(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.

			sep = ","
		}
	}
	fmt.Fprintf(&buf, "}")
	return buf.String()
}

// An Endian is the argument to the SETEND instruction.
type Endian uint8

const (
	LittleEndian Endian = 0
	BigEndian    Endian = 1
)

func (Endian) IsArg() {}

func (e Endian) String() string {
	if e != 0 {
		return "BE"
	}
	return "LE"
}

// A Shift describes an ARM shift operation.

func (mp4Sig) match(data []byte, firstNonWS int) string {
	// https://mimesniff.spec.whatwg.org/#signature-for-mp4
	// c.f. section 6.2.1
	if len(data) < 12 {
		return ""
	}
	boxSize := int(binary.BigEndian.Uint32(data[:4]))
	if len(data) < boxSize || boxSize%4 != 0 {
		return ""
	}
	if !bytes.Equal(data[4:8], mp4ftype) {
		return ""
	}
	for st := 8; st < boxSize; st += 4 {
		if st == 12 {

	}
}

// 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.)

	}
}

// writeLength encodes length into b and then writes it via the given writer
// the length of b is assumed to be 4
func writeLength(w io.Writer, b []byte, length int) {
	binary.BigEndian.PutUint32(b, uint32(length))
	if _, err := w.Write(b); err != nil {
		panic(err) // Write() on hash never fails
	}
}

// toBytes performs unholy acts to avoid allocations
func toBytes(s string) []byte {

			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
			}
		}
	}

				return
			}
			const chunkFieldsLength = 12 // 4 bytes for length, name and crc
			data := b.Bytes()
			i = len(pngHeader)

			for i < len(data)-chunkFieldsLength {
				length := binary.BigEndian.Uint32(data[i : i+4])
				name := string(data[i+4 : i+8])

				switch name {
				case "IHDR":
					bitdepth := data[i+8+8]
					if bitdepth != tc.bitdepth {

	}

	base := f.Offset()

	hdr, _, err := f.Slice(7 * 4)
	if err != nil {
		return errorf("reading hdr: %v", err)
	}

	var e binary.ByteOrder
	if binary.BigEndian.Uint32(hdr[:])&^1 == 0xFEEDFACE {
		e = binary.BigEndian
	} else if binary.LittleEndian.Uint32(hdr[:])&^1 == 0xFEEDFACE {
		e = binary.LittleEndian
	} else {
		return errorf("bad magic - not mach-o file")
	}

// 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