mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
77 lines
2 KiB
C
77 lines
2 KiB
C
|
#ifndef _PPC_BYTEORDER_H
|
||
|
|
#define _PPC_BYTEORDER_H
|
||
|
|
|
||
|
|
#include <asm/types.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
|
||
|
|
#ifdef __GNUC__
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
extern __inline__ unsigned ld_le16(const volatile unsigned short *addr)
|
||
|
|
{
|
||
|
|
unsigned val;
|
||
|
|
|
||
|
|
__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern __inline__ void st_le16(volatile unsigned short *addr, const unsigned val)
|
||
|
|
{
|
||
|
|
__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
|
||
|
|
}
|
||
|
|
|
||
|
|
extern __inline__ unsigned ld_le32(const volatile unsigned *addr)
|
||
|
|
{
|
||
|
|
unsigned val;
|
||
|
|
|
||
|
|
__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern __inline__ void st_le32(volatile unsigned *addr, const unsigned val)
|
||
|
|
{
|
||
|
|
__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value)
|
||
|
|
{
|
||
|
|
__u16 result;
|
||
|
|
|
||
|
|
__asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (value >> 8), "r" (value));
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 value)
|
||
|
|
{
|
||
|
|
__u32 result;
|
||
|
|
|
||
|
|
__asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (value>>24), "r" (value));
|
||
|
|
__asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (value));
|
||
|
|
__asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (value));
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
#define __arch__swab32(x) ___arch__swab32(x)
|
||
|
|
#define __arch__swab16(x) ___arch__swab16(x)
|
||
|
|
|
||
|
|
/* The same, but returns converted value from the location pointer by addr. */
|
||
|
|
#define __arch__swab16p(addr) ld_le16(addr)
|
||
|
|
#define __arch__swab32p(addr) ld_le32(addr)
|
||
|
|
|
||
|
|
/* The same, but do the conversion in situ, ie. put the value back to addr. */
|
||
|
|
#define __arch__swab16s(addr) st_le16(addr,*addr)
|
||
|
|
#define __arch__swab32s(addr) st_le32(addr,*addr)
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
|
||
|
|
# define __BYTEORDER_HAS_U64__
|
||
|
|
# define __SWAB_64_THRU_32__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __GNUC__ */
|
||
|
|
|
||
|
|
#include <linux/byteorder/big_endian.h>
|
||
|
|
|
||
|
|
#endif /* _PPC_BYTEORDER_H */
|