// Copyright (C) 2003 Dolphin Project. // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, version 2.0 or later versions. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License 2.0 for more details. // A copy of the GPL 2.0 should have been included with the program. // If not, see http://www.gnu.org/licenses/ // Official SVN repository and contact information can be found at // http://code.google.com/p/dolphin-emu/ #pragma once #include "common/assert.h" #include "common/common_types.h" #include "common/code_block.h" #if defined(ARCHITECTURE_x86_64) && !defined(_ARCH_64) #define _ARCH_64 #endif #ifdef _ARCH_64 #define PTRBITS 64 #else #define PTRBITS 32 #endif namespace Gen { enum X64Reg { EAX = 0, EBX = 3, ECX = 1, EDX = 2, ESI = 6, EDI = 7, EBP = 5, ESP = 4, RAX = 0, RBX = 3, RCX = 1, RDX = 2, RSI = 6, RDI = 7, RBP = 5, RSP = 4, R8 = 8, R9 = 9, R10 = 10,R11 = 11, R12 = 12,R13 = 13,R14 = 14,R15 = 15, AL = 0, BL = 3, CL = 1, DL = 2, SIL = 6, DIL = 7, BPL = 5, SPL = 4, AH = 0x104, BH = 0x107, CH = 0x105, DH = 0x106, AX = 0, BX = 3, CX = 1, DX = 2, SI = 6, DI = 7, BP = 5, SP = 4, XMM0=0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7, XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15, YMM0=0, YMM1, YMM2, YMM3, YMM4, YMM5, YMM6, YMM7, YMM8, YMM9, YMM10, YMM11, YMM12, YMM13, YMM14, YMM15, INVALID_REG = 0xFFFFFFFF }; enum CCFlags { CC_O = 0, CC_NO = 1, CC_B = 2, CC_C = 2, CC_NAE = 2, CC_NB = 3, CC_NC = 3, CC_AE = 3, CC_Z = 4, CC_E = 4, CC_NZ = 5, CC_NE = 5, CC_BE = 6, CC_NA = 6, CC_NBE = 7, CC_A = 7, CC_S = 8, CC_NS = 9, CC_P = 0xA, CC_PE = 0xA, CC_NP = 0xB, CC_PO = 0xB, CC_L = 0xC, CC_NGE = 0xC, CC_NL = 0xD, CC_GE = 0xD, CC_LE = 0xE, CC_NG = 0xE, CC_NLE = 0xF, CC_G = 0xF }; enum { NUMGPRs = 16, NUMXMMs = 16, }; enum { SCALE_NONE = 0, SCALE_1 = 1, SCALE_2 = 2, SCALE_4 = 4, SCALE_8 = 8, SCALE_ATREG = 16, //SCALE_NOBASE_1 is not supported and can be replaced with SCALE_ATREG SCALE_NOBASE_2 = 34, SCALE_NOBASE_4 = 36, SCALE_NOBASE_8 = 40, SCALE_RIP = 0xFF, SCALE_IMM8 = 0xF0, SCALE_IMM16 = 0xF1, SCALE_IMM32 = 0xF2, SCALE_IMM64 = 0xF3, }; enum NormalOp { nrmADD, nrmADC, nrmSUB, nrmSBB, nrmAND, nrmOR , nrmXOR, nrmMOV, nrmTEST, nrmCMP, nrmXCHG, }; enum { CMP_EQ = 0, CMP_LT = 1, CMP_LE = 2, CMP_UNORD = 3, CMP_NEQ = 4, CMP_NLT = 5, CMP_NLE = 6, CMP_ORD = 7, }; enum FloatOp { floatLD = 0, floatST = 2, floatSTP = 3, floatLD80 = 5, floatSTP80 = 7, floatINVALID = -1, }; enum FloatRound { FROUND_NEAREST = 0, FROUND_FLOOR = 1, FROUND_CEIL = 2, FROUND_ZERO = 3, FROUND_MXCSR = 4, FROUND_RAISE_PRECISION = 0, FROUND_IGNORE_PRECISION = 8, }; class XEmitter; // RIP addressing does not benefit from micro op fusion on Core arch struct OpArg { OpArg() {} // dummy op arg, used for storage OpArg(u64 _offset, int _scale, X64Reg rmReg = RAX, X64Reg scaledReg = RAX) { operandReg = 0; scale = (u8)_scale; offsetOrBaseReg = (u16)rmReg; indexReg = (u16)scaledReg; //if scale == 0 never mind offsetting offset = _offset; } bool operator==(const OpArg &b) const { return operandReg == b.operandReg && scale == b.scale && offsetOrBaseReg == b.offsetOrBaseReg && indexReg == b.indexReg && offset == b.offset; } void WriteRex(XEmitter *emit, int opBits, int bits, int customOp = -1) const; void WriteVex(XEmitter* emit, X64Reg regOp1, X64Reg regOp2, int L, int pp, int mmmmm, int W = 0) const; void WriteRest(XEmitter *emit, int extraBytes=0, X64Reg operandReg=INVALID_REG, bool warn_64bit_offset = true) const; void WriteFloatModRM(XEmitter *emit, FloatOp op); void WriteSingleByteOp(XEmitter *emit, u8 op, X64Reg operandReg, int bits); // This one is public - must be written to u64 offset; // use RIP-relative as much as possible - 64-bit immediates are not available. u16 operandReg; void WriteNormalOp(XEmitter *emit, bool toRM, NormalOp op, const OpArg &operand, int bits) const; bool IsImm() const {return scale == SCALE_IMM8 || scale == SCALE_IMM16 || scale == SCALE_IMM32 || scale == SCALE_IMM64;} bool IsSimpleReg() const {return scale == SCALE_NONE;} bool IsSimpleReg(X64Reg reg) const { if (!IsSimpleReg()) return false; return GetSimpleReg() == reg; } bool CanDoOpWith(const OpArg &other) const { if (IsSimpleReg()) return true; if (!IsSimpleReg() && !other.IsSimpleReg() && !other.IsImm()) return false; return true; } int GetImmBits() const { switch (scale) { case SCALE_IMM8: return 8; case SCALE_IMM16: return 16; case SCALE_IMM32: return 32; case SCALE_IMM64: return 64; default: return -1; } } void SetImmBits(int bits) { switch (bits) { case 8: scale = SCALE_IMM8; break; case 16: scale = SCALE_IMM16; break; case 32: scale = SCALE_IMM32; break; case 64: scale = SCALE_IMM64; break; } } X64Reg GetSimpleReg() const { if (scale == SCALE_NONE) return (X64Reg)offsetOrBaseReg; else return INVALID_REG; } u32 GetImmValue() const { return (u32)offset; } // For loops. void IncreaseOffset(int sz) { offset += sz; } private: u8 scale; u16 offsetOrBaseReg; u16 indexReg; }; inline OpArg M(const void *ptr) {return OpArg((u64)ptr, (int)SCALE_RIP);} template inline OpArg M(const T *ptr) {return OpArg((u64)(const void *)ptr, (int)SCALE_RIP);} inline OpArg R(X64Reg value) {return OpArg(0, SCALE_NONE, value);} inline OpArg MatR(X64Reg value) {return OpArg(0, SCALE_ATREG, value);} inline OpArg MDisp(X64Reg value, int offset) { return OpArg((u32)offset, SCALE_ATREG, value); } inline OpArg MComplex(X64Reg base, X64Reg scaled, int scale, int offset) { return OpArg(offset, scale, base, scaled); } inline OpArg MScaled(X64Reg scaled, int scale, int offset) { if (scale == SCALE_1) return OpArg(offset, SCALE_ATREG, scaled); else return OpArg(offset, scale | 0x20, RAX, scaled); } inline OpArg MRegSum(X64Reg base, X64Reg offset) { return MComplex(base, offset, 1, 0); } inline OpArg Imm8 (u8 imm) {return OpArg(imm, SCALE_IMM8);} inline OpArg Imm16(u16 imm) {return OpArg(imm, SCALE_IMM16);} //rarely used inline OpArg Imm32(u32 imm) {return OpArg(imm, SCALE_IMM32);} inline OpArg Imm64(u64 imm) {return OpArg(imm, SCALE_IMM64);} inline OpArg UImmAuto(u32 imm) { return OpArg(imm, imm >= 128 ? SCALE_IMM32 : SCALE_IMM8); } inline OpArg SImmAuto(s32 imm) { return OpArg(imm, (imm >= 128 || imm < -128) ? SCALE_IMM32 : SCALE_IMM8); } #ifdef _ARCH_64 inline OpArg ImmPtr(const void* imm) {return Imm64((u64)imm);} #else inline OpArg ImmPtr(const void* imm) {return Imm32((u32)imm);} #endif inline u32 PtrOffset(const void* ptr, const void* base) { #ifdef _ARCH_64 s64 distance = (s64)ptr-(s64)base; if (distance >= 0x80000000LL || distance < -0x80000000LL) { ASSERT_MSG(0, "pointer offset out of range"); return 0; } return (u32)distance; #else return (u32)ptr-(u32)base; #endif } //usage: int a[]; ARRAY_OFFSET(a,10) #define ARRAY_OFFSET(array,index) ((u32)((u64)&(array)[index]-(u64)&(array)[0])) //usage: struct {int e;} s; STRUCT_OFFSET(s,e) #define STRUCT_OFFSET(str,elem) ((u32)((u64)&(str).elem-(u64)&(str))) struct FixupBranch { u8 *ptr; int type; //0 = 8bit 1 = 32bit }; enum SSECompare { EQ = 0, LT, LE, UNORD, NEQ, NLT, NLE, ORD, }; typedef const u8* JumpTarget; class XEmitter { friend struct OpArg; // for Write8 etc private: u8 *code; bool flags_locked; void CheckFlags(); void Rex(int w, int r, int x, int b); void WriteSimple1Byte(int bits, u8 byte, X64Reg reg); void WriteSimple2Byte(int bits, u8 byte1, u8 byte2, X64Reg reg); void WriteMulDivType(int bits, OpArg src, int ext); void WriteBitSearchType(int bits, X64Reg dest, OpArg src, u8 byte2, bool rep = false); void WriteShift(int bits, OpArg dest, const OpArg& shift, int ext); void WriteBitTest(int bits, const OpArg& dest, const OpArg& index, int ext); void WriteMXCSR(OpArg arg, int ext); void WriteSSEOp(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes = 0); void WriteSSSE3Op(u8 opPrefix, u16 op, X64Reg regOp, const OpArg& arg, int extrabytes = 0); void WriteSSE41Op(u8 opPrefix, u16 op, X64Reg regOp, const OpArg& arg, int extrabytes = 0); void WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp, const OpArg& arg, int extrabytes = 0); void WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes = 0); void WriteVEXOp(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes = 0); void WriteBMI1Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes = 0); void WriteBMI2Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, const OpArg& arg, int extrabytes = 0); void WriteFloatLoadStore(int bits, FloatOp op, FloatOp op_80b, const OpArg& arg); void WriteNormalOp(XEmitter *emit, int bits, NormalOp op, const OpArg& a1, const OpArg& a2); void ABI_CalculateFrameSize(u32 mask, size_t rsp_alignment, size_t needed_frame_size, size_t* shadowp, size_t* subtractionp, size_t* xmm_offsetp); protected: void Write8(u8 value) {*code++ = value;} void Write16(u16 value) {*(u16*)code = (value); code += 2;} void Write32(u32 value) {*(u32*)code = (value); code += 4;} void Write64(u64 value) {*(u64*)code = (value); code += 8;} public: XEmitter() { code = nullptr; flags_locked = false; } XEmitter(u8 *code_ptr) { code = code_ptr; flags_locked = false; } virtual ~XEmitter() {} void WriteModRM(int mod, int rm, int reg); void WriteSIB(int scale, int index, int base); void SetCodePtr(u8 *ptr); void ReserveCodeSpace(int bytes); const u8 *AlignCode4(); const u8 *AlignCode16(); const u8 *AlignCodePage(); const u8 *GetCodePtr() const; u8 *GetWritableCodePtr(); void LockFlags() { flags_locked = true; } void UnlockFlags() { flags_locked = false; } // Looking for one of these? It's BANNED!! Some instructions are slow on modern CPU // INC, DEC, LOOP, LOOPNE, LOOPE, ENTER, LEAVE, XCHG, XLAT, REP MOVSB/MOVSD, REP SCASD + other string instr., // INC and DEC are slow on Intel Core, but not on AMD. They create a // false flag dependency because they only update a subset of the flags. // XCHG is SLOW and should be avoided. // Debug breakpoint void INT3(); // Do nothing void NOP(size_t count = 1); // Save energy in wait-loops on P4 only. Probably not too useful. void PAUSE(); // Flag control void STC(); void CLC(); void CMC(); // These two can not be executed in 64-bit mode on early Intel 64-bit CPU:s, only on Core2 and AMD! void LAHF(); // 3 cycle vector path void SAHF(); // direct path fast // Stack control void PUSH(X64Reg reg); void POP(X64Reg reg); void PUSH(int bits, const OpArg& reg); void POP(int bits, const OpArg& reg); void PUSHF(); void POPF(); // Flow control void RET(); void RET_FAST(); void UD2(); FixupBranch J(bool force5bytes = false); void JMP(const u8* addr, bool force5Bytes = false); void JMP(OpArg arg); void JMPptr(const OpArg& arg); void JMPself(); //infinite loop! #ifdef CALL #undef CALL #endif void CALL(const void* fnptr); void CALLptr(OpArg arg); FixupBranch J_CC(CCFlags conditionCode, bool force5bytes = false); //void J_CC(CCFlags conditionCode, JumpTarget target); void J_CC(CCFlags conditionCode, const u8* addr, bool force5Bytes = false); void SetJumpTarget(const FixupBranch& branch); void SETcc(CCFlags flag, OpArg dest); // Note: CMOV brings small if any benefit on current cpus. void CMOVcc(int bits, X64Reg dest, OpArg src, CCFlags flag); // Fences void LFENCE(); void MFENCE(); void SFENCE(); // Bit scan void BSF(int bits, X64Reg dest, const OpArg& src); // Bottom bit to top bit void BSR(int bits, X64Reg dest, const OpArg& src); // Top bit to bottom bit // Cache control enum PrefetchLevel { PF_NTA, //Non-temporal (data used once and only once) PF_T0, //All cache levels PF_T1, //Levels 2+ (aliased to T0 on AMD) PF_T2, //Levels 3+ (aliased to T0 on AMD) }; void PREFETCH(PrefetchLevel level, OpArg arg); void MOVNTI(int bits, const OpArg& dest, X64Reg src); void MOVNTDQ(const OpArg& arg, X64Reg regOp); void MOVNTPS(const OpArg& arg, X64Reg regOp); void MOVNTPD(const OpArg& arg, X64Reg regOp); // Multiplication / division void MUL(int bits, const OpArg& src); //UNSIGNED void IMUL(int bits, const OpArg& src); //SIGNED void IMUL(int bits, X64Reg regOp, const OpArg& src); void IMUL(int bits, X64Reg regOp, const OpArg& src, const OpArg& imm); void DIV(int bits, const OpArg& src); void IDIV(int bits, const OpArg& src); // Shift void ROL(int bits, const OpArg& dest, const OpArg& shift); void ROR(int bits, const OpArg& dest, const OpArg& shift); void RCL(int bits, const OpArg& dest, const OpArg& shift); void RCR(int bits, const OpArg& dest, const OpArg& shift); void SHL(int bits, const OpArg& dest, const OpArg& shift); void SHR(int bits, const OpArg& dest, const OpArg& shift); void SAR(int bits, const OpArg& dest, const OpArg& shift); // Bit Test void BT(int bits, const OpArg& dest, const OpArg& index); void BTS(int bits, const OpArg& dest, const OpArg& index); void BTR(int bits, const OpArg& dest, const OpArg& index); void BTC(int bits, const OpArg& dest, const OpArg& index); // Double-Precision Shift void SHRD(int bits, const OpArg& dest, const OpArg& src, const OpArg& shift); void SHLD(int bits, const OpArg& dest, const OpArg& src, const OpArg& shift); // Extend EAX into EDX in various ways void CWD(int bits = 16); void CDQ() {CWD(32);} void CQO() {CWD(64);} void CBW(int bits = 8); void CWDE() {CBW(16);} void CDQE() {CBW(32);} // Load effective address void LEA(int bits, X64Reg dest, OpArg src); // Integer arithmetic void NEG(int bits, const OpArg& src); void ADD(int bits, const OpArg& a1, const OpArg& a2); void ADC(int bits, const OpArg& a1, const OpArg& a2); void SUB(int bits, const OpArg& a1, const OpArg& a2); void SBB(int bits, const OpArg& a1, const OpArg& a2); void AND(int bits, const OpArg& a1, const OpArg& a2); void CMP(int bits, const OpArg& a1, const OpArg& a2); // Bit operations void NOT (int bits, const OpArg& src); void OR(int bits, const OpArg& a1, const OpArg& a2); void XOR(int bits, const OpArg& a1, const OpArg& a2); void MOV(int bits, const OpArg& a1, const OpArg& a2); void TEST(int bits, const OpArg& a1, const OpArg& a2); // Are these useful at all? Consider removing. void XCHG(int bits, const OpArg& a1, const OpArg& a2); void XCHG_AHAL(); // Byte swapping (32 and 64-bit only). void BSWAP(int bits, X64Reg reg); // Sign/zero extension void MOVSX(int dbits, int sbits, X64Reg dest, OpArg src); //automatically uses MOVSXD if necessary void MOVZX(int dbits, int sbits, X64Reg dest, OpArg src); // Available only on Atom or >= Haswell so far. Test with GetCPUCaps().movbe. void MOVBE(int dbits, const OpArg& dest, const OpArg& src); // Available only on AMD >= Phenom or Intel >= Haswell void LZCNT(int bits, X64Reg dest, const OpArg& src); // Note: this one is actually part of BMI1 void TZCNT(int bits, X64Reg dest, const OpArg& src); // WARNING - These two take 11-13 cycles and are VectorPath! (AMD64) void STMXCSR(const OpArg& memloc); void LDMXCSR(const OpArg& memloc); // Prefixes void LOCK(); void REP(); void REPNE(); void FSOverride(); void GSOverride(); // x87 enum x87StatusWordBits { x87_InvalidOperation = 0x1, x87_DenormalizedOperand = 0x2, x87_DivisionByZero = 0x4, x87_Overflow = 0x8, x87_Underflow = 0x10, x87_Precision = 0x20, x87_StackFault = 0x40, x87_ErrorSummary = 0x80, x87_C0 = 0x100, x87_C1 = 0x200, x87_C2 = 0x400, x87_TopOfStack = 0x2000 | 0x1000 | 0x800, x87_C3 = 0x4000, x87_FPUBusy = 0x8000, }; void FLD(int bits, const OpArg& src); void FST(int bits, const OpArg& dest); void FSTP(int bits, const OpArg& dest); void FNSTSW_AX(); void FWAIT(); // SSE/SSE2: Floating point arithmetic void ADDSS(X64Reg regOp, const OpArg& arg); void ADDSD(X64Reg regOp, const OpArg& arg); void SUBSS(X64Reg regOp, const OpArg& arg); void SUBSD(X64Reg regOp, const OpArg& arg); void MULSS(X64Reg regOp, const OpArg& arg); void MULSD(X64Reg regOp, const OpArg& arg); void DIVSS(X64Reg regOp, const OpArg& arg); void DIVSD(X64Reg regOp, const OpArg& arg); void MINSS(X64Reg regOp, const OpArg& arg); void MINSD(X64Reg regOp, const OpArg& arg); void MAXSS(X64Reg regOp, const OpArg& arg); void MAXSD(X64Reg regOp, const OpArg& arg); void SQRTSS(X64Reg regOp, const OpArg& arg); void SQRTSD(X64Reg regOp, const OpArg& arg); void RSQRTSS(X64Reg regOp, const OpArg& arg); // SSE/SSE2: Floating point bitwise (yes) void CMPSS(X64Reg regOp, const OpArg& arg, u8 compare); void CMPSD(X64Reg regOp, const OpArg& arg, u8 compare); void CMPEQSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_EQ); } void CMPLTSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_LT); } void CMPLESS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_LE); } void CMPUNORDSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_UNORD); } void CMPNEQSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_NEQ); } void CMPNLTSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_NLT); } void CMPORDSS(X64Reg regOp, const OpArg& arg) { CMPSS(regOp, arg, CMP_ORD); } // SSE/SSE2: Floating point packed arithmetic (x4 for float, x2 for double) void ADDPS(X64Reg regOp, const OpArg& arg); void ADDPD(X64Reg regOp, const OpArg& arg); void SUBPS(X64Reg regOp, const OpArg& arg); void SUBPD(X64Reg regOp, const OpArg& arg); void CMPPS(X64Reg regOp, const OpArg& arg, u8 compare); void CMPPD(X64Reg regOp, const OpArg& arg, u8 compare); void MULPS(X64Reg regOp, const OpArg& arg); void MULPD(X64Reg regOp, const OpArg& arg); void DIVPS(X64Reg regOp, const OpArg& arg); void DIVPD(X64Reg regOp, const OpArg& arg); void MINPS(X64Reg regOp, const OpArg& arg); void MINPD(X64Reg regOp, const OpArg& arg); void MAXPS(X64Reg regOp, const OpArg& arg); void MAXPD(X64Reg regOp, const OpArg& arg); void SQRTPS(X64Reg regOp, const OpArg& arg); void SQRTPD(X64Reg regOp, const OpArg& arg); void RCPPS(X64Reg regOp, const OpArg& arg); void RSQRTPS(X64Reg regOp, const OpArg& arg); // SSE/SSE2: Floating point packed bitwise (x4 for float, x2 for double) void ANDPS(X64Reg regOp, const OpArg& arg); void ANDPD(X64Reg regOp, const OpArg& arg); void ANDNPS(X64Reg regOp, const OpArg& arg); void ANDNPD(X64Reg regOp, const OpArg& arg); void ORPS(X64Reg regOp, const OpArg& arg); void ORPD(X64Reg regOp, const OpArg& arg); void XORPS(X64Reg regOp, const OpArg& arg); void XORPD(X64Reg regOp, const OpArg& arg); // SSE/SSE2: Shuffle components. These are tricky - see Intel documentation. void SHUFPS(X64Reg regOp, const OpArg& arg, u8 shuffle); void SHUFPD(X64Reg regOp, const OpArg& arg, u8 shuffle); // SSE/SSE2: Useful alternative to shuffle in some cases. void MOVDDUP(X64Reg regOp, const OpArg& arg); // TODO: Actually implement #if 0 // SSE3: Horizontal operations in SIMD registers. Could be useful for various VFPU things like dot products... void ADDSUBPS(X64Reg dest, const OpArg& src); void ADDSUBPD(X64Reg dest, const OpArg& src); void HADDPD(X64Reg dest, const OpArg& src); void HSUBPS(X64Reg dest, const OpArg& src); void HSUBPD(X64Reg dest, const OpArg& src); // SSE4: Further horizontal operations - dot products. These are weirdly flexible, the arg contains both a read mask and a write "mask". void DPPD(X64Reg dest, const OpArg& src, u8 arg); // These are probably useful for VFPU emulation. void INSERTPS(X64Reg dest, const OpArg& src, u8 arg); void EXTRACTPS(const OpArg& dest, X64Reg src, u8 arg); #endif // SSE3: Horizontal operations in SIMD registers. Very slow! shufps-based code beats it handily on Ivy. void HADDPS(X64Reg dest, const OpArg& src); // SSE4: Further horizontal operations - dot products. These are weirdly flexible, the arg contains both a read mask and a write "mask". void DPPS(X64Reg dest, const OpArg& src, u8 arg); void UNPCKLPS(X64Reg dest, const OpArg& src); void UNPCKHPS(X64Reg dest, const OpArg& src); void UNPCKLPD(X64Reg dest, const OpArg& src); void UNPCKHPD(X64Reg dest, const OpArg& src); // SSE/SSE2: Compares. void COMISS(X64Reg regOp, const OpArg& arg); void COMISD(X64Reg regOp, const OpArg& arg); void UCOMISS(X64Reg regOp, const OpArg& arg); void UCOMISD(X64Reg regOp, const OpArg& arg); // SSE/SSE2: Moves. Use the right data type for your data, in most cases. void MOVAPS(X64Reg regOp, const OpArg& arg); void MOVAPD(X64Reg regOp, const OpArg& arg); void MOVAPS(const OpArg& arg, X64Reg regOp); void MOVAPD(const OpArg& arg, X64Reg regOp); void MOVUPS(X64Reg regOp, const OpArg& arg); void MOVUPD(X64Reg regOp, const OpArg& arg); void MOVUPS(const OpArg& arg, X64Reg regOp); void MOVUPD(const OpArg& arg, X64Reg regOp); void MOVDQA(X64Reg regOp, const OpArg& arg); void MOVDQA(const OpArg& arg, X64Reg regOp); void MOVDQU(X64Reg regOp, const OpArg& arg); void MOVDQU(const OpArg& arg, X64Reg regOp); void MOVSS(X64Reg regOp, const OpArg& arg); void MOVSD(X64Reg regOp, const OpArg& arg); void MOVSS(const OpArg& arg, X64Reg regOp); void MOVSD(const OpArg& arg, X64Reg regOp); void MOVLPS(X64Reg regOp, const OpArg& arg); void MOVLPD(X64Reg regOp, const OpArg& arg); void MOVLPS(const OpArg& arg, X64Reg regOp); void MOVLPD(const OpArg& arg, X64Reg regOp); void MOVHPS(X64Reg regOp, const OpArg& arg); void MOVHPD(X64Reg regOp, const OpArg& arg); void MOVHPS(const OpArg& arg, X64Reg regOp); void MOVHPD(const OpArg& arg, X64Reg regOp); void MOVHLPS(X64Reg regOp1, X64Reg regOp2); void MOVLHPS(X64Reg regOp1, X64Reg regOp2); void MOVD_xmm(X64Reg dest, const OpArg& arg); void MOVQ_xmm(X64Reg dest, OpArg arg); void MOVD_xmm(const OpArg& arg, X64Reg src); void MOVQ_xmm(OpArg arg, X64Reg src); // SSE/SSE2: Generates a mask from the high bits of the components of the packed register in question. void MOVMSKPS(X64Reg dest, const OpArg& arg); void MOVMSKPD(X64Reg dest, const OpArg& arg); // SSE2: Selective byte store, mask in src register. EDI/RDI specifies store address. This is a weird one. void MASKMOVDQU(X64Reg dest, X64Reg src); void LDDQU(X64Reg dest, const OpArg& src); // SSE/SSE2: Data type conversions. void CVTPS2PD(X64Reg dest, const OpArg& src); void CVTPD2PS(X64Reg dest, const OpArg& src); void CVTSS2SD(X64Reg dest, const OpArg& src); void CVTSI2SS(X64Reg dest, const OpArg& src); void CVTSD2SS(X64Reg dest, const OpArg& src); void CVTSI2SD(X64Reg dest, const OpArg& src); void CVTDQ2PD(X64Reg regOp, const OpArg& arg); void CVTPD2DQ(X64Reg regOp, const OpArg& arg); void CVTDQ2PS(X64Reg regOp, const OpArg& arg); void CVTPS2DQ(X64Reg regOp, const OpArg& arg); void CVTTPS2DQ(X64Reg regOp, const OpArg& arg); void CVTTPD2DQ(X64Reg regOp, const OpArg& arg); // Destinations are X64 regs (rax, rbx, ...) for these instructions. void CVTSS2SI(X64Reg xregdest, const OpArg& src); void CVTSD2SI(X64Reg xregdest, const OpArg& src); void CVTTSS2SI(X64Reg xregdest, const OpArg& arg); void CVTTSD2SI(X64Reg xregdest, const OpArg& arg); // SSE2: Packed integer instructions void PACKSSDW(X64Reg dest, const OpArg& arg); void PACKSSWB(X64Reg dest, const OpArg& arg); void PACKUSDW(X64Reg dest, const OpArg& arg); void PACKUSWB(X64Reg dest, const OpArg& arg); void PUNPCKLBW(X64Reg dest, const OpArg &arg); void PUNPCKLWD(X64Reg dest, const OpArg &arg); void PUNPCKLDQ(X64Reg dest, const OpArg &arg); void PUNPCKLQDQ(X64Reg dest, const OpArg &arg); void PTEST(X64Reg dest, const OpArg& arg); void PAND(X64Reg dest, const OpArg& arg); void PANDN(X64Reg dest, const OpArg& arg); void PXOR(X64Reg dest, const OpArg& arg); void POR(X64Reg dest, const OpArg& arg); void PADDB(X64Reg dest, const OpArg& arg); void PADDW(X64Reg dest, const OpArg& arg); void PADDD(X64Reg dest, const OpArg& arg); void PADDQ(X64Reg dest, const OpArg& arg); void PADDSB(X64Reg dest, const OpArg& arg); void PADDSW(X64Reg dest, const OpArg& arg); void PADDUSB(X64Reg dest, const OpArg& arg); void PADDUSW(X64Reg dest, const OpArg& arg); void PSUBB(X64Reg dest, const OpArg& arg); void PSUBW(X64Reg dest, const OpArg& arg); void PSUBD(X64Reg dest, const OpArg& arg); void PSUBQ(X64Reg dest, const OpArg& arg); void PSUBSB(X64Reg dest, const OpArg& arg); void PSUBSW(X64Reg dest, const OpArg& arg); void PSUBUSB(X64Reg dest, const OpArg& arg); void PSUBUSW(X64Reg dest, const OpArg& arg); void PAVGB(X64Reg dest, const OpArg& arg); void PAVGW(X64Reg dest, const OpArg& arg); void PCMPEQB(X64Reg dest, const OpArg& arg); void PCMPEQW(X64Reg dest, const OpArg& arg); void PCMPEQD(X64Reg dest, const OpArg& arg); void PCMPGTB(X64Reg dest, const OpArg& arg); void PCMPGTW(X64Reg dest, const OpArg& arg); void PCMPGTD(X64Reg dest, const OpArg& arg); void PEXTRW(X64Reg dest, const OpArg& arg, u8 subreg); void PINSRW(X64Reg dest, const OpArg& arg, u8 subreg); void PMADDWD(X64Reg dest, const OpArg& arg); void PSADBW(X64Reg dest, const OpArg& arg); void PMAXSW(X64Reg dest, const OpArg& arg); void PMAXUB(X64Reg dest, const OpArg& arg); void PMINSW(X64Reg dest, const OpArg& arg); void PMINUB(X64Reg dest, const OpArg& arg); // SSE4: More MAX/MIN instructions. void PMINSB(X64Reg dest, const OpArg& arg); void PMINSD(X64Reg dest, const OpArg& arg); void PMINUW(X64Reg dest, const OpArg& arg); void PMINUD(X64Reg dest, const OpArg& arg); void PMAXSB(X64Reg dest, const OpArg& arg); void PMAXSD(X64Reg dest, const OpArg& arg); void PMAXUW(X64Reg dest, const OpArg& arg); void PMAXUD(X64Reg dest, const OpArg& arg); void PMOVMSKB(X64Reg dest, const OpArg& arg); void PSHUFD(X64Reg dest, const OpArg& arg, u8 shuffle); void PSHUFB(X64Reg dest, const OpArg& arg); void PSHUFLW(X64Reg dest, const OpArg& arg, u8 shuffle); void PSHUFHW(X64Reg dest, const OpArg& arg, u8 shuffle); void PSRLW(X64Reg reg, int shift); void PSRLD(X64Reg reg, int shift); void PSRLQ(X64Reg reg, int shift); void PSRLQ(X64Reg reg, const OpArg& arg); void PSRLDQ(X64Reg reg, int shift); void PSLLW(X64Reg reg, int shift); void PSLLD(X64Reg reg, int shift); void PSLLQ(X64Reg reg, int shift); void PSLLDQ(X64Reg reg, int shift); void PSRAW(X64Reg reg, int shift); void PSRAD(X64Reg reg, int shift); // SSE4: data type conversions void PMOVSXBW(X64Reg dest, const OpArg& arg); void PMOVSXBD(X64Reg dest, const OpArg& arg); void PMOVSXBQ(X64Reg dest, const OpArg& arg); void PMOVSXWD(X64Reg dest, const OpArg& arg); void PMOVSXWQ(X64Reg dest, const OpArg& arg); void PMOVSXDQ(X64Reg dest, const OpArg& arg); void PMOVZXBW(X64Reg dest, const OpArg& arg); void PMOVZXBD(X64Reg dest, const OpArg& arg); void PMOVZXBQ(X64Reg dest, const OpArg& arg); void PMOVZXWD(X64Reg dest, const OpArg& arg); void PMOVZXWQ(X64Reg dest, const OpArg& arg); void PMOVZXDQ(X64Reg dest, const OpArg& arg); // SSE4: variable blend instructions (xmm0 implicit argument) void PBLENDVB(X64Reg dest, const OpArg& arg); void BLENDVPS(X64Reg dest, const OpArg& arg); void BLENDVPD(X64Reg dest, const OpArg& arg); void BLENDPS(X64Reg dest, const OpArg& arg, u8 blend); void BLENDPD(X64Reg dest, const OpArg& arg, u8 blend); // SSE4: rounding (see FloatRound for mode or use ROUNDNEARSS, etc. helpers.) void ROUNDSS(X64Reg dest, const OpArg& arg, u8 mode); void ROUNDSD(X64Reg dest, const OpArg& arg, u8 mode); void ROUNDPS(X64Reg dest, const OpArg& arg, u8 mode); void ROUNDPD(X64Reg dest, const OpArg& arg, u8 mode); void ROUNDNEARSS(X64Reg dest, const OpArg& arg) { ROUNDSS(dest, arg, FROUND_NEAREST); } void ROUNDFLOORSS(X64Reg dest, const OpArg& arg) { ROUNDSS(dest, arg, FROUND_FLOOR); } void ROUNDCEILSS(X64Reg dest, const OpArg& arg) { ROUNDSS(dest, arg, FROUND_CEIL); } void ROUNDZEROSS(X64Reg dest, const OpArg& arg) { ROUNDSS(dest, arg, FROUND_ZERO); } void ROUNDNEARSD(X64Reg dest, const OpArg& arg) { ROUNDSD(dest, arg, FROUND_NEAREST); } void ROUNDFLOORSD(X64Reg dest, const OpArg& arg) { ROUNDSD(dest, arg, FROUND_FLOOR); } void ROUNDCEILSD(X64Reg dest, const OpArg& arg) { ROUNDSD(dest, arg, FROUND_CEIL); } void ROUNDZEROSD(X64Reg dest, const OpArg& arg) { ROUNDSD(dest, arg, FROUND_ZERO); } void ROUNDNEARPS(X64Reg dest, const OpArg& arg) { ROUNDPS(dest, arg, FROUND_NEAREST); } void ROUNDFLOORPS(X64Reg dest, const OpArg& arg) { ROUNDPS(dest, arg, FROUND_FLOOR); } void ROUNDCEILPS(X64Reg dest, const OpArg& arg) { ROUNDPS(dest, arg, FROUND_CEIL); } void ROUNDZEROPS(X64Reg dest, const OpArg& arg) { ROUNDPS(dest, arg, FROUND_ZERO); } void ROUNDNEARPD(X64Reg dest, const OpArg& arg) { ROUNDPD(dest, arg, FROUND_NEAREST); } void ROUNDFLOORPD(X64Reg dest, const OpArg& arg) { ROUNDPD(dest, arg, FROUND_FLOOR); } void ROUNDCEILPD(X64Reg dest, const OpArg& arg) { ROUNDPD(dest, arg, FROUND_CEIL); } void ROUNDZEROPD(X64Reg dest, const OpArg& arg) { ROUNDPD(dest, arg, FROUND_ZERO); } // AVX void VADDSD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VSUBSD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VMULSD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VDIVSD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VADDPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VSUBPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VMULPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VDIVPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VSQRTSD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VSHUFPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg, u8 shuffle); void VUNPCKLPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VUNPCKHPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VANDPS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VANDPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VANDNPS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VANDNPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VORPS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VORPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VXORPS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VXORPD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VPAND(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VPANDN(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VPOR(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VPXOR(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); // FMA3 void VFMADD132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD132SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD213SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD231SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD132SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD213SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADD231SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB132SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB213SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB231SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB132SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB213SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUB231SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD132SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD213SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD231SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD132SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD213SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMADD231SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB132SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB213SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB231SS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB132SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB213SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFNMSUB231SD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMADDSUB231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD132PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD213PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD231PS(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD132PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD213PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void VFMSUBADD231PD(X64Reg regOp1, X64Reg regOp2, const OpArg& arg); // VEX GPR instructions void SARX(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2); void SHLX(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2); void SHRX(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2); void RORX(int bits, X64Reg regOp, const OpArg& arg, u8 rotate); void PEXT(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void PDEP(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void MULX(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void BZHI(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2); void BLSR(int bits, X64Reg regOp, const OpArg& arg); void BLSMSK(int bits, X64Reg regOp, const OpArg& arg); void BLSI(int bits, X64Reg regOp, const OpArg& arg); void BEXTR(int bits, X64Reg regOp1, const OpArg& arg, X64Reg regOp2); void ANDN(int bits, X64Reg regOp1, X64Reg regOp2, const OpArg& arg); void RDTSC(); // Utility functions // The difference between this and CALL is that this aligns the stack // where appropriate. void ABI_CallFunction(const void* func); template void ABI_CallFunction(T (*func)()) { ABI_CallFunction((const void*)func); } void ABI_CallFunction(const u8* func) { ABI_CallFunction((const void*)func); } void ABI_CallFunctionC16(const void* func, u16 param1); void ABI_CallFunctionCC16(const void* func, u32 param1, u16 param2); // These only support u32 parameters, but that's enough for a lot of uses. // These will destroy the 1 or 2 first "parameter regs". void ABI_CallFunctionC(const void* func, u32 param1); void ABI_CallFunctionCC(const void* func, u32 param1, u32 param2); void ABI_CallFunctionCCC(const void* func, u32 param1, u32 param2, u32 param3); void ABI_CallFunctionCCP(const void* func, u32 param1, u32 param2, void* param3); void ABI_CallFunctionCCCP(const void* func, u32 param1, u32 param2, u32 param3, void* param4); void ABI_CallFunctionP(const void* func, void* param1); void ABI_CallFunctionPA(const void* func, void* param1, const OpArg& arg2); void ABI_CallFunctionPAA(const void* func, void* param1, const OpArg& arg2, const OpArg& arg3); void ABI_CallFunctionPPC(const void* func, void* param1, void* param2, u32 param3); void ABI_CallFunctionAC(const void* func, const OpArg& arg1, u32 param2); void ABI_CallFunctionACC(const void* func, const OpArg& arg1, u32 param2, u32 param3); void ABI_CallFunctionA(const void* func, const OpArg& arg1); void ABI_CallFunctionAA(const void* func, const OpArg& arg1, const OpArg& arg2); // Pass a register as a parameter. void ABI_CallFunctionR(const void* func, X64Reg reg1); void ABI_CallFunctionRR(const void* func, X64Reg reg1, X64Reg reg2); template void ABI_CallFunctionC(Tr (*func)(T1), u32 param1) { ABI_CallFunctionC((const void*)func, param1); } // A function that doesn't have any control over what it will do to regs, // such as the dispatcher, should be surrounded by these. void ABI_PushAllCalleeSavedRegsAndAdjustStack(); void ABI_PopAllCalleeSavedRegsAndAdjustStack(); // A function that doesn't know anything about it's surroundings, should // be surrounded by these to establish a safe environment, where it can roam free. // An example is a backpatch injected function. void ABI_PushAllCallerSavedRegsAndAdjustStack(); void ABI_PopAllCallerSavedRegsAndAdjustStack(); unsigned int ABI_GetAlignedFrameSize(unsigned int frameSize); void ABI_AlignStack(unsigned int frameSize); void ABI_RestoreStack(unsigned int frameSize); // Sets up a __cdecl function. // Only x64 really needs the parameter count. void ABI_EmitPrologue(int maxCallParams); void ABI_EmitEpilogue(int maxCallParams); #ifdef _M_IX86 static int ABI_GetNumXMMRegs() { return 8; } #else static int ABI_GetNumXMMRegs() { return 16; } #endif }; // class XEmitter // Everything that needs to generate X86 code should inherit from this. // You get memory management for free, plus, you can use all the MOV etc functions without // having to prefix them with gen-> or something similar. class XCodeBlock : public CodeBlock { public: void PoisonMemory() override; }; } // namespace