1*b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 28e7a4cefSYalin Wang #ifndef __ASM_BITREV_H 38e7a4cefSYalin Wang #define __ASM_BITREV_H __arch_bitrev32(u32 x)48e7a4cefSYalin Wangstatic __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x) 58e7a4cefSYalin Wang { 68e7a4cefSYalin Wang __asm__ ("rbit %w0, %w1" : "=r" (x) : "r" (x)); 78e7a4cefSYalin Wang return x; 88e7a4cefSYalin Wang } 98e7a4cefSYalin Wang __arch_bitrev16(u16 x)108e7a4cefSYalin Wangstatic __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x) 118e7a4cefSYalin Wang { 128e7a4cefSYalin Wang return __arch_bitrev32((u32)x) >> 16; 138e7a4cefSYalin Wang } 148e7a4cefSYalin Wang __arch_bitrev8(u8 x)158e7a4cefSYalin Wangstatic __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x) 168e7a4cefSYalin Wang { 178e7a4cefSYalin Wang return __arch_bitrev32((u32)x) >> 24; 188e7a4cefSYalin Wang } 198e7a4cefSYalin Wang 208e7a4cefSYalin Wang #endif 21