1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 
 
 
 
 
 
 
 
 
 
 
 
 
 3 */
 4
 5#include <linux/export.h>
 6
 7#include <linux/libgcc.h>
 8
 9long long notrace __ashrdi3(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 = 1..1 or 0..0 */
22		w.s.high =
23		    uu.s.high >> 31;
24		w.s.low = uu.s.high >> -bm;
25	} else {
26		const unsigned int carries = (unsigned int) uu.s.high << bm;
27
28		w.s.high = uu.s.high >> b;
29		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
30	}
31
32	return w.ll;
33}
34EXPORT_SYMBOL(__ashrdi3);

 
 1/*
 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
19#include <linux/libgcc.h>
20
21long long notrace __ashrdi3(long long u, word_type b)
22{
23	DWunion uu, w;
24	word_type bm;
25
26	if (b == 0)
27		return u;
28
29	uu.ll = u;
30	bm = 32 - b;
31
32	if (bm <= 0) {
33		/* w.s.high = 1..1 or 0..0 */
34		w.s.high =
35		    uu.s.high >> 31;
36		w.s.low = uu.s.high >> -bm;
37	} else {
38		const unsigned int carries = (unsigned int) uu.s.high << bm;
39
40		w.s.high = uu.s.high >> b;
41		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
42	}
43
44	return w.ll;
45}
46EXPORT_SYMBOL(__ashrdi3);