Revision 82e14b02 target-arm/helper-a64.c
| b/target-arm/helper-a64.c | ||
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{
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return clz64(x); |
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} |
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uint64_t HELPER(rbit64)(uint64_t x) |
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{
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/* assign the correct byte position */ |
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x = bswap64(x); |
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/* assign the correct nibble position */ |
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x = ((x & 0xf0f0f0f0f0f0f0f0ULL) >> 4) |
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| ((x & 0x0f0f0f0f0f0f0f0fULL) << 4); |
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/* assign the correct bit position */ |
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x = ((x & 0x8888888888888888ULL) >> 3) |
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| ((x & 0x4444444444444444ULL) >> 1) |
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| ((x & 0x2222222222222222ULL) << 1) |
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| ((x & 0x1111111111111111ULL) << 3); |
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return x; |
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} |
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