35 строки
565 B
C
35 строки
565 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
*/
|
|
|
|
#include <linux/export.h>
|
|
|
|
#include <linux/libgcc.h>
|
|
|
|
long long notrace __ashrdi3(long long u, word_type b)
|
|
{
|
|
DWunion uu, w;
|
|
word_type bm;
|
|
|
|
if (b == 0)
|
|
return u;
|
|
|
|
uu.ll = u;
|
|
bm = 32 - b;
|
|
|
|
if (bm <= 0) {
|
|
/* w.s.high = 1..1 or 0..0 */
|
|
w.s.high =
|
|
uu.s.high >> 31;
|
|
w.s.low = uu.s.high >> -bm;
|
|
} else {
|
|
const unsigned int carries = (unsigned int) uu.s.high << bm;
|
|
|
|
w.s.high = uu.s.high >> b;
|
|
w.s.low = ((unsigned int) uu.s.low >> b) | carries;
|
|
}
|
|
|
|
return w.ll;
|
|
}
|
|
EXPORT_SYMBOL(__ashrdi3);
|