mingw-w64-crt/intrincs/cpuid.c

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the w64 mingw-runtime package.
 * No warranty is given; refer to the file DISCLAIMER within this package.
 */

#include <intrin.h>

  void __cpuid(int CPUInfo[4], int InfoType)
  {
      __asm__ __volatile__ (
          "cpuid"
          : "=a" (CPUInfo [0]), "=b" (CPUInfo [1]), "=c" (CPUInfo [2]), "=d" (CPUInfo [3])
          : "a" (InfoType));
  }