s := ldr.CreateSymForUpdate("runtime.gcdata", 0)
	s.SetType(sym.SRODATA)
	s.SetSize(0)
	ctxt.xdefine("runtime.egcdata", sym.SRODATA, 0)

	s = ldr.CreateSymForUpdate("runtime.gcbss", 0)
	s.SetType(sym.SRODATA)
	s.SetSize(0)
	ctxt.xdefine("runtime.egcbss", sym.SRODATA, 0)

	// pseudo-symbols to mark locations of type, string, and go string data.
	var symtype, symtyperel loader.Sym
	if !ctxt.DynlinkingGo() {

	text, etext           uintptr
	noptrdata, enoptrdata uintptr
	data, edata           uintptr
	bss, ebss             uintptr
	noptrbss, enoptrbss   uintptr
	covctrs, ecovctrs     uintptr
	end, gcdata, gcbss    uintptr
	types, etypes         uintptr
	rodata                uintptr
	gofunc                uintptr // go.func.*

	textsectmap []textsect
	typelinks   []int32 // offsets from types
	itablinks   []*itab

	ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.egcdata", 0), ldr.SymSect(s))

	s = ldr.LookupOrCreateSym("runtime.gcbss", 0)
	ldr.SetAttrLocal(s, true)
	ctxt.xdefine("runtime.egcbss", sym.SRODATA, ldr.SymAddr(s)+ldr.SymSize(s))
	ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.egcbss", 0), ldr.SymSect(s))

	ctxt.xdefine("runtime.symtab", sym.SRODATA, int64(symtab.Vaddr))