| 1 | |
| 2 | |
| 3 |
|
| 4 |
|
| 5 | #include <linux/export.h>
|
| 6 |
|
| 7 | #include <linux/libgcc.h>
|
| 8 |
|
| 9 | long long notrace __ashrdi3(long long u, word_type b)
|
| 10 | {
|
| 11 | DWunion uu, w;
|
| 12 | word_type bm;
|
| 13 |
|
| 14 | if (b == 0)
|
| 15 | return u;
|
| 16 |
|
| 17 | uu.ll = u;
|
| 18 | bm = 32 - b;
|
| 19 |
|
| 20 | if (bm <= 0) {
|
| 21 |
|
| 22 | w.s.high =
|
| 23 | uu.s.high >> 31;
|
| 24 | w.s.low = uu.s.high >> -bm;
|
| 25 | } else {
|
| 26 | const unsigned int carries = (unsigned int) uu.s.high << bm;
|
| 27 |
|
| 28 | w.s.high = uu.s.high >> b;
|
| 29 | w.s.low = ((unsigned int) uu.s.low >> b) | carries;
|
| 30 | }
|
| 31 |
|
| 32 | return w.ll;
|
| 33 | }
|
| 34 | EXPORT_SYMBOL(__ashrdi3);
|