66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
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/* 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 "common/bit_util.h"
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#include "translate_arm.h"
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namespace Dynarmic {
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namespace Arm {
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bool ArmTranslatorVisitor::arm_B(Cond cond, Imm24 imm24)
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{
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s32 imm32 = Common::SignExtend<26, s32>(imm24 << 2) + 8;
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// B <cond> <label>
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if (ConditionPassed(cond))
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{
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auto new_location = ir.current_location.AdvancePC(imm32);
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ir.SetTerm(IR::Term::LinkBlock{ new_location });
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return false;
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}
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return true;
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}
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bool ArmTranslatorVisitor::arm_BL(Cond cond, Imm24 imm24)
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{
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s32 imm32 = Common::SignExtend<26, s32>(imm24 << 2) + 8;
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// BL <cond> <label>
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if (ConditionPassed(cond))
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{
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ir.SetRegister(Reg::LR, ir.Imm32(ir.current_location.PC() + 4));
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auto new_location = ir.current_location.AdvancePC(imm32);
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ir.SetTerm(IR::Term::LinkBlock{ new_location });
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return false;
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}
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return true;
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}
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bool ArmTranslatorVisitor::arm_BLX_imm(Cond cond, Imm24 imm24)
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{
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return InterpretThisInstruction();
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}
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bool ArmTranslatorVisitor::arm_BLX_reg(Cond cond, Reg m) {
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return InterpretThisInstruction();
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}
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bool ArmTranslatorVisitor::arm_BX(Cond cond, Reg m) {
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// BX <cond> <Rm>
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if (ConditionPassed(cond)) {
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ir.BXWritePC(ir.GetRegister(m));
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ir.SetTerm(IR::Term::ReturnToDispatch{});
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return false;
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}
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return true;
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}
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bool ArmTranslatorVisitor::arm_BXJ(Cond cond, Reg m) {
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return InterpretThisInstruction();
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}
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} // namespace Arm
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} // namespace Dynarmic
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