// write out Xi RET gcm_ghash_p8_4x: LVSL (R8)(R0), T0 // 0x0001..0e0f MOVD $0x70, R8 LXVD2X (HTBL)(R9), VH2 MOVD $0x80, R9 VSPLTISB $8, T1 // 0x0808..0808 MOVD $0x90, R10 LXVD2X (HTBL)(R8), VH3L // load H^3 MOVD $0xa0, R8 LXVD2X (HTBL)(R9), VH3 MOVD $0xb0, R9 LXVD2X (HTBL)(R10), VH3H MOVD $0xc0, R10 LXVD2X (HTBL)(R8), VH4L // load H^4 MOVD $0x10, R8 LXVD2X (HTBL)(R9), VH4 MOVD $0x20, R9 LXVD2X (HTBL)(R10), VH4H MOVD $0x30, R10 VSLDOI $8, ZERO, T1, T2 // 0x0000..0808 VADDUBM T0, T2, HIPERM // 0x0001..1617...

		0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
		0x50, 0x4b, 0x01, 0x02, 0x14, 0x03, 0x14, 0x00,
		0x08, 0x00, 0x00, 0x00, 0x6b, 0xb4, 0xba, 0x46,
		0x1d, 0x88, 0x77, 0xb0, 0x07, 0x00, 0x00, 0x00,
		0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x18, 0x00,
		0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0xa0, 0x81, 0x00, 0x00, 0x00, 0x00, 0xca, 0x64,
		0x55, 0x75, 0x78, 0x0b, 0x00, 0x50, 0x4b, 0x05,

	for _, c := range s {
		if c >= 0x80 || c == 0x00 {
			return false
		}
	}
	return true
}

// toASCII converts the input to an ASCII C-style string.
// This is a best effort conversion, so invalid characters are dropped.
func toASCII(s string) string {
	if isASCII(s) {
		return s
	}
	b := make([]byte, 0, len(s))
	for _, c := range s {
		if c < 0x80 && c != 0x00 {
			b = append(b, byte(c))
		}
	}

    <magic priority="55">
      <!-- Technically the header offset is stored at 0x3c, and isn't a -->
      <!-- constant, but it's almost always set to start at 0x80, 0xb0, -->
      <!-- 0xd0 or 0xf0. Will always have the MZ msdoc header too. -->
      <match value="MZ" type="string" offset="0">
         <match value="PE\000\000" type="string" offset="128"/>

	MOVHU	R3, 0x20(R4)         // MOVHU R3, 32(R4)          // b032c4e1
	MOVHU.W	R3, 0x20(R4)         // MOVHU.W R3, 32(R4)        // b032e4e1
	MOVHU.P	R3, 0x20(R4)         // MOVHU.P R3, 32(R4)        // b032c4e0
	MOVH	R3, -0x20(R4)        // MOVH R3, -32(R4)          // b03244e1
	MOVH.W	R3, -0x20(R4)        // MOVH.W R3, -32(R4)        // b03264e1
	MOVH.P	R3, -0x20(R4)        // MOVH.P R3, -32(R4)        // b03244e0

	MOVF.NE	(g), F3                                   // 003a9a1d
	MOVD	(g), F3                                   // 003b9aed
	MOVF	0x20(R3), F9       // MOVF 32(R3), F9     // 089a93ed
	MOVD.EQ	0x20(R4), F9       // MOVD.EQ 32(R4), F9  // 089b940d
	MOVF.NE	-0x20(g), F3       // MOVF.NE -32(g), F3  // 083a1a1d
	MOVD	-0x20(g), F3       // MOVD -32(g), F3     // 083b1aed
	MOVF	F9, (R4)                                  // 009a84ed

			prefix = p.parseString(ustar.prefix())

			// For Format detection, check if block is properly formatted since
			// the parser is more liberal than what USTAR actually permits.
			notASCII := func(r rune) bool { return r >= 0x80 }
			if bytes.IndexFunc(tr.blk[:], notASCII) >= 0 {
				hdr.Format = FormatUnknown // Non-ASCII characters in block.
			}
			nul := func(b []byte) bool { return int(b[len(b)-1]) == 0 }

     * according to the XML 1.0 specification. Valid characters include:
     * - Tab (0x9)
     * - Line feed (0xA)
     * - Carriage return (0xD)
     * - Any character between 0x20 and 0xD7FF
     * - Any character between 0xE000 and 0xFFFD
     * - Any character between 0x10000 and 0x10FFFF
     *
     * @param in the input string to be processed

			Devminor: 0,
			Format:   FormatGNU,
		}, {
			Name:     "sparse-posix-0.0",
			Mode:     420,
			Uid:      1000,
			Gid:      1000,
			Size:     200,
			ModTime:  time.Unix(1392342187, 0),
			Typeflag: 0x30,
			Linkname: "",
			Uname:    "david",
			Gname:    "david",
			Devmajor: 0,
			Devminor: 0,
			PAXRecords: map[string]string{
				"GNU.sparse.size":      "200",
				"GNU.sparse.numblocks": "95",

	s_IFLNK  = 0xa000
	s_IFREG  = 0x8000
	s_IFBLK  = 0x6000
	s_IFDIR  = 0x4000
	s_IFCHR  = 0x2000
	s_IFIFO  = 0x1000
	s_ISUID  = 0x800
	s_ISGID  = 0x400
	s_ISVTX  = 0x200

	msdosDir      = 0x10
	msdosReadOnly = 0x01
)

// Mode returns the permission and mode bits for the [FileHeader].
func (h *FileHeader) Mode() (mode fs.FileMode) {
	switch h.CreatorVersion >> 8 {
	case creatorUnix, creatorMacOSX: