/* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU Lesser General Public License v.2.1. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef _LVM_XLATE_H #define _LVM_XLATE_H #ifdef __linux__ # include # include #else # include # define bswap_16(x) (((x) & 0x00ffU) << 8 | \ ((x) & 0xff00U) >> 8) # define bswap_32(x) (((x) & 0x000000ffU) << 24 | \ ((x) & 0xff000000U) >> 24 | \ ((x) & 0x0000ff00U) << 8 | \ ((x) & 0x00ff0000U) >> 8) # define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \ ((x) & 0xff00000000000000ULL) >> 56 | \ ((x) & 0x000000000000ff00ULL) << 40 | \ ((x) & 0x00ff000000000000ULL) >> 40 | \ ((x) & 0x0000000000ff0000ULL) << 24 | \ ((x) & 0x0000ff0000000000ULL) >> 24 | \ ((x) & 0x00000000ff000000ULL) << 8 | \ ((x) & 0x000000ff00000000ULL) >> 8) #endif #if BYTE_ORDER == LITTLE_ENDIAN /* New clearer variants. */ #define le16_to_cpu(x) (x) #define le32_to_cpu(x) (x) #define le64_to_cpu(x) (x) #define cpu_to_le16(x) (x) #define cpu_to_le32(x) (x) #define cpu_to_le64(x) (x) #define be16_to_cpu(x) bswap_16(x) #define be32_to_cpu(x) bswap_32(x) #define be64_to_cpu(x) bswap_64(x) #define cpu_to_be16(x) bswap_16(x) #define cpu_to_be32(x) bswap_32(x) #define cpu_to_be64(x) bswap_64(x) /* Old alternative variants. */ #define xlate16(x) (x) #define xlate32(x) (x) #define xlate64(x) (x) #define xlate16_be(x) bswap_16(x) #define xlate32_be(x) bswap_32(x) #define xlate64_be(x) bswap_64(x) #elif BYTE_ORDER == BIG_ENDIAN /* New clearer variants. */ #define le16_to_cpu(x) bswap_16(x) #define le32_to_cpu(x) bswap_32(x) #define le64_to_cpu(x) bswap_64(x) #define cpu_to_le16(x) bswap_16(x) #define cpu_to_le32(x) bswap_32(x) #define cpu_to_le64(x) bswap_64(x) #define be16_to_cpu(x) (x) #define be32_to_cpu(x) (x) #define be64_to_cpu(x) (x) #define cpu_to_be16(x) (x) #define cpu_to_be32(x) (x) #define cpu_to_be64(x) (x) /* Old alternative variants. */ #define xlate16(x) bswap_16(x) #define xlate32(x) bswap_32(x) #define xlate64(x) bswap_64(x) #define xlate16_be(x) (x) #define xlate32_be(x) (x) #define xlate64_be(x) (x) #else #include /* New clearer variants. */ #define le16_to_cpu(x) __le16_to_cpu(x) #define le32_to_cpu(x) __le32_to_cpu(x) #define le64_to_cpu(x) __le64_to_cpu(x) #define cpu_to_le16(x) __cpu_to_le16(x) #define cpu_to_le32(x) __cpu_to_le32(x) #define cpu_to_le64(x) __cpu_to_le64(x) #define be16_to_cpu(x) __be16_to_cpu(x) #define be32_to_cpu(x) __be32_to_cpu(x) #define be64_to_cpu(x) __be64_to_cpu(x) #define cpu_to_be16(x) __cpu_to_be16(x) #define cpu_to_be32(x) __cpu_to_be32(x) #define cpu_to_be64(x) __cpu_to_be64(x) /* Old alternative variants. */ #define xlate16(x) __cpu_to_le16(x) #define xlate32(x) __cpu_to_le32(x) #define xlate64(x) __cpu_to_le64(x) #define xlate16_be(x) __cpu_to_be16(x) #define xlate32_be(x) __cpu_to_be32(x) #define xlate64_be(x) __cpu_to_be64(x) #endif #endif