mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 13:35:07 +07:00
25 lines
494 B
C
25 lines
494 B
C
#include "libgcc.h"
|
|
|
|
DWtype __ashrdi3(DWtype u, word_type b)
|
|
{
|
|
const DWunion uu = {.ll = u};
|
|
const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
|
|
DWunion w;
|
|
|
|
if (b == 0)
|
|
return u;
|
|
|
|
if (bm <= 0) {
|
|
/* w.s.high = 1..1 or 0..0 */
|
|
w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1);
|
|
w.s.low = uu.s.high >> -bm;
|
|
} else {
|
|
const UWtype carries = (UWtype) uu.s.high << bm;
|
|
|
|
w.s.high = uu.s.high >> b;
|
|
w.s.low = ((UWtype) uu.s.low >> b) | carries;
|
|
}
|
|
|
|
return w.ll;
|
|
}
|