1 // SPDX-License-Identifier: GPL-2.0
2 #include "libgcc.h"
3 
__ashrdi3(DWtype u,word_type b)4 DWtype __ashrdi3(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.high = 1..1 or 0..0 */
15 		w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1);
16 		w.s.low = uu.s.high >> -bm;
17 	} else {
18 		const UWtype carries = (UWtype) uu.s.high << bm;
19 
20 		w.s.high = uu.s.high >> b;
21 		w.s.low = ((UWtype) uu.s.low >> b) | carries;
22 	}
23 
24 	return w.ll;
25 }
26