func call32(typ, fn, stackArgs unsafe.Pointer, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs)
func call64(typ, fn, stackArgs unsafe.Pointer, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs)
func call128(typ, fn, stackArgs unsafe.Pointer, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs)

			return simpleUpdate(crc, t1, b)
		}
		t2 := slicingMakeTable(poly)
		f2 := func(crc uint32, b []byte) uint32 {
			return slicingUpdate(crc, t2, b)
		}
		testCrossCheck(t, f1, f2)
	}
}

func TestArchIEEE(t *testing.T) {
	if !archAvailableIEEE() {
		t.Skip("Arch-specific IEEE not available.")
	}
	archInitIEEE()
	slicingTable := slicingMakeTable(IEEE)

	hdr := make([]byte, n)
	copy(hdr, hdrPrefix)
	*(*uint32)(unsafe.Pointer(&hdr[np])) = uint32(n)
	copy(hdr[np+4:], meta)
	return hdr, nil
}

func (m *mappedFile) place(limit uint32, name string) (start, end uint32) {
	if limit == 0 {
		// first record in file
		limit = m.hdrLen + hashOff + 4*numHash
	}
	n := round(uint32(16+len(name)), recordUnit)

func libfuzzerTraceCmp1(uint8, uint8, uint)
func libfuzzerTraceCmp2(uint16, uint16, uint)
func libfuzzerTraceCmp4(uint32, uint32, uint)
func libfuzzerTraceCmp8(uint64, uint64, uint)
func libfuzzerTraceConstCmp1(uint8, uint8, uint)
func libfuzzerTraceConstCmp2(uint16, uint16, uint)
func libfuzzerTraceConstCmp4(uint32, uint32, uint)
func libfuzzerTraceConstCmp8(uint64, uint64, uint)
func libfuzzerHookStrCmp(string, string, uint)

// https://lemire.me/blog/2016/06/30/fast-random-shuffling
func (r *Rand) int31n(n int32) int32 {
	v := r.Uint32()
	prod := uint64(v) * uint64(n)
	low := uint32(prod)
	if low < uint32(n) {
		thresh := uint32(-n) % uint32(n)
		for low < thresh {
			v = r.Uint32()
			prod = uint64(v) * uint64(n)
			low = uint32(prod)
		}
	}
	return int32(prod >> 32)
}

// the signal handler is currently set to the Go signal handler or not.
// This is uint32 rather than bool so that we can use atomic instructions.
var handlingSig [_NSIG]uint32

// channels for synchronizing signal mask updates with the signal mask
// thread
var (
	disableSigChan  chan uint32
	enableSigChan   chan uint32
	maskUpdatedChan chan struct{}
)

func init() {

	SetNonblock(1, true)
	SetNonblock(2, true)
}

type uintptr32 = uint32
type size = uint32
type fdflags = uint32
type filesize = uint64
type filetype = uint8
type lookupflags = uint32
type oflags = uint32
type rights = uint64
type timestamp = uint64
type dircookie = uint64
type filedelta = int64
type fstflags = uint32

type iovec struct {
	buf    uintptr32
	bufLen size
}

const (

			w.Uint32(naux)
			naux += uint32(nAuxSym(s))
		}
	}
	w.Uint32(naux)

	// Data indexes
	h.Offsets[goobj.BlkDataIdx] = w.Offset()
	dataOff := int64(0)
	for _, list := range lists {
		for _, s := range list {
			w.Uint32(uint32(dataOff))
			dataOff += int64(len(s.P))
			if file := s.File(); file != nil {
				dataOff += int64(file.Size)
			}
		}
	}
	if int64(uint32(dataOff)) != dataOff {

	entryOff uint32 // start pc, as offset from moduledata.text/pcHeader.textStart
	nameOff  int32  // function name, as index into moduledata.funcnametab.

	args        int32  // in/out args size
	deferreturn uint32 // offset of start of a deferreturn call instruction from entry, if any.

	pcsp      uint32
	pcfile    uint32
	pcln      uint32
	npcdata   uint32

	pcdelta := uint32(p[0])
	n = 1
	if pcdelta&0x80 != 0 {
		n, pcdelta = readvarint(p)
	}
	p = p[n:]
	*pc += uintptr(pcdelta * sys.PCQuantum)
	return p, true
}

// readvarint reads a varint from p.
func readvarint(p []byte) (read uint32, val uint32) {
	var v, shift, n uint32
	for {
		b := p[n]
		n++
		v |= uint32(b&0x7F) << (shift & 31)
		if b&0x80 == 0 {
			break
		}