sysdeps/i386/bits/setjmp.h

   1 /* Copyright (C) 1997, 1998, 2000, 2001, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* Define the machine-dependent type `jmp_buf'.  Intel 386 version.  */
  20 #ifndef _BITS_SETJMP_H
  21 #define _BITS_SETJMP_H  1
  22
  23 #if !defined _SETJMP_H && !defined _PTHREAD_H
  24 # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  25 #endif
  26
  27 #if defined __USE_MISC || defined _ASM
  28 # define JB_BX  0
  29 # define JB_SI  1
  30 # define JB_DI  2
  31 # define JB_BP  3
  32 # define JB_SP  4
  33 # define JB_PC  5
  34 # define JB_SIZE 24
  35 #endif
  36
  37 #ifndef _ASM
  38 typedef int __jmp_buf[6];
  39 #endif
  40
  41 /* Test if longjmp to JMPBUF would unwind the frame
  42    containing a local variable at ADDRESS.  */
  43 #define _JMPBUF_UNWINDS(jmpbuf, address) \
  44   ((void *) (address) < (void *) (jmpbuf)[JB_SP])
  45
  46 #endif  /* bits/setjmp.h */