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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | #ifndef _I386_BYTEORDER_H |
| 2 | #define _I386_BYTEORDER_H |
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| 3 | |||
| 4 | #include |
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| 5 | #include __DEV_CONFIG_H |
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| 6 | |||
| 7 | #ifdef __GNUC__ |
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| 8 | |||
| 9 | static __inline__ __const__ __u32 ___arch__swab32(__u32 x) |
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| 10 | { |
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| 11 | #ifdef CONFIG_X86_BSWAP |
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| 12 | __asm__("bswap %0" : "=r" (x) : "0" (x)); |
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| 13 | #else |
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| 14 | __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ |
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| 15 | "rorl $16,%0\n\t" /* swap words */ |
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| 16 | "xchgb %b0,%h0" /* swap higher bytes */ |
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| 17 | :"=q" (x) |
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| 18 | : "0" (x)); |
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| 19 | #endif |
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| 20 | return x; |
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| 21 | } |
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| 22 | |||
| 23 | static __inline__ __const__ __u16 ___arch__swab16(__u16 x) |
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| 24 | { |
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| 25 | __asm__("xchgb %b0,%h0" /* swap bytes */ \ |
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| 26 | : "=q" (x) \ |
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| 27 | : "0" (x)); \ |
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| 28 | return x; |
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| 29 | } |
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| 30 | |||
| 31 | #define __arch__swab32(x) ___arch__swab32(x) |
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| 32 | #define __arch__swab16(x) ___arch__swab16(x) |
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| 33 | |||
| 34 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
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| 35 | # define __BYTEORDER_HAS_U64__ |
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| 36 | # define __SWAB_64_THRU_32__ |
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| 37 | #endif |
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| 38 | |||
| 39 | #endif /* __GNUC__ */ |
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| 40 | |||
| 41 | #include |
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| 42 | |||
| 43 | #endif /* _I386_BYTEORDER_H */ |