| /** |
| * 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 |
