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diff --git a/REORG.TODO/sysdeps/x86_64/memmove_chk.S b/REORG.TODO/sysdeps/x86_64/memmove_chk.S
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+++ b/REORG.TODO/sysdeps/x86_64/memmove_chk.S
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+/* Checking memmove for x86-64.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include "asm-syntax.h"
+
+#ifndef SHARED
+	/* For libc.so this is defined in memmove.S.
+	   For libc.a, this is a separate source to avoid
+	   memmove bringing in __chk_fail and all routines
+	   it calls.  */
+        .text
+ENTRY (__memmove_chk)
+	cmpq	%rdx, %rcx
+	jb	__chk_fail
+	jmp	memmove
+END (__memmove_chk)
+#endif