// in the final binary.
func processSEH(ldr *loader.Loader, arch *sys.Arch, pdata sym.LoaderSym, xdata sym.LoaderSym) error {
	switch arch.Family {
	case sys.AMD64:
		ldr.SetAttrReachable(pdata, true)
		if xdata != 0 {
			ldr.SetAttrReachable(xdata, true)
		}
		return processSEHAMD64(ldr, pdata)
	default:
		// TODO: support SEH on other architectures.
		return fmt.Errorf("unsupported architecture for SEH: %v", arch.Family)

		// an init function
		return nil, 0
	}
	ctxt.loader.SetAttrReachable(amd, true)

	// Create a new init func text symbol. Caller will populate this
	// sym with arch-specific content.
	ifs := ctxt.loader.LookupOrCreateSym("go:link.addmoduledata", 0)
	initfunc := ctxt.loader.MakeSymbolUpdater(ifs)
	ctxt.loader.SetAttrReachable(ifs, true)
	ctxt.loader.SetAttrLocal(ifs, true)
	initfunc.SetType(sym.STEXT)