1 /* Everything about breakpoints, for GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include "breakpoint.h"
28 #include "expression.h"
34 #include "gdbthread.h"
37 #include "gdb_string.h"
47 #include "gdb-events.h"
49 /* Prototypes for local functions. */
51 static void until_break_command_continuation (struct continuation_arg
*arg
);
53 static void catch_command_1 (char *, int, int);
55 static void enable_delete_command (char *, int);
57 static void enable_delete_breakpoint (struct breakpoint
*);
59 static void enable_once_command (char *, int);
61 static void enable_once_breakpoint (struct breakpoint
*);
63 static void disable_command (char *, int);
65 static void enable_command (char *, int);
67 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
69 static void ignore_command (char *, int);
71 static int breakpoint_re_set_one (PTR
);
73 static void clear_command (char *, int);
75 static void catch_command (char *, int);
77 static void handle_gnu_4_16_catch_command (char *, int, int);
79 static struct symtabs_and_lines
get_catch_sals (int);
81 static void watch_command (char *, int);
83 static int can_use_hardware_watchpoint (struct value
*);
85 static void break_at_finish_command (char *, int);
86 static void break_at_finish_at_depth_command (char *, int);
88 static void tbreak_at_finish_command (char *, int);
90 static void break_command_1 (char *, int, int);
92 static void mention (struct breakpoint
*);
94 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
);
96 static void check_duplicates (CORE_ADDR
, asection
*);
98 static void describe_other_breakpoints (CORE_ADDR
, asection
*);
100 static void breakpoints_info (char *, int);
102 static void breakpoint_1 (int, int);
104 static bpstat
bpstat_alloc (struct breakpoint
*, bpstat
);
106 static int breakpoint_cond_eval (PTR
);
108 static void cleanup_executing_breakpoints (PTR
);
110 static void commands_command (char *, int);
112 static void condition_command (char *, int);
114 static int get_number_trailer (char **, int);
116 void set_breakpoint_count (int);
119 static struct breakpoint
*create_temp_exception_breakpoint (CORE_ADDR
);
129 static int remove_breakpoint (struct breakpoint
*, insertion_state_t
);
131 static enum print_stop_action
print_it_typical (bpstat
);
133 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
137 enum exception_event_kind kind
;
140 args_for_catchpoint_enable
;
142 static int watchpoint_check (PTR
);
144 static int cover_target_enable_exception_callback (PTR
);
146 static void maintenance_info_breakpoints (char *, int);
148 #ifdef GET_LONGJMP_TARGET
149 static void create_longjmp_breakpoint (char *);
152 static int hw_breakpoint_used_count (void);
154 static int hw_watchpoint_used_count (enum bptype
, int *);
156 static void hbreak_command (char *, int);
158 static void thbreak_command (char *, int);
160 static void watch_command_1 (char *, int, int);
162 static void rwatch_command (char *, int);
164 static void awatch_command (char *, int);
166 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
168 static void solib_load_unload_1 (char *hookname
,
171 char *cond_string
, enum bptype bp_kind
);
173 static void create_fork_vfork_event_catchpoint (int tempflag
,
175 enum bptype bp_kind
);
177 static void break_at_finish_at_depth_command_1 (char *arg
,
178 int flag
, int from_tty
);
180 static void break_at_finish_command_1 (char *arg
, int flag
, int from_tty
);
182 static void stop_command (char *arg
, int from_tty
);
184 static void stopin_command (char *arg
, int from_tty
);
186 static void stopat_command (char *arg
, int from_tty
);
188 static char *ep_find_event_name_end (char *arg
);
190 static char *ep_parse_optional_if_clause (char **arg
);
192 static char *ep_parse_optional_filename (char **arg
);
194 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
195 static void catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
);
198 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
199 enum exception_event_kind ex_event
,
200 struct symtab_and_line
*sal
);
202 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
203 char *arg
, int tempflag
, int from_tty
);
205 static void tcatch_command (char *arg
, int from_tty
);
207 static void ep_skip_leading_whitespace (char **s
);
209 /* Prototypes for exported functions. */
211 /* If FALSE, gdb will not use hardware support for watchpoints, even
212 if such is available. */
213 static int can_use_hw_watchpoints
;
215 void _initialize_breakpoint (void);
217 extern int addressprint
; /* Print machine addresses? */
219 static int internal_breakpoint_number
= -1;
221 /* Are we executing breakpoint commands? */
222 static int executing_breakpoint_commands
;
224 /* Walk the following statement or block through all breakpoints.
225 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
228 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
230 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
231 for (B = breakpoint_chain; \
232 B ? (TMP=B->next, 1): 0; \
235 /* True if SHIFT_INST_REGS defined, false otherwise. */
237 int must_shift_inst_regs
=
238 #if defined(SHIFT_INST_REGS)
245 /* True if breakpoint hit counts should be displayed in breakpoint info. */
247 int show_breakpoint_hit_counts
= 1;
249 /* Chain of all breakpoints defined. */
251 struct breakpoint
*breakpoint_chain
;
253 /* Number of last breakpoint made. */
255 int breakpoint_count
;
257 /* Pointer to current exception event record */
258 static struct exception_event_record
*current_exception_event
;
260 /* Indicator of whether exception catchpoints should be nuked
261 between runs of a program */
262 int exception_catchpoints_are_fragile
= 0;
264 /* Indicator of when exception catchpoints set-up should be
265 reinitialized -- e.g. when program is re-run */
266 int exception_support_initialized
= 0;
268 /* This function returns a pointer to the string representation of the
269 pathname of the dynamically-linked library that has just been
272 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
273 or undefined results are guaranteed.
275 This string's contents are only valid immediately after the
276 inferior has stopped in the dynamic linker hook, and becomes
277 invalid as soon as the inferior is continued. Clients should make
278 a copy of this string if they wish to continue the inferior and
279 then access the string. */
281 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
282 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
285 /* This function returns a pointer to the string representation of the
286 pathname of the dynamically-linked library that has just been
289 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
290 TRUE, or undefined results are guaranteed.
292 This string's contents are only valid immediately after the
293 inferior has stopped in the dynamic linker hook, and becomes
294 invalid as soon as the inferior is continued. Clients should make
295 a copy of this string if they wish to continue the inferior and
296 then access the string. */
298 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
299 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
302 /* This function is called by the "catch load" command. It allows the
303 debugger to be notified by the dynamic linker when a specified
304 library file (or any library file, if filename is NULL) is loaded. */
306 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
307 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
308 error ("catch of library loads not yet implemented on this platform")
311 /* This function is called by the "catch unload" command. It allows
312 the debugger to be notified by the dynamic linker when a specified
313 library file (or any library file, if filename is NULL) is
316 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
317 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
318 error ("catch of library unloads not yet implemented on this platform")
321 /* Set breakpoint count to NUM. */
324 set_breakpoint_count (int num
)
326 breakpoint_count
= num
;
327 set_internalvar (lookup_internalvar ("bpnum"),
328 value_from_longest (builtin_type_int
, (LONGEST
) num
));
331 /* Used in run_command to zero the hit count when a new run starts. */
334 clear_breakpoint_hit_counts (void)
336 struct breakpoint
*b
;
342 /* Default address, symtab and line to put a breakpoint at
343 for "break" command with no arg.
344 if default_breakpoint_valid is zero, the other three are
345 not valid, and "break" with no arg is an error.
347 This set by print_stack_frame, which calls set_default_breakpoint. */
349 int default_breakpoint_valid
;
350 CORE_ADDR default_breakpoint_address
;
351 struct symtab
*default_breakpoint_symtab
;
352 int default_breakpoint_line
;
354 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
355 Advance *PP after the string and any trailing whitespace.
357 Currently the string can either be a number or "$" followed by the name
358 of a convenience variable. Making it an expression wouldn't work well
359 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
361 TRAILER is a character which can be found after the number; most
362 commonly this is `-'. If you don't want a trailer, use \0. */
364 get_number_trailer (char **pp
, int trailer
)
366 int retval
= 0; /* default */
370 /* Empty line means refer to the last breakpoint. */
371 return breakpoint_count
;
374 /* Make a copy of the name, so we can null-terminate it
375 to pass to lookup_internalvar(). */
380 while (isalnum (*p
) || *p
== '_')
382 varname
= (char *) alloca (p
- start
+ 1);
383 strncpy (varname
, start
, p
- start
);
384 varname
[p
- start
] = '\0';
385 val
= value_of_internalvar (lookup_internalvar (varname
));
386 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_INT
)
387 retval
= (int) value_as_long (val
);
390 printf_filtered ("Convenience variable must have integer value.\n");
398 while (*p
>= '0' && *p
<= '9')
401 /* There is no number here. (e.g. "cond a == b"). */
403 /* Skip non-numeric token */
404 while (*p
&& !isspace((int) *p
))
406 /* Return zero, which caller must interpret as error. */
412 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
414 /* Trailing junk: return 0 and let caller print error msg. */
415 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
426 /* Like get_number_trailer, but don't allow a trailer. */
428 get_number (char **pp
)
430 return get_number_trailer (pp
, '\0');
433 /* Parse a number or a range.
434 * A number will be of the form handled by get_number.
435 * A range will be of the form <number1> - <number2>, and
436 * will represent all the integers between number1 and number2,
439 * While processing a range, this fuction is called iteratively;
440 * At each call it will return the next value in the range.
442 * At the beginning of parsing a range, the char pointer PP will
443 * be advanced past <number1> and left pointing at the '-' token.
444 * Subsequent calls will not advance the pointer until the range
445 * is completed. The call that completes the range will advance
446 * pointer PP past <number2>.
450 get_number_or_range (char **pp
)
452 static int last_retval
, end_value
;
453 static char *end_ptr
;
454 static int in_range
= 0;
458 /* Default case: pp is pointing either to a solo number,
459 or to the first number of a range. */
460 last_retval
= get_number_trailer (pp
, '-');
465 /* This is the start of a range (<number1> - <number2>).
466 Skip the '-', parse and remember the second number,
467 and also remember the end of the final token. */
471 while (isspace ((int) *end_ptr
))
472 end_ptr
++; /* skip white space */
473 end_value
= get_number (temp
);
474 if (end_value
< last_retval
)
476 error ("inverted range");
478 else if (end_value
== last_retval
)
480 /* degenerate range (number1 == number2). Advance the
481 token pointer so that the range will be treated as a
490 error ("negative value");
493 /* pp points to the '-' that betokens a range. All
494 number-parsing has already been done. Return the next
495 integer value (one greater than the saved previous value).
496 Do not advance the token pointer 'pp' until the end of range
499 if (++last_retval
== end_value
)
501 /* End of range reached; advance token pointer. */
511 /* condition N EXP -- set break condition of breakpoint N to EXP. */
514 condition_command (char *arg
, int from_tty
)
516 register struct breakpoint
*b
;
521 error_no_arg ("breakpoint number");
524 bnum
= get_number (&p
);
526 error ("Bad breakpoint argument: '%s'", arg
);
529 if (b
->number
== bnum
)
536 if (b
->cond_string
!= NULL
)
537 xfree (b
->cond_string
);
542 b
->cond_string
= NULL
;
544 printf_filtered ("Breakpoint %d now unconditional.\n", bnum
);
549 /* I don't know if it matters whether this is the string the user
550 typed in or the decompiled expression. */
551 b
->cond_string
= savestring (arg
, strlen (arg
));
552 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->address
), 0);
554 error ("Junk at end of expression");
556 breakpoints_changed ();
560 error ("No breakpoint number %d.", bnum
);
565 commands_command (char *arg
, int from_tty
)
567 register struct breakpoint
*b
;
570 struct command_line
*l
;
572 /* If we allowed this, we would have problems with when to
573 free the storage, if we change the commands currently
576 if (executing_breakpoint_commands
)
577 error ("Can't use the \"commands\" command among a breakpoint's commands.");
580 bnum
= get_number (&p
);
583 error ("Unexpected extra arguments following breakpoint number.");
586 if (b
->number
== bnum
)
590 "Type commands for when breakpoint %d is hit, one per line.",
592 l
= read_command_lines (tmpbuf
, from_tty
);
593 free_command_lines (&b
->commands
);
595 breakpoints_changed ();
598 error ("No breakpoint number %d.", bnum
);
601 /* Like target_read_memory() but if breakpoints are inserted, return
602 the shadow contents instead of the breakpoints themselves.
604 Read "memory data" from whatever target or inferior we have.
605 Returns zero if successful, errno value if not. EIO is used
606 for address out of bounds. If breakpoints are inserted, returns
607 shadow contents, not the breakpoints themselves. From breakpoint.c. */
610 read_memory_nobpt (CORE_ADDR memaddr
, char *myaddr
, unsigned len
)
613 struct breakpoint
*b
;
614 CORE_ADDR bp_addr
= 0;
617 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
618 /* No breakpoints on this machine. */
619 return target_read_memory (memaddr
, myaddr
, len
);
623 if (b
->type
== bp_none
)
624 warning ("reading through apparently deleted breakpoint #%d?",
627 /* memory breakpoint? */
628 if (b
->type
== bp_watchpoint
629 || b
->type
== bp_hardware_watchpoint
630 || b
->type
== bp_read_watchpoint
631 || b
->type
== bp_access_watchpoint
)
636 /* Addresses and length of the part of the breakpoint that
638 /* XXXX The m68k, sh and h8300 have different local and remote
639 breakpoint values. BREAKPOINT_FROM_PC still manages to
640 correctly determine the breakpoints memory address and size
641 for these targets. */
642 bp_addr
= b
->address
;
644 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
649 if (bp_addr
+ bp_size
<= memaddr
)
650 /* The breakpoint is entirely before the chunk of memory we
653 if (bp_addr
>= memaddr
+ len
)
654 /* The breakpoint is entirely after the chunk of memory we are
657 /* Copy the breakpoint from the shadow contents, and recurse for
658 the things before and after. */
660 /* Offset within shadow_contents. */
663 if (bp_addr
< memaddr
)
665 /* Only copy the second part of the breakpoint. */
666 bp_size
-= memaddr
- bp_addr
;
667 bptoffset
= memaddr
- bp_addr
;
671 if (bp_addr
+ bp_size
> memaddr
+ len
)
673 /* Only copy the first part of the breakpoint. */
674 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
677 memcpy (myaddr
+ bp_addr
- memaddr
,
678 b
->shadow_contents
+ bptoffset
, bp_size
);
680 if (bp_addr
> memaddr
)
682 /* Copy the section of memory before the breakpoint. */
683 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
688 if (bp_addr
+ bp_size
< memaddr
+ len
)
690 /* Copy the section of memory after the breakpoint. */
691 status
= read_memory_nobpt (bp_addr
+ bp_size
,
692 myaddr
+ bp_addr
+ bp_size
- memaddr
,
693 memaddr
+ len
- (bp_addr
+ bp_size
));
700 /* Nothing overlaps. Just call read_memory_noerr. */
701 return target_read_memory (memaddr
, myaddr
, len
);
705 /* insert_breakpoints is used when starting or continuing the program.
706 remove_breakpoints is used when the program stops.
707 Both return zero if successful,
708 or an `errno' value if could not write the inferior. */
711 insert_breakpoints (void)
713 register struct breakpoint
*b
, *temp
;
714 int return_val
= 0; /* return success code. */
716 int disabled_breaks
= 0;
718 static char message1
[] = "Error inserting catchpoint %d:\n";
719 static char message
[sizeof (message1
) + 30];
722 ALL_BREAKPOINTS_SAFE (b
, temp
)
724 if (b
->enable
== permanent
)
725 /* Permanent breakpoints cannot be inserted or removed. */
727 else if (b
->type
!= bp_watchpoint
728 && b
->type
!= bp_hardware_watchpoint
729 && b
->type
!= bp_read_watchpoint
730 && b
->type
!= bp_access_watchpoint
731 && b
->type
!= bp_catch_fork
732 && b
->type
!= bp_catch_vfork
733 && b
->type
!= bp_catch_exec
734 && b
->type
!= bp_catch_throw
735 && b
->type
!= bp_catch_catch
736 && b
->enable
!= disabled
737 && b
->enable
!= shlib_disabled
738 && b
->enable
!= call_disabled
742 if (b
->type
== bp_hardware_breakpoint
)
743 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
746 /* Check to see if breakpoint is in an overlay section;
747 if so, we should set the breakpoint at the LMA address.
748 Only if the section is currently mapped should we ALSO
749 set a break at the VMA address. */
750 if (overlay_debugging
&& b
->section
&&
751 section_is_overlay (b
->section
))
755 addr
= overlay_unmapped_address (b
->address
, b
->section
);
756 val
= target_insert_breakpoint (addr
, b
->shadow_contents
);
757 /* This would be the time to check val, to see if the
758 breakpoint write to the load address succeeded.
759 However, this might be an ordinary occurrance, eg. if
760 the unmapped overlay is in ROM. */
761 val
= 0; /* in case unmapped address failed */
762 if (section_is_mapped (b
->section
))
763 val
= target_insert_breakpoint (b
->address
,
766 else /* ordinary (non-overlay) address */
767 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
771 /* Can't set the breakpoint. */
772 #if defined (DISABLE_UNSETTABLE_BREAK)
773 if (DISABLE_UNSETTABLE_BREAK (b
->address
))
775 /* See also: disable_breakpoints_in_shlibs. */
777 b
->enable
= shlib_disabled
;
778 if (!disabled_breaks
)
780 target_terminal_ours_for_output ();
781 warning ("Cannot insert breakpoint %d:", b
->number
);
782 warning ("Temporarily disabling shared library breakpoints:");
785 warning ("breakpoint #%d ", b
->number
);
790 target_terminal_ours_for_output ();
791 warning ("Cannot insert breakpoint %d:", b
->number
);
792 #ifdef ONE_PROCESS_WRITETEXT
793 warning ("The same program may be running in another process.");
795 memory_error (val
, b
->address
); /* which bombs us out */
802 return_val
= val
; /* remember failure */
804 else if (ep_is_exception_catchpoint (b
)
805 && b
->enable
!= disabled
806 && b
->enable
!= shlib_disabled
807 && b
->enable
!= call_disabled
812 /* If we get here, we must have a callback mechanism for exception
813 events -- with g++ style embedded label support, we insert
814 ordinary breakpoints and not catchpoints. */
815 /* Format possible error message */
816 sprintf (message
, message1
, b
->number
);
818 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
821 /* Couldn't set breakpoint for some reason */
822 target_terminal_ours_for_output ();
823 warning ("Cannot insert catchpoint %d; disabling it.",
825 b
->enable
= disabled
;
829 /* Bp set, now make sure callbacks are enabled */
831 args_for_catchpoint_enable args
;
832 args
.kind
= b
->type
== bp_catch_catch
?
833 EX_EVENT_CATCH
: EX_EVENT_THROW
;
835 val
= catch_errors (cover_target_enable_exception_callback
,
837 message
, RETURN_MASK_ALL
);
838 if (val
!= 0 && val
!= -1)
842 /* Check if something went wrong; val == 0 can be ignored */
845 /* something went wrong */
846 target_terminal_ours_for_output ();
847 warning ("Cannot insert catchpoint %d; disabling it.",
849 b
->enable
= disabled
;
854 return_val
= val
; /* remember failure */
857 else if ((b
->type
== bp_hardware_watchpoint
||
858 b
->type
== bp_read_watchpoint
||
859 b
->type
== bp_access_watchpoint
)
860 && b
->enable
== enabled
861 && b
->disposition
!= del_at_next_stop
865 struct frame_info
*saved_frame
;
866 int saved_level
, within_current_scope
;
867 value_ptr mark
= value_mark ();
870 /* Save the current frame and level so we can restore it after
871 evaluating the watchpoint expression on its own frame. */
872 saved_frame
= selected_frame
;
873 saved_level
= selected_frame_level
;
875 /* Determine if the watchpoint is within scope. */
876 if (b
->exp_valid_block
== NULL
)
877 within_current_scope
= 1;
880 struct frame_info
*fi
;
882 /* There might be no current frame at this moment if we are
883 resuming from a step over a breakpoint.
884 Set up current frame before trying to find the watchpoint
886 get_current_frame ();
887 fi
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
888 within_current_scope
= (fi
!= NULL
);
889 if (within_current_scope
)
890 select_frame (fi
, -1);
893 if (within_current_scope
)
895 /* Evaluate the expression and cut the chain of values
896 produced off from the value chain.
898 Make sure the value returned isn't lazy; we use
899 laziness to determine what memory GDB actually needed
900 in order to compute the value of the expression. */
901 v
= evaluate_expression (b
->exp
);
903 value_release_to_mark (mark
);
908 /* Look at each value on the value chain. */
909 for (; v
; v
= v
->next
)
911 /* If it's a memory location, and GDB actually needed
912 its contents to evaluate the expression, then we
914 if (VALUE_LVAL (v
) == lval_memory
917 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
919 /* We only watch structs and arrays if user asked
920 for it explicitly, never if they just happen to
921 appear in the middle of some value chain. */
922 if (v
== b
->val_chain
923 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
924 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
929 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
930 len
= TYPE_LENGTH (VALUE_TYPE (v
));
932 if (b
->type
== bp_read_watchpoint
)
934 else if (b
->type
== bp_access_watchpoint
)
937 val
= target_insert_watchpoint (addr
, len
, type
);
940 /* Don't exit the loop, try to insert
941 every value on the value chain. That's
942 because we will be removing all the
943 watches below, and removing a
944 watchpoint we didn't insert could have
952 /* Failure to insert a watchpoint on any memory value in the
953 value chain brings us here. */
956 remove_breakpoint (b
, mark_uninserted
);
957 warning ("Could not insert hardware watchpoint %d.",
964 printf_filtered ("Hardware watchpoint %d deleted ", b
->number
);
965 printf_filtered ("because the program has left the block \n");
966 printf_filtered ("in which its expression is valid.\n");
967 if (b
->related_breakpoint
)
968 b
->related_breakpoint
->disposition
= del_at_next_stop
;
969 b
->disposition
= del_at_next_stop
;
972 /* Restore the frame and level. */
973 if ((saved_frame
!= selected_frame
) ||
974 (saved_level
!= selected_frame_level
))
975 select_frame (saved_frame
, saved_level
);
978 return_val
= val
; /* remember failure */
980 else if ((b
->type
== bp_catch_fork
981 || b
->type
== bp_catch_vfork
982 || b
->type
== bp_catch_exec
)
983 && b
->enable
== enabled
991 val
= target_insert_fork_catchpoint (inferior_pid
);
994 val
= target_insert_vfork_catchpoint (inferior_pid
);
997 val
= target_insert_exec_catchpoint (inferior_pid
);
1000 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1005 target_terminal_ours_for_output ();
1006 warning ("Cannot insert catchpoint %d.", b
->number
);
1012 return_val
= val
; /* remember failure */
1021 remove_breakpoints (void)
1023 register struct breakpoint
*b
;
1030 val
= remove_breakpoint (b
, mark_uninserted
);
1039 remove_hw_watchpoints (void)
1041 register struct breakpoint
*b
;
1047 && (b
->type
== bp_hardware_watchpoint
1048 || b
->type
== bp_read_watchpoint
1049 || b
->type
== bp_access_watchpoint
))
1051 val
= remove_breakpoint (b
, mark_uninserted
);
1060 reattach_breakpoints (int pid
)
1062 register struct breakpoint
*b
;
1064 int saved_inferior_pid
= inferior_pid
;
1066 /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
1067 inferior_pid
= pid
; /* Because remove_breakpoint will use this global. */
1072 remove_breakpoint (b
, mark_inserted
);
1073 if (b
->type
== bp_hardware_breakpoint
)
1074 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
1076 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
1079 inferior_pid
= saved_inferior_pid
;
1084 inferior_pid
= saved_inferior_pid
;
1089 update_breakpoints_after_exec (void)
1091 struct breakpoint
*b
;
1092 struct breakpoint
*temp
;
1094 /* Doing this first prevents the badness of having delete_breakpoint()
1095 write a breakpoint's current "shadow contents" to lift the bp. That
1096 shadow is NOT valid after an exec()! */
1097 mark_breakpoints_out ();
1099 ALL_BREAKPOINTS_SAFE (b
, temp
)
1101 /* Solib breakpoints must be explicitly reset after an exec(). */
1102 if (b
->type
== bp_shlib_event
)
1104 delete_breakpoint (b
);
1108 /* Thread event breakpoints must be set anew after an exec(). */
1109 if (b
->type
== bp_thread_event
)
1111 delete_breakpoint (b
);
1115 /* Step-resume breakpoints are meaningless after an exec(). */
1116 if (b
->type
== bp_step_resume
)
1118 delete_breakpoint (b
);
1122 /* Ditto the sigtramp handler breakpoints. */
1123 if (b
->type
== bp_through_sigtramp
)
1125 delete_breakpoint (b
);
1129 /* Ditto the exception-handling catchpoints. */
1130 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1132 delete_breakpoint (b
);
1136 /* Don't delete an exec catchpoint, because else the inferior
1137 won't stop when it ought!
1139 Similarly, we probably ought to keep vfork catchpoints, 'cause
1140 on this target, we may not be able to stop when the vfork is
1141 seen, but only when the subsequent exec is seen. (And because
1142 deleting fork catchpoints here but not vfork catchpoints will
1143 seem mysterious to users, keep those too.)
1145 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1146 target address field, if any, is sufficient to have it be reset
1147 automagically. Certainly on HP-UX that's true. */
1148 if ((b
->type
== bp_catch_exec
) ||
1149 (b
->type
== bp_catch_vfork
) ||
1150 (b
->type
== bp_catch_fork
))
1152 b
->address
= (CORE_ADDR
) NULL
;
1156 /* bp_finish is a special case. The only way we ought to be able
1157 to see one of these when an exec() has happened, is if the user
1158 caught a vfork, and then said "finish". Ordinarily a finish just
1159 carries them to the call-site of the current callee, by setting
1160 a temporary bp there and resuming. But in this case, the finish
1161 will carry them entirely through the vfork & exec.
1163 We don't want to allow a bp_finish to remain inserted now. But
1164 we can't safely delete it, 'cause finish_command has a handle to
1165 the bp on a bpstat, and will later want to delete it. There's a
1166 chance (and I've seen it happen) that if we delete the bp_finish
1167 here, that its storage will get reused by the time finish_command
1168 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1169 We really must allow finish_command to delete a bp_finish.
1171 In the absense of a general solution for the "how do we know
1172 it's safe to delete something others may have handles to?"
1173 problem, what we'll do here is just uninsert the bp_finish, and
1174 let finish_command delete it.
1176 (We know the bp_finish is "doomed" in the sense that it's
1177 momentary, and will be deleted as soon as finish_command sees
1178 the inferior stopped. So it doesn't matter that the bp's
1179 address is probably bogus in the new a.out, unlike e.g., the
1180 solib breakpoints.) */
1182 if (b
->type
== bp_finish
)
1187 /* Without a symbolic address, we have little hope of the
1188 pre-exec() address meaning the same thing in the post-exec()
1190 if (b
->addr_string
== NULL
)
1192 delete_breakpoint (b
);
1196 /* If this breakpoint has survived the above battery of checks, then
1197 it must have a symbolic address. Be sure that it gets reevaluated
1198 to a target address, rather than reusing the old evaluation. */
1199 b
->address
= (CORE_ADDR
) NULL
;
1204 detach_breakpoints (int pid
)
1206 register struct breakpoint
*b
;
1208 int saved_inferior_pid
= inferior_pid
;
1210 if (pid
== inferior_pid
)
1211 error ("Cannot detach breakpoints of inferior_pid");
1213 /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */
1214 inferior_pid
= pid
; /* Because remove_breakpoint will use this global. */
1219 val
= remove_breakpoint (b
, mark_inserted
);
1222 inferior_pid
= saved_inferior_pid
;
1227 inferior_pid
= saved_inferior_pid
;
1232 remove_breakpoint (struct breakpoint
*b
, insertion_state_t is
)
1236 if (b
->enable
== permanent
)
1237 /* Permanent breakpoints cannot be inserted or removed. */
1240 if (b
->type
== bp_none
)
1241 warning ("attempted to remove apparently deleted breakpoint #%d?",
1244 if (b
->type
!= bp_watchpoint
1245 && b
->type
!= bp_hardware_watchpoint
1246 && b
->type
!= bp_read_watchpoint
1247 && b
->type
!= bp_access_watchpoint
1248 && b
->type
!= bp_catch_fork
1249 && b
->type
!= bp_catch_vfork
1250 && b
->type
!= bp_catch_exec
1251 && b
->type
!= bp_catch_catch
1252 && b
->type
!= bp_catch_throw
)
1254 if (b
->type
== bp_hardware_breakpoint
)
1255 val
= target_remove_hw_breakpoint (b
->address
, b
->shadow_contents
);
1258 /* Check to see if breakpoint is in an overlay section;
1259 if so, we should remove the breakpoint at the LMA address.
1260 If that is not equal to the raw address, then we should
1261 presumably remove the breakpoint there as well. */
1262 if (overlay_debugging
&& b
->section
&&
1263 section_is_overlay (b
->section
))
1267 addr
= overlay_unmapped_address (b
->address
, b
->section
);
1268 val
= target_remove_breakpoint (addr
, b
->shadow_contents
);
1269 /* This would be the time to check val, to see if the
1270 shadow breakpoint write to the load address succeeded.
1271 However, this might be an ordinary occurrance, eg. if
1272 the unmapped overlay is in ROM. */
1273 val
= 0; /* in case unmapped address failed */
1274 if (section_is_mapped (b
->section
))
1275 val
= target_remove_breakpoint (b
->address
,
1276 b
->shadow_contents
);
1278 else /* ordinary (non-overlay) address */
1279 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1283 b
->inserted
= (is
== mark_inserted
);
1285 else if ((b
->type
== bp_hardware_watchpoint
||
1286 b
->type
== bp_read_watchpoint
||
1287 b
->type
== bp_access_watchpoint
)
1288 && b
->enable
== enabled
1293 b
->inserted
= (is
== mark_inserted
);
1294 /* Walk down the saved value chain. */
1295 for (v
= b
->val_chain
; v
; v
= v
->next
)
1297 /* For each memory reference remove the watchpoint
1299 if (VALUE_LVAL (v
) == lval_memory
1300 && ! VALUE_LAZY (v
))
1302 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
1304 if (v
== b
->val_chain
1305 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1306 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1311 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
1312 len
= TYPE_LENGTH (VALUE_TYPE (v
));
1314 if (b
->type
== bp_read_watchpoint
)
1316 else if (b
->type
== bp_access_watchpoint
)
1319 val
= target_remove_watchpoint (addr
, len
, type
);
1326 /* Failure to remove any of the hardware watchpoints comes here. */
1327 if ((is
== mark_uninserted
) && (b
->inserted
))
1328 warning ("Could not remove hardware watchpoint %d.",
1331 /* Free the saved value chain. We will construct a new one
1332 the next time the watchpoint is inserted. */
1333 for (v
= b
->val_chain
; v
; v
= n
)
1338 b
->val_chain
= NULL
;
1340 else if ((b
->type
== bp_catch_fork
||
1341 b
->type
== bp_catch_vfork
||
1342 b
->type
== bp_catch_exec
)
1343 && b
->enable
== enabled
1350 val
= target_remove_fork_catchpoint (inferior_pid
);
1352 case bp_catch_vfork
:
1353 val
= target_remove_vfork_catchpoint (inferior_pid
);
1356 val
= target_remove_exec_catchpoint (inferior_pid
);
1359 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1364 b
->inserted
= (is
== mark_inserted
);
1366 else if ((b
->type
== bp_catch_catch
||
1367 b
->type
== bp_catch_throw
)
1368 && b
->enable
== enabled
1372 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1375 b
->inserted
= (is
== mark_inserted
);
1377 else if (ep_is_exception_catchpoint (b
)
1378 && b
->inserted
/* sometimes previous insert doesn't happen */
1379 && b
->enable
== enabled
1383 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1387 b
->inserted
= (is
== mark_inserted
);
1393 /* Clear the "inserted" flag in all breakpoints. */
1396 mark_breakpoints_out (void)
1398 register struct breakpoint
*b
;
1404 /* Clear the "inserted" flag in all breakpoints and delete any
1405 breakpoints which should go away between runs of the program.
1407 Plus other such housekeeping that has to be done for breakpoints
1410 Note: this function gets called at the end of a run (by
1411 generic_mourn_inferior) and when a run begins (by
1412 init_wait_for_inferior). */
1417 breakpoint_init_inferior (enum inf_context context
)
1419 register struct breakpoint
*b
, *temp
;
1420 static int warning_needed
= 0;
1422 ALL_BREAKPOINTS_SAFE (b
, temp
)
1429 case bp_watchpoint_scope
:
1431 /* If the call dummy breakpoint is at the entry point it will
1432 cause problems when the inferior is rerun, so we better
1435 Also get rid of scope breakpoints. */
1436 delete_breakpoint (b
);
1440 case bp_hardware_watchpoint
:
1441 case bp_read_watchpoint
:
1442 case bp_access_watchpoint
:
1444 /* Likewise for watchpoints on local expressions. */
1445 if (b
->exp_valid_block
!= NULL
)
1446 delete_breakpoint (b
);
1449 /* Likewise for exception catchpoints in dynamic-linked
1450 executables where required */
1451 if (ep_is_exception_catchpoint (b
) &&
1452 exception_catchpoints_are_fragile
)
1455 delete_breakpoint (b
);
1461 if (exception_catchpoints_are_fragile
)
1462 exception_support_initialized
= 0;
1464 /* Don't issue the warning unless it's really needed... */
1465 if (warning_needed
&& (context
!= inf_exited
))
1467 warning ("Exception catchpoints from last run were deleted.");
1468 warning ("You must reinsert them explicitly.");
1473 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1474 exists at PC. It returns ordinary_breakpoint_here if it's an
1475 ordinary breakpoint, or permanent_breakpoint_here if it's a
1476 permanent breakpoint.
1477 - When continuing from a location with an ordinary breakpoint, we
1478 actually single step once before calling insert_breakpoints.
1479 - When continuing from a localion with a permanent breakpoint, we
1480 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1481 the target, to advance the PC past the breakpoint. */
1483 enum breakpoint_here
1484 breakpoint_here_p (CORE_ADDR pc
)
1486 register struct breakpoint
*b
;
1487 int any_breakpoint_here
= 0;
1490 if ((b
->enable
== enabled
1491 || b
->enable
== permanent
)
1492 && b
->address
== pc
) /* bp is enabled and matches pc */
1494 if (overlay_debugging
&&
1495 section_is_overlay (b
->section
) &&
1496 !section_is_mapped (b
->section
))
1497 continue; /* unmapped overlay -- can't be a match */
1498 else if (b
->enable
== permanent
)
1499 return permanent_breakpoint_here
;
1501 any_breakpoint_here
= 1;
1504 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1508 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1509 but it only returns true if there is actually a breakpoint inserted
1513 breakpoint_inserted_here_p (CORE_ADDR pc
)
1515 register struct breakpoint
*b
;
1519 && b
->address
== pc
) /* bp is inserted and matches pc */
1521 if (overlay_debugging
&&
1522 section_is_overlay (b
->section
) &&
1523 !section_is_mapped (b
->section
))
1524 continue; /* unmapped overlay -- can't be a match */
1532 /* Return nonzero if FRAME is a dummy frame. We can't use
1533 PC_IN_CALL_DUMMY because figuring out the saved SP would take too
1534 much time, at least using get_saved_register on the 68k. This
1535 means that for this function to work right a port must use the
1536 bp_call_dummy breakpoint. */
1539 frame_in_dummy (struct frame_info
*frame
)
1541 struct breakpoint
*b
;
1546 if (USE_GENERIC_DUMMY_FRAMES
)
1547 return generic_pc_in_call_dummy (frame
->pc
, frame
->frame
, frame
->frame
);
1551 if (b
->type
== bp_call_dummy
1552 && b
->frame
== frame
->frame
1553 /* We need to check the PC as well as the frame on the sparc,
1554 for signals.exp in the testsuite. */
1557 - SIZEOF_CALL_DUMMY_WORDS
/ sizeof (LONGEST
) * REGISTER_SIZE
))
1558 && frame
->pc
<= b
->address
)
1564 /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
1565 PC is valid for process/thread PID. */
1568 breakpoint_thread_match (CORE_ADDR pc
, int pid
)
1570 struct breakpoint
*b
;
1573 thread
= pid_to_thread_id (pid
);
1576 if (b
->enable
!= disabled
1577 && b
->enable
!= shlib_disabled
1578 && b
->enable
!= call_disabled
1580 && (b
->thread
== -1 || b
->thread
== thread
))
1582 if (overlay_debugging
&&
1583 section_is_overlay (b
->section
) &&
1584 !section_is_mapped (b
->section
))
1585 continue; /* unmapped overlay -- can't be a match */
1594 /* bpstat stuff. External routines' interfaces are documented
1598 ep_is_catchpoint (struct breakpoint
*ep
)
1601 (ep
->type
== bp_catch_load
)
1602 || (ep
->type
== bp_catch_unload
)
1603 || (ep
->type
== bp_catch_fork
)
1604 || (ep
->type
== bp_catch_vfork
)
1605 || (ep
->type
== bp_catch_exec
)
1606 || (ep
->type
== bp_catch_catch
)
1607 || (ep
->type
== bp_catch_throw
);
1609 /* ??rehrauer: Add more kinds here, as are implemented... */
1613 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1616 (ep
->type
== bp_catch_load
)
1617 || (ep
->type
== bp_catch_unload
);
1621 ep_is_exception_catchpoint (struct breakpoint
*ep
)
1624 (ep
->type
== bp_catch_catch
)
1625 || (ep
->type
== bp_catch_throw
);
1628 /* Clear a bpstat so that it says we are not at any breakpoint.
1629 Also free any storage that is part of a bpstat. */
1632 bpstat_clear (bpstat
*bsp
)
1643 if (p
->old_val
!= NULL
)
1644 value_free (p
->old_val
);
1651 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1652 is part of the bpstat is copied as well. */
1655 bpstat_copy (bpstat bs
)
1659 bpstat retval
= NULL
;
1664 for (; bs
!= NULL
; bs
= bs
->next
)
1666 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1667 memcpy (tmp
, bs
, sizeof (*tmp
));
1669 /* This is the first thing in the chain. */
1679 /* Find the bpstat associated with this breakpoint */
1682 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1687 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1689 if (bsp
->breakpoint_at
== breakpoint
)
1695 /* Find a step_resume breakpoint associated with this bpstat.
1696 (If there are multiple step_resume bp's on the list, this function
1697 will arbitrarily pick one.)
1699 It is an error to use this function if BPSTAT doesn't contain a
1700 step_resume breakpoint.
1702 See wait_for_inferior's use of this function. */
1704 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1707 error ("Internal error (bpstat_find_step_resume_breakpoint)");
1709 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1711 if ((bsp
->breakpoint_at
!= NULL
) &&
1712 (bsp
->breakpoint_at
->type
== bp_step_resume
))
1713 return bsp
->breakpoint_at
;
1716 error ("Internal error (no step_resume breakpoint found)");
1720 /* Return the breakpoint number of the first breakpoint we are stopped
1721 at. *BSP upon return is a bpstat which points to the remaining
1722 breakpoints stopped at (but which is not guaranteed to be good for
1723 anything but further calls to bpstat_num).
1724 Return 0 if passed a bpstat which does not indicate any breakpoints. */
1727 bpstat_num (bpstat
*bsp
)
1729 struct breakpoint
*b
;
1732 return 0; /* No more breakpoint values */
1735 b
= (*bsp
)->breakpoint_at
;
1736 *bsp
= (*bsp
)->next
;
1738 return -1; /* breakpoint that's been deleted since */
1740 return b
->number
; /* We have its number */
1744 /* Modify BS so that the actions will not be performed. */
1747 bpstat_clear_actions (bpstat bs
)
1749 for (; bs
!= NULL
; bs
= bs
->next
)
1751 bs
->commands
= NULL
;
1752 if (bs
->old_val
!= NULL
)
1754 value_free (bs
->old_val
);
1760 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1763 cleanup_executing_breakpoints (PTR ignore
)
1765 executing_breakpoint_commands
= 0;
1768 /* Execute all the commands associated with all the breakpoints at this
1769 location. Any of these commands could cause the process to proceed
1770 beyond this point, etc. We look out for such changes by checking
1771 the global "breakpoint_proceeded" after each command. */
1774 bpstat_do_actions (bpstat
*bsp
)
1777 struct cleanup
*old_chain
;
1778 struct command_line
*cmd
;
1780 /* Avoid endless recursion if a `source' command is contained
1782 if (executing_breakpoint_commands
)
1785 executing_breakpoint_commands
= 1;
1786 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
1789 /* Note that (as of this writing), our callers all appear to
1790 be passing us the address of global stop_bpstat. And, if
1791 our calls to execute_control_command cause the inferior to
1792 proceed, that global (and hence, *bsp) will change.
1794 We must be careful to not touch *bsp unless the inferior
1795 has not proceeded. */
1797 /* This pointer will iterate over the list of bpstat's. */
1800 breakpoint_proceeded
= 0;
1801 for (; bs
!= NULL
; bs
= bs
->next
)
1806 execute_control_command (cmd
);
1808 if (breakpoint_proceeded
)
1813 if (breakpoint_proceeded
)
1814 /* The inferior is proceeded by the command; bomb out now.
1815 The bpstat chain has been blown away by wait_for_inferior.
1816 But since execution has stopped again, there is a new bpstat
1817 to look at, so start over. */
1820 bs
->commands
= NULL
;
1823 executing_breakpoint_commands
= 0;
1824 discard_cleanups (old_chain
);
1827 /* This is the normal print function for a bpstat. In the future,
1828 much of this logic could (should?) be moved to bpstat_stop_status,
1829 by having it set different print_it values.
1831 Current scheme: When we stop, bpstat_print() is called. It loops
1832 through the bpstat list of things causing this stop, calling the
1833 print_bp_stop_message function on each one. The behavior of the
1834 print_bp_stop_message function depends on the print_it field of
1835 bpstat. If such field so indicates, call this function here.
1837 Return values from this routine (ultimately used by bpstat_print()
1838 and normal_stop() to decide what to do):
1839 PRINT_NOTHING: Means we already printed all we needed to print,
1840 don't print anything else.
1841 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
1842 that something to be followed by a location.
1843 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
1844 that something to be followed by a location.
1845 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
1848 static enum print_stop_action
1849 print_it_typical (bpstat bs
)
1852 struct cleanup
*old_chain
;
1853 struct ui_stream
*stb
;
1854 stb
= ui_out_stream_new (uiout
);
1855 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1857 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
1858 which has since been deleted. */
1859 if (bs
->breakpoint_at
== NULL
)
1860 return PRINT_UNKNOWN
;
1862 switch (bs
->breakpoint_at
->type
)
1865 case bp_hardware_breakpoint
:
1867 annotate_breakpoint (bs
->breakpoint_at
->number
);
1868 ui_out_text (uiout
, "\nBreakpoint ");
1869 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
1870 ui_out_field_string (uiout
, "reason", "breakpoint-hit");
1871 ui_out_field_int (uiout
, "bkptno", bs
->breakpoint_at
->number
);
1872 ui_out_text (uiout
, ", ");
1873 return PRINT_SRC_AND_LOC
;
1875 /* I think the user probably only wants to see one breakpoint
1876 number, not all of them. */
1877 annotate_breakpoint (bs
->breakpoint_at
->number
);
1878 printf_filtered ("\nBreakpoint %d, ", bs
->breakpoint_at
->number
);
1879 return PRINT_SRC_AND_LOC
;
1883 case bp_shlib_event
:
1884 /* Did we stop because the user set the stop_on_solib_events
1885 variable? (If so, we report this as a generic, "Stopped due
1886 to shlib event" message.) */
1887 printf_filtered ("Stopped due to shared library event\n");
1888 return PRINT_NOTHING
;
1891 case bp_thread_event
:
1892 /* Not sure how we will get here.
1893 GDB should not stop for these breakpoints. */
1894 printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n");
1895 return PRINT_NOTHING
;
1899 annotate_catchpoint (bs
->breakpoint_at
->number
);
1900 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1901 printf_filtered ("loaded");
1902 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1903 return PRINT_SRC_AND_LOC
;
1906 case bp_catch_unload
:
1907 annotate_catchpoint (bs
->breakpoint_at
->number
);
1908 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1909 printf_filtered ("unloaded");
1910 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1911 return PRINT_SRC_AND_LOC
;
1915 annotate_catchpoint (bs
->breakpoint_at
->number
);
1916 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1917 printf_filtered ("forked");
1918 printf_filtered (" process %d), ",
1919 bs
->breakpoint_at
->forked_inferior_pid
);
1920 return PRINT_SRC_AND_LOC
;
1923 case bp_catch_vfork
:
1924 annotate_catchpoint (bs
->breakpoint_at
->number
);
1925 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1926 printf_filtered ("vforked");
1927 printf_filtered (" process %d), ",
1928 bs
->breakpoint_at
->forked_inferior_pid
);
1929 return PRINT_SRC_AND_LOC
;
1933 annotate_catchpoint (bs
->breakpoint_at
->number
);
1934 printf_filtered ("\nCatchpoint %d (exec'd %s), ",
1935 bs
->breakpoint_at
->number
,
1936 bs
->breakpoint_at
->exec_pathname
);
1937 return PRINT_SRC_AND_LOC
;
1940 case bp_catch_catch
:
1941 if (current_exception_event
&&
1942 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
1944 annotate_catchpoint (bs
->breakpoint_at
->number
);
1945 printf_filtered ("\nCatchpoint %d (exception caught), ",
1946 bs
->breakpoint_at
->number
);
1947 printf_filtered ("throw location ");
1948 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1949 printf_filtered ("%s:%d",
1950 CURRENT_EXCEPTION_THROW_FILE
,
1951 CURRENT_EXCEPTION_THROW_LINE
);
1953 printf_filtered ("unknown");
1955 printf_filtered (", catch location ");
1956 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1957 printf_filtered ("%s:%d",
1958 CURRENT_EXCEPTION_CATCH_FILE
,
1959 CURRENT_EXCEPTION_CATCH_LINE
);
1961 printf_filtered ("unknown");
1963 printf_filtered ("\n");
1964 /* don't bother to print location frame info */
1965 return PRINT_SRC_ONLY
;
1969 /* really throw, some other bpstat will handle it */
1970 return PRINT_UNKNOWN
;
1974 case bp_catch_throw
:
1975 if (current_exception_event
&&
1976 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
1978 annotate_catchpoint (bs
->breakpoint_at
->number
);
1979 printf_filtered ("\nCatchpoint %d (exception thrown), ",
1980 bs
->breakpoint_at
->number
);
1981 printf_filtered ("throw location ");
1982 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1983 printf_filtered ("%s:%d",
1984 CURRENT_EXCEPTION_THROW_FILE
,
1985 CURRENT_EXCEPTION_THROW_LINE
);
1987 printf_filtered ("unknown");
1989 printf_filtered (", catch location ");
1990 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1991 printf_filtered ("%s:%d",
1992 CURRENT_EXCEPTION_CATCH_FILE
,
1993 CURRENT_EXCEPTION_CATCH_LINE
);
1995 printf_filtered ("unknown");
1997 printf_filtered ("\n");
1998 /* don't bother to print location frame info */
1999 return PRINT_SRC_ONLY
;
2003 /* really catch, some other bpstat will handle it */
2004 return PRINT_UNKNOWN
;
2009 case bp_hardware_watchpoint
:
2010 if (bs
->old_val
!= NULL
)
2012 annotate_watchpoint (bs
->breakpoint_at
->number
);
2014 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2015 ui_out_field_string (uiout
, "reason", "watchpoint-trigger");
2016 mention (bs
->breakpoint_at
);
2017 ui_out_list_begin (uiout
, "value");
2018 ui_out_text (uiout
, "\nOld value = ");
2019 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2020 ui_out_field_stream (uiout
, "old", stb
);
2021 ui_out_text (uiout
, "\nNew value = ");
2022 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2023 ui_out_field_stream (uiout
, "new", stb
);
2024 ui_out_list_end (uiout
);
2025 ui_out_text (uiout
, "\n");
2027 mention (bs
->breakpoint_at
);
2028 printf_filtered ("\nOld value = ");
2029 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2030 printf_filtered ("\nNew value = ");
2031 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2032 Val_pretty_default
);
2033 printf_filtered ("\n");
2035 value_free (bs
->old_val
);
2038 /* More than one watchpoint may have been triggered. */
2039 return PRINT_UNKNOWN
;
2042 case bp_read_watchpoint
:
2044 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2045 ui_out_field_string (uiout
, "reason", "read-watchpoint-trigger");
2046 mention (bs
->breakpoint_at
);
2047 ui_out_list_begin (uiout
, "value");
2048 ui_out_text (uiout
, "\nValue = ");
2049 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2050 ui_out_field_stream (uiout
, "value", stb
);
2051 ui_out_list_end (uiout
);
2052 ui_out_text (uiout
, "\n");
2054 mention (bs
->breakpoint_at
);
2055 printf_filtered ("\nValue = ");
2056 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2057 Val_pretty_default
);
2058 printf_filtered ("\n");
2060 return PRINT_UNKNOWN
;
2063 case bp_access_watchpoint
:
2065 if (bs
->old_val
!= NULL
)
2067 annotate_watchpoint (bs
->breakpoint_at
->number
);
2068 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2069 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2070 mention (bs
->breakpoint_at
);
2071 ui_out_list_begin (uiout
, "value");
2072 ui_out_text (uiout
, "\nOld value = ");
2073 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2074 ui_out_field_stream (uiout
, "old", stb
);
2075 value_free (bs
->old_val
);
2077 ui_out_text (uiout
, "\nNew value = ");
2081 mention (bs
->breakpoint_at
);
2082 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2083 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2084 ui_out_list_begin (uiout
, "value");
2085 ui_out_text (uiout
, "\nValue = ");
2087 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0,Val_pretty_default
);
2088 ui_out_field_stream (uiout
, "new", stb
);
2089 ui_out_list_end (uiout
);
2090 ui_out_text (uiout
, "\n");
2092 if (bs
->old_val
!= NULL
)
2094 annotate_watchpoint (bs
->breakpoint_at
->number
);
2095 mention (bs
->breakpoint_at
);
2096 printf_filtered ("\nOld value = ");
2097 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2098 value_free (bs
->old_val
);
2100 printf_filtered ("\nNew value = ");
2104 mention (bs
->breakpoint_at
);
2105 printf_filtered ("\nValue = ");
2107 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2108 Val_pretty_default
);
2109 printf_filtered ("\n");
2111 return PRINT_UNKNOWN
;
2114 /* Fall through, we don't deal with these types of breakpoints
2119 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2120 ui_out_field_string (uiout
, "reason", "function-finished");
2122 return PRINT_UNKNOWN
;
2127 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2128 ui_out_field_string (uiout
, "reason", "location-reached");
2130 return PRINT_UNKNOWN
;
2135 case bp_longjmp_resume
:
2136 case bp_step_resume
:
2137 case bp_through_sigtramp
:
2138 case bp_watchpoint_scope
:
2141 return PRINT_UNKNOWN
;
2145 /* Generic routine for printing messages indicating why we
2146 stopped. The behavior of this function depends on the value
2147 'print_it' in the bpstat structure. Under some circumstances we
2148 may decide not to print anything here and delegate the task to
2151 static enum print_stop_action
2152 print_bp_stop_message (bpstat bs
)
2154 switch (bs
->print_it
)
2157 /* Nothing should be printed for this bpstat entry. */
2158 return PRINT_UNKNOWN
;
2162 /* We still want to print the frame, but we already printed the
2163 relevant messages. */
2164 return PRINT_SRC_AND_LOC
;
2167 case print_it_normal
:
2168 /* Normal case, we handle everything in print_it_typical. */
2169 return print_it_typical (bs
);
2172 internal_error (__FILE__
, __LINE__
,
2173 "print_bp_stop_message: unrecognized enum value");
2178 /* Print a message indicating what happened. This is called from
2179 normal_stop(). The input to this routine is the head of the bpstat
2180 list - a list of the eventpoints that caused this stop. This
2181 routine calls the generic print routine for printing a message
2182 about reasons for stopping. This will print (for example) the
2183 "Breakpoint n," part of the output. The return value of this
2186 PRINT_UNKNOWN: Means we printed nothing
2187 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2188 code to print the location. An example is
2189 "Breakpoint 1, " which should be followed by
2191 PRINT_SRC_ONLY: Means we printed something, but there is no need
2192 to also print the location part of the message.
2193 An example is the catch/throw messages, which
2194 don't require a location appended to the end.
2195 PRINT_NOTHING: We have done some printing and we don't need any
2196 further info to be printed.*/
2198 enum print_stop_action
2199 bpstat_print (bpstat bs
)
2203 /* Maybe another breakpoint in the chain caused us to stop.
2204 (Currently all watchpoints go on the bpstat whether hit or not.
2205 That probably could (should) be changed, provided care is taken
2206 with respect to bpstat_explains_signal). */
2207 for (; bs
; bs
= bs
->next
)
2209 val
= print_bp_stop_message (bs
);
2210 if (val
== PRINT_SRC_ONLY
2211 || val
== PRINT_SRC_AND_LOC
2212 || val
== PRINT_NOTHING
)
2216 /* We reached the end of the chain, or we got a null BS to start
2217 with and nothing was printed. */
2218 return PRINT_UNKNOWN
;
2221 /* Evaluate the expression EXP and return 1 if value is zero.
2222 This is used inside a catch_errors to evaluate the breakpoint condition.
2223 The argument is a "struct expression *" that has been cast to char * to
2224 make it pass through catch_errors. */
2227 breakpoint_cond_eval (PTR exp
)
2229 value_ptr mark
= value_mark ();
2230 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2231 value_free_to_mark (mark
);
2235 /* Allocate a new bpstat and chain it to the current one. */
2238 bpstat_alloc (struct breakpoint
*b
, bpstat cbs
/* Current "bs" value */ )
2242 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2244 bs
->breakpoint_at
= b
;
2245 /* If the condition is false, etc., don't do the commands. */
2246 bs
->commands
= NULL
;
2248 bs
->print_it
= print_it_normal
;
2252 /* Possible return values for watchpoint_check (this can't be an enum
2253 because of check_errors). */
2254 /* The watchpoint has been deleted. */
2255 #define WP_DELETED 1
2256 /* The value has changed. */
2257 #define WP_VALUE_CHANGED 2
2258 /* The value has not changed. */
2259 #define WP_VALUE_NOT_CHANGED 3
2261 #define BP_TEMPFLAG 1
2262 #define BP_HARDWAREFLAG 2
2264 /* Check watchpoint condition. */
2267 watchpoint_check (PTR p
)
2269 bpstat bs
= (bpstat
) p
;
2270 struct breakpoint
*b
;
2271 struct frame_info
*fr
;
2272 int within_current_scope
;
2274 b
= bs
->breakpoint_at
;
2276 if (b
->exp_valid_block
== NULL
)
2277 within_current_scope
= 1;
2280 /* There is no current frame at this moment. If we're going to have
2281 any chance of handling watchpoints on local variables, we'll need
2282 the frame chain (so we can determine if we're in scope). */
2283 reinit_frame_cache ();
2284 fr
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
2285 within_current_scope
= (fr
!= NULL
);
2286 if (within_current_scope
)
2287 /* If we end up stopping, the current frame will get selected
2288 in normal_stop. So this call to select_frame won't affect
2290 select_frame (fr
, -1);
2293 if (within_current_scope
)
2295 /* We use value_{,free_to_}mark because it could be a
2296 *long* time before we return to the command level and
2297 call free_all_values. We can't call free_all_values because
2298 we might be in the middle of evaluating a function call. */
2300 value_ptr mark
= value_mark ();
2301 value_ptr new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2302 if (!value_equal (b
->val
, new_val
))
2304 release_value (new_val
);
2305 value_free_to_mark (mark
);
2306 bs
->old_val
= b
->val
;
2308 /* We will stop here */
2309 return WP_VALUE_CHANGED
;
2313 /* Nothing changed, don't do anything. */
2314 value_free_to_mark (mark
);
2315 /* We won't stop here */
2316 return WP_VALUE_NOT_CHANGED
;
2321 /* This seems like the only logical thing to do because
2322 if we temporarily ignored the watchpoint, then when
2323 we reenter the block in which it is valid it contains
2324 garbage (in the case of a function, it may have two
2325 garbage values, one before and one after the prologue).
2326 So we can't even detect the first assignment to it and
2327 watch after that (since the garbage may or may not equal
2328 the first value assigned). */
2329 /* We print all the stop information in print_it_typical(), but
2330 in this case, by the time we call print_it_typical() this bp
2331 will be deleted already. So we have no choice but print the
2332 information here. */
2334 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
2335 ui_out_field_string (uiout
, "reason", "watchpoint-scope");
2336 ui_out_text (uiout
, "\nWatchpoint ");
2337 ui_out_field_int (uiout
, "wpnum", bs
->breakpoint_at
->number
);
2338 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2339 which its expression is valid.\n");
2342 Watchpoint %d deleted because the program has left the block in\n\
2343 which its expression is valid.\n", bs
->breakpoint_at
->number
);
2346 if (b
->related_breakpoint
)
2347 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2348 b
->disposition
= del_at_next_stop
;
2354 /* Get a bpstat associated with having just stopped at address *PC
2355 and frame address CORE_ADDRESS. Update *PC to point at the
2356 breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
2357 if this is known to not be a real breakpoint (it could still be a
2358 watchpoint, though). */
2360 /* Determine whether we stopped at a breakpoint, etc, or whether we
2361 don't understand this stop. Result is a chain of bpstat's such that:
2363 if we don't understand the stop, the result is a null pointer.
2365 if we understand why we stopped, the result is not null.
2367 Each element of the chain refers to a particular breakpoint or
2368 watchpoint at which we have stopped. (We may have stopped for
2369 several reasons concurrently.)
2371 Each element of the chain has valid next, breakpoint_at,
2372 commands, FIXME??? fields. */
2375 bpstat_stop_status (CORE_ADDR
*pc
, int not_a_breakpoint
)
2377 register struct breakpoint
*b
, *temp
;
2379 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2380 int real_breakpoint
= 0;
2381 /* Root of the chain of bpstat's */
2382 struct bpstats root_bs
[1];
2383 /* Pointer to the last thing in the chain currently. */
2384 bpstat bs
= root_bs
;
2385 static char message1
[] =
2386 "Error evaluating expression for watchpoint %d\n";
2387 char message
[sizeof (message1
) + 30 /* slop */ ];
2389 /* Get the address where the breakpoint would have been. */
2390 bp_addr
= *pc
- (not_a_breakpoint
&& !SOFTWARE_SINGLE_STEP_P () ?
2391 0 : DECR_PC_AFTER_BREAK
);
2393 ALL_BREAKPOINTS_SAFE (b
, temp
)
2395 if (b
->enable
== disabled
2396 || b
->enable
== shlib_disabled
2397 || b
->enable
== call_disabled
)
2400 if (b
->type
!= bp_watchpoint
2401 && b
->type
!= bp_hardware_watchpoint
2402 && b
->type
!= bp_read_watchpoint
2403 && b
->type
!= bp_access_watchpoint
2404 && b
->type
!= bp_hardware_breakpoint
2405 && b
->type
!= bp_catch_fork
2406 && b
->type
!= bp_catch_vfork
2407 && b
->type
!= bp_catch_exec
2408 && b
->type
!= bp_catch_catch
2409 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2410 if (b
->address
!= bp_addr
|| /* address doesn't match or */
2411 (overlay_debugging
&& /* overlay doesn't match */
2412 section_is_overlay (b
->section
) &&
2413 !section_is_mapped (b
->section
)))
2416 if (b
->type
== bp_hardware_breakpoint
2417 && b
->address
!= (*pc
- DECR_PC_AFTER_HW_BREAK
))
2420 /* Is this a catchpoint of a load or unload? If so, did we
2421 get a load or unload of the specified library? If not,
2423 if ((b
->type
== bp_catch_load
)
2424 #if defined(SOLIB_HAVE_LOAD_EVENT)
2425 && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid
)
2426 || ((b
->dll_pathname
!= NULL
)
2427 && (strcmp (b
->dll_pathname
,
2428 SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid
))
2434 if ((b
->type
== bp_catch_unload
)
2435 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2436 && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid
)
2437 || ((b
->dll_pathname
!= NULL
)
2438 && (strcmp (b
->dll_pathname
,
2439 SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid
))
2445 if ((b
->type
== bp_catch_fork
)
2446 && !target_has_forked (inferior_pid
, &b
->forked_inferior_pid
))
2449 if ((b
->type
== bp_catch_vfork
)
2450 && !target_has_vforked (inferior_pid
, &b
->forked_inferior_pid
))
2453 if ((b
->type
== bp_catch_exec
)
2454 && !target_has_execd (inferior_pid
, &b
->exec_pathname
))
2457 if (ep_is_exception_catchpoint (b
) &&
2458 !(current_exception_event
= target_get_current_exception_event ()))
2461 /* Come here if it's a watchpoint, or if the break address matches */
2463 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2465 /* Watchpoints may change this, if not found to have triggered. */
2469 sprintf (message
, message1
, b
->number
);
2470 if (b
->type
== bp_watchpoint
||
2471 b
->type
== bp_hardware_watchpoint
)
2473 switch (catch_errors (watchpoint_check
, bs
, message
,
2477 /* We've already printed what needs to be printed. */
2478 /* Actually this is superfluous, because by the time we
2479 call print_it_typical() the wp will be already deleted,
2480 and the function will return immediately. */
2481 bs
->print_it
= print_it_done
;
2484 case WP_VALUE_CHANGED
:
2488 case WP_VALUE_NOT_CHANGED
:
2490 bs
->print_it
= print_it_noop
;
2497 /* Error from catch_errors. */
2498 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2499 if (b
->related_breakpoint
)
2500 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2501 b
->disposition
= del_at_next_stop
;
2502 /* We've already printed what needs to be printed. */
2503 bs
->print_it
= print_it_done
;
2509 else if (b
->type
== bp_read_watchpoint
||
2510 b
->type
== bp_access_watchpoint
)
2516 addr
= target_stopped_data_address ();
2519 for (v
= b
->val_chain
; v
; v
= v
->next
)
2521 if (VALUE_LVAL (v
) == lval_memory
2522 && ! VALUE_LAZY (v
))
2524 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
2526 if (v
== b
->val_chain
2527 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2528 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2532 vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
2533 /* Exact match not required. Within range is
2535 if (addr
>= vaddr
&&
2536 addr
< vaddr
+ TYPE_LENGTH (VALUE_TYPE (v
)))
2542 switch (catch_errors (watchpoint_check
, bs
, message
,
2546 /* We've already printed what needs to be printed. */
2547 bs
->print_it
= print_it_done
;
2550 case WP_VALUE_CHANGED
:
2551 if (b
->type
== bp_read_watchpoint
)
2553 /* Don't stop: read watchpoints shouldn't fire if
2554 the value has changed. This is for targets which
2555 cannot set read-only watchpoints. */
2556 bs
->print_it
= print_it_noop
;
2562 case WP_VALUE_NOT_CHANGED
:
2569 /* Error from catch_errors. */
2570 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2571 if (b
->related_breakpoint
)
2572 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2573 b
->disposition
= del_at_next_stop
;
2574 /* We've already printed what needs to be printed. */
2575 bs
->print_it
= print_it_done
;
2578 else /* found == 0 */
2580 /* This is a case where some watchpoint(s) triggered,
2581 but not at the address of this watchpoint (FOUND
2582 was left zero). So don't print anything for this
2584 bs
->print_it
= print_it_noop
;
2591 /* By definition, an encountered breakpoint is a triggered
2595 real_breakpoint
= 1;
2599 b
->frame
!= (get_current_frame ())->frame
)
2603 int value_is_zero
= 0;
2607 /* Need to select the frame, with all that implies
2608 so that the conditions will have the right context. */
2609 select_frame (get_current_frame (), 0);
2611 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2612 "Error in testing breakpoint condition:\n",
2614 /* FIXME-someday, should give breakpoint # */
2617 if (b
->cond
&& value_is_zero
)
2620 /* Don't consider this a hit. */
2623 else if (b
->ignore_count
> 0)
2626 annotate_ignore_count_change ();
2631 /* We will stop here */
2632 if (b
->disposition
== disable
)
2633 b
->enable
= disabled
;
2634 bs
->commands
= b
->commands
;
2638 (STREQ ("silent", bs
->commands
->line
) ||
2639 (xdb_commands
&& STREQ ("Q", bs
->commands
->line
))))
2641 bs
->commands
= bs
->commands
->next
;
2646 /* Print nothing for this entry if we dont stop or if we dont print. */
2647 if (bs
->stop
== 0 || bs
->print
== 0)
2648 bs
->print_it
= print_it_noop
;
2651 bs
->next
= NULL
; /* Terminate the chain */
2652 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2654 if (real_breakpoint
&& bs
)
2656 if (bs
->breakpoint_at
->type
== bp_hardware_breakpoint
)
2658 if (DECR_PC_AFTER_HW_BREAK
!= 0)
2660 *pc
= *pc
- DECR_PC_AFTER_HW_BREAK
;
2666 if (DECR_PC_AFTER_BREAK
!= 0 || must_shift_inst_regs
)
2669 #if defined (SHIFT_INST_REGS)
2671 #else /* No SHIFT_INST_REGS. */
2673 #endif /* No SHIFT_INST_REGS. */
2678 /* The value of a hardware watchpoint hasn't changed, but the
2679 intermediate memory locations we are watching may have. */
2680 if (bs
&& !bs
->stop
&&
2681 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
2682 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
2683 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
2685 remove_breakpoints ();
2686 insert_breakpoints ();
2691 /* Tell what to do about this bpstat. */
2693 bpstat_what (bpstat bs
)
2695 /* Classify each bpstat as one of the following. */
2698 /* This bpstat element has no effect on the main_action. */
2701 /* There was a watchpoint, stop but don't print. */
2704 /* There was a watchpoint, stop and print. */
2707 /* There was a breakpoint but we're not stopping. */
2710 /* There was a breakpoint, stop but don't print. */
2713 /* There was a breakpoint, stop and print. */
2716 /* We hit the longjmp breakpoint. */
2719 /* We hit the longjmp_resume breakpoint. */
2722 /* We hit the step_resume breakpoint. */
2725 /* We hit the through_sigtramp breakpoint. */
2728 /* We hit the shared library event breakpoint. */
2731 /* We caught a shared library event. */
2734 /* This is just used to count how many enums there are. */
2738 /* Here is the table which drives this routine. So that we can
2739 format it pretty, we define some abbreviations for the
2740 enum bpstat_what codes. */
2741 #define kc BPSTAT_WHAT_KEEP_CHECKING
2742 #define ss BPSTAT_WHAT_STOP_SILENT
2743 #define sn BPSTAT_WHAT_STOP_NOISY
2744 #define sgl BPSTAT_WHAT_SINGLE
2745 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2746 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2747 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2748 #define sr BPSTAT_WHAT_STEP_RESUME
2749 #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
2750 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2751 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2753 /* "Can't happen." Might want to print an error message.
2754 abort() is not out of the question, but chances are GDB is just
2755 a bit confused, not unusable. */
2756 #define err BPSTAT_WHAT_STOP_NOISY
2758 /* Given an old action and a class, come up with a new action. */
2759 /* One interesting property of this table is that wp_silent is the same
2760 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2761 after stopping, the check for whether to step over a breakpoint
2762 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2763 reference to how we stopped. We retain separate wp_silent and
2764 bp_silent codes in case we want to change that someday.
2766 Another possibly interesting property of this table is that
2767 there's a partial ordering, priority-like, of the actions. Once
2768 you've decided that some action is appropriate, you'll never go
2769 back and decide something of a lower priority is better. The
2772 kc < clr sgl shl shlr slr sn sr ss ts
2773 sgl < clrs shl shlr slr sn sr ss ts
2774 slr < err shl shlr sn sr ss ts
2775 clr < clrs err shl shlr sn sr ss ts
2776 clrs < err shl shlr sn sr ss ts
2777 ss < shl shlr sn sr ts
2784 What I think this means is that we don't need a damned table
2785 here. If you just put the rows and columns in the right order,
2786 it'd look awfully regular. We could simply walk the bpstat list
2787 and choose the highest priority action we find, with a little
2788 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
2789 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
2790 is messy anyway). */
2792 /* step_resume entries: a step resume breakpoint overrides another
2793 breakpoint of signal handling (see comment in wait_for_inferior
2794 at first IN_SIGTRAMP where we set the step_resume breakpoint). */
2795 /* We handle the through_sigtramp_breakpoint the same way; having both
2796 one of those and a step_resume_breakpoint is probably very rare (?). */
2798 static const enum bpstat_what_main_action
2799 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
2802 /* kc ss sn sgl slr clr clrs sr ts shl shlr
2805 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, ts
, shl
, shlr
},
2807 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2809 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2811 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, ts
, shl
, shlr
},
2813 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2815 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2817 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, ts
, shl
, shlr
},
2819 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, ts
, shl
, shlr
},
2821 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, ts
, shl
, shlr
},
2823 {ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, shl
, shlr
},
2825 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, shl
, ts
, shl
, shlr
},
2827 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, ts
, shlr
, shlr
}
2842 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
2843 struct bpstat_what retval
;
2845 retval
.call_dummy
= 0;
2846 for (; bs
!= NULL
; bs
= bs
->next
)
2848 enum class bs_class
= no_effect
;
2849 if (bs
->breakpoint_at
== NULL
)
2850 /* I suspect this can happen if it was a momentary breakpoint
2851 which has since been deleted. */
2853 switch (bs
->breakpoint_at
->type
)
2859 case bp_hardware_breakpoint
:
2865 bs_class
= bp_noisy
;
2867 bs_class
= bp_silent
;
2870 bs_class
= bp_nostop
;
2873 case bp_hardware_watchpoint
:
2874 case bp_read_watchpoint
:
2875 case bp_access_watchpoint
:
2879 bs_class
= wp_noisy
;
2881 bs_class
= wp_silent
;
2884 /* There was a watchpoint, but we're not stopping.
2885 This requires no further action. */
2886 bs_class
= no_effect
;
2889 bs_class
= long_jump
;
2891 case bp_longjmp_resume
:
2892 bs_class
= long_resume
;
2894 case bp_step_resume
:
2897 bs_class
= step_resume
;
2900 /* It is for the wrong frame. */
2901 bs_class
= bp_nostop
;
2903 case bp_through_sigtramp
:
2904 bs_class
= through_sig
;
2906 case bp_watchpoint_scope
:
2907 bs_class
= bp_nostop
;
2909 case bp_shlib_event
:
2910 bs_class
= shlib_event
;
2912 case bp_thread_event
:
2913 bs_class
= bp_nostop
;
2916 case bp_catch_unload
:
2917 /* Only if this catchpoint triggered should we cause the
2918 step-out-of-dld behaviour. Otherwise, we ignore this
2921 bs_class
= catch_shlib_event
;
2923 bs_class
= no_effect
;
2926 case bp_catch_vfork
:
2931 bs_class
= bp_noisy
;
2933 bs_class
= bp_silent
;
2936 /* There was a catchpoint, but we're not stopping.
2937 This requires no further action. */
2938 bs_class
= no_effect
;
2940 case bp_catch_catch
:
2941 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
2942 bs_class
= bp_nostop
;
2944 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2946 case bp_catch_throw
:
2947 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
2948 bs_class
= bp_nostop
;
2950 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2953 /* Make sure the action is stop (silent or noisy),
2954 so infrun.c pops the dummy frame. */
2955 bs_class
= bp_silent
;
2956 retval
.call_dummy
= 1;
2959 current_action
= table
[(int) bs_class
][(int) current_action
];
2961 retval
.main_action
= current_action
;
2965 /* Nonzero if we should step constantly (e.g. watchpoints on machines
2966 without hardware support). This isn't related to a specific bpstat,
2967 just to things like whether watchpoints are set. */
2970 bpstat_should_step (void)
2972 struct breakpoint
*b
;
2974 if (b
->enable
== enabled
&& b
->type
== bp_watchpoint
)
2979 /* Nonzero if there are enabled hardware watchpoints. */
2981 bpstat_have_active_hw_watchpoints (void)
2983 struct breakpoint
*b
;
2985 if ((b
->enable
== enabled
) &&
2987 ((b
->type
== bp_hardware_watchpoint
) ||
2988 (b
->type
== bp_read_watchpoint
) ||
2989 (b
->type
== bp_access_watchpoint
)))
2995 /* Given a bpstat that records zero or more triggered eventpoints, this
2996 function returns another bpstat which contains only the catchpoints
2997 on that first list, if any. */
2999 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3001 struct bpstats root_bs
[1];
3002 bpstat bs
= root_bs
;
3003 struct breakpoint
*ep
;
3006 bpstat_clear (cp_list
);
3007 root_bs
->next
= NULL
;
3009 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3011 /* Is this eventpoint a catchpoint? If not, ignore it. */
3012 ep
= ep_list
->breakpoint_at
;
3015 if ((ep
->type
!= bp_catch_load
) &&
3016 (ep
->type
!= bp_catch_unload
) &&
3017 (ep
->type
!= bp_catch_catch
) &&
3018 (ep
->type
!= bp_catch_throw
))
3019 /* pai: (temp) ADD fork/vfork here!! */
3022 /* Yes; add it to the list. */
3023 bs
= bpstat_alloc (ep
, bs
);
3028 #if defined(SOLIB_ADD)
3029 /* Also, for each triggered catchpoint, tag it with the name of
3030 the library that caused this trigger. (We copy the name now,
3031 because it's only guaranteed to be available NOW, when the
3032 catchpoint triggers. Clients who may wish to know the name
3033 later must get it from the catchpoint itself.) */
3034 if (ep
->triggered_dll_pathname
!= NULL
)
3035 xfree (ep
->triggered_dll_pathname
);
3036 if (ep
->type
== bp_catch_load
)
3037 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid
);
3039 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid
);
3041 dll_pathname
= NULL
;
3045 ep
->triggered_dll_pathname
= (char *)
3046 xmalloc (strlen (dll_pathname
) + 1);
3047 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3050 ep
->triggered_dll_pathname
= NULL
;
3056 /* Print B to gdb_stdout. */
3058 print_one_breakpoint (struct breakpoint
*b
,
3059 CORE_ADDR
*last_addr
)
3061 register struct command_line
*l
;
3062 register struct symbol
*sym
;
3063 struct ep_type_description
3068 static struct ep_type_description bptypes
[] =
3070 {bp_none
, "?deleted?"},
3071 {bp_breakpoint
, "breakpoint"},
3072 {bp_hardware_breakpoint
, "hw breakpoint"},
3073 {bp_until
, "until"},
3074 {bp_finish
, "finish"},
3075 {bp_watchpoint
, "watchpoint"},
3076 {bp_hardware_watchpoint
, "hw watchpoint"},
3077 {bp_read_watchpoint
, "read watchpoint"},
3078 {bp_access_watchpoint
, "acc watchpoint"},
3079 {bp_longjmp
, "longjmp"},
3080 {bp_longjmp_resume
, "longjmp resume"},
3081 {bp_step_resume
, "step resume"},
3082 {bp_through_sigtramp
, "sigtramp"},
3083 {bp_watchpoint_scope
, "watchpoint scope"},
3084 {bp_call_dummy
, "call dummy"},
3085 {bp_shlib_event
, "shlib events"},
3086 {bp_thread_event
, "thread events"},
3087 {bp_catch_load
, "catch load"},
3088 {bp_catch_unload
, "catch unload"},
3089 {bp_catch_fork
, "catch fork"},
3090 {bp_catch_vfork
, "catch vfork"},
3091 {bp_catch_exec
, "catch exec"},
3092 {bp_catch_catch
, "catch catch"},
3093 {bp_catch_throw
, "catch throw"}
3096 static char *bpdisps
[] =
3097 {"del", "dstp", "dis", "keep"};
3098 static char bpenables
[] = "nynny";
3099 char wrap_indent
[80];
3101 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3102 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3107 ui_out_list_begin (uiout
, "bkpt");
3113 ui_out_field_int (uiout
, "number", b
->number
);
3115 printf_filtered ("%-3d ", b
->number
);
3120 if (((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3121 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3122 internal_error (__FILE__
, __LINE__
,
3123 "bptypes table does not describe type #%d.",
3126 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3128 printf_filtered ("%-14s ", bptypes
[(int) b
->type
].description
);
3134 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3136 printf_filtered ("%-4s ", bpdisps
[(int) b
->disposition
]);
3142 ui_out_field_fmt (uiout
, "enabled", "%c", bpenables
[(int) b
->enable
]);
3143 ui_out_spaces (uiout
, 2);
3145 printf_filtered ("%-3c ", bpenables
[(int) b
->enable
]);
3149 strcpy (wrap_indent
, " ");
3152 if (TARGET_ADDR_BIT
<= 32)
3153 strcat (wrap_indent
, " ");
3155 strcat (wrap_indent
, " ");
3160 internal_error (__FILE__
, __LINE__
,
3161 "print_one_breakpoint: bp_none encountered\n");
3165 case bp_hardware_watchpoint
:
3166 case bp_read_watchpoint
:
3167 case bp_access_watchpoint
:
3168 /* Field 4, the address, is omitted (which makes the columns
3169 not line up too nicely with the headers, but the effect
3170 is relatively readable). */
3173 ui_out_field_skip (uiout
, "addr");
3175 print_expression (b
->exp
, stb
->stream
);
3176 ui_out_field_stream (uiout
, "what", stb
);
3179 print_expression (b
->exp
, gdb_stdout
);
3184 case bp_catch_unload
:
3185 /* Field 4, the address, is omitted (which makes the columns
3186 not line up too nicely with the headers, but the effect
3187 is relatively readable). */
3190 ui_out_field_skip (uiout
, "addr");
3192 if (b
->dll_pathname
== NULL
)
3194 ui_out_field_string (uiout
, "what", "<any library>");
3195 ui_out_spaces (uiout
, 1);
3199 ui_out_text (uiout
, "library \"");
3200 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3201 ui_out_text (uiout
, "\" ");
3205 if (b
->dll_pathname
== NULL
)
3206 printf_filtered ("<any library> ");
3208 printf_filtered ("library \"%s\" ", b
->dll_pathname
);
3213 case bp_catch_vfork
:
3214 /* Field 4, the address, is omitted (which makes the columns
3215 not line up too nicely with the headers, but the effect
3216 is relatively readable). */
3219 ui_out_field_skip (uiout
, "addr");
3221 if (b
->forked_inferior_pid
!= 0)
3223 ui_out_text (uiout
, "process ");
3224 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3225 ui_out_spaces (uiout
, 1);
3229 if (b
->forked_inferior_pid
!= 0)
3230 printf_filtered ("process %d ", b
->forked_inferior_pid
);
3235 /* Field 4, the address, is omitted (which makes the columns
3236 not line up too nicely with the headers, but the effect
3237 is relatively readable). */
3240 ui_out_field_skip (uiout
, "addr");
3242 if (b
->exec_pathname
!= NULL
)
3244 ui_out_text (uiout
, "program \"");
3245 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3246 ui_out_text (uiout
, "\" ");
3250 if (b
->exec_pathname
!= NULL
)
3251 printf_filtered ("program \"%s\" ", b
->exec_pathname
);
3255 case bp_catch_catch
:
3256 /* Field 4, the address, is omitted (which makes the columns
3257 not line up too nicely with the headers, but the effect
3258 is relatively readable). */
3261 ui_out_field_skip (uiout
, "addr");
3263 ui_out_field_string (uiout
, "what", "exception catch");
3264 ui_out_spaces (uiout
, 1);
3267 printf_filtered ("exception catch ");
3271 case bp_catch_throw
:
3272 /* Field 4, the address, is omitted (which makes the columns
3273 not line up too nicely with the headers, but the effect
3274 is relatively readable). */
3277 ui_out_field_skip (uiout
, "addr");
3279 ui_out_field_string (uiout
, "what", "exception throw");
3280 ui_out_spaces (uiout
, 1);
3283 printf_filtered ("exception throw ");
3288 case bp_hardware_breakpoint
:
3292 case bp_longjmp_resume
:
3293 case bp_step_resume
:
3294 case bp_through_sigtramp
:
3295 case bp_watchpoint_scope
:
3297 case bp_shlib_event
:
3298 case bp_thread_event
:
3303 ui_out_field_core_addr (uiout
, "addr", b
->address
);
3306 *last_addr
= b
->address
;
3309 sym
= find_pc_sect_function (b
->address
, b
->section
);
3312 ui_out_text (uiout
, "in ");
3313 ui_out_field_string (uiout
, "func",
3314 SYMBOL_SOURCE_NAME (sym
));
3315 ui_out_wrap_hint (uiout
, wrap_indent
);
3316 ui_out_text (uiout
, " at ");
3318 ui_out_field_string (uiout
, "file", b
->source_file
);
3319 ui_out_text (uiout
, ":");
3320 ui_out_field_int (uiout
, "line", b
->line_number
);
3324 print_address_symbolic (b
->address
, stb
->stream
, demangle
, "");
3325 ui_out_field_stream (uiout
, "at", stb
);
3334 if (TARGET_ADDR_BIT
<= 32)
3335 tmp
= longest_local_hex_string_custom (b
->address
3336 & (CORE_ADDR
) 0xffffffff,
3339 tmp
= longest_local_hex_string_custom (b
->address
, "016l");
3341 printf_filtered ("%s ", tmp
);
3344 *last_addr
= b
->address
;
3347 sym
= find_pc_sect_function (b
->address
, b
->section
);
3350 fputs_filtered ("in ", gdb_stdout
);
3351 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), gdb_stdout
);
3352 wrap_here (wrap_indent
);
3353 fputs_filtered (" at ", gdb_stdout
);
3355 fputs_filtered (b
->source_file
, gdb_stdout
);
3356 printf_filtered (":%d", b
->line_number
);
3359 print_address_symbolic (b
->address
, gdb_stdout
, demangle
, " ");
3364 if (b
->thread
!= -1)
3367 /* FIXME: This seems to be redundant and lost here; see the
3368 "stop only in" line a little further down. */
3369 ui_out_text (uiout
, " thread ");
3370 ui_out_field_int (uiout
, "thread", b
->thread
);
3372 printf_filtered (" thread %d", b
->thread
);
3377 ui_out_text (uiout
, "\n");
3379 printf_filtered ("\n");
3386 ui_out_text (uiout
, "\tstop only in stack frame at ");
3387 ui_out_field_core_addr (uiout
, "frame", b
->frame
);
3388 ui_out_text (uiout
, "\n");
3390 printf_filtered ("\tstop only in stack frame at ");
3391 print_address_numeric (b
->frame
, 1, gdb_stdout
);
3392 printf_filtered ("\n");
3400 ui_out_text (uiout
, "\tstop only if ");
3401 print_expression (b
->cond
, stb
->stream
);
3402 ui_out_field_stream (uiout
, "cond", stb
);
3403 ui_out_text (uiout
, "\n");
3405 printf_filtered ("\tstop only if ");
3406 print_expression (b
->cond
, gdb_stdout
);
3407 printf_filtered ("\n");
3411 if (b
->thread
!= -1)
3413 /* FIXME should make an annotation for this */
3415 ui_out_text (uiout
, "\tstop only in thread ");
3416 ui_out_field_int (uiout
, "thread", b
->thread
);
3417 ui_out_text (uiout
, "\n");
3419 printf_filtered ("\tstop only in thread %d\n", b
->thread
);
3423 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3425 /* FIXME should make an annotation for this */
3427 if (ep_is_catchpoint (b
))
3428 ui_out_text (uiout
, "\tcatchpoint");
3430 ui_out_text (uiout
, "\tbreakpoint");
3431 ui_out_text (uiout
, " already hit ");
3432 ui_out_field_int (uiout
, "times", b
->hit_count
);
3433 if (b
->hit_count
== 1)
3434 ui_out_text (uiout
, " time\n");
3436 ui_out_text (uiout
, " times\n");
3438 if (ep_is_catchpoint (b
))
3439 printf_filtered ("\tcatchpoint");
3441 printf_filtered ("\tbreakpoint");
3442 printf_filtered (" already hit %d time%s\n",
3443 b
->hit_count
, (b
->hit_count
== 1 ? "" : "s"));
3448 /* Output the count also if it is zero, but only if this is
3449 mi. FIXME: Should have a better test for this. */
3450 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
3451 if (show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3452 ui_out_field_int (uiout
, "times", b
->hit_count
);
3455 if (b
->ignore_count
)
3459 ui_out_text (uiout
, "\tignore next ");
3460 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3461 ui_out_text (uiout
, " hits\n");
3463 printf_filtered ("\tignore next %d hits\n", b
->ignore_count
);
3467 if ((l
= b
->commands
))
3471 ui_out_list_begin (uiout
, "script");
3472 print_command_lines (uiout
, l
, 4);
3473 ui_out_list_end (uiout
);
3477 print_command_line (l
, 4, gdb_stdout
);
3483 ui_out_list_end (uiout
);
3484 do_cleanups (old_chain
);
3488 struct captured_breakpoint_query_args
3494 do_captured_breakpoint_query (void *data
)
3496 struct captured_breakpoint_query_args
*args
= data
;
3497 register struct breakpoint
*b
;
3498 CORE_ADDR dummy_addr
= 0;
3501 if (args
->bnum
== b
->number
)
3503 print_one_breakpoint (b
, &dummy_addr
);
3511 gdb_breakpoint_query (/* output object, */ int bnum
)
3513 struct captured_breakpoint_query_args args
;
3515 /* For the moment we don't trust print_one_breakpoint() to not throw
3517 return catch_errors (do_captured_breakpoint_query
, &args
,
3518 NULL
, RETURN_MASK_ALL
);
3521 /* Print information on breakpoint number BNUM, or -1 if all.
3522 If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS
3523 is nonzero, process only watchpoints. */
3526 breakpoint_1 (int bnum
, int allflag
)
3528 register struct breakpoint
*b
;
3529 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3530 int found_a_breakpoint
= 0;
3534 ui_out_table_begin (uiout
, 6, "BreakpointTable");
3536 ui_out_table_begin (uiout
, 5, "BreakpointTable");
3541 || bnum
== b
->number
)
3543 /* We only print out user settable breakpoints unless the
3546 && b
->type
!= bp_breakpoint
3547 && b
->type
!= bp_catch_load
3548 && b
->type
!= bp_catch_unload
3549 && b
->type
!= bp_catch_fork
3550 && b
->type
!= bp_catch_vfork
3551 && b
->type
!= bp_catch_exec
3552 && b
->type
!= bp_catch_catch
3553 && b
->type
!= bp_catch_throw
3554 && b
->type
!= bp_hardware_breakpoint
3555 && b
->type
!= bp_watchpoint
3556 && b
->type
!= bp_read_watchpoint
3557 && b
->type
!= bp_access_watchpoint
3558 && b
->type
!= bp_hardware_watchpoint
)
3561 if (!found_a_breakpoint
++)
3563 annotate_breakpoints_headers ();
3566 ui_out_table_header (uiout
, 3, ui_left
, "Num"); /* 1 */
3568 ui_out_table_header (uiout
, 14, ui_left
, "Type"); /* 2 */
3570 ui_out_table_header (uiout
, 4, ui_left
, "Disp"); /* 3 */
3572 ui_out_table_header (uiout
, 3, ui_left
, "Enb"); /* 4 */
3576 if (TARGET_ADDR_BIT
<= 32)
3577 ui_out_table_header (uiout
, 10, ui_left
, "Address"); /* 5 */
3579 ui_out_table_header (uiout
, 18, ui_left
, "Address"); /* 5 */
3582 ui_out_table_header (uiout
, 40, ui_noalign
, "What"); /* 6 */
3583 ui_out_table_body (uiout
);
3586 printf_filtered ("Num ");
3588 printf_filtered ("Type ");
3590 printf_filtered ("Disp ");
3592 printf_filtered ("Enb ");
3596 if (TARGET_ADDR_BIT
<= 32)
3597 printf_filtered ("Address ");
3599 printf_filtered ("Address ");
3602 printf_filtered ("What\n");
3604 annotate_breakpoints_table ();
3607 print_one_breakpoint (b
, &last_addr
);
3610 if (!found_a_breakpoint
)
3614 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3616 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3620 printf_filtered ("No breakpoints or watchpoints.\n");
3622 printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum
);
3627 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3628 that a comparison of an unsigned with -1 is always false. */
3629 if (last_addr
!= (CORE_ADDR
) -1)
3630 set_next_address (last_addr
);
3634 ui_out_table_end (uiout
);
3636 /* FIXME? Should this be moved up so that it is only called when
3637 there have been breakpoints? */
3638 annotate_breakpoints_table_end ();
3643 breakpoints_info (char *bnum_exp
, int from_tty
)
3648 bnum
= parse_and_eval_long (bnum_exp
);
3650 breakpoint_1 (bnum
, 0);
3655 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3660 bnum
= parse_and_eval_long (bnum_exp
);
3662 breakpoint_1 (bnum
, 1);
3665 /* Print a message describing any breakpoints set at PC. */
3668 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
)
3670 register int others
= 0;
3671 register struct breakpoint
*b
;
3674 if (b
->address
== pc
)
3675 if (overlay_debugging
== 0 ||
3676 b
->section
== section
)
3680 printf_filtered ("Note: breakpoint%s ", (others
> 1) ? "s" : "");
3682 if (b
->address
== pc
)
3683 if (overlay_debugging
== 0 ||
3684 b
->section
== section
)
3687 printf_filtered ("%d%s%s ",
3689 ((b
->enable
== disabled
||
3690 b
->enable
== shlib_disabled
||
3691 b
->enable
== call_disabled
) ? " (disabled)"
3692 : b
->enable
== permanent
? " (permanent)"
3695 : ((others
== 1) ? " and" : ""));
3697 printf_filtered ("also set at pc ");
3698 print_address_numeric (pc
, 1, gdb_stdout
);
3699 printf_filtered (".\n");
3703 /* Set the default place to put a breakpoint
3704 for the `break' command with no arguments. */
3707 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3710 default_breakpoint_valid
= valid
;
3711 default_breakpoint_address
= addr
;
3712 default_breakpoint_symtab
= symtab
;
3713 default_breakpoint_line
= line
;
3716 /* Rescan breakpoints at address ADDRESS,
3717 marking the first one as "first" and any others as "duplicates".
3718 This is so that the bpt instruction is only inserted once.
3719 If we have a permanent breakpoint at ADDRESS, make that one
3720 the official one, and the rest as duplicates. */
3723 check_duplicates (CORE_ADDR address
, asection
*section
)
3725 register struct breakpoint
*b
;
3726 register int count
= 0;
3727 struct breakpoint
*perm_bp
= 0;
3729 if (address
== 0) /* Watchpoints are uninteresting */
3733 if (b
->enable
!= disabled
3734 && b
->enable
!= shlib_disabled
3735 && b
->enable
!= call_disabled
3736 && b
->address
== address
3737 && (overlay_debugging
== 0 || b
->section
== section
))
3739 /* Have we found a permanent breakpoint? */
3740 if (b
->enable
== permanent
)
3747 b
->duplicate
= count
> 1;
3750 /* If we found a permanent breakpoint at this address, go over the
3751 list again and declare all the other breakpoints there to be the
3755 perm_bp
->duplicate
= 0;
3757 /* Permanent breakpoint should always be inserted. */
3758 if (! perm_bp
->inserted
)
3759 internal_error (__FILE__
, __LINE__
,
3760 "allegedly permanent breakpoint is not "
3761 "actually inserted");
3767 internal_error (__FILE__
, __LINE__
,
3768 "another breakpoint was inserted on top of "
3769 "a permanent breakpoint");
3771 if (b
->enable
!= disabled
3772 && b
->enable
!= shlib_disabled
3773 && b
->enable
!= call_disabled
3774 && b
->address
== address
3775 && (overlay_debugging
== 0 || b
->section
== section
))
3781 /* Low level routine to set a breakpoint.
3782 Takes as args the three things that every breakpoint must have.
3783 Returns the breakpoint object so caller can set other things.
3784 Does not set the breakpoint number!
3785 Does not print anything.
3787 ==> This routine should not be called if there is a chance of later
3788 error(); otherwise it leaves a bogus breakpoint on the chain. Validate
3789 your arguments BEFORE calling this routine! */
3792 set_raw_breakpoint (struct symtab_and_line sal
)
3794 register struct breakpoint
*b
, *b1
;
3796 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
3797 memset (b
, 0, sizeof (*b
));
3798 b
->address
= sal
.pc
;
3799 if (sal
.symtab
== NULL
)
3800 b
->source_file
= NULL
;
3802 b
->source_file
= savestring (sal
.symtab
->filename
,
3803 strlen (sal
.symtab
->filename
));
3804 b
->section
= sal
.section
;
3805 b
->language
= current_language
->la_language
;
3806 b
->input_radix
= input_radix
;
3808 b
->line_number
= sal
.line
;
3809 b
->enable
= enabled
;
3812 b
->ignore_count
= 0;
3815 b
->dll_pathname
= NULL
;
3816 b
->triggered_dll_pathname
= NULL
;
3817 b
->forked_inferior_pid
= 0;
3818 b
->exec_pathname
= NULL
;
3820 /* Add this breakpoint to the end of the chain
3821 so that a list of breakpoints will come out in order
3822 of increasing numbers. */
3824 b1
= breakpoint_chain
;
3826 breakpoint_chain
= b
;
3834 check_duplicates (sal
.pc
, sal
.section
);
3835 breakpoints_changed ();
3841 /* Note that the breakpoint object B describes a permanent breakpoint
3842 instruction, hard-wired into the inferior's code. */
3844 make_breakpoint_permanent (struct breakpoint
*b
)
3846 b
->enable
= permanent
;
3848 /* By definition, permanent breakpoints are already present in the code. */
3852 #ifdef GET_LONGJMP_TARGET
3855 create_longjmp_breakpoint (char *func_name
)
3857 struct symtab_and_line sal
;
3858 struct breakpoint
*b
;
3860 INIT_SAL (&sal
); /* initialize to zeroes */
3861 if (func_name
!= NULL
)
3863 struct minimal_symbol
*m
;
3865 m
= lookup_minimal_symbol_text (func_name
, NULL
,
3866 (struct objfile
*) NULL
);
3868 sal
.pc
= SYMBOL_VALUE_ADDRESS (m
);
3872 sal
.section
= find_pc_overlay (sal
.pc
);
3873 b
= set_raw_breakpoint (sal
);
3877 b
->type
= func_name
!= NULL
? bp_longjmp
: bp_longjmp_resume
;
3878 b
->disposition
= donttouch
;
3879 b
->enable
= disabled
;
3882 b
->addr_string
= xstrdup (func_name
);
3883 b
->number
= internal_breakpoint_number
--;
3886 #endif /* #ifdef GET_LONGJMP_TARGET */
3888 /* Call this routine when stepping and nexting to enable a breakpoint
3889 if we do a longjmp(). When we hit that breakpoint, call
3890 set_longjmp_resume_breakpoint() to figure out where we are going. */
3893 enable_longjmp_breakpoint (void)
3895 register struct breakpoint
*b
;
3898 if (b
->type
== bp_longjmp
)
3900 b
->enable
= enabled
;
3901 check_duplicates (b
->address
, b
->section
);
3906 disable_longjmp_breakpoint (void)
3908 register struct breakpoint
*b
;
3911 if (b
->type
== bp_longjmp
3912 || b
->type
== bp_longjmp_resume
)
3914 b
->enable
= disabled
;
3915 check_duplicates (b
->address
, b
->section
);
3920 create_thread_event_breakpoint (CORE_ADDR address
)
3922 struct breakpoint
*b
;
3923 struct symtab_and_line sal
;
3924 char addr_string
[80]; /* Surely an addr can't be longer than that. */
3926 INIT_SAL (&sal
); /* initialize to zeroes */
3928 sal
.section
= find_pc_overlay (sal
.pc
);
3929 if ((b
= set_raw_breakpoint (sal
)) == NULL
)
3932 b
->number
= internal_breakpoint_number
--;
3933 b
->disposition
= donttouch
;
3934 b
->type
= bp_thread_event
; /* XXX: do we need a new type?
3936 b
->enable
= enabled
;
3937 /* addr_string has to be used or breakpoint_re_set will delete me. */
3938 sprintf (addr_string
, "*0x%s", paddr (b
->address
));
3939 b
->addr_string
= xstrdup (addr_string
);
3945 remove_thread_event_breakpoints (void)
3947 struct breakpoint
*b
, *temp
;
3949 ALL_BREAKPOINTS_SAFE (b
, temp
)
3950 if (b
->type
== bp_thread_event
)
3951 delete_breakpoint (b
);
3956 remove_solib_event_breakpoints (void)
3958 register struct breakpoint
*b
, *temp
;
3960 ALL_BREAKPOINTS_SAFE (b
, temp
)
3961 if (b
->type
== bp_shlib_event
)
3962 delete_breakpoint (b
);
3966 create_solib_event_breakpoint (CORE_ADDR address
)
3968 struct breakpoint
*b
;
3969 struct symtab_and_line sal
;
3971 INIT_SAL (&sal
); /* initialize to zeroes */
3973 sal
.section
= find_pc_overlay (sal
.pc
);
3974 b
= set_raw_breakpoint (sal
);
3975 b
->number
= internal_breakpoint_number
--;
3976 b
->disposition
= donttouch
;
3977 b
->type
= bp_shlib_event
;
3982 /* Disable any breakpoints that are on code in shared libraries. Only
3983 apply to enabled breakpoints, disabled ones can just stay disabled. */
3986 disable_breakpoints_in_shlibs (int silent
)
3988 struct breakpoint
*b
;
3989 int disabled_shlib_breaks
= 0;
3991 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
3994 #if defined (PC_SOLIB)
3995 if (((b
->type
== bp_breakpoint
) ||
3996 (b
->type
== bp_hardware_breakpoint
)) &&
3997 b
->enable
== enabled
&&
3999 PC_SOLIB (b
->address
))
4001 b
->enable
= shlib_disabled
;
4004 if (!disabled_shlib_breaks
)
4006 target_terminal_ours_for_output ();
4007 warning ("Temporarily disabling shared library breakpoints:");
4009 disabled_shlib_breaks
= 1;
4010 warning ("breakpoint #%d ", b
->number
);
4017 /* Try to reenable any breakpoints in shared libraries. */
4019 re_enable_breakpoints_in_shlibs (void)
4021 struct breakpoint
*b
;
4024 if (b
->enable
== shlib_disabled
)
4028 /* Do not reenable the breakpoint if the shared library
4029 is still not mapped in. */
4030 if (target_read_memory (b
->address
, buf
, 1) == 0)
4031 b
->enable
= enabled
;
4038 solib_load_unload_1 (char *hookname
, int tempflag
, char *dll_pathname
,
4039 char *cond_string
, enum bptype bp_kind
)
4041 struct breakpoint
*b
;
4042 struct symtabs_and_lines sals
;
4043 struct cleanup
*old_chain
;
4044 struct cleanup
*canonical_strings_chain
= NULL
;
4045 char *addr_start
= hookname
;
4046 char *addr_end
= NULL
;
4047 char **canonical
= (char **) NULL
;
4048 int thread
= -1; /* All threads. */
4050 /* Set a breakpoint on the specified hook. */
4051 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
, 0, &canonical
);
4052 addr_end
= hookname
;
4054 if (sals
.nelts
== 0)
4056 warning ("Unable to set a breakpoint on dynamic linker callback.");
4057 warning ("Suggest linking with /opt/langtools/lib/end.o.");
4058 warning ("GDB will be unable to track shl_load/shl_unload calls");
4061 if (sals
.nelts
!= 1)
4063 warning ("Unable to set unique breakpoint on dynamic linker callback.");
4064 warning ("GDB will be unable to track shl_load/shl_unload calls");
4068 /* Make sure that all storage allocated in decode_line_1 gets freed
4069 in case the following errors out. */
4070 old_chain
= make_cleanup (xfree
, sals
.sals
);
4071 if (canonical
!= (char **) NULL
)
4073 make_cleanup (xfree
, canonical
);
4074 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4075 if (canonical
[0] != NULL
)
4076 make_cleanup (xfree
, canonical
[0]);
4079 resolve_sal_pc (&sals
.sals
[0]);
4081 /* Remove the canonical strings from the cleanup, they are needed below. */
4082 if (canonical
!= (char **) NULL
)
4083 discard_cleanups (canonical_strings_chain
);
4085 b
= set_raw_breakpoint (sals
.sals
[0]);
4086 set_breakpoint_count (breakpoint_count
+ 1);
4087 b
->number
= breakpoint_count
;
4089 b
->cond_string
= (cond_string
== NULL
) ?
4090 NULL
: savestring (cond_string
, strlen (cond_string
));
4093 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
4094 b
->addr_string
= canonical
[0];
4095 else if (addr_start
)
4096 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4098 b
->enable
= enabled
;
4099 b
->disposition
= tempflag
? del
: donttouch
;
4101 if (dll_pathname
== NULL
)
4102 b
->dll_pathname
= NULL
;
4105 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
4106 strcpy (b
->dll_pathname
, dll_pathname
);
4111 do_cleanups (old_chain
);
4115 create_solib_load_event_breakpoint (char *hookname
, int tempflag
,
4116 char *dll_pathname
, char *cond_string
)
4118 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4119 cond_string
, bp_catch_load
);
4123 create_solib_unload_event_breakpoint (char *hookname
, int tempflag
,
4124 char *dll_pathname
, char *cond_string
)
4126 solib_load_unload_1 (hookname
,tempflag
, dll_pathname
,
4127 cond_string
, bp_catch_unload
);
4131 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4132 enum bptype bp_kind
)
4134 struct symtab_and_line sal
;
4135 struct breakpoint
*b
;
4136 int thread
= -1; /* All threads. */
4143 b
= set_raw_breakpoint (sal
);
4144 set_breakpoint_count (breakpoint_count
+ 1);
4145 b
->number
= breakpoint_count
;
4147 b
->cond_string
= (cond_string
== NULL
) ?
4148 NULL
: savestring (cond_string
, strlen (cond_string
));
4150 b
->addr_string
= NULL
;
4151 b
->enable
= enabled
;
4152 b
->disposition
= tempflag
? del
: donttouch
;
4153 b
->forked_inferior_pid
= 0;
4161 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4163 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4167 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4169 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4173 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4175 struct symtab_and_line sal
;
4176 struct breakpoint
*b
;
4177 int thread
= -1; /* All threads. */
4184 b
= set_raw_breakpoint (sal
);
4185 set_breakpoint_count (breakpoint_count
+ 1);
4186 b
->number
= breakpoint_count
;
4188 b
->cond_string
= (cond_string
== NULL
) ?
4189 NULL
: savestring (cond_string
, strlen (cond_string
));
4191 b
->addr_string
= NULL
;
4192 b
->enable
= enabled
;
4193 b
->disposition
= tempflag
? del
: donttouch
;
4195 b
->type
= bp_catch_exec
;
4201 hw_breakpoint_used_count (void)
4203 register struct breakpoint
*b
;
4208 if (b
->type
== bp_hardware_breakpoint
&& b
->enable
== enabled
)
4216 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4218 register struct breakpoint
*b
;
4221 *other_type_used
= 0;
4224 if (b
->enable
== enabled
)
4226 if (b
->type
== type
)
4228 else if ((b
->type
== bp_hardware_watchpoint
||
4229 b
->type
== bp_read_watchpoint
||
4230 b
->type
== bp_access_watchpoint
)
4231 && b
->enable
== enabled
)
4232 *other_type_used
= 1;
4238 /* Call this after hitting the longjmp() breakpoint. Use this to set
4239 a new breakpoint at the target of the jmp_buf.
4241 FIXME - This ought to be done by setting a temporary breakpoint
4242 that gets deleted automatically... */
4245 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_info
*frame
)
4247 register struct breakpoint
*b
;
4250 if (b
->type
== bp_longjmp_resume
)
4253 b
->enable
= enabled
;
4255 b
->frame
= frame
->frame
;
4258 check_duplicates (b
->address
, b
->section
);
4264 disable_watchpoints_before_interactive_call_start (void)
4266 struct breakpoint
*b
;
4270 if (((b
->type
== bp_watchpoint
)
4271 || (b
->type
== bp_hardware_watchpoint
)
4272 || (b
->type
== bp_read_watchpoint
)
4273 || (b
->type
== bp_access_watchpoint
)
4274 || ep_is_exception_catchpoint (b
))
4275 && (b
->enable
== enabled
))
4277 b
->enable
= call_disabled
;
4278 check_duplicates (b
->address
, b
->section
);
4284 enable_watchpoints_after_interactive_call_stop (void)
4286 struct breakpoint
*b
;
4290 if (((b
->type
== bp_watchpoint
)
4291 || (b
->type
== bp_hardware_watchpoint
)
4292 || (b
->type
== bp_read_watchpoint
)
4293 || (b
->type
== bp_access_watchpoint
)
4294 || ep_is_exception_catchpoint (b
))
4295 && (b
->enable
== call_disabled
))
4297 b
->enable
= enabled
;
4298 check_duplicates (b
->address
, b
->section
);
4304 /* Set a breakpoint that will evaporate an end of command
4305 at address specified by SAL.
4306 Restrict it to frame FRAME if FRAME is nonzero. */
4309 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_info
*frame
,
4312 register struct breakpoint
*b
;
4313 b
= set_raw_breakpoint (sal
);
4315 b
->enable
= enabled
;
4316 b
->disposition
= donttouch
;
4317 b
->frame
= (frame
? frame
->frame
: 0);
4319 /* If we're debugging a multi-threaded program, then we
4320 want momentary breakpoints to be active in only a
4321 single thread of control. */
4322 if (in_thread_list (inferior_pid
))
4323 b
->thread
= pid_to_thread_id (inferior_pid
);
4329 /* Tell the user we have just set a breakpoint B. */
4332 mention (struct breakpoint
*b
)
4336 struct cleanup
*old_chain
;
4337 struct ui_stream
*stb
;
4339 stb
= ui_out_stream_new (uiout
);
4340 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4343 /* FIXME: This is misplaced; mention() is called by things (like hitting a
4344 watchpoint) other than breakpoint creation. It should be possible to
4345 clean this up and at the same time replace the random calls to
4346 breakpoint_changed with this hook, as has already been done for
4347 delete_breakpoint_hook and so on. */
4348 if (create_breakpoint_hook
)
4349 create_breakpoint_hook (b
);
4350 breakpoint_create_event (b
->number
);
4355 printf_filtered ("(apparently deleted?) Eventpoint %d: ", b
->number
);
4359 ui_out_text (uiout
, "Watchpoint ");
4360 ui_out_list_begin (uiout
, "wpt");
4361 ui_out_field_int (uiout
, "number", b
->number
);
4362 ui_out_text (uiout
, ": ");
4363 print_expression (b
->exp
, stb
->stream
);
4364 ui_out_field_stream (uiout
, "exp", stb
);
4365 ui_out_list_end (uiout
);
4367 case bp_hardware_watchpoint
:
4368 ui_out_text (uiout
, "Hardware watchpoint ");
4369 ui_out_list_begin (uiout
, "wpt");
4370 ui_out_field_int (uiout
, "number", b
->number
);
4371 ui_out_text (uiout
, ": ");
4372 print_expression (b
->exp
, stb
->stream
);
4373 ui_out_field_stream (uiout
, "exp", stb
);
4374 ui_out_list_end (uiout
);
4378 printf_filtered ("Watchpoint %d: ", b
->number
);
4379 print_expression (b
->exp
, gdb_stdout
);
4381 case bp_hardware_watchpoint
:
4382 printf_filtered ("Hardware watchpoint %d: ", b
->number
);
4383 print_expression (b
->exp
, gdb_stdout
);
4387 case bp_read_watchpoint
:
4388 ui_out_text (uiout
, "Hardware read watchpoint ");
4389 ui_out_list_begin (uiout
, "hw-rwpt");
4390 ui_out_field_int (uiout
, "number", b
->number
);
4391 ui_out_text (uiout
, ": ");
4392 print_expression (b
->exp
, stb
->stream
);
4393 ui_out_field_stream (uiout
, "exp", stb
);
4394 ui_out_list_end (uiout
);
4396 case bp_access_watchpoint
:
4397 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4398 ui_out_list_begin (uiout
, "hw-awpt");
4399 ui_out_field_int (uiout
, "number", b
->number
);
4400 ui_out_text (uiout
, ": ");
4401 print_expression (b
->exp
, stb
->stream
);
4402 ui_out_field_stream (uiout
, "exp", stb
);
4403 ui_out_list_end (uiout
);
4406 case bp_read_watchpoint
:
4407 printf_filtered ("Hardware read watchpoint %d: ", b
->number
);
4408 print_expression (b
->exp
, gdb_stdout
);
4410 case bp_access_watchpoint
:
4411 printf_filtered ("Hardware access (read/write) watchpoint %d: ",
4413 print_expression (b
->exp
, gdb_stdout
);
4418 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4424 printf_filtered ("Breakpoint %d", b
->number
);
4427 case bp_hardware_breakpoint
:
4429 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4435 printf_filtered ("Hardware assisted breakpoint %d", b
->number
);
4439 case bp_catch_unload
:
4440 printf_filtered ("Catchpoint %d (%s %s)",
4442 (b
->type
== bp_catch_load
) ? "load" : "unload",
4443 (b
->dll_pathname
!= NULL
) ?
4444 b
->dll_pathname
: "<any library>");
4447 case bp_catch_vfork
:
4448 printf_filtered ("Catchpoint %d (%s)",
4450 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4453 printf_filtered ("Catchpoint %d (exec)",
4456 case bp_catch_catch
:
4457 case bp_catch_throw
:
4458 printf_filtered ("Catchpoint %d (%s)",
4460 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
4466 case bp_longjmp_resume
:
4467 case bp_step_resume
:
4468 case bp_through_sigtramp
:
4470 case bp_watchpoint_scope
:
4471 case bp_shlib_event
:
4472 case bp_thread_event
:
4477 if (addressprint
|| b
->source_file
== NULL
)
4479 printf_filtered (" at ");
4480 print_address_numeric (b
->address
, 1, gdb_stdout
);
4483 printf_filtered (": file %s, line %d.",
4484 b
->source_file
, b
->line_number
);
4485 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, b
, 1));
4486 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
4489 do_cleanups (old_chain
);
4492 if (interpreter_p
&& strcmp (interpreter_p
, "mi") == 0)
4495 printf_filtered ("\n");
4499 /* Add SALS.nelts breakpoints to the breakpoint table. For each
4500 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
4501 COND[i] and COND_STRING[i] values.
4503 NOTE: If the function succeeds, the caller is expected to cleanup
4504 the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
4505 array contents). If the function fails (error() is called), the
4506 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
4507 COND and SALS arrays and each of those arrays contents. */
4510 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
4511 struct expression
**cond
, char **cond_string
,
4512 enum bptype type
, enum bpdisp disposition
,
4513 int thread
, int ignore_count
, int from_tty
)
4515 if (type
== bp_hardware_breakpoint
)
4517 int i
= hw_breakpoint_used_count ();
4518 int target_resources_ok
=
4519 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4521 if (target_resources_ok
== 0)
4522 error ("No hardware breakpoint support in the target.");
4523 else if (target_resources_ok
< 0)
4524 error ("Hardware breakpoints used exceeds limit.");
4527 /* Now set all the breakpoints. */
4530 for (i
= 0; i
< sals
.nelts
; i
++)
4532 struct breakpoint
*b
;
4533 struct symtab_and_line sal
= sals
.sals
[i
];
4536 describe_other_breakpoints (sal
.pc
, sal
.section
);
4538 b
= set_raw_breakpoint (sal
);
4539 set_breakpoint_count (breakpoint_count
+ 1);
4540 b
->number
= breakpoint_count
;
4544 b
->addr_string
= addr_string
[i
];
4545 b
->cond_string
= cond_string
[i
];
4546 b
->ignore_count
= ignore_count
;
4547 b
->enable
= enabled
;
4548 b
->disposition
= disposition
;
4554 /* Parse ARG which is assumed to be a SAL specification possibly
4555 followed by conditionals. On return, SALS contains an array of SAL
4556 addresses found. ADDR_STRING contains a vector of (canonical)
4557 address strings. ARG points to the end of the SAL. */
4560 parse_breakpoint_sals (char **address
,
4561 struct symtabs_and_lines
*sals
,
4562 char ***addr_string
)
4564 char *addr_start
= *address
;
4565 *addr_string
= NULL
;
4566 /* If no arg given, or if first arg is 'if ', use the default
4568 if ((*address
) == NULL
4569 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
4571 if (default_breakpoint_valid
)
4573 struct symtab_and_line sal
;
4574 INIT_SAL (&sal
); /* initialize to zeroes */
4575 sals
->sals
= (struct symtab_and_line
*)
4576 xmalloc (sizeof (struct symtab_and_line
));
4577 sal
.pc
= default_breakpoint_address
;
4578 sal
.line
= default_breakpoint_line
;
4579 sal
.symtab
= default_breakpoint_symtab
;
4580 sal
.section
= find_pc_overlay (sal
.pc
);
4581 sals
->sals
[0] = sal
;
4585 error ("No default breakpoint address now.");
4589 /* Force almost all breakpoints to be in terms of the
4590 current_source_symtab (which is decode_line_1's default). This
4591 should produce the results we want almost all of the time while
4592 leaving default_breakpoint_* alone. */
4593 if (default_breakpoint_valid
4594 && (!current_source_symtab
4595 || (strchr ("+-", (*address
)[0]) != NULL
)))
4596 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
4597 default_breakpoint_line
, addr_string
);
4599 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0, addr_string
);
4601 /* For any SAL that didn't have a canonical string, fill one in. */
4602 if (sals
->nelts
> 0 && *addr_string
== NULL
)
4603 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
4604 if (addr_start
!= (*address
))
4607 for (i
= 0; i
< sals
->nelts
; i
++)
4609 /* Add the string if not present. */
4610 if ((*addr_string
)[i
] == NULL
)
4611 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
4617 /* Convert each SAL into a real PC. Verify that the PC can be
4618 inserted as a breakpoint. If it can't throw an error. */
4621 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
4625 for (i
= 0; i
< sals
->nelts
; i
++)
4627 resolve_sal_pc (&sals
->sals
[i
]);
4629 /* It's possible for the PC to be nonzero, but still an illegal
4630 value on some targets.
4632 For example, on HP-UX if you start gdb, and before running the
4633 inferior you try to set a breakpoint on a shared library function
4634 "foo" where the inferior doesn't call "foo" directly but does
4635 pass its address to another function call, then we do find a
4636 minimal symbol for the "foo", but it's address is invalid.
4637 (Appears to be an index into a table that the loader sets up
4638 when the inferior is run.)
4640 Give the target a chance to bless sals.sals[i].pc before we
4641 try to make a breakpoint for it. */
4642 if (PC_REQUIRES_RUN_BEFORE_USE (sals
->sals
[i
].pc
))
4644 if (address
== NULL
)
4645 error ("Cannot break without a running program.");
4647 error ("Cannot break on %s without a running program.",
4653 /* Set a breakpoint according to ARG (function, linenum or *address)
4654 flag: first bit : 0 non-temporary, 1 temporary.
4655 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
4658 break_command_1 (char *arg
, int flag
, int from_tty
)
4660 int tempflag
, hardwareflag
;
4661 struct symtabs_and_lines sals
;
4662 register struct expression
**cond
= 0;
4663 /* Pointers in arg to the start, and one past the end, of the
4665 char **cond_string
= (char **) NULL
;
4666 char *addr_start
= arg
;
4668 struct cleanup
*old_chain
;
4669 struct cleanup
*breakpoint_chain
= NULL
;
4672 int ignore_count
= 0;
4674 hardwareflag
= flag
& BP_HARDWAREFLAG
;
4675 tempflag
= flag
& BP_TEMPFLAG
;
4680 parse_breakpoint_sals (&arg
, &sals
, &addr_string
);
4685 /* Create a chain of things that always need to be cleaned up. */
4686 old_chain
= make_cleanup (null_cleanup
, 0);
4688 /* Make sure that all storage allocated to SALS gets freed. */
4689 make_cleanup (xfree
, sals
.sals
);
4691 /* Cleanup the addr_string array but not its contents. */
4692 make_cleanup (xfree
, addr_string
);
4694 /* Allocate space for all the cond expressions. */
4695 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4696 make_cleanup (xfree
, cond
);
4698 /* Allocate space for all the cond strings. */
4699 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4700 make_cleanup (xfree
, cond_string
);
4702 /* ----------------------------- SNIP -----------------------------
4703 Anything added to the cleanup chain beyond this point is assumed
4704 to be part of a breakpoint. If the breakpoint create succeeds
4705 then the memory is not reclaimed. */
4706 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4708 /* Mark the contents of the addr_string for cleanup. These go on
4709 the breakpoint_chain and only occure if the breakpoint create
4711 for (i
= 0; i
< sals
.nelts
; i
++)
4713 if (addr_string
[i
] != NULL
)
4714 make_cleanup (xfree
, addr_string
[i
]);
4717 /* Resolve all line numbers to PC's and verify that the addresses
4718 are ok for the target. */
4719 breakpoint_sals_to_pc (&sals
, addr_start
);
4721 /* Verify that condition can be parsed, before setting any
4722 breakpoints. Allocate a separate condition expression for each
4724 thread
= -1; /* No specific thread yet */
4725 for (i
= 0; i
< sals
.nelts
; i
++)
4732 char *cond_start
= NULL
;
4733 char *cond_end
= NULL
;
4734 while (*tok
== ' ' || *tok
== '\t')
4739 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
4742 toklen
= end_tok
- tok
;
4744 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
4746 tok
= cond_start
= end_tok
+ 1;
4747 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4748 make_cleanup (xfree
, cond
[i
]);
4750 cond_string
[i
] = savestring (cond_start
, cond_end
- cond_start
);
4751 make_cleanup (xfree
, cond_string
[i
]);
4753 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
4759 thread
= strtol (tok
, &tok
, 0);
4761 error ("Junk after thread keyword.");
4762 if (!valid_thread_id (thread
))
4763 error ("Unknown thread %d\n", thread
);
4766 error ("Junk at end of arguments.");
4770 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4771 hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4772 tempflag
? del
: donttouch
,
4773 thread
, ignore_count
, from_tty
);
4777 warning ("Multiple breakpoints were set.");
4778 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
4780 /* That's it. Discard the cleanups for data inserted into the
4782 discard_cleanups (breakpoint_chain
);
4783 /* But cleanup everything else. */
4784 do_cleanups (old_chain
);
4787 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
4788 linenum or *address) with COND and IGNORE_COUNT. */
4790 struct captured_breakpoint_args
4801 do_captured_breakpoint (void *data
)
4803 struct captured_breakpoint_args
*args
= data
;
4804 struct symtabs_and_lines sals
;
4805 register struct expression
**cond
;
4806 struct cleanup
*old_chain
;
4807 struct cleanup
*breakpoint_chain
= NULL
;
4814 /* Parse the source and lines spec. Delay check that the expression
4815 didn't contain trailing garbage until after cleanups are in
4819 address_end
= args
->address
;
4821 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
);
4826 /* Create a chain of things at always need to be cleaned up. */
4827 old_chain
= make_cleanup (null_cleanup
, 0);
4829 /* Always have a addr_string array, even if it is empty. */
4830 make_cleanup (xfree
, addr_string
);
4832 /* Make sure that all storage allocated to SALS gets freed. */
4833 make_cleanup (xfree
, sals
.sals
);
4835 /* Allocate space for all the cond expressions. */
4836 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4837 make_cleanup (xfree
, cond
);
4839 /* Allocate space for all the cond strings. */
4840 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4841 make_cleanup (xfree
, cond_string
);
4843 /* ----------------------------- SNIP -----------------------------
4844 Anything added to the cleanup chain beyond this point is assumed
4845 to be part of a breakpoint. If the breakpoint create goes
4846 through then that memory is not cleaned up. */
4847 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4849 /* Mark the contents of the addr_string for cleanup. These go on
4850 the breakpoint_chain and only occure if the breakpoint create
4852 for (i
= 0; i
< sals
.nelts
; i
++)
4854 if (addr_string
[i
] != NULL
)
4855 make_cleanup (xfree
, addr_string
[i
]);
4858 /* Wait until now before checking for garbage at the end of the
4859 address. That way cleanups can take care of freeing any
4861 if (*address_end
!= '\0')
4862 error ("Garbage %s following breakpoint address", address_end
);
4864 /* Resolve all line numbers to PC's. */
4865 breakpoint_sals_to_pc (&sals
, args
->address
);
4867 /* Verify that conditions can be parsed, before setting any
4869 for (i
= 0; i
< sals
.nelts
; i
++)
4871 if (args
->condition
!= NULL
)
4873 char *tok
= args
->condition
;
4874 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4876 error ("Garbage %s follows condition", tok
);
4877 make_cleanup (xfree
, cond
[i
]);
4878 cond_string
[i
] = xstrdup (args
->condition
);
4882 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4883 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4884 args
->tempflag
? del
: donttouch
,
4885 args
->thread
, args
->ignore_count
, 0/*from-tty*/);
4887 /* That's it. Discard the cleanups for data inserted into the
4889 discard_cleanups (breakpoint_chain
);
4890 /* But cleanup everything else. */
4891 do_cleanups (old_chain
);
4896 gdb_breakpoint (char *address
, char *condition
,
4897 int hardwareflag
, int tempflag
,
4898 int thread
, int ignore_count
)
4900 struct captured_breakpoint_args args
;
4901 args
.address
= address
;
4902 args
.condition
= condition
;
4903 args
.hardwareflag
= hardwareflag
;
4904 args
.tempflag
= tempflag
;
4905 args
.thread
= thread
;
4906 args
.ignore_count
= ignore_count
;
4907 return catch_errors (do_captured_breakpoint
, &args
,
4908 NULL
, RETURN_MASK_ALL
);
4913 break_at_finish_at_depth_command_1 (char *arg
, int flag
, int from_tty
)
4915 struct frame_info
*frame
;
4916 CORE_ADDR low
, high
, selected_pc
= 0;
4917 char *extra_args
= NULL
;
4920 int extra_args_len
= 0, if_arg
= 0;
4923 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
4926 if (default_breakpoint_valid
)
4930 selected_pc
= selected_frame
->pc
;
4935 error ("No selected frame.");
4938 error ("No default breakpoint address now.");
4942 extra_args
= strchr (arg
, ' ');
4946 extra_args_len
= strlen (extra_args
);
4947 level_arg
= (char *) xmalloc (extra_args
- arg
);
4948 strncpy (level_arg
, arg
, extra_args
- arg
- 1);
4949 level_arg
[extra_args
- arg
- 1] = '\0';
4953 level_arg
= (char *) xmalloc (strlen (arg
) + 1);
4954 strcpy (level_arg
, arg
);
4957 frame
= parse_frame_specification (level_arg
);
4959 selected_pc
= frame
->pc
;
4966 extra_args_len
= strlen (arg
);
4971 if (find_pc_partial_function (selected_pc
, (char **) NULL
, &low
, &high
))
4973 addr_string
= (char *) xmalloc (26 + extra_args_len
);
4975 sprintf (addr_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
4977 sprintf (addr_string
, "*0x%s", paddr_nz (high
));
4978 break_command_1 (addr_string
, flag
, from_tty
);
4979 xfree (addr_string
);
4982 error ("No function contains the specified address");
4985 error ("Unable to set breakpoint at procedure exit");
4990 break_at_finish_command_1 (char *arg
, int flag
, int from_tty
)
4992 char *addr_string
, *break_string
, *beg_addr_string
;
4993 CORE_ADDR low
, high
;
4994 struct symtabs_and_lines sals
;
4995 struct symtab_and_line sal
;
4996 struct cleanup
*old_chain
;
4997 char *extra_args
= NULL
;
4998 int extra_args_len
= 0;
5002 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5004 if (default_breakpoint_valid
)
5008 addr_string
= (char *) xmalloc (15);
5009 sprintf (addr_string
, "*0x%s", paddr_nz (selected_frame
->pc
));
5014 error ("No selected frame.");
5017 error ("No default breakpoint address now.");
5021 addr_string
= (char *) xmalloc (strlen (arg
) + 1);
5022 strcpy (addr_string
, arg
);
5028 extra_args_len
= strlen (arg
);
5032 /* get the stuff after the function name or address */
5033 extra_args
= strchr (arg
, ' ');
5037 extra_args_len
= strlen (extra_args
);
5044 beg_addr_string
= addr_string
;
5045 sals
= decode_line_1 (&addr_string
, 1, (struct symtab
*) NULL
, 0,
5048 xfree (beg_addr_string
);
5049 old_chain
= make_cleanup (xfree
, sals
.sals
);
5050 for (i
= 0; (i
< sals
.nelts
); i
++)
5053 if (find_pc_partial_function (sal
.pc
, (char **) NULL
, &low
, &high
))
5055 break_string
= (char *) xmalloc (extra_args_len
+ 26);
5057 sprintf (break_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
5059 sprintf (break_string
, "*0x%s", paddr_nz (high
));
5060 break_command_1 (break_string
, flag
, from_tty
);
5061 xfree (break_string
);
5064 error ("No function contains the specified address");
5068 warning ("Multiple breakpoints were set.\n");
5069 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5071 do_cleanups (old_chain
);
5075 /* Helper function for break_command_1 and disassemble_command. */
5078 resolve_sal_pc (struct symtab_and_line
*sal
)
5082 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5084 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5085 error ("No line %d in file \"%s\".",
5086 sal
->line
, sal
->symtab
->filename
);
5090 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5092 struct blockvector
*bv
;
5097 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
5100 b
= BLOCKVECTOR_BLOCK (bv
, index
);
5101 sym
= block_function (b
);
5104 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5105 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5109 /* It really is worthwhile to have the section, so we'll just
5110 have to look harder. This case can be executed if we have
5111 line numbers but no functions (as can happen in assembly
5114 struct minimal_symbol
*msym
;
5116 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5118 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5125 break_command (char *arg
, int from_tty
)
5127 break_command_1 (arg
, 0, from_tty
);
5131 break_at_finish_command (char *arg
, int from_tty
)
5133 break_at_finish_command_1 (arg
, 0, from_tty
);
5137 break_at_finish_at_depth_command (char *arg
, int from_tty
)
5139 break_at_finish_at_depth_command_1 (arg
, 0, from_tty
);
5143 tbreak_command (char *arg
, int from_tty
)
5145 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5149 tbreak_at_finish_command (char *arg
, int from_tty
)
5151 break_at_finish_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5155 hbreak_command (char *arg
, int from_tty
)
5157 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5161 thbreak_command (char *arg
, int from_tty
)
5163 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5167 stop_command (char *arg
, int from_tty
)
5169 printf_filtered ("Specify the type of breakpoint to set.\n\
5170 Usage: stop in <function | address>\n\
5175 stopin_command (char *arg
, int from_tty
)
5179 if (arg
== (char *) NULL
)
5181 else if (*arg
!= '*')
5186 /* look for a ':'. If this is a line number specification, then
5187 say it is bad, otherwise, it should be an address or
5188 function/method name */
5189 while (*argptr
&& !hasColon
)
5191 hasColon
= (*argptr
== ':');
5196 badInput
= (*argptr
!= ':'); /* Not a class::method */
5198 badInput
= isdigit (*arg
); /* a simple line number */
5202 printf_filtered ("Usage: stop in <function | address>\n");
5204 break_command_1 (arg
, 0, from_tty
);
5208 stopat_command (char *arg
, int from_tty
)
5212 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5219 /* look for a ':'. If there is a '::' then get out, otherwise
5220 it is probably a line number. */
5221 while (*argptr
&& !hasColon
)
5223 hasColon
= (*argptr
== ':');
5228 badInput
= (*argptr
== ':'); /* we have class::method */
5230 badInput
= !isdigit (*arg
); /* not a line number */
5234 printf_filtered ("Usage: stop at <line>\n");
5236 break_command_1 (arg
, 0, from_tty
);
5240 /* accessflag: hw_write: watch write,
5241 hw_read: watch read,
5242 hw_access: watch access (read or write) */
5244 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5246 struct breakpoint
*b
;
5247 struct symtab_and_line sal
;
5248 struct expression
*exp
;
5249 struct block
*exp_valid_block
;
5250 struct value
*val
, *mark
;
5251 struct frame_info
*frame
;
5252 struct frame_info
*prev_frame
= NULL
;
5253 char *exp_start
= NULL
;
5254 char *exp_end
= NULL
;
5255 char *tok
, *end_tok
;
5257 char *cond_start
= NULL
;
5258 char *cond_end
= NULL
;
5259 struct expression
*cond
= NULL
;
5260 int i
, other_type_used
, target_resources_ok
= 0;
5261 enum bptype bp_type
;
5264 INIT_SAL (&sal
); /* initialize to zeroes */
5266 /* Parse arguments. */
5267 innermost_block
= NULL
;
5269 exp
= parse_exp_1 (&arg
, 0, 0);
5271 exp_valid_block
= innermost_block
;
5272 mark
= value_mark ();
5273 val
= evaluate_expression (exp
);
5274 release_value (val
);
5275 if (VALUE_LAZY (val
))
5276 value_fetch_lazy (val
);
5279 while (*tok
== ' ' || *tok
== '\t')
5283 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5286 toklen
= end_tok
- tok
;
5287 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5289 tok
= cond_start
= end_tok
+ 1;
5290 cond
= parse_exp_1 (&tok
, 0, 0);
5294 error ("Junk at end of command.");
5296 if (accessflag
== hw_read
)
5297 bp_type
= bp_read_watchpoint
;
5298 else if (accessflag
== hw_access
)
5299 bp_type
= bp_access_watchpoint
;
5301 bp_type
= bp_hardware_watchpoint
;
5303 mem_cnt
= can_use_hardware_watchpoint (val
);
5304 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5305 error ("Expression cannot be implemented with read/access watchpoint.");
5308 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5309 target_resources_ok
=
5310 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5312 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5313 error ("Target does not support this type of hardware watchpoint.");
5315 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5316 error ("Target can only support one kind of HW watchpoint at a time.");
5319 #if defined(HPUXHPPA)
5320 /* On HP-UX if you set a h/w
5321 watchpoint before the "run" command, the inferior dies with a e.g.,
5322 SIGILL once you start it. I initially believed this was due to a
5323 bad interaction between page protection traps and the initial
5324 startup sequence by the dynamic linker.
5326 However, I tried avoiding that by having HP-UX's implementation of
5327 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid
5328 yet, which forced slow watches before a "run" or "attach", and it
5329 still fails somewhere in the startup code.
5331 Until I figure out what's happening, I'm disallowing watches altogether
5332 before the "run" or "attach" command. We'll tell the user they must
5333 set watches after getting the program started. */
5334 if (!target_has_execution
)
5336 warning ("can't do that without a running program; try \"break main\", \"run\" first");
5339 #endif /* HPUXHPPA */
5341 /* Now set up the breakpoint. */
5342 b
= set_raw_breakpoint (sal
);
5343 set_breakpoint_count (breakpoint_count
+ 1);
5344 b
->number
= breakpoint_count
;
5345 b
->disposition
= donttouch
;
5347 b
->exp_valid_block
= exp_valid_block
;
5348 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5352 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5356 frame
= block_innermost_frame (exp_valid_block
);
5359 prev_frame
= get_prev_frame (frame
);
5360 b
->watchpoint_frame
= frame
->frame
;
5363 b
->watchpoint_frame
= (CORE_ADDR
) 0;
5365 if (mem_cnt
&& target_resources_ok
> 0)
5368 b
->type
= bp_watchpoint
;
5370 /* If the expression is "local", then set up a "watchpoint scope"
5371 breakpoint at the point where we've left the scope of the watchpoint
5373 if (innermost_block
)
5377 struct breakpoint
*scope_breakpoint
;
5378 struct symtab_and_line scope_sal
;
5380 INIT_SAL (&scope_sal
); /* initialize to zeroes */
5381 scope_sal
.pc
= get_frame_pc (prev_frame
);
5382 scope_sal
.section
= find_pc_overlay (scope_sal
.pc
);
5384 scope_breakpoint
= set_raw_breakpoint (scope_sal
);
5385 set_breakpoint_count (breakpoint_count
+ 1);
5386 scope_breakpoint
->number
= breakpoint_count
;
5388 scope_breakpoint
->type
= bp_watchpoint_scope
;
5389 scope_breakpoint
->enable
= enabled
;
5391 /* Automatically delete the breakpoint when it hits. */
5392 scope_breakpoint
->disposition
= del
;
5394 /* Only break in the proper frame (help with recursion). */
5395 scope_breakpoint
->frame
= prev_frame
->frame
;
5397 /* Set the address at which we will stop. */
5398 scope_breakpoint
->address
= get_frame_pc (prev_frame
);
5400 /* The scope breakpoint is related to the watchpoint. We
5401 will need to act on them together. */
5402 b
->related_breakpoint
= scope_breakpoint
;
5405 value_free_to_mark (mark
);
5409 /* Return count of locations need to be watched and can be handled
5410 in hardware. If the watchpoint can not be handled
5411 in hardware return zero. */
5413 #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
5414 #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \
5415 ((BYTE_SIZE) <= (REGISTER_SIZE))
5418 #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
5419 #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
5420 (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN))
5424 can_use_hardware_watchpoint (struct value
*v
)
5426 int found_memory_cnt
= 0;
5427 struct value
*head
= v
;
5429 /* Did the user specifically forbid us to use hardware watchpoints? */
5430 if (!can_use_hw_watchpoints
)
5433 /* Make sure that the value of the expression depends only upon
5434 memory contents, and values computed from them within GDB. If we
5435 find any register references or function calls, we can't use a
5436 hardware watchpoint.
5438 The idea here is that evaluating an expression generates a series
5439 of values, one holding the value of every subexpression. (The
5440 expression a*b+c has five subexpressions: a, b, a*b, c, and
5441 a*b+c.) GDB's values hold almost enough information to establish
5442 the criteria given above --- they identify memory lvalues,
5443 register lvalues, computed values, etcetera. So we can evaluate
5444 the expression, and then scan the chain of values that leaves
5445 behind to decide whether we can detect any possible change to the
5446 expression's final value using only hardware watchpoints.
5448 However, I don't think that the values returned by inferior
5449 function calls are special in any way. So this function may not
5450 notice that an expression involving an inferior function call
5451 can't be watched with hardware watchpoints. FIXME. */
5452 for (; v
; v
= v
->next
)
5454 if (VALUE_LVAL (v
) == lval_memory
)
5457 /* A lazy memory lvalue is one that GDB never needed to fetch;
5458 we either just used its address (e.g., `a' in `a.b') or
5459 we never needed it at all (e.g., `a' in `a,b'). */
5463 /* Ahh, memory we actually used! Check if we can cover
5464 it with hardware watchpoints. */
5465 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
5467 /* We only watch structs and arrays if user asked for it
5468 explicitly, never if they just happen to appear in a
5469 middle of some value chain. */
5471 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5472 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5474 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
5475 int len
= TYPE_LENGTH (VALUE_TYPE (v
));
5477 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5484 else if (v
->lval
!= not_lval
&& v
->modifiable
== 0)
5485 return 0; /* ??? What does this represent? */
5486 else if (v
->lval
== lval_register
)
5487 return 0; /* cannot watch a register with a HW watchpoint */
5490 /* The expression itself looks suitable for using a hardware
5491 watchpoint, but give the target machine a chance to reject it. */
5492 return found_memory_cnt
;
5497 watch_command_wrapper (char *arg
, int from_tty
)
5499 watch_command (arg
, from_tty
);
5503 watch_command (char *arg
, int from_tty
)
5505 watch_command_1 (arg
, hw_write
, from_tty
);
5510 rwatch_command_wrapper (char *arg
, int from_tty
)
5512 rwatch_command (arg
, from_tty
);
5516 rwatch_command (char *arg
, int from_tty
)
5518 watch_command_1 (arg
, hw_read
, from_tty
);
5523 awatch_command_wrapper (char *arg
, int from_tty
)
5525 awatch_command (arg
, from_tty
);
5529 awatch_command (char *arg
, int from_tty
)
5531 watch_command_1 (arg
, hw_access
, from_tty
);
5535 /* Helper routines for the until_command routine in infcmd.c. Here
5536 because it uses the mechanisms of breakpoints. */
5538 /* This function is called by fetch_inferior_event via the
5539 cmd_continuation pointer, to complete the until command. It takes
5540 care of cleaning up the temporary breakpoints set up by the until
5543 until_break_command_continuation (struct continuation_arg
*arg
)
5545 struct cleanup
*cleanups
;
5547 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5548 do_exec_cleanups (cleanups
);
5553 until_break_command (char *arg
, int from_tty
)
5555 struct symtabs_and_lines sals
;
5556 struct symtab_and_line sal
;
5557 struct frame_info
*prev_frame
= get_prev_frame (selected_frame
);
5558 struct breakpoint
*breakpoint
;
5559 struct cleanup
*old_chain
;
5560 struct continuation_arg
*arg1
;
5563 clear_proceed_status ();
5565 /* Set a breakpoint where the user wants it and at return from
5568 if (default_breakpoint_valid
)
5569 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5570 default_breakpoint_line
, (char ***) NULL
);
5572 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5573 0, (char ***) NULL
);
5575 if (sals
.nelts
!= 1)
5576 error ("Couldn't get information on specified line.");
5579 xfree (sals
.sals
); /* malloc'd, so freed */
5582 error ("Junk at end of arguments.");
5584 resolve_sal_pc (&sal
);
5586 breakpoint
= set_momentary_breakpoint (sal
, selected_frame
, bp_until
);
5588 if (!event_loop_p
|| !target_can_async_p ())
5589 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5591 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5593 /* If we are running asynchronously, and the target supports async
5594 execution, we are not waiting for the target to stop, in the call
5595 tp proceed, below. This means that we cannot delete the
5596 brekpoints until the target has actually stopped. The only place
5597 where we get a chance to do that is in fetch_inferior_event, so
5598 we must set things up for that. */
5600 if (event_loop_p
&& target_can_async_p ())
5602 /* In this case the arg for the continuation is just the point
5603 in the exec_cleanups chain from where to start doing
5604 cleanups, because all the continuation does is the cleanups in
5605 the exec_cleanup_chain. */
5607 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
5609 arg1
->data
.pointer
= old_chain
;
5611 add_continuation (until_break_command_continuation
, arg1
);
5614 /* Keep within the current frame */
5618 sal
= find_pc_line (prev_frame
->pc
, 0);
5619 sal
.pc
= prev_frame
->pc
;
5620 breakpoint
= set_momentary_breakpoint (sal
, prev_frame
, bp_until
);
5621 if (!event_loop_p
|| !target_can_async_p ())
5622 make_cleanup_delete_breakpoint (breakpoint
);
5624 make_exec_cleanup_delete_breakpoint (breakpoint
);
5627 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
5628 /* Do the cleanups now, anly if we are not running asynchronously,
5629 of if we are, but the target is still synchronous. */
5630 if (!event_loop_p
|| !target_can_async_p ())
5631 do_cleanups (old_chain
);
5635 /* These aren't used; I don't konw what they were for. */
5636 /* Set a breakpoint at the catch clause for NAME. */
5638 catch_breakpoint (char *name
)
5643 disable_catch_breakpoint (void)
5648 delete_catch_breakpoint (void)
5653 enable_catch_breakpoint (void)
5660 struct sal_chain
*next
;
5661 struct symtab_and_line sal
;
5665 /* Not really used -- invocation in handle_gnu_4_16_catch_command
5666 had been commented out in the v.4.16 sources, and stays
5667 disabled there now because "catch NAME" syntax isn't allowed.
5669 /* This isn't used; I don't know what it was for. */
5670 /* For each catch clause identified in ARGS, run FUNCTION
5671 with that clause as an argument. */
5672 static struct symtabs_and_lines
5673 map_catch_names (char *args
, int (*function
) ())
5675 register char *p
= args
;
5677 struct symtabs_and_lines sals
;
5679 struct sal_chain
*sal_chain
= 0;
5683 error_no_arg ("one or more catch names");
5691 /* Don't swallow conditional part. */
5692 if (p1
[0] == 'i' && p1
[1] == 'f'
5693 && (p1
[2] == ' ' || p1
[2] == '\t'))
5699 while (isalnum (*p1
) || *p1
== '_' || *p1
== '$')
5703 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
5704 error ("Arguments must be catch names.");
5710 struct sal_chain
*next
= (struct sal_chain
*)
5711 alloca (sizeof (struct sal_chain
));
5712 next
->next
= sal_chain
;
5713 next
->sal
= get_catch_sal (p
);
5718 printf_unfiltered ("No catch clause for exception %s.\n", p
);
5723 while (*p
== ' ' || *p
== '\t')
5729 /* This shares a lot of code with `print_frame_label_vars' from stack.c. */
5731 static struct symtabs_and_lines
5732 get_catch_sals (int this_level_only
)
5734 register struct blockvector
*bl
;
5735 register struct block
*block
;
5736 int index
, have_default
= 0;
5738 struct symtabs_and_lines sals
;
5739 struct sal_chain
*sal_chain
= 0;
5740 char *blocks_searched
;
5742 /* Not sure whether an error message is always the correct response,
5743 but it's better than a core dump. */
5744 if (selected_frame
== NULL
)
5745 error ("No selected frame.");
5746 block
= get_frame_block (selected_frame
);
5747 pc
= selected_frame
->pc
;
5753 error ("No symbol table info available.\n");
5755 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
5756 blocks_searched
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5757 memset (blocks_searched
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5761 CORE_ADDR end
= BLOCK_END (block
) - 4;
5764 if (bl
!= blockvector_for_pc (end
, &index
))
5765 error ("blockvector blotch");
5766 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
5767 error ("blockvector botch");
5768 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
5771 /* Don't print out blocks that have gone by. */
5772 while (index
< last_index
5773 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
5776 while (index
< last_index
5777 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
5779 if (blocks_searched
[index
] == 0)
5781 struct block
*b
= BLOCKVECTOR_BLOCK (bl
, index
);
5784 register struct symbol
*sym
;
5786 nsyms
= BLOCK_NSYMS (b
);
5788 for (i
= 0; i
< nsyms
; i
++)
5790 sym
= BLOCK_SYM (b
, i
);
5791 if (STREQ (SYMBOL_NAME (sym
), "default"))
5797 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
5799 struct sal_chain
*next
= (struct sal_chain
*)
5800 alloca (sizeof (struct sal_chain
));
5801 next
->next
= sal_chain
;
5802 next
->sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
),
5807 blocks_searched
[index
] = 1;
5813 if (sal_chain
&& this_level_only
)
5816 /* After handling the function's top-level block, stop.
5817 Don't continue to its superblock, the block of
5818 per-file symbols. */
5819 if (BLOCK_FUNCTION (block
))
5821 block
= BLOCK_SUPERBLOCK (block
);
5826 struct sal_chain
*tmp_chain
;
5828 /* Count the number of entries. */
5829 for (index
= 0, tmp_chain
= sal_chain
; tmp_chain
;
5830 tmp_chain
= tmp_chain
->next
)
5834 sals
.sals
= (struct symtab_and_line
*)
5835 xmalloc (index
* sizeof (struct symtab_and_line
));
5836 for (index
= 0; sal_chain
; sal_chain
= sal_chain
->next
, index
++)
5837 sals
.sals
[index
] = sal_chain
->sal
;
5844 ep_skip_leading_whitespace (char **s
)
5846 if ((s
== NULL
) || (*s
== NULL
))
5848 while (isspace (**s
))
5852 /* This function examines a string, and attempts to find a token
5853 that might be an event name in the leading characters. If a
5854 possible match is found, a pointer to the last character of
5855 the token is returned. Else, NULL is returned. */
5858 ep_find_event_name_end (char *arg
)
5861 char *event_name_end
= NULL
;
5863 /* If we could depend upon the presense of strrpbrk, we'd use that... */
5867 /* We break out of the loop when we find a token delimiter.
5868 Basically, we're looking for alphanumerics and underscores;
5869 anything else delimites the token. */
5872 if (!isalnum (*s
) && (*s
!= '_'))
5878 return event_name_end
;
5882 /* This function attempts to parse an optional "if <cond>" clause
5883 from the arg string. If one is not found, it returns NULL.
5885 Else, it returns a pointer to the condition string. (It does not
5886 attempt to evaluate the string against a particular block.) And,
5887 it updates arg to point to the first character following the parsed
5888 if clause in the arg string. */
5891 ep_parse_optional_if_clause (char **arg
)
5895 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
5898 /* Skip the "if" keyword. */
5901 /* Skip any extra leading whitespace, and record the start of the
5902 condition string. */
5903 ep_skip_leading_whitespace (arg
);
5906 /* Assume that the condition occupies the remainder of the arg string. */
5907 (*arg
) += strlen (cond_string
);
5912 /* This function attempts to parse an optional filename from the arg
5913 string. If one is not found, it returns NULL.
5915 Else, it returns a pointer to the parsed filename. (This function
5916 makes no attempt to verify that a file of that name exists, or is
5917 accessible.) And, it updates arg to point to the first character
5918 following the parsed filename in the arg string.
5920 Note that clients needing to preserve the returned filename for
5921 future access should copy it to their own buffers. */
5923 ep_parse_optional_filename (char **arg
)
5925 static char filename
[1024];
5930 if ((*arg_p
== '\0') || isspace (*arg_p
))
5948 /* Commands to deal with catching events, such as signals, exceptions,
5949 process start/exit, etc. */
5953 catch_fork
, catch_vfork
5957 #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
5958 static void catch_fork_command_1 (catch_fork_kind fork_kind
,
5959 char *arg
, int tempflag
, int from_tty
);
5962 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
5965 char *cond_string
= NULL
;
5967 ep_skip_leading_whitespace (&arg
);
5969 /* The allowed syntax is:
5971 catch [v]fork if <cond>
5973 First, check if there's an if clause. */
5974 cond_string
= ep_parse_optional_if_clause (&arg
);
5976 if ((*arg
!= '\0') && !isspace (*arg
))
5977 error ("Junk at end of arguments.");
5979 /* If this target supports it, create a fork or vfork catchpoint
5980 and enable reporting of such events. */
5984 create_fork_event_catchpoint (tempflag
, cond_string
);
5987 create_vfork_event_catchpoint (tempflag
, cond_string
);
5990 error ("unsupported or unknown fork kind; cannot catch it");
5996 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
5998 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6000 char *cond_string
= NULL
;
6002 ep_skip_leading_whitespace (&arg
);
6004 /* The allowed syntax is:
6006 catch exec if <cond>
6008 First, check if there's an if clause. */
6009 cond_string
= ep_parse_optional_if_clause (&arg
);
6011 if ((*arg
!= '\0') && !isspace (*arg
))
6012 error ("Junk at end of arguments.");
6014 /* If this target supports it, create an exec catchpoint
6015 and enable reporting of such events. */
6016 create_exec_event_catchpoint (tempflag
, cond_string
);
6020 #if defined(SOLIB_ADD)
6022 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6024 char *dll_pathname
= NULL
;
6025 char *cond_string
= NULL
;
6027 ep_skip_leading_whitespace (&arg
);
6029 /* The allowed syntax is:
6031 catch load if <cond>
6032 catch load <filename>
6033 catch load <filename> if <cond>
6035 The user is not allowed to specify the <filename> after an
6038 We'll ignore the pathological case of a file named "if".
6040 First, check if there's an if clause. If so, then there
6041 cannot be a filename. */
6042 cond_string
= ep_parse_optional_if_clause (&arg
);
6044 /* If there was an if clause, then there cannot be a filename.
6045 Else, there might be a filename and an if clause. */
6046 if (cond_string
== NULL
)
6048 dll_pathname
= ep_parse_optional_filename (&arg
);
6049 ep_skip_leading_whitespace (&arg
);
6050 cond_string
= ep_parse_optional_if_clause (&arg
);
6053 if ((*arg
!= '\0') && !isspace (*arg
))
6054 error ("Junk at end of arguments.");
6056 /* Create a load breakpoint that only triggers when a load of
6057 the specified dll (or any dll, if no pathname was specified)
6059 SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid
, tempflag
,
6060 dll_pathname
, cond_string
);
6064 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6066 char *dll_pathname
= NULL
;
6067 char *cond_string
= NULL
;
6069 ep_skip_leading_whitespace (&arg
);
6071 /* The allowed syntax is:
6073 catch unload if <cond>
6074 catch unload <filename>
6075 catch unload <filename> if <cond>
6077 The user is not allowed to specify the <filename> after an
6080 We'll ignore the pathological case of a file named "if".
6082 First, check if there's an if clause. If so, then there
6083 cannot be a filename. */
6084 cond_string
= ep_parse_optional_if_clause (&arg
);
6086 /* If there was an if clause, then there cannot be a filename.
6087 Else, there might be a filename and an if clause. */
6088 if (cond_string
== NULL
)
6090 dll_pathname
= ep_parse_optional_filename (&arg
);
6091 ep_skip_leading_whitespace (&arg
);
6092 cond_string
= ep_parse_optional_if_clause (&arg
);
6095 if ((*arg
!= '\0') && !isspace (*arg
))
6096 error ("Junk at end of arguments.");
6098 /* Create an unload breakpoint that only triggers when an unload of
6099 the specified dll (or any dll, if no pathname was specified)
6101 SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid
, tempflag
,
6102 dll_pathname
, cond_string
);
6104 #endif /* SOLIB_ADD */
6106 /* Commands to deal with catching exceptions. */
6108 /* Set a breakpoint at the specified callback routine for an
6109 exception event callback */
6112 create_exception_catchpoint (int tempflag
, char *cond_string
,
6113 enum exception_event_kind ex_event
,
6114 struct symtab_and_line
*sal
)
6116 struct breakpoint
*b
;
6117 int thread
= -1; /* All threads. */
6119 if (!sal
) /* no exception support? */
6122 b
= set_raw_breakpoint (*sal
);
6123 set_breakpoint_count (breakpoint_count
+ 1);
6124 b
->number
= breakpoint_count
;
6126 b
->cond_string
= (cond_string
== NULL
) ?
6127 NULL
: savestring (cond_string
, strlen (cond_string
));
6129 b
->addr_string
= NULL
;
6130 b
->enable
= enabled
;
6131 b
->disposition
= tempflag
? del
: donttouch
;
6134 case EX_EVENT_THROW
:
6135 b
->type
= bp_catch_throw
;
6137 case EX_EVENT_CATCH
:
6138 b
->type
= bp_catch_catch
;
6140 default: /* error condition */
6142 b
->enable
= disabled
;
6143 error ("Internal error -- invalid catchpoint kind");
6148 /* Deal with "catch catch" and "catch throw" commands */
6151 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6152 int tempflag
, int from_tty
)
6154 char *cond_string
= NULL
;
6155 struct symtab_and_line
*sal
= NULL
;
6157 ep_skip_leading_whitespace (&arg
);
6159 cond_string
= ep_parse_optional_if_clause (&arg
);
6161 if ((*arg
!= '\0') && !isspace (*arg
))
6162 error ("Junk at end of arguments.");
6164 if ((ex_event
!= EX_EVENT_THROW
) &&
6165 (ex_event
!= EX_EVENT_CATCH
))
6166 error ("Unsupported or unknown exception event; cannot catch it");
6168 /* See if we can find a callback routine */
6169 sal
= target_enable_exception_callback (ex_event
, 1);
6173 /* We have callbacks from the runtime system for exceptions.
6174 Set a breakpoint on the sal found, if no errors */
6175 if (sal
!= (struct symtab_and_line
*) -1)
6176 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
6178 return; /* something went wrong with setting up callbacks */
6182 /* No callbacks from runtime system for exceptions.
6183 Try GNU C++ exception breakpoints using labels in debug info. */
6184 if (ex_event
== EX_EVENT_CATCH
)
6186 handle_gnu_4_16_catch_command (arg
, tempflag
, from_tty
);
6188 else if (ex_event
== EX_EVENT_THROW
)
6190 /* Set a breakpoint on __raise_exception () */
6192 warning ("Unsupported with this platform/compiler combination.");
6193 warning ("Perhaps you can achieve the effect you want by setting");
6194 warning ("a breakpoint on __raise_exception().");
6199 /* Cover routine to allow wrapping target_enable_exception_catchpoints
6200 inside a catch_errors */
6203 cover_target_enable_exception_callback (PTR arg
)
6205 args_for_catchpoint_enable
*args
= arg
;
6206 struct symtab_and_line
*sal
;
6207 sal
= target_enable_exception_callback (args
->kind
, args
->enable
);
6210 else if (sal
== (struct symtab_and_line
*) -1)
6213 return 1; /*is valid */
6218 /* This is the original v.4.16 and earlier version of the
6219 catch_command_1() function. Now that other flavours of "catch"
6220 have been introduced, and since exception handling can be handled
6221 in other ways (through target ops) also, this is used only for the
6222 GNU C++ exception handling system.
6223 Note: Only the "catch" flavour of GDB 4.16 is handled here. The
6224 "catch NAME" is now no longer allowed in catch_command_1(). Also,
6225 there was no code in GDB 4.16 for "catch throw".
6227 Called from catch_exception_command_1 () */
6231 handle_gnu_4_16_catch_command (char *arg
, int tempflag
, int from_tty
)
6233 /* First, translate ARG into something we can deal with in terms
6236 struct symtabs_and_lines sals
;
6237 struct symtab_and_line sal
;
6238 register struct expression
*cond
= 0;
6239 register struct breakpoint
*b
;
6243 INIT_SAL (&sal
); /* initialize to zeroes */
6245 /* If no arg given, or if first arg is 'if ', all active catch clauses
6246 are breakpointed. */
6248 if (!arg
|| (arg
[0] == 'i' && arg
[1] == 'f'
6249 && (arg
[2] == ' ' || arg
[2] == '\t')))
6251 /* Grab all active catch clauses. */
6252 sals
= get_catch_sals (0);
6256 /* Grab selected catch clauses. */
6257 error ("catch NAME not implemented");
6260 /* Not sure why this code has been disabled. I'm leaving
6261 it disabled. We can never come here now anyway
6262 since we don't allow the "catch NAME" syntax.
6265 /* This isn't used; I don't know what it was for. */
6266 sals
= map_catch_names (arg
, catch_breakpoint
);
6274 for (i
= 0; i
< sals
.nelts
; i
++)
6276 resolve_sal_pc (&sals
.sals
[i
]);
6280 if (arg
[0] == 'i' && arg
[1] == 'f'
6281 && (arg
[2] == ' ' || arg
[2] == '\t'))
6282 cond
= parse_exp_1 ((arg
+= 2, &arg
),
6283 block_for_pc (sals
.sals
[i
].pc
), 0);
6285 error ("Junk at end of arguments.");
6290 for (i
= 0; i
< sals
.nelts
; i
++)
6295 describe_other_breakpoints (sal
.pc
, sal
.section
);
6297 b
= set_raw_breakpoint (sal
);
6298 set_breakpoint_count (breakpoint_count
+ 1);
6299 b
->number
= breakpoint_count
;
6301 /* Important -- this is an ordinary breakpoint. For platforms
6302 with callback support for exceptions,
6303 create_exception_catchpoint() will create special bp types
6304 (bp_catch_catch and bp_catch_throw), and there is code in
6305 insert_breakpoints() and elsewhere that depends on that. */
6306 b
->type
= bp_breakpoint
;
6309 b
->enable
= enabled
;
6310 b
->disposition
= tempflag
? del
: donttouch
;
6317 warning ("Multiple breakpoints were set.");
6318 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
6324 /* This creates a temporary internal breakpoint
6325 just to placate infrun */
6326 static struct breakpoint
*
6327 create_temp_exception_breakpoint (CORE_ADDR pc
)
6329 struct symtab_and_line sal
;
6330 struct breakpoint
*b
;
6337 b
= set_raw_breakpoint (sal
);
6339 error ("Internal error -- couldn't set temp exception breakpoint");
6341 b
->type
= bp_breakpoint
;
6342 b
->disposition
= del
;
6343 b
->enable
= enabled
;
6345 b
->number
= internal_breakpoint_number
--;
6351 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6354 /* The first argument may be an event name, such as "start" or "load".
6355 If so, then handle it as such. If it doesn't match an event name,
6356 then attempt to interpret it as an exception name. (This latter is
6357 the v4.16-and-earlier GDB meaning of the "catch" command.)
6359 First, try to find the bounds of what might be an event name. */
6360 char *arg1_start
= arg
;
6364 if (arg1_start
== NULL
)
6366 /* Old behaviour was to use pre-v-4.16 syntax */
6367 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6369 /* Now, this is not allowed */
6370 error ("Catch requires an event name.");
6373 arg1_end
= ep_find_event_name_end (arg1_start
);
6374 if (arg1_end
== NULL
)
6375 error ("catch requires an event");
6376 arg1_length
= arg1_end
+ 1 - arg1_start
;
6378 /* Try to match what we found against known event names. */
6379 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6381 error ("Catch of signal not yet implemented");
6383 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6385 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6386 tempflag
, from_tty
);
6388 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6390 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6391 tempflag
, from_tty
);
6393 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6395 error ("Catch of thread_start not yet implemented");
6397 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6399 error ("Catch of thread_exit not yet implemented");
6401 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6403 error ("Catch of thread_join not yet implemented");
6405 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6407 error ("Catch of start not yet implemented");
6409 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6411 error ("Catch of exit not yet implemented");
6413 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6415 #if defined(CHILD_INSERT_FORK_CATCHPOINT)
6416 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6418 error ("Catch of fork not yet implemented");
6421 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6423 #if defined(CHILD_INSERT_VFORK_CATCHPOINT)
6424 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6426 error ("Catch of vfork not yet implemented");
6429 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6431 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
6432 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6434 error ("Catch of exec not yet implemented");
6437 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6439 #if defined(SOLIB_ADD)
6440 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6442 error ("Catch of load not implemented");
6445 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6447 #if defined(SOLIB_ADD)
6448 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6450 error ("Catch of load not implemented");
6453 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6455 error ("Catch of stop not yet implemented");
6458 /* This doesn't appear to be an event name */
6462 /* Pre-v.4.16 behaviour was to treat the argument
6463 as the name of an exception */
6464 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6465 /* Now this is not allowed */
6466 error ("Unknown event kind specified for catch");
6471 /* Used by the gui, could be made a worker for other things. */
6474 set_breakpoint_sal (struct symtab_and_line sal
)
6476 struct breakpoint
*b
;
6477 b
= set_raw_breakpoint (sal
);
6478 set_breakpoint_count (breakpoint_count
+ 1);
6479 b
->number
= breakpoint_count
;
6480 b
->type
= bp_breakpoint
;
6487 /* These aren't used; I don't know what they were for. */
6488 /* Disable breakpoints on all catch clauses described in ARGS. */
6490 disable_catch (char *args
)
6492 /* Map the disable command to catch clauses described in ARGS. */
6495 /* Enable breakpoints on all catch clauses described in ARGS. */
6497 enable_catch (char *args
)
6499 /* Map the disable command to catch clauses described in ARGS. */
6502 /* Delete breakpoints on all catch clauses in the active scope. */
6504 delete_catch (char *args
)
6506 /* Map the delete command to catch clauses described in ARGS. */
6511 catch_command (char *arg
, int from_tty
)
6513 catch_command_1 (arg
, 0, from_tty
);
6518 tcatch_command (char *arg
, int from_tty
)
6520 catch_command_1 (arg
, 1, from_tty
);
6525 clear_command (char *arg
, int from_tty
)
6527 register struct breakpoint
*b
, *b1
;
6529 struct symtabs_and_lines sals
;
6530 struct symtab_and_line sal
;
6531 register struct breakpoint
*found
;
6536 sals
= decode_line_spec (arg
, 1);
6541 sals
.sals
= (struct symtab_and_line
*)
6542 xmalloc (sizeof (struct symtab_and_line
));
6543 INIT_SAL (&sal
); /* initialize to zeroes */
6544 sal
.line
= default_breakpoint_line
;
6545 sal
.symtab
= default_breakpoint_symtab
;
6546 sal
.pc
= default_breakpoint_address
;
6547 if (sal
.symtab
== 0)
6548 error ("No source file specified.");
6556 /* For each line spec given, delete bps which correspond
6557 to it. We do this in two loops: the first loop looks at
6558 the initial bp(s) in the chain which should be deleted,
6559 the second goes down the rest of the chain looking ahead
6560 one so it can take those bps off the chain without messing
6564 for (i
= 0; i
< sals
.nelts
; i
++)
6566 /* If exact pc given, clear bpts at that pc.
6567 If line given (pc == 0), clear all bpts on specified line.
6568 If defaulting, clear all bpts on default line
6571 defaulting sal.pc != 0 tests to do
6576 1 0 <can't happen> */
6579 found
= (struct breakpoint
*) 0;
6582 while (breakpoint_chain
6583 /* Why don't we check here that this is not
6584 a watchpoint, etc., as we do below?
6585 I can't make it fail, but don't know
6586 what's stopping the failure: a watchpoint
6587 of the same address as "sal.pc" should
6588 wind up being deleted. */
6590 && (((sal
.pc
&& (breakpoint_chain
->address
== sal
.pc
)) &&
6591 (overlay_debugging
== 0 ||
6592 breakpoint_chain
->section
== sal
.section
))
6593 || ((default_match
|| (0 == sal
.pc
))
6594 && breakpoint_chain
->source_file
!= NULL
6595 && sal
.symtab
!= NULL
6596 && STREQ (breakpoint_chain
->source_file
, sal
.symtab
->filename
)
6597 && breakpoint_chain
->line_number
== sal
.line
)))
6600 b1
= breakpoint_chain
;
6601 breakpoint_chain
= b1
->next
;
6609 && b
->next
->type
!= bp_none
6610 && b
->next
->type
!= bp_watchpoint
6611 && b
->next
->type
!= bp_hardware_watchpoint
6612 && b
->next
->type
!= bp_read_watchpoint
6613 && b
->next
->type
!= bp_access_watchpoint
6614 && (((sal
.pc
&& (b
->next
->address
== sal
.pc
)) &&
6615 (overlay_debugging
== 0 ||
6616 b
->next
->section
== sal
.section
))
6617 || ((default_match
|| (0 == sal
.pc
))
6618 && b
->next
->source_file
!= NULL
6619 && sal
.symtab
!= NULL
6620 && STREQ (b
->next
->source_file
, sal
.symtab
->filename
)
6621 && b
->next
->line_number
== sal
.line
)))
6634 error ("No breakpoint at %s.", arg
);
6636 error ("No breakpoint at this line.");
6640 from_tty
= 1; /* Always report if deleted more than one */
6642 printf_unfiltered ("Deleted breakpoint%s ", found
->next
? "s" : "");
6643 breakpoints_changed ();
6647 printf_unfiltered ("%d ", found
->number
);
6649 delete_breakpoint (found
);
6653 putchar_unfiltered ('\n');
6658 /* Delete breakpoint in BS if they are `delete' breakpoints and
6659 all breakpoints that are marked for deletion, whether hit or not.
6660 This is called after any breakpoint is hit, or after errors. */
6663 breakpoint_auto_delete (bpstat bs
)
6665 struct breakpoint
*b
, *temp
;
6667 for (; bs
; bs
= bs
->next
)
6668 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== del
6670 delete_breakpoint (bs
->breakpoint_at
);
6672 ALL_BREAKPOINTS_SAFE (b
, temp
)
6674 if (b
->disposition
== del_at_next_stop
)
6675 delete_breakpoint (b
);
6679 /* Delete a breakpoint and clean up all traces of it in the data
6683 delete_breakpoint (struct breakpoint
*bpt
)
6685 register struct breakpoint
*b
;
6689 error ("Internal error (attempted to delete a NULL breakpoint)");
6692 /* Has this bp already been deleted? This can happen because multiple
6693 lists can hold pointers to bp's. bpstat lists are especial culprits.
6695 One example of this happening is a watchpoint's scope bp. When the
6696 scope bp triggers, we notice that the watchpoint is out of scope, and
6697 delete it. We also delete its scope bp. But the scope bp is marked
6698 "auto-deleting", and is already on a bpstat. That bpstat is then
6699 checked for auto-deleting bp's, which are deleted.
6701 A real solution to this problem might involve reference counts in bp's,
6702 and/or giving them pointers back to their referencing bpstat's, and
6703 teaching delete_breakpoint to only free a bp's storage when no more
6704 references were extent. A cheaper bandaid was chosen. */
6705 if (bpt
->type
== bp_none
)
6708 if (delete_breakpoint_hook
)
6709 delete_breakpoint_hook (bpt
);
6710 breakpoint_delete_event (bpt
->number
);
6713 remove_breakpoint (bpt
, mark_uninserted
);
6715 if (breakpoint_chain
== bpt
)
6716 breakpoint_chain
= bpt
->next
;
6718 /* If we have callback-style exception catchpoints, don't go through
6719 the adjustments to the C++ runtime library etc. if the inferior
6720 isn't actually running. target_enable_exception_callback for a
6721 null target ops vector gives an undesirable error message, so we
6722 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
6723 exceptions are supported in this way, it's OK for now. FIXME */
6724 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
6726 static char message1
[] = "Error in deleting catchpoint %d:\n";
6727 static char message
[sizeof (message1
) + 30];
6728 args_for_catchpoint_enable args
;
6730 /* Format possible error msg */
6731 sprintf (message
, message1
, bpt
->number
);
6732 args
.kind
= bpt
->type
== bp_catch_catch
?
6733 EX_EVENT_CATCH
: EX_EVENT_THROW
;
6735 catch_errors (cover_target_enable_exception_callback
, &args
,
6736 message
, RETURN_MASK_ALL
);
6743 b
->next
= bpt
->next
;
6747 /* Before turning off the visuals for the bp, check to see that
6748 there are no other bps at the same address. */
6755 clearIt
= (b
->address
!= bpt
->address
);
6762 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, bpt
, 0));
6763 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
6767 check_duplicates (bpt
->address
, bpt
->section
);
6768 /* If this breakpoint was inserted, and there is another breakpoint
6769 at the same address, we need to insert the other breakpoint. */
6771 && bpt
->type
!= bp_hardware_watchpoint
6772 && bpt
->type
!= bp_read_watchpoint
6773 && bpt
->type
!= bp_access_watchpoint
6774 && bpt
->type
!= bp_catch_fork
6775 && bpt
->type
!= bp_catch_vfork
6776 && bpt
->type
!= bp_catch_exec
)
6779 if (b
->address
== bpt
->address
6780 && b
->section
== bpt
->section
6782 && b
->enable
!= disabled
6783 && b
->enable
!= shlib_disabled
6784 && b
->enable
!= call_disabled
)
6788 /* We should never reach this point if there is a permanent
6789 breakpoint at the same address as the one being deleted.
6790 If there is a permanent breakpoint somewhere, it should
6791 always be the only one inserted. */
6792 if (b
->enable
== permanent
)
6793 internal_error (__FILE__
, __LINE__
,
6794 "another breakpoint was inserted on top of "
6795 "a permanent breakpoint");
6797 if (b
->type
== bp_hardware_breakpoint
)
6798 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
6800 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
6804 target_terminal_ours_for_output ();
6805 warning ("Cannot insert breakpoint %d:", b
->number
);
6806 memory_error (val
, b
->address
); /* which bombs us out */
6813 free_command_lines (&bpt
->commands
);
6816 if (bpt
->cond_string
!= NULL
)
6817 xfree (bpt
->cond_string
);
6818 if (bpt
->addr_string
!= NULL
)
6819 xfree (bpt
->addr_string
);
6820 if (bpt
->exp
!= NULL
)
6822 if (bpt
->exp_string
!= NULL
)
6823 xfree (bpt
->exp_string
);
6824 if (bpt
->val
!= NULL
)
6825 value_free (bpt
->val
);
6826 if (bpt
->source_file
!= NULL
)
6827 xfree (bpt
->source_file
);
6828 if (bpt
->dll_pathname
!= NULL
)
6829 xfree (bpt
->dll_pathname
);
6830 if (bpt
->triggered_dll_pathname
!= NULL
)
6831 xfree (bpt
->triggered_dll_pathname
);
6832 if (bpt
->exec_pathname
!= NULL
)
6833 xfree (bpt
->exec_pathname
);
6835 /* Be sure no bpstat's are pointing at it after it's been freed. */
6836 /* FIXME, how can we find all bpstat's?
6837 We just check stop_bpstat for now. */
6838 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6839 if (bs
->breakpoint_at
== bpt
)
6841 bs
->breakpoint_at
= NULL
;
6843 /* we'd call bpstat_clear_actions, but that free's stuff and due
6844 to the multiple pointers pointing to one item with no
6845 reference counts found anywhere through out the bpstat's (how
6846 do you spell fragile?), we don't want to free things twice --
6847 better a memory leak than a corrupt malloc pool! */
6848 bs
->commands
= NULL
;
6851 /* On the chance that someone will soon try again to delete this same
6852 bp, we mark it as deleted before freeing its storage. */
6853 bpt
->type
= bp_none
;
6859 do_delete_breakpoint_cleanup (void *b
)
6861 delete_breakpoint (b
);
6865 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6867 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6871 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6873 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6877 delete_command (char *arg
, int from_tty
)
6879 struct breakpoint
*b
, *temp
;
6883 int breaks_to_delete
= 0;
6885 /* Delete all breakpoints if no argument.
6886 Do not delete internal or call-dummy breakpoints, these
6887 have to be deleted with an explicit breakpoint number argument. */
6890 if (b
->type
!= bp_call_dummy
&&
6891 b
->type
!= bp_shlib_event
&&
6892 b
->type
!= bp_thread_event
&&
6894 breaks_to_delete
= 1;
6897 /* Ask user only if there are some breakpoints to delete. */
6899 || (breaks_to_delete
&& query ("Delete all breakpoints? ")))
6901 ALL_BREAKPOINTS_SAFE (b
, temp
)
6903 if (b
->type
!= bp_call_dummy
&&
6904 b
->type
!= bp_shlib_event
&&
6905 b
->type
!= bp_thread_event
&&
6907 delete_breakpoint (b
);
6912 map_breakpoint_numbers (arg
, delete_breakpoint
);
6915 /* Reset a breakpoint given it's struct breakpoint * BINT.
6916 The value we return ends up being the return value from catch_errors.
6917 Unused in this case. */
6920 breakpoint_re_set_one (PTR bint
)
6922 /* get past catch_errs */
6923 struct breakpoint
*b
= (struct breakpoint
*) bint
;
6926 struct symtabs_and_lines sals
;
6928 enum enable save_enable
;
6933 warning ("attempted to reset apparently deleted breakpoint #%d?",
6937 case bp_hardware_breakpoint
:
6939 case bp_catch_unload
:
6940 if (b
->addr_string
== NULL
)
6942 /* Anything without a string can't be re-set. */
6943 delete_breakpoint (b
);
6946 /* In case we have a problem, disable this breakpoint. We'll restore
6947 its status if we succeed. */
6948 save_enable
= b
->enable
;
6949 b
->enable
= disabled
;
6951 set_language (b
->language
);
6952 input_radix
= b
->input_radix
;
6954 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
);
6955 for (i
= 0; i
< sals
.nelts
; i
++)
6957 resolve_sal_pc (&sals
.sals
[i
]);
6959 /* Reparse conditions, they might contain references to the
6961 if (b
->cond_string
!= NULL
)
6966 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
6969 /* We need to re-set the breakpoint if the address changes... */
6970 if (b
->address
!= sals
.sals
[i
].pc
6971 /* ...or new and old breakpoints both have source files, and
6972 the source file name or the line number changes... */
6973 || (b
->source_file
!= NULL
6974 && sals
.sals
[i
].symtab
!= NULL
6975 && (!STREQ (b
->source_file
, sals
.sals
[i
].symtab
->filename
)
6976 || b
->line_number
!= sals
.sals
[i
].line
)
6978 /* ...or we switch between having a source file and not having
6980 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
6983 if (b
->source_file
!= NULL
)
6984 xfree (b
->source_file
);
6985 if (sals
.sals
[i
].symtab
== NULL
)
6986 b
->source_file
= NULL
;
6989 savestring (sals
.sals
[i
].symtab
->filename
,
6990 strlen (sals
.sals
[i
].symtab
->filename
));
6991 b
->line_number
= sals
.sals
[i
].line
;
6992 b
->address
= sals
.sals
[i
].pc
;
6994 /* Used to check for duplicates here, but that can
6995 cause trouble, as it doesn't check for disable
7000 /* Might be better to do this just once per breakpoint_re_set,
7001 rather than once for every breakpoint. */
7002 breakpoints_changed ();
7004 b
->section
= sals
.sals
[i
].section
;
7005 b
->enable
= save_enable
; /* Restore it, this worked. */
7008 /* Now that this is re-enabled, check_duplicates
7010 check_duplicates (b
->address
, b
->section
);
7017 case bp_hardware_watchpoint
:
7018 case bp_read_watchpoint
:
7019 case bp_access_watchpoint
:
7020 innermost_block
= NULL
;
7021 /* The issue arises of what context to evaluate this in. The
7022 same one as when it was set, but what does that mean when
7023 symbols have been re-read? We could save the filename and
7024 functionname, but if the context is more local than that, the
7025 best we could do would be something like how many levels deep
7026 and which index at that particular level, but that's going to
7027 be less stable than filenames or function names. */
7029 /* So for now, just use a global context. */
7032 b
->exp
= parse_expression (b
->exp_string
);
7033 b
->exp_valid_block
= innermost_block
;
7034 mark
= value_mark ();
7036 value_free (b
->val
);
7037 b
->val
= evaluate_expression (b
->exp
);
7038 release_value (b
->val
);
7039 if (VALUE_LAZY (b
->val
))
7040 value_fetch_lazy (b
->val
);
7042 if (b
->cond_string
!= NULL
)
7047 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7049 if (b
->enable
== enabled
)
7051 value_free_to_mark (mark
);
7053 case bp_catch_catch
:
7054 case bp_catch_throw
:
7056 /* We needn't really do anything to reset these, since the mask
7057 that requests them is unaffected by e.g., new libraries being
7060 case bp_catch_vfork
:
7065 printf_filtered ("Deleting unknown breakpoint type %d\n", b
->type
);
7067 /* Delete longjmp breakpoints, they will be reset later by
7068 breakpoint_re_set. */
7070 case bp_longjmp_resume
:
7071 delete_breakpoint (b
);
7074 /* This breakpoint is special, it's set up when the inferior
7075 starts and we really don't want to touch it. */
7076 case bp_shlib_event
:
7078 /* Like bp_shlib_event, this breakpoint type is special.
7079 Once it is set up, we do not want to touch it. */
7080 case bp_thread_event
:
7082 /* Keep temporary breakpoints, which can be encountered when we step
7083 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7084 Otherwise these should have been blown away via the cleanup chain
7085 or by breakpoint_init_inferior when we rerun the executable. */
7088 case bp_watchpoint_scope
:
7090 case bp_step_resume
:
7097 /* Re-set all breakpoints after symbols have been re-loaded. */
7099 breakpoint_re_set (void)
7101 struct breakpoint
*b
, *temp
;
7102 enum language save_language
;
7103 int save_input_radix
;
7104 static char message1
[] = "Error in re-setting breakpoint %d:\n";
7105 char message
[sizeof (message1
) + 30 /* slop */ ];
7107 save_language
= current_language
->la_language
;
7108 save_input_radix
= input_radix
;
7109 ALL_BREAKPOINTS_SAFE (b
, temp
)
7111 /* Format possible error msg */
7112 sprintf (message
, message1
, b
->number
);
7113 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7115 set_language (save_language
);
7116 input_radix
= save_input_radix
;
7118 #ifdef GET_LONGJMP_TARGET
7119 create_longjmp_breakpoint ("longjmp");
7120 create_longjmp_breakpoint ("_longjmp");
7121 create_longjmp_breakpoint ("siglongjmp");
7122 create_longjmp_breakpoint ("_siglongjmp");
7123 create_longjmp_breakpoint (NULL
);
7127 /* Took this out (temporarily at least), since it produces an extra
7128 blank line at startup. This messes up the gdbtests. -PB */
7129 /* Blank line to finish off all those mention() messages we just printed. */
7130 printf_filtered ("\n");
7134 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7135 If from_tty is nonzero, it prints a message to that effect,
7136 which ends with a period (no newline). */
7138 /* Reset the thread number of this breakpoint:
7140 - If the breakpoint is for all threads, leave it as-is.
7141 - Else, reset it to the current thread for inferior_pid. */
7143 breakpoint_re_set_thread (struct breakpoint
*b
)
7145 if (b
->thread
!= -1)
7147 if (in_thread_list (inferior_pid
))
7148 b
->thread
= pid_to_thread_id (inferior_pid
);
7153 set_ignore_count (int bptnum
, int count
, int from_tty
)
7155 register struct breakpoint
*b
;
7161 if (b
->number
== bptnum
)
7163 b
->ignore_count
= count
;
7166 else if (count
== 0)
7167 printf_filtered ("Will stop next time breakpoint %d is reached.",
7169 else if (count
== 1)
7170 printf_filtered ("Will ignore next crossing of breakpoint %d.",
7173 printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
7175 breakpoints_changed ();
7179 error ("No breakpoint number %d.", bptnum
);
7182 /* Clear the ignore counts of all breakpoints. */
7184 breakpoint_clear_ignore_counts (void)
7186 struct breakpoint
*b
;
7189 b
->ignore_count
= 0;
7192 /* Command to set ignore-count of breakpoint N to COUNT. */
7195 ignore_command (char *args
, int from_tty
)
7201 error_no_arg ("a breakpoint number");
7203 num
= get_number (&p
);
7205 error ("bad breakpoint number: '%s'", args
);
7207 error ("Second argument (specified ignore-count) is missing.");
7209 set_ignore_count (num
,
7210 longest_to_int (value_as_long (parse_and_eval (p
))),
7212 printf_filtered ("\n");
7213 breakpoints_changed ();
7216 /* Call FUNCTION on each of the breakpoints
7217 whose numbers are given in ARGS. */
7220 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7222 register char *p
= args
;
7225 register struct breakpoint
*b
, *tmp
;
7229 error_no_arg ("one or more breakpoint numbers");
7236 num
= get_number_or_range (&p1
);
7239 warning ("bad breakpoint number at or near '%s'", p
);
7243 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7244 if (b
->number
== num
)
7246 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7249 if (related_breakpoint
)
7250 function (related_breakpoint
);
7254 printf_unfiltered ("No breakpoint number %d.\n", num
);
7261 disable_breakpoint (struct breakpoint
*bpt
)
7263 /* Never disable a watchpoint scope breakpoint; we want to
7264 hit them when we leave scope so we can delete both the
7265 watchpoint and its scope breakpoint at that time. */
7266 if (bpt
->type
== bp_watchpoint_scope
)
7269 /* You can't disable permanent breakpoints. */
7270 if (bpt
->enable
== permanent
)
7273 bpt
->enable
= disabled
;
7275 check_duplicates (bpt
->address
, bpt
->section
);
7277 if (modify_breakpoint_hook
)
7278 modify_breakpoint_hook (bpt
);
7279 breakpoint_modify_event (bpt
->number
);
7284 disable_command (char *args
, int from_tty
)
7286 register struct breakpoint
*bpt
;
7288 ALL_BREAKPOINTS (bpt
)
7292 warning ("attempted to disable apparently deleted breakpoint #%d?",
7297 case bp_catch_unload
:
7299 case bp_catch_vfork
:
7301 case bp_catch_catch
:
7302 case bp_catch_throw
:
7303 case bp_hardware_breakpoint
:
7305 case bp_hardware_watchpoint
:
7306 case bp_read_watchpoint
:
7307 case bp_access_watchpoint
:
7308 disable_breakpoint (bpt
);
7313 map_breakpoint_numbers (args
, disable_breakpoint
);
7317 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7319 struct frame_info
*save_selected_frame
= NULL
;
7320 int save_selected_frame_level
= -1;
7321 int target_resources_ok
, other_type_used
;
7324 if (bpt
->type
== bp_hardware_breakpoint
)
7327 i
= hw_breakpoint_used_count ();
7328 target_resources_ok
=
7329 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7331 if (target_resources_ok
== 0)
7332 error ("No hardware breakpoint support in the target.");
7333 else if (target_resources_ok
< 0)
7334 error ("Hardware breakpoints used exceeds limit.");
7337 if (bpt
->enable
!= permanent
)
7338 bpt
->enable
= enabled
;
7339 bpt
->disposition
= disposition
;
7340 check_duplicates (bpt
->address
, bpt
->section
);
7341 breakpoints_changed ();
7343 if (bpt
->type
== bp_watchpoint
||
7344 bpt
->type
== bp_hardware_watchpoint
||
7345 bpt
->type
== bp_read_watchpoint
||
7346 bpt
->type
== bp_access_watchpoint
)
7348 if (bpt
->exp_valid_block
!= NULL
)
7350 struct frame_info
*fr
=
7352 /* Ensure that we have the current frame. Else, this
7353 next query may pessimistically be answered as, "No,
7354 not within current scope". */
7355 get_current_frame ();
7356 fr
= find_frame_addr_in_frame_chain (bpt
->watchpoint_frame
);
7360 Cannot enable watchpoint %d because the block in which its expression\n\
7361 is valid is not currently in scope.\n", bpt
->number
);
7362 bpt
->enable
= disabled
;
7366 save_selected_frame
= selected_frame
;
7367 save_selected_frame_level
= selected_frame_level
;
7368 select_frame (fr
, -1);
7371 value_free (bpt
->val
);
7372 mark
= value_mark ();
7373 bpt
->val
= evaluate_expression (bpt
->exp
);
7374 release_value (bpt
->val
);
7375 if (VALUE_LAZY (bpt
->val
))
7376 value_fetch_lazy (bpt
->val
);
7378 if (bpt
->type
== bp_hardware_watchpoint
||
7379 bpt
->type
== bp_read_watchpoint
||
7380 bpt
->type
== bp_access_watchpoint
)
7382 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7383 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7385 /* Hack around 'unused var' error for some targets here */
7387 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7388 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7389 /* we can consider of type is bp_hardware_watchpoint, convert to
7390 bp_watchpoint in the following condition */
7391 if (target_resources_ok
< 0)
7394 Cannot enable watchpoint %d because target watch resources\n\
7395 have been allocated for other watchpoints.\n", bpt
->number
);
7396 bpt
->enable
= disabled
;
7397 value_free_to_mark (mark
);
7402 if (save_selected_frame_level
>= 0)
7403 select_frame (save_selected_frame
, save_selected_frame_level
);
7404 value_free_to_mark (mark
);
7406 if (modify_breakpoint_hook
)
7407 modify_breakpoint_hook (bpt
);
7408 breakpoint_modify_event (bpt
->number
);
7412 enable_breakpoint (struct breakpoint
*bpt
)
7414 do_enable_breakpoint (bpt
, bpt
->disposition
);
7417 /* The enable command enables the specified breakpoints (or all defined
7418 breakpoints) so they once again become (or continue to be) effective
7419 in stopping the inferior. */
7423 enable_command (char *args
, int from_tty
)
7425 register struct breakpoint
*bpt
;
7427 ALL_BREAKPOINTS (bpt
)
7431 warning ("attempted to enable apparently deleted breakpoint #%d?",
7436 case bp_catch_unload
:
7438 case bp_catch_vfork
:
7440 case bp_catch_catch
:
7441 case bp_catch_throw
:
7442 case bp_hardware_breakpoint
:
7444 case bp_hardware_watchpoint
:
7445 case bp_read_watchpoint
:
7446 case bp_access_watchpoint
:
7447 enable_breakpoint (bpt
);
7452 map_breakpoint_numbers (args
, enable_breakpoint
);
7456 enable_once_breakpoint (struct breakpoint
*bpt
)
7458 do_enable_breakpoint (bpt
, disable
);
7463 enable_once_command (char *args
, int from_tty
)
7465 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7469 enable_delete_breakpoint (struct breakpoint
*bpt
)
7471 do_enable_breakpoint (bpt
, del
);
7476 enable_delete_command (char *args
, int from_tty
)
7478 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7481 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7483 struct symtabs_and_lines
7484 decode_line_spec_1 (char *string
, int funfirstline
)
7486 struct symtabs_and_lines sals
;
7488 error ("Empty line specification.");
7489 if (default_breakpoint_valid
)
7490 sals
= decode_line_1 (&string
, funfirstline
,
7491 default_breakpoint_symtab
,
7492 default_breakpoint_line
,
7495 sals
= decode_line_1 (&string
, funfirstline
,
7496 (struct symtab
*) NULL
, 0, (char ***) NULL
);
7498 error ("Junk at end of line specification: %s", string
);
7503 _initialize_breakpoint (void)
7505 struct cmd_list_element
*c
;
7507 breakpoint_chain
= 0;
7508 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7509 before a breakpoint is set. */
7510 breakpoint_count
= 0;
7512 add_com ("ignore", class_breakpoint
, ignore_command
,
7513 "Set ignore-count of breakpoint number N to COUNT.\n\
7514 Usage is `ignore N COUNT'.");
7516 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7518 add_com ("commands", class_breakpoint
, commands_command
,
7519 "Set commands to be executed when a breakpoint is hit.\n\
7520 Give breakpoint number as argument after \"commands\".\n\
7521 With no argument, the targeted breakpoint is the last one set.\n\
7522 The commands themselves follow starting on the next line.\n\
7523 Type a line containing \"end\" to indicate the end of them.\n\
7524 Give \"silent\" as the first line to make the breakpoint silent;\n\
7525 then no output is printed when it is hit, except what the commands print.");
7527 add_com ("condition", class_breakpoint
, condition_command
,
7528 "Specify breakpoint number N to break only if COND is true.\n\
7529 Usage is `condition N COND', where N is an integer and COND is an\n\
7530 expression to be evaluated whenever breakpoint N is reached. ");
7532 add_com ("tbreak", class_breakpoint
, tbreak_command
,
7533 "Set a temporary breakpoint. Args like \"break\" command.\n\
7534 Like \"break\" except the breakpoint is only temporary,\n\
7535 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7536 by using \"enable delete\" on the breakpoint number.");
7537 add_com ("txbreak", class_breakpoint
, tbreak_at_finish_command
,
7538 "Set temporary breakpoint at procedure exit. Either there should\n\
7539 be no argument or the argument must be a depth.\n");
7541 add_com ("hbreak", class_breakpoint
, hbreak_command
,
7542 "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
7543 Like \"break\" except the breakpoint requires hardware support,\n\
7544 some target hardware may not have this support.");
7546 add_com ("thbreak", class_breakpoint
, thbreak_command
,
7547 "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
7548 Like \"hbreak\" except the breakpoint is only temporary,\n\
7549 so it will be deleted when hit.");
7551 add_prefix_cmd ("enable", class_breakpoint
, enable_command
,
7552 "Enable some breakpoints.\n\
7553 Give breakpoint numbers (separated by spaces) as arguments.\n\
7554 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7555 This is used to cancel the effect of the \"disable\" command.\n\
7556 With a subcommand you can enable temporarily.",
7557 &enablelist
, "enable ", 1, &cmdlist
);
7559 add_com ("ab", class_breakpoint
, enable_command
,
7560 "Enable some breakpoints.\n\
7561 Give breakpoint numbers (separated by spaces) as arguments.\n\
7562 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7563 This is used to cancel the effect of the \"disable\" command.\n\
7564 With a subcommand you can enable temporarily.");
7566 add_com_alias ("en", "enable", class_breakpoint
, 1);
7568 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
,
7569 "Enable some breakpoints.\n\
7570 Give breakpoint numbers (separated by spaces) as arguments.\n\
7571 This is used to cancel the effect of the \"disable\" command.\n\
7572 May be abbreviated to simply \"enable\".\n",
7573 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7575 add_cmd ("once", no_class
, enable_once_command
,
7576 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7577 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7580 add_cmd ("delete", no_class
, enable_delete_command
,
7581 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7582 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7585 add_cmd ("delete", no_class
, enable_delete_command
,
7586 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7587 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7590 add_cmd ("once", no_class
, enable_once_command
,
7591 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7592 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7595 add_prefix_cmd ("disable", class_breakpoint
, disable_command
,
7596 "Disable some breakpoints.\n\
7597 Arguments are breakpoint numbers with spaces in between.\n\
7598 To disable all breakpoints, give no argument.\n\
7599 A disabled breakpoint is not forgotten, but has no effect until reenabled.",
7600 &disablelist
, "disable ", 1, &cmdlist
);
7601 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7602 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7604 add_com ("sb", class_breakpoint
, disable_command
,
7605 "Disable some breakpoints.\n\
7606 Arguments are breakpoint numbers with spaces in between.\n\
7607 To disable all breakpoints, give no argument.\n\
7608 A disabled breakpoint is not forgotten, but has no effect until reenabled.");
7610 add_cmd ("breakpoints", class_alias
, disable_command
,
7611 "Disable some breakpoints.\n\
7612 Arguments are breakpoint numbers with spaces in between.\n\
7613 To disable all breakpoints, give no argument.\n\
7614 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7615 This command may be abbreviated \"disable\".",
7618 add_prefix_cmd ("delete", class_breakpoint
, delete_command
,
7619 "Delete some breakpoints or auto-display expressions.\n\
7620 Arguments are breakpoint numbers with spaces in between.\n\
7621 To delete all breakpoints, give no argument.\n\
7623 Also a prefix command for deletion of other GDB objects.\n\
7624 The \"unset\" command is also an alias for \"delete\".",
7625 &deletelist
, "delete ", 1, &cmdlist
);
7626 add_com_alias ("d", "delete", class_breakpoint
, 1);
7628 add_com ("db", class_breakpoint
, delete_command
,
7629 "Delete some breakpoints.\n\
7630 Arguments are breakpoint numbers with spaces in between.\n\
7631 To delete all breakpoints, give no argument.\n");
7633 add_cmd ("breakpoints", class_alias
, delete_command
,
7634 "Delete some breakpoints or auto-display expressions.\n\
7635 Arguments are breakpoint numbers with spaces in between.\n\
7636 To delete all breakpoints, give no argument.\n\
7637 This command may be abbreviated \"delete\".",
7640 add_com ("clear", class_breakpoint
, clear_command
,
7641 concat ("Clear breakpoint at specified line or function.\n\
7642 Argument may be line number, function name, or \"*\" and an address.\n\
7643 If line number is specified, all breakpoints in that line are cleared.\n\
7644 If function is specified, breakpoints at beginning of function are cleared.\n\
7645 If an address is specified, breakpoints at that address are cleared.\n\n",
7646 "With no argument, clears all breakpoints in the line that the selected frame\n\
7649 See also the \"delete\" command which clears breakpoints by number.", NULL
));
7651 add_com ("break", class_breakpoint
, break_command
,
7652 concat ("Set breakpoint at specified line or function.\n\
7653 Argument may be line number, function name, or \"*\" and an address.\n\
7654 If line number is specified, break at start of code for that line.\n\
7655 If function is specified, break at start of code for that function.\n\
7656 If an address is specified, break at that exact address.\n",
7657 "With no arg, uses current execution address of selected stack frame.\n\
7658 This is useful for breaking on return to a stack frame.\n\
7660 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7662 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7663 add_com_alias ("b", "break", class_run
, 1);
7664 add_com_alias ("br", "break", class_run
, 1);
7665 add_com_alias ("bre", "break", class_run
, 1);
7666 add_com_alias ("brea", "break", class_run
, 1);
7668 add_com ("xbreak", class_breakpoint
, break_at_finish_command
,
7669 concat ("Set breakpoint at procedure exit. \n\
7670 Argument may be function name, or \"*\" and an address.\n\
7671 If function is specified, break at end of code for that function.\n\
7672 If an address is specified, break at the end of the function that contains \n\
7673 that exact address.\n",
7674 "With no arg, uses current execution address of selected stack frame.\n\
7675 This is useful for breaking on return to a stack frame.\n\
7677 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7679 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7680 add_com_alias ("xb", "xbreak", class_breakpoint
, 1);
7681 add_com_alias ("xbr", "xbreak", class_breakpoint
, 1);
7682 add_com_alias ("xbre", "xbreak", class_breakpoint
, 1);
7683 add_com_alias ("xbrea", "xbreak", class_breakpoint
, 1);
7687 add_com_alias ("ba", "break", class_breakpoint
, 1);
7688 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
7689 add_com ("bx", class_breakpoint
, break_at_finish_at_depth_command
,
7690 "Set breakpoint at procedure exit. Either there should\n\
7691 be no argument or the argument must be a depth.\n");
7696 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
,
7697 "Break in function/address or break at a line in the current file.",
7698 &stoplist
, "stop ", 1, &cmdlist
);
7699 add_cmd ("in", class_breakpoint
, stopin_command
,
7700 "Break in function or address.\n", &stoplist
);
7701 add_cmd ("at", class_breakpoint
, stopat_command
,
7702 "Break at a line in the current file.\n", &stoplist
);
7703 add_com ("status", class_info
, breakpoints_info
,
7704 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7705 The \"Type\" column indicates one of:\n\
7706 \tbreakpoint - normal breakpoint\n\
7707 \twatchpoint - watchpoint\n\
7708 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7709 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7710 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7711 address and file/line number respectively.\n\n",
7712 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7713 are set to the address of the last breakpoint listed.\n\n\
7714 Convenience variable \"$bpnum\" contains the number of the last\n\
7715 breakpoint set.", NULL
));
7718 add_info ("breakpoints", breakpoints_info
,
7719 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7720 The \"Type\" column indicates one of:\n\
7721 \tbreakpoint - normal breakpoint\n\
7722 \twatchpoint - watchpoint\n\
7723 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7724 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7725 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7726 address and file/line number respectively.\n\n",
7727 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7728 are set to the address of the last breakpoint listed.\n\n\
7729 Convenience variable \"$bpnum\" contains the number of the last\n\
7730 breakpoint set.", NULL
));
7733 add_com ("lb", class_breakpoint
, breakpoints_info
,
7734 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7735 The \"Type\" column indicates one of:\n\
7736 \tbreakpoint - normal breakpoint\n\
7737 \twatchpoint - watchpoint\n\
7738 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7739 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7740 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7741 address and file/line number respectively.\n\n",
7742 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7743 are set to the address of the last breakpoint listed.\n\n\
7744 Convenience variable \"$bpnum\" contains the number of the last\n\
7745 breakpoint set.", NULL
));
7747 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
,
7748 concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
7749 The \"Type\" column indicates one of:\n\
7750 \tbreakpoint - normal breakpoint\n\
7751 \twatchpoint - watchpoint\n\
7752 \tlongjmp - internal breakpoint used to step through longjmp()\n\
7753 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
7754 \tuntil - internal breakpoint used by the \"until\" command\n\
7755 \tfinish - internal breakpoint used by the \"finish\" command\n",
7756 "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7757 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7758 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7759 address and file/line number respectively.\n\n",
7760 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7761 are set to the address of the last breakpoint listed.\n\n\
7762 Convenience variable \"$bpnum\" contains the number of the last\n\
7763 breakpoint set.", NULL
),
7764 &maintenanceinfolist
);
7766 add_com ("catch", class_breakpoint
, catch_command
,
7767 "Set catchpoints to catch events.\n\
7768 Raised signals may be caught:\n\
7769 \tcatch signal - all signals\n\
7770 \tcatch signal <signame> - a particular signal\n\
7771 Raised exceptions may be caught:\n\
7772 \tcatch throw - all exceptions, when thrown\n\
7773 \tcatch throw <exceptname> - a particular exception, when thrown\n\
7774 \tcatch catch - all exceptions, when caught\n\
7775 \tcatch catch <exceptname> - a particular exception, when caught\n\
7776 Thread or process events may be caught:\n\
7777 \tcatch thread_start - any threads, just after creation\n\
7778 \tcatch thread_exit - any threads, just before expiration\n\
7779 \tcatch thread_join - any threads, just after joins\n\
7780 Process events may be caught:\n\
7781 \tcatch start - any processes, just after creation\n\
7782 \tcatch exit - any processes, just before expiration\n\
7783 \tcatch fork - calls to fork()\n\
7784 \tcatch vfork - calls to vfork()\n\
7785 \tcatch exec - calls to exec()\n\
7786 Dynamically-linked library events may be caught:\n\
7787 \tcatch load - loads of any library\n\
7788 \tcatch load <libname> - loads of a particular library\n\
7789 \tcatch unload - unloads of any library\n\
7790 \tcatch unload <libname> - unloads of a particular library\n\
7791 The act of your program's execution stopping may also be caught:\n\
7793 C++ exceptions may be caught:\n\
7794 \tcatch throw - all exceptions, when thrown\n\
7795 \tcatch catch - all exceptions, when caught\n\
7797 Do \"help set follow-fork-mode\" for info on debugging your program\n\
7798 after a fork or vfork is caught.\n\n\
7799 Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
7801 add_com ("tcatch", class_breakpoint
, tcatch_command
,
7802 "Set temporary catchpoints to catch events.\n\
7803 Args like \"catch\" command.\n\
7804 Like \"catch\" except the catchpoint is only temporary,\n\
7805 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
7806 by using \"enable delete\" on the catchpoint number.");
7808 add_com ("watch", class_breakpoint
, watch_command
,
7809 "Set a watchpoint for an expression.\n\
7810 A watchpoint stops execution of your program whenever the value of\n\
7811 an expression changes.");
7813 add_com ("rwatch", class_breakpoint
, rwatch_command
,
7814 "Set a read watchpoint for an expression.\n\
7815 A watchpoint stops execution of your program whenever the value of\n\
7816 an expression is read.");
7818 add_com ("awatch", class_breakpoint
, awatch_command
,
7819 "Set a watchpoint for an expression.\n\
7820 A watchpoint stops execution of your program whenever the value of\n\
7821 an expression is either read or written.");
7823 add_info ("watchpoints", breakpoints_info
,
7824 "Synonym for ``info breakpoints''.");
7827 c
= add_set_cmd ("can-use-hw-watchpoints", class_support
, var_zinteger
,
7828 (char *) &can_use_hw_watchpoints
,
7829 "Set debugger's willingness to use watchpoint hardware.\n\
7830 If zero, gdb will not use hardware for new watchpoints, even if\n\
7831 such is available. (However, any hardware watchpoints that were\n\
7832 created before setting this to nonzero, will continue to use watchpoint\n\
7835 add_show_from_set (c
, &showlist
);
7837 can_use_hw_watchpoints
= 1;