Commit | Line | Data |
---|---|---|
a71a29de YS |
1 | #include "libgcc.h" |
2 | ||
3 | DWtype __ashrdi3(DWtype u, word_type b) | |
4 | { | |
5 | const DWunion uu = {.ll = u}; | |
6 | const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; | |
7 | DWunion w; | |
8 | ||
9 | if (b == 0) | |
10 | return u; | |
11 | ||
12 | if (bm <= 0) { | |
13 | /* w.s.high = 1..1 or 0..0 */ | |
14 | w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1); | |
15 | w.s.low = uu.s.high >> -bm; | |
16 | } else { | |
17 | const UWtype carries = (UWtype) uu.s.high << bm; | |
18 | ||
19 | w.s.high = uu.s.high >> b; | |
20 | w.s.low = ((UWtype) uu.s.low >> b) | carries; | |
21 | } | |
22 | ||
23 | return w.ll; | |
24 | } |