Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/frv/cmovh.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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-1:000000000000 | 0:a06113de4d67 |
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1 /* Move half-word library function. | |
2 Copyright (C) 2000, 2003, 2009 Free Software Foundation, Inc. | |
3 Contributed by Red Hat, Inc. | |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software ; you can redistribute it and/or modify | |
8 it under the terms of the GNU General Public License as published by | |
9 the Free Software Foundation; either version 3, or (at your option) | |
10 any later version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, | |
13 but WITHOUT ANY WARRANTY ; without even the implied warranty of | |
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 GNU General Public License for more details. | |
16 | |
17 Under Section 7 of GPL version 3, you are granted additional | |
18 permissions described in the GCC Runtime Library Exception, version | |
19 3.1, as published by the Free Software Foundation. | |
20 | |
21 You should have received a copy of the GNU General Public License and | |
22 a copy of the GCC Runtime Library Exception along with this program; | |
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 <http://www.gnu.org/licenses/>. */ | |
25 | |
26 void | |
27 __cmovh (short *dest, const short *src, unsigned len) | |
28 { | |
29 unsigned i; | |
30 unsigned num = len >> 1; | |
31 char *dest_byte = (char *)dest; | |
32 const char *src_byte = (const char *)src; | |
33 | |
34 if (dest_byte < src_byte || dest_byte > src_byte+len) | |
35 { | |
36 for (i = 0; i < num; i++) | |
37 dest[i] = src[i]; | |
38 | |
39 if ((len & 1) != 0) | |
40 dest_byte[len-1] = src_byte[len-1]; | |
41 } | |
42 else | |
43 { | |
44 while (len-- > 0) | |
45 dest_byte[len] = src_byte[len]; | |
46 } | |
47 } |