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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 */4 5#include <linux/export.h>6 7#include <linux/libgcc.h>8 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}34EXPORT_SYMBOL(__ashrdi3);35