glibc/sysdeps/s390/s390-64/memset.S
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

44 lines
1.5 KiB
ArmAsm

/* 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 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. */
/* INPUT PARAMETERS
%r2 = address of memory area
%r3 = byte to fill memory with
%r4 = number of bytes to fill. */
#include "sysdep.h"
#include "asm-syntax.h"
.text
ENTRY(memset)
ltgr %r4,%r4
jz .L1
lgr %r0,%r2 # save source address
lgr %r1,%r3 # move pad byte to R1
lgr %r3,%r4
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
lgr %r2,%r0 # return value is source address
.L1:
br %r14
END(memset)