EightBit/LR35902/inc/Disassembler.h

#pragma once

#include <string>
#include <boost/format.hpp>

namespace EightBit {

	class LR35902;

	class Disassembler {
	public:
		Disassembler();

		static std::string state(LR35902& cpu);
		std::string disassemble(LR35902& cpu);

		static std::string flag(uint8_t value, int flag, const std::string& represents);
		static std::string flags(uint8_t value);
		static std::string hex(uint8_t value);
		static std::string hex(uint16_t value);
		static std::string binary(uint8_t value);
		static std::string decimal(uint8_t value);
		static std::string io(uint8_t value);

		static std::string invalid(uint8_t value);

	private:
		enum IoRegister {
			Abbreviated,	// FF00 + dd
			Absolute,		// FFdd
			Register,		// C
			Unused,			// Unused!
		};

		mutable boost::format m_formatter;
		bool m_prefixCB;

		void disassemble(std::ostringstream& output, LR35902& cpu, uint16_t pc);

		void disassembleCB(
			std::ostringstream& output,
			LR35902& cpu,
			uint16_t pc,
			std::string& specification,
			int& dumpCount,
			int x, int y, int z,
			int p, int q);

		void disassembleOther(
			std::ostringstream& output,
			LR35902& cpu,
			uint16_t pc,
			std::string& specification,
			int& dumpCount,
			IoRegister& ioRegister,
			int x, int y, int z,
			int p, int q);

		std::string RP(int rp) const;
		std::string RP2(int rp) const;
		std::string R(int r) const;
		static std::string cc(int flag);
		static std::string alu(int which);
	};
}