bitrev.h File Reference

#include <linux/types.h>
#include <asm-generic/bitops/__bitrev.h>

Include dependency graph for bitrev.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	__bitrev32   generic___bitrev32
#define	__bitrev16   generic___bitrev16
#define	__bitrev8   generic___bitrev8
#define	__bitrev8x4(x)   (__bitrev32(swab32(x)))
#define	__constant_bitrev32(x)
#define	__constant_bitrev16(x)
#define	__constant_bitrev8x4(x)
#define	__constant_bitrev8(x)
#define	bitrev32(x)
#define	bitrev16(x)
#define	bitrev8x4(x)
#define	bitrev8(x)

Macro Definition Documentation

__bitrev16

#define __bitrev16   generic___bitrev16

__bitrev32

#define __bitrev32   generic___bitrev32

__bitrev8

#define __bitrev8   generic___bitrev8

__bitrev8x4

#define __bitrev8x4

(

x

)

(__bitrev32(swab32(x)))

__constant_bitrev16

#define __constant_bitrev16

(

x

)

Value:

({                  \
    u16 ___x = x;           \
    ___x = (___x >> 8) | (___x << 8);   \
    ___x = ((___x & (u16)0xF0F0U) >> 4) | ((___x & (u16)0x0F0FU) << 4); \
    ___x = ((___x & (u16)0xCCCCU) >> 2) | ((___x & (u16)0x3333U) << 2); \
    ___x = ((___x & (u16)0xAAAAU) >> 1) | ((___x & (u16)0x5555U) << 1); \
    ___x;                               \
})

__constant_bitrev32

#define __constant_bitrev32

(

x

)

Value:

({                  \
    u32 ___x = x;           \
    ___x = (___x >> 16) | (___x << 16); \
    ___x = ((___x & (u32)0xFF00FF00UL) >> 8) | ((___x & (u32)0x00FF00FFUL) << 8);   \
    ___x = ((___x & (u32)0xF0F0F0F0UL) >> 4) | ((___x & (u32)0x0F0F0F0FUL) << 4);   \
    ___x = ((___x & (u32)0xCCCCCCCCUL) >> 2) | ((___x & (u32)0x33333333UL) << 2);   \
    ___x = ((___x & (u32)0xAAAAAAAAUL) >> 1) | ((___x & (u32)0x55555555UL) << 1);   \
    ___x;                               \
})

__constant_bitrev8

#define __constant_bitrev8

(

x

)

Value:

({                  \
    u8 ___x = x;            \
    ___x = (___x >> 4) | (___x << 4);   \
    ___x = ((___x & (u8)0xCCU) >> 2) | ((___x & (u8)0x33U) << 2);   \
    ___x = ((___x & (u8)0xAAU) >> 1) | ((___x & (u8)0x55U) << 1);   \
    ___x;                               \
})

__constant_bitrev8x4

#define __constant_bitrev8x4

(

x

)

Value:

({          \
    u32 ___x = x;   \
    ___x = ((___x & (u32)0xF0F0F0F0UL) >> 4) | ((___x & (u32)0x0F0F0F0FUL) << 4);   \
    ___x = ((___x & (u32)0xCCCCCCCCUL) >> 2) | ((___x & (u32)0x33333333UL) << 2);   \
    ___x = ((___x & (u32)0xAAAAAAAAUL) >> 1) | ((___x & (u32)0x55555555UL) << 1);   \
    ___x;                               \
})

bitrev16

#define bitrev16

(

x

)

Value:

({          \
    u16 __x = x;    \
    __builtin_constant_p(__x) ? \
    __constant_bitrev16(__x) :          \
    __bitrev16(__x);                \
 })

bitrev32

#define bitrev32

(

x

)

Value:

({          \
    u32 __x = x;    \
    __builtin_constant_p(__x) ? \
    __constant_bitrev32(__x) :          \
    __bitrev32(__x);                \
})

bitrev8

#define bitrev8

(

x

)

Value:

({          \
    u8 __x = x; \
    __builtin_constant_p(__x) ? \
    __constant_bitrev8(__x) :           \
    __bitrev8(__x)  ;           \
 })

bitrev8x4

#define bitrev8x4

(

x

)

Value:

({          \
    u32 __x = x;    \
    __builtin_constant_p(__x) ? \
    __constant_bitrev8x4(__x) :         \
    __bitrev8x4(__x);               \
 })