net_sched: sch_hhf: defer skb freeing
[linux/fpc-iii.git] / arch / m68k / lib / ashrdi3.c
blob1d59345f36c631550767bc8f8c77c9e6a69afbc0
1 /* ashrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
2 /* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details. */
16 #define BITS_PER_UNIT 8
18 typedef int SItype __attribute__ ((mode (SI)));
19 typedef unsigned int USItype __attribute__ ((mode (SI)));
20 typedef int DItype __attribute__ ((mode (DI)));
21 typedef int word_type __attribute__ ((mode (__word__)));
23 struct DIstruct {SItype high, low;};
25 typedef union
27 struct DIstruct s;
28 DItype ll;
29 } DIunion;
31 DItype
32 __ashrdi3 (DItype u, word_type b)
34 DIunion w;
35 word_type bm;
36 DIunion uu;
38 if (b == 0)
39 return u;
41 uu.ll = u;
43 bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
44 if (bm <= 0)
46 /* w.s.high = 1..1 or 0..0 */
47 w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
48 w.s.low = uu.s.high >> -bm;
50 else
52 USItype carries = (USItype)uu.s.high << bm;
53 w.s.high = uu.s.high >> b;
54 w.s.low = ((USItype)uu.s.low >> b) | carries;
57 return w.ll;