of, err := objfile.Open(name)
	if err != nil {
		return nil, err
	}
	f := &file{
		name: name,
		file: of,
	}
	if start != 0 {
		if load, err := of.LoadAddress(); err == nil {
			f.offset = start - load
		}
	}
	return f, nil
}

func (*objTool) Demangle(names []string) (map[string]string, error) {
	// No C++, nothing to demangle.

		{"File.FileHeader", Field, 3},
		{"File.Sections", Field, 3},
		{"FileHeader", Type, 3},
		{"FileHeader.Bss", Field, 3},
		{"FileHeader.Entry", Field, 3},
		{"FileHeader.HdrSize", Field, 4},
		{"FileHeader.LoadAddress", Field, 4},
		{"FileHeader.Magic", Field, 3},
		{"FileHeader.PtrSize", Field, 3},
		{"Magic386", Const, 3},
		{"Magic64", Const, 3},
		{"MagicAMD64", Const, 3},
		{"MagicARM", Const, 3},