| //===----------------------------------------------------------------------===// | |
| // | |
| // 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; | |
| } |