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