| /* |
| * 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 <endian.h> |
| # include <byteswap.h> |
| #else |
| # include <machine/endian.h> |
| # 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 <asm/byteorder.h> |
| /* 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 |
