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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a71a29de YS |
2 | #include "libgcc.h" |
3 | ||
4 | DWtype | |
5 | __ashldi3(DWtype u, word_type b) | |
6 | { | |
7 | const DWunion uu = {.ll = u}; | |
8 | const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; | |
9 | DWunion w; | |
10 | ||
11 | if (b == 0) | |
12 | return u; | |
13 | ||
14 | if (bm <= 0) { | |
15 | w.s.low = 0; | |
16 | w.s.high = (UWtype) uu.s.low << -bm; | |
17 | } else { | |
18 | const UWtype carries = (UWtype) uu.s.low >> bm; | |
19 | ||
20 | w.s.low = (UWtype) uu.s.low << b; | |
21 | w.s.high = ((UWtype) uu.s.high << b) | carries; | |
22 | } | |
23 | ||
24 | return w.ll; | |
25 | } |