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