| /* Copyright (C) 1999-2016 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) |