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#include <cpuid.h>
#include <stdio.h>

enum {
    CONST4b = 0b1111,
    CONST4 = 4,
    CONST2b = 0b11,
    CONST8b = 0b11111111,
    CONST8 = 8,
    CONST6 = 6,
    CONST15 = 15
};

int main() {
    int v1, v2, v3;
    __asm__("mov $1, %%eax\n\t"
            "cpuid"
            : "=a"(v1), "=c"(v2), "=d"(v3)
            :
            : "ebx");
    // int stepping_id = v1 && CONST4b;
    v1 = (v1 >> CONST4);
    int model = v1 & CONST4b;
    v1 = (v1 >> CONST4);
    int family_id = v1 & CONST4b;
    v1 = (v1 >> CONST4);
    // int processor_type = v1 & CONST2b;
    v1 = (v1 >> CONST4);
    int extended_model_id = v1 & CONST4b;
    v1 = (v1 >> CONST4);
    // int extended_family_id = v1 & CONST8b;
    v1 = (v1 >> CONST8);
    int processor_model = 0;
    if (family_id == CONST6 || family_id == CONST15) {
        processor_model = (extended_model_id << CONST4) + model;
    } else {
        processor_model = model;
    }
    printf("family=%d model=%d ecx=0x%x edx=0x%x\n", family_id, processor_model,
           v2, v3);
}