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CLK/InstructionSets/M68k/Implementation/InstructionOperandSize.hpp

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//
// InstructionOperandSize.hpp
// Clock Signal
//
// Created by Thomas Harte on 09/05/2022.
// Copyright © 2022 Thomas Harte. All rights reserved.
//
#ifndef InstructionSets_68k_InstructionOperandSize_hpp
#define InstructionSets_68k_InstructionOperandSize_hpp
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namespace InstructionSet::M68k {
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template <Operation t_operation>
constexpr DataSize operand_size(Operation r_operation) {
switch((t_operation == Operation::Undefined) ? r_operation : t_operation) {
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// These are given a value arbitrarily, to
// complete the switch statement.
case Operation::Undefined:
case Operation::NOP:
case Operation::STOP:
case Operation::RESET:
case Operation::RTE: case Operation::RTR:
case Operation::RTD:
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case Operation::TRAP:
case Operation::TRAPV:
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case Operation::TRAPcc:
case Operation::BKPT:
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case Operation::ABCD: case Operation::SBCD:
case Operation::NBCD:
case Operation::ADDb: case Operation::ADDXb:
case Operation::SUBb: case Operation::SUBXb:
case Operation::MOVEb:
case Operation::MOVESb:
case Operation::MOVEfromCCR:
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case Operation::ORItoCCR:
case Operation::ANDItoCCR:
case Operation::EORItoCCR:
case Operation::BTST: case Operation::BCLR:
case Operation::BCHG: case Operation::BSET:
case Operation::CMPb: case Operation::TSTb:
case Operation::Bccb: case Operation::BSRb:
case Operation::CLRb:
case Operation::Scc:
case Operation::NEGXb: case Operation::NEGb:
case Operation::ASLb: case Operation::ASRb:
case Operation::LSLb: case Operation::LSRb:
case Operation::ROLb: case Operation::RORb:
case Operation::ROXLb: case Operation::ROXRb:
case Operation::ANDb: case Operation::EORb:
case Operation::NOTb: case Operation::ORb:
case Operation::TAS:
return DataSize::Byte;
case Operation::ADDw: case Operation::ADDAw:
case Operation::ADDXw: case Operation::SUBw:
case Operation::SUBAw: case Operation::SUBXw:
case Operation::MOVEw: case Operation::MOVEAw:
case Operation::MOVESw:
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case Operation::ORItoSR:
case Operation::ANDItoSR:
case Operation::EORItoSR:
case Operation::MOVEtoSR:
case Operation::MOVEfromSR:
case Operation::MOVEtoCCR: // TODO: is this true?
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case Operation::CMPw: case Operation::CMPAw:
case Operation::TSTw:
case Operation::DBcc:
case Operation::Bccw: case Operation::BSRw:
case Operation::CLRw:
case Operation::NEGXw: case Operation::NEGw:
case Operation::ASLw: case Operation::ASLm:
case Operation::ASRw: case Operation::ASRm:
case Operation::LSLw: case Operation::LSLm:
case Operation::LSRw: case Operation::LSRm:
case Operation::ROLw: case Operation::ROLm:
case Operation::RORw: case Operation::RORm:
case Operation::ROXLw: case Operation::ROXLm:
case Operation::ROXRw: case Operation::ROXRm:
case Operation::MOVEMtoRw:
case Operation::MOVEMtoRl:
case Operation::MOVEMtoMw:
case Operation::MOVEMtoMl:
case Operation::MOVEPw:
case Operation::ANDw: case Operation::EORw:
case Operation::NOTw: case Operation::ORw:
case Operation::DIVUw: case Operation::DIVSw:
case Operation::MULUw: case Operation::MULSw:
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case Operation::EXTbtow:
case Operation::LINKw:
case Operation::CHKw:
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return DataSize::Word;
case Operation::ADDl: case Operation::ADDAl:
case Operation::ADDXl: case Operation::SUBl:
case Operation::SUBAl: case Operation::SUBXl:
case Operation::MOVEl: case Operation::MOVEAl:
case Operation::MOVESl:
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case Operation::LEA: case Operation::PEA:
case Operation::EXG: case Operation::SWAP:
case Operation::MOVEtoUSP:
case Operation::MOVEfromUSP:
case Operation::MOVEtoC:
case Operation::MOVEfromC:
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case Operation::CMPl: case Operation::CMPAl:
case Operation::TSTl:
case Operation::JMP: case Operation::JSR:
case Operation::RTS:
case Operation::Bccl: case Operation::BSRl:
case Operation::CLRl:
case Operation::NEGXl: case Operation::NEGl:
case Operation::ASLl: case Operation::ASRl:
case Operation::LSLl: case Operation::LSRl:
case Operation::ROLl: case Operation::RORl:
case Operation::ROXLl: case Operation::ROXRl:
case Operation::MOVEPl:
case Operation::ANDl: case Operation::EORl:
case Operation::NOTl: case Operation::ORl:
case Operation::EXTwtol:
case Operation::UNLINK:
return DataSize::LongWord;
default:
// 68020 TODO.
return DataSize::Byte;
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}
}
}
#endif /* InstructionSets_68k_InstructionOperandSize_hpp */