// Emit file header.
	ch := coverage.CounterFileHeader{
		Magic:     coverage.CovCounterMagic,
		Version:   coverage.CounterFileVersion,
		MetaHash:  metaFileHash,
		CFlavor:   cfw.cflavor,
		BigEndian: false,
	}
	if err := binary.Write(cfw.w, binary.LittleEndian, ch); err != nil {
		return err
	}
	return nil
}

func (cfw *CoverageDataWriter) writeBytes(b []byte) error {
	if len(b) == 0 {

func readUnaligned32(p unsafe.Pointer) uint32 {
	q := (*[4]byte)(p)
	if goarch.BigEndian {
		return uint32(q[3]) | uint32(q[2])<<8 | uint32(q[1])<<16 | uint32(q[0])<<24
	}
	return uint32(q[0]) | uint32(q[1])<<8 | uint32(q[2])<<16 | uint32(q[3])<<24
}

func readUnaligned64(p unsafe.Pointer) uint64 {
	q := (*[8]byte)(p)
	if goarch.BigEndian {
		return uint64(q[7]) | uint64(q[6])<<8 | uint64(q[5])<<16 | uint64(q[4])<<24 |

(AtomicOr8 ptr val mem) && !config.BigEndian =>
	(LoweredAtomicOr32 (AND <typ.UInt32Ptr> (MOVVconst [^3]) ptr)
		(SLLV <typ.UInt32> (ZeroExt8to32 val)
			(SLLVconst <typ.UInt64> [3]
				(ANDconst <typ.UInt64> [3] ptr))) mem)

// AtomicAnd8(ptr,val)  =>  LoweredAtomicAnd32(ptr&^3,(uint32(val) << ((ptr & 3) * 8)) | ^(uint32(0xFF) << ((ptr & 3) * 8))))
(AtomicAnd8  ptr val mem) && !config.BigEndian =>

)

func walksymtab(data []byte, fn func(sym) error) error {
	if len(data) == 0 { // missing symtab is okay
		return nil
	}
	var order binary.ByteOrder = binary.BigEndian
	newTable := false
	switch {
	case bytes.HasPrefix(data, oldLittleEndianSymtab):
		// Same as Go 1.0, but little endian.
		// Format was used during interim development between Go 1.0 and Go 1.1.

	}
}

// Tests that xadduintptr correctly updates 64-bit values. The place where
// we actually do so is mstats.go, functions mSysStat{Inc,Dec}.
func TestXadduintptrOnUint64(t *testing.T) {
	if goarch.BigEndian {
		// On big endian architectures, we never use xadduintptr to update
		// 64-bit values and hence we skip the test.  (Note that functions
		// mSysStat{Inc,Dec} in mstats.go have explicit checks for
		// big-endianness.)

			enc.decodeMap[src2[2]],
			enc.decodeMap[src2[3]],
			enc.decodeMap[src2[4]],
			enc.decodeMap[src2[5]],
			enc.decodeMap[src2[6]],
			enc.decodeMap[src2[7]],
		); ok {
			binary.BigEndian.PutUint64(dst[n:], dn)
			n += 6
			si += 8
		} else {
			var ninc int
			si, ninc, err = enc.decodeQuantum(dst[n:], src, si)
			n += ninc
			if err != nil {
				return n, err
			}
		}
	}

// CounterFileHeader stores files header information for a counter-data file.
type CounterFileHeader struct {
	Magic     [4]byte
	Version   uint32
	MetaHash  [16]byte
	CFlavor   CounterFlavor
	BigEndian bool
	_         [6]byte // padding
}

// CounterSegmentHeader encapsulates information about a specific
// segment in a counter data file, which at the moment contains

		f.xahdr.Oalgntext = int16(logBase2(int(XCOFFSECTALIGN)))
		f.xahdr.Oalgndata = 0x5

		binary.Write(ctxt.Out, binary.BigEndian, &f.xfhdr)
		binary.Write(ctxt.Out, binary.BigEndian, &f.xahdr)
	} else {
		f.xfhdr.Fopthdr = 0
		binary.Write(ctxt.Out, binary.BigEndian, &f.xfhdr)
	}

}

func xcoffwrite(ctxt *Link) {
	ctxt.Out.SeekSet(0)

	xfile.writeFileHeader(ctxt)

		x = unsafe.Pointer(&staticuint64s[val])
		if goarch.BigEndian {
			x = add(x, 6)
		}
	} else {
		x = mallocgc(2, uint16Type, false)
		*(*uint16)(x) = val
	}
	return
}

func convT32(val uint32) (x unsafe.Pointer) {
	if val < uint32(len(staticuint64s)) {
		x = unsafe.Pointer(&staticuint64s[val])
		if goarch.BigEndian {
			x = add(x, 4)
		}
	} else {

func machoCompressSection(sectBytes []byte) (compressed bool, contents []byte, err error) {
	var buf bytes.Buffer
	buf.WriteString("ZLIB")
	var sizeBytes [8]byte
	binary.BigEndian.PutUint64(sizeBytes[:], uint64(len(sectBytes)))
	buf.Write(sizeBytes[:])

	z := zlib.NewWriter(&buf)
	if _, err := z.Write(sectBytes); err != nil {
		return false, nil, err
	}