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    #ifndef _PPC_BYTEORDER_H
    #define _PPC_BYTEORDER_H
    
    #include <asm/types.h>
    
    #ifdef __GNUC__
    
    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));
    }
    
    /* alas, egcs sounds like it has a bug in this code that doesn't use the
       inline asm correctly, and can cause file corruption. Until I hear that
       it's fixed, I can live without the extra speed. I hope. */
    #if !(__GNUC__ >= 2 && __GNUC_MINOR__ >= 90)
    #if 0
    #  define __arch_swab16(x) ld_le16(&x)
    #  define __arch_swab32(x) ld_le32(&x)
    #else
    
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    static __inline__ __attribute__((const)) __u16 ___arch__swab16(__u16 value)
    
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    {
    	__u16 result;
    
    	__asm__("rlwimi %0,%1,8,16,23"
    	    : "=r" (result)
    	    : "r" (value), "0" (value >> 8));
    	return result;
    }
    
    
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    static __inline__ __attribute__((const)) __u32 ___arch__swab32(__u32 value)
    
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    {
    	__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(x) ___arch__swab32(x)
    #define __arch__swab16(x) ___arch__swab16(x)
    #endif /* 0 */
    
    #endif
    
    /* 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 /* __GNUC__ */
    
    #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
    #define __BYTEORDER_HAS_U64__
    #endif
    #include <linux/byteorder/big_endian.h>
    
    #endif /* _PPC_BYTEORDER_H */