//	if (zero == 0) {
	//		copy(P3.x[:], X2)
	//		copy(P3.y[:], Y2)
	//		copy(P3.z[:], []byte{0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
	//			0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01})  //(p256.z*2^256)%p
	//	}
	VL   16(P2ptr), X2H
	VPDI $0x4, X2H, X2H, X2H
	VL   0(P2ptr), X2L

	0x83, 0x76, 0x87, 0xfa, 0xd8, 0x0b, 0xcc, 0x6d, 0x05, 0xdf, 0xd6, 0xf0, 0x52, 0x2b, 0x76, 0xa0,
	0x29, 0x06, 0x3e, 0x07, 0x65, 0xb9, 0x06, 0x3b, 0x83, 0x3e, 0x61, 0x2a, 0xc6, 0x03, 0x45, 0x4a,
	0xa6, 0x62, 0x2b, 0x76, 0xaa, 0x37, 0xca, 0x62, 0x77, 0xbf, 0x00, 0xdb, 0x33, 0x5d, 0x02, 0xb7,
	0x40, 0xae, 0x47, 0x46, 0xd1, 0x12, 0x40, 0xf2, 0x13, 0x3e, 0x04, 0x85, 0x21, 0xee, 0x0f, 0x48,

	0x11, 0x67, 0x23, 0x8a, 0xf8, 0xfe, 0xec, 0x27, 0x08, 0x04, 0x09, 0x72, 0x48, 0x03, 0xa8, 0x9a,
	0x3b, 0x6d, 0x94, 0xa4, 0x0b, 0x82, 0x7f, 0x55, 0x10, 0x0e, 0x21, 0xcb, 0x21, 0x10, 0x5e, 0x9d,
	0xd2, 0x8c, 0x5e, 0xd2, 0x68, 0x61, 0xaa, 0xe3, 0xe1, 0xc4, 0x38, 0xf8, 0x74, 0x6d, 0x97, 0xee,
	0xa3, 0x25, 0xed, 0x51, 0xca, 0xf3, 0x85, 0x37, 0xaa, 0x7b, 0xc6, 0xcb, 0x04, 0x72, 0x47, 0x42,

	and, or, xor, andNot string
}{
	{"0x00", "0x00", "0x00", "0x00", "0x00", "0x00"},
	{"0x00", "0x01", "0x00", "0x01", "0x01", "0x00"},
	{"0x01", "0x00", "0x00", "0x01", "0x01", "0x01"},
	{"-0x01", "0x00", "0x00", "-0x01", "-0x01", "-0x01"},
	{"-0xaf", "-0x50", "-0xf0", "-0x0f", "0xe1", "0x41"},
	{"0x00", "-0x01", "0x00", "-0x01", "-0x01", "0x00"},
	{"0x01", "0x01", "0x01", "0x01", "0x00", "0x00"},

DATA p256<>+0x38(SB)/8, $0x1415161700000000 // SEL 0  d1 d0  0
DATA p256<>+0x40(SB)/8, $0x18191a1b1c1d1e1f // SEL d1 d0 d1 d0
DATA p256<>+0x48(SB)/8, $0x18191a1b1c1d1e1f // SEL d1 d0 d1 d0
DATA p256mul<>+0x00(SB)/8, $0x00000000ffffffff // P256 original
DATA p256mul<>+0x08(SB)/8, $0xffffffffffffffff // P256
DATA p256mul<>+0x10(SB)/8, $0xffffffff00000001 // P256 original
DATA p256mul<>+0x18(SB)/8, $0x0000000000000000 // P256

	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xec, 0x56, 0xcf, 0x6f, 0xe3, 0x44,
	0x14, 0xce, 0xa4, 0x09, 0x4d, 0x26, 0x44, 0xa1, 0x43, 0x85, 0xac, 0x0a, 0x39, 0xc5, 0x02, 0xa9,
	0x88, 0x62, 0xd3, 0x82, 0x80, 0x0b, 0x48, 0x75, 0x0f, 0x28, 0x10, 0xda, 0x32, 0x15, 0x3d, 0x20,
	0x0e, 0x4c, 0x9c, 0xa9, 0x33, 0xc4, 0xbf, 0xe4, 0xb1, 0x23, 0x55, 0x5c, 0xb8, 0x70, 0x45, 0x5c,

DATA masks<>+0x48(SB)/8, $0x0000000000000000
DATA masks<>+0x50(SB)/8, $0x000000ffffffffff
DATA masks<>+0x58(SB)/8, $0x0000000000000000
DATA masks<>+0x60(SB)/8, $0x0000ffffffffffff
DATA masks<>+0x68(SB)/8, $0x0000000000000000
DATA masks<>+0x70(SB)/8, $0x00ffffffffffffff
DATA masks<>+0x78(SB)/8, $0x0000000000000000
DATA masks<>+0x80(SB)/8, $0xffffffffffffffff
DATA masks<>+0x88(SB)/8, $0x0000000000000000

	"golang.org/x/net/dns/dnsmessage"
)

// Test address from 192.0.2.0/24 block, reserved by RFC 5737 for documentation.
var TestAddr = [4]byte{0xc0, 0x00, 0x02, 0x01}

// Test address from 2001:db8::/32 block, reserved by RFC 3849 for documentation.
var TestAddr6 = [16]byte{0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}

func mustNewName(name string) dnsmessage.Name {
	nn, err := dnsmessage.NewName(name)
	if err != nil {

			// Emit literal 0 bit, then repeat as needed.
			prog = append(prog, 0x01, 0x00)
			if elemPtrs+1 < elemWords {
				prog = append(prog, 0x81)
				prog = appendVarint(prog, elemWords-elemPtrs-1)
			}
		}
		// Repeat length-1 times.
		if elemWords < 0x80 {
			prog = append(prog, byte(elemWords|0x80))
		} else {
			prog = append(prog, 0x80)
			prog = appendVarint(prog, elemWords)
		}

	name := n.Data[:0]

Loop:
	for {
		if currOff >= len(msg) {
			return off, errBaseLen
		}
		c := int(msg[currOff])
		currOff++
		switch c & 0xC0 {
		case 0x00: // String segment
			if c == 0x00 {
				// A zero length signals the end of the name.
				break Loop
			}
			endOff := currOff + c
			if endOff > len(msg) {
				return off, errCalcLen
			}