1/*	$NetBSD: endian_machdep.h,v 1.3 2013/05/23 21:39:49 christos Exp $	*/
 2
 3/*-
 4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
 5 * All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef _BYTE_ORDER
29# error  Define MIPS target CPU endian-ness in port-specific header file.
30#endif
31
32#ifdef _LOCORE
33
34/*
35 *   Endian-independent assembly-code aliases for unaligned memory accesses.
36 */
37#if _BYTE_ORDER == _LITTLE_ENDIAN
38# define LWHI lwr
39# define LWLO lwl
40# define SWHI swr
41# define SWLO swl
42# if SZREG == 4
43#  define REG_LHI   lwr
44#  define REG_LLO   lwl
45#  define REG_SHI   swr
46#  define REG_SLO   swl
47# else
48#  define REG_LHI   ldr
49#  define REG_LLO   ldl
50#  define REG_SHI   sdr
51#  define REG_SLO   sdl
52# endif
53#endif
54
55#if _BYTE_ORDER == _BIG_ENDIAN
56# define LWHI lwl
57# define LWLO lwr
58# define SWHI swl
59# define SWLO swr
60# if SZREG == 4
61#  define REG_LHI   lwl
62#  define REG_LLO   lwr
63#  define REG_SHI   swl
64#  define REG_SLO   swr
65# else
66#  define REG_LHI   ldl
67#  define REG_LLO   ldr
68#  define REG_SHI   sdl
69#  define REG_SLO   sdr
70# endif
71#endif
72
73#endif /* LOCORE */