struct CPUIDinfo
{
    uint32_t EAX;
    uint32_t EBX;
    uint32_t ECX;
    uint32_t EDX;
};
typedef struct CPUIDinfo CPUIDinfo;

void CpuId(unsigned int func, unsigned int subfunc, CPUIDinfo* info)
{
    __asm__ __volatile__ ( "cpuid" : "=a"(info->EAX), "=b"(info->EBX), "=c"(info->ECX), "=d"(info->EDX) : "a"(func), "c"(subfunc) : );
}

uint8_t curr_cpu_apic_id()
{
    CPUIDinfo info;
    CpuId(1, 0, &info);
    return (uint8_t)(info.EBX >> 24);
}