1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/export.h> 3 4 #include "libgcc.h" 5 6 long long __ashrdi3(long long u, word_type b) 7 { 8 DWunion uu, w; 9 word_type bm; 10 11 if (b == 0) 12 return u; 13 14 uu.ll = u; 15 bm = 32 - b; 16 17 if (bm <= 0) { 18 /* w.s.high = 1..1 or 0..0 */ 19 w.s.high = 20 uu.s.high >> 31; 21 w.s.low = uu.s.high >> -bm; 22 } else { 23 const unsigned int carries = (unsigned int) uu.s.high << bm; 24 25 w.s.high = uu.s.high >> b; 26 w.s.low = ((unsigned int) uu.s.low >> b) | carries; 27 } 28 29 return w.ll; 30 } 31 EXPORT_SYMBOL(__ashrdi3); 32