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36a05131 | 1 | /* Move double-word library function. |
00051260 | 2 | Copyright (C) 2000, 2003 Free Software Foundation, Inc. |
36a05131 BS |
3 | Contributed by Red Hat, Inc. |
4 | ||
7ec022b2 | 5 | This file is part of GCC. |
36a05131 | 6 | |
7ec022b2 | 7 | GCC is free software ; you can redistribute it and/or modify |
36a05131 BS |
8 | it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation * either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
7ec022b2 | 12 | GCC is distributed in the hope that it will be useful, |
36a05131 BS |
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 | You should have received a copy of the GNU General Public License | |
7ec022b2 | 18 | along with GCC; see the file COPYING. If not, write to |
36a05131 BS |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
00051260 JW |
22 | /* As a special exception, if you link this library with other files, |
23 | some of which are compiled with GCC, to produce an executable, | |
24 | this library does not by itself cause the resulting executable | |
25 | to be covered by the GNU General Public License. | |
26 | This exception does not however invalidate any other reasons why | |
27 | the executable file might be covered by the GNU General Public License. */ | |
28 | ||
36a05131 BS |
29 | void |
30 | __cmovd (long long *dest, const long long *src, unsigned len) | |
31 | { | |
32 | unsigned i; | |
33 | unsigned num = len >> 3; | |
34 | unsigned xlen = len & ~7; | |
35 | char *dest_byte = (char *)dest; | |
36 | const char *src_byte = (const char *)src; | |
37 | ||
38 | if (dest_byte < src_byte || dest_byte > src_byte+len) | |
39 | { | |
40 | for (i = 0; i < num; i++) | |
41 | dest[i] = src[i]; | |
42 | ||
43 | while (len > xlen) | |
44 | { | |
45 | dest_byte[xlen] = src_byte[xlen]; | |
46 | xlen++; | |
47 | } | |
48 | } | |
49 | else | |
50 | { | |
51 | while (len-- > 0) | |
52 | dest_byte[len] = src_byte[len]; | |
53 | } | |
54 | } |