/*
 * Copyright (c) 1999-2004 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
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 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1991 NeXT Software, Inc.  All rights reserved.
 *
 *	File:	architecture/ppc/cframe.h
 *	Author:	Mike DeMoney, NeXT Software, Inc.
 *
 *	This include file defines C calling sequence defines
 *	for ppc port.
 *
 * HISTORY
 * 20-May-97  Umesh Vaishampayan  (umeshv@apple.com)
 *	Added C_RED_ZONE.
 * 29-Dec-96  Umesh Vaishampayan  (umeshv@NeXT.com)
 *	Ported from m98k.
 * 11-June-91  Mike DeMoney (mike@next.com)
 *	Created.
 */

#ifndef	_ARCH_PPC_CFRAME_H_
#define	_ARCH_PPC_CFRAME_H_

/* Note that these values are copies of the somewhat more authoritative
 * values in <architecture/ppc/mode_independent_asm.h>.  We do not
 * include that file to avoid breaking legacy clients due to name
 * collisions.
 *
 * Note also that C_ARGSAVE_LEN isn't well defined or useful in PPC.
 * Most legacy uses of it are assuming it is the minimum stack frame
 * size, which is what we define it to be.
 */
#if defined (__ppc64__)
#define	C_ARGSAVE_LEN	64      /* "minimum arg save area" (but see above) */
#define	C_STACK_ALIGN	32      /* stack must be 32 byte aligned */
#define	C_RED_ZONE      320     /* 320 bytes to skip over saved registers */
#else
#define	C_ARGSAVE_LEN	32      /* "minimum arg save area" (but see above) */
#define	C_STACK_ALIGN	16      /* stack must be 16 byte aligned */
#define	C_RED_ZONE      224     /* 224 bytes to skip over saved registers */
#endif

#endif	/* _ARCH_PPC_CFRAME_H_ */