arch/score/lib/cmpdi2.c

   1 /*
   2  * arch/score/lib/cmpdi2.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 word_type __cmpdi2(long long a, long long b)
  24 {
  25         const DWunion au = {
  26                 .ll = a
  27         };
  28         const DWunion bu = {
  29                 .ll = b
  30         };
  31
  32         if (au.s.high < bu.s.high)
  33                 return 0;
  34         else if (au.s.high > bu.s.high)
  35                 return 2;
  36
  37         if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
  38                 return 0;
  39         else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
  40                 return 2;
  41
  42         return 1;
  43 }
  44 EXPORT_SYMBOL(__cmpdi2);