tl.SetType(sym.STYPELINK)
	ldr.SetAttrLocal(tl.Sym(), true)
	tl.SetSize(int64(4 * len(typelinks)))
	tl.Grow(tl.Size())
	relocs := tl.AddRelocs(len(typelinks))
	for i, s := range typelinks {
		r := relocs.At(i)
		r.SetSym(s.Type)
		r.SetOff(int32(i * 4))
		r.SetSiz(4)
		r.SetType(objabi.R_ADDROFF)
	}

	ptrsize := ctxt.Arch.PtrSize
	il := ldr.CreateSymForUpdate("runtime.itablink", 0)
	il.SetType(sym.SITABLINK)

	s.SetFlag(0x12)
	s.SetSiz(12345)
	s.SetAlign(8)
	s.Write(w)

	var r Reloc
	r.SetOff(12)
	r.SetSiz(4)
	r.SetType(uint16(objabi.R_ADDR))
	r.SetAdd(54321)
	r.SetSym(SymRef{11, 22})
	r.Write(w)

	var a Aux
	a.SetType(AuxFuncInfo)
	a.SetSym(SymRef{33, 44})
	a.Write(w)

	w.wr.Flush()

	// Read them back and check.
	b := buf.Bytes()
	var s2 Sym
	s2.fromBytes(b)

		ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL)
		r.SetSym(syms.GOT)
		su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz()))
		return true

	case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOTENT):
		ld.AddGotSym(target, ldr, syms, targ, uint32(elf.R_390_GLOB_DAT))
		su := ldr.MakeSymbolUpdater(s)
		su.SetRelocType(rIdx, objabi.R_PCREL)
		ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL)
		r.SetSym(syms.GOT)

	o(0x1a000004)
	rel, _ := initfunc.AddRel(objabi.R_LOONG64_ADDR_HI)
	rel.SetOff(0)
	rel.SetSiz(4)
	rel.SetSym(ctxt.Moduledata)

	//	4:	02c00084	addi.d	$a0, $a0, 0
	//				4: R_LARCH_PCALA_LO12	local.moduledata
	o(0x02c00084)
	rel2, _ := initfunc.AddRel(objabi.R_LOONG64_ADDR_LO)
	rel2.SetOff(4)
	rel2.SetSiz(4)
	rel2.SetSym(ctxt.Moduledata)

	//	8:	50000000	b	0
	//				8: R_LARCH_B26	runtime.addmoduledata
	o(0x50000000)

	o(0xe08f0000)

	o(0xeafffffe)
	rel, _ := initfunc.AddRel(objabi.R_CALLARM)
	rel.SetOff(8)
	rel.SetSiz(4)
	rel.SetSym(addmoduledata)
	rel.SetAdd(0xeafffffe) // vomit

	o(0x00000000)

	rel2, _ := initfunc.AddRel(objabi.R_PCREL)
	rel2.SetOff(12)
	rel2.SetSiz(4)
	rel2.SetSym(ctxt.Moduledata)
	rel2.SetAdd(4)
}

// Preserve highest 8 bits of a, and do addition to lower 24-bit

	// Add some relocations to the new symbols.
	r1, _ := sb1.AddRel(objabi.R_ADDR)
	r1.SetOff(0)
	r1.SetSiz(1)
	r1.SetSym(ts1)
	r2, _ := sb1.AddRel(objabi.R_CALL)
	r2.SetOff(3)
	r2.SetSiz(8)
	r2.SetSym(ts2)
	r3, _ := sb2.AddRel(objabi.R_USETYPE)
	r3.SetOff(7)
	r3.SetSiz(1)
	r3.SetSym(ts3)

	// Add some data to the symbols.
	d1 := []byte{1, 2, 3}
	d2 := []byte{4, 5, 6, 7}
	sb1.AddBytes(d1)

			rels := ldr.Relocs(uw)
			for i := 0; i < rels.Count(); i++ {
				r := rels.At(i)
				rel, _ := xdata.AddRel(r.Type())
				rel.SetOff(int32(off) + r.Off())
				rel.SetSiz(r.Siz())
				rel.SetSym(r.Sym())
				rel.SetAdd(r.Add())
			}
		}

		// Reference:
		// https://learn.microsoft.com/en-us/cpp/build/exception-handling-x64#struct-runtime_function
		pdata.AddPEImageRelativeAddrPlus(ctxt.Arch, s, 0)

func (r *Reloc) SetSym(x SymRef) {
	binary.LittleEndian.PutUint32(r[15:], x.PkgIdx)
	binary.LittleEndian.PutUint32(r[19:], x.SymIdx)
}

func (r *Reloc) Set(off int32, size uint8, typ uint16, add int64, sym SymRef) {
	r.SetOff(off)
	r.SetSiz(size)
	r.SetType(typ)
	r.SetAdd(add)
	r.SetSym(sym)
}

func (r *Reloc) Write(w *Writer) { w.Bytes(r[:]) }

	o(0x91000000)
	rel, _ := initfunc.AddRel(objabi.R_ADDRARM64)
	rel.SetOff(0)
	rel.SetSiz(8)
	rel.SetSym(ctxt.Moduledata)

	// 8:	14000000 	b	0 <runtime.addmoduledata>
	// 	8: R_AARCH64_CALL26	runtime.addmoduledata
	o(0x14000000)
	rel2, _ := initfunc.AddRel(objabi.R_CALLARM64)
	rel2.SetOff(8)
	rel2.SetSiz(4)
	rel2.SetSym(addmoduledata)
}

	sb.relocs[i].SetType(uint16(t))
}

// SetRelocSym sets the target sym of the 'i'-th relocation on this sym to 's'
func (sb *SymbolBuilder) SetRelocSym(i int, tgt Sym) {
	sb.relocs[i].SetSym(goobj.SymRef{PkgIdx: 0, SymIdx: uint32(tgt)})
}

// SetRelocAdd sets the addend of the 'i'-th relocation on this sym to 'a'
func (sb *SymbolBuilder) SetRelocAdd(i int, a int64) {
	sb.relocs[i].SetAdd(a)
}