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+/* bzero -- set a block of memory to zero. 64 bit S/390 version.
+ This file is part of the GNU C Library.
+ Copyright (C) 2001-2017 Free Software Foundation, Inc.
+ Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+ 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/>. */
+
+/* INPUT PARAMETERS
+ %r2 = address of memory area
+ %r3 = number of bytes to fill. */
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+ .text
+ENTRY(__bzero)
+ ltgr %r3,%r3
+ jz .L1
+ sgr %r1,%r1 # set pad byte to zero
+ sgr %r4,%r4 # no source for MVCLE, only a pad byte
+ sgr %r5,%r5
+.L0: mvcle %r2,%r4,0(%r1) # thats it, MVCLE is your friend
+ jo .L0
+.L1: br %r14
+END(__bzero)
+
+#ifndef NO_WEAK_ALIAS
+weak_alias (__bzero, bzero)
+#endif