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/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
/* void *memset (t, c, len) */
ENTRY(memset)
tst r6, r6
bt/s end
mov r4, r3
mov #3, r0
cmp/hs r6, r0
bt/s 2f
and r4, r0
tst r0, r0
bt/s 1f
add r0, r6
add #-1, r0
shll2 r0
braf r0
add #-4, r6
mov.b r5, @r4
add #1, r4
mov.b r5, @r4
add #1, r4
mov.b r5, @r4
add #1, r4
1:
extu.b r5, r0
shll8 r5
or r5, r0
extu.w r0, r0
mov r0, r5
swap.w r5, r5
or r0, r5
2:
add #-4, r6
cmp/pz r6
bf afew
mov.l r5, @r4
bra 2b
add #4, r4
afew:
mov #-1, r0
sub r6, r0
shll2 r0
braf r0
nop
mov.b r5, @r4
add #1, r4
mov.b r5, @r4
add #1, r4
mov.b r5, @r4
add #1, r4
end:
rts
mov r3, r0
END(memset)
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