1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun #include "libgcc.h" 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun DWtype __ashldi3(DWtype u,word_type b)5*4882a593Smuzhiyun__ashldi3(DWtype u, word_type b) 6*4882a593Smuzhiyun { 7*4882a593Smuzhiyun const DWunion uu = {.ll = u}; 8*4882a593Smuzhiyun const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; 9*4882a593Smuzhiyun DWunion w; 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun if (b == 0) 12*4882a593Smuzhiyun return u; 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun if (bm <= 0) { 15*4882a593Smuzhiyun w.s.low = 0; 16*4882a593Smuzhiyun w.s.high = (UWtype) uu.s.low << -bm; 17*4882a593Smuzhiyun } else { 18*4882a593Smuzhiyun const UWtype carries = (UWtype) uu.s.low >> bm; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun w.s.low = (UWtype) uu.s.low << b; 21*4882a593Smuzhiyun w.s.high = ((UWtype) uu.s.high << b) | carries; 22*4882a593Smuzhiyun } 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun return w.ll; 25*4882a593Smuzhiyun } 26