mirror of https://github.com/bsnes-emu/bsnes.git
255 lines
13 KiB
C++
255 lines
13 KiB
C++
#pragma once
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//Motorola M68000
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namespace Processor {
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struct M68K {
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enum : bool { User, Supervisor };
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enum : uint { Byte, Word, Long };
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enum : bool { NoUpdate = 0, Reverse = 1 };
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enum : uint {
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DataRegisterDirect,
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AddressRegisterDirect,
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AddressRegisterIndirect,
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AddressRegisterIndirectWithPostIncrement,
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AddressRegisterIndirectWithPreDecrement,
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AddressRegisterIndirectWithDisplacement,
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AddressRegisterIndirectWithIndex,
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AbsoluteShortIndirect,
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AbsoluteLongIndirect,
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ProgramCounterIndirectWithDisplacement,
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ProgramCounterIndirectWithIndex,
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Immediate,
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};
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M68K();
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virtual auto step(uint clocks) -> void = 0;
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virtual auto read(bool word, uint24 addr) -> uint16 = 0;
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virtual auto write(bool word, uint24 addr, uint16 data) -> void = 0;
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auto power() -> void;
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auto reset() -> void;
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auto supervisor() -> bool;
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//registers.cpp
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struct DataRegister {
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explicit DataRegister(uint number_) : number(number_) {}
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uint3 number;
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};
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template<uint Size = Long> auto read(DataRegister reg) -> uint32;
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template<uint Size = Long> auto write(DataRegister reg, uint32 data) -> void;
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struct AddressRegister {
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explicit AddressRegister(uint number_) : number(number_) {}
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uint3 number;
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};
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template<uint Size = Long> auto read(AddressRegister reg) -> uint32;
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template<uint Size = Long> auto write(AddressRegister reg, uint32 data) -> void;
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auto readCCR() -> uint8;
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auto readSR() -> uint16;
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auto writeCCR(uint8 ccr) -> void;
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auto writeSR(uint16 sr) -> void;
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//memory.cpp
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template<uint Size> auto read(uint32 addr) -> uint32;
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template<uint Size, bool Order = 0> auto write(uint32 addr, uint32 data) -> void;
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template<uint Size = Word> auto readPC() -> uint32;
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template<uint Size> auto pop() -> uint32;
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template<uint Size> auto push(uint32 data) -> void;
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//effective-address.cpp
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struct EffectiveAddress {
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explicit EffectiveAddress(uint mode_, uint reg_) : mode(mode_), reg(reg_) {
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if(mode == 7) mode += reg; //optimization: convert modes {7; 0-4} to {8-11}
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}
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uint4 mode;
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uint3 reg;
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boolean valid;
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uint32 address;
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};
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template<uint Size> auto fetch(EffectiveAddress& ea) -> uint32;
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template<uint Size, bool Update = 1> auto read(EffectiveAddress& ea) -> uint32;
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template<uint Size, bool Update = 1> auto write(EffectiveAddress& ea, uint32 data) -> void;
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template<uint Size> auto flush(EffectiveAddress& ea, uint32 data) -> void;
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//instruction.cpp
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auto trap() -> void;
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auto instruction() -> void;
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//instructions.cpp
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auto testCondition(uint4 condition) -> bool;
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template<uint Size> auto bytes() -> uint;
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template<uint Size> auto bits() -> uint;
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template<uint Size> auto lsb() -> uint32;
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template<uint Size> auto msb() -> uint32;
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template<uint Size> auto mask() -> uint32;
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template<uint Size> auto clip(uint32 data) -> uint32;
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template<uint Size> auto sign(uint32 data) -> int32;
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template<uint Size> auto zero(uint32 result) -> bool;
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template<uint Size> auto negative(uint32 result) -> bool;
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template<uint Size> auto instructionADD(DataRegister dr, uint1 direction, EffectiveAddress ea) -> void;
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template<uint Size> auto instructionANDI(EffectiveAddress ea) -> void;
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auto instructionANDI_TO_CCR() -> void;
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auto instructionANDI_TO_SR() -> void;
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template<uint Size> auto ASL(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionASL(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionASL(DataRegister shift, DataRegister modify) -> void;
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auto instructionASL(EffectiveAddress modify) -> void;
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template<uint Size> auto ASR(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionASR(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionASR(DataRegister shift, DataRegister modify) -> void;
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auto instructionASR(EffectiveAddress modify) -> void;
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auto instructionBCC(uint4 condition, uint8 displacement) -> void;
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template<uint Size> auto instructionBTST(DataRegister dr, EffectiveAddress ea) -> void;
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template<uint Size> auto instructionBTST(EffectiveAddress ea) -> void;
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template<uint Size> auto instructionCLR(EffectiveAddress ea) -> void;
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template<uint Size> auto instructionCMP(DataRegister dr, EffectiveAddress ea) -> void;
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auto instructionDBCC(uint4 condition, DataRegister dr) -> void;
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auto instructionEORI_TO_CCR() -> void;
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auto instructionEORI_TO_SR() -> void;
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auto instructionLEA(AddressRegister ar, EffectiveAddress ea) -> void;
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template<uint Size> auto LSL(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionLSL(uint4 immediate, DataRegister dr) -> void;
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template<uint Size> auto instructionLSL(DataRegister sr, DataRegister dr) -> void;
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auto instructionLSL(EffectiveAddress ea) -> void;
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template<uint Size> auto LSR(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionLSR(uint4 immediate, DataRegister dr) -> void;
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template<uint Size> auto instructionLSR(DataRegister shift, DataRegister dr) -> void;
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auto instructionLSR(EffectiveAddress ea) -> void;
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template<uint Size> auto instructionMOVE(EffectiveAddress to, EffectiveAddress from) -> void;
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template<uint Size> auto instructionMOVEA(AddressRegister ar, EffectiveAddress ea) -> void;
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template<uint Size> auto instructionMOVEM(uint1 direction, EffectiveAddress ea) -> void;
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auto instructionMOVEQ(DataRegister dr, uint8 immediate) -> void;
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auto instructionMOVE_FROM_SR(EffectiveAddress ea) -> void;
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auto instructionMOVE_TO_CCR(EffectiveAddress ea) -> void;
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auto instructionMOVE_TO_SR(EffectiveAddress ea) -> void;
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auto instructionMOVE_USP(uint1 direction, AddressRegister ar) -> void;
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auto instructionNOP() -> void;
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auto instructionORI_TO_CCR() -> void;
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auto instructionORI_TO_SR() -> void;
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template<uint Size> auto ROL(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionROL(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionROL(DataRegister shift, DataRegister modify) -> void;
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auto instructionROL(EffectiveAddress modify) -> void;
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template<uint Size> auto ROR(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionROR(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionROR(DataRegister shift, DataRegister modify) -> void;
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auto instructionROR(EffectiveAddress modify) -> void;
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template<uint Size> auto ROXL(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionROXL(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionROXL(DataRegister shift, DataRegister modify) -> void;
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auto instructionROXL(EffectiveAddress modify) -> void;
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template<uint Size> auto ROXR(uint32 result, uint shift) -> uint32;
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template<uint Size> auto instructionROXR(uint4 shift, DataRegister modify) -> void;
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template<uint Size> auto instructionROXR(DataRegister shift, DataRegister modify) -> void;
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auto instructionROXR(EffectiveAddress modify) -> void;
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auto instructionRTS() -> void;
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template<uint Size> auto instructionSUBQ(uint4 immediate, EffectiveAddress ea) -> void;
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template<uint Size> auto instructionTST(EffectiveAddress ea) -> void;
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//disassembler.cpp
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auto disassemble(uint32 pc) -> string;
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auto disassembleRegisters() -> string;
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struct Registers {
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uint32 d[8];
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uint32 a[8];
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uint32 sp;
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uint32 pc;
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bool c; //carry
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bool v; //overflow
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bool z; //zero
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bool n; //negative
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bool x; //extend
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uint3 i; //interrupt mask
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bool s; //supervisor mode
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bool t; //trace mode
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} r;
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uint16 opcode = 0;
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uint instructionsExecuted = 0;
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function<void ()> instructionTable[65536];
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private:
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//disassembler.cpp
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template<uint Size> auto disassembleADD(DataRegister dr, uint1 direction, EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleANDI(EffectiveAddress ea) -> string;
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auto disassembleANDI_TO_CCR() -> string;
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auto disassembleANDI_TO_SR() -> string;
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template<uint Size> auto disassembleASL(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleASL(DataRegister shift, DataRegister modify) -> string;
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auto disassembleASL(EffectiveAddress modify) -> string;
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template<uint Size> auto disassembleASR(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleASR(DataRegister shift, DataRegister modify) -> string;
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auto disassembleASR(EffectiveAddress modify) -> string;
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auto disassembleBCC(uint4 condition, uint8 displacement) -> string;
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template<uint Size> auto disassembleBTST(DataRegister dr, EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleBTST(EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleCLR(EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleCMP(DataRegister dr, EffectiveAddress ea) -> string;
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auto disassembleDBCC(uint4 condition, DataRegister dr) -> string;
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auto disassembleEORI_TO_CCR() -> string;
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auto disassembleEORI_TO_SR() -> string;
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auto disassembleLEA(AddressRegister ar, EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleLSL(uint4 immediate, DataRegister dr) -> string;
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template<uint Size> auto disassembleLSL(DataRegister sr, DataRegister dr) -> string;
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auto disassembleLSL(EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleLSR(uint4 immediate, DataRegister dr) -> string;
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template<uint Size> auto disassembleLSR(DataRegister shift, DataRegister dr) -> string;
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auto disassembleLSR(EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleMOVE(EffectiveAddress to, EffectiveAddress from) -> string;
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template<uint Size> auto disassembleMOVEA(AddressRegister ar, EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleMOVEM(uint1 direction, EffectiveAddress ea) -> string;
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auto disassembleMOVEQ(DataRegister dr, uint8 immediate) -> string;
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auto disassembleMOVE_FROM_SR(EffectiveAddress ea) -> string;
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auto disassembleMOVE_TO_CCR(EffectiveAddress ea) -> string;
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auto disassembleMOVE_TO_SR(EffectiveAddress ea) -> string;
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auto disassembleMOVE_USP(uint1 direction, AddressRegister ar) -> string;
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auto disassembleNOP() -> string;
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auto disassembleORI_TO_CCR() -> string;
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auto disassembleORI_TO_SR() -> string;
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template<uint Size> auto disassembleROL(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleROL(DataRegister shift, DataRegister modify) -> string;
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auto disassembleROL(EffectiveAddress modify) -> string;
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template<uint Size> auto disassembleROR(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleROR(DataRegister shift, DataRegister modify) -> string;
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auto disassembleROR(EffectiveAddress modify) -> string;
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template<uint Size> auto disassembleROXL(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleROXL(DataRegister shift, DataRegister modify) -> string;
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auto disassembleROXL(EffectiveAddress modify) -> string;
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template<uint Size> auto disassembleROXR(uint4 shift, DataRegister modify) -> string;
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template<uint Size> auto disassembleROXR(DataRegister shift, DataRegister modify) -> string;
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auto disassembleROXR(EffectiveAddress modify) -> string;
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auto disassembleRTS() -> string;
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template<uint Size> auto disassembleSUBQ(uint4 immediate, EffectiveAddress ea) -> string;
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template<uint Size> auto disassembleTST(EffectiveAddress ea) -> string;
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template<uint Size> auto _read(uint32 addr) -> uint32;
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template<uint Size = Word> auto _readPC() -> uint32;
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auto _dataRegister(DataRegister dr) -> string;
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auto _addressRegister(AddressRegister ar) -> string;
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template<uint Size> auto _immediate() -> string;
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template<uint Size> auto _address(EffectiveAddress& ea) -> string;
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template<uint Size> auto _effectiveAddress(EffectiveAddress& ea) -> string;
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auto _branch(uint8 displacement) -> string;
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template<uint Size> auto _suffix() -> string;
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auto _condition(uint4 condition) -> string;
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uint32 _pc;
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function<string ()> disassembleTable[65536];
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};
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}
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