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63 lines
2.5 KiB
C++
63 lines
2.5 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::CCMN_reg(bool sf, Reg Rm, Cond cond, Reg Rn, Imm<4> nzcv) {
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const size_t datasize = sf ? 64 : 32;
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const u32 flags = nzcv.ZeroExtend<u32>() << 28;
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const IR::U32U64 operand1 = X(datasize, Rn);
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const IR::U32U64 operand2 = X(datasize, Rm);
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const IR::NZCV then_flags = ir.NZCVFrom(ir.AddWithCarry(operand1, operand2, ir.Imm1(0)));
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const IR::NZCV else_flags = ir.NZCVFromPackedFlags(ir.Imm32(flags));
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ir.SetNZCV(ir.ConditionalSelect(cond, then_flags, else_flags));
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return true;
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}
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bool TranslatorVisitor::CCMP_reg(bool sf, Reg Rm, Cond cond, Reg Rn, Imm<4> nzcv) {
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const size_t datasize = sf ? 64 : 32;
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const u32 flags = nzcv.ZeroExtend<u32>() << 28;
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const IR::U32U64 operand1 = X(datasize, Rn);
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const IR::U32U64 operand2 = X(datasize, Rm);
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const IR::NZCV then_flags = ir.NZCVFrom(ir.AddWithCarry(operand1, ir.Not(operand2), ir.Imm1(1)));
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const IR::NZCV else_flags = ir.NZCVFromPackedFlags(ir.Imm32(flags));
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ir.SetNZCV(ir.ConditionalSelect(cond, then_flags, else_flags));
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return true;
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}
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bool TranslatorVisitor::CCMN_imm(bool sf, Imm<5> imm5, Cond cond, Reg Rn, Imm<4> nzcv) {
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const size_t datasize = sf ? 64 : 32;
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const u32 flags = nzcv.ZeroExtend<u32>() << 28;
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const IR::U32U64 operand1 = X(datasize, Rn);
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const IR::U32U64 operand2 = I(datasize, imm5.ZeroExtend<u32>());
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const IR::NZCV then_flags = ir.NZCVFrom(ir.AddWithCarry(operand1, operand2, ir.Imm1(0)));
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const IR::NZCV else_flags = ir.NZCVFromPackedFlags(ir.Imm32(flags));
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ir.SetNZCV(ir.ConditionalSelect(cond, then_flags, else_flags));
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return true;
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}
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bool TranslatorVisitor::CCMP_imm(bool sf, Imm<5> imm5, Cond cond, Reg Rn, Imm<4> nzcv) {
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const size_t datasize = sf ? 64 : 32;
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const u32 flags = nzcv.ZeroExtend<u32>() << 28;
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const IR::U32U64 operand1 = X(datasize, Rn);
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const IR::U32U64 operand2 = I(datasize, imm5.ZeroExtend<u32>());
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const IR::NZCV then_flags = ir.NZCVFrom(ir.AddWithCarry(operand1, ir.Not(operand2), ir.Imm1(1)));
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const IR::NZCV else_flags = ir.NZCVFromPackedFlags(ir.Imm32(flags));
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ir.SetNZCV(ir.ConditionalSelect(cond, then_flags, else_flags));
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return true;
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}
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} // namespace Dynarmic::A64
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