1 /*
2 * arch/score/lib/lshrdi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21 #include <linux/module.h>
22 #include "libgcc.h"
23
__lshrdi3(long long u,word_type b)24 long long __lshrdi3(long long u, word_type b)
25 {
26 DWunion uu, w;
27 word_type bm;
28
29 if (b == 0)
30 return u;
31
32 uu.ll = u;
33 bm = 32 - b;
34
35 if (bm <= 0) {
36 w.s.high = 0;
37 w.s.low = (unsigned int) uu.s.high >> -bm;
38 } else {
39 const unsigned int carries = (unsigned int) uu.s.high << bm;
40
41 w.s.high = (unsigned int) uu.s.high >> b;
42 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
43 }
44
45 return w.ll;
46 }
47 EXPORT_SYMBOL(__lshrdi3);
48