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31 lines
957 B
C++
31 lines
957 B
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#include "common/bit_util.h"
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#include "frontend/A64/translate/impl/impl.h"
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namespace Dynarmic::A64 {
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bool TranslatorVisitor::SHL_2(bool Q, Imm<4> immh, Imm<3> immb, Vec Vn, Vec Vd) {
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if (immh == 0b0000) {
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return DecodeError();
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}
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if (immh.Bit<3>() && !Q) {
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return ReservedValue();
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}
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const size_t esize = 8 << Common::HighestSetBit(immh.ZeroExtend());
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const size_t datasize = Q ? 128 : 64;
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const u8 shift_amount = concatenate(immh, immb).ZeroExtend<u8>() - static_cast<u8>(esize);
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const IR::U128 operand = V(datasize, Vn);
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const IR::U128 result = ir.VectorLogicalShiftLeft(esize, operand, shift_amount);
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V(datasize, Vd, result);
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return true;
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}
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} // namespace Dynarmic::A64
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