| Phil Edworthy | eeb84df | 2011-06-02 22:15:27 +0000 | [diff] [blame^] | 1 | #include "libgcc.h" |
| 2 | |||||
| 3 | long long __lshrdi3(long long u, word_type b) | ||||
| 4 | { | ||||
| 5 | DWunion uu, w; | ||||
| 6 | word_type bm; | ||||
| 7 | |||||
| 8 | if (b == 0) | ||||
| 9 | return u; | ||||
| 10 | |||||
| 11 | uu.ll = u; | ||||
| 12 | bm = 32 - b; | ||||
| 13 | |||||
| 14 | if (bm <= 0) { | ||||
| 15 | w.s.high = 0; | ||||
| 16 | w.s.low = (unsigned int) uu.s.high >> -bm; | ||||
| 17 | } else { | ||||
| 18 | const unsigned int carries = (unsigned int) uu.s.high << bm; | ||||
| 19 | |||||
| 20 | w.s.high = (unsigned int) uu.s.high >> b; | ||||
| 21 | w.s.low = ((unsigned int) uu.s.low >> b) | carries; | ||||
| 22 | } | ||||
| 23 | |||||
| 24 | return w.ll; | ||||
| 25 | } | ||||