/* Set a block of memory to some byte value.  For IBM S390   Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.   This file is part of the GNU C Library.   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, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  *//* * R2 = address to memory area * R3 = byte to fill memory with * R4 = number of bytes to fill */#include "sysdep.h"#include "asm-syntax.h"	.textENTRY(memset)	ltr     %r4,%r4	jz      .L1	lr      %r0,%r2             # save source address	lr      %r1,%r3             # move pad byte to R1	lr      %r3,%r4	sr      %r4,%r4             # no source for MVCLE, only a pad byte	sr      %r5,%r5.L0:    mvcle   %r2,%r4,0(%r1)      # thats it, MVCLE is your friend	jo      .L0	lr      %r2,%r0             # return value is source address.L1:	br      %r14END(memset)libc_hidden_builtin_def (memset)