// Start with the magic number.
	err := binary.Read(sr, binary.BigEndian, &ff.Magic)
	if err != nil {
		return nil, &FormatError{0, "error reading magic number", nil}
	} else if ff.Magic != MagicFat {
		// See if this is a Mach-O file via its magic number. The magic
		// must be converted to little endian first though.
		var buf [4]byte
		binary.BigEndian.PutUint32(buf[:], ff.Magic)
		leMagic := binary.LittleEndian.Uint32(buf[:])

		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		z.err = err
		return n, z.err
	}
	// ZLIB (RFC 1950) is big-endian, unlike GZIP (RFC 1952).
	checksum := binary.BigEndian.Uint32(z.scratch[:4])
	if checksum != z.digest.Sum32() {
		z.err = ErrChecksum
		return n, z.err
	}
	return n, io.EOF
}

// license that can be found in the LICENSE file.

//go:build armbe || arm64be || m68k || mips || mips64 || mips64p32 || ppc || ppc64 || s390 || s390x || shbe || sparc || sparc64

package binary

type nativeEndian struct {
	bigEndian
}

// NativeEndian is the native-endian implementation of [ByteOrder] and [AppendByteOrder].

	// amd64:-`BSWAPQ`
	binary.BigEndian.PutUint64(b[:], binary.BigEndian.Uint64(x[:]))
}

func store_be32_load(b, x *[8]byte) {
	// arm64:-`REVW`
	// amd64:-`BSWAPL`
	binary.BigEndian.PutUint32(b[:], binary.BigEndian.Uint32(x[:]))
}

func store_be32_idx(b []byte, x uint32, idx int) {
	// amd64/v1,amd64/v2:`BSWAPL`,-`SHR.`
	// amd64/v3:`MOVBEL\t[A-Z]+[0-9]*, \([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`

	CanMergeLoads:  false,
	HasLR:          true,
	FixedFrameSize: 8, // LR
}

var ArchMIPS = &Arch{
	Name:           "mips",
	Family:         MIPS,
	ByteOrder:      binary.BigEndian,
	PtrSize:        4,
	RegSize:        4,
	MinLC:          4,
	Alignment:      4,
	CanMergeLoads:  false,
	HasLR:          true,
	FixedFrameSize: 4, // LR
}

var ArchMIPSLE = &Arch{

	}
	if z.dict != nil {
		z.scratch[1] |= 1 << 5
	}
	z.scratch[1] += uint8(31 - binary.BigEndian.Uint16(z.scratch[:2])%31)
	if _, err = z.w.Write(z.scratch[0:2]); err != nil {
		return err
	}
	if z.dict != nil {
		// The next four bytes are the Adler-32 checksum of the dictionary.
		binary.BigEndian.PutUint32(z.scratch[:], adler32.Checksum(z.dict))
		if _, err = z.w.Write(z.scratch[0:4]); err != nil {
			return err

	ph := new(prog)
	if err := binary.Read(sr, binary.BigEndian, ph); err != nil {
		return nil, err
	}

	f := &File{FileHeader: FileHeader{
		Magic:       ph.Magic,
		Bss:         ph.Bss,
		Entry:       uint64(ph.Entry),
		PtrSize:     4,
		LoadAddress: 0x1000,
		HdrSize:     4 * 8,
	}}

	if ph.Magic&Magic64 != 0 {
		if err := binary.Read(sr, binary.BigEndian, &f.Entry); err != nil {
			return nil, err
		}

	buf := new(bytes.Buffer)
	binary.Write(buf, binary.BigEndian, uint32(totalLength))
	binary.Write(buf, binary.BigEndian, uint32(headerLength))
	prelude := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(prelude))
	buf.Write(header)
	if payload != nil {
		buf.Write(payload)
	}
	message := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(message))

	return buf.Bytes()
}

	case "arm64":
		binary.LittleEndian.PutUint32(ill, 0xf90003ff) // MOVD ZR, (ZR)
	case "ppc64":
		binary.BigEndian.PutUint32(ill, 0xf8000000) // MOVD R0, (R0)
	case "ppc64le":
		binary.LittleEndian.PutUint32(ill, 0xf8000000) // MOVD R0, (R0)
	case "mips", "mips64":
		binary.BigEndian.PutUint32(ill, 0xfc000000) // MOVV R0, (R0)
	case "mipsle", "mips64le":
		binary.LittleEndian.PutUint32(ill, 0xfc000000) // MOVV R0, (R0)

	// match: (Arg {n} [off])
	// cond: is64BitInt(v.Type) && !config.BigEndian && v.Type.IsSigned() && !(b.Func.pass.name == "decompose builtin")
	// result: (Int64Make (Arg <typ.Int32> {n} [off+4]) (Arg <typ.UInt32> {n} [off]))
	for {
		off := auxIntToInt32(v.AuxInt)
		n := auxToSym(v.Aux)
		if !(is64BitInt(v.Type) && !config.BigEndian && v.Type.IsSigned() && !(b.Func.pass.name == "decompose builtin")) {
			break
		}