21 lines
451 B
C
21 lines
451 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_BITREV_H
|
|
#define __ASM_BITREV_H
|
|
|
|
static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
|
|
{
|
|
__asm__ ("rbit %0, %1" : "=r" (x) : "r" (x));
|
|
return x;
|
|
}
|
|
|
|
static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
|
|
{
|
|
return __arch_bitrev32((u32)x) >> 16;
|
|
}
|
|
|
|
static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
|
|
{
|
|
return __arch_bitrev32((u32)x) >> 24;
|
|
}
|
|
|
|
#endif
|