Source to bsd/ppc/setjmp.h

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)setjmp.h	8.2 (Berkeley) 1/21/94
 */
/* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
 *
 *	File:	ppc/setjmp.h
 *
 *	Declaration of setjmp routines and data structures.
 */
#ifndef _BSD_PPC_SETJMP_H_
#define _BSD_PPC_SETJMP_H_

#include <sys/cdefs.h>
#include <machine/signal.h>

struct _jmp_buf {
	struct sigcontext	sigcontext; /* kernel state preserved by set/longjmp */
	unsigned long vmask __attribute__((aligned(8))); /* vector mask register */
	unsigned long vreg[32 * 4] __attribute__((aligned(16)));
		/* 32 128-bit vector registers */
};

/*
 *	_JBLEN is number of ints required to save the following:
 *	r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 ints
 *	fr14 -  fr31 = 18 doubles = 36 ints
 *	vmask, 32 vector registers = 129 ints
 *	2 ints to get all the elements aligned 
 */

#define _JBLEN (26 + 36 + 129 + 1)

#if defined(_KERNEL)
typedef struct sigcontext jmp_buf[1];
typedef struct __sigjmp_buf {
		int __storage[_JBLEN + 1] __attribute__((aligned(8)));
		} sigjmp_buf[1];
#else
typedef int jmp_buf[_JBLEN];
typedef int sigjmp_buf[_JBLEN + 1];
#endif

__BEGIN_DECLS
extern int setjmp __P((jmp_buf env));
extern void longjmp __P((jmp_buf env, int val));

#ifndef _ANSI_SOURCE
int sigsetjmp __P((sigjmp_buf env, int val));
void siglongjmp __P((sigjmp_buf env, int val));
#endif /* _ANSI_SOURCE  */

#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
int	_setjmp __P((jmp_buf env));
void	_longjmp __P((jmp_buf, int val));
void	longjmperror __P((void));
#endif /* neither ANSI nor POSIX */
__END_DECLS

#endif /* !_BSD_PPC_SETJMP_H_ */