case '\n':
				b = append(b, '\\', 'n')
			case '\r':
				b = append(b, '\\', 'r')
			case '\t':
				b = append(b, '\\', 't')
			default:
				b = append(b, '\\', 'u', hex[(r>>12)&0xf], hex[(r>>8)&0xf], hex[(r>>4)&0xf], hex[(r>>0)&0xf])
			}
		case r < utf8.RuneSelf:
			b = append(b, byte(r))
		default:
			b = utf8.AppendRune(b, r)
		}
	}
	b = append(b, '"')
	return b

	_MADV_FREE     = 0x5

	_SA_SIGINFO = 0x40
	_SA_RESTART = 0x2
	_SA_ONSTACK = 0x1

	_CLOCK_MONOTONIC = 0x4
	_CLOCK_REALTIME  = 0x0

	_UMTX_OP_WAIT_UINT         = 0xb
	_UMTX_OP_WAIT_UINT_PRIVATE = 0xf
	_UMTX_OP_WAKE              = 0x3
	_UMTX_OP_WAKE_PRIVATE      = 0x10

	_SIGHUP    = 0x1
	_SIGINT    = 0x2
	_SIGQUIT   = 0x3
	_SIGILL    = 0x4
	_SIGTRAP   = 0x5
	_SIGABRT   = 0x6
	_SIGEMT    = 0x7

	_SIGTRAP   = 0x5
	_SIGABRT   = 0x6
	_SIGEMT    = 0x7
	_SIGFPE    = 0x8
	_SIGKILL   = 0x9
	_SIGBUS    = 0xa
	_SIGSEGV   = 0xb
	_SIGSYS    = 0xc
	_SIGPIPE   = 0xd
	_SIGALRM   = 0xe
	_SIGTERM   = 0xf
	_SIGURG    = 0x10
	_SIGSTOP   = 0x11
	_SIGTSTP   = 0x12
	_SIGCONT   = 0x13
	_SIGCHLD   = 0x14
	_SIGTTIN   = 0x15
	_SIGTTOU   = 0x16
	_SIGIO     = 0x17
	_SIGXCPU   = 0x18
	_SIGXFSZ   = 0x19

	_SIGTRAP   = 0x5
	_SIGABRT   = 0x6
	_SIGEMT    = 0x7
	_SIGFPE    = 0x8
	_SIGKILL   = 0x9
	_SIGBUS    = 0xa
	_SIGSEGV   = 0xb
	_SIGSYS    = 0xc
	_SIGPIPE   = 0xd
	_SIGALRM   = 0xe
	_SIGTERM   = 0xf
	_SIGURG    = 0x10
	_SIGSTOP   = 0x11
	_SIGTSTP   = 0x12
	_SIGCONT   = 0x13
	_SIGCHLD   = 0x14
	_SIGTTIN   = 0x15
	_SIGTTOU   = 0x16
	_SIGIO     = 0x17
	_SIGXCPU   = 0x18
	_SIGXFSZ   = 0x19

    private static String printHexBinary(byte[] data) {
        StringBuilder r = new StringBuilder(data.length * 2);
        for (byte b : data) {
            r.append(hexCode[(b >> 4) & 0xF]);
            r.append(hexCode[(b & 0xF)]);
        }
        return r.toString();
    }

	_SIGTRAP   = 0x5
	_SIGABRT   = 0x6
	_SIGEMT    = 0x7
	_SIGFPE    = 0x8
	_SIGKILL   = 0x9
	_SIGBUS    = 0xa
	_SIGSEGV   = 0xb
	_SIGSYS    = 0xc
	_SIGPIPE   = 0xd
	_SIGALRM   = 0xe
	_SIGTERM   = 0xf
	_SIGURG    = 0x10
	_SIGSTOP   = 0x11
	_SIGTSTP   = 0x12
	_SIGCONT   = 0x13
	_SIGCHLD   = 0x14
	_SIGTTIN   = 0x15
	_SIGTTOU   = 0x16
	_SIGIO     = 0x17
	_SIGXCPU   = 0x18
	_SIGXFSZ   = 0x19

	_SIGTRAP   = 0x5
	_SIGABRT   = 0x6
	_SIGEMT    = 0x7
	_SIGFPE    = 0x8
	_SIGKILL   = 0x9
	_SIGBUS    = 0xa
	_SIGSEGV   = 0xb
	_SIGSYS    = 0xc
	_SIGPIPE   = 0xd
	_SIGALRM   = 0xe
	_SIGTERM   = 0xf
	_SIGURG    = 0x10
	_SIGSTOP   = 0x11
	_SIGTSTP   = 0x12
	_SIGCONT   = 0x13
	_SIGCHLD   = 0x14
	_SIGTTIN   = 0x15
	_SIGTTOU   = 0x16
	_SIGIO     = 0x17
	_SIGXCPU   = 0x18
	_SIGXFSZ   = 0x19

// paddedGHASH pads data with zeroes until its length is a multiple of
// 16-bytes. It then calculates a new value for hash using the GHASH algorithm.
func (g *gcmAsm) paddedGHASH(hash *[16]byte, data []byte) {
	siz := len(data) &^ 0xf // align size to 16-bytes
	if siz > 0 {
		ghash(&g.hashKey, hash, data[:siz])
		data = data[siz:]
	}
	if len(data) > 0 {
		var s [16]byte
		copy(s[:], data)
		ghash(&g.hashKey, hash, s[:])
	}
}

	*asm = append(*asm,
		uint8(op>>8),
		(uint8(v1)<<4)|(uint8(x2)&0xf),
		(uint8(b2)<<4)|(uint8(d2>>8)&0xf),
		uint8(d2),
		(uint8(m3)<<4)|rxb(v1, 0, 0, 0),
		uint8(op))
}

func zVRV(op, v1, v2, b2, d2, m3 uint32, asm *[]byte) {
	*asm = append(*asm,
		uint8(op>>8),
		(uint8(v1)<<4)|(uint8(v2)&0xf),
		(uint8(b2)<<4)|(uint8(d2>>8)&0xf),
		uint8(d2),
		(uint8(m3)<<4)|rxb(v1, v2, 0, 0),
		uint8(op))

	}
	// Must be IPv6
	buf := make([]byte, 0, len(ip)*4+len("ip6.arpa."))
	// Add it, in reverse, to the buffer
	for i := len(ip) - 1; i >= 0; i-- {
		v := ip[i]
		buf = append(buf, hexDigit[v&0xF],
			'.',
			hexDigit[v>>4],
			'.')
	}
	// Append "ip6.arpa." and return (buf already has the final .)
	buf = append(buf, "ip6.arpa."...)
	return string(buf), nil
}