61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#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 */
|