src/runtime/atomic_arm64.s - go - Git at Google

 // Copyright 2014 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.

 #include "textflag.h"

 TEXT ·publicationBarrier(SB),NOSPLIT,$-8-0
 	DMB	$0xe	// DMB ST
 	RET
	// Copyright 2014 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.

	#include "textflag.h"

	TEXT ·publicationBarrier(SB),NOSPLIT,$-8-0
	DMB $0xe // DMB ST
	RET