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/* Copyright (C) 1999-2020 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
<https://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)
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