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/*
 2 * lib/lshrdi3.c
 3 *
 4 * This program is free software; you can redistribute it and/or modify
 5 * it under the terms of the GNU General Public License as published by
 6 * the Free Software Foundation; either version 2 of the License, or
 7 * (at your option) any later version.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.
17 */
18
19#include <linux/module.h>
20#include <linux/libgcc.h>
21
22long long notrace __lshrdi3(long long u, word_type b)
23{
24	DWunion uu, w;
25	word_type bm;
26
27	if (b == 0)
28		return u;
29
30	uu.ll = u;
31	bm = 32 - b;
32
33	if (bm <= 0) {
34		w.s.high = 0;
35		w.s.low = (unsigned int) uu.s.high >> -bm;
36	} else {
37		const unsigned int carries = (unsigned int) uu.s.high << bm;
38
39		w.s.high = (unsigned int) uu.s.high >> b;
40		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
41	}
42
43	return w.ll;
44}
45EXPORT_SYMBOL(__lshrdi3);