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kernel/linux-rt-4.4.41/arch/score/lib/ucmpdi2.c 1.25 KB
5113f6f70   김현기   kernel add
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  /*
   * arch/score/lib/ucmpdi2.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.,
   * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   */
  
  #include <linux/module.h>
  #include "libgcc.h"
  
  word_type __ucmpdi2(unsigned long long a, unsigned long long b)
  {
  	const DWunion au = {.ll = a};
  	const DWunion bu = {.ll = b};
  
  	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
  		return 0;
  	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
  		return 2;
  	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
  		return 0;
  	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
  		return 2;
  	return 1;
  }
  EXPORT_SYMBOL(__ucmpdi2);