cmpdi2.c

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/*
 * arch/score/lib/cmpdi2.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 __cmpdi2(long long a, long long b)
{
    const DWunion au = {
        .ll = a
    };
    const DWunion bu = {
        .ll = b
    };

    if (au.s.high < bu.s.high)
        return 0;
    else if (au.s.high > 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(__cmpdi2);