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