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Palmer Dabbeltb35cd982017-05-23 10:28:26 -07001/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, see the file COPYING, or write
14 * to the Free Software Foundation, Inc.
15 */
16
17#include <linux/export.h>
18
Christoph Hellwig4db2b602017-11-22 11:47:28 +010019#include <linux/libgcc.h>
Palmer Dabbeltb35cd982017-05-23 10:28:26 -070020
21word_type notrace __cmpdi2(long long a, long long b)
22{
23 const DWunion au = {
24 .ll = a
25 };
26 const DWunion bu = {
27 .ll = b
28 };
29
30 if (au.s.high < bu.s.high)
31 return 0;
32 else if (au.s.high > bu.s.high)
33 return 2;
34
35 if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
36 return 0;
37 else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
38 return 2;
39
40 return 1;
41}
42EXPORT_SYMBOL(__cmpdi2);