ashldi3.c

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    1 /*
    2  * arch/score/lib/ashldi3.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 #include <linux/module.h>
   21 #include "libgcc.h"
   22 
   23 long long __ashldi3(long long u, word_type b)
   24 {
   25         DWunion uu, w;
   26         word_type bm;
   27 
   28         if (b == 0)
   29                 return u;
   30 
   31         uu.ll = u;
   32         bm = 32 - b;
   33 
   34         if (bm <= 0) {
   35                 w.s.low = 0;
   36                 w.s.high = (unsigned int) uu.s.low << -bm;
   37         } else {
   38                 const unsigned int carries = (unsigned int) uu.s.low >> bm;
   39 
   40                 w.s.low = (unsigned int) uu.s.low << b;
   41                 w.s.high = ((unsigned int) uu.s.high << b) | carries;
   42         }
   43 
   44         return w.ll;
   45 }
   46 EXPORT_SYMBOL(__ashldi3);

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FreeBSD/Linux Kernel Cross Reference sys/arch/score/lib/ashldi3.c

FreeBSD/Linux Kernel Cross Reference
sys/arch/score/lib/ashldi3.c