Commit | Line | Data |
---|---|---|
1394f032 | 1 | /* |
96f1050d | 2 | * Copyright 2004-2009 Analog Devices Inc. |
1394f032 | 3 | * |
96f1050d | 4 | * Licensed under the GPL-2 or later. |
1394f032 BW |
5 | */ |
6 | ||
7 | #include "gcclib.h" | |
8 | ||
9 | #ifdef CONFIG_ARITHMETIC_OPS_L1 | |
10 | DItype __ashrdi3(DItype u, word_type b)__attribute__((l1_text)); | |
11 | #endif | |
12 | ||
13 | DItype __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 | } |