{obj.Addr{Type: obj.TYPE_REG, Reg: REG_F2}, C_FREGP},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_V2}, C_VREG},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_VS1}, C_VSREG},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_VS2}, C_VSREGP},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_CR}, C_CREG},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_CR1}, C_CREG},
		{obj.Addr{Type: obj.TYPE_REG, Reg: REG_CR1SO}, C_CRBIT},

//go:linkname asanread
//go:nosplit
func asanread(addr unsafe.Pointer, sz uintptr) {
	sp := getcallersp()
	pc := getcallerpc()
	doasanread(addr, sz, sp, pc)
}

//go:linkname asanwrite
//go:nosplit
func asanwrite(addr unsafe.Pointer, sz uintptr) {
	sp := getcallersp()
	pc := getcallerpc()
	doasanwrite(addr, sz, sp, pc)
}

//go:noescape
func doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)

//go:noescape

func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (int, error) {
	if !c.ok() {
		return 0, syscall.EINVAL
	}
	n, err := c.writeTo(b, addr)
	if err != nil {
		err = &OpError{Op: "write", Net: c.fd.net, Source: c.fd.laddr, Addr: addr.opAddr(), Err: err}
	}
	return n, err
}

// WriteTo implements the [PacketConn] WriteTo method.
func (c *IPConn) WriteTo(b []byte, addr Addr) (int, error) {
	if !c.ok() {

		}
		// See struct sockaddr_in
		daddr = net.IPv4(
			addr.Addr.Addr[0], addr.Addr.Addr[1], addr.Addr.Addr[2], addr.Addr.Addr[3])
	} else {
		addr, err = unix.GetsockoptIPv6MTUInfo(
			int(fd), unix.IPPROTO_IPV6,
			constants.SoOriginalDst)
		if err != nil {
			log.Errorf("Error to ipv6 getsockopt: %v", err)
			return
		}
		// See struct sockaddr_in6
		daddr = addr.Addr.Addr[:]
	}
	// See sockaddr_in6 and sockaddr_in

	r0, _, e1 := Syscall6(procMapViewOfFile.Addr(), 5, uintptr(handle), uintptr(access), uintptr(offsetHigh), uintptr(offsetLow), uintptr(length), 0)
	addr = uintptr(r0)
	if addr == 0 {
		err = errnoErr(e1)
	}
	return
}

func MoveFile(from *uint16, to *uint16) (err error) {

type addrList []Addr

// isIPv4 reports whether addr contains an IPv4 address.
func isIPv4(addr Addr) bool {
	switch addr := addr.(type) {
	case *TCPAddr:
		return addr.IP.To4() != nil
	case *UDPAddr:
		return addr.IP.To4() != nil
	case *IPAddr:
		return addr.IP.To4() != nil
	}
	return false
}

// isNotIPv4 reports whether addr does not contain an IPv4 address.

	addr := ap.Addr()
	if !addr.IsValid() {
		return syscall.SockaddrInet6{}, &AddrError{Err: "non-IPv6 address", Addr: addr.String()}
	}
	sa := syscall.SockaddrInet6{
		Addr:   addr.As16(),
		Port:   int(ap.Port()),
		ZoneId: uint32(zoneCache.index(addr.Zone())),
	}
	return sa, nil

	// type to avoid the header trim/copy
	var addr *IPAddr
	n, sa, err := c.fd.readFrom(b)
	switch sa := sa.(type) {
	case *syscall.SockaddrInet4:
		addr = &IPAddr{IP: sa.Addr[0:]}
		n = stripIPv4Header(n, b)
	case *syscall.SockaddrInet6:
		addr = &IPAddr{IP: sa.Addr[0:], Zone: zoneCache.name(int(sa.ZoneId))}
	}
	return n, addr, err
}

func stripIPv4Header(n int, b []byte) int {
	if len(b) < 20 {

	}
	releaseSudog(s)
}

func semrelease(addr *uint32) {
	semrelease1(addr, false, 0)
}

func semrelease1(addr *uint32, handoff bool, skipframes int) {
	root := semtable.rootFor(addr)
	atomic.Xadd(addr, 1)

	// Easy case: no waiters?
	// This check must happen after the xadd, to avoid a missed wakeup
	// (see loop in semacquire).
	if root.nwait.Load() == 0 {
		return
	}

	// Addr methods
	test("Addr.IsZero", func() { sinkBool = MustParseAddr("1.2.3.4").IsZero() })
	test("Addr.BitLen", func() { sinkBool = MustParseAddr("1.2.3.4").BitLen() == 8 })
	test("Addr.Zone/4", func() { sinkBool = MustParseAddr("1.2.3.4").Zone() == "" })
	test("Addr.Zone/6", func() { sinkBool = MustParseAddr("fe80::1").Zone() == "" })