mirror of https://github.com/bsnes-emu/bsnes.git
257 lines
6.6 KiB
C++
257 lines
6.6 KiB
C++
//NEC V30MZ
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#pragma once
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namespace Processor {
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struct V30MZ {
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using Size = uint;
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enum : uint { Byte = 1, Word = 2, Long = 4 };
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virtual auto wait(uint clocks = 1) -> void = 0;
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virtual auto read(uint20 addr) -> uint8 = 0;
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virtual auto write(uint20 addr, uint8 data) -> void = 0;
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virtual auto in(uint16 port) -> uint8 = 0;
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virtual auto out(uint16 port, uint8 data) -> void = 0;
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auto exec() -> void;
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auto instruction() -> void;
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auto interrupt(uint8 vector) -> void;
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auto power() -> void;
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//registers.cpp
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auto segment(uint16) -> uint16;
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auto getAcc(Size) -> uint32;
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auto setAcc(Size, uint32) -> void;
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//modrm.cpp
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auto modRM() -> void;
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auto getMem(Size, uint offset = 0) -> uint16;
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auto setMem(Size, uint16) -> void;
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auto getReg(Size) -> uint16;
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auto setReg(Size, uint16) -> void;
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auto getSeg() -> uint16;
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auto setSeg(uint16) -> void;
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//memory.cpp
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auto read(Size, uint16, uint16) -> uint32;
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auto write(Size, uint16, uint16, uint16) -> void;
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auto in(Size, uint16) -> uint16;
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auto out(Size, uint16, uint16) -> void;
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auto fetch(Size = Byte) -> uint16;
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auto pop() -> uint16;
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auto push(uint16) -> void;
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//algorithms.cpp
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auto parity(uint8) const -> bool;
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auto alAdc(Size, uint16, uint16) -> uint16;
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auto alAdd(Size, uint16, uint16) -> uint16;
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auto alAnd(Size, uint16, uint16) -> uint16;
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auto alDec(Size, uint16 ) -> uint16;
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auto alDiv(Size, uint32, uint32) -> uint32;
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auto alDivi(Size, int32, int32) -> uint32;
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auto alInc(Size, uint16 ) -> uint16;
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auto alMul(Size, uint16, uint16) -> uint32;
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auto alMuli(Size, int16, int16) -> uint32;
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auto alNeg(Size, uint16 ) -> uint16;
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auto alNot(Size, uint16 ) -> uint16;
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auto alOr (Size, uint16, uint16) -> uint16;
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auto alRcl(Size, uint16, uint5 ) -> uint16;
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auto alRcr(Size, uint16, uint5 ) -> uint16;
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auto alRol(Size, uint16, uint4 ) -> uint16;
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auto alRor(Size, uint16, uint4 ) -> uint16;
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auto alSal(Size, uint16, uint5 ) -> uint16;
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auto alSar(Size, uint16, uint5 ) -> uint16;
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auto alSbb(Size, uint16, uint16) -> uint16;
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auto alSub(Size, uint16, uint16) -> uint16;
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auto alShl(Size, uint16, uint5 ) -> uint16;
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auto alShr(Size, uint16, uint5 ) -> uint16;
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auto alXor(Size, uint16, uint16) -> uint16;
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//instructions-adjust.cpp
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auto opDecimalAdjust(bool);
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auto opAsciiAdjust(bool);
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auto opAdjustAfterMultiply();
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auto opAdjustAfterDivide();
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//instructions-alu.cpp
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auto opAddMemReg(Size);
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auto opAddRegMem(Size);
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auto opAddAccImm(Size);
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auto opOrMemReg(Size);
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auto opOrRegMem(Size);
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auto opOrAccImm(Size);
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auto opAdcMemReg(Size);
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auto opAdcRegMem(Size);
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auto opAdcAccImm(Size);
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auto opSbbMemReg(Size);
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auto opSbbRegMem(Size);
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auto opSbbAccImm(Size);
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auto opAndMemReg(Size);
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auto opAndRegMem(Size);
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auto opAndAccImm(Size);
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auto opSubMemReg(Size);
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auto opSubRegMem(Size);
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auto opSubAccImm(Size);
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auto opXorMemReg(Size);
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auto opXorRegMem(Size);
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auto opXorAccImm(Size);
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auto opCmpMemReg(Size);
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auto opCmpRegMem(Size);
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auto opCmpAccImm(Size);
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auto opTestMemReg(Size);
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auto opTestAcc(Size);
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auto opMultiplySignedRegMemImm(Size);
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auto opIncReg(uint16_t&);
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auto opDecReg(uint16_t&);
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auto opSignExtendByte();
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auto opSignExtendWord();
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//instructions-exec.cpp
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auto opLoop();
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auto opLoopWhile(bool);
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auto opJumpShort();
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auto opJumpIf(bool);
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auto opJumpNear();
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auto opJumpFar();
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auto opCallNear();
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auto opCallFar();
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auto opReturn();
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auto opReturnImm();
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auto opReturnFar();
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auto opReturnFarImm();
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auto opReturnInt();
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auto opInt3();
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auto opIntImm();
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auto opInto();
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auto opEnter();
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auto opLeave();
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auto opPushReg(uint16_t&);
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auto opPopReg(uint16_t&);
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auto opPushFlags();
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auto opPopFlags();
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auto opPushAll();
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auto opPopAll();
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auto opPushImm(Size);
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auto opPopMem();
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//instructions-flag.cpp
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auto opStoreFlagsAcc();
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auto opLoadAccFlags();
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auto opComplementCarry();
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auto opClearFlag(bool&);
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auto opSetFlag(bool&);
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//instructions-group.cpp
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auto opGroup1MemImm(Size, bool);
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auto opGroup2MemImm(Size, maybe<uint8> = {});
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auto opGroup3MemImm(Size);
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auto opGroup4MemImm(Size);
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//instructions-misc.cpp
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auto opSegment(uint16);
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auto opRepeat(bool);
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auto opLock();
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auto opWait();
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auto opHalt();
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auto opNop();
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auto opIn(Size);
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auto opOut(Size);
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auto opInDX(Size);
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auto opOutDX(Size);
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auto opTranslate();
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auto opBound();
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//instructions-move.cpp
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auto opMoveMemReg(Size);
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auto opMoveRegMem(Size);
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auto opMoveMemSeg();
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auto opMoveSegMem();
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auto opMoveAccMem(Size);
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auto opMoveMemAcc(Size);
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auto opMoveRegImm(uint8_t&);
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auto opMoveRegImm(uint16_t&);
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auto opMoveMemImm(Size);
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auto opExchange(uint16_t&, uint16_t&);
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auto opExchangeMemReg(Size);
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auto opLoadEffectiveAddressRegMem();
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auto opLoadSegmentMem(uint16_t&);
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//instructions-string.cpp
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auto opInString(Size);
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auto opOutString(Size);
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auto opMoveString(Size);
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auto opCompareString(Size);
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auto opStoreString(Size);
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auto opLoadString(Size);
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auto opScanString(Size);
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//disassembler.cpp
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auto disassemble(uint16 cs, uint16 ip, bool registers = true, bool bytes = true) -> string;
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struct State {
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bool halt; //set to true for hlt instruction; blocks execution until next interrupt
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bool poll; //set to false to suppress interrupt polling between CPU instructions
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bool prefix; //set to true for prefix instructions; prevents flushing of Prefix struct
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} state;
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struct Prefix {
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maybe<bool> repeat; //repnz, repz
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maybe<uint16> segment; //cs, es, ss, ds
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} prefix;
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struct ModRM {
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uint2 mod;
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uint3 reg;
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uint3 mem;
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uint16 segment;
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uint16 address;
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} modrm;
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struct Registers {
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union { uint16_t ax; struct { uint8_t order_lsb2(al, ah); }; };
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union { uint16_t cx; struct { uint8_t order_lsb2(cl, ch); }; };
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union { uint16_t dx; struct { uint8_t order_lsb2(dl, dh); }; };
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union { uint16_t bx; struct { uint8_t order_lsb2(bl, bh); }; };
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uint16_t sp;
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uint16_t bp;
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uint16_t si;
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uint16_t di;
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uint16_t es;
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uint16_t cs;
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uint16_t ss;
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uint16_t ds;
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uint16_t ip;
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uint8_t* b[8]{&al, &cl, &dl, &bl, &ah, &ch, &dh, &bh};
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uint16_t* w[8]{&ax, &cx, &dx, &bx, &sp, &bp, &si, &di};
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uint16_t* s[8]{&es, &cs, &ss, &ds, &es, &cs, &ss, &ds};
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struct Flags {
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//registers.cpp
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operator uint16_t() const;
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auto operator=(uint16_t data);
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bool m; //mode
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bool v; //overflow
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bool d; //direction
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bool i; //interrupt
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bool b; //break
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bool s; //sign
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bool z; //zero
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bool h; //half-carry
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bool p; //parity
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bool c; //carry
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} f;
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} r;
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};
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}
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