1 files changed, 1067 insertions, 0 deletions

diff --git a/src/common/x64/emitter.h b/src/common/x64/emitter.h
new file mode 100644
index 000000000..312e9dc19
--- /dev/null
+++ b/src/common/x64/emitter.h
@@ -0,0 +1,1067 @@
+// 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_X64) && !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 <typename T>
+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, OpArg &shift, int ext);
+    void WriteBitTest(int bits, OpArg &dest, 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, OpArg arg, int extrabytes = 0);
+    void WriteSSE41Op(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes = 0);
+    void WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes = 0);
+    void WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes = 0);
+    void WriteVEXOp(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes = 0);
+    void WriteBMI1Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes = 0);
+    void WriteBMI2Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes = 0);
+    void WriteFloatLoadStore(int bits, FloatOp op, FloatOp op_80b, 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:
+    inline void Write8(u8 value)   {*code++ = value;}
+    inline void Write16(u16 value) {*(u16*)code = (value); code += 2;}
+    inline void Write32(u32 value) {*(u32*)code = (value); code += 4;}
+    inline 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, OpArg src); //bottom bit to top bit
+    void BSR(int bits, X64Reg dest, 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, OpArg dest, X64Reg src);
+    void MOVNTDQ(OpArg arg, X64Reg regOp);
+    void MOVNTPS(OpArg arg, X64Reg regOp);
+    void MOVNTPD(OpArg arg, X64Reg regOp);
+
+    // Multiplication / division
+    void MUL(int bits, OpArg src); //UNSIGNED
+    void IMUL(int bits, OpArg src); //SIGNED
+    void IMUL(int bits, X64Reg regOp, OpArg src);
+    void IMUL(int bits, X64Reg regOp, OpArg src, OpArg imm);
+    void DIV(int bits, OpArg src);
+    void IDIV(int bits, OpArg src);
+
+    // Shift
+    void ROL(int bits, OpArg dest, OpArg shift);
+    void ROR(int bits, OpArg dest, OpArg shift);
+    void RCL(int bits, OpArg dest, OpArg shift);
+    void RCR(int bits, OpArg dest, OpArg shift);
+    void SHL(int bits, OpArg dest, OpArg shift);
+    void SHR(int bits, OpArg dest, OpArg shift);
+    void SAR(int bits, OpArg dest, OpArg shift);
+
+    // Bit Test
+    void BT(int bits, OpArg dest, OpArg index);
+    void BTS(int bits, OpArg dest, OpArg index);
+    void BTR(int bits, OpArg dest, OpArg index);
+    void BTC(int bits, OpArg dest, OpArg index);
+
+    // Double-Precision Shift
+    void SHRD(int bits, OpArg dest, OpArg src, OpArg shift);
+    void SHLD(int bits, OpArg dest, OpArg src, OpArg shift);
+
+    // Extend EAX into EDX in various ways
+    void CWD(int bits = 16);
+    inline void CDQ() {CWD(32);}
+    inline void CQO() {CWD(64);}
+    void CBW(int bits = 8);
+    inline void CWDE() {CBW(16);}
+    inline void CDQE() {CBW(32);}
+
+    // Load effective address
+    void LEA(int bits, X64Reg dest, OpArg src);
+
+    // Integer arithmetic
+    void NEG (int bits, 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, 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 cpu_info.bMOVBE.
+    void MOVBE(int dbits, const OpArg& dest, const OpArg& src);
+
+    // Available only on AMD >= Phenom or Intel >= Haswell
+    void LZCNT(int bits, X64Reg dest, OpArg src);
+    // Note: this one is actually part of BMI1
+    void TZCNT(int bits, X64Reg dest, OpArg src);
+
+    // WARNING - These two take 11-13 cycles and are VectorPath! (AMD64)
+    void STMXCSR(OpArg memloc);
+    void LDMXCSR(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, OpArg src);
+    void FST(int bits, OpArg dest);
+    void FSTP(int bits, OpArg dest);
+    void FNSTSW_AX();
+    void FWAIT();
+
+    // SSE/SSE2: Floating point arithmetic
+    void ADDSS(X64Reg regOp, OpArg arg);
+    void ADDSD(X64Reg regOp, OpArg arg);
+    void SUBSS(X64Reg regOp, OpArg arg);
+    void SUBSD(X64Reg regOp, OpArg arg);
+    void MULSS(X64Reg regOp, OpArg arg);
+    void MULSD(X64Reg regOp, OpArg arg);
+    void DIVSS(X64Reg regOp, OpArg arg);
+    void DIVSD(X64Reg regOp, OpArg arg);
+    void MINSS(X64Reg regOp, OpArg arg);
+    void MINSD(X64Reg regOp, OpArg arg);
+    void MAXSS(X64Reg regOp, OpArg arg);
+    void MAXSD(X64Reg regOp, OpArg arg);
+    void SQRTSS(X64Reg regOp, OpArg arg);
+    void SQRTSD(X64Reg regOp, OpArg arg);
+    void RSQRTSS(X64Reg regOp, OpArg arg);
+
+    // SSE/SSE2: Floating point bitwise (yes)
+    void CMPSS(X64Reg regOp, OpArg arg, u8 compare);
+    void CMPSD(X64Reg regOp, OpArg arg, u8 compare);
+
+    inline void CMPEQSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_EQ); }
+    inline void CMPLTSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_LT); }
+    inline void CMPLESS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_LE); }
+    inline void CMPUNORDSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_UNORD); }
+    inline void CMPNEQSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_NEQ); }
+    inline void CMPNLTSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_NLT); }
+    inline void CMPORDSS(X64Reg regOp, OpArg arg) { CMPSS(regOp, arg, CMP_ORD); }
+
+    // SSE/SSE2: Floating point packed arithmetic (x4 for float, x2 for double)
+    void ADDPS(X64Reg regOp, OpArg arg);
+    void ADDPD(X64Reg regOp, OpArg arg);
+    void SUBPS(X64Reg regOp, OpArg arg);
+    void SUBPD(X64Reg regOp, OpArg arg);
+    void CMPPS(X64Reg regOp, OpArg arg, u8 compare);
+    void CMPPD(X64Reg regOp, OpArg arg, u8 compare);
+    void MULPS(X64Reg regOp, OpArg arg);
+    void MULPD(X64Reg regOp, OpArg arg);
+    void DIVPS(X64Reg regOp, OpArg arg);
+    void DIVPD(X64Reg regOp, OpArg arg);
+    void MINPS(X64Reg regOp, OpArg arg);
+    void MINPD(X64Reg regOp, OpArg arg);
+    void MAXPS(X64Reg regOp, OpArg arg);
+    void MAXPD(X64Reg regOp, OpArg arg);
+    void SQRTPS(X64Reg regOp, OpArg arg);
+    void SQRTPD(X64Reg regOp, OpArg arg);
+    void RCPPS(X64Reg regOp, OpArg arg);
+    void RSQRTPS(X64Reg regOp, OpArg arg);
+
+    // SSE/SSE2: Floating point packed bitwise (x4 for float, x2 for double)
+    void ANDPS(X64Reg regOp, OpArg arg);
+    void ANDPD(X64Reg regOp, OpArg arg);
+    void ANDNPS(X64Reg regOp, OpArg arg);
+    void ANDNPD(X64Reg regOp, OpArg arg);
+    void ORPS(X64Reg regOp, OpArg arg);
+    void ORPD(X64Reg regOp, OpArg arg);
+    void XORPS(X64Reg regOp, OpArg arg);
+    void XORPD(X64Reg regOp, OpArg arg);
+
+    // SSE/SSE2: Shuffle components. These are tricky - see Intel documentation.
+    void SHUFPS(X64Reg regOp, OpArg arg, u8 shuffle);
+    void SHUFPD(X64Reg regOp, OpArg arg, u8 shuffle);
+
+    // SSE/SSE2: Useful alternative to shuffle in some cases.
+    void MOVDDUP(X64Reg regOp, 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, OpArg src);
+    void ADDSUBPD(X64Reg dest, OpArg src);
+    void HADDPD(X64Reg dest, OpArg src);
+    void HSUBPS(X64Reg dest, OpArg src);
+    void HSUBPD(X64Reg dest, 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, OpArg src, u8 arg);
+
+    // These are probably useful for VFPU emulation.
+    void INSERTPS(X64Reg dest, OpArg src, u8 arg);
+    void EXTRACTPS(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, 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, OpArg src, u8 arg);
+
+    void UNPCKLPS(X64Reg dest, OpArg src);
+    void UNPCKHPS(X64Reg dest, OpArg src);
+    void UNPCKLPD(X64Reg dest, OpArg src);
+    void UNPCKHPD(X64Reg dest, OpArg src);
+
+    // SSE/SSE2: Compares.
+    void COMISS(X64Reg regOp, OpArg arg);
+    void COMISD(X64Reg regOp, OpArg arg);
+    void UCOMISS(X64Reg regOp, OpArg arg);
+    void UCOMISD(X64Reg regOp, OpArg arg);
+
+    // SSE/SSE2: Moves. Use the right data type for your data, in most cases.
+    void MOVAPS(X64Reg regOp, OpArg arg);
+    void MOVAPD(X64Reg regOp, OpArg arg);
+    void MOVAPS(OpArg arg, X64Reg regOp);
+    void MOVAPD(OpArg arg, X64Reg regOp);
+
+    void MOVUPS(X64Reg regOp, OpArg arg);
+    void MOVUPD(X64Reg regOp, OpArg arg);
+    void MOVUPS(OpArg arg, X64Reg regOp);
+    void MOVUPD(OpArg arg, X64Reg regOp);
+
+    void MOVDQA(X64Reg regOp, OpArg arg);
+    void MOVDQA(OpArg arg, X64Reg regOp);
+    void MOVDQU(X64Reg regOp, OpArg arg);
+    void MOVDQU(OpArg arg, X64Reg regOp);
+
+    void MOVSS(X64Reg regOp, OpArg arg);
+    void MOVSD(X64Reg regOp, OpArg arg);
+    void MOVSS(OpArg arg, X64Reg regOp);
+    void MOVSD(OpArg arg, X64Reg regOp);
+
+    void MOVLPS(X64Reg regOp, OpArg arg);
+    void MOVLPD(X64Reg regOp, OpArg arg);
+    void MOVLPS(OpArg arg, X64Reg regOp);
+    void MOVLPD(OpArg arg, X64Reg regOp);
+
+    void MOVHPS(X64Reg regOp, OpArg arg);
+    void MOVHPD(X64Reg regOp, OpArg arg);
+    void MOVHPS(OpArg arg, X64Reg regOp);
+    void MOVHPD(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, OpArg arg);
+    void MOVMSKPD(X64Reg dest, 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, OpArg src);
+
+    // SSE/SSE2: Data type conversions.
+    void CVTPS2PD(X64Reg dest, OpArg src);
+    void CVTPD2PS(X64Reg dest, OpArg src);
+    void CVTSS2SD(X64Reg dest, OpArg src);
+    void CVTSI2SS(X64Reg dest, OpArg src);
+    void CVTSD2SS(X64Reg dest, OpArg src);
+    void CVTSI2SD(X64Reg dest, OpArg src);
+    void CVTDQ2PD(X64Reg regOp, OpArg arg);
+    void CVTPD2DQ(X64Reg regOp, OpArg arg);
+    void CVTDQ2PS(X64Reg regOp, OpArg arg);
+    void CVTPS2DQ(X64Reg regOp, OpArg arg);
+
+    void CVTTPS2DQ(X64Reg regOp, OpArg arg);
+    void CVTTPD2DQ(X64Reg regOp, OpArg arg);
+
+    // Destinations are X64 regs (rax, rbx, ...) for these instructions.
+    void CVTSS2SI(X64Reg xregdest, OpArg src);
+    void CVTSD2SI(X64Reg xregdest, OpArg src);
+    void CVTTSS2SI(X64Reg xregdest, OpArg arg);
+    void CVTTSD2SI(X64Reg xregdest, OpArg arg);
+
+    // SSE2: Packed integer instructions
+    void PACKSSDW(X64Reg dest, OpArg arg);
+    void PACKSSWB(X64Reg dest, OpArg arg);
+    void PACKUSDW(X64Reg dest, OpArg arg);
+    void PACKUSWB(X64Reg dest, 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, OpArg arg);
+    void PAND(X64Reg dest, OpArg arg);
+    void PANDN(X64Reg dest, OpArg arg);
+    void PXOR(X64Reg dest, OpArg arg);
+    void POR(X64Reg dest, OpArg arg);
+
+    void PADDB(X64Reg dest, OpArg arg);
+    void PADDW(X64Reg dest, OpArg arg);
+    void PADDD(X64Reg dest, OpArg arg);
+    void PADDQ(X64Reg dest, OpArg arg);
+
+    void PADDSB(X64Reg dest, OpArg arg);
+    void PADDSW(X64Reg dest, OpArg arg);
+    void PADDUSB(X64Reg dest, OpArg arg);
+    void PADDUSW(X64Reg dest, OpArg arg);
+
+    void PSUBB(X64Reg dest, OpArg arg);
+    void PSUBW(X64Reg dest, OpArg arg);
+    void PSUBD(X64Reg dest, OpArg arg);
+    void PSUBQ(X64Reg dest, OpArg arg);
+
+    void PSUBSB(X64Reg dest, OpArg arg);
+    void PSUBSW(X64Reg dest, OpArg arg);
+    void PSUBUSB(X64Reg dest, OpArg arg);
+    void PSUBUSW(X64Reg dest, OpArg arg);
+
+    void PAVGB(X64Reg dest, OpArg arg);
+    void PAVGW(X64Reg dest, OpArg arg);
+
+    void PCMPEQB(X64Reg dest, OpArg arg);
+    void PCMPEQW(X64Reg dest, OpArg arg);
+    void PCMPEQD(X64Reg dest, OpArg arg);
+
+    void PCMPGTB(X64Reg dest, OpArg arg);
+    void PCMPGTW(X64Reg dest, OpArg arg);
+    void PCMPGTD(X64Reg dest, OpArg arg);
+
+    void PEXTRW(X64Reg dest, OpArg arg, u8 subreg);
+    void PINSRW(X64Reg dest, OpArg arg, u8 subreg);
+
+    void PMADDWD(X64Reg dest, OpArg arg);
+    void PSADBW(X64Reg dest, OpArg arg);
+
+    void PMAXSW(X64Reg dest, OpArg arg);
+    void PMAXUB(X64Reg dest, OpArg arg);
+    void PMINSW(X64Reg dest, OpArg arg);
+    void PMINUB(X64Reg dest, OpArg arg);
+    // SSE4: More MAX/MIN instructions.
+    void PMINSB(X64Reg dest, OpArg arg);
+    void PMINSD(X64Reg dest, OpArg arg);
+    void PMINUW(X64Reg dest, OpArg arg);
+    void PMINUD(X64Reg dest, OpArg arg);
+    void PMAXSB(X64Reg dest, OpArg arg);
+    void PMAXSD(X64Reg dest, OpArg arg);
+    void PMAXUW(X64Reg dest, OpArg arg);
+    void PMAXUD(X64Reg dest, OpArg arg);
+
+    void PMOVMSKB(X64Reg dest, OpArg arg);
+    void PSHUFD(X64Reg dest, OpArg arg, u8 shuffle);
+    void PSHUFB(X64Reg dest, OpArg arg);
+
+    void PSHUFLW(X64Reg dest, OpArg arg, u8 shuffle);
+    void PSHUFHW(X64Reg dest, 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, 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, OpArg arg);
+    void PMOVSXBD(X64Reg dest, OpArg arg);
+    void PMOVSXBQ(X64Reg dest, OpArg arg);
+    void PMOVSXWD(X64Reg dest, OpArg arg);
+    void PMOVSXWQ(X64Reg dest, OpArg arg);
+    void PMOVSXDQ(X64Reg dest, OpArg arg);
+    void PMOVZXBW(X64Reg dest, OpArg arg);
+    void PMOVZXBD(X64Reg dest, OpArg arg);
+    void PMOVZXBQ(X64Reg dest, OpArg arg);
+    void PMOVZXWD(X64Reg dest, OpArg arg);
+    void PMOVZXWQ(X64Reg dest, OpArg arg);
+    void PMOVZXDQ(X64Reg dest, OpArg arg);
+
+    // SSE4: variable blend instructions (xmm0 implicit argument)
+    void PBLENDVB(X64Reg dest, OpArg arg);
+    void BLENDVPS(X64Reg dest, OpArg arg);
+    void BLENDVPD(X64Reg dest, 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, OpArg arg, u8 mode);
+    void ROUNDSD(X64Reg dest, OpArg arg, u8 mode);
+    void ROUNDPS(X64Reg dest, OpArg arg, u8 mode);
+    void ROUNDPD(X64Reg dest, OpArg arg, u8 mode);
+
+    inline void ROUNDNEARSS(X64Reg dest, OpArg arg) { ROUNDSS(dest, arg, FROUND_NEAREST); }
+    inline void ROUNDFLOORSS(X64Reg dest, OpArg arg) { ROUNDSS(dest, arg, FROUND_FLOOR); }
+    inline void ROUNDCEILSS(X64Reg dest, OpArg arg) { ROUNDSS(dest, arg, FROUND_CEIL); }
+    inline void ROUNDZEROSS(X64Reg dest, OpArg arg) { ROUNDSS(dest, arg, FROUND_ZERO); }
+
+    inline void ROUNDNEARSD(X64Reg dest, OpArg arg) { ROUNDSD(dest, arg, FROUND_NEAREST); }
+    inline void ROUNDFLOORSD(X64Reg dest, OpArg arg) { ROUNDSD(dest, arg, FROUND_FLOOR); }
+    inline void ROUNDCEILSD(X64Reg dest, OpArg arg) { ROUNDSD(dest, arg, FROUND_CEIL); }
+    inline void ROUNDZEROSD(X64Reg dest, OpArg arg) { ROUNDSD(dest, arg, FROUND_ZERO); }
+
+    inline void ROUNDNEARPS(X64Reg dest, OpArg arg) { ROUNDPS(dest, arg, FROUND_NEAREST); }
+    inline void ROUNDFLOORPS(X64Reg dest, OpArg arg) { ROUNDPS(dest, arg, FROUND_FLOOR); }
+    inline void ROUNDCEILPS(X64Reg dest, OpArg arg) { ROUNDPS(dest, arg, FROUND_CEIL); }
+    inline void ROUNDZEROPS(X64Reg dest, OpArg arg) { ROUNDPS(dest, arg, FROUND_ZERO); }
+
+    inline void ROUNDNEARPD(X64Reg dest, OpArg arg) { ROUNDPD(dest, arg, FROUND_NEAREST); }
+    inline void ROUNDFLOORPD(X64Reg dest, OpArg arg) { ROUNDPD(dest, arg, FROUND_FLOOR); }
+    inline void ROUNDCEILPD(X64Reg dest, OpArg arg) { ROUNDPD(dest, arg, FROUND_CEIL); }
+    inline void ROUNDZEROPD(X64Reg dest, OpArg arg) { ROUNDPD(dest, arg, FROUND_ZERO); }
+
+    // AVX
+    void VADDSD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VSUBSD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VMULSD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VDIVSD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VADDPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VSUBPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VMULPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VDIVPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VSQRTSD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VSHUFPD(X64Reg regOp1, X64Reg regOp2, OpArg arg, u8 shuffle);
+    void VUNPCKLPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VUNPCKHPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+
+    void VANDPS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VANDPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VANDNPS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VANDNPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VORPS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VORPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VXORPS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VXORPD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+
+    void VPAND(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VPANDN(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VPOR(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VPXOR(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+
+    // FMA3
+    void VFMADD132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD132SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD213SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD231SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD132SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD213SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADD231SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB132SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB213SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB231SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB132SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB213SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUB231SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD132SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD213SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD231SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD132SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD213SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMADD231SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB132SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB213SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB231SS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB132SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB213SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFNMSUB231SD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMADDSUB231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD132PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD213PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD231PS(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD132PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD213PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void VFMSUBADD231PD(X64Reg regOp1, X64Reg regOp2, OpArg arg);
+
+    // VEX GPR instructions
+    void SARX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2);
+    void SHLX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2);
+    void SHRX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2);
+    void RORX(int bits, X64Reg regOp, OpArg arg, u8 rotate);
+    void PEXT(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void PDEP(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void MULX(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg);
+    void BZHI(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2);
+    void BLSR(int bits, X64Reg regOp, OpArg arg);
+    void BLSMSK(int bits, X64Reg regOp, OpArg arg);
+    void BLSI(int bits, X64Reg regOp, OpArg arg);
+    void BEXTR(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2);
+    void ANDN(int bits, X64Reg regOp1, X64Reg regOp2, 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 <typename T>
+    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 Gen::OpArg &arg2);
+    void ABI_CallFunctionPAA(const void *func, void *param1, const Gen::OpArg &arg2, const Gen::OpArg &arg3);
+    void ABI_CallFunctionPPC(const void *func, void *param1, void *param2, u32 param3);
+    void ABI_CallFunctionAC(const void *func, const Gen::OpArg &arg1, u32 param2);
+    void ABI_CallFunctionACC(const void *func, const Gen::OpArg &arg1, u32 param2, u32 param3);
+    void ABI_CallFunctionA(const void *func, const Gen::OpArg &arg1);
+    void ABI_CallFunctionAA(const void *func, const Gen::OpArg &arg1, const Gen::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 <typename Tr, typename T1>
+    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
+    inline int ABI_GetNumXMMRegs() { return 8; }
+    #else
+    inline 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<XEmitter> {
+public:
+    void PoisonMemory() override;
+};
+
+}  // namespace