1 | // SPDX-License-Identifier: GPL-2.0 |
---|---|
2 | #include <linux/export.h> |
3 | |
4 | #include "libgcc.h" |
5 | |
6 | long long __ashrdi3(long long u, word_type b) |
7 | { |
8 | DWunion uu, w; |
9 | word_type bm; |
10 | |
11 | if (b == 0) |
12 | return u; |
13 | |
14 | uu.ll = u; |
15 | bm = 32 - b; |
16 | |
17 | if (bm <= 0) { |
18 | /* w.s.high = 1..1 or 0..0 */ |
19 | w.s.high = |
20 | uu.s.high >> 31; |
21 | w.s.low = uu.s.high >> -bm; |
22 | } else { |
23 | const unsigned int carries = (unsigned int) uu.s.high << bm; |
24 | |
25 | w.s.high = uu.s.high >> b; |
26 | w.s.low = ((unsigned int) uu.s.low >> b) | carries; |
27 | } |
28 | |
29 | return w.ll; |
30 | } |
31 | EXPORT_SYMBOL(__ashrdi3); |
32 |