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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1aad54a9 PM |
2 | #include <linux/module.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 | ||
32 | EXPORT_SYMBOL(__ashrdi3); |