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use xfs.h, remove all traces of SIM, push extern declarations into headers,
dead code removal.

/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 * 
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 * 
 * http://www.sgi.com 
 * 
 * For further information regarding this notice, see: 
 * 
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef __XFS_OS_DEFS_H__
#define __XFS_OS_DEFS_H__

#include <linux/xfs_linux.h>
#include <xfs_arch.h>
#include <asm/div64.h>

typedef __u64    xfs_off_t;
typedef __s32    xfs32_off_t;
typedef	__u64    xfs_ino_t;	/* <inode> type */
typedef	__s64    xfs_daddr_t;	/* <disk address> type */
typedef	char *	 xfs_caddr_t;	/* <core address> type */
typedef off_t	linux_off_t;
typedef __kernel_ino_t	linux_ino_t;
typedef __uint32_t	xfs_dev_t;

#undef bzero
#define bzero(p,s) memset((p), 0, (s))

#undef bcopy
#define bcopy(s,d,n) memcpy((d),(s),(n))

#define bcmp(s1,s2,l) memcmp(s1,s2,l)    


/* Move the kernel do_div definition off to one side */
static inline __u32 xfs_do_div(void *a, __u32 b, int n)
{
	__u32	mod;

	switch (n) {
		case 4:
			mod = *(__u32 *)a % b;
			*(__u32 *)a = *(__u32 *)a / b;
			return mod;
		case 8:
			mod = do_div(*(__u64 *)a, b);
			return mod;
	}

	/* NOTREACHED */
	return 0;
}

/* Side effect free 64 bit mod operation */
static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
{
	switch (n) {
		case 4:
			return *(__u32 *)a % b;
		case 8:
			{
			__u64	c = *(__u64 *)a;
			return do_div(c, b);
			}
	}

	/* NOTREACHED */
	return 0;
}

#undef do_div
#define do_div(a, b)	xfs_do_div(&(a), (b), sizeof(a))
#define do_mod(a, b)	xfs_do_mod(&(a), (b), sizeof(a))

#define XFS_kmem_realloc(ptr,new,old,flag) kmem_realloc(ptr,new,old,flag)

#endif	/* __XFS_OS_DEFS_H__ */