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49 lines
1.1 KiB
49 lines
1.1 KiB
16 years ago
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#ifndef _BLACKFIN_SWAB_H
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#define _BLACKFIN_SWAB_H
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#include <asm/types.h>
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#include <linux/compiler.h>
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
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# define __SWAB_64_THRU_32__
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#endif
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#ifdef __GNUC__
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static __inline__ __attribute_const__ __u32 __arch_swahb32(__u32 xx)
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{
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__u32 tmp;
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__asm__("%1 = %0 >> 8 (V);\n\t"
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"%0 = %0 << 8 (V);\n\t"
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"%0 = %0 | %1;\n\t"
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: "+d"(xx), "=&d"(tmp));
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return xx;
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}
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#define __arch_swahb32 __arch_swahb32
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static __inline__ __attribute_const__ __u32 __arch_swahw32(__u32 xx)
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{
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__u32 rv;
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__asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
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return rv;
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}
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#define __arch_swahw32 __arch_swahw32
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static __inline__ __attribute_const__ __u32 __arch_swab32(__u32 xx)
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{
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return __arch_swahb32(__arch_swahw32(xx));
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}
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#define __arch_swab32 __arch_swab32
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static __inline__ __attribute_const__ __u16 __arch_swab16(__u16 xx)
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{
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__u32 xw = xx;
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__asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
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return (__u16)xw;
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}
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#define __arch_swab16 __arch_swab16
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#endif /* __GNUC__ */
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#endif /* _BLACKFIN_SWAB_H */
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