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18 lines
510 B
C
18 lines
510 B
C
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.txt for details.
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//
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//===----------------------------------------------------------------------===//
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#include <stdint.h>
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uint64_t _rdtsc()
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{
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uint32_t eax, edx;
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asm volatile ("rdtsc" : "=a" (eax), "=d" (edx));
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return ((uint64_t)edx << 32) | eax;
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}
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