1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * lib/lshrdi3.c
 4 */
 5
 6#include <linux/module.h>
 7#include <linux/libgcc.h>
 8
 9long long notrace __lshrdi3(long long u, word_type b)
10{
11	DWunion uu, w;
12	word_type bm;
13
14	if (b == 0)
15		return u;
16
17	uu.ll = u;
18	bm = 32 - b;
19
20	if (bm <= 0) {
21		w.s.high = 0;
22		w.s.low = (unsigned int) uu.s.high >> -bm;
23	} else {
24		const unsigned int carries = (unsigned int) uu.s.high << bm;
25
26		w.s.high = (unsigned int) uu.s.high >> b;
27		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
28	}
29
30	return w.ll;
31}
32EXPORT_SYMBOL(__lshrdi3);

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * lib/lshrdi3.c
 4 */
 5
 6#include <linux/module.h>
 7#include <linux/libgcc.h>
 8
 9long long notrace __lshrdi3(long long u, word_type b)
10{
11	DWunion uu, w;
12	word_type bm;
13
14	if (b == 0)
15		return u;
16
17	uu.ll = u;
18	bm = 32 - b;
19
20	if (bm <= 0) {
21		w.s.high = 0;
22		w.s.low = (unsigned int) uu.s.high >> -bm;
23	} else {
24		const unsigned int carries = (unsigned int) uu.s.high << bm;
25
26		w.s.high = (unsigned int) uu.s.high >> b;
27		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
28	}
29
30	return w.ll;
31}
32EXPORT_SYMBOL(__lshrdi3);