nundefsym      uint32
	tocoff         uint32
	ntoc           uint32
	modtaboff      uint32
	nmodtab        uint32
	extrefsymoff   uint32
	nextrefsyms    uint32
	indirectsymoff uint32
	nindirectsyms  uint32
	extreloff      uint32
	nextrel        uint32
	locreloff      uint32
	nlocrel        uint32
	indir          []uint32
}

// ldMachoSym.type_
const (
	N_EXT  = 0x01
	N_TYPE = 0x1e

		Nundefsym      uint32
		Tocoffset      uint32
		Ntoc           uint32
		Modtaboff      uint32
		Nmodtab        uint32
		Extrefsymoff   uint32
		Nextrefsyms    uint32
		Indirectsymoff uint32
		Nindirectsyms  uint32
		Extreloff      uint32
		Nextrel        uint32
		Locreloff      uint32
		Nlocrel        uint32
	}

	// A DylibCmd is a Mach-O load dynamic library command.
	DylibCmd struct {

			}
			dat, err := saferio.ReadDataAt(r, uint64(hdr.Nindirectsyms)*4, int64(hdr.Indirectsymoff))
			if err != nil {
				return nil, err
			}
			x := make([]uint32, hdr.Nindirectsyms)
			if err := binary.Read(bytes.NewReader(dat), bo, x); err != nil {
				return nil, err
			}
			st := new(Dysymtab)
			st.LoadBytes = LoadBytes(cmddat)
			st.DysymtabCmd = hdr
			st.IndirectSyms = x
			f.Loads = append(f.Loads, st)

	s2 := ldr.SymSize(ctxt.ArchSyms.LinkEditPLT)
	s3 := ldr.SymSize(ctxt.ArchSyms.LinkEditGOT)
	ml.data[12] = uint32(base + s1)     /* indirectsymoff */
	ml.data[13] = uint32((s2 + s3) / 4) /* nindirectsyms */

	ml.data[14] = 0 /* extreloff */
	ml.data[15] = 0 /* nextrel */
	ml.data[16] = 0 /* locreloff */
	ml.data[17] = 0 /* nlocrel */
}

func doMachoLink(ctxt *Link) int64 {

		{"DysymtabCmd.Locreloff", Field, 0},
		{"DysymtabCmd.Modtaboff", Field, 0},
		{"DysymtabCmd.Nextdefsym", Field, 0},
		{"DysymtabCmd.Nextrefsyms", Field, 0},
		{"DysymtabCmd.Nextrel", Field, 0},
		{"DysymtabCmd.Nindirectsyms", Field, 0},
		{"DysymtabCmd.Nlocalsym", Field, 0},
		{"DysymtabCmd.Nlocrel", Field, 0},
		{"DysymtabCmd.Nmodtab", Field, 0},
		{"DysymtabCmd.Ntoc", Field, 0},
		{"DysymtabCmd.Nundefsym", Field, 0},

pkg debug/macho, type DysymtabCmd struct, Nextdefsym uint32
pkg debug/macho, type DysymtabCmd struct, Nextrefsyms uint32
pkg debug/macho, type DysymtabCmd struct, Nextrel uint32
pkg debug/macho, type DysymtabCmd struct, Nindirectsyms uint32
pkg debug/macho, type DysymtabCmd struct, Nlocalsym uint32
pkg debug/macho, type DysymtabCmd struct, Nlocrel uint32
pkg debug/macho, type DysymtabCmd struct, Nmodtab uint32