blob: aa665fde99a6a2957d2c9d9b4e5479fd3091ca39 [file] [log] [blame]
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package goobj
import "internal/buildcfg"
// Builtin (compiler-generated) function references appear
// frequently. We assign special indices for them, so they
// 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.
func BuiltinIdx(name string, abi int) int {
i, ok := builtinMap[name]
if !ok {
return -1
if buildcfg.Experiment.RegabiWrappers && builtins[i].abi != abi {
return -1
return i
//go:generate go run mkbuiltin.go
var builtinMap map[string]int
func init() {
builtinMap = make(map[string]int, len(builtins))
for i, b := range builtins {
builtinMap[] = i