"386":         {4, 4},
	"alpha":       {8, 8},
	"amd64":       {8, 8},
	"amd64p32":    {4, 8},
	"arm":         {4, 8},
	"armbe":       {4, 8},
	"arm64":       {8, 8},
	"arm64be":     {8, 8},
	"ia64":        {8, 8},
	"loong64":     {8, 8},
	"m68k":        {4, 2},
	"mips":        {4, 8},
	"mipsle":      {4, 8},
	"mips64":      {8, 8},
	"mips64le":    {8, 8},
	"mips64p32":   {4, 8},
	"mips64p32le": {4, 8},

        // TODO:ADAM - ARM only if the target OS is Windows 8 or later
        // TODO:MPUT - ARM also if the target OS is Windows RT or Windows Phone/Mobile/CE
        // TODO:ADAM - IA64 only if the target OS is Windows 2008 or earlier
        if (!targetPlatform.getOperatingSystem().isWindows()) {
            return null;
        }
        return platforms.get(getPlatformArchitecture(targetPlatform));
    }

    /**
     * 32-bit complex instruction set computer (CISC) architectures, including "x32", "i386", "x86"..
     */
    X86,

    /**
     * 64-bit variant of the X86 instruction set, including "x64", "x86_64", "amd64", "ia64".
     */
    X86_64,

    /**
     * 64-bit reduced instruction set computer (RISC) architectures, including "aarch64", "arm64".
     */
    AARCH64

	}

	// read header
	elfobj := new(ElfObj)

	elfobj.e = e
	elfobj.f = f
	elfobj.base = base
	elfobj.length = length
	elfobj.name = pn

	is64 := 0
	class := elf.Class(hdrbuf[elf.EI_CLASS])
	if class == elf.ELFCLASS64 {
		is64 = 1
		hdr := new(elf.Header64)
		binary.Read(bytes.NewReader(hdrbuf[:]), e, hdr)
		elfobj.type_ = uint32(hdr.Type)
		elfobj.machine = uint32(hdr.Machine)

 *         <td>"x86", "i386", "ia-32", "i686"</td>
 *         <td>"x86_64", "amd64", "x64", "x86-64"</td>
 *     </tr>
 *     <tr>
 *         <td>Intel Itanium</td>
 *         <td>N/A</td>
 *         <td>"ia-64", "ia64"</td>
 *     </tr>
 *     <tr>
 *         <td>Power PC</td>
 *         <td>"ppc"</td>
 *         <td>"ppc64"</td>
 *     </tr>
 *     <tr>
 *         <td>Sparc</td>

    public static final KnownArchitecture X86_64 = new KnownArchitecture("x86-64", "x86_64", "amd64", "x64");
    public static final KnownArchitecture IA_64 = new KnownArchitecture("ia-64", "ia64");
    public static final KnownArchitecture ARM_V7 = new KnownArchitecture("arm-v7", "armv7", "arm", "arm32");
    public static final KnownArchitecture AARCH64 = new KnownArchitecture("aarch64", "arm-v8", "arm64");

        switch (archString) {
            case "x86":
                return Architectures.forInput("x86")
            case "x64":
                return Architectures.forInput("x86_64")
            case "IA64":
                return Architectures.forInput("ia-64")
            case "ARM":
                return Architectures.forInput("arm")
            default:

	// describe a broader range of dates.

	is64 := false
	if version > 1 {
		// Skip the 32-bit data.
		skip := n[NTime]*4 +
			n[NTime] +
			n[NZone]*6 +
			n[NChar] +
			n[NLeap]*8 +
			n[NStdWall] +
			n[NUTCLocal]
		// Skip the version 2 header that we just read.
		skip += 4 + 16
		d.read(skip)

		is64 = true

		// Read the counts again, they can differ.

        "32-bit" | SystemInfo.Architecture.i386  | "ia64"         | false          | LEGACY_IA64_ON_X86
        "64-bit" | SystemInfo.Architecture.amd64 | "ia64"         | true           | LEGACY_IA64_ON_X86
        "64-bit" | SystemInfo.Architecture.amd64 | "ia64"         | false          | LEGACY_IA64_ON_X86

		boff := b.off
		d.typeSigs[sig] = &typeUnit{
			unit: unit{
				base:   base,
				off:    boff,
				data:   b.bytes(int(n - (b.off - hdroff))),
				atable: atable,
				asize:  int(asize),
				vers:   vers,
				is64:   dwarf64,
			},
			toff: Offset(toff),
			name: name,
		}
		if b.err != nil {
			return b.err
		}
	}
	return nil
}

// Return the type for a type signature.