62 lines
2 KiB
C
62 lines
2 KiB
C
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/* tag: byteorder prototypes
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*
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* Copyright (C) 2004 Stefan Reinauer
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*
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* see the file "COPYING" for further information about
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* the copyright and warranty status of this work.
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*/
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#ifndef __BYTEORDER_H
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#define __BYTEORDER_H
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#define __bswap32(x) \
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((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
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(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
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#define __bswap16(x) ((((x) & 0xff00) >> 8) | (((x) & 0x00ff) << 8))
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#define __bswap64(x) ( (__bswap32( (x) >> 32)) | \
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(__bswap32((x) & 0xffffffff) << 32) )
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#ifdef CONFIG_LITTLE_ENDIAN
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#define __cpu_to_le64(x) ((u64) (x))
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#define __le64_to_cpu(x) ((u64) (x))
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#define __cpu_to_le32(x) ((u32) (x))
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#define __le32_to_cpu(x) ((u32) (x))
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#define __cpu_to_le16(x) ((u16) (x))
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#define __le16_to_cpu(x) ((u16) (x))
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#define __cpu_to_be64(x) (__bswap64((u64) (x)))
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#define __be64_to_cpu(x) (__bswap64((u64) (x)))
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#define __cpu_to_be32(x) (__bswap32((u32) (x)))
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#define __be32_to_cpu(x) (__bswap32((u32) (x)))
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#define __cpu_to_be16(x) (__bswap16((u16) (x)))
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#define __be16_to_cpu(x) (__bswap16((u16) (x)))
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#endif
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#ifdef CONFIG_BIG_ENDIAN
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#define __cpu_to_le64(x) (__bswap64((u64) (x)))
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#define __le64_to_cpu(x) (__bswap64((u64) (x)))
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#define __cpu_to_le32(x) (__bswap32((u32) (x)))
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#define __le32_to_cpu(x) (__bswap32((u32) (x)))
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#define __cpu_to_le16(x) (__bswap16((u16) (x)))
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#define __le16_to_cpu(x) (__bswap16((u16) (x)))
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#define __cpu_to_be64(x) ((u64) (x))
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#define __be64_to_cpu(x) ((u64) (x))
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#define __cpu_to_be32(x) ((u32) (x))
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#define __be32_to_cpu(x) ((u32) (x))
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#define __cpu_to_be16(x) ((u16) (x))
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#define __be16_to_cpu(x) ((u16) (x))
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#endif
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#if BITS==32
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#define __becell_to_cpu(x) (__be32_to_cpu(x))
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#define __lecell_to_cpu(x) (__le32_to_cpu(x))
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#define __cpu_to_becell(x) (__cpu_to_be32(x))
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#define __cpu_to_lecell(x) (__cpu_to_le32(x))
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#else
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#define __becell_to_cpu(x) (__be64_to_cpu(x))
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#define __lecell_to_cpu(x) (__le64_to_cpu(x))
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#define __cpu_to_becell(x) (__cpu_to_be64(x))
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#define __cpu_to_lecell(x) (__cpu_to_le64(x))
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#endif
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#endif
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