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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_POWERPC_SWAB_H
#define _ASM_POWERPC_SWAB_H
#include <uapi/asm/swab.h>
#ifdef __GNUC__
#ifndef __powerpc64__
#endif /* __powerpc64__ */
static __inline__ __u16 ld_le16(const volatile __u16 *addr)
{
__u16 val;
__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
#define __arch_swab16p ld_le16
static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
{
__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}
static inline void __arch_swab16s(__u16 *addr)
{
st_le16(addr, *addr);
}
#define __arch_swab16s __arch_swab16s
static __inline__ __u32 ld_le32(const volatile __u32 *addr)
{
__u32 val;
__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
#define __arch_swab32p ld_le32
static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
{
__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}
static inline void __arch_swab32s(__u32 *addr)
{
st_le32(addr, *addr);
}
#define __arch_swab32s __arch_swab32s
static inline __attribute_const__ __u16 __arch_swab16(__u16 value)
{
__u16 result;
__asm__("rlwimi %0,%1,8,16,23"
: "=r" (result)
: "r" (value), "0" (value >> 8));
return result;
}
#define __arch_swab16 __arch_swab16
static inline __attribute_const__ __u32 __arch_swab32(__u32 value)
{
__u32 result;
__asm__("rlwimi %0,%1,24,16,23\n\t"
"rlwimi %0,%1,8,8,15\n\t"
"rlwimi %0,%1,24,0,7"
: "=r" (result)
: "r" (value), "0" (value >> 24));
return result;
}
#define __arch_swab32 __arch_swab32
#endif /* __GNUC__ */
#endif /* _ASM_POWERPC_SWAB_H */
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