55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
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#pragma once
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#include "stdafx.h"
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#include "IAssembler.h"
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class LabelManager;
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enum class ParamType
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{
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None,
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Literal,
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Byte,
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Short,
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Address,
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HighAddress,
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RelAddress,
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StackOffset
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};
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struct ParamEntry
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{
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string Param;
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ParamType Type;
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};
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struct OpCodeEntry
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{
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uint16_t OpCode;
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int ParamCount;
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ParamEntry Param1;
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ParamEntry Param2;
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};
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class GbAssembler : public IAssembler
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{
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private:
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unordered_map<string, vector<OpCodeEntry>> _opCodes;
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shared_ptr<LabelManager> _labelManager;
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void InitParamEntry(ParamEntry& entry, string param);
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bool IsRegisterName(string op);
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void InitAssembler();
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int ReadValue(string operand, int min, int max, unordered_map<string, uint16_t>& localLabels, bool firstPass);
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bool IsMatch(ParamEntry& entry, string operand, uint32_t address, unordered_map<string, uint16_t>& localLabels, bool firstPass);
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void PushOp(uint16_t opCode, vector<int16_t>& output, uint32_t& address);
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void PushByte(uint8_t operand, vector<int16_t>& output, uint32_t& address);
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void PushWord(uint16_t operand, vector<int16_t>& output, uint32_t& address);
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void ProcessOperand(ParamEntry& entry, string operand, vector<int16_t>& output, uint32_t& address, unordered_map<string, uint16_t>& localLabels, bool firstPass);
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void RunPass(vector<int16_t>& output, string code, uint32_t address, int16_t* assembledCode, bool firstPass, unordered_map<string, uint16_t>& localLabels);
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public:
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GbAssembler(shared_ptr<LabelManager> labelManager);
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uint32_t AssembleCode(string code, uint32_t startAddress, int16_t* assembledCode);
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};
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