#ifndef __ASM_SH_SWAB_H | |
#define __ASM_SH_SWAB_H | |
/* | |
* Copyright (C) 1999 Niibe Yutaka | |
* Copyright (C) 2000, 2001 Paolo Alberelli | |
*/ | |
#include <linux/compiler.h> | |
#include <linux/types.h> | |
#include <asm-generic/swab.h> | |
static inline __attribute_const__ __u32 __arch_swab32(__u32 x) | |
{ | |
__asm__( | |
#ifdef __SH5__ | |
"byterev %1, %0\n\t" | |
"shari %0, 32, %0" | |
#else | |
"swap.b %1, %0\n\t" | |
"swap.w %0, %0\n\t" | |
"swap.b %0, %0" | |
#endif | |
: "=r" (x) | |
: "r" (x)); | |
return x; | |
} | |
#define __arch_swab32 __arch_swab32 | |
static inline __attribute_const__ __u16 __arch_swab16(__u16 x) | |
{ | |
__asm__( | |
#ifdef __SH5__ | |
"byterev %1, %0\n\t" | |
"shari %0, 32, %0" | |
#else | |
"swap.b %1, %0" | |
#endif | |
: "=r" (x) | |
: "r" (x)); | |
return x; | |
} | |
#define __arch_swab16 __arch_swab16 | |
static inline __u64 __arch_swab64(__u64 val) | |
{ | |
union { | |
struct { __u32 a,b; } s; | |
__u64 u; | |
} v, w; | |
v.u = val; | |
w.s.b = __arch_swab32(v.s.a); | |
w.s.a = __arch_swab32(v.s.b); | |
return w.u; | |
} | |
#define __arch_swab64 __arch_swab64 | |
#endif /* __ASM_SH_SWAB_H */ |