return nil, ErrShortStat
	}
	size, buf := gbit16(b)
	if len(b) != int(size)+2 {
		return nil, ErrBadStat
	}
	b = buf

	var d Dir
	d.Type, b = gbit16(b)
	d.Dev, b = gbit32(b)
	d.Qid.Type, b = gbit8(b)
	d.Qid.Vers, b = gbit32(b)
	d.Qid.Path, b = gbit64(b)
	d.Mode, b = gbit32(b)
	d.Atime, b = gbit32(b)
	d.Mtime, b = gbit32(b)

	n, b := gbit64(b)
	d.Length = int64(n)

	var ok bool

		return
	}
	entryLen, buf := gbit16(buf)
	if entryLen > len(buf) {
		return
	}
	n, b := gbit16(buf[nameOffset:])
	if n > len(b) {
		return
	}
	name = b[:n]
	rest = buf[entryLen:]
	return
}

// gbit16 reads a 16-bit little-endian binary number from b and returns it
// with the remaining slice of b.
//
//go:nosplit
func gbit16(b []byte) (int, []byte) {

}

// Init seeds the State with the given seed value.
func (s *State) Init(seed [32]byte) {
	s.Init64([4]uint64{
		byteorder.LeUint64(seed[0*8:]),
		byteorder.LeUint64(seed[1*8:]),
		byteorder.LeUint64(seed[2*8:]),
		byteorder.LeUint64(seed[3*8:]),
	})
}

// Init64 seeds the state with the given seed value.
func (s *State) Init64(seed [4]uint64) {
	s.seed = seed
	block(&s.seed, &s.buf, 0)
	s.c = 0
	s.i = 0
	s.n = chunk

// It returns the string as a byte slice, or nil if b is too short to contain the length or
// the full string.
//
//go:nosplit
func gstringb(b []byte) []byte {
	if len(b) < 2 {
		return nil
	}
	n, b := gbit16(b)
	if int(n) > len(b) {
		return nil
	}
	return b[:n]
}

// Offset of the name field in a 9P directory entry - see UnmarshalDir() in dir_plan9.go
const nameOffset = 39

func mrandinit(mp *m) {
	var seed [4]uint64
	for i := range seed {
		seed[i] = bootstrapRand()
	}
	bootstrapRandReseed() // erase key we just extracted
	mp.chacha8.Init64(seed)
	mp.cheaprand = rand()
}

// randn is like rand() % n but faster.
// Do not change signature: used via linkname from other packages.
//
//go:nosplit
//go:linkname randn

	"uint16":     {Size: 2, Align: 2, C: c("GoUint16")},
	"int32":      {Size: 4, Align: 4, C: c("GoInt32")},
	"uint32":     {Size: 4, Align: 4, C: c("GoUint32")},
	"int64":      {Size: 8, Align: 8, C: c("GoInt64")},
	"uint64":     {Size: 8, Align: 8, C: c("GoUint64")},
	"float32":    {Size: 4, Align: 4, C: c("GoFloat32")},
	"float64":    {Size: 8, Align: 8, C: c("GoFloat64")},

	func MyFunction(arg1, arg2 int, arg3 string) int64 {...}

	//export MyFunction2
	func MyFunction2(arg1, arg2 int, arg3 string) (int64, *C.char) {...}

They will be available in the C code as:

	extern GoInt64 MyFunction(int arg1, int arg2, GoString arg3);
	extern struct MyFunction2_return MyFunction2(int arg1, int arg2, GoString arg3);

found in the _cgo_export.h generated header, after any preambles