162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci */ 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/export.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#include <linux/libgcc.h> 862306a36Sopenharmony_ci 962306a36Sopenharmony_cilong long notrace __ashldi3(long long u, word_type b) 1062306a36Sopenharmony_ci{ 1162306a36Sopenharmony_ci DWunion uu, w; 1262306a36Sopenharmony_ci word_type bm; 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci if (b == 0) 1562306a36Sopenharmony_ci return u; 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci uu.ll = u; 1862306a36Sopenharmony_ci bm = 32 - b; 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci if (bm <= 0) { 2162306a36Sopenharmony_ci w.s.low = 0; 2262306a36Sopenharmony_ci w.s.high = (unsigned int) uu.s.low << -bm; 2362306a36Sopenharmony_ci } else { 2462306a36Sopenharmony_ci const unsigned int carries = (unsigned int) uu.s.low >> bm; 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci w.s.low = (unsigned int) uu.s.low << b; 2762306a36Sopenharmony_ci w.s.high = ((unsigned int) uu.s.high << b) | carries; 2862306a36Sopenharmony_ci } 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci return w.ll; 3162306a36Sopenharmony_ci} 3262306a36Sopenharmony_ciEXPORT_SYMBOL(__ashldi3); 33