glibc/sysdeps/hppa/bits/setjmp.h
2000-10-15 03:25:11 +00:00

42 lines
1.6 KiB
C

/* Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Define the machine-dependent type `jmp_buf'. HPPA version. */
#ifndef _SETJMP_H
# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
#endif
/* The previous bits/setjmp.h had __jmp_buf defined as a structure.
We use an array of 'double' instead, to make writing the assembler
easier, and to ensure proper alignment. Naturally, user code should
not depend on either representation. */
#if defined __USE_MISC || defined _ASM
#define JB_SP (76/4)
#endif
#ifndef _ASM
typedef double __jmp_buf[21];
#endif
/* Test if longjmp to JMPBUF would unwind the frame containing a local
variable at ADDRESS. */
#define _JMPBUF_UNWINDS(_jmpbuf, _address) \
((void *)(_address) > (void *)(((unsigned long *) _jmpbuf)[JB_SP]))