swap.h

/*
 * Copyright (c) 2012 Dave Vasilevsky <dave@vasilevsky.ca>
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
 */
#ifndef SQFS_SWAP_H
#define SQFS_SWAP_H

#include "common.h"
#include "squashfs_fs.h"
#ifdef HAVE_ASM_BYTEORDER_H
#include <asm/byteorder.h>
#endif

#define SQFS_MAGIC_SWAP 0x68737173

void sqfs_swap16(uint16_t *n);

#ifdef HAVE_ASM_BYTEORDER_H
static inline void sqfs_swapin16(uint16_t *v) {
    *v = __le16_to_cpu(*v);
}
static inline void sqfs_swapin32(uint32_t *v) {
    *v = __le32_to_cpu(*v);
}
static inline void sqfs_swapin64(uint64_t *v) {
    *v = __le64_to_cpu(*v);
}
#else
void sqfs_swapin16(uint16_t *v);
void sqfs_swapin32(uint32_t *v);
void sqfs_swapin64(uint64_t *v);
#endif

static inline void sqfs_swapin16_internal(__le16 *v) {
	sqfs_swapin16((uint16_t*)v);
}
static inline void sqfs_swapin32_internal(__le32 *v) {
	sqfs_swapin32((uint32_t*)v);
}
static inline void sqfs_swapin64_internal(__le64 *v) {
	sqfs_swapin64((uint64_t*)v);
}

#include "swap.h.inc"

#endif