| 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 */ |