diff options
Diffstat (limited to 'REORG.TODO/sysdeps/sh/memset.S')
| -rw-r--r-- | REORG.TODO/sysdeps/sh/memset.S | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sh/memset.S b/REORG.TODO/sysdeps/sh/memset.S new file mode 100644 index 0000000000..cb47e0c709 --- /dev/null +++ b/REORG.TODO/sysdeps/sh/memset.S @@ -0,0 +1,88 @@ +/* Copyright (C) 1999-2017 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) |