asmArchMipsLE   = asmArch{name: "mipsle", bigEndian: false, stack: "R29", lr: true}
	asmArchMips64   = asmArch{name: "mips64", bigEndian: true, stack: "R29", lr: true}
	asmArchMips64LE = asmArch{name: "mips64le", bigEndian: false, stack: "R29", lr: true}
	asmArchPpc64    = asmArch{name: "ppc64", bigEndian: true, stack: "R1", lr: true, retRegs: []string{"R3", "F1"}}

	lowerByte := *(*byte)(unsafe.Pointer(&x))
	switch lowerByte {
	case 0x01:
		nativeByteOrder = binary.BigEndian
	case 0x02:
		nativeByteOrder = binary.LittleEndian
	default:
		panic("Could not determine native byte order.")
	}
}

// <arpa/inet.h>
func ntohs(n16 uint16) uint16 {
	if nativeByteOrder == binary.BigEndian {
		return n16
	}
	return (n16&0xff00)>>8 | (n16&0xff)<<8

		byte(v>>56),
		byte(v>>48),
		byte(v>>40),
		byte(v>>32),
		byte(v>>24),
		byte(v>>16),
		byte(v>>8),
		byte(v),
	)
}

func (bigEndian) String() string { return "BigEndian" }

func (bigEndian) GoString() string { return "binary.BigEndian" }

func (nativeEndian) String() string { return "NativeEndian" }

func (nativeEndian) GoString() string { return "binary.NativeEndian" }

	x, y := d.info[offset], d.info[offset+1]
	switch {
	case x == 0 && y == 0:
		return nil, DecodeError{"info", 4, "unsupported version 0"}
	case x == 0:
		d.bigEndian = true
		d.order = binary.BigEndian
	case y == 0:
		d.bigEndian = false
		d.order = binary.LittleEndian
	default:
		return nil, DecodeError{"info", 4, "cannot determine byte order"}
	}

	u, err := d.parseUnits()
	if err != nil {

	(Int64Make
		(Load <typ.Int32> ptr mem)
		(Load <typ.UInt32> (OffPtr <typ.UInt32Ptr> [4] ptr) mem))

(Load <t> ptr mem) && is64BitInt(t) && config.BigEndian && !t.IsSigned() =>
	(Int64Make
		(Load <typ.UInt32> ptr mem)
		(Load <typ.UInt32> (OffPtr <typ.UInt32Ptr> [4] ptr) mem))

(Store {t} dst (Int64Make hi lo) mem) && t.Size() == 8 && !config.BigEndian =>
	(Store {hi.Type}

	return &lengthDelimitedFrameWriter{w: w}
}

// Write writes a single frame to the nested writer, prepending it with the length
// in bytes of data (as a 4 byte, bigendian uint32).
func (w *lengthDelimitedFrameWriter) Write(data []byte) (int, error) {
	binary.BigEndian.PutUint32(w.h[:], uint32(len(data)))
	n, err := w.w.Write(w.h[:])
	if err != nil {
		return 0, err
	}
	if n != len(w.h) {
		return 0, io.ErrShortWrite
	}

		return nil, fmt.Errorf("unrecognised archive magic: 0x%x", magic)
	}

	var fhdr bigarFileHeader
	if _, err := sr.Seek(0, io.SeekStart); err != nil {
		return nil, err
	}
	if err := binary.Read(sr, binary.BigEndian, &fhdr); err != nil {
		return nil, err
	}

	off, err := parseDecimalBytes(fhdr.Flfstmoff[:])
	if err != nil {
		return nil, fmt.Errorf("error parsing offset of first member in archive header(%q); %v", fhdr, err)

			return 0, 0
		}
		n = 4
		size = binary.BigEndian.Uint32(s)
		size &^= 1 << 31
	}
	return size, n
}

func readString(s []byte, size uint32) string {
	if size > uint32(len(s)) {
		return ""
	}
	return string(s[:size])
}

func encodeSize(b []byte, size uint32) int {
	if size > 127 {
		size |= 1 << 31
		binary.BigEndian.PutUint32(b, size)
		return 4
	}
	b[0] = byte(size)

const PtrSize = 4 << (^uintptr(0) >> 63)

// ArchFamily is the architecture family (AMD64, ARM, ...)
const ArchFamily ArchFamilyType = _ArchFamily

// BigEndian reports whether the architecture is big-endian.
const BigEndian = IsArmbe|IsArm64be|IsMips|IsMips64|IsPpc|IsPpc64|IsS390|IsS390x|IsSparc|IsSparc64 == 1

// DefaultPhysPageSize is the default physical page size.
const DefaultPhysPageSize = _DefaultPhysPageSize

	rtmVersion   byte
	wireFormats  map[int]*wireFormat
)

func init() {
	i := uint32(1)
	b := (*[4]byte)(unsafe.Pointer(&i))
	if b[0] == 1 {
		nativeEndian = littleEndian
	} else {
		nativeEndian = bigEndian
	}
	// might get overridden in probeRoutingStack
	rtmVersion = syscall.RTM_VERSION
	kernelAlign, wireFormats = probeRoutingStack()
}

func roundup(l int) int {
	if l == 0 {
		return kernelAlign
	}