sizeExtRelocs(ctxt, thearch.MachorelocSize)
	relocSect, wg := relocSectFn(ctxt, machorelocsect)

	relocSect(ctxt, Segtext.Sections[0], ctxt.Textp)
	for _, sect := range Segtext.Sections[1:] {
		if sect.Name == ".text" {
			relocSect(ctxt, sect, ctxt.Textp)
		} else {
			relocSect(ctxt, sect, ctxt.datap)
		}
	}
	for _, sect := range Segrelrodata.Sections {
		relocSect(ctxt, sect, ctxt.datap)
	}

func (f *peFile) emitRelocations(ctxt *Link) {
	for ctxt.Out.Offset()&7 != 0 {
		ctxt.Out.Write8(0)
	}

	ldr := ctxt.loader

	// relocsect relocates symbols from first in section sect, and returns
	// the total number of relocations emitted.
	relocsect := func(sect *sym.Section, syms []loader.Sym, base uint64) int {
		// If main section has no bits, nothing to relocate.
		if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {

		pr.scratchRelocEnt = nil
	} else {
		r.Relocs = make([]RelocEnt, l)
	}
	for i := range r.Relocs {
		r.Sync(SyncReloc)
		r.Relocs[i] = RelocEnt{RelocKind(r.Len()), Index(r.Len())}
	}

	return r
}

// A Decoder provides methods for decoding an individual element's
// bitstream data.
type Decoder struct {
	common *PkgDecoder

	Relocs []RelocEnt
	Data   strings.Reader

	k   RelocKind