1/*	$OpenBSD: endian.h,v 1.5 2006/02/27 23:35:59 miod Exp $ */
2
3/*
4 * Copyright (c) 2001-2002 Opsycon AB  (www.opsycon.se / www.opsycon.com)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#ifndef _MIPS64_ENDIAN_H_
30#define _MIPS64_ENDIAN_H_
31
32#ifdef __GNUC__
33
34#if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
35#define __swap16md(x) ({					\
36    register uint16_t _x = (x);					\
37    register uint16_t _r;					\
38    __asm volatile ("wsbh %0, %1" : "=r" (_r) : "r" (_x));	\
39    _r;								\
40})
41
42#define __swap32md(x) ({					\
43    register uint32_t _x = (x);					\
44    register uint32_t _r;					\
45    __asm volatile ("wsbh %0, %1; rotr %0, %0, 16" : "=r" (_r) : "r" (_x)); \
46    _r;								\
47})
48
49#define __swap64md(x) ({					\
50    uint64_t _swap64md_x = (x);					\
51    (uint64_t) __swap32md(_swap64md_x >> 32) |			\
52        (uint64_t) __swap32md(_swap64md_x & 0xffffffff) << 32;	\
53})
54
55/* Tell sys/endian.h we have MD variants of the swap macros.  */
56#define MD_SWAP
57
58#endif  /* __mips32r2__ */
59#endif  /* __GNUC__ */
60
61#if defined(__MIPSEB__)
62#define _BYTE_ORDER _BIG_ENDIAN
63#else
64#define _BYTE_ORDER _LITTLE_ENDIAN
65#endif
66#define __STRICT_ALIGNMENT
67#include <sys/types.h>
68#include <sys/endian.h>
69
70#endif /* _MIPS64_ENDIAN_H_ */
71