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8309d49588
These are cases that are defined as reserved within the ARMv8 reference manual, so we can handle them as such instead of as unallocated encodings. While this doesn't actually change emulated behavior, it does at least allow the JIT to generate the more appropriate exception.
29 lines
827 B
C++
29 lines
827 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 "frontend/A64/translate/impl/impl.h"
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namespace Dynarmic::A64 {
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bool TranslatorVisitor::EXT(bool Q, Vec Vm, Imm<4> imm4, Vec Vn, Vec Vd) {
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if (!Q && imm4.Bit<3>()) {
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return ReservedValue();
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}
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const size_t datasize = Q ? 128 : 64;
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const size_t position = imm4.ZeroExtend<size_t>() << 3;
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const IR::U128 lo = V(datasize, Vn);
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const IR::U128 hi = V(datasize, Vm);
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const IR::U128 result = datasize == 64 ? ir.VectorExtractLower(lo, hi, position) : ir.VectorExtract(lo, hi, position);
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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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