| /* |
| * lib/lshrdi3.c |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see the file COPYING, or write |
| * to the Free Software Foundation, Inc. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/libgcc.h> |
| |
| long long notrace __lshrdi3(long long u, word_type b) |
| { |
| DWunion uu, w; |
| word_type bm; |
| |
| if (b == 0) |
| return u; |
| |
| uu.ll = u; |
| bm = 32 - b; |
| |
| if (bm <= 0) { |
| w.s.high = 0; |
| w.s.low = (unsigned int) uu.s.high >> -bm; |
| } else { |
| const unsigned int carries = (unsigned int) uu.s.high << bm; |
| |
| w.s.high = (unsigned int) uu.s.high >> b; |
| w.s.low = ((unsigned int) uu.s.low >> b) | carries; |
| } |
| |
| return w.ll; |
| } |
| EXPORT_SYMBOL(__lshrdi3); |