--- /dev/null
+// Copyright 2018 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.
+
+// +build !ppc64le,!arm64,!s390x arm64,!go1.11 gccgo appengine
+
+package chacha20
+
+const (
+ bufSize = 64
+ haveAsm = false
+)
+
+func (*Cipher) xorKeyStreamAsm(dst, src []byte) {
+ panic("not implemented")
+}