/* * 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);