ucmpdi2.c

 1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/module.h>
 3#include <linux/libgcc.h>
 4
 5union ull_union {
 6	unsigned long long ull;
 7	struct {
 8		unsigned int high;
 9		unsigned int low;
10	} ui;
11};
12
13word_type __ucmpdi2(unsigned long long a, unsigned long long b)
14{
15	union ull_union au = {.ull = a};
16	union ull_union bu = {.ull = b};
17
18	if (au.ui.high < bu.ui.high)
19		return 0;
20	else if (au.ui.high > bu.ui.high)
21		return 2;
22	if (au.ui.low < bu.ui.low)
23		return 0;
24	else if (au.ui.low > bu.ui.low)
25		return 2;
26	return 1;
27}