1 files changed, 20 insertions, 0 deletions
diff --git a/src/crypto/sha256/sha256block_s390x.s b/src/crypto/sha256/sha256block_s390x.s
new file mode 100644
index 0000000..81b1b38
--- /dev/null
+++ b/src/crypto/sha256/sha256block_s390x.s
@@ -0,0 +1,20 @@
+// Copyright 2016 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"
+
+// func block(dig *digest, p []byte)
+TEXT ·block(SB), NOSPLIT|NOFRAME, $0-32
+	MOVBZ  ·useAsm(SB), R4
+	LMG    dig+0(FP), R1, R3            // R2 = &p[0], R3 = len(p)
+	MOVBZ  $2, R0                       // SHA-256 function code
+	CMPBEQ R4, $0, generic
+
+loop:
+	WORD $0xB93E0002 // KIMD R2
+	BVS  loop        // continue if interrupted
+	RET
+
+generic:
+	BR ·blockGeneric(SB)