/* Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Philip Blundell <philb@gnu.org>

   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/>.  */

/* Thumb requires excessive IT insns here.  */

#define NO_THUMB

#include <sysdep.h>

	.text

	.syntax unified

/* void *memset (dstpp, c, len) */

ENTRY(memset)

	mov	r3, r0

	cmp	r2, #8

	bcc	2f		@ less than 8 bytes to move

1:

	tst	r3, #3		@ aligned yet?

	strbne	r1, [r3], #1

	subne	r2, r2, #1

	bne	1b

	and	r1, r1, #255	@ clear any sign bits

	orr	r1, r1, r1, lsl $8

	orr	r1, r1, r1, lsl $16

	mov	ip, r1

1:

	subs	r2, r2, #8

	stmiacs	r3!, {r1, ip}	@ store up to 32 bytes per loop iteration

	subscs	r2, r2, #8

	stmiacs	r3!, {r1, ip}

	subscs	r2, r2, #8

	stmiacs	r3!, {r1, ip}

	subscs	r2, r2, #8

	stmiacs	r3!, {r1, ip}

	bcs	1b

	and	r2, r2, #7

2:

	subs	r2, r2, #1	@ store up to 4 bytes per loop iteration

	strbcs	r1, [r3], #1

	subscs	r2, r2, #1

	strbcs	r1, [r3], #1

	subscs	r2, r2, #1

	strbcs	r1, [r3], #1

	subscs	r2, r2, #1

	strbcs	r1, [r3], #1

	bcs	2b

	DO_RET(lr)

END(memset)

libc_hidden_builtin_def (memset)