register_char_driver("null", qemu_chr_open_null);
register_char_driver("socket", qemu_chr_open_socket);
register_char_driver("udp", qemu_chr_open_udp);
register_char_driver("null", qemu_chr_open_null);
register_char_driver("socket", qemu_chr_open_socket);
register_char_driver("udp", qemu_chr_open_udp);