This source file includes following definitions.
- __ashrdi3
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16 #include <linux/compiler.h>
17 #include <linux/export.h>
18
19 #define BITS_PER_UNIT 8
20
21 typedef int SItype __mode(SI);
22 typedef unsigned int USItype __mode(SI);
23 typedef int DItype __mode(DI);
24 typedef int word_type __mode(__word__);
25
26 struct DIstruct {SItype high, low;};
27
28 typedef union
29 {
30 struct DIstruct s;
31 DItype ll;
32 } DIunion;
33
34 DItype
35 __ashrdi3 (DItype u, word_type b)
36 {
37 DIunion w;
38 word_type bm;
39 DIunion uu;
40
41 if (b == 0)
42 return u;
43
44 uu.ll = u;
45
46 bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
47 if (bm <= 0)
48 {
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50 w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
51 w.s.low = uu.s.high >> -bm;
52 }
53 else
54 {
55 USItype carries = (USItype)uu.s.high << bm;
56 w.s.high = uu.s.high >> b;
57 w.s.low = ((USItype)uu.s.low >> b) | carries;
58 }
59
60 return w.ll;
61 }
62 EXPORT_SYMBOL(__ashrdi3);