1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun #include "libgcc.h" 3*4882a593Smuzhiyun __ashrdi3(DWtype u,word_type b)4*4882a593SmuzhiyunDWtype __ashrdi3(DWtype u, word_type b) 5*4882a593Smuzhiyun { 6*4882a593Smuzhiyun const DWunion uu = {.ll = u}; 7*4882a593Smuzhiyun const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; 8*4882a593Smuzhiyun DWunion w; 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun if (b == 0) 11*4882a593Smuzhiyun return u; 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun if (bm <= 0) { 14*4882a593Smuzhiyun /* w.s.high = 1..1 or 0..0 */ 15*4882a593Smuzhiyun w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1); 16*4882a593Smuzhiyun w.s.low = uu.s.high >> -bm; 17*4882a593Smuzhiyun } else { 18*4882a593Smuzhiyun const UWtype carries = (UWtype) uu.s.high << bm; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun w.s.high = uu.s.high >> b; 21*4882a593Smuzhiyun w.s.low = ((UWtype) uu.s.low >> b) | carries; 22*4882a593Smuzhiyun } 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun return w.ll; 25*4882a593Smuzhiyun } 26