blob: c6aa8ea5f4be2fb40e696a44a062d970ea09bef7 [file] [log] [blame]
Yoshinori Satoa71a29d2015-01-28 02:48:15 +09001#include "libgcc.h"
2
3DWtype
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}