libc/kernel/uapi/asm-x86/asm/swab.h

/*
 * This file is auto-generated. Modifications will be lost.
 *
 * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
 * for more information.
 */
#ifndef _ASM_X86_SWAB_H
#define _ASM_X86_SWAB_H
#include <linux/types.h>
#include <linux/compiler.h>
static inline __attribute__((__const__)) __u32 __arch_swab32(__u32 val) {
  asm("bswapl %0" : "=r" (val) : "0" (val));
  return val;
}
#define __arch_swab32 __arch_swab32
static inline __attribute__((__const__)) __u64 __arch_swab64(__u64 val) {
#ifdef __i386__
  union {
    struct {
      __u32 a;
      __u32 b;
    } s;
    __u64 u;
  } v;
  v.u = val;
  asm("bswapl %0; bswapl %1; xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b));
  return v.u;
#else
  asm("bswapq %0" : "=r" (val) : "0" (val));
  return val;
#endif
}
#define __arch_swab64 __arch_swab64
#endif