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