ctxt := linknew(arch)
	ctxt.HeadType = ht
	er := loader.ErrorReporter{}
	ctxt.loader = loader.NewLoader(0, &er)
	ctxt.BuildMode.Set(bm)
	ctxt.LinkMode.Set(lm)
	ctxt.IsELF = iself
	ctxt.mustSetHeadType()
	ctxt.setArchSyms()
	return ctxt
}

// Make sure the addgotsym properly increases the symbols.
func TestAddGotSym(t *testing.T) {
	tests := []struct {
		arch    *sys.Arch
		ht      objabi.HeadType
		bm, lm  string

		ctxt.windynrelocsyms()
	}
	if ctxt.IsAIX() {
		bench.Start("doxcoff")
		ctxt.doxcoff()
	}

	bench.Start("textbuildid")
	ctxt.textbuildid()
	bench.Start("addexport")
	ctxt.setArchSyms()
	ctxt.addexport()
	bench.Start("Gentext")
	thearch.Gentext(ctxt, ctxt.loader) // trampolines, call stubs, etc.

	bench.Start("textaddress")
	ctxt.textaddress()
	bench.Start("typelink")
	ctxt.typelink()

	// to be run at startup.
	mainInittasks loader.Sym
}

// mkArchSym is a helper for setArchSyms, to set up a special symbol.
func (ctxt *Link) mkArchSym(name string, ver int, ls *loader.Sym) {
	*ls = ctxt.loader.LookupOrCreateSym(name, ver)
	ctxt.loader.SetAttrReachable(*ls, true)
}

// mkArchSymVec is similar to  setArchSyms, but operates on elements within
// a slice, where each element corresponds to some symbol version.