package x64

const (
	AddressMemory         = byte(0b00)
	AddressMemoryOffset8  = byte(0b01)
	AddressMemoryOffset32 = byte(0b10)
	AddressDirect         = byte(0b11)
)

// ModRM is used to generate a ModRM suffix.
// - mod: 2 bits
// - reg: 3 bits
// - rm:  3 bits
func ModRM(mod byte, reg byte, rm byte) byte {
	return (mod << 6) | (reg << 3) | rm
}