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Diffstat (limited to 'lib/libspl/include/os/freebsd/sys/byteorder.h')
| -rw-r--r-- | lib/libspl/include/os/freebsd/sys/byteorder.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/lib/libspl/include/os/freebsd/sys/byteorder.h b/lib/libspl/include/os/freebsd/sys/byteorder.h new file mode 100644 index 0000000000000..cd692d3616e0a --- /dev/null +++ b/lib/libspl/include/os/freebsd/sys/byteorder.h @@ -0,0 +1,192 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ +/* All Rights Reserved */ + +/* + * University Copyright- Copyright (c) 1982, 1986, 1988 + * The Regents of the University of California + * All Rights Reserved + * + * University Acknowledgment- Portions of this document are derived from + * software developed by the University of California, Berkeley, and its + * contributors. + */ + +#ifndef _SYS_BYTEORDER_H +#define _SYS_BYTEORDER_H + +#include <sys/endian.h> +#include <netinet/in.h> +#include <sys/isa_defs.h> +#include <sys/int_types.h> + +#if defined(__GNUC__) && defined(_ASM_INLINES) && \ + (defined(__i386) || defined(__amd64)) +#include <asm/byteorder.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * macros for conversion between host and (internet) network byte order + */ +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) + +/* + * Macros to reverse byte order + */ +#define BSWAP_8(x) ((x) & 0xff) +#define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) +#define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) +#define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) + +#define BMASK_8(x) ((x) & 0xff) +#define BMASK_16(x) ((x) & 0xffff) +#define BMASK_32(x) ((x) & 0xffffffff) +#define BMASK_64(x) (x) + +/* + * Macros to convert from a specific byte order to/from native byte order + */ +#ifdef _ZFS_BIG_ENDIAN +#define BE_8(x) BMASK_8(x) +#define BE_16(x) BMASK_16(x) +#define BE_32(x) BMASK_32(x) +#define BE_64(x) BMASK_64(x) +#define LE_8(x) BSWAP_8(x) +#define LE_16(x) BSWAP_16(x) +#define LE_32(x) BSWAP_32(x) +#define LE_64(x) BSWAP_64(x) +#else +#define LE_8(x) BMASK_8(x) +#define LE_16(x) BMASK_16(x) +#define LE_32(x) BMASK_32(x) +#define LE_64(x) BMASK_64(x) +#define BE_8(x) BSWAP_8(x) +#define BE_16(x) BSWAP_16(x) +#define BE_32(x) BSWAP_32(x) +#define BE_64(x) BSWAP_64(x) +#endif + +#ifdef _ZFS_BIG_ENDIAN +static __inline__ uint64_t +htonll(uint64_t n) +{ + return (n); +} + +static __inline__ uint64_t +ntohll(uint64_t n) +{ + return (n); +} +#else +static __inline__ uint64_t +htonll(uint64_t n) +{ + return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32)); +} + +static __inline__ uint64_t +ntohll(uint64_t n) +{ + return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32)); +} +#endif + +/* + * Macros to read unaligned values from a specific byte order to + * native byte order + */ + +#define BE_IN8(xa) \ + *((uint8_t *)(xa)) + +#define BE_IN16(xa) \ + (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa)+1)) + +#define BE_IN32(xa) \ + (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa)+2)) + +#define BE_IN64(xa) \ + (((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa)+4)) + +#define LE_IN8(xa) \ + *((uint8_t *)(xa)) + +#define LE_IN16(xa) \ + (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa)) + +#define LE_IN32(xa) \ + (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa)) + +#define LE_IN64(xa) \ + (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa)) + +/* + * Macros to write unaligned values from native byte order to a specific byte + * order. + */ + +#define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); + +#define BE_OUT16(xa, yv) \ + BE_OUT8((uint8_t *)(xa) + 1, yv); \ + BE_OUT8((uint8_t *)(xa), (yv) >> 8); + +#define BE_OUT32(xa, yv) \ + BE_OUT16((uint8_t *)(xa) + 2, yv); \ + BE_OUT16((uint8_t *)(xa), (yv) >> 16); + +#define BE_OUT64(xa, yv) \ + BE_OUT32((uint8_t *)(xa) + 4, yv); \ + BE_OUT32((uint8_t *)(xa), (yv) >> 32); + +#define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); + +#define LE_OUT16(xa, yv) \ + LE_OUT8((uint8_t *)(xa), yv); \ + LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8); + +#define LE_OUT32(xa, yv) \ + LE_OUT16((uint8_t *)(xa), yv); \ + LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16); + +#define LE_OUT64(xa, yv) \ + LE_OUT32((uint8_t *)(xa), yv); \ + LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32); + +#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_BYTEORDER_H */ |