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"
43 #include "completer.h"
48 #include "gdb-events.h"
50 /* Prototypes for local functions. */
52 static void until_break_command_continuation (struct continuation_arg
*arg
);
54 static void catch_command_1 (char *, int, int);
56 static void enable_delete_command (char *, int);
58 static void enable_delete_breakpoint (struct breakpoint
*);
60 static void enable_once_command (char *, int);
62 static void enable_once_breakpoint (struct breakpoint
*);
64 static void disable_command (char *, int);
66 static void enable_command (char *, int);
68 static void map_breakpoint_numbers (char *, void (*)(struct breakpoint
*));
70 static void ignore_command (char *, int);
72 static int breakpoint_re_set_one (PTR
);
74 static void clear_command (char *, int);
76 static void catch_command (char *, int);
78 static void handle_gnu_4_16_catch_command (char *, int, int);
80 static struct symtabs_and_lines
get_catch_sals (int);
82 static void watch_command (char *, int);
84 static int can_use_hardware_watchpoint (struct value
*);
86 static void break_at_finish_command (char *, int);
87 static void break_at_finish_at_depth_command (char *, int);
89 static void tbreak_at_finish_command (char *, int);
91 static void break_command_1 (char *, int, int);
93 static void mention (struct breakpoint
*);
95 struct breakpoint
*set_raw_breakpoint (struct symtab_and_line
, enum bptype
);
97 static void check_duplicates (struct breakpoint
*);
99 static void describe_other_breakpoints (CORE_ADDR
, asection
*);
101 static void breakpoints_info (char *, int);
103 static void breakpoint_1 (int, int);
105 static bpstat
bpstat_alloc (struct breakpoint
*, bpstat
);
107 static int breakpoint_cond_eval (PTR
);
109 static void cleanup_executing_breakpoints (PTR
);
111 static void commands_command (char *, int);
113 static void condition_command (char *, int);
115 static int get_number_trailer (char **, int);
117 void set_breakpoint_count (int);
120 static struct breakpoint
*create_temp_exception_breakpoint (CORE_ADDR
);
130 static int remove_breakpoint (struct breakpoint
*, insertion_state_t
);
132 static enum print_stop_action
print_it_typical (bpstat
);
134 static enum print_stop_action
print_bp_stop_message (bpstat bs
);
138 enum exception_event_kind kind
;
141 args_for_catchpoint_enable
;
143 static int watchpoint_check (PTR
);
145 static int cover_target_enable_exception_callback (PTR
);
147 static void maintenance_info_breakpoints (char *, int);
149 #ifdef GET_LONGJMP_TARGET
150 static void create_longjmp_breakpoint (char *);
153 static int hw_breakpoint_used_count (void);
155 static int hw_watchpoint_used_count (enum bptype
, int *);
157 static void hbreak_command (char *, int);
159 static void thbreak_command (char *, int);
161 static void watch_command_1 (char *, int, int);
163 static void rwatch_command (char *, int);
165 static void awatch_command (char *, int);
167 static void do_enable_breakpoint (struct breakpoint
*, enum bpdisp
);
169 static void solib_load_unload_1 (char *hookname
,
172 char *cond_string
, enum bptype bp_kind
);
174 static void create_fork_vfork_event_catchpoint (int tempflag
,
176 enum bptype bp_kind
);
178 static void break_at_finish_at_depth_command_1 (char *arg
,
179 int flag
, int from_tty
);
181 static void break_at_finish_command_1 (char *arg
, int flag
, int from_tty
);
183 static void stop_command (char *arg
, int from_tty
);
185 static void stopin_command (char *arg
, int from_tty
);
187 static void stopat_command (char *arg
, int from_tty
);
189 static char *ep_find_event_name_end (char *arg
);
191 static char *ep_parse_optional_if_clause (char **arg
);
193 static char *ep_parse_optional_filename (char **arg
);
195 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
196 static void catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
);
199 static void create_exception_catchpoint (int tempflag
, char *cond_string
,
200 enum exception_event_kind ex_event
,
201 struct symtab_and_line
*sal
);
203 static void catch_exception_command_1 (enum exception_event_kind ex_event
,
204 char *arg
, int tempflag
, int from_tty
);
206 static void tcatch_command (char *arg
, int from_tty
);
208 static void ep_skip_leading_whitespace (char **s
);
210 /* Prototypes for exported functions. */
212 /* If FALSE, gdb will not use hardware support for watchpoints, even
213 if such is available. */
214 static int can_use_hw_watchpoints
;
216 void _initialize_breakpoint (void);
218 extern int addressprint
; /* Print machine addresses? */
220 static int internal_breakpoint_number
= -1;
222 /* Are we executing breakpoint commands? */
223 static int executing_breakpoint_commands
;
225 /* Walk the following statement or block through all breakpoints.
226 ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current
229 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
231 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
232 for (B = breakpoint_chain; \
233 B ? (TMP=B->next, 1): 0; \
236 /* True if SHIFT_INST_REGS defined, false otherwise. */
238 int must_shift_inst_regs
=
239 #if defined(SHIFT_INST_REGS)
246 /* True if breakpoint hit counts should be displayed in breakpoint info. */
248 int show_breakpoint_hit_counts
= 1;
250 /* Chain of all breakpoints defined. */
252 struct breakpoint
*breakpoint_chain
;
254 /* Number of last breakpoint made. */
256 int breakpoint_count
;
258 /* Pointer to current exception event record */
259 static struct exception_event_record
*current_exception_event
;
261 /* Indicator of whether exception catchpoints should be nuked
262 between runs of a program */
263 int exception_catchpoints_are_fragile
= 0;
265 /* Indicator of when exception catchpoints set-up should be
266 reinitialized -- e.g. when program is re-run */
267 int exception_support_initialized
= 0;
269 /* This function returns a pointer to the string representation of the
270 pathname of the dynamically-linked library that has just been
273 This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE,
274 or undefined results are guaranteed.
276 This string's contents are only valid immediately after the
277 inferior has stopped in the dynamic linker hook, and becomes
278 invalid as soon as the inferior is continued. Clients should make
279 a copy of this string if they wish to continue the inferior and
280 then access the string. */
282 #ifndef SOLIB_LOADED_LIBRARY_PATHNAME
283 #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) ""
286 /* This function returns a pointer to the string representation of the
287 pathname of the dynamically-linked library that has just been
290 This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is
291 TRUE, or undefined results are guaranteed.
293 This string's contents are only valid immediately after the
294 inferior has stopped in the dynamic linker hook, and becomes
295 invalid as soon as the inferior is continued. Clients should make
296 a copy of this string if they wish to continue the inferior and
297 then access the string. */
299 #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME
300 #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) ""
303 /* This function is called by the "catch load" command. It allows the
304 debugger to be notified by the dynamic linker when a specified
305 library file (or any library file, if filename is NULL) is loaded. */
307 #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK
308 #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \
309 error ("catch of library loads not yet implemented on this platform")
312 /* This function is called by the "catch unload" command. It allows
313 the debugger to be notified by the dynamic linker when a specified
314 library file (or any library file, if filename is NULL) is
317 #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK
318 #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \
319 error ("catch of library unloads not yet implemented on this platform")
322 /* Set breakpoint count to NUM. */
325 set_breakpoint_count (int num
)
327 breakpoint_count
= num
;
328 set_internalvar (lookup_internalvar ("bpnum"),
329 value_from_longest (builtin_type_int
, (LONGEST
) num
));
332 /* Used in run_command to zero the hit count when a new run starts. */
335 clear_breakpoint_hit_counts (void)
337 struct breakpoint
*b
;
343 /* Default address, symtab and line to put a breakpoint at
344 for "break" command with no arg.
345 if default_breakpoint_valid is zero, the other three are
346 not valid, and "break" with no arg is an error.
348 This set by print_stack_frame, which calls set_default_breakpoint. */
350 int default_breakpoint_valid
;
351 CORE_ADDR default_breakpoint_address
;
352 struct symtab
*default_breakpoint_symtab
;
353 int default_breakpoint_line
;
355 /* *PP is a string denoting a breakpoint. Get the number of the breakpoint.
356 Advance *PP after the string and any trailing whitespace.
358 Currently the string can either be a number or "$" followed by the name
359 of a convenience variable. Making it an expression wouldn't work well
360 for map_breakpoint_numbers (e.g. "4 + 5 + 6").
362 TRAILER is a character which can be found after the number; most
363 commonly this is `-'. If you don't want a trailer, use \0. */
365 get_number_trailer (char **pp
, int trailer
)
367 int retval
= 0; /* default */
371 /* Empty line means refer to the last breakpoint. */
372 return breakpoint_count
;
375 /* Make a copy of the name, so we can null-terminate it
376 to pass to lookup_internalvar(). */
381 while (isalnum (*p
) || *p
== '_')
383 varname
= (char *) alloca (p
- start
+ 1);
384 strncpy (varname
, start
, p
- start
);
385 varname
[p
- start
] = '\0';
386 val
= value_of_internalvar (lookup_internalvar (varname
));
387 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_INT
)
388 retval
= (int) value_as_long (val
);
391 printf_filtered ("Convenience variable must have integer value.\n");
399 while (*p
>= '0' && *p
<= '9')
402 /* There is no number here. (e.g. "cond a == b"). */
404 /* Skip non-numeric token */
405 while (*p
&& !isspace((int) *p
))
407 /* Return zero, which caller must interpret as error. */
413 if (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
415 /* Trailing junk: return 0 and let caller print error msg. */
416 while (!(isspace (*p
) || *p
== '\0' || *p
== trailer
))
427 /* Like get_number_trailer, but don't allow a trailer. */
429 get_number (char **pp
)
431 return get_number_trailer (pp
, '\0');
434 /* Parse a number or a range.
435 * A number will be of the form handled by get_number.
436 * A range will be of the form <number1> - <number2>, and
437 * will represent all the integers between number1 and number2,
440 * While processing a range, this fuction is called iteratively;
441 * At each call it will return the next value in the range.
443 * At the beginning of parsing a range, the char pointer PP will
444 * be advanced past <number1> and left pointing at the '-' token.
445 * Subsequent calls will not advance the pointer until the range
446 * is completed. The call that completes the range will advance
447 * pointer PP past <number2>.
451 get_number_or_range (char **pp
)
453 static int last_retval
, end_value
;
454 static char *end_ptr
;
455 static int in_range
= 0;
459 /* Default case: pp is pointing either to a solo number,
460 or to the first number of a range. */
461 last_retval
= get_number_trailer (pp
, '-');
466 /* This is the start of a range (<number1> - <number2>).
467 Skip the '-', parse and remember the second number,
468 and also remember the end of the final token. */
472 while (isspace ((int) *end_ptr
))
473 end_ptr
++; /* skip white space */
474 end_value
= get_number (temp
);
475 if (end_value
< last_retval
)
477 error ("inverted range");
479 else if (end_value
== last_retval
)
481 /* degenerate range (number1 == number2). Advance the
482 token pointer so that the range will be treated as a
491 error ("negative value");
494 /* pp points to the '-' that betokens a range. All
495 number-parsing has already been done. Return the next
496 integer value (one greater than the saved previous value).
497 Do not advance the token pointer 'pp' until the end of range
500 if (++last_retval
== end_value
)
502 /* End of range reached; advance token pointer. */
512 /* condition N EXP -- set break condition of breakpoint N to EXP. */
515 condition_command (char *arg
, int from_tty
)
517 register struct breakpoint
*b
;
522 error_no_arg ("breakpoint number");
525 bnum
= get_number (&p
);
527 error ("Bad breakpoint argument: '%s'", arg
);
530 if (b
->number
== bnum
)
537 if (b
->cond_string
!= NULL
)
538 xfree (b
->cond_string
);
543 b
->cond_string
= NULL
;
545 printf_filtered ("Breakpoint %d now unconditional.\n", bnum
);
550 /* I don't know if it matters whether this is the string the user
551 typed in or the decompiled expression. */
552 b
->cond_string
= savestring (arg
, strlen (arg
));
553 b
->cond
= parse_exp_1 (&arg
, block_for_pc (b
->address
), 0);
555 error ("Junk at end of expression");
557 breakpoints_changed ();
561 error ("No breakpoint number %d.", bnum
);
566 commands_command (char *arg
, int from_tty
)
568 register struct breakpoint
*b
;
571 struct command_line
*l
;
573 /* If we allowed this, we would have problems with when to
574 free the storage, if we change the commands currently
577 if (executing_breakpoint_commands
)
578 error ("Can't use the \"commands\" command among a breakpoint's commands.");
581 bnum
= get_number (&p
);
584 error ("Unexpected extra arguments following breakpoint number.");
587 if (b
->number
== bnum
)
591 "Type commands for when breakpoint %d is hit, one per line.",
593 l
= read_command_lines (tmpbuf
, from_tty
);
594 free_command_lines (&b
->commands
);
596 breakpoints_changed ();
599 error ("No breakpoint number %d.", bnum
);
602 /* Like target_read_memory() but if breakpoints are inserted, return
603 the shadow contents instead of the breakpoints themselves.
605 Read "memory data" from whatever target or inferior we have.
606 Returns zero if successful, errno value if not. EIO is used
607 for address out of bounds. If breakpoints are inserted, returns
608 shadow contents, not the breakpoints themselves. From breakpoint.c. */
611 read_memory_nobpt (CORE_ADDR memaddr
, char *myaddr
, unsigned len
)
614 struct breakpoint
*b
;
615 CORE_ADDR bp_addr
= 0;
618 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
619 /* No breakpoints on this machine. */
620 return target_read_memory (memaddr
, myaddr
, len
);
624 if (b
->type
== bp_none
)
625 warning ("reading through apparently deleted breakpoint #%d?",
628 /* memory breakpoint? */
629 if (b
->type
== bp_watchpoint
630 || b
->type
== bp_hardware_watchpoint
631 || b
->type
== bp_read_watchpoint
632 || b
->type
== bp_access_watchpoint
)
637 /* Addresses and length of the part of the breakpoint that
639 /* XXXX The m68k, sh and h8300 have different local and remote
640 breakpoint values. BREAKPOINT_FROM_PC still manages to
641 correctly determine the breakpoints memory address and size
642 for these targets. */
643 bp_addr
= b
->address
;
645 if (BREAKPOINT_FROM_PC (&bp_addr
, &bp_size
) == NULL
)
650 if (bp_addr
+ bp_size
<= memaddr
)
651 /* The breakpoint is entirely before the chunk of memory we
654 if (bp_addr
>= memaddr
+ len
)
655 /* The breakpoint is entirely after the chunk of memory we are
658 /* Copy the breakpoint from the shadow contents, and recurse for
659 the things before and after. */
661 /* Offset within shadow_contents. */
664 if (bp_addr
< memaddr
)
666 /* Only copy the second part of the breakpoint. */
667 bp_size
-= memaddr
- bp_addr
;
668 bptoffset
= memaddr
- bp_addr
;
672 if (bp_addr
+ bp_size
> memaddr
+ len
)
674 /* Only copy the first part of the breakpoint. */
675 bp_size
-= (bp_addr
+ bp_size
) - (memaddr
+ len
);
678 memcpy (myaddr
+ bp_addr
- memaddr
,
679 b
->shadow_contents
+ bptoffset
, bp_size
);
681 if (bp_addr
> memaddr
)
683 /* Copy the section of memory before the breakpoint. */
684 status
= read_memory_nobpt (memaddr
, myaddr
, bp_addr
- memaddr
);
689 if (bp_addr
+ bp_size
< memaddr
+ len
)
691 /* Copy the section of memory after the breakpoint. */
692 status
= read_memory_nobpt (bp_addr
+ bp_size
,
693 myaddr
+ bp_addr
+ bp_size
- memaddr
,
694 memaddr
+ len
- (bp_addr
+ bp_size
));
701 /* Nothing overlaps. Just call read_memory_noerr. */
702 return target_read_memory (memaddr
, myaddr
, len
);
706 /* insert_breakpoints is used when starting or continuing the program.
707 remove_breakpoints is used when the program stops.
708 Both return zero if successful,
709 or an `errno' value if could not write the inferior. */
712 insert_breakpoints (void)
714 register struct breakpoint
*b
, *temp
;
715 int return_val
= 0; /* return success code. */
717 int disabled_breaks
= 0;
719 static char message1
[] = "Error inserting catchpoint %d:\n";
720 static char message
[sizeof (message1
) + 30];
723 ALL_BREAKPOINTS_SAFE (b
, temp
)
725 if (b
->enable
== permanent
)
726 /* Permanent breakpoints cannot be inserted or removed. */
728 else if (b
->type
!= bp_watchpoint
729 && b
->type
!= bp_hardware_watchpoint
730 && b
->type
!= bp_read_watchpoint
731 && b
->type
!= bp_access_watchpoint
732 && b
->type
!= bp_catch_fork
733 && b
->type
!= bp_catch_vfork
734 && b
->type
!= bp_catch_exec
735 && b
->type
!= bp_catch_throw
736 && b
->type
!= bp_catch_catch
737 && b
->enable
!= disabled
738 && b
->enable
!= shlib_disabled
739 && b
->enable
!= call_disabled
743 if (b
->type
== bp_hardware_breakpoint
)
744 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
747 /* Check to see if breakpoint is in an overlay section;
748 if so, we should set the breakpoint at the LMA address.
749 Only if the section is currently mapped should we ALSO
750 set a break at the VMA address. */
751 if (overlay_debugging
&& b
->section
&&
752 section_is_overlay (b
->section
))
756 addr
= overlay_unmapped_address (b
->address
, b
->section
);
757 val
= target_insert_breakpoint (addr
, b
->shadow_contents
);
758 /* This would be the time to check val, to see if the
759 breakpoint write to the load address succeeded.
760 However, this might be an ordinary occurrance, eg. if
761 the unmapped overlay is in ROM. */
762 val
= 0; /* in case unmapped address failed */
763 if (section_is_mapped (b
->section
))
764 val
= target_insert_breakpoint (b
->address
,
767 else /* ordinary (non-overlay) address */
768 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
772 /* Can't set the breakpoint. */
773 #if defined (DISABLE_UNSETTABLE_BREAK)
774 if (DISABLE_UNSETTABLE_BREAK (b
->address
))
776 /* See also: disable_breakpoints_in_shlibs. */
778 b
->enable
= shlib_disabled
;
779 if (!disabled_breaks
)
781 target_terminal_ours_for_output ();
782 warning ("Cannot insert breakpoint %d:", b
->number
);
783 warning ("Temporarily disabling shared library breakpoints:");
786 warning ("breakpoint #%d ", b
->number
);
791 target_terminal_ours_for_output ();
792 warning ("Cannot insert breakpoint %d:", b
->number
);
793 #ifdef ONE_PROCESS_WRITETEXT
794 warning ("The same program may be running in another process.");
796 memory_error (val
, b
->address
); /* which bombs us out */
803 return_val
= val
; /* remember failure */
805 else if (ep_is_exception_catchpoint (b
)
806 && b
->enable
!= disabled
807 && b
->enable
!= shlib_disabled
808 && b
->enable
!= call_disabled
813 /* If we get here, we must have a callback mechanism for exception
814 events -- with g++ style embedded label support, we insert
815 ordinary breakpoints and not catchpoints. */
816 /* Format possible error message */
817 sprintf (message
, message1
, b
->number
);
819 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
822 /* Couldn't set breakpoint for some reason */
823 target_terminal_ours_for_output ();
824 warning ("Cannot insert catchpoint %d; disabling it.",
826 b
->enable
= disabled
;
830 /* Bp set, now make sure callbacks are enabled */
832 args_for_catchpoint_enable args
;
833 args
.kind
= b
->type
== bp_catch_catch
?
834 EX_EVENT_CATCH
: EX_EVENT_THROW
;
836 val
= catch_errors (cover_target_enable_exception_callback
,
838 message
, RETURN_MASK_ALL
);
839 if (val
!= 0 && val
!= -1)
843 /* Check if something went wrong; val == 0 can be ignored */
846 /* something went wrong */
847 target_terminal_ours_for_output ();
848 warning ("Cannot insert catchpoint %d; disabling it.",
850 b
->enable
= disabled
;
855 return_val
= val
; /* remember failure */
858 else if ((b
->type
== bp_hardware_watchpoint
||
859 b
->type
== bp_read_watchpoint
||
860 b
->type
== bp_access_watchpoint
)
861 && b
->enable
== enabled
862 && b
->disposition
!= del_at_next_stop
866 struct frame_info
*saved_frame
;
867 int saved_level
, within_current_scope
;
868 value_ptr mark
= value_mark ();
871 /* Save the current frame and level so we can restore it after
872 evaluating the watchpoint expression on its own frame. */
873 saved_frame
= selected_frame
;
874 saved_level
= selected_frame_level
;
876 /* Determine if the watchpoint is within scope. */
877 if (b
->exp_valid_block
== NULL
)
878 within_current_scope
= 1;
881 struct frame_info
*fi
;
883 /* There might be no current frame at this moment if we are
884 resuming from a step over a breakpoint.
885 Set up current frame before trying to find the watchpoint
887 get_current_frame ();
888 fi
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
889 within_current_scope
= (fi
!= NULL
);
890 if (within_current_scope
)
891 select_frame (fi
, -1);
894 if (within_current_scope
)
896 /* Evaluate the expression and cut the chain of values
897 produced off from the value chain.
899 Make sure the value returned isn't lazy; we use
900 laziness to determine what memory GDB actually needed
901 in order to compute the value of the expression. */
902 v
= evaluate_expression (b
->exp
);
904 value_release_to_mark (mark
);
909 /* Look at each value on the value chain. */
910 for (; v
; v
= v
->next
)
912 /* If it's a memory location, and GDB actually needed
913 its contents to evaluate the expression, then we
915 if (VALUE_LVAL (v
) == lval_memory
918 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
920 /* We only watch structs and arrays if user asked
921 for it explicitly, never if they just happen to
922 appear in the middle of some value chain. */
923 if (v
== b
->val_chain
924 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
925 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
930 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
931 len
= TYPE_LENGTH (VALUE_TYPE (v
));
933 if (b
->type
== bp_read_watchpoint
)
935 else if (b
->type
== bp_access_watchpoint
)
938 val
= target_insert_watchpoint (addr
, len
, type
);
941 /* Don't exit the loop, try to insert
942 every value on the value chain. That's
943 because we will be removing all the
944 watches below, and removing a
945 watchpoint we didn't insert could have
953 /* Failure to insert a watchpoint on any memory value in the
954 value chain brings us here. */
957 remove_breakpoint (b
, mark_uninserted
);
958 warning ("Could not insert hardware watchpoint %d.",
965 printf_filtered ("Hardware watchpoint %d deleted ", b
->number
);
966 printf_filtered ("because the program has left the block \n");
967 printf_filtered ("in which its expression is valid.\n");
968 if (b
->related_breakpoint
)
969 b
->related_breakpoint
->disposition
= del_at_next_stop
;
970 b
->disposition
= del_at_next_stop
;
973 /* Restore the frame and level. */
974 if ((saved_frame
!= selected_frame
) ||
975 (saved_level
!= selected_frame_level
))
976 select_frame (saved_frame
, saved_level
);
979 return_val
= val
; /* remember failure */
981 else if ((b
->type
== bp_catch_fork
982 || b
->type
== bp_catch_vfork
983 || b
->type
== bp_catch_exec
)
984 && b
->enable
== enabled
992 val
= target_insert_fork_catchpoint (PIDGET (inferior_ptid
));
995 val
= target_insert_vfork_catchpoint (PIDGET (inferior_ptid
));
998 val
= target_insert_exec_catchpoint (PIDGET (inferior_ptid
));
1001 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1006 target_terminal_ours_for_output ();
1007 warning ("Cannot insert catchpoint %d.", b
->number
);
1013 return_val
= val
; /* remember failure */
1022 remove_breakpoints (void)
1024 register struct breakpoint
*b
;
1031 val
= remove_breakpoint (b
, mark_uninserted
);
1040 remove_hw_watchpoints (void)
1042 register struct breakpoint
*b
;
1048 && (b
->type
== bp_hardware_watchpoint
1049 || b
->type
== bp_read_watchpoint
1050 || b
->type
== bp_access_watchpoint
))
1052 val
= remove_breakpoint (b
, mark_uninserted
);
1061 reattach_breakpoints (int pid
)
1063 register struct breakpoint
*b
;
1065 struct cleanup
*old_chain
= save_inferior_ptid ();
1067 /* Set inferior_ptid; remove_breakpoint uses this global. */
1068 inferior_ptid
= pid_to_ptid (pid
);
1073 remove_breakpoint (b
, mark_inserted
);
1074 if (b
->type
== bp_hardware_breakpoint
)
1075 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
1077 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
1080 do_cleanups (old_chain
);
1085 do_cleanups (old_chain
);
1090 update_breakpoints_after_exec (void)
1092 struct breakpoint
*b
;
1093 struct breakpoint
*temp
;
1095 /* Doing this first prevents the badness of having delete_breakpoint()
1096 write a breakpoint's current "shadow contents" to lift the bp. That
1097 shadow is NOT valid after an exec()! */
1098 mark_breakpoints_out ();
1100 ALL_BREAKPOINTS_SAFE (b
, temp
)
1102 /* Solib breakpoints must be explicitly reset after an exec(). */
1103 if (b
->type
== bp_shlib_event
)
1105 delete_breakpoint (b
);
1109 /* Thread event breakpoints must be set anew after an exec(). */
1110 if (b
->type
== bp_thread_event
)
1112 delete_breakpoint (b
);
1116 /* Step-resume breakpoints are meaningless after an exec(). */
1117 if (b
->type
== bp_step_resume
)
1119 delete_breakpoint (b
);
1123 /* Ditto the sigtramp handler breakpoints. */
1124 if (b
->type
== bp_through_sigtramp
)
1126 delete_breakpoint (b
);
1130 /* Ditto the exception-handling catchpoints. */
1131 if ((b
->type
== bp_catch_catch
) || (b
->type
== bp_catch_throw
))
1133 delete_breakpoint (b
);
1137 /* Don't delete an exec catchpoint, because else the inferior
1138 won't stop when it ought!
1140 Similarly, we probably ought to keep vfork catchpoints, 'cause
1141 on this target, we may not be able to stop when the vfork is
1142 seen, but only when the subsequent exec is seen. (And because
1143 deleting fork catchpoints here but not vfork catchpoints will
1144 seem mysterious to users, keep those too.)
1146 ??rehrauer: Let's hope that merely clearing out this catchpoint's
1147 target address field, if any, is sufficient to have it be reset
1148 automagically. Certainly on HP-UX that's true.
1150 Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly
1151 valid code address on some platforms (like the mn10200 and
1152 mn10300 simulators). We shouldn't assign any special
1153 interpretation to a breakpoint with a zero address. And in
1154 fact, GDB doesn't --- I can't see what that comment above is
1155 talking about. As far as I can tell, setting the address of a
1156 bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero
1157 is meaningless, since those are implemented with HP-UX kernel
1158 hackery, not by storing breakpoint instructions somewhere. */
1159 if ((b
->type
== bp_catch_exec
) ||
1160 (b
->type
== bp_catch_vfork
) ||
1161 (b
->type
== bp_catch_fork
))
1163 b
->address
= (CORE_ADDR
) NULL
;
1167 /* bp_finish is a special case. The only way we ought to be able
1168 to see one of these when an exec() has happened, is if the user
1169 caught a vfork, and then said "finish". Ordinarily a finish just
1170 carries them to the call-site of the current callee, by setting
1171 a temporary bp there and resuming. But in this case, the finish
1172 will carry them entirely through the vfork & exec.
1174 We don't want to allow a bp_finish to remain inserted now. But
1175 we can't safely delete it, 'cause finish_command has a handle to
1176 the bp on a bpstat, and will later want to delete it. There's a
1177 chance (and I've seen it happen) that if we delete the bp_finish
1178 here, that its storage will get reused by the time finish_command
1179 gets 'round to deleting the "use to be a bp_finish" breakpoint.
1180 We really must allow finish_command to delete a bp_finish.
1182 In the absense of a general solution for the "how do we know
1183 it's safe to delete something others may have handles to?"
1184 problem, what we'll do here is just uninsert the bp_finish, and
1185 let finish_command delete it.
1187 (We know the bp_finish is "doomed" in the sense that it's
1188 momentary, and will be deleted as soon as finish_command sees
1189 the inferior stopped. So it doesn't matter that the bp's
1190 address is probably bogus in the new a.out, unlike e.g., the
1191 solib breakpoints.) */
1193 if (b
->type
== bp_finish
)
1198 /* Without a symbolic address, we have little hope of the
1199 pre-exec() address meaning the same thing in the post-exec()
1201 if (b
->addr_string
== NULL
)
1203 delete_breakpoint (b
);
1207 /* If this breakpoint has survived the above battery of checks, then
1208 it must have a symbolic address. Be sure that it gets reevaluated
1209 to a target address, rather than reusing the old evaluation.
1211 Jim Blandy <jimb@redhat.com>: As explained above in the comment
1212 for bp_catch_exec and friends, I'm pretty sure this is entirely
1213 unnecessary. A call to breakpoint_re_set_one always recomputes
1214 the breakpoint's address from scratch, or deletes it if it can't.
1215 So I think this assignment could be deleted without effect. */
1216 b
->address
= (CORE_ADDR
) NULL
;
1221 detach_breakpoints (int pid
)
1223 register struct breakpoint
*b
;
1225 struct cleanup
*old_chain
= save_inferior_ptid ();
1227 if (pid
== PIDGET (inferior_ptid
))
1228 error ("Cannot detach breakpoints of inferior_ptid");
1230 /* Set inferior_ptid; remove_breakpoint uses this global. */
1231 inferior_ptid
= pid_to_ptid (pid
);
1236 val
= remove_breakpoint (b
, mark_inserted
);
1239 do_cleanups (old_chain
);
1244 do_cleanups (old_chain
);
1249 remove_breakpoint (struct breakpoint
*b
, insertion_state_t is
)
1253 if (b
->enable
== permanent
)
1254 /* Permanent breakpoints cannot be inserted or removed. */
1257 if (b
->type
== bp_none
)
1258 warning ("attempted to remove apparently deleted breakpoint #%d?",
1261 if (b
->type
!= bp_watchpoint
1262 && b
->type
!= bp_hardware_watchpoint
1263 && b
->type
!= bp_read_watchpoint
1264 && b
->type
!= bp_access_watchpoint
1265 && b
->type
!= bp_catch_fork
1266 && b
->type
!= bp_catch_vfork
1267 && b
->type
!= bp_catch_exec
1268 && b
->type
!= bp_catch_catch
1269 && b
->type
!= bp_catch_throw
)
1271 if (b
->type
== bp_hardware_breakpoint
)
1272 val
= target_remove_hw_breakpoint (b
->address
, b
->shadow_contents
);
1275 /* Check to see if breakpoint is in an overlay section;
1276 if so, we should remove the breakpoint at the LMA address.
1277 If that is not equal to the raw address, then we should
1278 presumably remove the breakpoint there as well. */
1279 if (overlay_debugging
&& b
->section
&&
1280 section_is_overlay (b
->section
))
1284 addr
= overlay_unmapped_address (b
->address
, b
->section
);
1285 val
= target_remove_breakpoint (addr
, b
->shadow_contents
);
1286 /* This would be the time to check val, to see if the
1287 shadow breakpoint write to the load address succeeded.
1288 However, this might be an ordinary occurrance, eg. if
1289 the unmapped overlay is in ROM. */
1290 val
= 0; /* in case unmapped address failed */
1291 if (section_is_mapped (b
->section
))
1292 val
= target_remove_breakpoint (b
->address
,
1293 b
->shadow_contents
);
1295 else /* ordinary (non-overlay) address */
1296 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1300 b
->inserted
= (is
== mark_inserted
);
1302 else if ((b
->type
== bp_hardware_watchpoint
||
1303 b
->type
== bp_read_watchpoint
||
1304 b
->type
== bp_access_watchpoint
)
1305 && b
->enable
== enabled
1310 b
->inserted
= (is
== mark_inserted
);
1311 /* Walk down the saved value chain. */
1312 for (v
= b
->val_chain
; v
; v
= v
->next
)
1314 /* For each memory reference remove the watchpoint
1316 if (VALUE_LVAL (v
) == lval_memory
1317 && ! VALUE_LAZY (v
))
1319 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
1321 if (v
== b
->val_chain
1322 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
1323 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
1328 addr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
1329 len
= TYPE_LENGTH (VALUE_TYPE (v
));
1331 if (b
->type
== bp_read_watchpoint
)
1333 else if (b
->type
== bp_access_watchpoint
)
1336 val
= target_remove_watchpoint (addr
, len
, type
);
1343 /* Failure to remove any of the hardware watchpoints comes here. */
1344 if ((is
== mark_uninserted
) && (b
->inserted
))
1345 warning ("Could not remove hardware watchpoint %d.",
1348 /* Free the saved value chain. We will construct a new one
1349 the next time the watchpoint is inserted. */
1350 for (v
= b
->val_chain
; v
; v
= n
)
1355 b
->val_chain
= NULL
;
1357 else if ((b
->type
== bp_catch_fork
||
1358 b
->type
== bp_catch_vfork
||
1359 b
->type
== bp_catch_exec
)
1360 && b
->enable
== enabled
1367 val
= target_remove_fork_catchpoint (PIDGET (inferior_ptid
));
1369 case bp_catch_vfork
:
1370 val
= target_remove_vfork_catchpoint (PIDGET (inferior_ptid
));
1373 val
= target_remove_exec_catchpoint (PIDGET (inferior_ptid
));
1376 warning ("Internal error, %s line %d.", __FILE__
, __LINE__
);
1381 b
->inserted
= (is
== mark_inserted
);
1383 else if ((b
->type
== bp_catch_catch
||
1384 b
->type
== bp_catch_throw
)
1385 && b
->enable
== enabled
1389 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1392 b
->inserted
= (is
== mark_inserted
);
1394 else if (ep_is_exception_catchpoint (b
)
1395 && b
->inserted
/* sometimes previous insert doesn't happen */
1396 && b
->enable
== enabled
1400 val
= target_remove_breakpoint (b
->address
, b
->shadow_contents
);
1404 b
->inserted
= (is
== mark_inserted
);
1410 /* Clear the "inserted" flag in all breakpoints. */
1413 mark_breakpoints_out (void)
1415 register struct breakpoint
*b
;
1421 /* Clear the "inserted" flag in all breakpoints and delete any
1422 breakpoints which should go away between runs of the program.
1424 Plus other such housekeeping that has to be done for breakpoints
1427 Note: this function gets called at the end of a run (by
1428 generic_mourn_inferior) and when a run begins (by
1429 init_wait_for_inferior). */
1434 breakpoint_init_inferior (enum inf_context context
)
1436 register struct breakpoint
*b
, *temp
;
1437 static int warning_needed
= 0;
1439 ALL_BREAKPOINTS_SAFE (b
, temp
)
1446 case bp_watchpoint_scope
:
1448 /* If the call dummy breakpoint is at the entry point it will
1449 cause problems when the inferior is rerun, so we better
1452 Also get rid of scope breakpoints. */
1453 delete_breakpoint (b
);
1457 case bp_hardware_watchpoint
:
1458 case bp_read_watchpoint
:
1459 case bp_access_watchpoint
:
1461 /* Likewise for watchpoints on local expressions. */
1462 if (b
->exp_valid_block
!= NULL
)
1463 delete_breakpoint (b
);
1466 /* Likewise for exception catchpoints in dynamic-linked
1467 executables where required */
1468 if (ep_is_exception_catchpoint (b
) &&
1469 exception_catchpoints_are_fragile
)
1472 delete_breakpoint (b
);
1478 if (exception_catchpoints_are_fragile
)
1479 exception_support_initialized
= 0;
1481 /* Don't issue the warning unless it's really needed... */
1482 if (warning_needed
&& (context
!= inf_exited
))
1484 warning ("Exception catchpoints from last run were deleted.");
1485 warning ("You must reinsert them explicitly.");
1490 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
1491 exists at PC. It returns ordinary_breakpoint_here if it's an
1492 ordinary breakpoint, or permanent_breakpoint_here if it's a
1493 permanent breakpoint.
1494 - When continuing from a location with an ordinary breakpoint, we
1495 actually single step once before calling insert_breakpoints.
1496 - When continuing from a localion with a permanent breakpoint, we
1497 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
1498 the target, to advance the PC past the breakpoint. */
1500 enum breakpoint_here
1501 breakpoint_here_p (CORE_ADDR pc
)
1503 register struct breakpoint
*b
;
1504 int any_breakpoint_here
= 0;
1507 if ((b
->enable
== enabled
1508 || b
->enable
== permanent
)
1509 && b
->address
== pc
) /* bp is enabled and matches pc */
1511 if (overlay_debugging
&&
1512 section_is_overlay (b
->section
) &&
1513 !section_is_mapped (b
->section
))
1514 continue; /* unmapped overlay -- can't be a match */
1515 else if (b
->enable
== permanent
)
1516 return permanent_breakpoint_here
;
1518 any_breakpoint_here
= 1;
1521 return any_breakpoint_here
? ordinary_breakpoint_here
: 0;
1525 /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(),
1526 but it only returns true if there is actually a breakpoint inserted
1530 breakpoint_inserted_here_p (CORE_ADDR pc
)
1532 register struct breakpoint
*b
;
1536 && b
->address
== pc
) /* bp is inserted and matches pc */
1538 if (overlay_debugging
&&
1539 section_is_overlay (b
->section
) &&
1540 !section_is_mapped (b
->section
))
1541 continue; /* unmapped overlay -- can't be a match */
1549 /* Return nonzero if FRAME is a dummy frame. We can't use
1550 PC_IN_CALL_DUMMY because figuring out the saved SP would take too
1551 much time, at least using get_saved_register on the 68k. This
1552 means that for this function to work right a port must use the
1553 bp_call_dummy breakpoint. */
1556 frame_in_dummy (struct frame_info
*frame
)
1558 struct breakpoint
*b
;
1563 if (USE_GENERIC_DUMMY_FRAMES
)
1564 return generic_pc_in_call_dummy (frame
->pc
, frame
->frame
, frame
->frame
);
1568 if (b
->type
== bp_call_dummy
1569 && b
->frame
== frame
->frame
1570 /* We need to check the PC as well as the frame on the sparc,
1571 for signals.exp in the testsuite. */
1574 - SIZEOF_CALL_DUMMY_WORDS
/ sizeof (LONGEST
) * REGISTER_SIZE
))
1575 && frame
->pc
<= b
->address
)
1581 /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at
1582 PC is valid for process/thread PID. */
1585 breakpoint_thread_match (CORE_ADDR pc
, ptid_t ptid
)
1587 struct breakpoint
*b
;
1590 thread
= pid_to_thread_id (ptid
);
1593 if (b
->enable
!= disabled
1594 && b
->enable
!= shlib_disabled
1595 && b
->enable
!= call_disabled
1597 && (b
->thread
== -1 || b
->thread
== thread
))
1599 if (overlay_debugging
&&
1600 section_is_overlay (b
->section
) &&
1601 !section_is_mapped (b
->section
))
1602 continue; /* unmapped overlay -- can't be a match */
1611 /* bpstat stuff. External routines' interfaces are documented
1615 ep_is_catchpoint (struct breakpoint
*ep
)
1618 (ep
->type
== bp_catch_load
)
1619 || (ep
->type
== bp_catch_unload
)
1620 || (ep
->type
== bp_catch_fork
)
1621 || (ep
->type
== bp_catch_vfork
)
1622 || (ep
->type
== bp_catch_exec
)
1623 || (ep
->type
== bp_catch_catch
)
1624 || (ep
->type
== bp_catch_throw
);
1626 /* ??rehrauer: Add more kinds here, as are implemented... */
1630 ep_is_shlib_catchpoint (struct breakpoint
*ep
)
1633 (ep
->type
== bp_catch_load
)
1634 || (ep
->type
== bp_catch_unload
);
1638 ep_is_exception_catchpoint (struct breakpoint
*ep
)
1641 (ep
->type
== bp_catch_catch
)
1642 || (ep
->type
== bp_catch_throw
);
1645 /* Clear a bpstat so that it says we are not at any breakpoint.
1646 Also free any storage that is part of a bpstat. */
1649 bpstat_clear (bpstat
*bsp
)
1660 if (p
->old_val
!= NULL
)
1661 value_free (p
->old_val
);
1668 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
1669 is part of the bpstat is copied as well. */
1672 bpstat_copy (bpstat bs
)
1676 bpstat retval
= NULL
;
1681 for (; bs
!= NULL
; bs
= bs
->next
)
1683 tmp
= (bpstat
) xmalloc (sizeof (*tmp
));
1684 memcpy (tmp
, bs
, sizeof (*tmp
));
1686 /* This is the first thing in the chain. */
1696 /* Find the bpstat associated with this breakpoint */
1699 bpstat_find_breakpoint (bpstat bsp
, struct breakpoint
*breakpoint
)
1704 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1706 if (bsp
->breakpoint_at
== breakpoint
)
1712 /* Find a step_resume breakpoint associated with this bpstat.
1713 (If there are multiple step_resume bp's on the list, this function
1714 will arbitrarily pick one.)
1716 It is an error to use this function if BPSTAT doesn't contain a
1717 step_resume breakpoint.
1719 See wait_for_inferior's use of this function. */
1721 bpstat_find_step_resume_breakpoint (bpstat bsp
)
1726 error ("Internal error (bpstat_find_step_resume_breakpoint)");
1728 current_thread
= pid_to_thread_id (inferior_ptid
);
1730 for (; bsp
!= NULL
; bsp
= bsp
->next
)
1732 if ((bsp
->breakpoint_at
!= NULL
) &&
1733 (bsp
->breakpoint_at
->type
== bp_step_resume
) &&
1734 (bsp
->breakpoint_at
->thread
== current_thread
||
1735 bsp
->breakpoint_at
->thread
== -1))
1736 return bsp
->breakpoint_at
;
1739 error ("Internal error (no step_resume breakpoint found)");
1743 /* Return the breakpoint number of the first breakpoint we are stopped
1744 at. *BSP upon return is a bpstat which points to the remaining
1745 breakpoints stopped at (but which is not guaranteed to be good for
1746 anything but further calls to bpstat_num).
1747 Return 0 if passed a bpstat which does not indicate any breakpoints. */
1750 bpstat_num (bpstat
*bsp
)
1752 struct breakpoint
*b
;
1755 return 0; /* No more breakpoint values */
1758 b
= (*bsp
)->breakpoint_at
;
1759 *bsp
= (*bsp
)->next
;
1761 return -1; /* breakpoint that's been deleted since */
1763 return b
->number
; /* We have its number */
1767 /* Modify BS so that the actions will not be performed. */
1770 bpstat_clear_actions (bpstat bs
)
1772 for (; bs
!= NULL
; bs
= bs
->next
)
1774 bs
->commands
= NULL
;
1775 if (bs
->old_val
!= NULL
)
1777 value_free (bs
->old_val
);
1783 /* Stub for cleaning up our state if we error-out of a breakpoint command */
1786 cleanup_executing_breakpoints (PTR ignore
)
1788 executing_breakpoint_commands
= 0;
1791 /* Execute all the commands associated with all the breakpoints at this
1792 location. Any of these commands could cause the process to proceed
1793 beyond this point, etc. We look out for such changes by checking
1794 the global "breakpoint_proceeded" after each command. */
1797 bpstat_do_actions (bpstat
*bsp
)
1800 struct cleanup
*old_chain
;
1801 struct command_line
*cmd
;
1803 /* Avoid endless recursion if a `source' command is contained
1805 if (executing_breakpoint_commands
)
1808 executing_breakpoint_commands
= 1;
1809 old_chain
= make_cleanup (cleanup_executing_breakpoints
, 0);
1812 /* Note that (as of this writing), our callers all appear to
1813 be passing us the address of global stop_bpstat. And, if
1814 our calls to execute_control_command cause the inferior to
1815 proceed, that global (and hence, *bsp) will change.
1817 We must be careful to not touch *bsp unless the inferior
1818 has not proceeded. */
1820 /* This pointer will iterate over the list of bpstat's. */
1823 breakpoint_proceeded
= 0;
1824 for (; bs
!= NULL
; bs
= bs
->next
)
1829 execute_control_command (cmd
);
1831 if (breakpoint_proceeded
)
1836 if (breakpoint_proceeded
)
1837 /* The inferior is proceeded by the command; bomb out now.
1838 The bpstat chain has been blown away by wait_for_inferior.
1839 But since execution has stopped again, there is a new bpstat
1840 to look at, so start over. */
1843 bs
->commands
= NULL
;
1846 executing_breakpoint_commands
= 0;
1847 discard_cleanups (old_chain
);
1850 /* This is the normal print function for a bpstat. In the future,
1851 much of this logic could (should?) be moved to bpstat_stop_status,
1852 by having it set different print_it values.
1854 Current scheme: When we stop, bpstat_print() is called. It loops
1855 through the bpstat list of things causing this stop, calling the
1856 print_bp_stop_message function on each one. The behavior of the
1857 print_bp_stop_message function depends on the print_it field of
1858 bpstat. If such field so indicates, call this function here.
1860 Return values from this routine (ultimately used by bpstat_print()
1861 and normal_stop() to decide what to do):
1862 PRINT_NOTHING: Means we already printed all we needed to print,
1863 don't print anything else.
1864 PRINT_SRC_ONLY: Means we printed something, and we do *not* desire
1865 that something to be followed by a location.
1866 PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire
1867 that something to be followed by a location.
1868 PRINT_UNKNOWN: Means we printed nothing or we need to do some more
1871 static enum print_stop_action
1872 print_it_typical (bpstat bs
)
1875 struct cleanup
*old_chain
;
1876 struct ui_stream
*stb
;
1877 stb
= ui_out_stream_new (uiout
);
1878 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1880 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
1881 which has since been deleted. */
1882 if (bs
->breakpoint_at
== NULL
)
1883 return PRINT_UNKNOWN
;
1885 switch (bs
->breakpoint_at
->type
)
1888 case bp_hardware_breakpoint
:
1890 annotate_breakpoint (bs
->breakpoint_at
->number
);
1891 ui_out_text (uiout
, "\nBreakpoint ");
1892 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
1893 ui_out_field_string (uiout
, "reason", "breakpoint-hit");
1894 ui_out_field_int (uiout
, "bkptno", bs
->breakpoint_at
->number
);
1895 ui_out_text (uiout
, ", ");
1896 return PRINT_SRC_AND_LOC
;
1898 /* I think the user probably only wants to see one breakpoint
1899 number, not all of them. */
1900 annotate_breakpoint (bs
->breakpoint_at
->number
);
1901 printf_filtered ("\nBreakpoint %d, ", bs
->breakpoint_at
->number
);
1902 return PRINT_SRC_AND_LOC
;
1906 case bp_shlib_event
:
1907 /* Did we stop because the user set the stop_on_solib_events
1908 variable? (If so, we report this as a generic, "Stopped due
1909 to shlib event" message.) */
1910 printf_filtered ("Stopped due to shared library event\n");
1911 return PRINT_NOTHING
;
1914 case bp_thread_event
:
1915 /* Not sure how we will get here.
1916 GDB should not stop for these breakpoints. */
1917 printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n");
1918 return PRINT_NOTHING
;
1922 annotate_catchpoint (bs
->breakpoint_at
->number
);
1923 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1924 printf_filtered ("loaded");
1925 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1926 return PRINT_SRC_AND_LOC
;
1929 case bp_catch_unload
:
1930 annotate_catchpoint (bs
->breakpoint_at
->number
);
1931 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1932 printf_filtered ("unloaded");
1933 printf_filtered (" %s), ", bs
->breakpoint_at
->triggered_dll_pathname
);
1934 return PRINT_SRC_AND_LOC
;
1938 annotate_catchpoint (bs
->breakpoint_at
->number
);
1939 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1940 printf_filtered ("forked");
1941 printf_filtered (" process %d), ",
1942 bs
->breakpoint_at
->forked_inferior_pid
);
1943 return PRINT_SRC_AND_LOC
;
1946 case bp_catch_vfork
:
1947 annotate_catchpoint (bs
->breakpoint_at
->number
);
1948 printf_filtered ("\nCatchpoint %d (", bs
->breakpoint_at
->number
);
1949 printf_filtered ("vforked");
1950 printf_filtered (" process %d), ",
1951 bs
->breakpoint_at
->forked_inferior_pid
);
1952 return PRINT_SRC_AND_LOC
;
1956 annotate_catchpoint (bs
->breakpoint_at
->number
);
1957 printf_filtered ("\nCatchpoint %d (exec'd %s), ",
1958 bs
->breakpoint_at
->number
,
1959 bs
->breakpoint_at
->exec_pathname
);
1960 return PRINT_SRC_AND_LOC
;
1963 case bp_catch_catch
:
1964 if (current_exception_event
&&
1965 (CURRENT_EXCEPTION_KIND
== EX_EVENT_CATCH
))
1967 annotate_catchpoint (bs
->breakpoint_at
->number
);
1968 printf_filtered ("\nCatchpoint %d (exception caught), ",
1969 bs
->breakpoint_at
->number
);
1970 printf_filtered ("throw location ");
1971 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
1972 printf_filtered ("%s:%d",
1973 CURRENT_EXCEPTION_THROW_FILE
,
1974 CURRENT_EXCEPTION_THROW_LINE
);
1976 printf_filtered ("unknown");
1978 printf_filtered (", catch location ");
1979 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
1980 printf_filtered ("%s:%d",
1981 CURRENT_EXCEPTION_CATCH_FILE
,
1982 CURRENT_EXCEPTION_CATCH_LINE
);
1984 printf_filtered ("unknown");
1986 printf_filtered ("\n");
1987 /* don't bother to print location frame info */
1988 return PRINT_SRC_ONLY
;
1992 /* really throw, some other bpstat will handle it */
1993 return PRINT_UNKNOWN
;
1997 case bp_catch_throw
:
1998 if (current_exception_event
&&
1999 (CURRENT_EXCEPTION_KIND
== EX_EVENT_THROW
))
2001 annotate_catchpoint (bs
->breakpoint_at
->number
);
2002 printf_filtered ("\nCatchpoint %d (exception thrown), ",
2003 bs
->breakpoint_at
->number
);
2004 printf_filtered ("throw location ");
2005 if (CURRENT_EXCEPTION_THROW_PC
&& CURRENT_EXCEPTION_THROW_LINE
)
2006 printf_filtered ("%s:%d",
2007 CURRENT_EXCEPTION_THROW_FILE
,
2008 CURRENT_EXCEPTION_THROW_LINE
);
2010 printf_filtered ("unknown");
2012 printf_filtered (", catch location ");
2013 if (CURRENT_EXCEPTION_CATCH_PC
&& CURRENT_EXCEPTION_CATCH_LINE
)
2014 printf_filtered ("%s:%d",
2015 CURRENT_EXCEPTION_CATCH_FILE
,
2016 CURRENT_EXCEPTION_CATCH_LINE
);
2018 printf_filtered ("unknown");
2020 printf_filtered ("\n");
2021 /* don't bother to print location frame info */
2022 return PRINT_SRC_ONLY
;
2026 /* really catch, some other bpstat will handle it */
2027 return PRINT_UNKNOWN
;
2032 case bp_hardware_watchpoint
:
2033 if (bs
->old_val
!= NULL
)
2035 annotate_watchpoint (bs
->breakpoint_at
->number
);
2037 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2038 ui_out_field_string (uiout
, "reason", "watchpoint-trigger");
2039 mention (bs
->breakpoint_at
);
2040 ui_out_tuple_begin (uiout
, "value");
2041 ui_out_text (uiout
, "\nOld value = ");
2042 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2043 ui_out_field_stream (uiout
, "old", stb
);
2044 ui_out_text (uiout
, "\nNew value = ");
2045 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2046 ui_out_field_stream (uiout
, "new", stb
);
2047 ui_out_tuple_end (uiout
);
2048 ui_out_text (uiout
, "\n");
2050 mention (bs
->breakpoint_at
);
2051 printf_filtered ("\nOld value = ");
2052 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2053 printf_filtered ("\nNew value = ");
2054 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2055 Val_pretty_default
);
2056 printf_filtered ("\n");
2058 value_free (bs
->old_val
);
2061 /* More than one watchpoint may have been triggered. */
2062 return PRINT_UNKNOWN
;
2065 case bp_read_watchpoint
:
2067 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2068 ui_out_field_string (uiout
, "reason", "read-watchpoint-trigger");
2069 mention (bs
->breakpoint_at
);
2070 ui_out_tuple_begin (uiout
, "value");
2071 ui_out_text (uiout
, "\nValue = ");
2072 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0, Val_pretty_default
);
2073 ui_out_field_stream (uiout
, "value", stb
);
2074 ui_out_tuple_end (uiout
);
2075 ui_out_text (uiout
, "\n");
2077 mention (bs
->breakpoint_at
);
2078 printf_filtered ("\nValue = ");
2079 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2080 Val_pretty_default
);
2081 printf_filtered ("\n");
2083 return PRINT_UNKNOWN
;
2086 case bp_access_watchpoint
:
2088 if (bs
->old_val
!= NULL
)
2090 annotate_watchpoint (bs
->breakpoint_at
->number
);
2091 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2092 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2093 mention (bs
->breakpoint_at
);
2094 ui_out_tuple_begin (uiout
, "value");
2095 ui_out_text (uiout
, "\nOld value = ");
2096 value_print (bs
->old_val
, stb
->stream
, 0, Val_pretty_default
);
2097 ui_out_field_stream (uiout
, "old", stb
);
2098 value_free (bs
->old_val
);
2100 ui_out_text (uiout
, "\nNew value = ");
2104 mention (bs
->breakpoint_at
);
2105 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2106 ui_out_field_string (uiout
, "reason", "access-watchpoint-trigger");
2107 ui_out_tuple_begin (uiout
, "value");
2108 ui_out_text (uiout
, "\nValue = ");
2110 value_print (bs
->breakpoint_at
->val
, stb
->stream
, 0,Val_pretty_default
);
2111 ui_out_field_stream (uiout
, "new", stb
);
2112 ui_out_tuple_end (uiout
);
2113 ui_out_text (uiout
, "\n");
2115 if (bs
->old_val
!= NULL
)
2117 annotate_watchpoint (bs
->breakpoint_at
->number
);
2118 mention (bs
->breakpoint_at
);
2119 printf_filtered ("\nOld value = ");
2120 value_print (bs
->old_val
, gdb_stdout
, 0, Val_pretty_default
);
2121 value_free (bs
->old_val
);
2123 printf_filtered ("\nNew value = ");
2127 mention (bs
->breakpoint_at
);
2128 printf_filtered ("\nValue = ");
2130 value_print (bs
->breakpoint_at
->val
, gdb_stdout
, 0,
2131 Val_pretty_default
);
2132 printf_filtered ("\n");
2134 return PRINT_UNKNOWN
;
2137 /* Fall through, we don't deal with these types of breakpoints
2142 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2143 ui_out_field_string (uiout
, "reason", "function-finished");
2145 return PRINT_UNKNOWN
;
2150 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2151 ui_out_field_string (uiout
, "reason", "location-reached");
2153 return PRINT_UNKNOWN
;
2158 case bp_longjmp_resume
:
2159 case bp_step_resume
:
2160 case bp_through_sigtramp
:
2161 case bp_watchpoint_scope
:
2164 return PRINT_UNKNOWN
;
2168 /* Generic routine for printing messages indicating why we
2169 stopped. The behavior of this function depends on the value
2170 'print_it' in the bpstat structure. Under some circumstances we
2171 may decide not to print anything here and delegate the task to
2174 static enum print_stop_action
2175 print_bp_stop_message (bpstat bs
)
2177 switch (bs
->print_it
)
2180 /* Nothing should be printed for this bpstat entry. */
2181 return PRINT_UNKNOWN
;
2185 /* We still want to print the frame, but we already printed the
2186 relevant messages. */
2187 return PRINT_SRC_AND_LOC
;
2190 case print_it_normal
:
2191 /* Normal case, we handle everything in print_it_typical. */
2192 return print_it_typical (bs
);
2195 internal_error (__FILE__
, __LINE__
,
2196 "print_bp_stop_message: unrecognized enum value");
2201 /* Print a message indicating what happened. This is called from
2202 normal_stop(). The input to this routine is the head of the bpstat
2203 list - a list of the eventpoints that caused this stop. This
2204 routine calls the generic print routine for printing a message
2205 about reasons for stopping. This will print (for example) the
2206 "Breakpoint n," part of the output. The return value of this
2209 PRINT_UNKNOWN: Means we printed nothing
2210 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
2211 code to print the location. An example is
2212 "Breakpoint 1, " which should be followed by
2214 PRINT_SRC_ONLY: Means we printed something, but there is no need
2215 to also print the location part of the message.
2216 An example is the catch/throw messages, which
2217 don't require a location appended to the end.
2218 PRINT_NOTHING: We have done some printing and we don't need any
2219 further info to be printed.*/
2221 enum print_stop_action
2222 bpstat_print (bpstat bs
)
2226 /* Maybe another breakpoint in the chain caused us to stop.
2227 (Currently all watchpoints go on the bpstat whether hit or not.
2228 That probably could (should) be changed, provided care is taken
2229 with respect to bpstat_explains_signal). */
2230 for (; bs
; bs
= bs
->next
)
2232 val
= print_bp_stop_message (bs
);
2233 if (val
== PRINT_SRC_ONLY
2234 || val
== PRINT_SRC_AND_LOC
2235 || val
== PRINT_NOTHING
)
2239 /* We reached the end of the chain, or we got a null BS to start
2240 with and nothing was printed. */
2241 return PRINT_UNKNOWN
;
2244 /* Evaluate the expression EXP and return 1 if value is zero.
2245 This is used inside a catch_errors to evaluate the breakpoint condition.
2246 The argument is a "struct expression *" that has been cast to char * to
2247 make it pass through catch_errors. */
2250 breakpoint_cond_eval (PTR exp
)
2252 value_ptr mark
= value_mark ();
2253 int i
= !value_true (evaluate_expression ((struct expression
*) exp
));
2254 value_free_to_mark (mark
);
2258 /* Allocate a new bpstat and chain it to the current one. */
2261 bpstat_alloc (struct breakpoint
*b
, bpstat cbs
/* Current "bs" value */ )
2265 bs
= (bpstat
) xmalloc (sizeof (*bs
));
2267 bs
->breakpoint_at
= b
;
2268 /* If the condition is false, etc., don't do the commands. */
2269 bs
->commands
= NULL
;
2271 bs
->print_it
= print_it_normal
;
2275 /* Possible return values for watchpoint_check (this can't be an enum
2276 because of check_errors). */
2277 /* The watchpoint has been deleted. */
2278 #define WP_DELETED 1
2279 /* The value has changed. */
2280 #define WP_VALUE_CHANGED 2
2281 /* The value has not changed. */
2282 #define WP_VALUE_NOT_CHANGED 3
2284 #define BP_TEMPFLAG 1
2285 #define BP_HARDWAREFLAG 2
2287 /* Check watchpoint condition. */
2290 watchpoint_check (PTR p
)
2292 bpstat bs
= (bpstat
) p
;
2293 struct breakpoint
*b
;
2294 struct frame_info
*fr
;
2295 int within_current_scope
;
2297 b
= bs
->breakpoint_at
;
2299 if (b
->exp_valid_block
== NULL
)
2300 within_current_scope
= 1;
2303 /* There is no current frame at this moment. If we're going to have
2304 any chance of handling watchpoints on local variables, we'll need
2305 the frame chain (so we can determine if we're in scope). */
2306 reinit_frame_cache ();
2307 fr
= find_frame_addr_in_frame_chain (b
->watchpoint_frame
);
2308 within_current_scope
= (fr
!= NULL
);
2309 if (within_current_scope
)
2310 /* If we end up stopping, the current frame will get selected
2311 in normal_stop. So this call to select_frame won't affect
2313 select_frame (fr
, -1);
2316 if (within_current_scope
)
2318 /* We use value_{,free_to_}mark because it could be a
2319 *long* time before we return to the command level and
2320 call free_all_values. We can't call free_all_values because
2321 we might be in the middle of evaluating a function call. */
2323 value_ptr mark
= value_mark ();
2324 value_ptr new_val
= evaluate_expression (bs
->breakpoint_at
->exp
);
2325 if (!value_equal (b
->val
, new_val
))
2327 release_value (new_val
);
2328 value_free_to_mark (mark
);
2329 bs
->old_val
= b
->val
;
2331 /* We will stop here */
2332 return WP_VALUE_CHANGED
;
2336 /* Nothing changed, don't do anything. */
2337 value_free_to_mark (mark
);
2338 /* We won't stop here */
2339 return WP_VALUE_NOT_CHANGED
;
2344 /* This seems like the only logical thing to do because
2345 if we temporarily ignored the watchpoint, then when
2346 we reenter the block in which it is valid it contains
2347 garbage (in the case of a function, it may have two
2348 garbage values, one before and one after the prologue).
2349 So we can't even detect the first assignment to it and
2350 watch after that (since the garbage may or may not equal
2351 the first value assigned). */
2352 /* We print all the stop information in print_it_typical(), but
2353 in this case, by the time we call print_it_typical() this bp
2354 will be deleted already. So we have no choice but print the
2355 information here. */
2357 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
2358 ui_out_field_string (uiout
, "reason", "watchpoint-scope");
2359 ui_out_text (uiout
, "\nWatchpoint ");
2360 ui_out_field_int (uiout
, "wpnum", bs
->breakpoint_at
->number
);
2361 ui_out_text (uiout
, " deleted because the program has left the block in\n\
2362 which its expression is valid.\n");
2365 Watchpoint %d deleted because the program has left the block in\n\
2366 which its expression is valid.\n", bs
->breakpoint_at
->number
);
2369 if (b
->related_breakpoint
)
2370 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2371 b
->disposition
= del_at_next_stop
;
2377 /* Get a bpstat associated with having just stopped at address *PC
2378 and frame address CORE_ADDRESS. Update *PC to point at the
2379 breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero
2380 if this is known to not be a real breakpoint (it could still be a
2381 watchpoint, though). */
2383 /* Determine whether we stopped at a breakpoint, etc, or whether we
2384 don't understand this stop. Result is a chain of bpstat's such that:
2386 if we don't understand the stop, the result is a null pointer.
2388 if we understand why we stopped, the result is not null.
2390 Each element of the chain refers to a particular breakpoint or
2391 watchpoint at which we have stopped. (We may have stopped for
2392 several reasons concurrently.)
2394 Each element of the chain has valid next, breakpoint_at,
2395 commands, FIXME??? fields. */
2398 bpstat_stop_status (CORE_ADDR
*pc
, int not_a_breakpoint
)
2400 register struct breakpoint
*b
, *temp
;
2402 /* True if we've hit a breakpoint (as opposed to a watchpoint). */
2403 int real_breakpoint
= 0;
2404 /* Root of the chain of bpstat's */
2405 struct bpstats root_bs
[1];
2406 /* Pointer to the last thing in the chain currently. */
2407 bpstat bs
= root_bs
;
2408 static char message1
[] =
2409 "Error evaluating expression for watchpoint %d\n";
2410 char message
[sizeof (message1
) + 30 /* slop */ ];
2412 /* Get the address where the breakpoint would have been. */
2413 bp_addr
= *pc
- (not_a_breakpoint
&& !SOFTWARE_SINGLE_STEP_P () ?
2414 0 : DECR_PC_AFTER_BREAK
);
2416 ALL_BREAKPOINTS_SAFE (b
, temp
)
2418 if (b
->enable
== disabled
2419 || b
->enable
== shlib_disabled
2420 || b
->enable
== call_disabled
)
2423 if (b
->type
!= bp_watchpoint
2424 && b
->type
!= bp_hardware_watchpoint
2425 && b
->type
!= bp_read_watchpoint
2426 && b
->type
!= bp_access_watchpoint
2427 && b
->type
!= bp_hardware_breakpoint
2428 && b
->type
!= bp_catch_fork
2429 && b
->type
!= bp_catch_vfork
2430 && b
->type
!= bp_catch_exec
2431 && b
->type
!= bp_catch_catch
2432 && b
->type
!= bp_catch_throw
) /* a non-watchpoint bp */
2433 if (b
->address
!= bp_addr
|| /* address doesn't match or */
2434 (overlay_debugging
&& /* overlay doesn't match */
2435 section_is_overlay (b
->section
) &&
2436 !section_is_mapped (b
->section
)))
2439 if (b
->type
== bp_hardware_breakpoint
2440 && b
->address
!= (*pc
- DECR_PC_AFTER_HW_BREAK
))
2443 /* Is this a catchpoint of a load or unload? If so, did we
2444 get a load or unload of the specified library? If not,
2446 if ((b
->type
== bp_catch_load
)
2447 #if defined(SOLIB_HAVE_LOAD_EVENT)
2448 && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid
))
2449 || ((b
->dll_pathname
!= NULL
)
2450 && (strcmp (b
->dll_pathname
,
2451 SOLIB_LOADED_LIBRARY_PATHNAME (
2452 PIDGET (inferior_ptid
)))
2458 if ((b
->type
== bp_catch_unload
)
2459 #if defined(SOLIB_HAVE_UNLOAD_EVENT)
2460 && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid
))
2461 || ((b
->dll_pathname
!= NULL
)
2462 && (strcmp (b
->dll_pathname
,
2463 SOLIB_UNLOADED_LIBRARY_PATHNAME (
2464 PIDGET (inferior_ptid
)))
2470 if ((b
->type
== bp_catch_fork
)
2471 && !target_has_forked (PIDGET (inferior_ptid
),
2472 &b
->forked_inferior_pid
))
2475 if ((b
->type
== bp_catch_vfork
)
2476 && !target_has_vforked (PIDGET (inferior_ptid
),
2477 &b
->forked_inferior_pid
))
2480 if ((b
->type
== bp_catch_exec
)
2481 && !target_has_execd (PIDGET (inferior_ptid
), &b
->exec_pathname
))
2484 if (ep_is_exception_catchpoint (b
) &&
2485 !(current_exception_event
= target_get_current_exception_event ()))
2488 /* Come here if it's a watchpoint, or if the break address matches */
2490 bs
= bpstat_alloc (b
, bs
); /* Alloc a bpstat to explain stop */
2492 /* Watchpoints may change this, if not found to have triggered. */
2496 sprintf (message
, message1
, b
->number
);
2497 if (b
->type
== bp_watchpoint
||
2498 b
->type
== bp_hardware_watchpoint
)
2500 switch (catch_errors (watchpoint_check
, bs
, message
,
2504 /* We've already printed what needs to be printed. */
2505 /* Actually this is superfluous, because by the time we
2506 call print_it_typical() the wp will be already deleted,
2507 and the function will return immediately. */
2508 bs
->print_it
= print_it_done
;
2511 case WP_VALUE_CHANGED
:
2515 case WP_VALUE_NOT_CHANGED
:
2517 bs
->print_it
= print_it_noop
;
2524 /* Error from catch_errors. */
2525 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2526 if (b
->related_breakpoint
)
2527 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2528 b
->disposition
= del_at_next_stop
;
2529 /* We've already printed what needs to be printed. */
2530 bs
->print_it
= print_it_done
;
2536 else if (b
->type
== bp_read_watchpoint
||
2537 b
->type
== bp_access_watchpoint
)
2543 addr
= target_stopped_data_address ();
2546 for (v
= b
->val_chain
; v
; v
= v
->next
)
2548 if (VALUE_LVAL (v
) == lval_memory
2549 && ! VALUE_LAZY (v
))
2551 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
2553 if (v
== b
->val_chain
2554 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
2555 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
2559 vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
2560 /* Exact match not required. Within range is
2562 if (addr
>= vaddr
&&
2563 addr
< vaddr
+ TYPE_LENGTH (VALUE_TYPE (v
)))
2569 switch (catch_errors (watchpoint_check
, bs
, message
,
2573 /* We've already printed what needs to be printed. */
2574 bs
->print_it
= print_it_done
;
2577 case WP_VALUE_CHANGED
:
2578 if (b
->type
== bp_read_watchpoint
)
2580 /* Don't stop: read watchpoints shouldn't fire if
2581 the value has changed. This is for targets which
2582 cannot set read-only watchpoints. */
2583 bs
->print_it
= print_it_noop
;
2589 case WP_VALUE_NOT_CHANGED
:
2596 /* Error from catch_errors. */
2597 printf_filtered ("Watchpoint %d deleted.\n", b
->number
);
2598 if (b
->related_breakpoint
)
2599 b
->related_breakpoint
->disposition
= del_at_next_stop
;
2600 b
->disposition
= del_at_next_stop
;
2601 /* We've already printed what needs to be printed. */
2602 bs
->print_it
= print_it_done
;
2605 else /* found == 0 */
2607 /* This is a case where some watchpoint(s) triggered,
2608 but not at the address of this watchpoint (FOUND
2609 was left zero). So don't print anything for this
2611 bs
->print_it
= print_it_noop
;
2618 /* By definition, an encountered breakpoint is a triggered
2622 real_breakpoint
= 1;
2626 b
->frame
!= (get_current_frame ())->frame
)
2630 int value_is_zero
= 0;
2634 /* Need to select the frame, with all that implies
2635 so that the conditions will have the right context. */
2636 select_frame (get_current_frame (), 0);
2638 = catch_errors (breakpoint_cond_eval
, (b
->cond
),
2639 "Error in testing breakpoint condition:\n",
2641 /* FIXME-someday, should give breakpoint # */
2644 if (b
->cond
&& value_is_zero
)
2647 /* Don't consider this a hit. */
2650 else if (b
->ignore_count
> 0)
2653 annotate_ignore_count_change ();
2658 /* We will stop here */
2659 if (b
->disposition
== disable
)
2660 b
->enable
= disabled
;
2661 bs
->commands
= b
->commands
;
2665 (STREQ ("silent", bs
->commands
->line
) ||
2666 (xdb_commands
&& STREQ ("Q", bs
->commands
->line
))))
2668 bs
->commands
= bs
->commands
->next
;
2673 /* Print nothing for this entry if we dont stop or if we dont print. */
2674 if (bs
->stop
== 0 || bs
->print
== 0)
2675 bs
->print_it
= print_it_noop
;
2678 bs
->next
= NULL
; /* Terminate the chain */
2679 bs
= root_bs
->next
; /* Re-grab the head of the chain */
2681 if (real_breakpoint
&& bs
)
2683 if (bs
->breakpoint_at
->type
== bp_hardware_breakpoint
)
2685 if (DECR_PC_AFTER_HW_BREAK
!= 0)
2687 *pc
= *pc
- DECR_PC_AFTER_HW_BREAK
;
2693 if (DECR_PC_AFTER_BREAK
!= 0 || must_shift_inst_regs
)
2696 #if defined (SHIFT_INST_REGS)
2698 #else /* No SHIFT_INST_REGS. */
2700 #endif /* No SHIFT_INST_REGS. */
2705 /* The value of a hardware watchpoint hasn't changed, but the
2706 intermediate memory locations we are watching may have. */
2707 if (bs
&& !bs
->stop
&&
2708 (bs
->breakpoint_at
->type
== bp_hardware_watchpoint
||
2709 bs
->breakpoint_at
->type
== bp_read_watchpoint
||
2710 bs
->breakpoint_at
->type
== bp_access_watchpoint
))
2712 remove_breakpoints ();
2713 insert_breakpoints ();
2718 /* Tell what to do about this bpstat. */
2720 bpstat_what (bpstat bs
)
2722 /* Classify each bpstat as one of the following. */
2725 /* This bpstat element has no effect on the main_action. */
2728 /* There was a watchpoint, stop but don't print. */
2731 /* There was a watchpoint, stop and print. */
2734 /* There was a breakpoint but we're not stopping. */
2737 /* There was a breakpoint, stop but don't print. */
2740 /* There was a breakpoint, stop and print. */
2743 /* We hit the longjmp breakpoint. */
2746 /* We hit the longjmp_resume breakpoint. */
2749 /* We hit the step_resume breakpoint. */
2752 /* We hit the through_sigtramp breakpoint. */
2755 /* We hit the shared library event breakpoint. */
2758 /* We caught a shared library event. */
2761 /* This is just used to count how many enums there are. */
2765 /* Here is the table which drives this routine. So that we can
2766 format it pretty, we define some abbreviations for the
2767 enum bpstat_what codes. */
2768 #define kc BPSTAT_WHAT_KEEP_CHECKING
2769 #define ss BPSTAT_WHAT_STOP_SILENT
2770 #define sn BPSTAT_WHAT_STOP_NOISY
2771 #define sgl BPSTAT_WHAT_SINGLE
2772 #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME
2773 #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
2774 #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
2775 #define sr BPSTAT_WHAT_STEP_RESUME
2776 #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP
2777 #define shl BPSTAT_WHAT_CHECK_SHLIBS
2778 #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
2780 /* "Can't happen." Might want to print an error message.
2781 abort() is not out of the question, but chances are GDB is just
2782 a bit confused, not unusable. */
2783 #define err BPSTAT_WHAT_STOP_NOISY
2785 /* Given an old action and a class, come up with a new action. */
2786 /* One interesting property of this table is that wp_silent is the same
2787 as bp_silent and wp_noisy is the same as bp_noisy. That is because
2788 after stopping, the check for whether to step over a breakpoint
2789 (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without
2790 reference to how we stopped. We retain separate wp_silent and
2791 bp_silent codes in case we want to change that someday.
2793 Another possibly interesting property of this table is that
2794 there's a partial ordering, priority-like, of the actions. Once
2795 you've decided that some action is appropriate, you'll never go
2796 back and decide something of a lower priority is better. The
2799 kc < clr sgl shl shlr slr sn sr ss ts
2800 sgl < clrs shl shlr slr sn sr ss ts
2801 slr < err shl shlr sn sr ss ts
2802 clr < clrs err shl shlr sn sr ss ts
2803 clrs < err shl shlr sn sr ss ts
2804 ss < shl shlr sn sr ts
2811 What I think this means is that we don't need a damned table
2812 here. If you just put the rows and columns in the right order,
2813 it'd look awfully regular. We could simply walk the bpstat list
2814 and choose the highest priority action we find, with a little
2815 logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/
2816 CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says
2817 is messy anyway). */
2819 /* step_resume entries: a step resume breakpoint overrides another
2820 breakpoint of signal handling (see comment in wait_for_inferior
2821 at first IN_SIGTRAMP where we set the step_resume breakpoint). */
2822 /* We handle the through_sigtramp_breakpoint the same way; having both
2823 one of those and a step_resume_breakpoint is probably very rare (?). */
2825 static const enum bpstat_what_main_action
2826 table
[(int) class_last
][(int) BPSTAT_WHAT_LAST
] =
2829 /* kc ss sn sgl slr clr clrs sr ts shl shlr
2832 {kc
, ss
, sn
, sgl
, slr
, clr
, clrs
, sr
, ts
, shl
, shlr
},
2834 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2836 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2838 {sgl
, ss
, sn
, sgl
, slr
, clrs
, clrs
, sr
, ts
, shl
, shlr
},
2840 {ss
, ss
, sn
, ss
, ss
, ss
, ss
, sr
, ts
, shl
, shlr
},
2842 {sn
, sn
, sn
, sn
, sn
, sn
, sn
, sr
, ts
, shl
, shlr
},
2844 {slr
, ss
, sn
, slr
, slr
, err
, err
, sr
, ts
, shl
, shlr
},
2846 {clr
, ss
, sn
, clrs
, err
, err
, err
, sr
, ts
, shl
, shlr
},
2848 {sr
, sr
, sr
, sr
, sr
, sr
, sr
, sr
, ts
, shl
, shlr
},
2850 {ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, ts
, shl
, shlr
},
2852 {shl
, shl
, shl
, shl
, shl
, shl
, shl
, shl
, ts
, shl
, shlr
},
2854 {shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, shlr
, ts
, shlr
, shlr
}
2869 enum bpstat_what_main_action current_action
= BPSTAT_WHAT_KEEP_CHECKING
;
2870 struct bpstat_what retval
;
2872 retval
.call_dummy
= 0;
2873 for (; bs
!= NULL
; bs
= bs
->next
)
2875 enum class bs_class
= no_effect
;
2876 if (bs
->breakpoint_at
== NULL
)
2877 /* I suspect this can happen if it was a momentary breakpoint
2878 which has since been deleted. */
2880 switch (bs
->breakpoint_at
->type
)
2886 case bp_hardware_breakpoint
:
2892 bs_class
= bp_noisy
;
2894 bs_class
= bp_silent
;
2897 bs_class
= bp_nostop
;
2900 case bp_hardware_watchpoint
:
2901 case bp_read_watchpoint
:
2902 case bp_access_watchpoint
:
2906 bs_class
= wp_noisy
;
2908 bs_class
= wp_silent
;
2911 /* There was a watchpoint, but we're not stopping.
2912 This requires no further action. */
2913 bs_class
= no_effect
;
2916 bs_class
= long_jump
;
2918 case bp_longjmp_resume
:
2919 bs_class
= long_resume
;
2921 case bp_step_resume
:
2924 bs_class
= step_resume
;
2927 /* It is for the wrong frame. */
2928 bs_class
= bp_nostop
;
2930 case bp_through_sigtramp
:
2931 bs_class
= through_sig
;
2933 case bp_watchpoint_scope
:
2934 bs_class
= bp_nostop
;
2936 case bp_shlib_event
:
2937 bs_class
= shlib_event
;
2939 case bp_thread_event
:
2940 bs_class
= bp_nostop
;
2943 case bp_catch_unload
:
2944 /* Only if this catchpoint triggered should we cause the
2945 step-out-of-dld behaviour. Otherwise, we ignore this
2948 bs_class
= catch_shlib_event
;
2950 bs_class
= no_effect
;
2953 case bp_catch_vfork
:
2958 bs_class
= bp_noisy
;
2960 bs_class
= bp_silent
;
2963 /* There was a catchpoint, but we're not stopping.
2964 This requires no further action. */
2965 bs_class
= no_effect
;
2967 case bp_catch_catch
:
2968 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_CATCH
)
2969 bs_class
= bp_nostop
;
2971 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2973 case bp_catch_throw
:
2974 if (!bs
->stop
|| CURRENT_EXCEPTION_KIND
!= EX_EVENT_THROW
)
2975 bs_class
= bp_nostop
;
2977 bs_class
= bs
->print
? bp_noisy
: bp_silent
;
2980 /* Make sure the action is stop (silent or noisy),
2981 so infrun.c pops the dummy frame. */
2982 bs_class
= bp_silent
;
2983 retval
.call_dummy
= 1;
2986 current_action
= table
[(int) bs_class
][(int) current_action
];
2988 retval
.main_action
= current_action
;
2992 /* Nonzero if we should step constantly (e.g. watchpoints on machines
2993 without hardware support). This isn't related to a specific bpstat,
2994 just to things like whether watchpoints are set. */
2997 bpstat_should_step (void)
2999 struct breakpoint
*b
;
3001 if (b
->enable
== enabled
&& b
->type
== bp_watchpoint
)
3006 /* Nonzero if there are enabled hardware watchpoints. */
3008 bpstat_have_active_hw_watchpoints (void)
3010 struct breakpoint
*b
;
3012 if ((b
->enable
== enabled
) &&
3014 ((b
->type
== bp_hardware_watchpoint
) ||
3015 (b
->type
== bp_read_watchpoint
) ||
3016 (b
->type
== bp_access_watchpoint
)))
3022 /* Given a bpstat that records zero or more triggered eventpoints, this
3023 function returns another bpstat which contains only the catchpoints
3024 on that first list, if any. */
3026 bpstat_get_triggered_catchpoints (bpstat ep_list
, bpstat
*cp_list
)
3028 struct bpstats root_bs
[1];
3029 bpstat bs
= root_bs
;
3030 struct breakpoint
*ep
;
3033 bpstat_clear (cp_list
);
3034 root_bs
->next
= NULL
;
3036 for (; ep_list
!= NULL
; ep_list
= ep_list
->next
)
3038 /* Is this eventpoint a catchpoint? If not, ignore it. */
3039 ep
= ep_list
->breakpoint_at
;
3042 if ((ep
->type
!= bp_catch_load
) &&
3043 (ep
->type
!= bp_catch_unload
) &&
3044 (ep
->type
!= bp_catch_catch
) &&
3045 (ep
->type
!= bp_catch_throw
))
3046 /* pai: (temp) ADD fork/vfork here!! */
3049 /* Yes; add it to the list. */
3050 bs
= bpstat_alloc (ep
, bs
);
3055 #if defined(SOLIB_ADD)
3056 /* Also, for each triggered catchpoint, tag it with the name of
3057 the library that caused this trigger. (We copy the name now,
3058 because it's only guaranteed to be available NOW, when the
3059 catchpoint triggers. Clients who may wish to know the name
3060 later must get it from the catchpoint itself.) */
3061 if (ep
->triggered_dll_pathname
!= NULL
)
3062 xfree (ep
->triggered_dll_pathname
);
3063 if (ep
->type
== bp_catch_load
)
3064 dll_pathname
= SOLIB_LOADED_LIBRARY_PATHNAME (
3065 PIDGET (inferior_ptid
));
3067 dll_pathname
= SOLIB_UNLOADED_LIBRARY_PATHNAME (
3068 PIDGET (inferior_ptid
));
3070 dll_pathname
= NULL
;
3074 ep
->triggered_dll_pathname
= (char *)
3075 xmalloc (strlen (dll_pathname
) + 1);
3076 strcpy (ep
->triggered_dll_pathname
, dll_pathname
);
3079 ep
->triggered_dll_pathname
= NULL
;
3085 /* Print B to gdb_stdout. */
3087 print_one_breakpoint (struct breakpoint
*b
,
3088 CORE_ADDR
*last_addr
)
3090 register struct command_line
*l
;
3091 register struct symbol
*sym
;
3092 struct ep_type_description
3097 static struct ep_type_description bptypes
[] =
3099 {bp_none
, "?deleted?"},
3100 {bp_breakpoint
, "breakpoint"},
3101 {bp_hardware_breakpoint
, "hw breakpoint"},
3102 {bp_until
, "until"},
3103 {bp_finish
, "finish"},
3104 {bp_watchpoint
, "watchpoint"},
3105 {bp_hardware_watchpoint
, "hw watchpoint"},
3106 {bp_read_watchpoint
, "read watchpoint"},
3107 {bp_access_watchpoint
, "acc watchpoint"},
3108 {bp_longjmp
, "longjmp"},
3109 {bp_longjmp_resume
, "longjmp resume"},
3110 {bp_step_resume
, "step resume"},
3111 {bp_through_sigtramp
, "sigtramp"},
3112 {bp_watchpoint_scope
, "watchpoint scope"},
3113 {bp_call_dummy
, "call dummy"},
3114 {bp_shlib_event
, "shlib events"},
3115 {bp_thread_event
, "thread events"},
3116 {bp_catch_load
, "catch load"},
3117 {bp_catch_unload
, "catch unload"},
3118 {bp_catch_fork
, "catch fork"},
3119 {bp_catch_vfork
, "catch vfork"},
3120 {bp_catch_exec
, "catch exec"},
3121 {bp_catch_catch
, "catch catch"},
3122 {bp_catch_throw
, "catch throw"}
3125 static char *bpdisps
[] =
3126 {"del", "dstp", "dis", "keep"};
3127 static char bpenables
[] = "nynny";
3128 char wrap_indent
[80];
3130 struct ui_stream
*stb
= ui_out_stream_new (uiout
);
3131 struct cleanup
*old_chain
= make_cleanup_ui_out_stream_delete (stb
);
3136 ui_out_tuple_begin (uiout
, "bkpt");
3142 ui_out_field_int (uiout
, "number", b
->number
);
3144 printf_filtered ("%-3d ", b
->number
);
3149 if (((int) b
->type
> (sizeof (bptypes
) / sizeof (bptypes
[0])))
3150 || ((int) b
->type
!= bptypes
[(int) b
->type
].type
))
3151 internal_error (__FILE__
, __LINE__
,
3152 "bptypes table does not describe type #%d.",
3155 ui_out_field_string (uiout
, "type", bptypes
[(int) b
->type
].description
);
3157 printf_filtered ("%-14s ", bptypes
[(int) b
->type
].description
);
3163 ui_out_field_string (uiout
, "disp", bpdisps
[(int) b
->disposition
]);
3165 printf_filtered ("%-4s ", bpdisps
[(int) b
->disposition
]);
3171 ui_out_field_fmt (uiout
, "enabled", "%c", bpenables
[(int) b
->enable
]);
3172 ui_out_spaces (uiout
, 2);
3174 printf_filtered ("%-3c ", bpenables
[(int) b
->enable
]);
3178 strcpy (wrap_indent
, " ");
3181 if (TARGET_ADDR_BIT
<= 32)
3182 strcat (wrap_indent
, " ");
3184 strcat (wrap_indent
, " ");
3189 internal_error (__FILE__
, __LINE__
,
3190 "print_one_breakpoint: bp_none encountered\n");
3194 case bp_hardware_watchpoint
:
3195 case bp_read_watchpoint
:
3196 case bp_access_watchpoint
:
3197 /* Field 4, the address, is omitted (which makes the columns
3198 not line up too nicely with the headers, but the effect
3199 is relatively readable). */
3202 ui_out_field_skip (uiout
, "addr");
3204 print_expression (b
->exp
, stb
->stream
);
3205 ui_out_field_stream (uiout
, "what", stb
);
3208 print_expression (b
->exp
, gdb_stdout
);
3213 case bp_catch_unload
:
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
->dll_pathname
== NULL
)
3223 ui_out_field_string (uiout
, "what", "<any library>");
3224 ui_out_spaces (uiout
, 1);
3228 ui_out_text (uiout
, "library \"");
3229 ui_out_field_string (uiout
, "what", b
->dll_pathname
);
3230 ui_out_text (uiout
, "\" ");
3234 if (b
->dll_pathname
== NULL
)
3235 printf_filtered ("<any library> ");
3237 printf_filtered ("library \"%s\" ", b
->dll_pathname
);
3242 case bp_catch_vfork
:
3243 /* Field 4, the address, is omitted (which makes the columns
3244 not line up too nicely with the headers, but the effect
3245 is relatively readable). */
3248 ui_out_field_skip (uiout
, "addr");
3250 if (b
->forked_inferior_pid
!= 0)
3252 ui_out_text (uiout
, "process ");
3253 ui_out_field_int (uiout
, "what", b
->forked_inferior_pid
);
3254 ui_out_spaces (uiout
, 1);
3258 if (b
->forked_inferior_pid
!= 0)
3259 printf_filtered ("process %d ", b
->forked_inferior_pid
);
3264 /* Field 4, the address, is omitted (which makes the columns
3265 not line up too nicely with the headers, but the effect
3266 is relatively readable). */
3269 ui_out_field_skip (uiout
, "addr");
3271 if (b
->exec_pathname
!= NULL
)
3273 ui_out_text (uiout
, "program \"");
3274 ui_out_field_string (uiout
, "what", b
->exec_pathname
);
3275 ui_out_text (uiout
, "\" ");
3279 if (b
->exec_pathname
!= NULL
)
3280 printf_filtered ("program \"%s\" ", b
->exec_pathname
);
3284 case bp_catch_catch
:
3285 /* Field 4, the address, is omitted (which makes the columns
3286 not line up too nicely with the headers, but the effect
3287 is relatively readable). */
3290 ui_out_field_skip (uiout
, "addr");
3292 ui_out_field_string (uiout
, "what", "exception catch");
3293 ui_out_spaces (uiout
, 1);
3296 printf_filtered ("exception catch ");
3300 case bp_catch_throw
:
3301 /* Field 4, the address, is omitted (which makes the columns
3302 not line up too nicely with the headers, but the effect
3303 is relatively readable). */
3306 ui_out_field_skip (uiout
, "addr");
3308 ui_out_field_string (uiout
, "what", "exception throw");
3309 ui_out_spaces (uiout
, 1);
3312 printf_filtered ("exception throw ");
3317 case bp_hardware_breakpoint
:
3321 case bp_longjmp_resume
:
3322 case bp_step_resume
:
3323 case bp_through_sigtramp
:
3324 case bp_watchpoint_scope
:
3326 case bp_shlib_event
:
3327 case bp_thread_event
:
3332 ui_out_field_core_addr (uiout
, "addr", b
->address
);
3335 *last_addr
= b
->address
;
3338 sym
= find_pc_sect_function (b
->address
, b
->section
);
3341 ui_out_text (uiout
, "in ");
3342 ui_out_field_string (uiout
, "func",
3343 SYMBOL_SOURCE_NAME (sym
));
3344 ui_out_wrap_hint (uiout
, wrap_indent
);
3345 ui_out_text (uiout
, " at ");
3347 ui_out_field_string (uiout
, "file", b
->source_file
);
3348 ui_out_text (uiout
, ":");
3349 ui_out_field_int (uiout
, "line", b
->line_number
);
3353 print_address_symbolic (b
->address
, stb
->stream
, demangle
, "");
3354 ui_out_field_stream (uiout
, "at", stb
);
3363 if (TARGET_ADDR_BIT
<= 32)
3364 tmp
= longest_local_hex_string_custom (b
->address
3365 & (CORE_ADDR
) 0xffffffff,
3368 tmp
= longest_local_hex_string_custom (b
->address
, "016l");
3370 printf_filtered ("%s ", tmp
);
3373 *last_addr
= b
->address
;
3376 sym
= find_pc_sect_function (b
->address
, b
->section
);
3379 fputs_filtered ("in ", gdb_stdout
);
3380 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), gdb_stdout
);
3381 wrap_here (wrap_indent
);
3382 fputs_filtered (" at ", gdb_stdout
);
3384 fputs_filtered (b
->source_file
, gdb_stdout
);
3385 printf_filtered (":%d", b
->line_number
);
3388 print_address_symbolic (b
->address
, gdb_stdout
, demangle
, " ");
3393 if (b
->thread
!= -1)
3396 /* FIXME: This seems to be redundant and lost here; see the
3397 "stop only in" line a little further down. */
3398 ui_out_text (uiout
, " thread ");
3399 ui_out_field_int (uiout
, "thread", b
->thread
);
3401 printf_filtered (" thread %d", b
->thread
);
3406 ui_out_text (uiout
, "\n");
3408 printf_filtered ("\n");
3415 ui_out_text (uiout
, "\tstop only in stack frame at ");
3416 ui_out_field_core_addr (uiout
, "frame", b
->frame
);
3417 ui_out_text (uiout
, "\n");
3419 printf_filtered ("\tstop only in stack frame at ");
3420 print_address_numeric (b
->frame
, 1, gdb_stdout
);
3421 printf_filtered ("\n");
3429 ui_out_text (uiout
, "\tstop only if ");
3430 print_expression (b
->cond
, stb
->stream
);
3431 ui_out_field_stream (uiout
, "cond", stb
);
3432 ui_out_text (uiout
, "\n");
3434 printf_filtered ("\tstop only if ");
3435 print_expression (b
->cond
, gdb_stdout
);
3436 printf_filtered ("\n");
3440 if (b
->thread
!= -1)
3442 /* FIXME should make an annotation for this */
3444 ui_out_text (uiout
, "\tstop only in thread ");
3445 ui_out_field_int (uiout
, "thread", b
->thread
);
3446 ui_out_text (uiout
, "\n");
3448 printf_filtered ("\tstop only in thread %d\n", b
->thread
);
3452 if (show_breakpoint_hit_counts
&& b
->hit_count
)
3454 /* FIXME should make an annotation for this */
3456 if (ep_is_catchpoint (b
))
3457 ui_out_text (uiout
, "\tcatchpoint");
3459 ui_out_text (uiout
, "\tbreakpoint");
3460 ui_out_text (uiout
, " already hit ");
3461 ui_out_field_int (uiout
, "times", b
->hit_count
);
3462 if (b
->hit_count
== 1)
3463 ui_out_text (uiout
, " time\n");
3465 ui_out_text (uiout
, " times\n");
3467 if (ep_is_catchpoint (b
))
3468 printf_filtered ("\tcatchpoint");
3470 printf_filtered ("\tbreakpoint");
3471 printf_filtered (" already hit %d time%s\n",
3472 b
->hit_count
, (b
->hit_count
== 1 ? "" : "s"));
3477 /* Output the count also if it is zero, but only if this is
3478 mi. FIXME: Should have a better test for this. */
3479 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
3480 if (show_breakpoint_hit_counts
&& b
->hit_count
== 0)
3481 ui_out_field_int (uiout
, "times", b
->hit_count
);
3484 if (b
->ignore_count
)
3488 ui_out_text (uiout
, "\tignore next ");
3489 ui_out_field_int (uiout
, "ignore", b
->ignore_count
);
3490 ui_out_text (uiout
, " hits\n");
3492 printf_filtered ("\tignore next %d hits\n", b
->ignore_count
);
3496 if ((l
= b
->commands
))
3500 ui_out_tuple_begin (uiout
, "script");
3501 print_command_lines (uiout
, l
, 4);
3502 ui_out_tuple_end (uiout
);
3506 print_command_line (l
, 4, gdb_stdout
);
3512 ui_out_tuple_end (uiout
);
3513 do_cleanups (old_chain
);
3517 struct captured_breakpoint_query_args
3523 do_captured_breakpoint_query (void *data
)
3525 struct captured_breakpoint_query_args
*args
= data
;
3526 register struct breakpoint
*b
;
3527 CORE_ADDR dummy_addr
= 0;
3530 if (args
->bnum
== b
->number
)
3532 print_one_breakpoint (b
, &dummy_addr
);
3540 gdb_breakpoint_query (/* output object, */ int bnum
)
3542 struct captured_breakpoint_query_args args
;
3544 /* For the moment we don't trust print_one_breakpoint() to not throw
3546 return catch_errors (do_captured_breakpoint_query
, &args
,
3547 NULL
, RETURN_MASK_ALL
);
3550 /* Return non-zero if B is user settable (breakpoints, watchpoints,
3551 catchpoints, et.al.). */
3554 user_settable_breakpoint (const struct breakpoint
*b
)
3556 return (b
->type
== bp_breakpoint
3557 || b
->type
== bp_catch_load
3558 || b
->type
== bp_catch_unload
3559 || b
->type
== bp_catch_fork
3560 || b
->type
== bp_catch_vfork
3561 || b
->type
== bp_catch_exec
3562 || b
->type
== bp_catch_catch
3563 || b
->type
== bp_catch_throw
3564 || b
->type
== bp_hardware_breakpoint
3565 || b
->type
== bp_watchpoint
3566 || b
->type
== bp_read_watchpoint
3567 || b
->type
== bp_access_watchpoint
3568 || b
->type
== bp_hardware_watchpoint
);
3571 /* Print information on user settable breakpoint (watchpoint, etc)
3572 number BNUM. If BNUM is -1 print all user settable breakpoints.
3573 If ALLFLAG is non-zero, include non- user settable breakpoints. */
3576 breakpoint_1 (int bnum
, int allflag
)
3578 register struct breakpoint
*b
;
3579 CORE_ADDR last_addr
= (CORE_ADDR
) -1;
3580 int nr_printable_breakpoints
;
3582 /* Compute the number of rows in the table. */
3583 nr_printable_breakpoints
= 0;
3586 || bnum
== b
->number
)
3588 if (allflag
|| user_settable_breakpoint (b
))
3589 nr_printable_breakpoints
++;
3594 ui_out_table_begin (uiout
, 6, nr_printable_breakpoints
, "BreakpointTable");
3596 ui_out_table_begin (uiout
, 5, nr_printable_breakpoints
, "BreakpointTable");
3600 if (nr_printable_breakpoints
> 0)
3601 annotate_breakpoints_headers ();
3602 if (nr_printable_breakpoints
> 0)
3604 ui_out_table_header (uiout
, 3, ui_left
, "number", "Num"); /* 1 */
3605 if (nr_printable_breakpoints
> 0)
3607 ui_out_table_header (uiout
, 14, ui_left
, "type", "Type"); /* 2 */
3608 if (nr_printable_breakpoints
> 0)
3610 ui_out_table_header (uiout
, 4, ui_left
, "disp", "Disp"); /* 3 */
3611 if (nr_printable_breakpoints
> 0)
3613 ui_out_table_header (uiout
, 3, ui_left
, "enabled", "Enb"); /* 4 */
3616 if (nr_printable_breakpoints
> 0)
3618 if (TARGET_ADDR_BIT
<= 32)
3619 ui_out_table_header (uiout
, 10, ui_left
, "addr", "Address");/* 5 */
3621 ui_out_table_header (uiout
, 18, ui_left
, "addr", "Address");/* 5 */
3623 if (nr_printable_breakpoints
> 0)
3625 ui_out_table_header (uiout
, 40, ui_noalign
, "what", "What"); /* 6 */
3626 ui_out_table_body (uiout
);
3627 if (nr_printable_breakpoints
> 0)
3628 annotate_breakpoints_table ();
3630 if (nr_printable_breakpoints
> 0)
3632 annotate_breakpoints_headers ();
3634 printf_filtered ("Num ");
3636 printf_filtered ("Type ");
3638 printf_filtered ("Disp ");
3640 printf_filtered ("Enb ");
3644 if (TARGET_ADDR_BIT
<= 32)
3645 printf_filtered ("Address ");
3647 printf_filtered ("Address ");
3650 printf_filtered ("What\n");
3651 annotate_breakpoints_table ();
3657 || bnum
== b
->number
)
3659 /* We only print out user settable breakpoints unless the
3661 if (allflag
|| user_settable_breakpoint (b
))
3662 print_one_breakpoint (b
, &last_addr
);
3667 ui_out_table_end (uiout
);
3670 if (nr_printable_breakpoints
== 0)
3674 ui_out_message (uiout
, 0, "No breakpoints or watchpoints.\n");
3676 ui_out_message (uiout
, 0, "No breakpoint or watchpoint number %d.\n",
3680 printf_filtered ("No breakpoints or watchpoints.\n");
3682 printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum
);
3687 /* Compare against (CORE_ADDR)-1 in case some compiler decides
3688 that a comparison of an unsigned with -1 is always false. */
3689 if (last_addr
!= (CORE_ADDR
) -1)
3690 set_next_address (last_addr
);
3693 /* FIXME? Should this be moved up so that it is only called when
3694 there have been breakpoints? */
3695 annotate_breakpoints_table_end ();
3700 breakpoints_info (char *bnum_exp
, int from_tty
)
3705 bnum
= parse_and_eval_long (bnum_exp
);
3707 breakpoint_1 (bnum
, 0);
3712 maintenance_info_breakpoints (char *bnum_exp
, int from_tty
)
3717 bnum
= parse_and_eval_long (bnum_exp
);
3719 breakpoint_1 (bnum
, 1);
3722 /* Print a message describing any breakpoints set at PC. */
3725 describe_other_breakpoints (CORE_ADDR pc
, asection
*section
)
3727 register int others
= 0;
3728 register struct breakpoint
*b
;
3731 if (b
->address
== pc
)
3732 if (overlay_debugging
== 0 ||
3733 b
->section
== section
)
3737 printf_filtered ("Note: breakpoint%s ", (others
> 1) ? "s" : "");
3739 if (b
->address
== pc
)
3740 if (overlay_debugging
== 0 ||
3741 b
->section
== section
)
3744 printf_filtered ("%d%s%s ",
3746 ((b
->enable
== disabled
||
3747 b
->enable
== shlib_disabled
||
3748 b
->enable
== call_disabled
) ? " (disabled)"
3749 : b
->enable
== permanent
? " (permanent)"
3752 : ((others
== 1) ? " and" : ""));
3754 printf_filtered ("also set at pc ");
3755 print_address_numeric (pc
, 1, gdb_stdout
);
3756 printf_filtered (".\n");
3760 /* Set the default place to put a breakpoint
3761 for the `break' command with no arguments. */
3764 set_default_breakpoint (int valid
, CORE_ADDR addr
, struct symtab
*symtab
,
3767 default_breakpoint_valid
= valid
;
3768 default_breakpoint_address
= addr
;
3769 default_breakpoint_symtab
= symtab
;
3770 default_breakpoint_line
= line
;
3773 /* Return true iff it is meaningful to use the address member of
3774 BPT. For some breakpoint types, the address member is irrelevant
3775 and it makes no sense to attempt to compare it to other addresses
3776 (or use it for any other purpose either).
3778 More specifically, each of the following breakpoint types will always
3779 have a zero valued address and we don't want check_duplicates() to mark
3780 breakpoints of any of these types to be a duplicate of an actual
3781 breakpoint at address zero:
3784 bp_hardware_watchpoint
3786 bp_access_watchpoint
3793 breakpoint_address_is_meaningful (struct breakpoint
*bpt
)
3795 enum bptype type
= bpt
->type
;
3797 return (type
!= bp_watchpoint
3798 && type
!= bp_hardware_watchpoint
3799 && type
!= bp_read_watchpoint
3800 && type
!= bp_access_watchpoint
3801 && type
!= bp_catch_exec
3802 && type
!= bp_longjmp_resume
3803 && type
!= bp_catch_fork
3804 && type
!= bp_catch_vfork
);
3807 /* Rescan breakpoints at the same address and section as BPT,
3808 marking the first one as "first" and any others as "duplicates".
3809 This is so that the bpt instruction is only inserted once.
3810 If we have a permanent breakpoint at the same place as BPT, make
3811 that one the official one, and the rest as duplicates. */
3814 check_duplicates (struct breakpoint
*bpt
)
3816 register struct breakpoint
*b
;
3817 register int count
= 0;
3818 struct breakpoint
*perm_bp
= 0;
3819 CORE_ADDR address
= bpt
->address
;
3820 asection
*section
= bpt
->section
;
3822 if (! breakpoint_address_is_meaningful (bpt
))
3826 if (b
->enable
!= disabled
3827 && b
->enable
!= shlib_disabled
3828 && b
->enable
!= call_disabled
3829 && b
->address
== address
3830 && (overlay_debugging
== 0 || b
->section
== section
)
3831 && breakpoint_address_is_meaningful (b
))
3833 /* Have we found a permanent breakpoint? */
3834 if (b
->enable
== permanent
)
3841 b
->duplicate
= count
> 1;
3844 /* If we found a permanent breakpoint at this address, go over the
3845 list again and declare all the other breakpoints there to be the
3849 perm_bp
->duplicate
= 0;
3851 /* Permanent breakpoint should always be inserted. */
3852 if (! perm_bp
->inserted
)
3853 internal_error (__FILE__
, __LINE__
,
3854 "allegedly permanent breakpoint is not "
3855 "actually inserted");
3861 internal_error (__FILE__
, __LINE__
,
3862 "another breakpoint was inserted on top of "
3863 "a permanent breakpoint");
3865 if (b
->enable
!= disabled
3866 && b
->enable
!= shlib_disabled
3867 && b
->enable
!= call_disabled
3868 && b
->address
== address
3869 && (overlay_debugging
== 0 || b
->section
== section
)
3870 && breakpoint_address_is_meaningful (b
))
3876 /* set_raw_breakpoint() is a low level routine for allocating and
3877 partially initializing a breakpoint of type BPTYPE. The newly
3878 created breakpoint's address, section, source file name, and line
3879 number are provided by SAL. The newly created and partially
3880 initialized breakpoint is added to the breakpoint chain and
3881 is also returned as the value of this function.
3883 It is expected that the caller will complete the initialization of
3884 the newly created breakpoint struct as well as output any status
3885 information regarding the creation of a new breakpoint. In
3886 particular, set_raw_breakpoint() does NOT set the breakpoint
3887 number! Care should be taken to not allow an error() to occur
3888 prior to completing the initialization of the breakpoint. If this
3889 should happen, a bogus breakpoint will be left on the chain. */
3892 set_raw_breakpoint (struct symtab_and_line sal
, enum bptype bptype
)
3894 register struct breakpoint
*b
, *b1
;
3896 b
= (struct breakpoint
*) xmalloc (sizeof (struct breakpoint
));
3897 memset (b
, 0, sizeof (*b
));
3898 b
->address
= sal
.pc
;
3899 if (sal
.symtab
== NULL
)
3900 b
->source_file
= NULL
;
3902 b
->source_file
= savestring (sal
.symtab
->filename
,
3903 strlen (sal
.symtab
->filename
));
3904 b
->section
= sal
.section
;
3906 b
->language
= current_language
->la_language
;
3907 b
->input_radix
= input_radix
;
3909 b
->line_number
= sal
.line
;
3910 b
->enable
= enabled
;
3913 b
->ignore_count
= 0;
3916 b
->dll_pathname
= NULL
;
3917 b
->triggered_dll_pathname
= NULL
;
3918 b
->forked_inferior_pid
= 0;
3919 b
->exec_pathname
= NULL
;
3921 /* Add this breakpoint to the end of the chain
3922 so that a list of breakpoints will come out in order
3923 of increasing numbers. */
3925 b1
= breakpoint_chain
;
3927 breakpoint_chain
= b
;
3935 check_duplicates (b
);
3936 breakpoints_changed ();
3942 /* Note that the breakpoint object B describes a permanent breakpoint
3943 instruction, hard-wired into the inferior's code. */
3945 make_breakpoint_permanent (struct breakpoint
*b
)
3947 b
->enable
= permanent
;
3949 /* By definition, permanent breakpoints are already present in the code. */
3953 #ifdef GET_LONGJMP_TARGET
3956 create_longjmp_breakpoint (char *func_name
)
3958 struct symtab_and_line sal
;
3959 struct breakpoint
*b
;
3961 INIT_SAL (&sal
); /* initialize to zeroes */
3962 if (func_name
!= NULL
)
3964 struct minimal_symbol
*m
;
3966 m
= lookup_minimal_symbol_text (func_name
, NULL
,
3967 (struct objfile
*) NULL
);
3969 sal
.pc
= SYMBOL_VALUE_ADDRESS (m
);
3973 sal
.section
= find_pc_overlay (sal
.pc
);
3974 b
= set_raw_breakpoint (sal
,
3975 func_name
!= NULL
? bp_longjmp
: bp_longjmp_resume
);
3977 b
->disposition
= donttouch
;
3978 b
->enable
= disabled
;
3981 b
->addr_string
= xstrdup (func_name
);
3982 b
->number
= internal_breakpoint_number
--;
3985 #endif /* #ifdef GET_LONGJMP_TARGET */
3987 /* Call this routine when stepping and nexting to enable a breakpoint
3988 if we do a longjmp(). When we hit that breakpoint, call
3989 set_longjmp_resume_breakpoint() to figure out where we are going. */
3992 enable_longjmp_breakpoint (void)
3994 register struct breakpoint
*b
;
3997 if (b
->type
== bp_longjmp
)
3999 b
->enable
= enabled
;
4000 check_duplicates (b
);
4005 disable_longjmp_breakpoint (void)
4007 register struct breakpoint
*b
;
4010 if (b
->type
== bp_longjmp
4011 || b
->type
== bp_longjmp_resume
)
4013 b
->enable
= disabled
;
4014 check_duplicates (b
);
4019 create_thread_event_breakpoint (CORE_ADDR address
)
4021 struct breakpoint
*b
;
4022 struct symtab_and_line sal
;
4023 char addr_string
[80]; /* Surely an addr can't be longer than that. */
4025 INIT_SAL (&sal
); /* initialize to zeroes */
4027 sal
.section
= find_pc_overlay (sal
.pc
);
4028 b
= set_raw_breakpoint (sal
, bp_thread_event
);
4030 b
->number
= internal_breakpoint_number
--;
4031 b
->disposition
= donttouch
;
4032 b
->enable
= enabled
;
4033 /* addr_string has to be used or breakpoint_re_set will delete me. */
4034 sprintf (addr_string
, "*0x%s", paddr (b
->address
));
4035 b
->addr_string
= xstrdup (addr_string
);
4041 remove_thread_event_breakpoints (void)
4043 struct breakpoint
*b
, *temp
;
4045 ALL_BREAKPOINTS_SAFE (b
, temp
)
4046 if (b
->type
== bp_thread_event
)
4047 delete_breakpoint (b
);
4052 remove_solib_event_breakpoints (void)
4054 register struct breakpoint
*b
, *temp
;
4056 ALL_BREAKPOINTS_SAFE (b
, temp
)
4057 if (b
->type
== bp_shlib_event
)
4058 delete_breakpoint (b
);
4062 create_solib_event_breakpoint (CORE_ADDR address
)
4064 struct breakpoint
*b
;
4065 struct symtab_and_line sal
;
4067 INIT_SAL (&sal
); /* initialize to zeroes */
4069 sal
.section
= find_pc_overlay (sal
.pc
);
4070 b
= set_raw_breakpoint (sal
, bp_shlib_event
);
4071 b
->number
= internal_breakpoint_number
--;
4072 b
->disposition
= donttouch
;
4077 /* Disable any breakpoints that are on code in shared libraries. Only
4078 apply to enabled breakpoints, disabled ones can just stay disabled. */
4081 disable_breakpoints_in_shlibs (int silent
)
4083 struct breakpoint
*b
;
4084 int disabled_shlib_breaks
= 0;
4086 /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */
4089 #if defined (PC_SOLIB)
4090 if (((b
->type
== bp_breakpoint
) ||
4091 (b
->type
== bp_hardware_breakpoint
)) &&
4092 b
->enable
== enabled
&&
4094 PC_SOLIB (b
->address
))
4096 b
->enable
= shlib_disabled
;
4099 if (!disabled_shlib_breaks
)
4101 target_terminal_ours_for_output ();
4102 warning ("Temporarily disabling shared library breakpoints:");
4104 disabled_shlib_breaks
= 1;
4105 warning ("breakpoint #%d ", b
->number
);
4112 /* Try to reenable any breakpoints in shared libraries. */
4114 re_enable_breakpoints_in_shlibs (void)
4116 struct breakpoint
*b
;
4119 if (b
->enable
== shlib_disabled
)
4123 /* Do not reenable the breakpoint if the shared library
4124 is still not mapped in. */
4125 if (target_read_memory (b
->address
, buf
, 1) == 0)
4126 b
->enable
= enabled
;
4133 solib_load_unload_1 (char *hookname
, int tempflag
, char *dll_pathname
,
4134 char *cond_string
, enum bptype bp_kind
)
4136 struct breakpoint
*b
;
4137 struct symtabs_and_lines sals
;
4138 struct cleanup
*old_chain
;
4139 struct cleanup
*canonical_strings_chain
= NULL
;
4140 char *addr_start
= hookname
;
4141 char *addr_end
= NULL
;
4142 char **canonical
= (char **) NULL
;
4143 int thread
= -1; /* All threads. */
4145 /* Set a breakpoint on the specified hook. */
4146 sals
= decode_line_1 (&hookname
, 1, (struct symtab
*) NULL
, 0, &canonical
);
4147 addr_end
= hookname
;
4149 if (sals
.nelts
== 0)
4151 warning ("Unable to set a breakpoint on dynamic linker callback.");
4152 warning ("Suggest linking with /opt/langtools/lib/end.o.");
4153 warning ("GDB will be unable to track shl_load/shl_unload calls");
4156 if (sals
.nelts
!= 1)
4158 warning ("Unable to set unique breakpoint on dynamic linker callback.");
4159 warning ("GDB will be unable to track shl_load/shl_unload calls");
4163 /* Make sure that all storage allocated in decode_line_1 gets freed
4164 in case the following errors out. */
4165 old_chain
= make_cleanup (xfree
, sals
.sals
);
4166 if (canonical
!= (char **) NULL
)
4168 make_cleanup (xfree
, canonical
);
4169 canonical_strings_chain
= make_cleanup (null_cleanup
, 0);
4170 if (canonical
[0] != NULL
)
4171 make_cleanup (xfree
, canonical
[0]);
4174 resolve_sal_pc (&sals
.sals
[0]);
4176 /* Remove the canonical strings from the cleanup, they are needed below. */
4177 if (canonical
!= (char **) NULL
)
4178 discard_cleanups (canonical_strings_chain
);
4180 b
= set_raw_breakpoint (sals
.sals
[0], bp_kind
);
4181 set_breakpoint_count (breakpoint_count
+ 1);
4182 b
->number
= breakpoint_count
;
4184 b
->cond_string
= (cond_string
== NULL
) ?
4185 NULL
: savestring (cond_string
, strlen (cond_string
));
4188 if (canonical
!= (char **) NULL
&& canonical
[0] != NULL
)
4189 b
->addr_string
= canonical
[0];
4190 else if (addr_start
)
4191 b
->addr_string
= savestring (addr_start
, addr_end
- addr_start
);
4193 b
->enable
= enabled
;
4194 b
->disposition
= tempflag
? del
: donttouch
;
4196 if (dll_pathname
== NULL
)
4197 b
->dll_pathname
= NULL
;
4200 b
->dll_pathname
= (char *) xmalloc (strlen (dll_pathname
) + 1);
4201 strcpy (b
->dll_pathname
, dll_pathname
);
4205 do_cleanups (old_chain
);
4209 create_solib_load_event_breakpoint (char *hookname
, int tempflag
,
4210 char *dll_pathname
, char *cond_string
)
4212 solib_load_unload_1 (hookname
, tempflag
, dll_pathname
,
4213 cond_string
, bp_catch_load
);
4217 create_solib_unload_event_breakpoint (char *hookname
, int tempflag
,
4218 char *dll_pathname
, char *cond_string
)
4220 solib_load_unload_1 (hookname
,tempflag
, dll_pathname
,
4221 cond_string
, bp_catch_unload
);
4225 create_fork_vfork_event_catchpoint (int tempflag
, char *cond_string
,
4226 enum bptype bp_kind
)
4228 struct symtab_and_line sal
;
4229 struct breakpoint
*b
;
4230 int thread
= -1; /* All threads. */
4237 b
= set_raw_breakpoint (sal
, bp_kind
);
4238 set_breakpoint_count (breakpoint_count
+ 1);
4239 b
->number
= breakpoint_count
;
4241 b
->cond_string
= (cond_string
== NULL
) ?
4242 NULL
: savestring (cond_string
, strlen (cond_string
));
4244 b
->addr_string
= NULL
;
4245 b
->enable
= enabled
;
4246 b
->disposition
= tempflag
? del
: donttouch
;
4247 b
->forked_inferior_pid
= 0;
4253 create_fork_event_catchpoint (int tempflag
, char *cond_string
)
4255 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_fork
);
4259 create_vfork_event_catchpoint (int tempflag
, char *cond_string
)
4261 create_fork_vfork_event_catchpoint (tempflag
, cond_string
, bp_catch_vfork
);
4265 create_exec_event_catchpoint (int tempflag
, char *cond_string
)
4267 struct symtab_and_line sal
;
4268 struct breakpoint
*b
;
4269 int thread
= -1; /* All threads. */
4276 b
= set_raw_breakpoint (sal
, bp_catch_exec
);
4277 set_breakpoint_count (breakpoint_count
+ 1);
4278 b
->number
= breakpoint_count
;
4280 b
->cond_string
= (cond_string
== NULL
) ?
4281 NULL
: savestring (cond_string
, strlen (cond_string
));
4283 b
->addr_string
= NULL
;
4284 b
->enable
= enabled
;
4285 b
->disposition
= tempflag
? del
: donttouch
;
4291 hw_breakpoint_used_count (void)
4293 register struct breakpoint
*b
;
4298 if (b
->type
== bp_hardware_breakpoint
&& b
->enable
== enabled
)
4306 hw_watchpoint_used_count (enum bptype type
, int *other_type_used
)
4308 register struct breakpoint
*b
;
4311 *other_type_used
= 0;
4314 if (b
->enable
== enabled
)
4316 if (b
->type
== type
)
4318 else if ((b
->type
== bp_hardware_watchpoint
||
4319 b
->type
== bp_read_watchpoint
||
4320 b
->type
== bp_access_watchpoint
)
4321 && b
->enable
== enabled
)
4322 *other_type_used
= 1;
4328 /* Call this after hitting the longjmp() breakpoint. Use this to set
4329 a new breakpoint at the target of the jmp_buf.
4331 FIXME - This ought to be done by setting a temporary breakpoint
4332 that gets deleted automatically... */
4335 set_longjmp_resume_breakpoint (CORE_ADDR pc
, struct frame_info
*frame
)
4337 register struct breakpoint
*b
;
4340 if (b
->type
== bp_longjmp_resume
)
4343 b
->enable
= enabled
;
4345 b
->frame
= frame
->frame
;
4348 check_duplicates (b
);
4354 disable_watchpoints_before_interactive_call_start (void)
4356 struct breakpoint
*b
;
4360 if (((b
->type
== bp_watchpoint
)
4361 || (b
->type
== bp_hardware_watchpoint
)
4362 || (b
->type
== bp_read_watchpoint
)
4363 || (b
->type
== bp_access_watchpoint
)
4364 || ep_is_exception_catchpoint (b
))
4365 && (b
->enable
== enabled
))
4367 b
->enable
= call_disabled
;
4368 check_duplicates (b
);
4374 enable_watchpoints_after_interactive_call_stop (void)
4376 struct breakpoint
*b
;
4380 if (((b
->type
== bp_watchpoint
)
4381 || (b
->type
== bp_hardware_watchpoint
)
4382 || (b
->type
== bp_read_watchpoint
)
4383 || (b
->type
== bp_access_watchpoint
)
4384 || ep_is_exception_catchpoint (b
))
4385 && (b
->enable
== call_disabled
))
4387 b
->enable
= enabled
;
4388 check_duplicates (b
);
4394 /* Set a breakpoint that will evaporate an end of command
4395 at address specified by SAL.
4396 Restrict it to frame FRAME if FRAME is nonzero. */
4399 set_momentary_breakpoint (struct symtab_and_line sal
, struct frame_info
*frame
,
4402 register struct breakpoint
*b
;
4403 b
= set_raw_breakpoint (sal
, type
);
4404 b
->enable
= enabled
;
4405 b
->disposition
= donttouch
;
4406 b
->frame
= (frame
? frame
->frame
: 0);
4408 /* If we're debugging a multi-threaded program, then we
4409 want momentary breakpoints to be active in only a
4410 single thread of control. */
4411 if (in_thread_list (inferior_ptid
))
4412 b
->thread
= pid_to_thread_id (inferior_ptid
);
4418 /* Tell the user we have just set a breakpoint B. */
4421 mention (struct breakpoint
*b
)
4425 struct cleanup
*old_chain
;
4426 struct ui_stream
*stb
;
4428 stb
= ui_out_stream_new (uiout
);
4429 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
4432 /* FIXME: This is misplaced; mention() is called by things (like hitting a
4433 watchpoint) other than breakpoint creation. It should be possible to
4434 clean this up and at the same time replace the random calls to
4435 breakpoint_changed with this hook, as has already been done for
4436 delete_breakpoint_hook and so on. */
4437 if (create_breakpoint_hook
)
4438 create_breakpoint_hook (b
);
4439 breakpoint_create_event (b
->number
);
4444 printf_filtered ("(apparently deleted?) Eventpoint %d: ", b
->number
);
4448 ui_out_text (uiout
, "Watchpoint ");
4449 ui_out_tuple_begin (uiout
, "wpt");
4450 ui_out_field_int (uiout
, "number", b
->number
);
4451 ui_out_text (uiout
, ": ");
4452 print_expression (b
->exp
, stb
->stream
);
4453 ui_out_field_stream (uiout
, "exp", stb
);
4454 ui_out_tuple_end (uiout
);
4456 case bp_hardware_watchpoint
:
4457 ui_out_text (uiout
, "Hardware watchpoint ");
4458 ui_out_tuple_begin (uiout
, "wpt");
4459 ui_out_field_int (uiout
, "number", b
->number
);
4460 ui_out_text (uiout
, ": ");
4461 print_expression (b
->exp
, stb
->stream
);
4462 ui_out_field_stream (uiout
, "exp", stb
);
4463 ui_out_tuple_end (uiout
);
4467 printf_filtered ("Watchpoint %d: ", b
->number
);
4468 print_expression (b
->exp
, gdb_stdout
);
4470 case bp_hardware_watchpoint
:
4471 printf_filtered ("Hardware watchpoint %d: ", b
->number
);
4472 print_expression (b
->exp
, gdb_stdout
);
4476 case bp_read_watchpoint
:
4477 ui_out_text (uiout
, "Hardware read watchpoint ");
4478 ui_out_tuple_begin (uiout
, "hw-rwpt");
4479 ui_out_field_int (uiout
, "number", b
->number
);
4480 ui_out_text (uiout
, ": ");
4481 print_expression (b
->exp
, stb
->stream
);
4482 ui_out_field_stream (uiout
, "exp", stb
);
4483 ui_out_tuple_end (uiout
);
4485 case bp_access_watchpoint
:
4486 ui_out_text (uiout
, "Hardware access (read/write) watchpoint ");
4487 ui_out_tuple_begin (uiout
, "hw-awpt");
4488 ui_out_field_int (uiout
, "number", b
->number
);
4489 ui_out_text (uiout
, ": ");
4490 print_expression (b
->exp
, stb
->stream
);
4491 ui_out_field_stream (uiout
, "exp", stb
);
4492 ui_out_tuple_end (uiout
);
4495 case bp_read_watchpoint
:
4496 printf_filtered ("Hardware read watchpoint %d: ", b
->number
);
4497 print_expression (b
->exp
, gdb_stdout
);
4499 case bp_access_watchpoint
:
4500 printf_filtered ("Hardware access (read/write) watchpoint %d: ",
4502 print_expression (b
->exp
, gdb_stdout
);
4507 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
4513 printf_filtered ("Breakpoint %d", b
->number
);
4516 case bp_hardware_breakpoint
:
4518 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
4524 printf_filtered ("Hardware assisted breakpoint %d", b
->number
);
4528 case bp_catch_unload
:
4529 printf_filtered ("Catchpoint %d (%s %s)",
4531 (b
->type
== bp_catch_load
) ? "load" : "unload",
4532 (b
->dll_pathname
!= NULL
) ?
4533 b
->dll_pathname
: "<any library>");
4536 case bp_catch_vfork
:
4537 printf_filtered ("Catchpoint %d (%s)",
4539 (b
->type
== bp_catch_fork
) ? "fork" : "vfork");
4542 printf_filtered ("Catchpoint %d (exec)",
4545 case bp_catch_catch
:
4546 case bp_catch_throw
:
4547 printf_filtered ("Catchpoint %d (%s)",
4549 (b
->type
== bp_catch_catch
) ? "catch" : "throw");
4555 case bp_longjmp_resume
:
4556 case bp_step_resume
:
4557 case bp_through_sigtramp
:
4559 case bp_watchpoint_scope
:
4560 case bp_shlib_event
:
4561 case bp_thread_event
:
4566 if (addressprint
|| b
->source_file
== NULL
)
4568 printf_filtered (" at ");
4569 print_address_numeric (b
->address
, 1, gdb_stdout
);
4572 printf_filtered (": file %s, line %d.",
4573 b
->source_file
, b
->line_number
);
4574 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, b
, 1));
4575 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
4578 do_cleanups (old_chain
);
4581 if (interpreter_p
&& strncmp (interpreter_p
, "mi", 2) == 0)
4584 printf_filtered ("\n");
4588 /* Add SALS.nelts breakpoints to the breakpoint table. For each
4589 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i],
4590 COND[i] and COND_STRING[i] values.
4592 NOTE: If the function succeeds, the caller is expected to cleanup
4593 the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the
4594 array contents). If the function fails (error() is called), the
4595 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
4596 COND and SALS arrays and each of those arrays contents. */
4599 create_breakpoints (struct symtabs_and_lines sals
, char **addr_string
,
4600 struct expression
**cond
, char **cond_string
,
4601 enum bptype type
, enum bpdisp disposition
,
4602 int thread
, int ignore_count
, int from_tty
)
4604 if (type
== bp_hardware_breakpoint
)
4606 int i
= hw_breakpoint_used_count ();
4607 int target_resources_ok
=
4608 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
4610 if (target_resources_ok
== 0)
4611 error ("No hardware breakpoint support in the target.");
4612 else if (target_resources_ok
< 0)
4613 error ("Hardware breakpoints used exceeds limit.");
4616 /* Now set all the breakpoints. */
4619 for (i
= 0; i
< sals
.nelts
; i
++)
4621 struct breakpoint
*b
;
4622 struct symtab_and_line sal
= sals
.sals
[i
];
4625 describe_other_breakpoints (sal
.pc
, sal
.section
);
4627 b
= set_raw_breakpoint (sal
, type
);
4628 set_breakpoint_count (breakpoint_count
+ 1);
4629 b
->number
= breakpoint_count
;
4632 b
->addr_string
= addr_string
[i
];
4633 b
->cond_string
= cond_string
[i
];
4634 b
->ignore_count
= ignore_count
;
4635 b
->enable
= enabled
;
4636 b
->disposition
= disposition
;
4642 /* Parse ARG which is assumed to be a SAL specification possibly
4643 followed by conditionals. On return, SALS contains an array of SAL
4644 addresses found. ADDR_STRING contains a vector of (canonical)
4645 address strings. ARG points to the end of the SAL. */
4648 parse_breakpoint_sals (char **address
,
4649 struct symtabs_and_lines
*sals
,
4650 char ***addr_string
)
4652 char *addr_start
= *address
;
4653 *addr_string
= NULL
;
4654 /* If no arg given, or if first arg is 'if ', use the default
4656 if ((*address
) == NULL
4657 || (strncmp ((*address
), "if", 2) == 0 && isspace ((*address
)[2])))
4659 if (default_breakpoint_valid
)
4661 struct symtab_and_line sal
;
4662 INIT_SAL (&sal
); /* initialize to zeroes */
4663 sals
->sals
= (struct symtab_and_line
*)
4664 xmalloc (sizeof (struct symtab_and_line
));
4665 sal
.pc
= default_breakpoint_address
;
4666 sal
.line
= default_breakpoint_line
;
4667 sal
.symtab
= default_breakpoint_symtab
;
4668 sal
.section
= find_pc_overlay (sal
.pc
);
4669 sals
->sals
[0] = sal
;
4673 error ("No default breakpoint address now.");
4677 /* Force almost all breakpoints to be in terms of the
4678 current_source_symtab (which is decode_line_1's default). This
4679 should produce the results we want almost all of the time while
4680 leaving default_breakpoint_* alone. */
4681 if (default_breakpoint_valid
4682 && (!current_source_symtab
4683 || (strchr ("+-", (*address
)[0]) != NULL
)))
4684 *sals
= decode_line_1 (address
, 1, default_breakpoint_symtab
,
4685 default_breakpoint_line
, addr_string
);
4687 *sals
= decode_line_1 (address
, 1, (struct symtab
*) NULL
, 0, addr_string
);
4689 /* For any SAL that didn't have a canonical string, fill one in. */
4690 if (sals
->nelts
> 0 && *addr_string
== NULL
)
4691 *addr_string
= xcalloc (sals
->nelts
, sizeof (char **));
4692 if (addr_start
!= (*address
))
4695 for (i
= 0; i
< sals
->nelts
; i
++)
4697 /* Add the string if not present. */
4698 if ((*addr_string
)[i
] == NULL
)
4699 (*addr_string
)[i
] = savestring (addr_start
, (*address
) - addr_start
);
4705 /* Convert each SAL into a real PC. Verify that the PC can be
4706 inserted as a breakpoint. If it can't throw an error. */
4709 breakpoint_sals_to_pc (struct symtabs_and_lines
*sals
,
4713 for (i
= 0; i
< sals
->nelts
; i
++)
4715 resolve_sal_pc (&sals
->sals
[i
]);
4717 /* It's possible for the PC to be nonzero, but still an illegal
4718 value on some targets.
4720 For example, on HP-UX if you start gdb, and before running the
4721 inferior you try to set a breakpoint on a shared library function
4722 "foo" where the inferior doesn't call "foo" directly but does
4723 pass its address to another function call, then we do find a
4724 minimal symbol for the "foo", but it's address is invalid.
4725 (Appears to be an index into a table that the loader sets up
4726 when the inferior is run.)
4728 Give the target a chance to bless sals.sals[i].pc before we
4729 try to make a breakpoint for it. */
4730 if (PC_REQUIRES_RUN_BEFORE_USE (sals
->sals
[i
].pc
))
4732 if (address
== NULL
)
4733 error ("Cannot break without a running program.");
4735 error ("Cannot break on %s without a running program.",
4741 /* Set a breakpoint according to ARG (function, linenum or *address)
4742 flag: first bit : 0 non-temporary, 1 temporary.
4743 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
4746 break_command_1 (char *arg
, int flag
, int from_tty
)
4748 int tempflag
, hardwareflag
;
4749 struct symtabs_and_lines sals
;
4750 register struct expression
**cond
= 0;
4751 /* Pointers in arg to the start, and one past the end, of the
4753 char **cond_string
= (char **) NULL
;
4754 char *addr_start
= arg
;
4756 struct cleanup
*old_chain
;
4757 struct cleanup
*breakpoint_chain
= NULL
;
4760 int ignore_count
= 0;
4762 hardwareflag
= flag
& BP_HARDWAREFLAG
;
4763 tempflag
= flag
& BP_TEMPFLAG
;
4768 parse_breakpoint_sals (&arg
, &sals
, &addr_string
);
4773 /* Create a chain of things that always need to be cleaned up. */
4774 old_chain
= make_cleanup (null_cleanup
, 0);
4776 /* Make sure that all storage allocated to SALS gets freed. */
4777 make_cleanup (xfree
, sals
.sals
);
4779 /* Cleanup the addr_string array but not its contents. */
4780 make_cleanup (xfree
, addr_string
);
4782 /* Allocate space for all the cond expressions. */
4783 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4784 make_cleanup (xfree
, cond
);
4786 /* Allocate space for all the cond strings. */
4787 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4788 make_cleanup (xfree
, cond_string
);
4790 /* ----------------------------- SNIP -----------------------------
4791 Anything added to the cleanup chain beyond this point is assumed
4792 to be part of a breakpoint. If the breakpoint create succeeds
4793 then the memory is not reclaimed. */
4794 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4796 /* Mark the contents of the addr_string for cleanup. These go on
4797 the breakpoint_chain and only occure if the breakpoint create
4799 for (i
= 0; i
< sals
.nelts
; i
++)
4801 if (addr_string
[i
] != NULL
)
4802 make_cleanup (xfree
, addr_string
[i
]);
4805 /* Resolve all line numbers to PC's and verify that the addresses
4806 are ok for the target. */
4807 breakpoint_sals_to_pc (&sals
, addr_start
);
4809 /* Verify that condition can be parsed, before setting any
4810 breakpoints. Allocate a separate condition expression for each
4812 thread
= -1; /* No specific thread yet */
4813 for (i
= 0; i
< sals
.nelts
; i
++)
4820 char *cond_start
= NULL
;
4821 char *cond_end
= NULL
;
4822 while (*tok
== ' ' || *tok
== '\t')
4827 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
4830 toklen
= end_tok
- tok
;
4832 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
4834 tok
= cond_start
= end_tok
+ 1;
4835 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4836 make_cleanup (xfree
, cond
[i
]);
4838 cond_string
[i
] = savestring (cond_start
, cond_end
- cond_start
);
4839 make_cleanup (xfree
, cond_string
[i
]);
4841 else if (toklen
>= 1 && strncmp (tok
, "thread", toklen
) == 0)
4847 thread
= strtol (tok
, &tok
, 0);
4849 error ("Junk after thread keyword.");
4850 if (!valid_thread_id (thread
))
4851 error ("Unknown thread %d\n", thread
);
4854 error ("Junk at end of arguments.");
4858 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4859 hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4860 tempflag
? del
: donttouch
,
4861 thread
, ignore_count
, from_tty
);
4865 warning ("Multiple breakpoints were set.");
4866 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
4868 /* That's it. Discard the cleanups for data inserted into the
4870 discard_cleanups (breakpoint_chain
);
4871 /* But cleanup everything else. */
4872 do_cleanups (old_chain
);
4875 /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function,
4876 linenum or *address) with COND and IGNORE_COUNT. */
4878 struct captured_breakpoint_args
4889 do_captured_breakpoint (void *data
)
4891 struct captured_breakpoint_args
*args
= data
;
4892 struct symtabs_and_lines sals
;
4893 register struct expression
**cond
;
4894 struct cleanup
*old_chain
;
4895 struct cleanup
*breakpoint_chain
= NULL
;
4902 /* Parse the source and lines spec. Delay check that the expression
4903 didn't contain trailing garbage until after cleanups are in
4907 address_end
= args
->address
;
4909 parse_breakpoint_sals (&address_end
, &sals
, &addr_string
);
4914 /* Create a chain of things at always need to be cleaned up. */
4915 old_chain
= make_cleanup (null_cleanup
, 0);
4917 /* Always have a addr_string array, even if it is empty. */
4918 make_cleanup (xfree
, addr_string
);
4920 /* Make sure that all storage allocated to SALS gets freed. */
4921 make_cleanup (xfree
, sals
.sals
);
4923 /* Allocate space for all the cond expressions. */
4924 cond
= xcalloc (sals
.nelts
, sizeof (struct expression
*));
4925 make_cleanup (xfree
, cond
);
4927 /* Allocate space for all the cond strings. */
4928 cond_string
= xcalloc (sals
.nelts
, sizeof (char **));
4929 make_cleanup (xfree
, cond_string
);
4931 /* ----------------------------- SNIP -----------------------------
4932 Anything added to the cleanup chain beyond this point is assumed
4933 to be part of a breakpoint. If the breakpoint create goes
4934 through then that memory is not cleaned up. */
4935 breakpoint_chain
= make_cleanup (null_cleanup
, 0);
4937 /* Mark the contents of the addr_string for cleanup. These go on
4938 the breakpoint_chain and only occure if the breakpoint create
4940 for (i
= 0; i
< sals
.nelts
; i
++)
4942 if (addr_string
[i
] != NULL
)
4943 make_cleanup (xfree
, addr_string
[i
]);
4946 /* Wait until now before checking for garbage at the end of the
4947 address. That way cleanups can take care of freeing any
4949 if (*address_end
!= '\0')
4950 error ("Garbage %s following breakpoint address", address_end
);
4952 /* Resolve all line numbers to PC's. */
4953 breakpoint_sals_to_pc (&sals
, args
->address
);
4955 /* Verify that conditions can be parsed, before setting any
4957 for (i
= 0; i
< sals
.nelts
; i
++)
4959 if (args
->condition
!= NULL
)
4961 char *tok
= args
->condition
;
4962 cond
[i
] = parse_exp_1 (&tok
, block_for_pc (sals
.sals
[i
].pc
), 0);
4964 error ("Garbage %s follows condition", tok
);
4965 make_cleanup (xfree
, cond
[i
]);
4966 cond_string
[i
] = xstrdup (args
->condition
);
4970 create_breakpoints (sals
, addr_string
, cond
, cond_string
,
4971 args
->hardwareflag
? bp_hardware_breakpoint
: bp_breakpoint
,
4972 args
->tempflag
? del
: donttouch
,
4973 args
->thread
, args
->ignore_count
, 0/*from-tty*/);
4975 /* That's it. Discard the cleanups for data inserted into the
4977 discard_cleanups (breakpoint_chain
);
4978 /* But cleanup everything else. */
4979 do_cleanups (old_chain
);
4984 gdb_breakpoint (char *address
, char *condition
,
4985 int hardwareflag
, int tempflag
,
4986 int thread
, int ignore_count
)
4988 struct captured_breakpoint_args args
;
4989 args
.address
= address
;
4990 args
.condition
= condition
;
4991 args
.hardwareflag
= hardwareflag
;
4992 args
.tempflag
= tempflag
;
4993 args
.thread
= thread
;
4994 args
.ignore_count
= ignore_count
;
4995 return catch_errors (do_captured_breakpoint
, &args
,
4996 NULL
, RETURN_MASK_ALL
);
5001 break_at_finish_at_depth_command_1 (char *arg
, int flag
, int from_tty
)
5003 struct frame_info
*frame
;
5004 CORE_ADDR low
, high
, selected_pc
= 0;
5005 char *extra_args
= NULL
;
5008 int extra_args_len
= 0, if_arg
= 0;
5011 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5014 if (default_breakpoint_valid
)
5018 selected_pc
= selected_frame
->pc
;
5023 error ("No selected frame.");
5026 error ("No default breakpoint address now.");
5030 extra_args
= strchr (arg
, ' ');
5034 extra_args_len
= strlen (extra_args
);
5035 level_arg
= (char *) xmalloc (extra_args
- arg
);
5036 strncpy (level_arg
, arg
, extra_args
- arg
- 1);
5037 level_arg
[extra_args
- arg
- 1] = '\0';
5041 level_arg
= (char *) xmalloc (strlen (arg
) + 1);
5042 strcpy (level_arg
, arg
);
5045 frame
= parse_frame_specification (level_arg
);
5047 selected_pc
= frame
->pc
;
5054 extra_args_len
= strlen (arg
);
5059 if (find_pc_partial_function (selected_pc
, (char **) NULL
, &low
, &high
))
5061 addr_string
= (char *) xmalloc (26 + extra_args_len
);
5063 sprintf (addr_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
5065 sprintf (addr_string
, "*0x%s", paddr_nz (high
));
5066 break_command_1 (addr_string
, flag
, from_tty
);
5067 xfree (addr_string
);
5070 error ("No function contains the specified address");
5073 error ("Unable to set breakpoint at procedure exit");
5078 break_at_finish_command_1 (char *arg
, int flag
, int from_tty
)
5080 char *addr_string
, *break_string
, *beg_addr_string
;
5081 CORE_ADDR low
, high
;
5082 struct symtabs_and_lines sals
;
5083 struct symtab_and_line sal
;
5084 struct cleanup
*old_chain
;
5085 char *extra_args
= NULL
;
5086 int extra_args_len
= 0;
5090 (arg
[0] == 'i' && arg
[1] == 'f' && (arg
[2] == ' ' || arg
[2] == '\t')))
5092 if (default_breakpoint_valid
)
5096 addr_string
= (char *) xmalloc (15);
5097 sprintf (addr_string
, "*0x%s", paddr_nz (selected_frame
->pc
));
5102 error ("No selected frame.");
5105 error ("No default breakpoint address now.");
5109 addr_string
= (char *) xmalloc (strlen (arg
) + 1);
5110 strcpy (addr_string
, arg
);
5116 extra_args_len
= strlen (arg
);
5120 /* get the stuff after the function name or address */
5121 extra_args
= strchr (arg
, ' ');
5125 extra_args_len
= strlen (extra_args
);
5132 beg_addr_string
= addr_string
;
5133 sals
= decode_line_1 (&addr_string
, 1, (struct symtab
*) NULL
, 0,
5136 xfree (beg_addr_string
);
5137 old_chain
= make_cleanup (xfree
, sals
.sals
);
5138 for (i
= 0; (i
< sals
.nelts
); i
++)
5141 if (find_pc_partial_function (sal
.pc
, (char **) NULL
, &low
, &high
))
5143 break_string
= (char *) xmalloc (extra_args_len
+ 26);
5145 sprintf (break_string
, "*0x%s %s", paddr_nz (high
), extra_args
);
5147 sprintf (break_string
, "*0x%s", paddr_nz (high
));
5148 break_command_1 (break_string
, flag
, from_tty
);
5149 xfree (break_string
);
5152 error ("No function contains the specified address");
5156 warning ("Multiple breakpoints were set.\n");
5157 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
5159 do_cleanups (old_chain
);
5163 /* Helper function for break_command_1 and disassemble_command. */
5166 resolve_sal_pc (struct symtab_and_line
*sal
)
5170 if (sal
->pc
== 0 && sal
->symtab
!= NULL
)
5172 if (!find_line_pc (sal
->symtab
, sal
->line
, &pc
))
5173 error ("No line %d in file \"%s\".",
5174 sal
->line
, sal
->symtab
->filename
);
5178 if (sal
->section
== 0 && sal
->symtab
!= NULL
)
5180 struct blockvector
*bv
;
5185 bv
= blockvector_for_pc_sect (sal
->pc
, 0, &index
, sal
->symtab
);
5188 b
= BLOCKVECTOR_BLOCK (bv
, index
);
5189 sym
= block_function (b
);
5192 fixup_symbol_section (sym
, sal
->symtab
->objfile
);
5193 sal
->section
= SYMBOL_BFD_SECTION (sym
);
5197 /* It really is worthwhile to have the section, so we'll just
5198 have to look harder. This case can be executed if we have
5199 line numbers but no functions (as can happen in assembly
5202 struct minimal_symbol
*msym
;
5204 msym
= lookup_minimal_symbol_by_pc (sal
->pc
);
5206 sal
->section
= SYMBOL_BFD_SECTION (msym
);
5213 break_command (char *arg
, int from_tty
)
5215 break_command_1 (arg
, 0, from_tty
);
5219 break_at_finish_command (char *arg
, int from_tty
)
5221 break_at_finish_command_1 (arg
, 0, from_tty
);
5225 break_at_finish_at_depth_command (char *arg
, int from_tty
)
5227 break_at_finish_at_depth_command_1 (arg
, 0, from_tty
);
5231 tbreak_command (char *arg
, int from_tty
)
5233 break_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5237 tbreak_at_finish_command (char *arg
, int from_tty
)
5239 break_at_finish_command_1 (arg
, BP_TEMPFLAG
, from_tty
);
5243 hbreak_command (char *arg
, int from_tty
)
5245 break_command_1 (arg
, BP_HARDWAREFLAG
, from_tty
);
5249 thbreak_command (char *arg
, int from_tty
)
5251 break_command_1 (arg
, (BP_TEMPFLAG
| BP_HARDWAREFLAG
), from_tty
);
5255 stop_command (char *arg
, int from_tty
)
5257 printf_filtered ("Specify the type of breakpoint to set.\n\
5258 Usage: stop in <function | address>\n\
5263 stopin_command (char *arg
, int from_tty
)
5267 if (arg
== (char *) NULL
)
5269 else if (*arg
!= '*')
5274 /* look for a ':'. If this is a line number specification, then
5275 say it is bad, otherwise, it should be an address or
5276 function/method name */
5277 while (*argptr
&& !hasColon
)
5279 hasColon
= (*argptr
== ':');
5284 badInput
= (*argptr
!= ':'); /* Not a class::method */
5286 badInput
= isdigit (*arg
); /* a simple line number */
5290 printf_filtered ("Usage: stop in <function | address>\n");
5292 break_command_1 (arg
, 0, from_tty
);
5296 stopat_command (char *arg
, int from_tty
)
5300 if (arg
== (char *) NULL
|| *arg
== '*') /* no line number */
5307 /* look for a ':'. If there is a '::' then get out, otherwise
5308 it is probably a line number. */
5309 while (*argptr
&& !hasColon
)
5311 hasColon
= (*argptr
== ':');
5316 badInput
= (*argptr
== ':'); /* we have class::method */
5318 badInput
= !isdigit (*arg
); /* not a line number */
5322 printf_filtered ("Usage: stop at <line>\n");
5324 break_command_1 (arg
, 0, from_tty
);
5328 /* accessflag: hw_write: watch write,
5329 hw_read: watch read,
5330 hw_access: watch access (read or write) */
5332 watch_command_1 (char *arg
, int accessflag
, int from_tty
)
5334 struct breakpoint
*b
;
5335 struct symtab_and_line sal
;
5336 struct expression
*exp
;
5337 struct block
*exp_valid_block
;
5338 struct value
*val
, *mark
;
5339 struct frame_info
*frame
;
5340 struct frame_info
*prev_frame
= NULL
;
5341 char *exp_start
= NULL
;
5342 char *exp_end
= NULL
;
5343 char *tok
, *end_tok
;
5345 char *cond_start
= NULL
;
5346 char *cond_end
= NULL
;
5347 struct expression
*cond
= NULL
;
5348 int i
, other_type_used
, target_resources_ok
= 0;
5349 enum bptype bp_type
;
5352 INIT_SAL (&sal
); /* initialize to zeroes */
5354 /* Parse arguments. */
5355 innermost_block
= NULL
;
5357 exp
= parse_exp_1 (&arg
, 0, 0);
5359 exp_valid_block
= innermost_block
;
5360 mark
= value_mark ();
5361 val
= evaluate_expression (exp
);
5362 release_value (val
);
5363 if (VALUE_LAZY (val
))
5364 value_fetch_lazy (val
);
5367 while (*tok
== ' ' || *tok
== '\t')
5371 while (*end_tok
!= ' ' && *end_tok
!= '\t' && *end_tok
!= '\000')
5374 toklen
= end_tok
- tok
;
5375 if (toklen
>= 1 && strncmp (tok
, "if", toklen
) == 0)
5377 tok
= cond_start
= end_tok
+ 1;
5378 cond
= parse_exp_1 (&tok
, 0, 0);
5382 error ("Junk at end of command.");
5384 if (accessflag
== hw_read
)
5385 bp_type
= bp_read_watchpoint
;
5386 else if (accessflag
== hw_access
)
5387 bp_type
= bp_access_watchpoint
;
5389 bp_type
= bp_hardware_watchpoint
;
5391 mem_cnt
= can_use_hardware_watchpoint (val
);
5392 if (mem_cnt
== 0 && bp_type
!= bp_hardware_watchpoint
)
5393 error ("Expression cannot be implemented with read/access watchpoint.");
5396 i
= hw_watchpoint_used_count (bp_type
, &other_type_used
);
5397 target_resources_ok
=
5398 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type
, i
+ mem_cnt
,
5400 if (target_resources_ok
== 0 && bp_type
!= bp_hardware_watchpoint
)
5401 error ("Target does not support this type of hardware watchpoint.");
5403 if (target_resources_ok
< 0 && bp_type
!= bp_hardware_watchpoint
)
5404 error ("Target can only support one kind of HW watchpoint at a time.");
5407 #if defined(HPUXHPPA)
5408 /* On HP-UX if you set a h/w
5409 watchpoint before the "run" command, the inferior dies with a e.g.,
5410 SIGILL once you start it. I initially believed this was due to a
5411 bad interaction between page protection traps and the initial
5412 startup sequence by the dynamic linker.
5414 However, I tried avoiding that by having HP-UX's implementation of
5415 TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid
5416 yet, which forced slow watches before a "run" or "attach", and it
5417 still fails somewhere in the startup code.
5419 Until I figure out what's happening, I'm disallowing watches altogether
5420 before the "run" or "attach" command. We'll tell the user they must
5421 set watches after getting the program started. */
5422 if (!target_has_execution
)
5424 warning ("can't do that without a running program; try \"break main\", \"run\" first");
5427 #endif /* HPUXHPPA */
5429 /* Change the type of breakpoint to an ordinary watchpoint if a hardware
5430 watchpoint could not be set. */
5431 if (!mem_cnt
|| target_resources_ok
<= 0)
5432 bp_type
= bp_watchpoint
;
5434 /* Now set up the breakpoint. */
5435 b
= set_raw_breakpoint (sal
, bp_type
);
5436 set_breakpoint_count (breakpoint_count
+ 1);
5437 b
->number
= breakpoint_count
;
5438 b
->disposition
= donttouch
;
5440 b
->exp_valid_block
= exp_valid_block
;
5441 b
->exp_string
= savestring (exp_start
, exp_end
- exp_start
);
5445 b
->cond_string
= savestring (cond_start
, cond_end
- cond_start
);
5449 frame
= block_innermost_frame (exp_valid_block
);
5452 prev_frame
= get_prev_frame (frame
);
5453 b
->watchpoint_frame
= frame
->frame
;
5456 b
->watchpoint_frame
= (CORE_ADDR
) 0;
5458 /* If the expression is "local", then set up a "watchpoint scope"
5459 breakpoint at the point where we've left the scope of the watchpoint
5461 if (innermost_block
)
5465 struct breakpoint
*scope_breakpoint
;
5466 struct symtab_and_line scope_sal
;
5468 INIT_SAL (&scope_sal
); /* initialize to zeroes */
5469 scope_sal
.pc
= get_frame_pc (prev_frame
);
5470 scope_sal
.section
= find_pc_overlay (scope_sal
.pc
);
5472 scope_breakpoint
= set_raw_breakpoint (scope_sal
,
5473 bp_watchpoint_scope
);
5474 set_breakpoint_count (breakpoint_count
+ 1);
5475 scope_breakpoint
->number
= breakpoint_count
;
5477 scope_breakpoint
->enable
= enabled
;
5479 /* Automatically delete the breakpoint when it hits. */
5480 scope_breakpoint
->disposition
= del
;
5482 /* Only break in the proper frame (help with recursion). */
5483 scope_breakpoint
->frame
= prev_frame
->frame
;
5485 /* Set the address at which we will stop. */
5486 scope_breakpoint
->address
= get_frame_pc (prev_frame
);
5488 /* The scope breakpoint is related to the watchpoint. We
5489 will need to act on them together. */
5490 b
->related_breakpoint
= scope_breakpoint
;
5493 value_free_to_mark (mark
);
5497 /* Return count of locations need to be watched and can be handled
5498 in hardware. If the watchpoint can not be handled
5499 in hardware return zero. */
5501 #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT)
5502 #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \
5503 ((BYTE_SIZE) <= (REGISTER_SIZE))
5506 #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT)
5507 #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \
5508 (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN))
5512 can_use_hardware_watchpoint (struct value
*v
)
5514 int found_memory_cnt
= 0;
5515 struct value
*head
= v
;
5517 /* Did the user specifically forbid us to use hardware watchpoints? */
5518 if (!can_use_hw_watchpoints
)
5521 /* Make sure that the value of the expression depends only upon
5522 memory contents, and values computed from them within GDB. If we
5523 find any register references or function calls, we can't use a
5524 hardware watchpoint.
5526 The idea here is that evaluating an expression generates a series
5527 of values, one holding the value of every subexpression. (The
5528 expression a*b+c has five subexpressions: a, b, a*b, c, and
5529 a*b+c.) GDB's values hold almost enough information to establish
5530 the criteria given above --- they identify memory lvalues,
5531 register lvalues, computed values, etcetera. So we can evaluate
5532 the expression, and then scan the chain of values that leaves
5533 behind to decide whether we can detect any possible change to the
5534 expression's final value using only hardware watchpoints.
5536 However, I don't think that the values returned by inferior
5537 function calls are special in any way. So this function may not
5538 notice that an expression involving an inferior function call
5539 can't be watched with hardware watchpoints. FIXME. */
5540 for (; v
; v
= v
->next
)
5542 if (VALUE_LVAL (v
) == lval_memory
)
5545 /* A lazy memory lvalue is one that GDB never needed to fetch;
5546 we either just used its address (e.g., `a' in `a.b') or
5547 we never needed it at all (e.g., `a' in `a,b'). */
5551 /* Ahh, memory we actually used! Check if we can cover
5552 it with hardware watchpoints. */
5553 struct type
*vtype
= check_typedef (VALUE_TYPE (v
));
5555 /* We only watch structs and arrays if user asked for it
5556 explicitly, never if they just happen to appear in a
5557 middle of some value chain. */
5559 || (TYPE_CODE (vtype
) != TYPE_CODE_STRUCT
5560 && TYPE_CODE (vtype
) != TYPE_CODE_ARRAY
))
5562 CORE_ADDR vaddr
= VALUE_ADDRESS (v
) + VALUE_OFFSET (v
);
5563 int len
= TYPE_LENGTH (VALUE_TYPE (v
));
5565 if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr
, len
))
5572 else if (v
->lval
!= not_lval
&& v
->modifiable
== 0)
5573 return 0; /* ??? What does this represent? */
5574 else if (v
->lval
== lval_register
)
5575 return 0; /* cannot watch a register with a HW watchpoint */
5578 /* The expression itself looks suitable for using a hardware
5579 watchpoint, but give the target machine a chance to reject it. */
5580 return found_memory_cnt
;
5585 watch_command_wrapper (char *arg
, int from_tty
)
5587 watch_command (arg
, from_tty
);
5591 watch_command (char *arg
, int from_tty
)
5593 watch_command_1 (arg
, hw_write
, from_tty
);
5598 rwatch_command_wrapper (char *arg
, int from_tty
)
5600 rwatch_command (arg
, from_tty
);
5604 rwatch_command (char *arg
, int from_tty
)
5606 watch_command_1 (arg
, hw_read
, from_tty
);
5611 awatch_command_wrapper (char *arg
, int from_tty
)
5613 awatch_command (arg
, from_tty
);
5617 awatch_command (char *arg
, int from_tty
)
5619 watch_command_1 (arg
, hw_access
, from_tty
);
5623 /* Helper routines for the until_command routine in infcmd.c. Here
5624 because it uses the mechanisms of breakpoints. */
5626 /* This function is called by fetch_inferior_event via the
5627 cmd_continuation pointer, to complete the until command. It takes
5628 care of cleaning up the temporary breakpoints set up by the until
5631 until_break_command_continuation (struct continuation_arg
*arg
)
5633 struct cleanup
*cleanups
;
5635 cleanups
= (struct cleanup
*) arg
->data
.pointer
;
5636 do_exec_cleanups (cleanups
);
5641 until_break_command (char *arg
, int from_tty
)
5643 struct symtabs_and_lines sals
;
5644 struct symtab_and_line sal
;
5645 struct frame_info
*prev_frame
= get_prev_frame (selected_frame
);
5646 struct breakpoint
*breakpoint
;
5647 struct cleanup
*old_chain
;
5648 struct continuation_arg
*arg1
;
5651 clear_proceed_status ();
5653 /* Set a breakpoint where the user wants it and at return from
5656 if (default_breakpoint_valid
)
5657 sals
= decode_line_1 (&arg
, 1, default_breakpoint_symtab
,
5658 default_breakpoint_line
, (char ***) NULL
);
5660 sals
= decode_line_1 (&arg
, 1, (struct symtab
*) NULL
,
5661 0, (char ***) NULL
);
5663 if (sals
.nelts
!= 1)
5664 error ("Couldn't get information on specified line.");
5667 xfree (sals
.sals
); /* malloc'd, so freed */
5670 error ("Junk at end of arguments.");
5672 resolve_sal_pc (&sal
);
5674 breakpoint
= set_momentary_breakpoint (sal
, selected_frame
, bp_until
);
5676 if (!event_loop_p
|| !target_can_async_p ())
5677 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
5679 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
5681 /* If we are running asynchronously, and the target supports async
5682 execution, we are not waiting for the target to stop, in the call
5683 tp proceed, below. This means that we cannot delete the
5684 brekpoints until the target has actually stopped. The only place
5685 where we get a chance to do that is in fetch_inferior_event, so
5686 we must set things up for that. */
5688 if (event_loop_p
&& target_can_async_p ())
5690 /* In this case the arg for the continuation is just the point
5691 in the exec_cleanups chain from where to start doing
5692 cleanups, because all the continuation does is the cleanups in
5693 the exec_cleanup_chain. */
5695 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
5697 arg1
->data
.pointer
= old_chain
;
5699 add_continuation (until_break_command_continuation
, arg1
);
5702 /* Keep within the current frame */
5706 sal
= find_pc_line (prev_frame
->pc
, 0);
5707 sal
.pc
= prev_frame
->pc
;
5708 breakpoint
= set_momentary_breakpoint (sal
, prev_frame
, bp_until
);
5709 if (!event_loop_p
|| !target_can_async_p ())
5710 make_cleanup_delete_breakpoint (breakpoint
);
5712 make_exec_cleanup_delete_breakpoint (breakpoint
);
5715 proceed (-1, TARGET_SIGNAL_DEFAULT
, 0);
5716 /* Do the cleanups now, anly if we are not running asynchronously,
5717 of if we are, but the target is still synchronous. */
5718 if (!event_loop_p
|| !target_can_async_p ())
5719 do_cleanups (old_chain
);
5723 /* These aren't used; I don't konw what they were for. */
5724 /* Set a breakpoint at the catch clause for NAME. */
5726 catch_breakpoint (char *name
)
5731 disable_catch_breakpoint (void)
5736 delete_catch_breakpoint (void)
5741 enable_catch_breakpoint (void)
5748 struct sal_chain
*next
;
5749 struct symtab_and_line sal
;
5753 /* Not really used -- invocation in handle_gnu_4_16_catch_command
5754 had been commented out in the v.4.16 sources, and stays
5755 disabled there now because "catch NAME" syntax isn't allowed.
5757 /* This isn't used; I don't know what it was for. */
5758 /* For each catch clause identified in ARGS, run FUNCTION
5759 with that clause as an argument. */
5760 static struct symtabs_and_lines
5761 map_catch_names (char *args
, int (*function
) ())
5763 register char *p
= args
;
5765 struct symtabs_and_lines sals
;
5767 struct sal_chain
*sal_chain
= 0;
5771 error_no_arg ("one or more catch names");
5779 /* Don't swallow conditional part. */
5780 if (p1
[0] == 'i' && p1
[1] == 'f'
5781 && (p1
[2] == ' ' || p1
[2] == '\t'))
5787 while (isalnum (*p1
) || *p1
== '_' || *p1
== '$')
5791 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
5792 error ("Arguments must be catch names.");
5798 struct sal_chain
*next
= (struct sal_chain
*)
5799 alloca (sizeof (struct sal_chain
));
5800 next
->next
= sal_chain
;
5801 next
->sal
= get_catch_sal (p
);
5806 printf_unfiltered ("No catch clause for exception %s.\n", p
);
5811 while (*p
== ' ' || *p
== '\t')
5817 /* This shares a lot of code with `print_frame_label_vars' from stack.c. */
5819 static struct symtabs_and_lines
5820 get_catch_sals (int this_level_only
)
5822 register struct blockvector
*bl
;
5823 register struct block
*block
;
5824 int index
, have_default
= 0;
5826 struct symtabs_and_lines sals
;
5827 struct sal_chain
*sal_chain
= 0;
5828 char *blocks_searched
;
5830 /* Not sure whether an error message is always the correct response,
5831 but it's better than a core dump. */
5832 if (selected_frame
== NULL
)
5833 error ("No selected frame.");
5834 block
= get_frame_block (selected_frame
);
5835 pc
= selected_frame
->pc
;
5841 error ("No symbol table info available.\n");
5843 bl
= blockvector_for_pc (BLOCK_END (block
) - 4, &index
);
5844 blocks_searched
= (char *) alloca (BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5845 memset (blocks_searched
, 0, BLOCKVECTOR_NBLOCKS (bl
) * sizeof (char));
5849 CORE_ADDR end
= BLOCK_END (block
) - 4;
5852 if (bl
!= blockvector_for_pc (end
, &index
))
5853 error ("blockvector blotch");
5854 if (BLOCKVECTOR_BLOCK (bl
, index
) != block
)
5855 error ("blockvector botch");
5856 last_index
= BLOCKVECTOR_NBLOCKS (bl
);
5859 /* Don't print out blocks that have gone by. */
5860 while (index
< last_index
5861 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < pc
)
5864 while (index
< last_index
5865 && BLOCK_END (BLOCKVECTOR_BLOCK (bl
, index
)) < end
)
5867 if (blocks_searched
[index
] == 0)
5869 struct block
*b
= BLOCKVECTOR_BLOCK (bl
, index
);
5872 register struct symbol
*sym
;
5874 nsyms
= BLOCK_NSYMS (b
);
5876 for (i
= 0; i
< nsyms
; i
++)
5878 sym
= BLOCK_SYM (b
, i
);
5879 if (STREQ (SYMBOL_NAME (sym
), "default"))
5885 if (SYMBOL_CLASS (sym
) == LOC_LABEL
)
5887 struct sal_chain
*next
= (struct sal_chain
*)
5888 alloca (sizeof (struct sal_chain
));
5889 next
->next
= sal_chain
;
5890 next
->sal
= find_pc_line (SYMBOL_VALUE_ADDRESS (sym
),
5895 blocks_searched
[index
] = 1;
5901 if (sal_chain
&& this_level_only
)
5904 /* After handling the function's top-level block, stop.
5905 Don't continue to its superblock, the block of
5906 per-file symbols. */
5907 if (BLOCK_FUNCTION (block
))
5909 block
= BLOCK_SUPERBLOCK (block
);
5914 struct sal_chain
*tmp_chain
;
5916 /* Count the number of entries. */
5917 for (index
= 0, tmp_chain
= sal_chain
; tmp_chain
;
5918 tmp_chain
= tmp_chain
->next
)
5922 sals
.sals
= (struct symtab_and_line
*)
5923 xmalloc (index
* sizeof (struct symtab_and_line
));
5924 for (index
= 0; sal_chain
; sal_chain
= sal_chain
->next
, index
++)
5925 sals
.sals
[index
] = sal_chain
->sal
;
5932 ep_skip_leading_whitespace (char **s
)
5934 if ((s
== NULL
) || (*s
== NULL
))
5936 while (isspace (**s
))
5940 /* This function examines a string, and attempts to find a token
5941 that might be an event name in the leading characters. If a
5942 possible match is found, a pointer to the last character of
5943 the token is returned. Else, NULL is returned. */
5946 ep_find_event_name_end (char *arg
)
5949 char *event_name_end
= NULL
;
5951 /* If we could depend upon the presense of strrpbrk, we'd use that... */
5955 /* We break out of the loop when we find a token delimiter.
5956 Basically, we're looking for alphanumerics and underscores;
5957 anything else delimites the token. */
5960 if (!isalnum (*s
) && (*s
!= '_'))
5966 return event_name_end
;
5970 /* This function attempts to parse an optional "if <cond>" clause
5971 from the arg string. If one is not found, it returns NULL.
5973 Else, it returns a pointer to the condition string. (It does not
5974 attempt to evaluate the string against a particular block.) And,
5975 it updates arg to point to the first character following the parsed
5976 if clause in the arg string. */
5979 ep_parse_optional_if_clause (char **arg
)
5983 if (((*arg
)[0] != 'i') || ((*arg
)[1] != 'f') || !isspace ((*arg
)[2]))
5986 /* Skip the "if" keyword. */
5989 /* Skip any extra leading whitespace, and record the start of the
5990 condition string. */
5991 ep_skip_leading_whitespace (arg
);
5994 /* Assume that the condition occupies the remainder of the arg string. */
5995 (*arg
) += strlen (cond_string
);
6000 /* This function attempts to parse an optional filename from the arg
6001 string. If one is not found, it returns NULL.
6003 Else, it returns a pointer to the parsed filename. (This function
6004 makes no attempt to verify that a file of that name exists, or is
6005 accessible.) And, it updates arg to point to the first character
6006 following the parsed filename in the arg string.
6008 Note that clients needing to preserve the returned filename for
6009 future access should copy it to their own buffers. */
6011 ep_parse_optional_filename (char **arg
)
6013 static char filename
[1024];
6018 if ((*arg_p
== '\0') || isspace (*arg_p
))
6036 /* Commands to deal with catching events, such as signals, exceptions,
6037 process start/exit, etc. */
6041 catch_fork
, catch_vfork
6045 #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT)
6046 static void catch_fork_command_1 (catch_fork_kind fork_kind
,
6047 char *arg
, int tempflag
, int from_tty
);
6050 catch_fork_command_1 (catch_fork_kind fork_kind
, char *arg
, int tempflag
,
6053 char *cond_string
= NULL
;
6055 ep_skip_leading_whitespace (&arg
);
6057 /* The allowed syntax is:
6059 catch [v]fork if <cond>
6061 First, check if there's an if clause. */
6062 cond_string
= ep_parse_optional_if_clause (&arg
);
6064 if ((*arg
!= '\0') && !isspace (*arg
))
6065 error ("Junk at end of arguments.");
6067 /* If this target supports it, create a fork or vfork catchpoint
6068 and enable reporting of such events. */
6072 create_fork_event_catchpoint (tempflag
, cond_string
);
6075 create_vfork_event_catchpoint (tempflag
, cond_string
);
6078 error ("unsupported or unknown fork kind; cannot catch it");
6084 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
6086 catch_exec_command_1 (char *arg
, int tempflag
, int from_tty
)
6088 char *cond_string
= NULL
;
6090 ep_skip_leading_whitespace (&arg
);
6092 /* The allowed syntax is:
6094 catch exec if <cond>
6096 First, check if there's an if clause. */
6097 cond_string
= ep_parse_optional_if_clause (&arg
);
6099 if ((*arg
!= '\0') && !isspace (*arg
))
6100 error ("Junk at end of arguments.");
6102 /* If this target supports it, create an exec catchpoint
6103 and enable reporting of such events. */
6104 create_exec_event_catchpoint (tempflag
, cond_string
);
6108 #if defined(SOLIB_ADD)
6110 catch_load_command_1 (char *arg
, int tempflag
, int from_tty
)
6112 char *dll_pathname
= NULL
;
6113 char *cond_string
= NULL
;
6115 ep_skip_leading_whitespace (&arg
);
6117 /* The allowed syntax is:
6119 catch load if <cond>
6120 catch load <filename>
6121 catch load <filename> if <cond>
6123 The user is not allowed to specify the <filename> after an
6126 We'll ignore the pathological case of a file named "if".
6128 First, check if there's an if clause. If so, then there
6129 cannot be a filename. */
6130 cond_string
= ep_parse_optional_if_clause (&arg
);
6132 /* If there was an if clause, then there cannot be a filename.
6133 Else, there might be a filename and an if clause. */
6134 if (cond_string
== NULL
)
6136 dll_pathname
= ep_parse_optional_filename (&arg
);
6137 ep_skip_leading_whitespace (&arg
);
6138 cond_string
= ep_parse_optional_if_clause (&arg
);
6141 if ((*arg
!= '\0') && !isspace (*arg
))
6142 error ("Junk at end of arguments.");
6144 /* Create a load breakpoint that only triggers when a load of
6145 the specified dll (or any dll, if no pathname was specified)
6147 SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6148 dll_pathname
, cond_string
);
6152 catch_unload_command_1 (char *arg
, int tempflag
, int from_tty
)
6154 char *dll_pathname
= NULL
;
6155 char *cond_string
= NULL
;
6157 ep_skip_leading_whitespace (&arg
);
6159 /* The allowed syntax is:
6161 catch unload if <cond>
6162 catch unload <filename>
6163 catch unload <filename> if <cond>
6165 The user is not allowed to specify the <filename> after an
6168 We'll ignore the pathological case of a file named "if".
6170 First, check if there's an if clause. If so, then there
6171 cannot be a filename. */
6172 cond_string
= ep_parse_optional_if_clause (&arg
);
6174 /* If there was an if clause, then there cannot be a filename.
6175 Else, there might be a filename and an if clause. */
6176 if (cond_string
== NULL
)
6178 dll_pathname
= ep_parse_optional_filename (&arg
);
6179 ep_skip_leading_whitespace (&arg
);
6180 cond_string
= ep_parse_optional_if_clause (&arg
);
6183 if ((*arg
!= '\0') && !isspace (*arg
))
6184 error ("Junk at end of arguments.");
6186 /* Create an unload breakpoint that only triggers when an unload of
6187 the specified dll (or any dll, if no pathname was specified)
6189 SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid
), tempflag
,
6190 dll_pathname
, cond_string
);
6192 #endif /* SOLIB_ADD */
6194 /* Commands to deal with catching exceptions. */
6196 /* Set a breakpoint at the specified callback routine for an
6197 exception event callback */
6200 create_exception_catchpoint (int tempflag
, char *cond_string
,
6201 enum exception_event_kind ex_event
,
6202 struct symtab_and_line
*sal
)
6204 struct breakpoint
*b
;
6205 int thread
= -1; /* All threads. */
6208 if (!sal
) /* no exception support? */
6213 case EX_EVENT_THROW
:
6214 bptype
= bp_catch_throw
;
6216 case EX_EVENT_CATCH
:
6217 bptype
= bp_catch_catch
;
6219 default: /* error condition */
6220 error ("Internal error -- invalid catchpoint kind");
6223 b
= set_raw_breakpoint (*sal
, bptype
);
6224 set_breakpoint_count (breakpoint_count
+ 1);
6225 b
->number
= breakpoint_count
;
6227 b
->cond_string
= (cond_string
== NULL
) ?
6228 NULL
: savestring (cond_string
, strlen (cond_string
));
6230 b
->addr_string
= NULL
;
6231 b
->enable
= enabled
;
6232 b
->disposition
= tempflag
? del
: donttouch
;
6236 /* Deal with "catch catch" and "catch throw" commands */
6239 catch_exception_command_1 (enum exception_event_kind ex_event
, char *arg
,
6240 int tempflag
, int from_tty
)
6242 char *cond_string
= NULL
;
6243 struct symtab_and_line
*sal
= NULL
;
6245 ep_skip_leading_whitespace (&arg
);
6247 cond_string
= ep_parse_optional_if_clause (&arg
);
6249 if ((*arg
!= '\0') && !isspace (*arg
))
6250 error ("Junk at end of arguments.");
6252 if ((ex_event
!= EX_EVENT_THROW
) &&
6253 (ex_event
!= EX_EVENT_CATCH
))
6254 error ("Unsupported or unknown exception event; cannot catch it");
6256 /* See if we can find a callback routine */
6257 sal
= target_enable_exception_callback (ex_event
, 1);
6261 /* We have callbacks from the runtime system for exceptions.
6262 Set a breakpoint on the sal found, if no errors */
6263 if (sal
!= (struct symtab_and_line
*) -1)
6264 create_exception_catchpoint (tempflag
, cond_string
, ex_event
, sal
);
6266 return; /* something went wrong with setting up callbacks */
6270 /* No callbacks from runtime system for exceptions.
6271 Try GNU C++ exception breakpoints using labels in debug info. */
6272 if (ex_event
== EX_EVENT_CATCH
)
6274 handle_gnu_4_16_catch_command (arg
, tempflag
, from_tty
);
6276 else if (ex_event
== EX_EVENT_THROW
)
6278 /* Set a breakpoint on __raise_exception () */
6280 warning ("Unsupported with this platform/compiler combination.");
6281 warning ("Perhaps you can achieve the effect you want by setting");
6282 warning ("a breakpoint on __raise_exception().");
6287 /* Cover routine to allow wrapping target_enable_exception_catchpoints
6288 inside a catch_errors */
6291 cover_target_enable_exception_callback (PTR arg
)
6293 args_for_catchpoint_enable
*args
= arg
;
6294 struct symtab_and_line
*sal
;
6295 sal
= target_enable_exception_callback (args
->kind
, args
->enable
);
6298 else if (sal
== (struct symtab_and_line
*) -1)
6301 return 1; /*is valid */
6306 /* This is the original v.4.16 and earlier version of the
6307 catch_command_1() function. Now that other flavours of "catch"
6308 have been introduced, and since exception handling can be handled
6309 in other ways (through target ops) also, this is used only for the
6310 GNU C++ exception handling system.
6311 Note: Only the "catch" flavour of GDB 4.16 is handled here. The
6312 "catch NAME" is now no longer allowed in catch_command_1(). Also,
6313 there was no code in GDB 4.16 for "catch throw".
6315 Called from catch_exception_command_1 () */
6319 handle_gnu_4_16_catch_command (char *arg
, int tempflag
, int from_tty
)
6321 /* First, translate ARG into something we can deal with in terms
6324 struct symtabs_and_lines sals
;
6325 struct symtab_and_line sal
;
6326 register struct expression
*cond
= 0;
6327 register struct breakpoint
*b
;
6331 INIT_SAL (&sal
); /* initialize to zeroes */
6333 /* If no arg given, or if first arg is 'if ', all active catch clauses
6334 are breakpointed. */
6336 if (!arg
|| (arg
[0] == 'i' && arg
[1] == 'f'
6337 && (arg
[2] == ' ' || arg
[2] == '\t')))
6339 /* Grab all active catch clauses. */
6340 sals
= get_catch_sals (0);
6344 /* Grab selected catch clauses. */
6345 error ("catch NAME not implemented");
6348 /* Not sure why this code has been disabled. I'm leaving
6349 it disabled. We can never come here now anyway
6350 since we don't allow the "catch NAME" syntax.
6353 /* This isn't used; I don't know what it was for. */
6354 sals
= map_catch_names (arg
, catch_breakpoint
);
6362 for (i
= 0; i
< sals
.nelts
; i
++)
6364 resolve_sal_pc (&sals
.sals
[i
]);
6368 if (arg
[0] == 'i' && arg
[1] == 'f'
6369 && (arg
[2] == ' ' || arg
[2] == '\t'))
6370 cond
= parse_exp_1 ((arg
+= 2, &arg
),
6371 block_for_pc (sals
.sals
[i
].pc
), 0);
6373 error ("Junk at end of arguments.");
6378 for (i
= 0; i
< sals
.nelts
; i
++)
6383 describe_other_breakpoints (sal
.pc
, sal
.section
);
6385 /* Important -- this is an ordinary breakpoint. For platforms
6386 with callback support for exceptions,
6387 create_exception_catchpoint() will create special bp types
6388 (bp_catch_catch and bp_catch_throw), and there is code in
6389 insert_breakpoints() and elsewhere that depends on that. */
6390 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6391 set_breakpoint_count (breakpoint_count
+ 1);
6392 b
->number
= breakpoint_count
;
6395 b
->enable
= enabled
;
6396 b
->disposition
= tempflag
? del
: donttouch
;
6403 warning ("Multiple breakpoints were set.");
6404 warning ("Use the \"delete\" command to delete unwanted breakpoints.");
6410 /* This creates a temporary internal breakpoint
6411 just to placate infrun */
6412 static struct breakpoint
*
6413 create_temp_exception_breakpoint (CORE_ADDR pc
)
6415 struct symtab_and_line sal
;
6416 struct breakpoint
*b
;
6423 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6425 b
->disposition
= del
;
6426 b
->enable
= enabled
;
6428 b
->number
= internal_breakpoint_number
--;
6434 catch_command_1 (char *arg
, int tempflag
, int from_tty
)
6437 /* The first argument may be an event name, such as "start" or "load".
6438 If so, then handle it as such. If it doesn't match an event name,
6439 then attempt to interpret it as an exception name. (This latter is
6440 the v4.16-and-earlier GDB meaning of the "catch" command.)
6442 First, try to find the bounds of what might be an event name. */
6443 char *arg1_start
= arg
;
6447 if (arg1_start
== NULL
)
6449 /* Old behaviour was to use pre-v-4.16 syntax */
6450 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6452 /* Now, this is not allowed */
6453 error ("Catch requires an event name.");
6456 arg1_end
= ep_find_event_name_end (arg1_start
);
6457 if (arg1_end
== NULL
)
6458 error ("catch requires an event");
6459 arg1_length
= arg1_end
+ 1 - arg1_start
;
6461 /* Try to match what we found against known event names. */
6462 if (strncmp (arg1_start
, "signal", arg1_length
) == 0)
6464 error ("Catch of signal not yet implemented");
6466 else if (strncmp (arg1_start
, "catch", arg1_length
) == 0)
6468 catch_exception_command_1 (EX_EVENT_CATCH
, arg1_end
+ 1,
6469 tempflag
, from_tty
);
6471 else if (strncmp (arg1_start
, "throw", arg1_length
) == 0)
6473 catch_exception_command_1 (EX_EVENT_THROW
, arg1_end
+ 1,
6474 tempflag
, from_tty
);
6476 else if (strncmp (arg1_start
, "thread_start", arg1_length
) == 0)
6478 error ("Catch of thread_start not yet implemented");
6480 else if (strncmp (arg1_start
, "thread_exit", arg1_length
) == 0)
6482 error ("Catch of thread_exit not yet implemented");
6484 else if (strncmp (arg1_start
, "thread_join", arg1_length
) == 0)
6486 error ("Catch of thread_join not yet implemented");
6488 else if (strncmp (arg1_start
, "start", arg1_length
) == 0)
6490 error ("Catch of start not yet implemented");
6492 else if (strncmp (arg1_start
, "exit", arg1_length
) == 0)
6494 error ("Catch of exit not yet implemented");
6496 else if (strncmp (arg1_start
, "fork", arg1_length
) == 0)
6498 #if defined(CHILD_INSERT_FORK_CATCHPOINT)
6499 catch_fork_command_1 (catch_fork
, arg1_end
+ 1, tempflag
, from_tty
);
6501 error ("Catch of fork not yet implemented");
6504 else if (strncmp (arg1_start
, "vfork", arg1_length
) == 0)
6506 #if defined(CHILD_INSERT_VFORK_CATCHPOINT)
6507 catch_fork_command_1 (catch_vfork
, arg1_end
+ 1, tempflag
, from_tty
);
6509 error ("Catch of vfork not yet implemented");
6512 else if (strncmp (arg1_start
, "exec", arg1_length
) == 0)
6514 #if defined(CHILD_INSERT_EXEC_CATCHPOINT)
6515 catch_exec_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6517 error ("Catch of exec not yet implemented");
6520 else if (strncmp (arg1_start
, "load", arg1_length
) == 0)
6522 #if defined(SOLIB_ADD)
6523 catch_load_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6525 error ("Catch of load not implemented");
6528 else if (strncmp (arg1_start
, "unload", arg1_length
) == 0)
6530 #if defined(SOLIB_ADD)
6531 catch_unload_command_1 (arg1_end
+ 1, tempflag
, from_tty
);
6533 error ("Catch of load not implemented");
6536 else if (strncmp (arg1_start
, "stop", arg1_length
) == 0)
6538 error ("Catch of stop not yet implemented");
6541 /* This doesn't appear to be an event name */
6545 /* Pre-v.4.16 behaviour was to treat the argument
6546 as the name of an exception */
6547 /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */
6548 /* Now this is not allowed */
6549 error ("Unknown event kind specified for catch");
6554 /* Used by the gui, could be made a worker for other things. */
6557 set_breakpoint_sal (struct symtab_and_line sal
)
6559 struct breakpoint
*b
;
6560 b
= set_raw_breakpoint (sal
, bp_breakpoint
);
6561 set_breakpoint_count (breakpoint_count
+ 1);
6562 b
->number
= breakpoint_count
;
6569 /* These aren't used; I don't know what they were for. */
6570 /* Disable breakpoints on all catch clauses described in ARGS. */
6572 disable_catch (char *args
)
6574 /* Map the disable command to catch clauses described in ARGS. */
6577 /* Enable breakpoints on all catch clauses described in ARGS. */
6579 enable_catch (char *args
)
6581 /* Map the disable command to catch clauses described in ARGS. */
6584 /* Delete breakpoints on all catch clauses in the active scope. */
6586 delete_catch (char *args
)
6588 /* Map the delete command to catch clauses described in ARGS. */
6593 catch_command (char *arg
, int from_tty
)
6595 catch_command_1 (arg
, 0, from_tty
);
6600 tcatch_command (char *arg
, int from_tty
)
6602 catch_command_1 (arg
, 1, from_tty
);
6607 clear_command (char *arg
, int from_tty
)
6609 register struct breakpoint
*b
, *b1
;
6611 struct symtabs_and_lines sals
;
6612 struct symtab_and_line sal
;
6613 register struct breakpoint
*found
;
6618 sals
= decode_line_spec (arg
, 1);
6623 sals
.sals
= (struct symtab_and_line
*)
6624 xmalloc (sizeof (struct symtab_and_line
));
6625 INIT_SAL (&sal
); /* initialize to zeroes */
6626 sal
.line
= default_breakpoint_line
;
6627 sal
.symtab
= default_breakpoint_symtab
;
6628 sal
.pc
= default_breakpoint_address
;
6629 if (sal
.symtab
== 0)
6630 error ("No source file specified.");
6638 /* For each line spec given, delete bps which correspond
6639 to it. We do this in two loops: the first loop looks at
6640 the initial bp(s) in the chain which should be deleted,
6641 the second goes down the rest of the chain looking ahead
6642 one so it can take those bps off the chain without messing
6646 for (i
= 0; i
< sals
.nelts
; i
++)
6648 /* If exact pc given, clear bpts at that pc.
6649 If line given (pc == 0), clear all bpts on specified line.
6650 If defaulting, clear all bpts on default line
6653 defaulting sal.pc != 0 tests to do
6658 1 0 <can't happen> */
6661 found
= (struct breakpoint
*) 0;
6664 while (breakpoint_chain
6665 /* Why don't we check here that this is not
6666 a watchpoint, etc., as we do below?
6667 I can't make it fail, but don't know
6668 what's stopping the failure: a watchpoint
6669 of the same address as "sal.pc" should
6670 wind up being deleted. */
6672 && (((sal
.pc
&& (breakpoint_chain
->address
== sal
.pc
)) &&
6673 (overlay_debugging
== 0 ||
6674 breakpoint_chain
->section
== sal
.section
))
6675 || ((default_match
|| (0 == sal
.pc
))
6676 && breakpoint_chain
->source_file
!= NULL
6677 && sal
.symtab
!= NULL
6678 && STREQ (breakpoint_chain
->source_file
, sal
.symtab
->filename
)
6679 && breakpoint_chain
->line_number
== sal
.line
)))
6682 b1
= breakpoint_chain
;
6683 breakpoint_chain
= b1
->next
;
6691 && b
->next
->type
!= bp_none
6692 && b
->next
->type
!= bp_watchpoint
6693 && b
->next
->type
!= bp_hardware_watchpoint
6694 && b
->next
->type
!= bp_read_watchpoint
6695 && b
->next
->type
!= bp_access_watchpoint
6696 && (((sal
.pc
&& (b
->next
->address
== sal
.pc
)) &&
6697 (overlay_debugging
== 0 ||
6698 b
->next
->section
== sal
.section
))
6699 || ((default_match
|| (0 == sal
.pc
))
6700 && b
->next
->source_file
!= NULL
6701 && sal
.symtab
!= NULL
6702 && STREQ (b
->next
->source_file
, sal
.symtab
->filename
)
6703 && b
->next
->line_number
== sal
.line
)))
6716 error ("No breakpoint at %s.", arg
);
6718 error ("No breakpoint at this line.");
6722 from_tty
= 1; /* Always report if deleted more than one */
6724 printf_unfiltered ("Deleted breakpoint%s ", found
->next
? "s" : "");
6725 breakpoints_changed ();
6729 printf_unfiltered ("%d ", found
->number
);
6731 delete_breakpoint (found
);
6735 putchar_unfiltered ('\n');
6740 /* Delete breakpoint in BS if they are `delete' breakpoints and
6741 all breakpoints that are marked for deletion, whether hit or not.
6742 This is called after any breakpoint is hit, or after errors. */
6745 breakpoint_auto_delete (bpstat bs
)
6747 struct breakpoint
*b
, *temp
;
6749 for (; bs
; bs
= bs
->next
)
6750 if (bs
->breakpoint_at
&& bs
->breakpoint_at
->disposition
== del
6752 delete_breakpoint (bs
->breakpoint_at
);
6754 ALL_BREAKPOINTS_SAFE (b
, temp
)
6756 if (b
->disposition
== del_at_next_stop
)
6757 delete_breakpoint (b
);
6761 /* Delete a breakpoint and clean up all traces of it in the data
6765 delete_breakpoint (struct breakpoint
*bpt
)
6767 register struct breakpoint
*b
;
6771 error ("Internal error (attempted to delete a NULL breakpoint)");
6774 /* Has this bp already been deleted? This can happen because multiple
6775 lists can hold pointers to bp's. bpstat lists are especial culprits.
6777 One example of this happening is a watchpoint's scope bp. When the
6778 scope bp triggers, we notice that the watchpoint is out of scope, and
6779 delete it. We also delete its scope bp. But the scope bp is marked
6780 "auto-deleting", and is already on a bpstat. That bpstat is then
6781 checked for auto-deleting bp's, which are deleted.
6783 A real solution to this problem might involve reference counts in bp's,
6784 and/or giving them pointers back to their referencing bpstat's, and
6785 teaching delete_breakpoint to only free a bp's storage when no more
6786 references were extent. A cheaper bandaid was chosen. */
6787 if (bpt
->type
== bp_none
)
6790 if (delete_breakpoint_hook
)
6791 delete_breakpoint_hook (bpt
);
6792 breakpoint_delete_event (bpt
->number
);
6795 remove_breakpoint (bpt
, mark_inserted
);
6797 if (breakpoint_chain
== bpt
)
6798 breakpoint_chain
= bpt
->next
;
6800 /* If we have callback-style exception catchpoints, don't go through
6801 the adjustments to the C++ runtime library etc. if the inferior
6802 isn't actually running. target_enable_exception_callback for a
6803 null target ops vector gives an undesirable error message, so we
6804 check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's
6805 exceptions are supported in this way, it's OK for now. FIXME */
6806 if (ep_is_exception_catchpoint (bpt
) && target_has_execution
)
6808 static char message1
[] = "Error in deleting catchpoint %d:\n";
6809 static char message
[sizeof (message1
) + 30];
6810 args_for_catchpoint_enable args
;
6812 /* Format possible error msg */
6813 sprintf (message
, message1
, bpt
->number
);
6814 args
.kind
= bpt
->type
== bp_catch_catch
?
6815 EX_EVENT_CATCH
: EX_EVENT_THROW
;
6817 catch_errors (cover_target_enable_exception_callback
, &args
,
6818 message
, RETURN_MASK_ALL
);
6825 b
->next
= bpt
->next
;
6829 /* Before turning off the visuals for the bp, check to see that
6830 there are no other bps at the same address. */
6837 clearIt
= (b
->address
!= bpt
->address
);
6844 TUIDO (((TuiOpaqueFuncPtr
) tui_vAllSetHasBreakAt
, bpt
, 0));
6845 TUIDO (((TuiOpaqueFuncPtr
) tuiUpdateAllExecInfos
));
6849 check_duplicates (bpt
);
6850 /* If this breakpoint was inserted, and there is another breakpoint
6851 at the same address, we need to insert the other breakpoint. */
6853 && bpt
->type
!= bp_hardware_watchpoint
6854 && bpt
->type
!= bp_read_watchpoint
6855 && bpt
->type
!= bp_access_watchpoint
6856 && bpt
->type
!= bp_catch_fork
6857 && bpt
->type
!= bp_catch_vfork
6858 && bpt
->type
!= bp_catch_exec
)
6861 if (b
->address
== bpt
->address
6862 && b
->section
== bpt
->section
6864 && b
->enable
!= disabled
6865 && b
->enable
!= shlib_disabled
6866 && b
->enable
!= call_disabled
)
6870 /* We should never reach this point if there is a permanent
6871 breakpoint at the same address as the one being deleted.
6872 If there is a permanent breakpoint somewhere, it should
6873 always be the only one inserted. */
6874 if (b
->enable
== permanent
)
6875 internal_error (__FILE__
, __LINE__
,
6876 "another breakpoint was inserted on top of "
6877 "a permanent breakpoint");
6879 if (b
->type
== bp_hardware_breakpoint
)
6880 val
= target_insert_hw_breakpoint (b
->address
, b
->shadow_contents
);
6882 val
= target_insert_breakpoint (b
->address
, b
->shadow_contents
);
6886 target_terminal_ours_for_output ();
6887 warning ("Cannot insert breakpoint %d:", b
->number
);
6888 memory_error (val
, b
->address
); /* which bombs us out */
6895 free_command_lines (&bpt
->commands
);
6898 if (bpt
->cond_string
!= NULL
)
6899 xfree (bpt
->cond_string
);
6900 if (bpt
->addr_string
!= NULL
)
6901 xfree (bpt
->addr_string
);
6902 if (bpt
->exp
!= NULL
)
6904 if (bpt
->exp_string
!= NULL
)
6905 xfree (bpt
->exp_string
);
6906 if (bpt
->val
!= NULL
)
6907 value_free (bpt
->val
);
6908 if (bpt
->source_file
!= NULL
)
6909 xfree (bpt
->source_file
);
6910 if (bpt
->dll_pathname
!= NULL
)
6911 xfree (bpt
->dll_pathname
);
6912 if (bpt
->triggered_dll_pathname
!= NULL
)
6913 xfree (bpt
->triggered_dll_pathname
);
6914 if (bpt
->exec_pathname
!= NULL
)
6915 xfree (bpt
->exec_pathname
);
6917 /* Be sure no bpstat's are pointing at it after it's been freed. */
6918 /* FIXME, how can we find all bpstat's?
6919 We just check stop_bpstat for now. */
6920 for (bs
= stop_bpstat
; bs
; bs
= bs
->next
)
6921 if (bs
->breakpoint_at
== bpt
)
6923 bs
->breakpoint_at
= NULL
;
6925 /* we'd call bpstat_clear_actions, but that free's stuff and due
6926 to the multiple pointers pointing to one item with no
6927 reference counts found anywhere through out the bpstat's (how
6928 do you spell fragile?), we don't want to free things twice --
6929 better a memory leak than a corrupt malloc pool! */
6930 bs
->commands
= NULL
;
6933 /* On the chance that someone will soon try again to delete this same
6934 bp, we mark it as deleted before freeing its storage. */
6935 bpt
->type
= bp_none
;
6941 do_delete_breakpoint_cleanup (void *b
)
6943 delete_breakpoint (b
);
6947 make_cleanup_delete_breakpoint (struct breakpoint
*b
)
6949 return make_cleanup (do_delete_breakpoint_cleanup
, b
);
6953 make_exec_cleanup_delete_breakpoint (struct breakpoint
*b
)
6955 return make_exec_cleanup (do_delete_breakpoint_cleanup
, b
);
6959 delete_command (char *arg
, int from_tty
)
6961 struct breakpoint
*b
, *temp
;
6965 int breaks_to_delete
= 0;
6967 /* Delete all breakpoints if no argument.
6968 Do not delete internal or call-dummy breakpoints, these
6969 have to be deleted with an explicit breakpoint number argument. */
6972 if (b
->type
!= bp_call_dummy
&&
6973 b
->type
!= bp_shlib_event
&&
6974 b
->type
!= bp_thread_event
&&
6976 breaks_to_delete
= 1;
6979 /* Ask user only if there are some breakpoints to delete. */
6981 || (breaks_to_delete
&& query ("Delete all breakpoints? ")))
6983 ALL_BREAKPOINTS_SAFE (b
, temp
)
6985 if (b
->type
!= bp_call_dummy
&&
6986 b
->type
!= bp_shlib_event
&&
6987 b
->type
!= bp_thread_event
&&
6989 delete_breakpoint (b
);
6994 map_breakpoint_numbers (arg
, delete_breakpoint
);
6997 /* Reset a breakpoint given it's struct breakpoint * BINT.
6998 The value we return ends up being the return value from catch_errors.
6999 Unused in this case. */
7002 breakpoint_re_set_one (PTR bint
)
7004 /* get past catch_errs */
7005 struct breakpoint
*b
= (struct breakpoint
*) bint
;
7008 struct symtabs_and_lines sals
;
7010 enum enable save_enable
;
7015 warning ("attempted to reset apparently deleted breakpoint #%d?",
7019 case bp_hardware_breakpoint
:
7021 case bp_catch_unload
:
7022 if (b
->addr_string
== NULL
)
7024 /* Anything without a string can't be re-set. */
7025 delete_breakpoint (b
);
7028 /* In case we have a problem, disable this breakpoint. We'll restore
7029 its status if we succeed. */
7030 save_enable
= b
->enable
;
7031 b
->enable
= disabled
;
7033 set_language (b
->language
);
7034 input_radix
= b
->input_radix
;
7036 sals
= decode_line_1 (&s
, 1, (struct symtab
*) NULL
, 0, (char ***) NULL
);
7037 for (i
= 0; i
< sals
.nelts
; i
++)
7039 resolve_sal_pc (&sals
.sals
[i
]);
7041 /* Reparse conditions, they might contain references to the
7043 if (b
->cond_string
!= NULL
)
7048 b
->cond
= parse_exp_1 (&s
, block_for_pc (sals
.sals
[i
].pc
), 0);
7051 /* We need to re-set the breakpoint if the address changes... */
7052 if (b
->address
!= sals
.sals
[i
].pc
7053 /* ...or new and old breakpoints both have source files, and
7054 the source file name or the line number changes... */
7055 || (b
->source_file
!= NULL
7056 && sals
.sals
[i
].symtab
!= NULL
7057 && (!STREQ (b
->source_file
, sals
.sals
[i
].symtab
->filename
)
7058 || b
->line_number
!= sals
.sals
[i
].line
)
7060 /* ...or we switch between having a source file and not having
7062 || ((b
->source_file
== NULL
) != (sals
.sals
[i
].symtab
== NULL
))
7065 if (b
->source_file
!= NULL
)
7066 xfree (b
->source_file
);
7067 if (sals
.sals
[i
].symtab
== NULL
)
7068 b
->source_file
= NULL
;
7071 savestring (sals
.sals
[i
].symtab
->filename
,
7072 strlen (sals
.sals
[i
].symtab
->filename
));
7073 b
->line_number
= sals
.sals
[i
].line
;
7074 b
->address
= sals
.sals
[i
].pc
;
7076 /* Used to check for duplicates here, but that can
7077 cause trouble, as it doesn't check for disable
7082 /* Might be better to do this just once per breakpoint_re_set,
7083 rather than once for every breakpoint. */
7084 breakpoints_changed ();
7086 b
->section
= sals
.sals
[i
].section
;
7087 b
->enable
= save_enable
; /* Restore it, this worked. */
7090 /* Now that this is re-enabled, check_duplicates
7092 check_duplicates (b
);
7099 case bp_hardware_watchpoint
:
7100 case bp_read_watchpoint
:
7101 case bp_access_watchpoint
:
7102 innermost_block
= NULL
;
7103 /* The issue arises of what context to evaluate this in. The
7104 same one as when it was set, but what does that mean when
7105 symbols have been re-read? We could save the filename and
7106 functionname, but if the context is more local than that, the
7107 best we could do would be something like how many levels deep
7108 and which index at that particular level, but that's going to
7109 be less stable than filenames or function names. */
7111 /* So for now, just use a global context. */
7114 b
->exp
= parse_expression (b
->exp_string
);
7115 b
->exp_valid_block
= innermost_block
;
7116 mark
= value_mark ();
7118 value_free (b
->val
);
7119 b
->val
= evaluate_expression (b
->exp
);
7120 release_value (b
->val
);
7121 if (VALUE_LAZY (b
->val
))
7122 value_fetch_lazy (b
->val
);
7124 if (b
->cond_string
!= NULL
)
7129 b
->cond
= parse_exp_1 (&s
, (struct block
*) 0, 0);
7131 if (b
->enable
== enabled
)
7133 value_free_to_mark (mark
);
7135 case bp_catch_catch
:
7136 case bp_catch_throw
:
7138 /* We needn't really do anything to reset these, since the mask
7139 that requests them is unaffected by e.g., new libraries being
7142 case bp_catch_vfork
:
7147 printf_filtered ("Deleting unknown breakpoint type %d\n", b
->type
);
7149 /* Delete longjmp breakpoints, they will be reset later by
7150 breakpoint_re_set. */
7152 case bp_longjmp_resume
:
7153 delete_breakpoint (b
);
7156 /* This breakpoint is special, it's set up when the inferior
7157 starts and we really don't want to touch it. */
7158 case bp_shlib_event
:
7160 /* Like bp_shlib_event, this breakpoint type is special.
7161 Once it is set up, we do not want to touch it. */
7162 case bp_thread_event
:
7164 /* Keep temporary breakpoints, which can be encountered when we step
7165 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
7166 Otherwise these should have been blown away via the cleanup chain
7167 or by breakpoint_init_inferior when we rerun the executable. */
7170 case bp_watchpoint_scope
:
7172 case bp_step_resume
:
7179 /* Re-set all breakpoints after symbols have been re-loaded. */
7181 breakpoint_re_set (void)
7183 struct breakpoint
*b
, *temp
;
7184 enum language save_language
;
7185 int save_input_radix
;
7186 static char message1
[] = "Error in re-setting breakpoint %d:\n";
7187 char message
[sizeof (message1
) + 30 /* slop */ ];
7189 save_language
= current_language
->la_language
;
7190 save_input_radix
= input_radix
;
7191 ALL_BREAKPOINTS_SAFE (b
, temp
)
7193 /* Format possible error msg */
7194 sprintf (message
, message1
, b
->number
);
7195 catch_errors (breakpoint_re_set_one
, b
, message
, RETURN_MASK_ALL
);
7197 set_language (save_language
);
7198 input_radix
= save_input_radix
;
7200 #ifdef GET_LONGJMP_TARGET
7201 create_longjmp_breakpoint ("longjmp");
7202 create_longjmp_breakpoint ("_longjmp");
7203 create_longjmp_breakpoint ("siglongjmp");
7204 create_longjmp_breakpoint ("_siglongjmp");
7205 create_longjmp_breakpoint (NULL
);
7209 /* Took this out (temporarily at least), since it produces an extra
7210 blank line at startup. This messes up the gdbtests. -PB */
7211 /* Blank line to finish off all those mention() messages we just printed. */
7212 printf_filtered ("\n");
7216 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
7217 If from_tty is nonzero, it prints a message to that effect,
7218 which ends with a period (no newline). */
7220 /* Reset the thread number of this breakpoint:
7222 - If the breakpoint is for all threads, leave it as-is.
7223 - Else, reset it to the current thread for inferior_ptid. */
7225 breakpoint_re_set_thread (struct breakpoint
*b
)
7227 if (b
->thread
!= -1)
7229 if (in_thread_list (inferior_ptid
))
7230 b
->thread
= pid_to_thread_id (inferior_ptid
);
7235 set_ignore_count (int bptnum
, int count
, int from_tty
)
7237 register struct breakpoint
*b
;
7243 if (b
->number
== bptnum
)
7245 b
->ignore_count
= count
;
7248 else if (count
== 0)
7249 printf_filtered ("Will stop next time breakpoint %d is reached.",
7251 else if (count
== 1)
7252 printf_filtered ("Will ignore next crossing of breakpoint %d.",
7255 printf_filtered ("Will ignore next %d crossings of breakpoint %d.",
7257 breakpoints_changed ();
7261 error ("No breakpoint number %d.", bptnum
);
7264 /* Clear the ignore counts of all breakpoints. */
7266 breakpoint_clear_ignore_counts (void)
7268 struct breakpoint
*b
;
7271 b
->ignore_count
= 0;
7274 /* Command to set ignore-count of breakpoint N to COUNT. */
7277 ignore_command (char *args
, int from_tty
)
7283 error_no_arg ("a breakpoint number");
7285 num
= get_number (&p
);
7287 error ("bad breakpoint number: '%s'", args
);
7289 error ("Second argument (specified ignore-count) is missing.");
7291 set_ignore_count (num
,
7292 longest_to_int (value_as_long (parse_and_eval (p
))),
7294 printf_filtered ("\n");
7295 breakpoints_changed ();
7298 /* Call FUNCTION on each of the breakpoints
7299 whose numbers are given in ARGS. */
7302 map_breakpoint_numbers (char *args
, void (*function
) (struct breakpoint
*))
7304 register char *p
= args
;
7307 register struct breakpoint
*b
, *tmp
;
7311 error_no_arg ("one or more breakpoint numbers");
7318 num
= get_number_or_range (&p1
);
7321 warning ("bad breakpoint number at or near '%s'", p
);
7325 ALL_BREAKPOINTS_SAFE (b
, tmp
)
7326 if (b
->number
== num
)
7328 struct breakpoint
*related_breakpoint
= b
->related_breakpoint
;
7331 if (related_breakpoint
)
7332 function (related_breakpoint
);
7336 printf_unfiltered ("No breakpoint number %d.\n", num
);
7343 disable_breakpoint (struct breakpoint
*bpt
)
7345 /* Never disable a watchpoint scope breakpoint; we want to
7346 hit them when we leave scope so we can delete both the
7347 watchpoint and its scope breakpoint at that time. */
7348 if (bpt
->type
== bp_watchpoint_scope
)
7351 /* You can't disable permanent breakpoints. */
7352 if (bpt
->enable
== permanent
)
7355 bpt
->enable
= disabled
;
7357 check_duplicates (bpt
);
7359 if (modify_breakpoint_hook
)
7360 modify_breakpoint_hook (bpt
);
7361 breakpoint_modify_event (bpt
->number
);
7366 disable_command (char *args
, int from_tty
)
7368 register struct breakpoint
*bpt
;
7370 ALL_BREAKPOINTS (bpt
)
7374 warning ("attempted to disable apparently deleted breakpoint #%d?",
7379 case bp_catch_unload
:
7381 case bp_catch_vfork
:
7383 case bp_catch_catch
:
7384 case bp_catch_throw
:
7385 case bp_hardware_breakpoint
:
7387 case bp_hardware_watchpoint
:
7388 case bp_read_watchpoint
:
7389 case bp_access_watchpoint
:
7390 disable_breakpoint (bpt
);
7395 map_breakpoint_numbers (args
, disable_breakpoint
);
7399 do_enable_breakpoint (struct breakpoint
*bpt
, enum bpdisp disposition
)
7401 struct frame_info
*save_selected_frame
= NULL
;
7402 int save_selected_frame_level
= -1;
7403 int target_resources_ok
, other_type_used
;
7406 if (bpt
->type
== bp_hardware_breakpoint
)
7409 i
= hw_breakpoint_used_count ();
7410 target_resources_ok
=
7411 TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint
,
7413 if (target_resources_ok
== 0)
7414 error ("No hardware breakpoint support in the target.");
7415 else if (target_resources_ok
< 0)
7416 error ("Hardware breakpoints used exceeds limit.");
7419 if (bpt
->enable
!= permanent
)
7420 bpt
->enable
= enabled
;
7421 bpt
->disposition
= disposition
;
7422 check_duplicates (bpt
);
7423 breakpoints_changed ();
7425 if (bpt
->type
== bp_watchpoint
||
7426 bpt
->type
== bp_hardware_watchpoint
||
7427 bpt
->type
== bp_read_watchpoint
||
7428 bpt
->type
== bp_access_watchpoint
)
7430 if (bpt
->exp_valid_block
!= NULL
)
7432 struct frame_info
*fr
=
7434 /* Ensure that we have the current frame. Else, this
7435 next query may pessimistically be answered as, "No,
7436 not within current scope". */
7437 get_current_frame ();
7438 fr
= find_frame_addr_in_frame_chain (bpt
->watchpoint_frame
);
7442 Cannot enable watchpoint %d because the block in which its expression\n\
7443 is valid is not currently in scope.\n", bpt
->number
);
7444 bpt
->enable
= disabled
;
7448 save_selected_frame
= selected_frame
;
7449 save_selected_frame_level
= selected_frame_level
;
7450 select_frame (fr
, -1);
7453 value_free (bpt
->val
);
7454 mark
= value_mark ();
7455 bpt
->val
= evaluate_expression (bpt
->exp
);
7456 release_value (bpt
->val
);
7457 if (VALUE_LAZY (bpt
->val
))
7458 value_fetch_lazy (bpt
->val
);
7460 if (bpt
->type
== bp_hardware_watchpoint
||
7461 bpt
->type
== bp_read_watchpoint
||
7462 bpt
->type
== bp_access_watchpoint
)
7464 int i
= hw_watchpoint_used_count (bpt
->type
, &other_type_used
);
7465 int mem_cnt
= can_use_hardware_watchpoint (bpt
->val
);
7467 /* Hack around 'unused var' error for some targets here */
7469 target_resources_ok
= TARGET_CAN_USE_HARDWARE_WATCHPOINT (
7470 bpt
->type
, i
+ mem_cnt
, other_type_used
);
7471 /* we can consider of type is bp_hardware_watchpoint, convert to
7472 bp_watchpoint in the following condition */
7473 if (target_resources_ok
< 0)
7476 Cannot enable watchpoint %d because target watch resources\n\
7477 have been allocated for other watchpoints.\n", bpt
->number
);
7478 bpt
->enable
= disabled
;
7479 value_free_to_mark (mark
);
7484 if (save_selected_frame_level
>= 0)
7485 select_frame (save_selected_frame
, save_selected_frame_level
);
7486 value_free_to_mark (mark
);
7488 if (modify_breakpoint_hook
)
7489 modify_breakpoint_hook (bpt
);
7490 breakpoint_modify_event (bpt
->number
);
7494 enable_breakpoint (struct breakpoint
*bpt
)
7496 do_enable_breakpoint (bpt
, bpt
->disposition
);
7499 /* The enable command enables the specified breakpoints (or all defined
7500 breakpoints) so they once again become (or continue to be) effective
7501 in stopping the inferior. */
7505 enable_command (char *args
, int from_tty
)
7507 register struct breakpoint
*bpt
;
7509 ALL_BREAKPOINTS (bpt
)
7513 warning ("attempted to enable apparently deleted breakpoint #%d?",
7518 case bp_catch_unload
:
7520 case bp_catch_vfork
:
7522 case bp_catch_catch
:
7523 case bp_catch_throw
:
7524 case bp_hardware_breakpoint
:
7526 case bp_hardware_watchpoint
:
7527 case bp_read_watchpoint
:
7528 case bp_access_watchpoint
:
7529 enable_breakpoint (bpt
);
7534 map_breakpoint_numbers (args
, enable_breakpoint
);
7538 enable_once_breakpoint (struct breakpoint
*bpt
)
7540 do_enable_breakpoint (bpt
, disable
);
7545 enable_once_command (char *args
, int from_tty
)
7547 map_breakpoint_numbers (args
, enable_once_breakpoint
);
7551 enable_delete_breakpoint (struct breakpoint
*bpt
)
7553 do_enable_breakpoint (bpt
, del
);
7558 enable_delete_command (char *args
, int from_tty
)
7560 map_breakpoint_numbers (args
, enable_delete_breakpoint
);
7563 /* Use default_breakpoint_'s, or nothing if they aren't valid. */
7565 struct symtabs_and_lines
7566 decode_line_spec_1 (char *string
, int funfirstline
)
7568 struct symtabs_and_lines sals
;
7570 error ("Empty line specification.");
7571 if (default_breakpoint_valid
)
7572 sals
= decode_line_1 (&string
, funfirstline
,
7573 default_breakpoint_symtab
,
7574 default_breakpoint_line
,
7577 sals
= decode_line_1 (&string
, funfirstline
,
7578 (struct symtab
*) NULL
, 0, (char ***) NULL
);
7580 error ("Junk at end of line specification: %s", string
);
7585 _initialize_breakpoint (void)
7587 struct cmd_list_element
*c
;
7589 breakpoint_chain
= 0;
7590 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
7591 before a breakpoint is set. */
7592 breakpoint_count
= 0;
7594 add_com ("ignore", class_breakpoint
, ignore_command
,
7595 "Set ignore-count of breakpoint number N to COUNT.\n\
7596 Usage is `ignore N COUNT'.");
7598 add_com_alias ("bc", "ignore", class_breakpoint
, 1);
7600 add_com ("commands", class_breakpoint
, commands_command
,
7601 "Set commands to be executed when a breakpoint is hit.\n\
7602 Give breakpoint number as argument after \"commands\".\n\
7603 With no argument, the targeted breakpoint is the last one set.\n\
7604 The commands themselves follow starting on the next line.\n\
7605 Type a line containing \"end\" to indicate the end of them.\n\
7606 Give \"silent\" as the first line to make the breakpoint silent;\n\
7607 then no output is printed when it is hit, except what the commands print.");
7609 add_com ("condition", class_breakpoint
, condition_command
,
7610 "Specify breakpoint number N to break only if COND is true.\n\
7611 Usage is `condition N COND', where N is an integer and COND is an\n\
7612 expression to be evaluated whenever breakpoint N is reached. ");
7614 c
= add_com ("tbreak", class_breakpoint
, tbreak_command
,
7615 "Set a temporary breakpoint. Args like \"break\" command.\n\
7616 Like \"break\" except the breakpoint is only temporary,\n\
7617 so it will be deleted when hit. Equivalent to \"break\" followed\n\
7618 by using \"enable delete\" on the breakpoint number.");
7619 c
->completer
= location_completer
;
7621 c
= add_com ("txbreak", class_breakpoint
, tbreak_at_finish_command
,
7622 "Set temporary breakpoint at procedure exit. Either there should\n\
7623 be no argument or the argument must be a depth.\n");
7624 c
->completer
= location_completer
;
7626 c
= add_com ("hbreak", class_breakpoint
, hbreak_command
,
7627 "Set a hardware assisted breakpoint. Args like \"break\" command.\n\
7628 Like \"break\" except the breakpoint requires hardware support,\n\
7629 some target hardware may not have this support.");
7630 c
->completer
= location_completer
;
7632 c
= add_com ("thbreak", class_breakpoint
, thbreak_command
,
7633 "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\
7634 Like \"hbreak\" except the breakpoint is only temporary,\n\
7635 so it will be deleted when hit.");
7636 c
->completer
= location_completer
;
7638 add_prefix_cmd ("enable", class_breakpoint
, enable_command
,
7639 "Enable some breakpoints.\n\
7640 Give breakpoint numbers (separated by spaces) as arguments.\n\
7641 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7642 This is used to cancel the effect of the \"disable\" command.\n\
7643 With a subcommand you can enable temporarily.",
7644 &enablelist
, "enable ", 1, &cmdlist
);
7646 add_com ("ab", class_breakpoint
, enable_command
,
7647 "Enable some breakpoints.\n\
7648 Give breakpoint numbers (separated by spaces) as arguments.\n\
7649 With no subcommand, breakpoints are enabled until you command otherwise.\n\
7650 This is used to cancel the effect of the \"disable\" command.\n\
7651 With a subcommand you can enable temporarily.");
7653 add_com_alias ("en", "enable", class_breakpoint
, 1);
7655 add_abbrev_prefix_cmd ("breakpoints", class_breakpoint
, enable_command
,
7656 "Enable some breakpoints.\n\
7657 Give breakpoint numbers (separated by spaces) as arguments.\n\
7658 This is used to cancel the effect of the \"disable\" command.\n\
7659 May be abbreviated to simply \"enable\".\n",
7660 &enablebreaklist
, "enable breakpoints ", 1, &enablelist
);
7662 add_cmd ("once", no_class
, enable_once_command
,
7663 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7664 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7667 add_cmd ("delete", no_class
, enable_delete_command
,
7668 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7669 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7672 add_cmd ("delete", no_class
, enable_delete_command
,
7673 "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
7674 If a breakpoint is hit while enabled in this fashion, it is deleted.",
7677 add_cmd ("once", no_class
, enable_once_command
,
7678 "Enable breakpoints for one hit. Give breakpoint numbers.\n\
7679 If a breakpoint is hit while enabled in this fashion, it becomes disabled.",
7682 add_prefix_cmd ("disable", class_breakpoint
, disable_command
,
7683 "Disable some breakpoints.\n\
7684 Arguments are breakpoint numbers with spaces in between.\n\
7685 To disable all breakpoints, give no argument.\n\
7686 A disabled breakpoint is not forgotten, but has no effect until reenabled.",
7687 &disablelist
, "disable ", 1, &cmdlist
);
7688 add_com_alias ("dis", "disable", class_breakpoint
, 1);
7689 add_com_alias ("disa", "disable", class_breakpoint
, 1);
7691 add_com ("sb", class_breakpoint
, disable_command
,
7692 "Disable some breakpoints.\n\
7693 Arguments are breakpoint numbers with spaces in between.\n\
7694 To disable all breakpoints, give no argument.\n\
7695 A disabled breakpoint is not forgotten, but has no effect until reenabled.");
7697 add_cmd ("breakpoints", class_alias
, disable_command
,
7698 "Disable some breakpoints.\n\
7699 Arguments are breakpoint numbers with spaces in between.\n\
7700 To disable all breakpoints, give no argument.\n\
7701 A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\
7702 This command may be abbreviated \"disable\".",
7705 add_prefix_cmd ("delete", class_breakpoint
, delete_command
,
7706 "Delete some breakpoints or auto-display expressions.\n\
7707 Arguments are breakpoint numbers with spaces in between.\n\
7708 To delete all breakpoints, give no argument.\n\
7710 Also a prefix command for deletion of other GDB objects.\n\
7711 The \"unset\" command is also an alias for \"delete\".",
7712 &deletelist
, "delete ", 1, &cmdlist
);
7713 add_com_alias ("d", "delete", class_breakpoint
, 1);
7715 add_com ("db", class_breakpoint
, delete_command
,
7716 "Delete some breakpoints.\n\
7717 Arguments are breakpoint numbers with spaces in between.\n\
7718 To delete all breakpoints, give no argument.\n");
7720 add_cmd ("breakpoints", class_alias
, delete_command
,
7721 "Delete some breakpoints or auto-display expressions.\n\
7722 Arguments are breakpoint numbers with spaces in between.\n\
7723 To delete all breakpoints, give no argument.\n\
7724 This command may be abbreviated \"delete\".",
7727 add_com ("clear", class_breakpoint
, clear_command
,
7728 concat ("Clear breakpoint at specified line or function.\n\
7729 Argument may be line number, function name, or \"*\" and an address.\n\
7730 If line number is specified, all breakpoints in that line are cleared.\n\
7731 If function is specified, breakpoints at beginning of function are cleared.\n\
7732 If an address is specified, breakpoints at that address are cleared.\n\n",
7733 "With no argument, clears all breakpoints in the line that the selected frame\n\
7736 See also the \"delete\" command which clears breakpoints by number.", NULL
));
7738 c
= add_com ("break", class_breakpoint
, break_command
,
7739 concat ("Set breakpoint at specified line or function.\n\
7740 Argument may be line number, function name, or \"*\" and an address.\n\
7741 If line number is specified, break at start of code for that line.\n\
7742 If function is specified, break at start of code for that function.\n\
7743 If an address is specified, break at that exact address.\n",
7744 "With no arg, uses current execution address of selected stack frame.\n\
7745 This is useful for breaking on return to a stack frame.\n\
7747 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7749 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7750 c
->completer
= location_completer
;
7752 add_com_alias ("b", "break", class_run
, 1);
7753 add_com_alias ("br", "break", class_run
, 1);
7754 add_com_alias ("bre", "break", class_run
, 1);
7755 add_com_alias ("brea", "break", class_run
, 1);
7757 add_com ("xbreak", class_breakpoint
, break_at_finish_command
,
7758 concat ("Set breakpoint at procedure exit. \n\
7759 Argument may be function name, or \"*\" and an address.\n\
7760 If function is specified, break at end of code for that function.\n\
7761 If an address is specified, break at the end of the function that contains \n\
7762 that exact address.\n",
7763 "With no arg, uses current execution address of selected stack frame.\n\
7764 This is useful for breaking on return to a stack frame.\n\
7766 Multiple breakpoints at one place are permitted, and useful if conditional.\n\
7768 Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL
));
7769 add_com_alias ("xb", "xbreak", class_breakpoint
, 1);
7770 add_com_alias ("xbr", "xbreak", class_breakpoint
, 1);
7771 add_com_alias ("xbre", "xbreak", class_breakpoint
, 1);
7772 add_com_alias ("xbrea", "xbreak", class_breakpoint
, 1);
7776 add_com_alias ("ba", "break", class_breakpoint
, 1);
7777 add_com_alias ("bu", "ubreak", class_breakpoint
, 1);
7778 add_com ("bx", class_breakpoint
, break_at_finish_at_depth_command
,
7779 "Set breakpoint at procedure exit. Either there should\n\
7780 be no argument or the argument must be a depth.\n");
7785 add_abbrev_prefix_cmd ("stop", class_breakpoint
, stop_command
,
7786 "Break in function/address or break at a line in the current file.",
7787 &stoplist
, "stop ", 1, &cmdlist
);
7788 add_cmd ("in", class_breakpoint
, stopin_command
,
7789 "Break in function or address.\n", &stoplist
);
7790 add_cmd ("at", class_breakpoint
, stopat_command
,
7791 "Break at a line in the current file.\n", &stoplist
);
7792 add_com ("status", class_info
, breakpoints_info
,
7793 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7794 The \"Type\" column indicates one of:\n\
7795 \tbreakpoint - normal breakpoint\n\
7796 \twatchpoint - watchpoint\n\
7797 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7798 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7799 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7800 address and file/line number respectively.\n\n",
7801 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7802 are set to the address of the last breakpoint listed.\n\n\
7803 Convenience variable \"$bpnum\" contains the number of the last\n\
7804 breakpoint set.", NULL
));
7807 add_info ("breakpoints", breakpoints_info
,
7808 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7809 The \"Type\" column indicates one of:\n\
7810 \tbreakpoint - normal breakpoint\n\
7811 \twatchpoint - watchpoint\n\
7812 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7813 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7814 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7815 address and file/line number respectively.\n\n",
7816 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7817 are set to the address of the last breakpoint listed.\n\n\
7818 Convenience variable \"$bpnum\" contains the number of the last\n\
7819 breakpoint set.", NULL
));
7822 add_com ("lb", class_breakpoint
, breakpoints_info
,
7823 concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
7824 The \"Type\" column indicates one of:\n\
7825 \tbreakpoint - normal breakpoint\n\
7826 \twatchpoint - watchpoint\n\
7827 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7828 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7829 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7830 address and file/line number respectively.\n\n",
7831 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7832 are set to the address of the last breakpoint listed.\n\n\
7833 Convenience variable \"$bpnum\" contains the number of the last\n\
7834 breakpoint set.", NULL
));
7836 add_cmd ("breakpoints", class_maintenance
, maintenance_info_breakpoints
,
7837 concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\
7838 The \"Type\" column indicates one of:\n\
7839 \tbreakpoint - normal breakpoint\n\
7840 \twatchpoint - watchpoint\n\
7841 \tlongjmp - internal breakpoint used to step through longjmp()\n\
7842 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
7843 \tuntil - internal breakpoint used by the \"until\" command\n\
7844 \tfinish - internal breakpoint used by the \"finish\" command\n",
7845 "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
7846 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
7847 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
7848 address and file/line number respectively.\n\n",
7849 "Convenience variable \"$_\" and default examine address for \"x\"\n\
7850 are set to the address of the last breakpoint listed.\n\n\
7851 Convenience variable \"$bpnum\" contains the number of the last\n\
7852 breakpoint set.", NULL
),
7853 &maintenanceinfolist
);
7855 add_com ("catch", class_breakpoint
, catch_command
,
7856 "Set catchpoints to catch events.\n\
7857 Raised signals may be caught:\n\
7858 \tcatch signal - all signals\n\
7859 \tcatch signal <signame> - a particular signal\n\
7860 Raised exceptions may be caught:\n\
7861 \tcatch throw - all exceptions, when thrown\n\
7862 \tcatch throw <exceptname> - a particular exception, when thrown\n\
7863 \tcatch catch - all exceptions, when caught\n\
7864 \tcatch catch <exceptname> - a particular exception, when caught\n\
7865 Thread or process events may be caught:\n\
7866 \tcatch thread_start - any threads, just after creation\n\
7867 \tcatch thread_exit - any threads, just before expiration\n\
7868 \tcatch thread_join - any threads, just after joins\n\
7869 Process events may be caught:\n\
7870 \tcatch start - any processes, just after creation\n\
7871 \tcatch exit - any processes, just before expiration\n\
7872 \tcatch fork - calls to fork()\n\
7873 \tcatch vfork - calls to vfork()\n\
7874 \tcatch exec - calls to exec()\n\
7875 Dynamically-linked library events may be caught:\n\
7876 \tcatch load - loads of any library\n\
7877 \tcatch load <libname> - loads of a particular library\n\
7878 \tcatch unload - unloads of any library\n\
7879 \tcatch unload <libname> - unloads of a particular library\n\
7880 The act of your program's execution stopping may also be caught:\n\
7882 C++ exceptions may be caught:\n\
7883 \tcatch throw - all exceptions, when thrown\n\
7884 \tcatch catch - all exceptions, when caught\n\
7886 Do \"help set follow-fork-mode\" for info on debugging your program\n\
7887 after a fork or vfork is caught.\n\n\
7888 Do \"help breakpoints\" for info on other commands dealing with breakpoints.");
7890 add_com ("tcatch", class_breakpoint
, tcatch_command
,
7891 "Set temporary catchpoints to catch events.\n\
7892 Args like \"catch\" command.\n\
7893 Like \"catch\" except the catchpoint is only temporary,\n\
7894 so it will be deleted when hit. Equivalent to \"catch\" followed\n\
7895 by using \"enable delete\" on the catchpoint number.");
7897 c
= add_com ("watch", class_breakpoint
, watch_command
,
7898 "Set a watchpoint for an expression.\n\
7899 A watchpoint stops execution of your program whenever the value of\n\
7900 an expression changes.");
7901 c
->completer
= location_completer
;
7903 c
= add_com ("rwatch", class_breakpoint
, rwatch_command
,
7904 "Set a read watchpoint for an expression.\n\
7905 A watchpoint stops execution of your program whenever the value of\n\
7906 an expression is read.");
7907 c
->completer
= location_completer
;
7909 c
= add_com ("awatch", class_breakpoint
, awatch_command
,
7910 "Set a watchpoint for an expression.\n\
7911 A watchpoint stops execution of your program whenever the value of\n\
7912 an expression is either read or written.");
7913 c
->completer
= location_completer
;
7915 add_info ("watchpoints", breakpoints_info
,
7916 "Synonym for ``info breakpoints''.");
7919 c
= add_set_cmd ("can-use-hw-watchpoints", class_support
, var_zinteger
,
7920 (char *) &can_use_hw_watchpoints
,
7921 "Set debugger's willingness to use watchpoint hardware.\n\
7922 If zero, gdb will not use hardware for new watchpoints, even if\n\
7923 such is available. (However, any hardware watchpoints that were\n\
7924 created before setting this to nonzero, will continue to use watchpoint\n\
7927 add_show_from_set (c
, &showlist
);
7929 can_use_hw_watchpoints
= 1;