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