/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1996, 99, 2003 by Ralf Baechle */ #ifndef _ASM_BYTEORDER_H #define _ASM_BYTEORDER_H #include <linux/config.h> #include <linux/compiler.h> #include <asm/types.h> #ifdef __GNUC__ #ifdef CONFIG_CPU_MIPSR2 static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) { __asm__( " wsbh %0, %1 \n" : "=r" (x) : "r" (x)); return x; } #define __arch__swab16(x) ___arch__swab16(x) static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) { __asm__( " wsbh %0, %1 \n" " rotr %0, %0, 16 \n" : "=r" (x) : "r" (x)); return x; } #define __arch__swab32(x) ___arch__swab32(x) #ifdef CONFIG_CPU_MIPS64_R2 static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) { __asm__( " dsbh %0, %1 \n" " dshd %0, %0 \n" " drotr %0, %0, 32 \n" : "=r" (x) : "r" (x)); return x; } #define __arch__swab64(x) ___arch__swab64(x) #endif /* CONFIG_CPU_MIPS64_R2 */ #endif /* CONFIG_CPU_MIPSR2 */ #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) # define __BYTEORDER_HAS_U64__ # define __SWAB_64_THRU_32__ #endif #endif /* __GNUC__ */ #if defined (__MIPSEB__) # include <linux/byteorder/big_endian.h> #elif defined (__MIPSEL__) # include <linux/byteorder/little_endian.h> #else # error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" #endif #endif /* _ASM_BYTEORDER_H */