MOVV	addr+0(FP), RARG0
	MOVV	sz+8(FP), RARG1
	// void __msan_write_go(void *addr, uintptr_t sz);
	MOVV	$__msan_write_go(SB), FARG
	JMP	msancall<>(SB)

// func runtime·msanmalloc(addr unsafe.Pointer, sz uintptr)
TEXT	runtime·msanmalloc(SB), NOSPLIT, $0-16
	MOVV	addr+0(FP), RARG0
	MOVV	sz+8(FP), RARG1
	// void __msan_malloc_go(void *addr, uintptr_t sz);
	MOVV	$__msan_malloc_go(SB), FARG
	JMP	msancall<>(SB)

type machoExe struct {
	f *macho.File
}

func (x *machoExe) ReadData(addr, size uint64) ([]byte, error) {
	for _, load := range x.f.Loads {
		seg, ok := load.(*macho.Segment)
		if !ok {
			continue
		}
		if seg.Addr <= addr && addr <= seg.Addr+seg.Filesz-1 {
			if seg.Name == "__PAGEZERO" {
				continue
			}
			n := seg.Addr + seg.Filesz - addr
			if n > size {
				n = size
			}

			ip = ip[:IPv4len]
		}
	}
	switch net {
	case "tcp", "tcp4", "tcp6":
		addr = &TCPAddr{IP: ip, Port: port}
	case "udp", "udp4", "udp6":
		addr = &UDPAddr{IP: ip, Port: port}
	default:
		return nil, UnknownNetworkError(net)
	}
	return addr, nil
}

func startPlan9(ctx context.Context, net string, addr Addr) (ctl *os.File, dest, proto, name string, err error) {
	var (
		ip   IP
		port int
	)

func SwapInt64(addr *int64, new int64) (old int64)

// SwapUint32 atomically stores new into *addr and returns the previous *addr value.
// Consider using the more ergonomic and less error-prone [Uint32.Swap] instead.
func SwapUint32(addr *uint32, new uint32) (old uint32)

// SwapUint64 atomically stores new into *addr and returns the previous *addr value.

	wantInlinable := []string{
		"(*uint128).halves",
		"Addr.BitLen",
		"Addr.hasZone",
		"Addr.Is4",
		"Addr.Is4In6",
		"Addr.Is6",
		"Addr.IsInterfaceLocalMulticast",
		"Addr.IsValid",
		"Addr.IsUnspecified",
		"Addr.Less",
		"Addr.Unmap",
		"Addr.Zone",
		"Addr.v4",
		"Addr.v6",
		"Addr.v6u16",
		"Addr.withoutZone",
		"AddrPortFrom",
		"AddrPort.Addr",
		"AddrPort.Port",
		"AddrPort.IsValid",

func racemapshadow(addr unsafe.Pointer, size uintptr)                       { throw("race") }
func racewritepc(addr unsafe.Pointer, callerpc, pc uintptr)                 { throw("race") }
func racereadpc(addr unsafe.Pointer, callerpc, pc uintptr)                  { throw("race") }
func racereadrangepc(addr unsafe.Pointer, sz, callerpc, pc uintptr)         { throw("race") }

}

// lookupStaticAddr looks up the hosts for the given address from /etc/hosts.
func lookupStaticAddr(addr string) []string {
	hosts.Lock()
	defer hosts.Unlock()
	readHosts()
	addr = parseLiteralIP(addr)
	if addr == "" {
		return nil
	}
	if len(hosts.byAddr) != 0 {
		if hosts, ok := hosts.byAddr[addr]; ok {
			hostsCp := make([]string, len(hosts))
			copy(hostsCp, hosts)
			return hostsCp
		}
	}

		{PrefixFrom(v6, 0), true},
		{PrefixFrom(v6, 32), true},
		{PrefixFrom(v6, 128), true},
		{PrefixFrom(v6, 129), false},

		{PrefixFrom(Addr{}, -2), false},
		{PrefixFrom(Addr{}, -1), false},
		{PrefixFrom(Addr{}, 0), false},
		{PrefixFrom(Addr{}, 32), false},
		{PrefixFrom(Addr{}, 128), false},
	}
	for _, tt := range tests {
		got := tt.ipp.IsValid()
		if got != tt.want {

			ipv4: func() []netip.Addr {
				ip, _ := netip.ParseAddr("1.0.0.0")
				ip2, _ := netip.ParseAddr("255.255.255.255")
				return []netip.Addr{ip, ip2}
			},
			ipv6: func() []netip.Addr {
				return []netip.Addr{}
			},
		},
		{
			name: "one ipv6",
			ips:  []string{"::1"},
			ipv4: func() []netip.Addr {
				return []netip.Addr{}
			},
			ipv6: func() []netip.Addr {
				ip, _ := netip.ParseAddr("::1")

	*addr = new

	unlock()
	return
}

//go:nosplit
func Xchg64(addr *uint64, new uint64) (old uint64) {
	lockAndCheck(addr)

	old = *addr
	*addr = new

	unlock()
	return
}

//go:nosplit
func Cas64(addr *uint64, old, new uint64) (swapped bool) {
	lockAndCheck(addr)

	if (*addr) == old {
		*addr = new
		unlock()
		return true
	}

	unlock()
	return false
}