// Called from assembly only; declared for go vet.
func settls() // argument in DI

// Retpolines, used by -spectre=ret flag in cmd/asm, cmd/compile.
func retpolineAX()
func retpolineCX()
func retpolineDX()
func retpolineBX()
func retpolineBP()
func retpolineSI()
func retpolineDI()
func retpolineR8()
func retpolineR9()
func retpolineR10()
func retpolineR11()
func retpolineR12()
func retpolineR13()

// asmcheck -gcflags=-spectre=ret

//go:build amd64

package codegen

func CallFunc(f func()) {
	// amd64:`CALL\truntime.retpoline`
	f()
}

func CallInterface(x interface{ M() }) {
	// amd64:`CALL\truntime.retpoline`
	x.M()
}

// Check to make sure that jump tables are disabled
// when retpoline is on. See issue 57097.
func noJumpTables(x int) int {
	switch x {
	case 0:
		return 0
	case 1:
		return 1

		os.Exit(2)
	case "":
		// nothing
	case "index":
		// known to compiler; ignore here so people can use
		// the same list with -gcflags=-spectre=LIST and -asmflags=-spectrre=LIST
	case "all", "ret":
		ctxt.Retpoline = true
	}

	ctxt.Bso = bufio.NewWriter(os.Stdout)
	defer ctxt.Bso.Flush()

	architecture.Init(ctxt)

	// Create object file, write header.
	buf, err := bio.Create(*flags.OutputFile)
	if err != nil {