/* Copyright (C) 1999-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp>

   Optimized by Toshiyasu Morita <toshiyasu.morita@hsa.hitachi.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/>.  */

#include <sysdep.h>

/* void *memset (t, c, len);  */

ENTRY(memset)

	mov	#12,r0

	cmp/gt	r6,r0

	bt.s	L_byte_loop_init

	mov	r4,r7

	extu.b	r5,r5

	swap.b	r5,r1

	or	r1,r5

	swap.w	r5,r1

	or	r1,r5

	mov	r4,r0

	tst	#1,r0

	bt	L_wordalign

	mov.b	r5,@r4

	add	#-1,r6

	add	#1,r4

	mov	r4,r0

	.balignw 4,0x0009

L_wordalign:

	tst	#2,r0

	bt	L_word_loop_init

	mov.w	r5,@r4

	add	#-2,r6

	add	#2,r4

	mov	r4,r0

	.balignw 4,0x0009

L_word_loop_init:

	mov	r6,r3

	shlr2	r3

	mov	#7,r0

	shlr	r3

	and	r0,r6

	.balignw 4,0x0009

L_2word_loop:

	mov.l	r5,@r4

	dt	r3

	mov.l	r5,@(4,r4)

	bf.s	L_2word_loop

	add	#8,r4

	.balignw 4,0x0009

L_byte_loop_init:

	tst	r6,r6

	bt	L_byte_exit

	.balignw 4,0x0009

L_byte_loop:

	mov.b	r5,@r4

	dt	r6

	bf.s	L_byte_loop

	add	#1,r4

	.balignw 4,0x0009

L_byte_exit:

	rts

	mov	r7,r0

END(memset)

libc_hidden_builtin_def (memset)