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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:14:23 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:14:23 +0000
commit73df946d56c74384511a194dd01dbe099584fd1a (patch)
treefd0bcea490dd81327ddfbb31e215439672c9a068 /src/runtime/duff_s390x.s
parentInitial commit. (diff)
downloadgolang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz
golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/duff_s390x.s')
-rw-r--r--src/runtime/duff_s390x.s19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/runtime/duff_s390x.s b/src/runtime/duff_s390x.s
new file mode 100644
index 0000000..95d492a
--- /dev/null
+++ b/src/runtime/duff_s390x.s
@@ -0,0 +1,19 @@
+// 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.
+
+#include "go_asm.h"
+#include "go_tls.h"
+#include "textflag.h"
+
+// s390x can copy/zero 1-256 bytes with a single instruction,
+// so there's no need for these, except to satisfy the prototypes
+// in stubs.go.
+
+TEXT runtime·duffzero(SB),NOSPLIT|NOFRAME,$0-0
+ MOVD $0, 2(R0)
+ RET
+
+TEXT runtime·duffcopy(SB),NOSPLIT|NOFRAME,$0-0
+ MOVD $0, 2(R0)
+ RET