def to_bpf(raw, arch)
      arch ||= Util.system_arch
      raw.scan(/.{8}/m).map.with_index { |b, i| BPF.new(b, arch, i) }
    end
def to_bpf(raw, arch)
      arch ||= Util.system_arch
      raw.scan(/.{8}/m).map.with_index { |b, i| BPF.new(b, arch, i) }
    end
Convert raw bpf string to array of {BPF}.
 @param [String] raw
 @param [Symbol] arch
 @return [Array<BPF>]