Mine

void getCPUVendorID(char * vendor) {
    char temp = 0;
    CPUID(0x00000001, &temp, vendor, (vendor + 8), (vendor + 4));
}

void CPUID(unsigned long function, void * eax_out, void * ebx_out, void * ecx_out, void * edx_out) {
    __asm {
        pushad

        mov eax, function
        cpuid
        mov [eax_out], eax
        mov [ebx_out], ebx
        mov [ecx_out], ecx
        mov [edx_out], edx

        popad
    }
}