File: bitrev.h

package info (click to toggle)
linux 4.19.235-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 968,876 kB
  • sloc: ansic: 16,807,772; asm: 272,130; makefile: 38,425; sh: 33,854; perl: 27,702; python: 21,148; cpp: 5,068; yacc: 4,650; lex: 2,584; awk: 1,386; ruby: 25; sed: 5
file content (20 lines) | stat: -rw-r--r-- 452 bytes parent folder | download | duplicates (42)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
/* 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 %w0, %w1" : "=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