1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 */ 4 5 #include <linux/export.h> 6 7 #include <linux/libgcc.h> 8 __ashrdi3(long long u,word_type b)9long long notrace __ashrdi3(long long u, word_type b) 10 { 11 DWunion uu, w; 12 word_type bm; 13 14 if (b == 0) 15 return u; 16 17 uu.ll = u; 18 bm = 32 - b; 19 20 if (bm <= 0) { 21 /* w.s.high = 1..1 or 0..0 */ 22 w.s.high = 23 uu.s.high >> 31; 24 w.s.low = uu.s.high >> -bm; 25 } else { 26 const unsigned int carries = (unsigned int) uu.s.high << bm; 27 28 w.s.high = uu.s.high >> b; 29 w.s.low = ((unsigned int) uu.s.low >> b) | carries; 30 } 31 32 return w.ll; 33 } 34 EXPORT_SYMBOL(__ashrdi3); 35