1 /* Set a block of memory to some byte value. 64 bit S/390 version.
2 Copyright (C) 2001, 2003 Free Software Foundation, Inc.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 %r2 = address of memory area
23 %r3 = byte to fill memory with
24 %r4 = number of bytes to fill. */
27 #include "asm-syntax.h"
33 lgr %r0,%r2 # save source address
34 lgr %r1,%r3 # move pad byte to R1
36 sgr %r4,%r4 # no source for MVCLE, only a pad byte
38 .L0: mvcle %r2,%r4,0(%r1) # thats it, MVCLE is your friend
40 lgr %r2,%r0 # return value is source address
44 libc_hidden_builtin_def (memset)