cpuid.cc

/**
 * QnD cpuid C script(tested win & lin)
 */
#include <stdio.h>
#include <stdint.h>
using namespace std;
#include <iostream>
#include <array>


#define __cpuid(id, mem)                                                        \
    __asm__ ("cpuid\n\t"					                \
	    : "=a" (mem[0]), "=b" (mem[1]), "=c" (mem[2]), "=d" (mem[3])        \
	    : "0" (id))

int main(int argc, char** argv)
{
    std::array<uint32_t, 4> regs;
    __cpuid(0, regs.data());

    char vendor[0x20] = {0};
    *reinterpret_cast<uint32_t*>(vendor) = regs[1];
    *reinterpret_cast<uint32_t*>(vendor + 4) = regs[3];
    *reinterpret_cast<uint32_t*>(vendor + 8) = regs[2];
    auto vendor_s = std::string(vendor, 0x20);
    std::cout << "cpuid(0)=" << vendor_s.c_str() << std::endl;

    return 0;
}