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Diffstat (limited to 'libc/include/sys/endian.h')
-rw-r--r-- | libc/include/sys/endian.h | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/libc/include/sys/endian.h b/libc/include/sys/endian.h deleted file mode 100644 index 00f4839..0000000 --- a/libc/include/sys/endian.h +++ /dev/null @@ -1,273 +0,0 @@ -/* $OpenBSD: endian.h,v 1.17 2006/01/06 18:53:05 millert Exp $ */ - -/*- - * Copyright (c) 1997 Niklas Hallqvist. 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 ``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 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. - */ - -/* - * Generic definitions for little- and big-endian systems. Other endianesses - * has to be dealt with in the specific machine/endian.h file for that port. - * - * This file is meant to be included from a little- or big-endian port's - * machine/endian.h after setting _BYTE_ORDER to either 1234 for little endian - * or 4321 for big.. - */ - -#ifndef _SYS_ENDIAN_H_ -#define _SYS_ENDIAN_H_ - -#include <sys/cdefs.h> -#include <machine/_types.h> - -#define _LITTLE_ENDIAN 1234 -#define _BIG_ENDIAN 4321 -#define _PDP_ENDIAN 3412 - -#if __BSD_VISIBLE -#define LITTLE_ENDIAN _LITTLE_ENDIAN -#define BIG_ENDIAN _BIG_ENDIAN -#define PDP_ENDIAN _PDP_ENDIAN -#define BYTE_ORDER _BYTE_ORDER -#endif - -#ifdef __GNUC__ - -#define __swap16gen(x) __statement({ \ - __uint16_t __swap16gen_x = (x); \ - \ - (__uint16_t)((__swap16gen_x & 0xff) << 8 | \ - (__swap16gen_x & 0xff00) >> 8); \ -}) - -#define __swap32gen(x) __statement({ \ - __uint32_t __swap32gen_x = (x); \ - \ - (__uint32_t)((__swap32gen_x & 0xff) << 24 | \ - (__swap32gen_x & 0xff00) << 8 | \ - (__swap32gen_x & 0xff0000) >> 8 | \ - (__swap32gen_x & 0xff000000) >> 24); \ -}) - -#define __swap64gen(x) __statement({ \ - __uint64_t __swap64gen_x = (x); \ - \ - (__uint64_t)((__swap64gen_x & 0xff) << 56 | \ - (__swap64gen_x & 0xff00ULL) << 40 | \ - (__swap64gen_x & 0xff0000ULL) << 24 | \ - (__swap64gen_x & 0xff000000ULL) << 8 | \ - (__swap64gen_x & 0xff00000000ULL) >> 8 | \ - (__swap64gen_x & 0xff0000000000ULL) >> 24 | \ - (__swap64gen_x & 0xff000000000000ULL) >> 40 | \ - (__swap64gen_x & 0xff00000000000000ULL) >> 56); \ -}) - -#else /* __GNUC__ */ - -/* Note that these macros evaluate their arguments several times. */ -#define __swap16gen(x) \ - (__uint16_t)(((__uint16_t)(x) & 0xff) << 8 | ((__uint16_t)(x) & 0xff00) >> 8) - -#define __swap32gen(x) \ - (__uint32_t)(((__uint32_t)(x) & 0xff) << 24 | \ - ((__uint32_t)(x) & 0xff00) << 8 | ((__uint32_t)(x) & 0xff0000) >> 8 |\ - ((__uint32_t)(x) & 0xff000000) >> 24) - -#define __swap64gen(x) \ - (__uint64_t)((((__uint64_t)(x) & 0xff) << 56) | \ - ((__uint64_t)(x) & 0xff00ULL) << 40 | \ - ((__uint64_t)(x) & 0xff0000ULL) << 24 | \ - ((__uint64_t)(x) & 0xff000000ULL) << 8 | \ - ((__uint64_t)(x) & 0xff00000000ULL) >> 8 | \ - ((__uint64_t)(x) & 0xff0000000000ULL) >> 24 | \ - ((__uint64_t)(x) & 0xff000000000000ULL) >> 40 | \ - ((__uint64_t)(x) & 0xff00000000000000ULL) >> 56) - -#endif /* __GNUC__ */ - -/* - * Define MD_SWAP if you provide swap{16,32}md functions/macros that are - * optimized for your architecture, These will be used for swap{16,32} - * unless the argument is a constant and we are using GCC, where we can - * take advantage of the CSE phase much better by using the generic version. - */ -#ifdef MD_SWAP -#if __GNUC__ - -#define __swap16(x) __statement({ \ - __uint16_t __swap16_x = (x); \ - \ - __builtin_constant_p(x) ? __swap16gen(__swap16_x) : \ - __swap16md(__swap16_x); \ -}) - -#define __swap32(x) __statement({ \ - __uint32_t __swap32_x = (x); \ - \ - __builtin_constant_p(x) ? __swap32gen(__swap32_x) : \ - __swap32md(__swap32_x); \ -}) - -#define __swap64(x) __statement({ \ - __uint64_t __swap64_x = (x); \ - \ - __builtin_constant_p(x) ? __swap64gen(__swap64_x) : \ - __swap64md(__swap64_x); \ -}) - -#endif /* __GNUC__ */ - -#else /* MD_SWAP */ -#define __swap16 __swap16gen -#define __swap32 __swap32gen -#define __swap64 __swap64gen -#endif /* MD_SWAP */ - -#define __swap16_multi(v, n) do { \ - __size_t __swap16_multi_n = (n); \ - __uint16_t *__swap16_multi_v = (v); \ - \ - while (__swap16_multi_n) { \ - *__swap16_multi_v = swap16(*__swap16_multi_v); \ - __swap16_multi_v++; \ - __swap16_multi_n--; \ - } \ -} while (0) - -#if __BSD_VISIBLE -#define swap16 __swap16 -#define swap32 __swap32 -#define swap64 __swap64 -#define swap16_multi __swap16_multi - -__BEGIN_DECLS -__uint64_t htobe64(__uint64_t); -__uint32_t htobe32(__uint32_t); -__uint16_t htobe16(__uint16_t); -__uint64_t betoh64(__uint64_t); -__uint32_t betoh32(__uint32_t); -__uint16_t betoh16(__uint16_t); - -__uint64_t htole64(__uint64_t); -__uint32_t htole32(__uint32_t); -__uint16_t htole16(__uint16_t); -__uint64_t letoh64(__uint64_t); -__uint32_t letoh32(__uint32_t); -__uint16_t letoh16(__uint16_t); -__END_DECLS -#endif /* __BSD_VISIBLE */ - -#if _BYTE_ORDER == _LITTLE_ENDIAN - -/* Can be overridden by machine/endian.h before inclusion of this file. */ -#ifndef _QUAD_HIGHWORD -#define _QUAD_HIGHWORD 1 -#endif -#ifndef _QUAD_LOWWORD -#define _QUAD_LOWWORD 0 -#endif - -#if __BSD_VISIBLE -#define htobe16 __swap16 -#define htobe32 __swap32 -#define htobe64 __swap64 -#define betoh16 __swap16 -#define betoh32 __swap32 -#define betoh64 __swap64 - -#define htole16(x) (x) -#define htole32(x) (x) -#define htole64(x) (x) -#define letoh16(x) (x) -#define letoh32(x) (x) -#define letoh64(x) (x) -#endif /* __BSD_VISIBLE */ - -#define htons(x) __swap16(x) -#define htonl(x) __swap32(x) -#define ntohs(x) __swap16(x) -#define ntohl(x) __swap32(x) - -/* Bionic additions */ -#define ntohq(x) __swap64(x) -#define htonq(x) __swap64(x) - -#define __LITTLE_ENDIAN_BITFIELD - -#endif /* _BYTE_ORDER */ - -#if _BYTE_ORDER == _BIG_ENDIAN - -/* Can be overridden by machine/endian.h before inclusion of this file. */ -#ifndef _QUAD_HIGHWORD -#define _QUAD_HIGHWORD 0 -#endif -#ifndef _QUAD_LOWWORD -#define _QUAD_LOWWORD 1 -#endif - -#if __BSD_VISIBLE -#define htole16 __swap16 -#define htole32 __swap32 -#define htole64 __swap64 -#define letoh16 __swap16 -#define letoh32 __swap32 -#define letoh64 __swap64 - -#define htobe16(x) (x) -#define htobe32(x) (x) -#define htobe64(x) (x) -#define betoh16(x) (x) -#define betoh32(x) (x) -#define betoh64(x) (x) -#endif /* __BSD_VISIBLE */ - -#define htons(x) (x) -#define htonl(x) (x) -#define ntohs(x) (x) -#define ntohl(x) (x) - -/* Bionic additions */ -#define ntohq(x) (x) -#define htonq(x) (x) - -#define __BIG_ENDIAN_BITFIELD - -#endif /* _BYTE_ORDER */ - -#if __BSD_VISIBLE -#define NTOHL(x) (x) = ntohl((u_int32_t)(x)) -#define NTOHS(x) (x) = ntohs((u_int16_t)(x)) -#define HTONL(x) (x) = htonl((u_int32_t)(x)) -#define HTONS(x) (x) = htons((u_int16_t)(x)) -#endif - - -#define __BYTE_ORDER _BYTE_ORDER -#ifndef __LITTLE_ENDIAN -#define __LITTLE_ENDIAN _LITTLE_ENDIAN -#endif -#ifndef __BIG_ENDIAN -#define __BIG_ENDIAN _BIG_ENDIAN -#endif - -#endif /* _SYS_ENDIAN_H_ */ |