39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2016 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 "translate_arm.h"
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namespace Dynarmic::A32 {
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bool ArmTranslatorVisitor::arm_PKHBT(Cond cond, Reg n, Reg d, Imm5 imm5, Reg m) {
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if (n == Reg::PC || d == Reg::PC || m == Reg::PC)
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return UnpredictableInstruction();
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if (ConditionPassed(cond)) {
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auto shifted = EmitImmShift(ir.GetRegister(m), ShiftType::LSL, imm5, ir.Imm1(false)).result;
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auto lower_half = ir.And(ir.GetRegister(n), ir.Imm32(0x0000FFFF));
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auto upper_half = ir.And(shifted, ir.Imm32(0xFFFF0000));
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ir.SetRegister(d, ir.Or(lower_half, upper_half));
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}
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return true;
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}
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bool ArmTranslatorVisitor::arm_PKHTB(Cond cond, Reg n, Reg d, Imm5 imm5, Reg m) {
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if (n == Reg::PC || d == Reg::PC || m == Reg::PC)
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return UnpredictableInstruction();
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if (ConditionPassed(cond)) {
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auto shifted = EmitImmShift(ir.GetRegister(m), ShiftType::ASR, imm5, ir.Imm1(false)).result;
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auto lower_half = ir.And(shifted, ir.Imm32(0x0000FFFF));
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auto upper_half = ir.And(ir.GetRegister(n), ir.Imm32(0xFFFF0000));
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ir.SetRegister(d, ir.Or(lower_half, upper_half));
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}
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return true;
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}
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} // namespace Dynarmic::A32
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