mirror of
https://github.com/azahar-emu/dynarmic
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56 lines
1.5 KiB
C++
56 lines
1.5 KiB
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 "frontend/A64/translate/impl/impl.h"
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namespace Dynarmic::A64 {
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bool TranslatorVisitor::MOVN(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
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size_t datasize = sf ? 64 : 32;
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if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
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size_t pos = hw.ZeroExtend<size_t>() << 4;
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u64 value = imm16.ZeroExtend<u64>() << pos;
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value = ~value;
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auto result = I(datasize, value);
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X(datasize, Rd, result);
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return true;
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}
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bool TranslatorVisitor::MOVZ(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
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size_t datasize = sf ? 64 : 32;
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if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
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size_t pos = hw.ZeroExtend<size_t>() << 4;
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u64 value = imm16.ZeroExtend<u64>() << pos;
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auto result = I(datasize, value);
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X(datasize, Rd, result);
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return true;
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}
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bool TranslatorVisitor::MOVK(bool sf, Imm<2> hw, Imm<16> imm16, Reg Rd) {
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size_t datasize = sf ? 64 : 32;
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if (!sf && hw.Bit<1>()) return UnallocatedEncoding();
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size_t pos = hw.ZeroExtend<size_t>() << 4;
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auto result = X(datasize, Rd);
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u64 mask = u64(0xFFFF) << pos;
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u64 value = imm16.ZeroExtend<u64>() << pos;
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result = ir.And(result, I(datasize, ~mask));
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result = ir.Or(result, I(datasize, value));
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X(datasize, Rd, result);
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return true;
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}
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} // namespace Dynarmic::A64
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