// don't need to be referenced by name.

// NBuiltin returns the number of listed builtin
// symbols.
func NBuiltin() int {
	return len(builtins)
}

// BuiltinName returns the name and ABI of the i-th
// builtin symbol.
func BuiltinName(i int) (string, int) {
	return builtins[i].name, builtins[i].abi
}

// BuiltinIdx returns the index of the builtin with the
// given name and abi, or -1 if it is not a builtin.

			i = s.SymIdx + uint32(r.NSym()+r.NHashed64def())
		case goobj.PkgIdxNone:
			i = s.SymIdx + uint32(r.NSym()+r.NHashed64def()+r.NHasheddef())
		case goobj.PkgIdxBuiltin:
			name, abi := goobj.BuiltinName(int(s.SymIdx))
			return goobjName(name, abi)
		case goobj.PkgIdxSelf:
			i = s.SymIdx
		default:
			return refNames[s]
		}
		sym := r.Sym(i)
		return goobjName(sym.Name(r), abiToVer(sym.ABI()))
	}

// on in the linker due to R_CALL relocations with 0-valued target
// symbols.
func (l *Loader) reportMissingBuiltin(bsym int, reflib string) {
	bname, _ := goobj.BuiltinName(bsym)
	log.Fatalf("reference to undefined builtin %q from package %q",
		bname, reflib)
}

// Look up a symbol by name, return global index, or 0 if not found.