1 // SPDX-License-Identifier: GPL-2.0
2 #include "libgcc.h"
3 
4 DWtype
__ashldi3(DWtype u,word_type b)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 }
26