, from_tty
)
5370 char *cond_string
= NULL
;
5372 ep_skip_leading_whitespace (&arg
);
5374 /* The allowed syntax is:
5376 catch exec if <cond>
5378 First, check if there's an if clause. */
5379 cond_string
= ep_parse_optional_if_clause (&arg
);
5381 if ((*arg
!= '\0') && !isspace (*arg
))
5382 error ("Junk at end of arguments.");
5384 /* If this target supports it, create an exec catchpoint
5385 and enable reporting of such events. */
5386 create_exec_event_catchpoint (tempflag
, cond_string
);
5390 #if defined(SOLIB_ADD)
5392 catch_load_command_1 (arg
, tempflag
, from_tty
)
5397 char *dll_pathname
= NULL
;
5398 char *cond_string
= NULL
;
5400 ep_skip_leading_whitespace (&arg
);
5402 /* The allowed syntax is:
5404 catch load if <cond>
5405 catch load <filename>
5406 catch load <filename> if <cond>
5408 The user is not allowed to specify the <filename> after an
5411 We'll ignore the pathological case of a file named "if".
5413 First, check if there's an if clause. If so, then there
5414 cannot be a filename. */
5415 cond_string
= ep_parse_optional_if_clause (&arg
);
5417 /* If there was an if clause, then there cannot be a filename.
5418 Else, there might be a filename and an if clause. */
5419 if (cond_string
== NULL
)
5421 dll_pathname
= ep_parse_optional_filename (&arg
);
5422 ep_skip_leading_whitespace (&arg
);
5423 cond_string
= ep_parse_optional_if_clause (&arg
);
5426 if ((*arg
!= '\0') && !isspace (*arg
))
5427 error ("Junk at end of arguments.");
5429 /* Create a load breakpoint that only triggers when a load of
5430 the specified dll (or any dll, if no pathname was specified)
5432 SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid
, tempflag
,
5433 dll_pathname
, cond_string
);
5437 catch_unload_command_1 (arg
, tempflag
, from_tty
)
5442 char *dll_pathname
= NULL
;
5443 char *cond_string
= NULL
;
5445 ep_skip_leading_whitespace (&arg
);
5447 /* The allowed syntax is:
5449 catch unload if <cond>
5450 catch unload <filename>
5451 catch unload <filename> if <cond>
5453 The user is not allowed to specify the <filename> after an
5456 We'll ignore the pathological case of a file named "if".
5458 First, check if there's an if clause. If so, then there
5459 cannot be a filename. */
5460 cond_string
= ep_parse_optional_if_clause (&arg
);
5462 /* If there was an if clause, then there cannot be a filename.
5463 Else, there might be a filename and an if clause. */
5464 if (cond_string
== NULL
)
5466 dll_pathname
= ep_parse_optional_filename (&arg
);
5467 ep_skip_leading_whitespace (&arg
);
5468 cond_string
= ep_parse_optional_if_clause (&arg
);
5471 if ((*arg
!= '\0') && !isspace (*arg
))
5472 error ("Junk at end of arguments.");
5474 /* Create an unload breakpoint that only triggers when an unload of
5475 the specified dll (or any dll, if no pathname was specified)
5477 SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid
, tempflag
,
5478 dll_pathname
, cond_string
);
5480 #endif /* SOLIB_ADD */
5482 /* Commands to deal with catching exceptions. */
5484 /* Set a breakpoint at the specified callback routine for an
5485 exception event callback */
5488 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
)
5491 enum exception_event_kind ex_event
;
5492 struct symtab_and_line
*sal
;
5494 struct breakpoint
*b
;
5495 int thread
= -1; /* All threads. */
5497 if (!sal
) /* no exception support? */
5500 b
= set_raw_breakpoint (*sal
);
5501 set_breakpoint_count (breakpoint_count
+ 1);
5502 b
->number
= breakpoint_count
;
5504 b
->cond_string
= (cond_string
== NULL
) ?
5505 NULL
: savestring (cond_string
, strlen (cond_string
));
5507 b
->addr_string
= NULL
;
5508 b
->enable
= enabled
;
5509 b
->disposition
= tempflag
? del
: donttouch
;
5512 case EX_EVENT_THROW
:
5513 b
->type
= bp_catch_throw
;
5515 case EX_EVENT_CATCH
:
5516 b
->type
= bp_catch_catch
;
5518 default: /* error condition */
5520 b
->enable
= disabled
;
5521 error ("Internal error -- invalid catchpoint kind");
5526 /* Deal with "catch catch" and "catch throw" commands */
5529 catch_exception_command_1 (ex_event
, arg
, tempflag
, from_tty
)
5530 enum exception_event_kind ex_event
;
5535 char *cond_string
= NULL
;
5536 struct symtab_and_line
*sal
= NULL
;
5538 ep_skip_leading_whitespace (&arg
);
5540 cond_string
= ep_parse_optional_if_clause (&arg
);
5542 if ((*arg
!= '\0') && !isspace (*arg
))
5543 error ("Junk at end of arguments.");
5545 if ((ex_event
!= EX_EVENT_THROW
) &&
5546 (ex_event
!= EX_EVENT_CATCH
))
5547 error ("Unsupported or unknown exception event; cannot catch it");
5549 /* See if we can find a callback routine */
5550 sal
= target_enable_exception_callback (ex_event
, 1);
5554 /* We have callbacks from the runtime system for exceptions.
5555 Set a breakpoint on the sal found, if no errors */
5556 if (sal
!= (struct symtab_and_line
*) -1)
5557 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
5559 return; /* something went wrong with setting up callbacks */
5563 /* No callbacks from runtime system for exceptions.
5564 Try GNU C++ exception breakpoints using labels in debug info. */
5565 if (ex_event
== EX_EVENT_CATCH
)
5567 handle_gnu_4_16_catch_command (arg
, tempflag
, from_tty
);
5569 else if (ex_event
== EX_EVENT_THROW
)
5571 /* Set a breakpoint on __raise_exception () */
5573 warning ("Unsupported with this platform/compiler combination.");
5574 warning ("Perhaps you can achieve the effect you want by setting");
5575 warning ("a breakpoint on __raise_exception().");
5580 /* Cover routine to allow wrapping target_enable_exception_catchpoints
5581 inside a catch_errors */
5584 cover_target_enable_exception_callback (arg
)
5587 args_for_catchpoint_enable
*args
= arg
;
5588 struct symtab_and_line
*sal
;
5589 sal
= target_enable_exception_callback (args
->kind
, args
->enable
);
5592 else if (sal
== (struct symtab_and_line
*) -1)
5595 return 1; /*is valid */
5600 /* This is the original v.4.16 and earlier version of the
5601 catch_command_1() function. Now that other flavours of "catch"
5602 have been introduced, and since exception handling can be handled
5603 in other ways (through target ops) also, this is used only for the
5604 GNU C++ exception handling system.
5605 Note: Only the "catch" flavour of GDB 4.16 is handled here. The
5606 "catch NAME" is now no longer allowed in catch_command_1(). Also,
5607 there was no code in GDB 4.16 for "catch throw".
5609 Called from catch_exception_command_1 () */
5613 handle_gnu_4_16_catch_command (arg
, tempflag
, from_tty
)
5618 /* First, translate ARG into something we can deal with in terms
5621 struct symtabs_and_lines sals
;
5622 struct symtab_and_line sal
;
5623 register struct expression
*cond
= 0;
5624 register struct breakpoint
*b
;
5628 INIT_SAL (&sal
); /* initialize to zeroes */
5630 /* If no arg given, or if first arg is 'if ', all active catch clauses
5631 are breakpointed. */
5633 if (!arg
|| (arg
[0] == 'i' && arg
[1] == 'f'
5634 && (arg
[2] == ' ' || arg
[2] == '\t')))
5636 /* Grab all active catch clauses. */
5637 sals
= get_catch_sals (0);
5641 /* Grab selected catch clauses. */
5642 error ("catch NAME not implemented");
5645 /* Not sure why this code has been disabled. I'm leaving
5646 it disabled. We can never come here now anyway
5647 since we don't allow the "catch NAME" syntax.
5650 /* This isn't used; I don't know what it was for. */
5651 sals
= map_catch_names (arg
, catch_breakpoint
);
5659 for (i
= 0; i
< sals
.nelts
; i
++)
5661 resolve_sal_pc (&sals
.sals
[i
]);
5665 if (arg
[0] == 'i' && arg
[1] == 'f'
5666 && (arg
[2] == ' ' || arg
[2] == '\t'))
5667 cond
= parse_exp_1 ((arg
+= 2, &arg
),
5668 block_for_pc (sals
.sals
[i
].pc
), 0);
5670 error ("Junk at end of arguments.");
5675 for (i
= 0; i
< sals
.nelts
; i
++)
5680 describe_other_breakpoints (sal
.pc
, sal
.section
);
5682 b
= set_raw_breakpoint (sal
);
5683 set_breakpoint_count (breakpoint_count
+ 1);
5684 b
->number
= breakpoint_count
;
5686 /* Important -- this is an ordinary breakpoint. For platforms
5687 with callback support for exceptions,
5688 create_exception_catchpoint() will create special bp types
5689 (bp_catch_catch and bp_catch_throw), and there is code in
5690 insert_breakpoints() and elsewhere that depends on that. */
5691 b
->type
= bp_breakpoint
;
5694 b
->enable
= enabled
;
5695 b
->disposition
= tempflag
? del
: donttouch
;
5702 warning ("Multiple breakpoints were set.");
5703 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5705 free ((PTR
) sals
.sals
);
5709 /* This creates a temporary internal breakpoint
5710 just to placate infrun */
5711 static struct breakpoint
*
5712 create_temp_exception_breakpoint (pc
)
5715 struct symtab_and_line sal
;
5716 struct breakpoint
*b
;
5723 b
= set_raw_breakpoint (sal
);
5725 error ("Internal error -- couldn't set temp exception breakpoint");
5727 b
->type
= bp_breakpoint
;
5728 b
->disposition
= del
;
5729 b
->enable
= enabled
;
5731 b
->number
= internal_breakpoint_number
--;
5737 catch_command_1 (arg
, tempflag
, from_tty
)
5743 /* The first argument may be an event name, such as "start" or "load".
5744 If so, then handle it as such. If it doesn't match an event name,
5745 then attempt to interpret it as an exception name. (This latter is
5746 the v4.16-and-earlier GDB meaning of the "catch" command.)
5748 First, try to find the bounds of what might be an event name. */
5749 char *arg1_start
= arg
;
5753 if (arg1_start
== NULL
)
5755 /* Old behaviour was to use pre-v-4.16 syntax */
5756 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
5758 /* Now, this is not allowed */
5759 error ("Catch requires an event name.");
5762 arg1_end
= ep_find_event_name_end (arg1_start
);
5763 if (arg1_end
== NULL
)
5764 error ("catch requires an event");
5765 arg1_length
= arg1_end
+ 1 - arg1_start
;
5767 /* Try to match what we found against known event names. */
5768 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
5770 error ("Catch of signal not yet implemented");
5772 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
5774 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
5775 tempflag
, from_tty
);
5777 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
5779 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
5780 tempflag
, from_tty
);
5782 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
5784 error ("Catch of thread_start not yet implemented");
5786 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
5788 error ("Catch of thread_exit not yet implemented");
5790 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
5792 error ("Catch of thread_join not yet implemented");
5794 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
5796 error ("Catch of start not yet implemented");
5798 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
5800 error ("Catch of exit not yet implemented");
5802 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
5804 #if defined(CHILD_INSERT_FORK_CATCHPOINT)
5805 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
5807 error ("Catch of fork not yet implemented");
5810 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
5812 #if defined(CHILD_INSERT_VFORK_CATCHPOINT)
5813 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
5815 error ("Catch of vfork not yet implemented");
5818 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
5820 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
5821 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
5823 error ("Catch of exec not yet implemented");
5826 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
5828 #if defined(SOLIB_ADD)
5829 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
5831 error ("Catch of load not implemented");
5834 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
5836 #if defined(SOLIB_ADD)
5837 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
5839 error ("Catch of load not implemented");
5842 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
5844 error ("Catch of stop not yet implemented");
5847 /* This doesn't appear to be an event name */
5851 /* Pre-v.4.16 behaviour was to treat the argument
5852 as the name of an exception */
5853 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
5854 /* Now this is not allowed */
5855 error ("Unknown event kind specified for catch");
5860 /* Used by the gui, could be made a worker for other things. */
5863 set_breakpoint_sal (sal
)
5864 struct symtab_and_line sal
;
5866 struct breakpoint
*b
;
5867 b
= set_raw_breakpoint (sal
);
5868 set_breakpoint_count (breakpoint_count
+ 1);
5869 b
->number
= breakpoint_count
;
5870 b
->type
= bp_breakpoint
;
5877 /* These aren't used; I don't know what they were for. */
5878 /* Disable breakpoints on all catch clauses described in ARGS. */
5880 disable_catch (args
)
5883 /* Map the disable command to catch clauses described in ARGS. */
5886 /* Enable breakpoints on all catch clauses described in ARGS. */
5891 /* Map the disable command to catch clauses described in ARGS. */
5894 /* Delete breakpoints on all catch clauses in the active scope. */
5899 /* Map the delete command to catch clauses described in ARGS. */
5904 catch_command (arg
, from_tty
)
5908 catch_command_1 (arg
, 0, from_tty
);
5913 tcatch_command (arg
, from_tty
)
5917 catch_command_1 (arg
, 1, from_tty
);
5922 clear_command (arg
, from_tty
)
5926 register struct breakpoint
*b
, *b1
;
5928 struct symtabs_and_lines sals
;
5929 struct symtab_and_line sal
;
5930 register struct breakpoint
*found
;
5935 sals
= decode_line_spec (arg
, 1);
5940 sals
.sals
= (struct symtab_and_line
*)
5941 xmalloc (sizeof (struct symtab_and_line
));
5942 INIT_SAL (&sal
); /* initialize to zeroes */
5943 sal
.line
= default_breakpoint_line
;
5944 sal
.symtab
= default_breakpoint_symtab
;
5945 sal
.pc
= default_breakpoint_address
;
5946 if (sal
.symtab
== 0)
5947 error ("No source file specified.");
5955 /* For each line spec given, delete bps which correspond
5956 to it. We do this in two loops: the first loop looks at
5957 the initial bp(s) in the chain which should be deleted,
5958 the second goes down the rest of the chain looking ahead
5959 one so it can take those bps off the chain without messing
5963 for (i
= 0; i
< sals
.nelts
; i
++)
5965 /* If exact pc given, clear bpts at that pc.
5966 If line given (pc == 0), clear all bpts on specified line.
5967 If defaulting, clear all bpts on default line
5970 defaulting sal.pc != 0 tests to do
5975 1 0 <can't happen> */
5978 found
= (struct breakpoint
*) 0;
5981 while (breakpoint_chain
5982 /* Why don't we check here that this is not
5983 a watchpoint, etc., as we do below?
5984 I can't make it fail, but don't know
5985 what's stopping the failure: a watchpoint
5986 of the same address as "sal.pc" should
5987 wind up being deleted. */
5989 && (((sal
.pc
&& (breakpoint_chain
->address
== sal
.pc
)) &&
5990 (overlay_debugging
== 0 ||
5991 breakpoint_chain
->section
== sal
.section
))
5992 || ((default_match
|| (0 == sal
.pc
))
5993 && breakpoint_chain
->source_file
!= NULL
5994 && sal
.symtab
!= NULL
5995 && STREQ (breakpoint_chain
->source_file
, sal
.symtab
->filename
)
5996 && breakpoint_chain
->line_number
== sal
.line
)))
5999 b1
= breakpoint_chain
;
6000 breakpoint_chain
= b1
->next
;
6008 && b
->next
->type
!= bp_none
6009 && b
->next
->type
!= bp_watchpoint
6010 && b
->next
->type
!= bp_hardware_watchpoint
6011 && b
->next
->type
!= bp_read_watchpoint
6012 && b
->next
->type
!= bp_access_watchpoint
6013 && (((sal
.pc
&& (b
->next
->address
== sal
.pc
)) &&
6014 (overlay_debugging
== 0 ||
6015 b
->next
->section
== sal
.section
))
6016 || ((default_match
|| (0 == sal
.pc
))
6017 && b
->next
->source_file
!= NULL
6018 && sal
.symtab
!= NULL
6019 && STREQ (b
->next
->source_file
, sal
.symtab
->filename
)
6020 && b
->next
->line_number
== sal
.line
)))
6033 error ("No breakpoint at %s.", arg
);
6035 error ("No breakpoint at this line.");
6039 from_tty
= 1; /* Always report if deleted more than one */
6041 printf_unfiltered ("Deleted breakpoint%s ", found
->next
? "s" : "");
6042 breakpoints_changed ();
6046 printf_unfiltered ("%d ", found
->number
);
6048 delete_breakpoint (found
);
6052 putchar_unfiltered ('\n');
6054 free ((PTR
) sals
.sals
);
6057 /* Delete breakpoint in BS if they are `delete' breakpoints and
6058 all breakpoints that are marked for deletion, whether hit or not.
6059 This is called after any breakpoint is hit, or after errors. */
6062 breakpoint_auto_delete (bs
)
6065 struct breakpoint
*b
, *temp
;
6067 for (; bs
; bs
= bs
->next
)
6068 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== del
6070 delete_breakpoint (bs
->breakpoint_at
);
6072 ALL_BREAKPOINTS_SAFE (b
, temp
)
6074 if (b
->disposition
== del_at_next_stop
)
6075 delete_breakpoint (b
);
6079 /* Delete a breakpoint and clean up all traces of it in the data
6083 delete_breakpoint (bpt
)
6084 struct breakpoint
*bpt
;
6086 register struct breakpoint
*b
;
6090 error ("Internal error (attempted to delete a NULL breakpoint)");
6093 /* Has this bp already been deleted? This can happen because multiple
6094 lists can hold pointers to bp's. bpstat lists are especial culprits.
6096 One example of this happening is a watchpoint's scope bp. When the
6097 scope bp triggers, we notice that the watchpoint is out of scope, and
6098 delete it. We also delete its scope bp. But the scope bp is marked
6099 "auto-deleting", and is already on a bpstat. That bpstat is then
6100 checked for auto-deleting bp's, which are deleted.
6102 A real solution to this problem might involve reference counts in bp's,
6103 and/or giving them pointers back to their referencing bpstat's, and
6104 teaching delete_breakpoint to only free a bp's storage when no more
6105 references were extent. A cheaper bandaid was chosen. */
6106 if (bpt
->type
== bp_none
)
6109 if (delete_breakpoint_hook
)
6110 delete_breakpoint_hook (bpt
);
6111 breakpoint_delete_event (bpt
->number
);
6114 remove_breakpoint (bpt
, mark_uninserted
);
6116 if (breakpoint_chain
== bpt
)
6117 breakpoint_chain
= bpt
->next
;
6119 /* If we have callback-style exception catchpoints, don't go through
6120 the adjustments to the C++ runtime library etc. if the inferior
6121 isn't actually running. target_enable_exception_callback for a
6122 null target ops vector gives an undesirable error message, so we
6123 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
6124 exceptions are supported in this way, it's OK for now. FIXME */
6125 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
6127 static char message1
[] = "Error in deleting catchpoint %d:\n";
6128 static char message
[sizeof (message1
) + 30];
6129 args_for_catchpoint_enable args
;
6131 /* Format possible error msg */
6132 sprintf (message
, message1
, bpt
->number
);
6133 args
.kind
= bpt
->type
== bp_catch_catch
?
6134 EX_EVENT_CATCH
: EX_EVENT_THROW
;
6136 catch_errors (cover_target_enable_exception_callback
, &args
,
6137 message
, RETURN_MASK_ALL
);
6144 b
->next
= bpt
->next
;
6148 /* Before turning off the visuals for the bp, check to see that
6149 there are no other bps at the same address. */
6156 clearIt
= (b
->address
!= bpt
->address
);
6163 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, bpt
, 0));
6164 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
6168 check_duplicates (bpt
->address
, bpt
->section
);
6169 /* If this breakpoint was inserted, and there is another breakpoint
6170 at the same address, we need to insert the other breakpoint. */
6172 && bpt
->type
!= bp_hardware_watchpoint
6173 && bpt
->type
!= bp_read_watchpoint
6174 && bpt
->type
!= bp_access_watchpoint
6175 && bpt
->type
!= bp_catch_fork
6176 && bpt
->type
!= bp_catch_vfork
6177 && bpt
->type
!= bp_catch_exec
)
6180 if (b
->address
== bpt
->address
6181 && b
->section
== bpt
->section
6183 && b
->enable
!= disabled
6184 && b
->enable
!= shlib_disabled
6185 && b
->enable
!= call_disabled
)
6189 /* We should never reach this point if there is a permanent
6190 breakpoint at the same address as the one being deleted.
6191 If there is a permanent breakpoint somewhere, it should
6192 always be the only one inserted. */
6193 if (b
->enable
== permanent
)
6194 internal_error ("another breakpoint was inserted on top of "
6195 "a permanent breakpoint");
6197 if (b
->type
== bp_hardware_breakpoint
)
6198 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
6200 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
6204 target_terminal_ours_for_output ();
6205 warning ("Cannot insert breakpoint %d:", b
->number
);
6206 memory_error (val
, b
->address
); /* which bombs us out */
6213 free_command_lines (&bpt
->commands
);
6216 if (bpt
->cond_string
!= NULL
)
6217 free (bpt
->cond_string
);
6218 if (bpt
->addr_string
!= NULL
)
6219 free (bpt
->addr_string
);
6220 if (bpt
->exp
!= NULL
)
6222 if (bpt
->exp_string
!= NULL
)
6223 free (bpt
->exp_string
);
6224 if (bpt
->val
!= NULL
)
6225 value_free (bpt
->val
);
6226 if (bpt
->source_file
!= NULL
)
6227 free (bpt
->source_file
);
6228 if (bpt
->dll_pathname
!= NULL
)
6229 free (bpt
->dll_pathname
);
6230 if (bpt
->triggered_dll_pathname
!= NULL
)
6231 free (bpt
->triggered_dll_pathname
);
6232 if (bpt
->exec_pathname
!= NULL
)
6233 free (bpt
->exec_pathname
);
6235 /* Be sure no bpstat's are pointing at it after it's been freed. */
6236 /* FIXME, how can we find all bpstat's?
6237 We just check stop_bpstat for now. */
6238 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6239 if (bs
->breakpoint_at
== bpt
)
6241 bs
->breakpoint_at
= NULL
;
6243 /* we'd call bpstat_clear_actions, but that free's stuff and due
6244 to the multiple pointers pointing to one item with no
6245 reference counts found anywhere through out the bpstat's (how
6246 do you spell fragile?), we don't want to free things twice --
6247 better a memory leak than a corrupt malloc pool! */
6248 bs
->commands
= NULL
;
6251 /* On the chance that someone will soon try again to delete this same
6252 bp, we mark it as deleted before freeing its storage. */
6253 bpt
->type
= bp_none
;
6259 delete_command (arg
, from_tty
)
6263 struct breakpoint
*b
, *temp
;
6267 int breaks_to_delete
= 0;
6269 /* Delete all breakpoints if no argument.
6270 Do not delete internal or call-dummy breakpoints, these
6271 have to be deleted with an explicit breakpoint number argument. */
6274 if (b
->type
!= bp_call_dummy
&&
6275 b
->type
!= bp_shlib_event
&&
6277 breaks_to_delete
= 1;
6280 /* Ask user only if there are some breakpoints to delete. */
6282 || (breaks_to_delete
&& query ("Delete all breakpoints? ")))
6284 ALL_BREAKPOINTS_SAFE (b
, temp
)
6286 if (b
->type
!= bp_call_dummy
&&
6287 b
->type
!= bp_shlib_event
&&
6289 delete_breakpoint (b
);
6294 map_breakpoint_numbers (arg
, delete_breakpoint
);
6297 /* Reset a breakpoint given it's struct breakpoint * BINT.
6298 The value we return ends up being the return value from catch_errors.
6299 Unused in this case. */
6302 breakpoint_re_set_one (bint
)
6305 /* get past catch_errs */
6306 struct breakpoint
*b
= (struct breakpoint
*) bint
;
6309 struct symtabs_and_lines sals
;
6311 enum enable save_enable
;
6316 warning ("attempted to reset apparently deleted breakpoint #%d?",
6320 case bp_hardware_breakpoint
:
6322 case bp_catch_unload
:
6323 if (b
->addr_string
== NULL
)
6325 /* Anything without a string can't be re-set. */
6326 delete_breakpoint (b
);
6329 /* In case we have a problem, disable this breakpoint. We'll restore
6330 its status if we succeed. */
6331 save_enable
= b
->enable
;
6332 b
->enable
= disabled
;
6334 set_language (b
->language
);
6335 input_radix
= b
->input_radix
;
6337 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
);
6338 for (i
= 0; i
< sals
.nelts
; i
++)
6340 resolve_sal_pc (&sals
.sals
[i
]);
6342 /* Reparse conditions, they might contain references to the
6344 if (b
->cond_string
!= NULL
)
6348 free ((PTR
) b
->cond
);
6349 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
6352 /* We need to re-set the breakpoint if the address changes... */
6353 if (b
->address
!= sals
.sals
[i
].pc
6354 /* ...or new and old breakpoints both have source files, and
6355 the source file name or the line number changes... */
6356 || (b
->source_file
!= NULL
6357 && sals
.sals
[i
].symtab
!= NULL
6358 && (!STREQ (b
->source_file
, sals
.sals
[i
].symtab
->filename
)
6359 || b
->line_number
!= sals
.sals
[i
].line
)
6361 /* ...or we switch between having a source file and not having
6363 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
6366 if (b
->source_file
!= NULL
)
6367 free (b
->source_file
);
6368 if (sals
.sals
[i
].symtab
== NULL
)
6369 b
->source_file
= NULL
;
6372 savestring (sals
.sals
[i
].symtab
->filename
,
6373 strlen (sals
.sals
[i
].symtab
->filename
));
6374 b
->line_number
= sals
.sals
[i
].line
;
6375 b
->address
= sals
.sals
[i
].pc
;
6377 /* Used to check for duplicates here, but that can
6378 cause trouble, as it doesn't check for disable
6383 /* Might be better to do this just once per breakpoint_re_set,
6384 rather than once for every breakpoint. */
6385 breakpoints_changed ();
6387 b
->section
= sals
.sals
[i
].section
;
6388 b
->enable
= save_enable
; /* Restore it, this worked. */
6391 /* Now that this is re-enabled, check_duplicates
6393 check_duplicates (b
->address
, b
->section
);
6396 free ((PTR
) sals
.sals
);
6400 case bp_hardware_watchpoint
:
6401 case bp_read_watchpoint
:
6402 case bp_access_watchpoint
:
6403 innermost_block
= NULL
;
6404 /* The issue arises of what context to evaluate this in. The
6405 same one as when it was set, but what does that mean when
6406 symbols have been re-read? We could save the filename and
6407 functionname, but if the context is more local than that, the
6408 best we could do would be something like how many levels deep
6409 and which index at that particular level, but that's going to
6410 be less stable than filenames or function names. */
6412 /* So for now, just use a global context. */
6414 free ((PTR
) b
->exp
);
6415 b
->exp
= parse_expression (b
->exp_string
);
6416 b
->exp_valid_block
= innermost_block
;
6417 mark
= value_mark ();
6419 value_free (b
->val
);
6420 b
->val
= evaluate_expression (b
->exp
);
6421 release_value (b
->val
);
6422 if (VALUE_LAZY (b
->val
))
6423 value_fetch_lazy (b
->val
);
6425 if (b
->cond_string
!= NULL
)
6429 free ((PTR
) b
->cond
);
6430 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
6432 if (b
->enable
== enabled
)
6434 value_free_to_mark (mark
);
6436 case bp_catch_catch
:
6437 case bp_catch_throw
:
6439 /* We needn't really do anything to reset these, since the mask
6440 that requests them is unaffected by e.g., new libraries being
6443 case bp_catch_vfork
:
6448 printf_filtered ("Deleting unknown breakpoint type %d\n", b
->type
);
6450 /* Delete longjmp breakpoints, they will be reset later by
6451 breakpoint_re_set. */
6453 case bp_longjmp_resume
:
6454 delete_breakpoint (b
);
6457 /* This breakpoint is special, it's set up when the inferior
6458 starts and we really don't want to touch it. */
6459 case bp_shlib_event
:
6461 /* Keep temporary breakpoints, which can be encountered when we step
6462 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
6463 Otherwise these should have been blown away via the cleanup chain
6464 or by breakpoint_init_inferior when we rerun the executable. */
6467 case bp_watchpoint_scope
:
6469 case bp_step_resume
:
6476 /* Re-set all breakpoints after symbols have been re-loaded. */
6478 breakpoint_re_set ()
6480 struct breakpoint
*b
, *temp
;
6481 enum language save_language
;
6482 int save_input_radix
;
6483 static char message1
[] = "Error in re-setting breakpoint %d:\n";
6484 char message
[sizeof (message1
) + 30 /* slop */ ];
6486 save_language
= current_language
->la_language
;
6487 save_input_radix
= input_radix
;
6488 ALL_BREAKPOINTS_SAFE (b
, temp
)
6490 /* Format possible error msg */
6491 sprintf (message
, message1
, b
->number
);
6492 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
6494 set_language (save_language
);
6495 input_radix
= save_input_radix
;
6497 #ifdef GET_LONGJMP_TARGET
6498 create_longjmp_breakpoint ("longjmp");
6499 create_longjmp_breakpoint ("_longjmp");
6500 create_longjmp_breakpoint ("siglongjmp");
6501 create_longjmp_breakpoint ("_siglongjmp");
6502 create_longjmp_breakpoint (NULL
);
6506 /* Took this out (temporarily at least), since it produces an extra
6507 blank line at startup. This messes up the gdbtests. -PB */
6508 /* Blank line to finish off all those mention() messages we just printed. */
6509 printf_filtered ("\n");
6513 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
6514 If from_tty is nonzero, it prints a message to that effect,
6515 which ends with a period (no newline). */
6517 /* Reset the thread number of this breakpoint:
6519 - If the breakpoint is for all threads, leave it as-is.
6520 - Else, reset it to the current thread for inferior_pid. */
6522 breakpoint_re_set_thread (b
)
6523 struct breakpoint
*b
;
6525 if (b
->thread
!= -1)
6527 if (in_thread_list (inferior_pid
))
6528 b
->thread
= pid_to_thread_id (inferior_pid
);
6533 set_ignore_count (bptnum
, count
, from_tty
)
6534 int bptnum
, count
, from_tty
;
6536 register struct breakpoint
*b
;
6542 if (b
->number
== bptnum
)
6544 b
->ignore_count
= count
;
6547 else if (count
== 0)
6548 printf_filtered ("Will stop next time breakpoint %d is reached.",
6550 else if (count
== 1)
6551 printf_filtered ("Will ignore next crossing of breakpoint %d.",
6554 printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
6556 breakpoints_changed ();
6560 error ("No breakpoint number %d.", bptnum
);
6563 /* Clear the ignore counts of all breakpoints. */
6565 breakpoint_clear_ignore_counts ()
6567 struct breakpoint
*b
;
6570 b
->ignore_count
= 0;
6573 /* Command to set ignore-count of breakpoint N to COUNT. */
6576 ignore_command (args
, from_tty
)
6584 error_no_arg ("a breakpoint number");
6586 num
= get_number (&p
);
6588 error ("bad breakpoint number: '%s'", args
);
6590 error ("Second argument (specified ignore-count) is missing.");
6592 set_ignore_count (num
,
6593 longest_to_int (value_as_long (parse_and_eval (p
))),
6595 printf_filtered ("\n");
6596 breakpoints_changed ();
6599 /* Call FUNCTION on each of the breakpoints
6600 whose numbers are given in ARGS. */
6603 map_breakpoint_numbers (args
, function
)
6605 void (*function
) PARAMS ((struct breakpoint
*));
6607 register char *p
= args
;
6610 register struct breakpoint
*b
, *tmp
;
6614 error_no_arg ("one or more breakpoint numbers");
6621 num
= get_number_or_range (&p1
);
6624 warning ("bad breakpoint number at or near '%s'", p
);
6628 ALL_BREAKPOINTS_SAFE (b
, tmp
)
6629 if (b
->number
== num
)
6631 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
6634 if (related_breakpoint
)
6635 function (related_breakpoint
);
6639 printf_unfiltered ("No breakpoint number %d.\n", num
);
6646 disable_breakpoint (bpt
)
6647 struct breakpoint
*bpt
;
6649 /* Never disable a watchpoint scope breakpoint; we want to
6650 hit them when we leave scope so we can delete both the
6651 watchpoint and its scope breakpoint at that time. */
6652 if (bpt
->type
== bp_watchpoint_scope
)
6655 /* You can't disable permanent breakpoints. */
6656 if (bpt
->enable
== permanent
)
6659 bpt
->enable
= disabled
;
6661 check_duplicates (bpt
->address
, bpt
->section
);
6663 if (modify_breakpoint_hook
)
6664 modify_breakpoint_hook (bpt
);
6665 breakpoint_modify_event (bpt
->number
);
6670 disable_command (args
, from_tty
)
6674 register struct breakpoint
*bpt
;
6676 ALL_BREAKPOINTS (bpt
)
6680 warning ("attempted to disable apparently deleted breakpoint #%d?",
6685 case bp_catch_unload
:
6687 case bp_catch_vfork
:
6689 case bp_catch_catch
:
6690 case bp_catch_throw
:
6691 case bp_hardware_breakpoint
:
6693 case bp_hardware_watchpoint
:
6694 case bp_read_watchpoint
:
6695 case bp_access_watchpoint
:
6696 disable_breakpoint (bpt
);
6701 map_breakpoint_numbers (args
, disable_breakpoint
);
6705 do_enable_breakpoint (bpt
, disposition
)
6706 struct breakpoint
*bpt
;
6707 enum bpdisp disposition
;
6709 struct frame_info
*save_selected_frame
= NULL
;
6710 int save_selected_frame_level
= -1;
6711 int target_resources_ok
, other_type_used
;
6714 if (bpt
->type
== bp_hardware_breakpoint
)
6717 i
= hw_breakpoint_used_count ();
6718 target_resources_ok
=
6719 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
6721 if (target_resources_ok
== 0)
6722 error ("No hardware breakpoint support in the target.");
6723 else if (target_resources_ok
< 0)
6724 error ("Hardware breakpoints used exceeds limit.");
6727 if (bpt
->enable
!= permanent
)
6728 bpt
->enable
= enabled
;
6729 bpt
->disposition
= disposition
;
6730 check_duplicates (bpt
->address
, bpt
->section
);
6731 breakpoints_changed ();
6733 if (bpt
->type
== bp_watchpoint
||
6734 bpt
->type
== bp_hardware_watchpoint
||
6735 bpt
->type
== bp_read_watchpoint
||
6736 bpt
->type
== bp_access_watchpoint
)
6738 if (bpt
->exp_valid_block
!= NULL
)
6740 struct frame_info
*fr
=
6742 /* Ensure that we have the current frame. Else, this
6743 next query may pessimistically be answered as, "No,
6744 not within current scope". */
6745 get_current_frame ();
6746 fr
= find_frame_addr_in_frame_chain (bpt
->watchpoint_frame
);
6750 Cannot enable watchpoint %d because the block in which its expression\n\
6751 is valid is not currently in scope.\n", bpt
->number
);
6752 bpt
->enable
= disabled
;
6756 save_selected_frame
= selected_frame
;
6757 save_selected_frame_level
= selected_frame_level
;
6758 select_frame (fr
, -1);
6761 value_free (bpt
->val
);
6762 mark
= value_mark ();
6763 bpt
->val
= evaluate_expression (bpt
->exp
);
6764 release_value (bpt
->val
);
6765 if (VALUE_LAZY (bpt
->val
))
6766 value_fetch_lazy (bpt
->val
);
6768 if (bpt
->type
== bp_hardware_watchpoint
||
6769 bpt
->type
== bp_read_watchpoint
||
6770 bpt
->type
== bp_access_watchpoint
)
6772 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
6773 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
6775 /* Hack around 'unused var' error for some targets here */
6777 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
6778 bpt
->type
, i
+ mem_cnt
, other_type_used
);
6779 /* we can consider of type is bp_hardware_watchpoint, convert to
6780 bp_watchpoint in the following condition */
6781 if (target_resources_ok
< 0)
6784 Cannot enable watchpoint %d because target watch resources\n\
6785 have been allocated for other watchpoints.\n", bpt
->number
);
6786 bpt
->enable
= disabled
;
6787 value_free_to_mark (mark
);
6792 if (save_selected_frame_level
>= 0)
6793 select_and_print_frame (save_selected_frame
,
6794 save_selected_frame_level
);
6795 value_free_to_mark (mark
);
6797 if (modify_breakpoint_hook
)
6798 modify_breakpoint_hook (bpt
);
6799 breakpoint_modify_event (bpt
->number
);
6803 enable_breakpoint (bpt
)
6804 struct breakpoint
*bpt
;
6806 do_enable_breakpoint (bpt
, bpt
->disposition
);
6809 /* The enable command enables the specified breakpoints (or all defined
6810 breakpoints) so they once again become (or continue to be) effective
6811 in stopping the inferior. */
6815 enable_command (args
, from_tty
)
6819 register struct breakpoint
*bpt
;
6821 ALL_BREAKPOINTS (bpt
)
6825 warning ("attempted to enable apparently deleted breakpoint #%d?",
6830 case bp_catch_unload
:
6832 case bp_catch_vfork
:
6834 case bp_catch_catch
:
6835 case bp_catch_throw
:
6836 case bp_hardware_breakpoint
:
6838 case bp_hardware_watchpoint
:
6839 case bp_read_watchpoint
:
6840 case bp_access_watchpoint
:
6841 enable_breakpoint (bpt
);
6846 map_breakpoint_numbers (args
, enable_breakpoint
);
6850 enable_once_breakpoint (bpt
)
6851 struct breakpoint
*bpt
;
6853 do_enable_breakpoint (bpt
, disable
);
6858 enable_once_command (args
, from_tty
)
6862 map_breakpoint_numbers (args
, enable_once_breakpoint
);
6866 enable_delete_breakpoint (bpt
)
6867 struct breakpoint
*bpt
;
6869 do_enable_breakpoint (bpt
, del
);
6874 enable_delete_command (args
, from_tty
)
6878 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
6881 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
6883 struct symtabs_and_lines
6884 decode_line_spec_1 (string
, funfirstline
)
6888 struct symtabs_and_lines sals
;
6890 error ("Empty line specification.");
6891 if (default_breakpoint_valid
)
6892 sals
= decode_line_1 (&string
, funfirstline
,
6893 default_breakpoint_symtab
,
6894 default_breakpoint_line
,
6897 sals
= decode_line_1 (&string
, funfirstline
,
6898 (struct symtab
*) NULL
, 0, (char ***) NULL
);
6900 error ("Junk at end of line specification: %s", string
);
6905 _initialize_breakpoint ()
6907 struct cmd_list_element
*c
;
6909 breakpoint_chain
= 0;
6910 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
6911 before a breakpoint is set. */
6912 breakpoint_count
= 0;
6914 add_com ("ignore", class_breakpoint
, ignore_command
,
6915 "Set ignore-count of breakpoint number N to COUNT.\n\
6916 Usage is `ignore N COUNT'.");
6918 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
6920 add_com ("commands", class_breakpoint
, commands_command
,
6921 "Set commands to be executed when a breakpoint is hit.\n\
6922 Give breakpoint number as argument after \"commands\".\n\
6923 With no argument, the targeted breakpoint is the last one set.\n\
6924 The commands themselves follow starting on the next line.\n\
6925 Type a line containing \"end\" to indicate the end of them.\n\
6926 Give \"silent\" as the first line to make the breakpoint silent;\n\
6927 then no output is printed when it is hit, except what the commands print.");
6929 add_com ("condition", class_breakpoint
, condition_command
,
6930 "Specify breakpoint number N to break only if COND is true.\n\
6931 Usage is `condition N COND', where N is an integer and COND is an\n\
6932 expression to be evaluated whenever breakpoint N is reached. ");
6934 add_com ("tbreak", class_breakpoint
, tbreak_command
,
6935 "Set a temporary breakpoint. Args like \"break\" command.\n\
6936 Like \"break\" except the breakpoint is only temporary,\n\
6937 so it will be deleted when hit. Equivalent to \"break\" followed\n\
6938 by using \"enable delete\" on the breakpoint number.");
6939 add_com ("txbreak", class_breakpoint
, tbreak_at_finish_command
,
6940 "Set temporary breakpoint at procedure exit. Either there should\n\
6941 be no argument or the argument must be a depth.\n");
6943 add_com ("hbreak", class_breakpoint
, hbreak_command
,
6944 "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
6945 Like \"break\" except the breakpoint requires hardware support,\n\
6946 some target hardware may not have this support.");
6948 add_com ("thbreak", class_breakpoint
, thbreak_command
,
6949 "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
6950 Like \"hbreak\" except the breakpoint is only temporary,\n\
6951 so it will be deleted when hit.");
6953 add_prefix_cmd ("enable", class_breakpoint
, enable_command
,
6954 "Enable some breakpoints.\n\
6955 Give breakpoint numbers (separated by spaces) as arguments.\n\
6956 With no subcommand, breakpoints are enabled until you command otherwise.\n\
6957 This is used to cancel the effect of the \"disable\" command.\n\
6958 With a subcommand you can enable temporarily.",
6959 &enablelist
, "enable ", 1, &cmdlist
);
6961 add_com ("ab", class_breakpoint
, enable_command
,
6962 "Enable some breakpoints.\n\
6963 Give breakpoint numbers (separated by spaces) as arguments.\n\
6964 With no subcommand, breakpoints are enabled until you command otherwise.\n\
6965 This is used to cancel the effect of the \"disable\" command.\n\
6966 With a subcommand you can enable temporarily.");
6968 add_com_alias ("en", "enable", class_breakpoint
, 1);
6970 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
,
6971 "Enable some breakpoints.\n\
6972 Give breakpoint numbers (separated by spaces) as arguments.\n\
6973 This is used to cancel the effect of the \"disable\" command.\n\
6974 May be abbreviated to simply \"enable\".\n",
6975 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
6977 add_cmd ("once", no_class
, enable_once_command
,
6978 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
6979 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
6982 add_cmd ("delete", no_class
, enable_delete_command
,
6983 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
6984 If a breakpoint is hit while enabled in this fashion, it is deleted.",
6987 add_cmd ("delete", no_class
, enable_delete_command
,
6988 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
6989 If a breakpoint is hit while enabled in this fashion, it is deleted.",
6992 add_cmd ("once", no_class
, enable_once_command
,
6993 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
6994 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
6997 add_prefix_cmd ("disable", class_breakpoint
, disable_command
,
6998 "Disable some breakpoints.\n\
6999 Arguments are breakpoint numbers with spaces in between.\n\
7000 To disable all breakpoints, give no argument.\n\
7001 A disabled breakpoint is not forgotten, but has no effect until reenabled.",
7002 &disablelist
, "disable ", 1, &cmdlist
);
7003 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7004 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7006 add_com ("sb", class_breakpoint
, disable_command
,
7007 "Disable some breakpoints.\n\
7008 Arguments are breakpoint numbers with spaces in between.\n\
7009 To disable all breakpoints, give no argument.\n\
7010 A disabled breakpoint is not forgotten, but has no effect until reenabled.");
7012 add_cmd ("breakpoints", class_alias
, disable_command
,
7013 "Disable some breakpoints.\n\
7014 Arguments are breakpoint numbers with spaces in between.\n\
7015 To disable all breakpoints, give no argument.\n\
7016 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7017 This command may be abbreviated \"disable\".",
7020 add_prefix_cmd ("delete", class_breakpoint
, delete_command
,
7021 "Delete some breakpoints or auto-display expressions.\n\
7022 Arguments are breakpoint numbers with spaces in between.\n\
7023 To delete all breakpoints, give no argument.\n\
7025 Also a prefix command for deletion of other GDB objects.\n\
7026 The \"unset\" command is also an alias for \"delete\".",
7027 &deletelist
, "delete ", 1, &cmdlist
);
7028 add_com_alias ("d", "delete", class_breakpoint
, 1);
7030 add_com ("db", class_breakpoint
, delete_command
,
7031 "Delete some breakpoints.\n\
7032 Arguments are breakpoint numbers with spaces in between.\n\
7033 To delete all breakpoints, give no argument.\n");
7035 add_cmd ("breakpoints", class_alias
, delete_command
,
7036 "Delete some breakpoints or auto-display expressions.\n\
7037 Arguments are breakpoint numbers with spaces in between.\n\
7038 To delete all breakpoints, give no argument.\n\
7039 This command may be abbreviated \"delete\".",
7042 add_com ("clear", class_breakpoint
, clear_command
,
7043 concat ("Clear breakpoint at specified line or function.\n\
7044 Argument may be line number, function name, or \"*\" and an address.\n\
7045 If line number is specified, all breakpoints in that line are cleared.\n\
7046 If function is specified, breakpoints at beginning of function are cleared.\n\
7047 If an address is specified, breakpoints at that address are cleared.\n\n",
7048 "With no argument, clears all breakpoints in the line that the selected frame\n\
7051 See also the \"delete\" command which clears breakpoints by number.", NULL
));
7053 add_com ("break", class_breakpoint
, break_command
,
7054 concat ("Set breakpoint at specified line or function.\n\
7055 Argument may be line number, function name, or \"*\" and an address.\n\
7056 If line number is specified, break at start of code for that line.\n\
7057 If function is specified, break at start of code for that function.\n\
7058 If an address is specified, break at that exact address.\n",
7059 "With no arg, uses current execution address of selected stack frame.\n\
7060 This is useful for breaking on return to a stack frame.\n\
7062 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7064 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7065 add_com_alias ("b", "break", class_run
, 1);
7066 add_com_alias ("br", "break", class_run
, 1);
7067 add_com_alias ("bre", "break", class_run
, 1);
7068 add_com_alias ("brea", "break", class_run
, 1);
7070 add_com ("xbreak", class_breakpoint
, break_at_finish_command
,
7071 concat ("Set breakpoint at procedure exit. \n\
7072 Argument may be function name, or \"*\" and an address.\n\
7073 If function is specified, break at end of code for that function.\n\
7074 If an address is specified, break at the end of the function that contains \n\
7075 that exact address.\n",
7076 "With no arg, uses current execution address of selected stack frame.\n\
7077 This is useful for breaking on return to a stack frame.\n\
7079 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7081 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7082 add_com_alias ("xb", "xbreak", class_breakpoint
, 1);
7083 add_com_alias ("xbr", "xbreak", class_breakpoint
, 1);
7084 add_com_alias ("xbre", "xbreak", class_breakpoint
, 1);
7085 add_com_alias ("xbrea", "xbreak", class_breakpoint
, 1);
7089 add_com_alias ("ba", "break", class_breakpoint
, 1);
7090 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
7091 add_com ("bx", class_breakpoint
, break_at_finish_at_depth_command
,
7092 "Set breakpoint at procedure exit. Either there should\n\
7093 be no argument or the argument must be a depth.\n");
7098 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
,
7099 "Break in function/address or break at a line in the current file.",
7100 &stoplist
, "stop ", 1, &cmdlist
);
7101 add_cmd ("in", class_breakpoint
, stopin_command
,
7102 "Break in function or address.\n", &stoplist
);
7103 add_cmd ("at", class_breakpoint
, stopat_command
,
7104 "Break at a line in the current file.\n", &stoplist
);
7105 add_com ("status", class_info
, breakpoints_info
,
7106 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7107 The \"Type\" column indicates one of:\n\
7108 \tbreakpoint - normal breakpoint\n\
7109 \twatchpoint - watchpoint\n\
7110 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7111 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7112 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7113 address and file/line number respectively.\n\n",
7114 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7115 are set to the address of the last breakpoint listed.\n\n\
7116 Convenience variable \"$bpnum\" contains the number of the last\n\
7117 breakpoint set.", NULL
));
7120 add_info ("breakpoints", breakpoints_info
,
7121 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7122 The \"Type\" column indicates one of:\n\
7123 \tbreakpoint - normal breakpoint\n\
7124 \twatchpoint - watchpoint\n\
7125 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7126 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7127 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7128 address and file/line number respectively.\n\n",
7129 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7130 are set to the address of the last breakpoint listed.\n\n\
7131 Convenience variable \"$bpnum\" contains the number of the last\n\
7132 breakpoint set.", NULL
));
7135 add_com ("lb", class_breakpoint
, breakpoints_info
,
7136 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7137 The \"Type\" column indicates one of:\n\
7138 \tbreakpoint - normal breakpoint\n\
7139 \twatchpoint - watchpoint\n\
7140 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7141 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7142 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7143 address and file/line number respectively.\n\n",
7144 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7145 are set to the address of the last breakpoint listed.\n\n\
7146 Convenience variable \"$bpnum\" contains the number of the last\n\
7147 breakpoint set.", NULL
));
7149 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
,
7150 concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
7151 The \"Type\" column indicates one of:\n\
7152 \tbreakpoint - normal breakpoint\n\
7153 \twatchpoint - watchpoint\n\
7154 \tlongjmp - internal breakpoint used to step through longjmp()\n\
7155 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
7156 \tuntil - internal breakpoint used by the \"until\" command\n\
7157 \tfinish - internal breakpoint used by the \"finish\" command\n",
7158 "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7159 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7160 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7161 address and file/line number respectively.\n\n",
7162 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7163 are set to the address of the last breakpoint listed.\n\n\
7164 Convenience variable \"$bpnum\" contains the number of the last\n\
7165 breakpoint set.", NULL
),
7166 &maintenanceinfolist
);
7168 add_com ("catch", class_breakpoint
, catch_command
,
7169 "Set catchpoints to catch events.\n\
7170 Raised signals may be caught:\n\
7171 \tcatch signal - all signals\n\
7172 \tcatch signal <signame> - a particular signal\n\
7173 Raised exceptions may be caught:\n\
7174 \tcatch throw - all exceptions, when thrown\n\
7175 \tcatch throw <exceptname> - a particular exception, when thrown\n\
7176 \tcatch catch - all exceptions, when caught\n\
7177 \tcatch catch <exceptname> - a particular exception, when caught\n\
7178 Thread or process events may be caught:\n\
7179 \tcatch thread_start - any threads, just after creation\n\
7180 \tcatch thread_exit - any threads, just before expiration\n\
7181 \tcatch thread_join - any threads, just after joins\n\
7182 Process events may be caught:\n\
7183 \tcatch start - any processes, just after creation\n\
7184 \tcatch exit - any processes, just before expiration\n\
7185 \tcatch fork - calls to fork()\n\
7186 \tcatch vfork - calls to vfork()\n\
7187 \tcatch exec - calls to exec()\n\
7188 Dynamically-linked library events may be caught:\n\
7189 \tcatch load - loads of any library\n\
7190 \tcatch load <libname> - loads of a particular library\n\
7191 \tcatch unload - unloads of any library\n\
7192 \tcatch unload <libname> - unloads of a particular library\n\
7193 The act of your program's execution stopping may also be caught:\n\
7195 C++ exceptions may be caught:\n\
7196 \tcatch throw - all exceptions, when thrown\n\
7197 \tcatch catch - all exceptions, when caught\n\
7199 Do \"help set follow-fork-mode\" for info on debugging your program\n\
7200 after a fork or vfork is caught.\n\n\
7201 Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
7203 add_com ("tcatch", class_breakpoint
, tcatch_command
,
7204 "Set temporary catchpoints to catch events.\n\
7205 Args like \"catch\" command.\n\
7206 Like \"catch\" except the catchpoint is only temporary,\n\
7207 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
7208 by using \"enable delete\" on the catchpoint number.");
7210 add_com ("watch", class_breakpoint
, watch_command
,
7211 "Set a watchpoint for an expression.\n\
7212 A watchpoint stops execution of your program whenever the value of\n\
7213 an expression changes.");
7215 add_com ("rwatch", class_breakpoint
, rwatch_command
,
7216 "Set a read watchpoint for an expression.\n\
7217 A watchpoint stops execution of your program whenever the value of\n\
7218 an expression is read.");
7220 add_com ("awatch", class_breakpoint
, awatch_command
,
7221 "Set a watchpoint for an expression.\n\
7222 A watchpoint stops execution of your program whenever the value of\n\
7223 an expression is either read or written.");
7225 add_info ("watchpoints", breakpoints_info
,
7226 "Synonym for ``info breakpoints''.");
7229 c
= add_set_cmd ("can-use-hw-watchpoints", class_support
, var_zinteger
,
7230 (char *) &can_use_hw_watchpoints
,
7231 "Set debugger's willingness to use watchpoint hardware.\n\
7232 If zero, gdb will not use hardware for new watchpoints, even if\n\
7233 such is available. (However, any hardware watchpoints that were\n\
7234 created before setting this to nonzero, will continue to use watchpoint\n\
7237 add_show_from_set (c
, &showlist
);
7239 can_use_hw_watchpoints
= 1;