}
	for i, s := range arm64.Anames {
		if obj.As(i) >= obj.A_ARCHSPECIFIC {
			instructions[s] = obj.As(i) + obj.ABaseARM64
		}
	}
	// Annoying aliases.
	instructions["B"] = arm64.AB
	instructions["BL"] = arm64.ABL

	return &Arch{
		LinkArch:       &arm64.Linkarm64,
		Instructions:   instructions,
		Register:       register,
		RegisterPrefix: registerPrefix,