1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-64/memcpy.S b/sysdeps/s390/s390-64/memcpy.S
new file mode 100644
index 0000000000..c59d3fbb79
--- /dev/null
+++ b/sysdeps/s390/s390-64/memcpy.S
@@ -0,0 +1,41 @@
+/* Set a block of memory to some byte value.  64 bit S/390 version.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* INPUT PARAMETERS
+     %r2 = address to destination memory area
+     %r3 = address to source memory area
+     %r4 = number of bytes to copy.  */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	.text
+ENTRY(memcpy)
+	ltgr	%r5,%r4
+	jz	.L1
+	lgr	%r4,%r3		    # %r4/%r5 = source ptr/len
+	lgr	%r3,%r5		    # %r2/%r3 = dest ptr/len
+	lgr	%r0,%r2		    # save source address
+.L0:	mvcle	%r2,%r4,0	    # thats it, MVCLE is your friend
+	jo	.L0
+	lgr	%r2,%r0		    # return value is source address
+.L1:
+	br	%r14
+END(memset)