arch/score/lib/ucmpdi2.c

   1 /*
   2  * arch/score/lib/ucmpdi2.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 __ucmpdi2(unsigned long long a, unsigned long long b)
  24 {
  25         const DWunion au = {.ll = a};
  26         const DWunion bu = {.ll = b};
  27
  28         if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
  29                 return 0;
  30         else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
  31                 return 2;
  32         if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
  33                 return 0;
  34         else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
  35                 return 2;
  36         return 1;
  37 }
  38 EXPORT_SYMBOL(__ucmpdi2);