1// SPDX-License-Identifier: GPL-2.0 2#include "libgcc.h" 3 4DWtype __lshrdi3(DWtype u, word_type b) 5{ 6 const DWunion uu = {.ll = u}; 7 const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; 8 DWunion w; 9 10 if (b == 0) 11 return u; 12 13 if (bm <= 0) { 14 w.s.high = 0; 15 w.s.low = (UWtype) uu.s.high >> -bm; 16 } else { 17 const UWtype carries = (UWtype) uu.s.high << bm; 18 19 w.s.high = (UWtype) uu.s.high >> b; 20 w.s.low = ((UWtype) uu.s.low >> b) | carries; 21 } 22 23 return w.ll; 24} 25