1/*
2 * Copyright 2004-2009 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2 or later.
5 */
6
7#include "gcclib.h"
8
9#ifdef CONFIG_ARITHMETIC_OPS_L1
10DItype __ashrdi3(DItype u, word_type b)__attribute__((l1_text));
11#endif
12
13DItype __ashrdi3(DItype u, word_type b)
14{
15	DIunion w;
16	word_type bm;
17	DIunion uu;
18
19	if (b == 0)
20		return u;
21
22	uu.ll = u;
23
24	bm = (sizeof(SItype) * BITS_PER_UNIT) - b;
25	if (bm <= 0) {
26		/* w.s.high = 1..1 or 0..0 */
27		w.s.high = uu.s.high >> (sizeof(SItype) * BITS_PER_UNIT - 1);
28		w.s.low = uu.s.high >> -bm;
29	} else {
30		USItype carries = (USItype) uu.s.high << bm;
31		w.s.high = uu.s.high >> b;
32		w.s.low = ((USItype) uu.s.low >> b) | carries;
33	}
34
35	return w.ll;
36}
37