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58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
#pragma once
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#include "stdafx.h"
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#include <unordered_set>
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#include <regex>
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#include "CPU.h"
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class LabelManager;
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struct LineData
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{
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string OpCode;
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string Operand;
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string OperandSuffix;
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AddrMode Mode = AddrMode::None;
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int OperandSize = 0;
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bool IsHex = false;
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bool IsDecimal = false;
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bool IsImmediate = false;
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bool HasComment = false;
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bool HasOpeningParenthesis = false;
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};
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enum AssemblerSpecialCodes
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{
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OK = 0,
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EndOfLine = -1,
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ParsingError = -2,
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OutOfRangeJump = -3,
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LabelRedefinition = -4,
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MissingOperand = -5,
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OperandOutOfRange = -6,
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InvalidHex = -7,
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InvalidSpaces = -8,
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TrailingText = -9,
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UnknownLabel = -10,
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InvalidInstruction = -11,
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InvalidBinaryValue = -12,
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};
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class Assembler
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{
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private:
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std::unordered_map<string, std::unordered_set<int>> _availableModesByOpName;
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bool _needSecondPass;
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shared_ptr<LabelManager> _labelManager;
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void ProcessLine(string code, uint16_t &instructionAddress, vector<int16_t>& output, std::unordered_map<string, uint16_t> &labels, bool firstPass, std::unordered_map<string, uint16_t> ¤tPassLabels);
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AssemblerSpecialCodes GetLineData(std::smatch match, LineData &lineData, std::unordered_map<string, uint16_t> &labels, bool firstPass);
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AssemblerSpecialCodes GetAddrModeAndOperandSize(LineData &lineData, std::unordered_map<string, uint16_t> &labels, bool firstPass);
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void AssembleInstruction(LineData &lineData, uint16_t &instructionAddress, vector<int16_t>& output, bool firstPass);
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bool IsOpModeAvailable(string &opCode, AddrMode mode);
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public:
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Assembler(shared_ptr<LabelManager> labelManager);
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uint32_t AssembleCode(string code, uint16_t startAddress, int16_t* assembledCode);
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}; |