1/**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12#ifndef __ASM_ARM_BYTEORDER_H 13#define __ASM_ARM_BYTEORDER_H 14 15#include <linux/compiler.h> 16#include <asm/types.h> 17 18static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) 19{ 20 __u32 t; 21 22#ifndef __thumb__ 23 if (!__builtin_constant_p(x)) { 24 25 __asm__ ("eor\t%0, %1, %1, ror #16" : "=r" (t) : "r" (x)); 26 } else 27#endif 28 t = x ^ ((x << 16) | (x >> 16)); 29 30 x = (x << 24) | (x >> 8); 31 t &= ~0x00FF0000; 32 x ^= (t >> 8); 33 34 return x; 35} 36 37#define __arch__swab32(x) ___arch__swab32(x) 38 39#ifndef __STRICT_ANSI__ 40#define __BYTEORDER_HAS_U64__ 41#define __SWAB_64_THRU_32__ 42#endif 43 44#ifdef __ARMEB__ 45#include <linux/byteorder/big_endian.h> 46#else 47#include <linux/byteorder/little_endian.h> 48#endif 49 50#endif 51 52