1 /* 2 * linux/include/asm-arm/byteorder.h 3 * 4 * Copyright (C) 2011 Andes Technology Corporation 5 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> 6 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 7 * 8 * ARM Endian-ness. In little endian mode, the data bus is connected such 9 * that byte accesses appear as: 10 * 0 = d0...d7, 1 = d8...d15, 2 = d16...d23, 3 = d24...d31 11 * and word accesses (data or instruction) appear as: 12 * d0...d31 13 * 14 * When in big endian mode, byte accesses appear as: 15 * 0 = d24...d31, 1 = d16...d23, 2 = d8...d15, 3 = d0...d7 16 * and word accesses (data or instruction) appear as: 17 * d0...d31 18 */ 19 20 #ifndef __ASM_NDS_BYTEORDER_H 21 #define __ASM_NDS_BYTEORDER_H 22 23 #include <asm/types.h> 24 25 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) 26 # define __BYTEORDER_HAS_U64__ 27 # define __SWAB_64_THRU_32__ 28 #endif 29 30 #ifdef __NDSEB__ 31 #include <linux/byteorder/big_endian.h> 32 #else 33 #include <linux/byteorder/little_endian.h> 34 #endif 35 36 #endif 37