func decodeReloc(ldr *loader.Loader, symIdx loader.Sym, relocs *loader.Relocs, off int32) loader.Reloc {
	for j := 0; j < relocs.Count(); j++ {
		rel := relocs.At(j)
		if rel.Off() == off {
			return rel
		}
	}
	return loader.Reloc{}
}

func decodeRelocSym(ldr *loader.Loader, symIdx loader.Sym, relocs *loader.Relocs, off int32) loader.Sym {
	return decodeReloc(ldr, symIdx, relocs, off).Sym()
}

}

// Add a relocation with given type, return its handle and index
// (to set other fields).
func (sb *SymbolBuilder) AddRel(typ objabi.RelocType) (Reloc, int) {
	j := len(sb.relocs)
	sb.relocs = append(sb.relocs, goobj.Reloc{})
	sb.relocs[j].SetType(uint16(typ))
	relocs := sb.Relocs()
	return relocs.At(j), j
}

// Sort relocations by offset.
func (sb *SymbolBuilder) SortRelocs() {

func findHI20Reloc(ldr *loader.Loader, s loader.Sym, val int64) *loader.Reloc {
	outer := ldr.OuterSym(s)
	if outer == 0 {
		return nil
	}
	relocs := ldr.Relocs(outer)
	start := sort.Search(relocs.Count(), func(i int) bool { return ldr.SymValue(outer)+int64(relocs.At(i).Off()) >= val })
	for idx := start; idx < relocs.Count(); idx++ {
		r := relocs.At(idx)
		if ldr.SymValue(outer)+int64(r.Off()) != val {
			break
		}

// to mapinit symbols that are no longer reachable. It rewrites
// the relocs to target a new no-op routine in the runtime.
func (d *deadcodePass) mapinitcleanup() {
	for _, idx := range d.pkginits {
		relocs := d.ldr.Relocs(idx)
		var su *loader.SymbolBuilder
		for i := 0; i < relocs.Count(); i++ {
			r := relocs.At(i)
			rs := r.Sym()
			if r.Weak() && r.Type().IsDirectCall() && !d.ldr.AttrReachable(rs) {

	tl := ldr.CreateSymForUpdate("runtime.typelink", 0)
	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

	}

	r.Data.Reset(pr.DataIdx(k, idx))
	r.Sync(SyncRelocs)
	l := r.Len()
	if cap(pr.scratchRelocEnt) >= l {
		r.Relocs = pr.scratchRelocEnt[:l]
		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
}

	if err != nil {
		return nil, fmt.Errorf("fail to seek to %q section relocations: %v", sh.Name, err)
	}
	relocs := make([]Reloc, sh.NumberOfRelocations)
	err = binary.Read(r, binary.LittleEndian, relocs)
	if err != nil {
		return nil, fmt.Errorf("fail to read section relocations: %v", err)
	}
	return relocs, nil
}

// SectionHeader is similar to [SectionHeader32] with Name
// field replaced by Go string.

		}

		sym := Sym{
			Name: name,
			Addr: uint64(r.DataOff(i)),
			Size: int64(osym.Siz()),
			Code: code,
		}

		relocs := r.Relocs(i)
		sym.Relocs = make([]Reloc, len(relocs))
		for j := range relocs {
			rel := &relocs[j]
			sym.Relocs[j] = Reloc{
				Addr: uint64(r.DataOff(i)) + uint64(rel.Off()),
				Size: uint64(rel.Siz()),
				Stringer: goobjReloc{
					Off:  rel.Off(),

		relocs := plt.Relocs()
		plt.SetRelocType(relocs.Count()-1, objabi.R_ARM64_GOT)

		// <offset> is the offset value of &got.plt[n] to &got.plt[0]
		// ldr     x17, [x16, <offset>]
		plt.AddAddrPlus4(target.Arch, gotplt.Sym(), gotplt.Size())
		plt.SetUint32(target.Arch, plt.Size()-4, 0xf9400211)
		relocs = plt.Relocs()
		plt.SetRelocType(relocs.Count()-1, objabi.R_ARM64_GOT)

				}
			}
			// modify reloc to point to tramp, which will be resolved later
			sb := ldr.MakeSymbolUpdater(s)
			relocs := sb.Relocs()
			r := relocs.At(ri)
			r.SetSym(tramp)
			r.SetAdd(r.Add()&0xff000000 | 0xfffffe) // clear the offset embedded in the instruction
		}
	default:
		ctxt.Errorf(s, "trampoline called with non-jump reloc: %d (%s)", r.Type(), sym.RelocName(ctxt.Arch, r.Type()))
	}
}