// 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); |