swab.h File Reference

#include <linux/types.h>
#include <linux/stddef.h>
#include <asm/bitsperlong.h>
#include <asm/swab.h>

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Macros
#define	___constant_swab16(x)
#define	___constant_swab32(x)
#define	___constant_swab64(x)
#define	___constant_swahw32(x)
#define	___constant_swahb32(x)
#define	__swab16(x)
#define	__swab32(x)
#define	__swab64(x)
#define	__swahw32(x)
#define	__swahb32(x)

Macro Definition Documentation

___constant_swab16

#define ___constant_swab16

(

x

)

Value:

    ((__u16)(               \
    (((__u16)(x) & (__u16)0x00ffU) << 8) |          \
    (((__u16)(x) & (__u16)0xff00U) >> 8)))

___constant_swab32

#define ___constant_swab32

(

x

)

Value:

    ((__u32)(               \
    (((__u32)(x) & (__u32)0x000000ffUL) << 24) |        \
    (((__u32)(x) & (__u32)0x0000ff00UL) <<  8) |        \
    (((__u32)(x) & (__u32)0x00ff0000UL) >>  8) |        \
    (((__u32)(x) & (__u32)0xff000000UL) >> 24)))

___constant_swab64

#define ___constant_swab64

(

x

)

Value:

    ((__u64)(               \
    (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) |   \
    (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) |   \
    (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) |   \
    (((__u64)(x) & (__u64)0x00000000ff000000ULL) <<  8) |   \
    (((__u64)(x) & (__u64)0x000000ff00000000ULL) >>  8) |   \
    (((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) |   \
    (((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) |   \
    (((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56)))

___constant_swahb32

#define ___constant_swahb32

(

x

)

Value:

    ((__u32)(           \
    (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) |     \
    (((__u32)(x) & (__u32)0xff00ff00UL) >> 8)))

___constant_swahw32

#define ___constant_swahw32

(

x

)

Value:

    ((__u32)(           \
    (((__u32)(x) & (__u32)0x0000ffffUL) << 16) |        \
    (((__u32)(x) & (__u32)0xffff0000UL) >> 16)))

__swab16

#define __swab16

(

x

)

Value:

    (__u16)(__builtin_constant_p(x) ?   \
    ___constant_swab16(x) :         \
    __fswab16(x))

__swab16 - return a byteswapped 16-bit value @x: value to byteswap

__swab32

#define __swab32

(

x

)

Value:

    (__u32)(__builtin_constant_p(x) ?   \
    ___constant_swab32(x) :         \
    __fswab32(x))

__swab32 - return a byteswapped 32-bit value @x: value to byteswap

__swab64

#define __swab64

(

x

)

Value:

    (__u64)(__builtin_constant_p(x) ?   \
    ___constant_swab64(x) :         \
    __fswab64(x))

__swab64 - return a byteswapped 64-bit value @x: value to byteswap

__swahb32

#define __swahb32

(

x

)

Value:

    (__builtin_constant_p((__u32)(x)) ? \
    ___constant_swahb32(x) :        \
    __fswahb32(x))

__swahb32 - return a high and low byte-swapped 32-bit value @x: value to byteswap

__swahb32(0x12345678) is 0x34127856

__swahw32

#define __swahw32

(

x

)

Value:

    (__builtin_constant_p((__u32)(x)) ? \
    ___constant_swahw32(x) :        \
    __fswahw32(x))

__swahw32 - return a word-swapped 32-bit value @x: value to wordswap

__swahw32(0x12340000) is 0x00001234