| /** | |
| * This file has no copyright assigned and is placed in the Public Domain. | |
| * This file is part of the mingw-w64 runtime package. | |
| * No warranty is given; refer to the file DISCLAIMER.PD within this package. | |
| */ | |
| #include <intrin.h> | |
| /* Clang has support for MSVC builtins, GCC doesn't */ | |
| #ifndef __has_builtin | |
| #define __has_builtin(x) 0 | |
| #endif | |
| #if !__has_builtin(__rdtsc) | |
| unsigned __int64 __rdtsc(void) | |
| { | |
| #ifdef _WIN64 | |
| unsigned __int64 val1, val2; | |
| #else | |
| unsigned int val1, val2; | |
| #endif | |
| __asm__ __volatile__ ( | |
| "rdtsc" | |
| : "=a" (val1), "=d" (val2)); | |
| return ((unsigned __int64)val1) | (((unsigned __int64)val2) << 32); | |
| } | |
| #endif |