func TestDedupLibraries(t *testing.T) {
	ctxt := &Link{}
	ctxt.Target.HeadType = objabi.Hlinux

	libs := []string{"libc.so", "libc.so.6"}

	got := dedupLibraries(ctxt, libs)
	if !reflect.DeepEqual(got, libs) {
		t.Errorf("dedupLibraries(%v) = %v, want %v", libs, got, libs)
	}
}

func TestDedupLibrariesOpenBSD(t *testing.T) {
	ctxt := &Link{}
	ctxt.Target.HeadType = objabi.Hopenbsd

	tests := []struct {
		libs []string

// and the error can be obtained by calling bitReader.Err().
func (br *bitReader) ReadBits64(bits uint) (n uint64) {
	for bits > br.bits {
		b, err := br.r.ReadByte()
		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		if err != nil {
			br.err = err
			return 0
		}
		br.n <<= 8
		br.n |= uint64(b)
		br.bits += 8
	}

func (r *Reader) Version() version.Version {
	return r.v
}

// ReadEvent reads and returns the next trace event in the byte stream.
func (r *Reader) ReadEvent() (Event, error) {
	evb, err := r.r.ReadByte()
	if err == io.EOF {
		return Event{}, io.EOF
	}
	if err != nil {
		return Event{}, err
	}
	if int(evb) >= len(r.specs) || evb == 0 {
		return Event{}, fmt.Errorf("invalid event type: %d", evb)
	}

			Reloc1:    elfreloc1,
			RelocSize: 24,
			SetupPLT:  elfsetupplt,
		},
	}

	return arch, theArch
}

func archinit(ctxt *ld.Link) {
	switch ctxt.HeadType {
	default:
		ld.Exitf("unknown -H option: %v", ctxt.HeadType)

	case objabi.Hlinux: // s390x ELF
		ld.Elfinit(ctxt)
		ld.HEADR = ld.ELFRESERVE
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 0x10000
		}
		if *ld.FlagTextAddr == -1 {

            assert str.readByte() == 3
            str.readLong()
            if (dirty) {
                assert str.readLong() == 0
            } else {
                assert str.readLong() != 0
            }
            // info version + port, lock-id, pid, operation-name
            assert str.readByte() == 3
            assert str.readInt() == 34

        if (str != null) {
            str = stringInterner.intern(str);
        }
        return str;
    }

    @Override
    public byte readByte() throws EOFException, IOException {
        return delegate.readByte();
    }

    @Override
    public void readBytes(byte[] buffer) throws EOFException, IOException {
        delegate.readBytes(buffer);
    }

    @Override

	if ldr.SymDynid(s) >= 0 || target.LinkMode == LinkExternal {
		return
	}

	if target.IsELF {
		elfadddynsym(ldr, target, syms, s)
	} else if target.HeadType == objabi.Hdarwin {
		ldr.Errorf(s, "adddynsym: missed symbol (Extname=%s)", ldr.SymExtname(s))
	} else if target.HeadType == objabi.Hwindows {
		// already taken care of
	} else {
		ldr.Errorf(s, "adddynsym: unsupported binary format")
	}
}

			// .dynamic section.
			DynamicReadOnly: true,
		},
	}

	return arch, theArch
}

func archinit(ctxt *ld.Link) {
	switch ctxt.HeadType {
	default:
		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
	case objabi.Hlinux: /* mips elf */
		ld.Elfinit(ctxt)
		ld.HEADR = ld.ELFRESERVE
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 0x10000
		}
		if *ld.FlagTextAddr == -1 {

			Reloc1:    elfreloc1,
			RelocSize: 24,
			SetupPLT:  elfsetupplt,
		},
	}

	return arch, theArch
}

func archinit(ctxt *ld.Link) {
	switch ctxt.HeadType {
	default:
		ld.Exitf("unknown -H option: %v", ctxt.HeadType)

	case objabi.Hplan9: /* plan 9 */
		ld.HEADR = 32
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 4096
		}
		if *ld.FlagTextAddr == -1 {

    // 0 - 63 bytes
    var length = source.readByte().toInt()

    if (length < 0) {
      // compressed name pointer, first two bits are 1
      // drop second byte of compression offset
      source.skip(1)
    } else {
      while (length > 0) {
        // skip each part of the domain name
        source.skip(length.toLong())
        length = source.readByte().toInt()
      }
    }
  }