cpuid-0.cpp

#include <stdio.h>

static void cpuid(int op1, int op2, int *data) {
    asm("cpuid" 
        : "=a" (data[0]), "=b" (data[1]), "=c" (data[3]), "=d" (data[2])
        : "a"(op1), "c"(op2));
}

int main(int argc, char** argv) {
    int values[5];
    cpuid(0, 0, values);  
    printf("Vendor String: %s\n", (char*) &values[1]);
}