More code reorganization.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1605 8ced0084-cf51-0410-be5f-012b33b47a6e

16 files changed, 202 insertions, 198 deletions

diff --git a/Source/Core/Core/Src/Console.cpp b/Source/Core/Core/Src/Console.cpp
index ebf99d92a1..3af897edec 100644
--- a/Source/Core/Core/Src/Console.cpp
+++ b/Source/Core/Core/Src/Console.cpp
@@ -35,12 +35,6 @@
 
 void Console_Submit(const char *cmd)
 {
-	CASE1("jits")
-	{
-#ifdef _M_X64
-		jit.PrintStats();
-#endif
-	}
 	CASE1("r")
 	{
 		Core::StartTrace(false);
@@ -57,7 +51,7 @@ void Console_Submit(const char *cmd)
 		u32 addr;
 		sscanf(cmd, "%s %08x", temp, &addr);
 		
-		if (addr!=0)
+		if (addr)
 		{
 #ifdef LOGGING
 			u32 EA =
@@ -75,7 +69,7 @@ void Console_Submit(const char *cmd)
 		TCHAR temp[256];
 		u32 addr;
 		sscanf(cmd, "%s %08x", temp, &addr);
-		if (addr!=0)
+		if (addr)
 		{
 			g_symbolDB.PrintCalls(addr);
 		}
@@ -89,7 +83,7 @@ void Console_Submit(const char *cmd)
 		TCHAR temp[256];
 		u32 addr;
 		sscanf(cmd, "%s %08x", temp, &addr);
-		if (addr!=0)
+		if (addr)
 		{
 			g_symbolDB.PrintCallers(addr);
 		}
@@ -111,7 +105,7 @@ void Console_Submit(const char *cmd)
 		sscanf(cmd, "%s %08x %08x %s", temp, &start, &end, filename);
 
 		FILE *f = fopen(filename, "wb");
-		for (u32 i=start; i<end; i++)
+		for (u32 i = start; i < end; i++)
 		{
 			u8 b = Memory::ReadUnchecked_U8(i);
 			fputc(b,f);
diff --git a/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.cpp b/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.cpp
index bdcc7ccb82..e4e5ae4247 100644
--- a/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.cpp
+++ b/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.cpp
@@ -28,6 +28,7 @@
 #include "../HW/CPU.h"
 #include "../Host.h"
 #include "../PowerPC/SymbolDB.h"
+#include "../PowerPC/Jit64/Jit.h"
 #include "Debugger_BreakPoints.h"
 
 CBreakPoints::TBreakPoints CBreakPoints::m_BreakPoints;
@@ -90,7 +91,7 @@ TMemCheck *CBreakPoints::GetMemCheck(u32 address)
 		}
 		else
 		{
-			if ((*iter).StartAddress==address)
+			if ((*iter).StartAddress == address)
 				return &(*iter);
 		}
 	}
@@ -99,16 +100,17 @@ TMemCheck *CBreakPoints::GetMemCheck(u32 address)
 	return 0;
 }
 
-void CBreakPoints::AddBreakPoint(u32 _iAddress, bool temp)
+void CBreakPoints::AddBreakPoint(u32 em_address, bool temp)
 {
-	if (!IsAddressBreakPoint(_iAddress)) // only add new addresses
+	if (!IsAddressBreakPoint(em_address)) // only add new addresses
 	{
 		TBreakPoint pt; // breakpoint settings
 		pt.bOn = true;
 		pt.bTemporary = temp;
-		pt.iAddress = _iAddress;
+		pt.iAddress = em_address;
 
 		m_BreakPoints.push_back(pt);
+		// jit.NotifyBreakpoint(em_address, true);
 	}
 }
 
@@ -121,11 +123,10 @@ void CBreakPoints::RemoveBreakPoint(u32 _iAddress)
 		if ((*iter).iAddress == _iAddress)
 		{
 			m_BreakPoints.erase(iter);
+			// jit.NotifyBreakpoint(em_address, false);
 			break;
 		}
 	}
-
-	Host_UpdateBreakPointView();
 }
 
 void CBreakPoints::ClearAllBreakPoints()
diff --git a/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.h b/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.h
index 92e746807c..28248ab525 100644
--- a/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.h
+++ b/Source/Core/Core/Src/Debugger/Debugger_BreakPoints.h
@@ -72,7 +72,7 @@ public:
 	static bool IsTempBreakPoint(u32 _iAddress);
 
 	// AddBreakPoint
-	static void AddBreakPoint(u32 _iAddress, bool temp=false);
+	static void AddBreakPoint(u32 em_address, bool temp=false);
 
 	// Remove Breakpoint
 	static void RemoveBreakPoint(u32 _iAddress);
diff --git a/Source/Core/Core/Src/HW/Memmap.cpp b/Source/Core/Core/Src/HW/Memmap.cpp
index 0dd15705b3..bda446bb58 100644
--- a/Source/Core/Core/Src/HW/Memmap.cpp
+++ b/Source/Core/Core/Src/HW/Memmap.cpp
@@ -757,9 +757,9 @@ bool AreMemoryBreakpointsActivated()
 }
 
 
-u32 Read_Instruction(const u32 _Address)
+u32 Read_Instruction(const u32 em_address)
 {
-	return jit.GetOriginalCode(_Address);
+	return jit.GetBlockCache()->GetOriginalCode(em_address);
 }
 
 u32 Read_Opcode(const u32 _Address)
diff --git a/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_LoadStore.cpp b/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_LoadStore.cpp
index c9945f789a..2653771c35 100644
--- a/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_LoadStore.cpp
+++ b/Source/Core/Core/Src/PowerPC/Interpreter/Interpreter_LoadStore.cpp
@@ -340,7 +340,7 @@ void icbi(UGeckoInstruction _inst)
 	// VERY IMPORTANT when we start linking blocks
 	// There are a TON of these so hopefully we can make this mechanism
 	// fast in the JIT
-	jit.InvalidateCodeRange(address, 0x20);
+	jit.GetBlockCache()->InvalidateCodeRange(address, 0x20);
 }
 
 void lbzux(UGeckoInstruction _inst)
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
index 3f7d753a3a..956a3d5da8 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
@@ -196,20 +196,28 @@ namespace CPUCompare
 
 		trampolines.Init();
 		AllocCodeSpace(CODE_SIZE);
-		InitCache();
+
+		blocks.Init();
 		asm_routines.Init();
 	}
 
 	void Jit64::Shutdown()
 	{
 		FreeCodeSpace();
-		ShutdownCache();
 
+		blocks.Shutdown();
 		trampolines.Shutdown();
 		asm_routines.Shutdown();
 	}
 
-	void Jit64::WriteCallInterpreter(UGeckoInstruction _inst)
+	void Jit64::EnterFastRun()
+	{
+		CompiledCode pExecAddr = (CompiledCode)asm_routines.enterCode;
+		pExecAddr();
+		//Will return when PowerPC::state changes
+	}
+
+	void Jit64::WriteCallInterpreter(UGeckoInstruction inst)
 	{
 		gpr.Flush(FLUSH_ALL);
 		fpr.Flush(FLUSH_ALL);
@@ -218,8 +226,14 @@ namespace CPUCompare
 			MOV(32, M(&PC), Imm32(js.compilerPC));
 			MOV(32, M(&NPC), Imm32(js.compilerPC + 4));
 		}
-		Interpreter::_interpreterInstruction instr = GetInterpreterOp(_inst);
-		ABI_CallFunctionC((void*)instr, _inst.hex);
+		Interpreter::_interpreterInstruction instr = GetInterpreterOp(inst);
+		ABI_CallFunctionC((void*)instr, inst.hex);
+	}
+
+	void Jit64::unknown_instruction(UGeckoInstruction inst)
+	{
+		//	CCPU::Break();
+		PanicAlert("unknown_instruction %08x - Fix me ;)", inst.hex);
 	}
 
 	void Jit64::Default(UGeckoInstruction _inst)
@@ -286,11 +300,11 @@ namespace CPUCompare
 		b->exitPtrs[exit_num] = GetWritableCodePtr();
 		
 		// Link opportunity!
-		int block = GetBlockNumberFromAddress(destination);
+		int block = blocks.GetBlockNumberFromAddress(destination);
 		if (block >= 0 && jo.enableBlocklink) 
 		{
 			// It exists! Joy of joy!
-			JMP(GetBlock(block)->checkedEntry, true);
+			JMP(blocks.GetBlock(block)->checkedEntry, true);
 			b->linkStatus[exit_num] = true;
 		}
 		else 
@@ -323,6 +337,21 @@ namespace CPUCompare
 		MOV(32, M(&PC), Imm32(js.compilerPC + 4));
 		JMP(asm_routines.testExceptions, true);
 	}
+	
+	const u8 *Jit64::Jit(u32 em_address)
+	{
+		if (GetSpaceLeft() < 0x10000 || blocks.IsFull())
+		{
+			LOG(DYNA_REC, "JIT cache full - clearing.")
+			if (Core::g_CoreStartupParameter.bJITUnlimitedCache)
+			{
+				PanicAlert("What? JIT cache still full - clearing.");
+			}
+			ClearCache();
+		}
+
+		return blocks.Jit(em_address);
+	}
 
 	const u8* Jit64::DoJit(u32 emaddress, JitBlock &b)
 	{
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit.h b/Source/Core/Core/Src/PowerPC/Jit64/Jit.h
index ef858c94a9..a73b677600 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit.h
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit.h
@@ -71,37 +71,7 @@ public:
 
 class Jit64 : public Gen::XCodeBlock
 {
-public:
-	// TODO(ector) - optimize this struct for size
-	struct JitBlock
-	{
-		u32 exitAddress[2];  // 0xFFFFFFFF == unknown
-		u8 *exitPtrs[2];     // to be able to rewrite the exit jump
-		bool linkStatus[2];
-
-		u32 originalAddress;
-		u32 originalFirstOpcode; //to be able to restore
-		u32 codeSize; 
-		u32 originalSize;
-		int runCount;  // for profiling.
-#ifdef _WIN32
-		// we don't really need to save start and stop
-		// TODO (mb2): ticStart and ticStop -> "local var" mean "in block" ... low priority ;)
-		LARGE_INTEGER ticStart;		// for profiling - time.
-		LARGE_INTEGER ticStop;		// for profiling - time.
-		LARGE_INTEGER ticCounter;	// for profiling - time.
-#endif
-		const u8 *checkedEntry;
-		bool invalid;
-		int flags;
-	};
 private:
-	enum BlockFlag
-	{
-		BLOCK_USE_GQR0 = 0x1, BLOCK_USE_GQR1 = 0x2, BLOCK_USE_GQR2 = 0x4, BLOCK_USE_GQR3 = 0x8,
-		BLOCK_USE_GQR4 = 0x10, BLOCK_USE_GQR5 = 0x20, BLOCK_USE_GQR6 = 0x40, BLOCK_USE_GQR7 = 0x80,
-	};
-	
 	struct JitState
 	{
 		u32 compilerPC;
@@ -139,20 +109,14 @@ private:
 		bool accurateSinglePrecision;
 	};
 
-
+	JitBlockCache blocks;
 	TrampolineCache trampolines;
 	GPRRegCache gpr;
 	FPURegCache fpr;
 
-	u8 **blockCodePointers;
-
-	std::multimap<u32, int> links_to;
-
-	JitBlock *blocks;
-	int numBlocks;
-
 public:
-	typedef void (*CompiledCode)();
+	Jit64() {blocks.SetJit(this);}
+	~Jit64() {}
 
 	JitState js;
 	JitOptions jo;
@@ -162,40 +126,24 @@ public:
 	void Init();
 	void Shutdown();
 
-	void PrintStats();
-
 	// Jit!
 
-	const u8* Jit(u32 emaddress);
+	const u8 *Jit(u32 emAddress);  // calls blocks.Jit, which in turn calls DoJit below after setting up a block.
 	const u8* DoJit(u32 emaddress, JitBlock &b);
 
+	JitBlockCache *GetBlockCache() { return &blocks; }
+
+	void ClearCache() 
+	{
+		blocks.Clear();
+		trampolines.ClearCodeSpace();
+	}
+
 	// Run!
 
 	void EnterFastRun();
 	const u8 *BackPatch(u8 *codePtr, int accessType, u32 emAddress, CONTEXT *ctx);
 
-	// Code Cache
-
-	u32 GetOriginalCode(u32 address);
-	JitBlock *GetBlock(int no);
-	void InvalidateCodeRange(u32 address, u32 length);
-	int GetBlockNumberFromAddress(u32 address);
-	CompiledCode GetCompiledCode(u32 address);
-	CompiledCode GetCompiledCodeFromBlock(int blockNumber);
-	int GetCodeSize();
-	int GetNumBlocks();
-	u8 **GetCodePointers();
-	void DestroyBlocksWithFlag(BlockFlag death_flag);
-	void LinkBlocks();
-	void LinkBlockExits(int i);
-	void LinkBlock(int i);
-	void ClearCache();
-	void InitCache();
-	void ShutdownCache();
-	void ResetCache();
-	void DestroyBlock(int blocknum, bool invalidate);
-	bool RangeIntersect(int s1, int e1, int s2, int e2) const;
-
 #define JIT_OPCODE 0
 
 	// Utilities for use by opcodes
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp b/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
index 0877ab9a05..17d2b508fb 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/JitAsm.cpp
@@ -169,10 +169,8 @@ void AsmRoutineManager::Generate()
 
 	ABI_PushAllCalleeSavedRegsAndAdjustStack();
 
-	if (!jit.GetCodePointers() || !Memory::base)
-		PanicAlert("Memory::base and jit.GetCodePointers() must return valid values");
 	MOV(64, R(RBX), Imm64((u64)Memory::base));
-	MOV(64, R(R15), Imm64((u64)jit.GetCodePointers())); //It's below 2GB so 32 bits are good enough
+	MOV(64, R(R15), Imm64((u64)jit.GetBlockCache()->GetCodePointers())); //It's below 2GB so 32 bits are good enough
 	const u8 *outerLoop = GetCodePtr();
 
 		CALL((void *)&CoreTiming::Advance);
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitBackpatch.cpp b/Source/Core/Core/Src/PowerPC/Jit64/JitBackpatch.cpp
index 569c2f4d73..65e5bbdea2 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/JitBackpatch.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/JitBackpatch.cpp
@@ -204,7 +204,7 @@ const u8 *Jit64::BackPatch(u8 *codePtr, int accessType, u32 emAddress, CONTEXT *
 		if (info.instructionSize < 3)
 			PanicAlert("instruction too small");
 		// We entered here with a BSWAP-ed EAX. We'll have to swap it back.
-		ctx->Rax = Common::swap32(ctx->Rax);
+		ctx->Rax = Common::swap32((u32)ctx->Rax);
 		return codePtr - 2;
 	}
 	return 0;
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitCache.cpp b/Source/Core/Core/Src/PowerPC/Jit64/JitCache.cpp
index 1c03f52efe..18a3df758a 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/JitCache.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/JitCache.cpp
@@ -24,8 +24,6 @@
 
 //#define OPROFILE_REPORT
 
-#include <map>
-
 #include "Common.h"
 #include "../../Core.h"
 #include "MemoryUtil.h"
@@ -50,31 +48,23 @@
 #include <opagent.h>
 #endif
 
-using namespace Gen;
-
 #ifdef OPROFILE_REPORT
 	op_agent_t agent;
 #endif
 
-#define INVALID_EXIT 0xFFFFFFFF
-
-	enum 
-	{
-		TRAMPOLINE_SIZE = 1024*1024,
-	};
+using namespace Gen;
 
-	int MAX_NUM_BLOCKS = 65536*2;
+#define INVALID_EXIT 0xFFFFFFFF
 
 
-	void Jit64::PrintStats()
+	bool JitBlockCache::IsFull() const 
 	{
-		LOG(DYNA_REC, "JIT Statistics =======================");
-		LOG(DYNA_REC, "Number of blocks currently: %i", numBlocks);
-		LOG(DYNA_REC, "======================================");
+		return GetNumBlocks() >= MAX_NUM_BLOCKS - 1;
 	}
 
-	void Jit64::InitCache()
+	void JitBlockCache::Init()
 	{
+		MAX_NUM_BLOCKS = 65536*2;
 		if (Core::g_CoreStartupParameter.bJITUnlimitedCache)
 		{
 			MAX_NUM_BLOCKS = 65536*8;
@@ -86,10 +76,10 @@ using namespace Gen;
 		blocks = new JitBlock[MAX_NUM_BLOCKS];
 		blockCodePointers = new u8*[MAX_NUM_BLOCKS];
 
-		ClearCache();
+		Clear();
 	}
 
-	void Jit64::ShutdownCache()
+	void JitBlockCache::Shutdown()
 	{
 		delete [] blocks;
 		delete [] blockCodePointers;
@@ -103,7 +93,7 @@ using namespace Gen;
 	
 	// This clears the JIT cache. It's called from JitCache.cpp when the JIT cache
 	// is full and when saving and loading states.
-	void Jit64::ClearCache()
+	void JitBlockCache::Clear()
 	{
 		Core::DisplayMessage("Cleared code cache.", 3000);
 		// Is destroying the blocks really necessary?
@@ -114,11 +104,9 @@ using namespace Gen;
 		links_to.clear();
 		numBlocks = 0;
 		memset(blockCodePointers, 0, sizeof(u8*)*MAX_NUM_BLOCKS);
-
-		trampolines.ClearCodeSpace();
 	}
 
-	void Jit64::DestroyBlocksWithFlag(BlockFlag death_flag)
+	void JitBlockCache::DestroyBlocksWithFlag(BlockFlag death_flag)
 	{
 		for (int i = 0; i < numBlocks; i++)
 		{
@@ -129,23 +117,23 @@ using namespace Gen;
 		}
 	}
 
-	void Jit64::ResetCache()
+	void JitBlockCache::Reset()
 	{
-		ShutdownCache();
-		InitCache();
+		Shutdown();
+		Init();
 	}
 
-	Jit64::JitBlock *Jit64::GetBlock(int no)
+	JitBlock *JitBlockCache::GetBlock(int no)
 	{
 		return &blocks[no];
 	}
 
-	int Jit64::GetNumBlocks()
+	int JitBlockCache::GetNumBlocks() const
 	{
 		return numBlocks;
 	}
 
-	bool Jit64::RangeIntersect(int s1, int e1, int s2, int e2) const
+	bool JitBlockCache::RangeIntersect(int s1, int e1, int s2, int e2) const
 	{
 		// check if any endpoint is inside the other range
 		if ( (s1 >= s2 && s1 <= e2) ||
@@ -162,18 +150,8 @@ using namespace Gen;
 		return jit.Jit(emAddress);
 	}
 
-	const u8 *Jit64::Jit(u32 emAddress)
+	const u8 *JitBlockCache::Jit(u32 emAddress)
 	{
-		if (GetSpaceLeft() < 0x10000 || numBlocks >= MAX_NUM_BLOCKS - 1)
-		{
-			LOG(DYNA_REC, "JIT cache full - clearing.")
-			if (Core::g_CoreStartupParameter.bJITUnlimitedCache)
-			{
-				PanicAlert("What? JIT cache still full - clearing.");
-			}
-			ClearCache();
-		}
-
 		JitBlock &b = blocks[numBlocks];
 		b.invalid = false;
 		b.originalAddress = emAddress;
@@ -185,10 +163,10 @@ using namespace Gen;
 		b.linkStatus[0] = false;
 		b.linkStatus[1] = false;
 		
-		blockCodePointers[numBlocks] = (u8*)DoJit(emAddress, b);  //cast away const
+		blockCodePointers[numBlocks] = (u8*)jit->DoJit(emAddress, b);  //cast away const
 		Memory::WriteUnchecked_U32((JIT_OPCODE << 26) | numBlocks, emAddress);
 
-		if (jo.enableBlocklink) {
+		if (jit->jo.enableBlocklink) {
 			for (int i = 0; i < 2; i++) {
 				if (b.exitAddress[i] != INVALID_EXIT) {
 					links_to.insert(std::pair<u32, int>(b.exitAddress[i], numBlocks));
@@ -211,26 +189,12 @@ using namespace Gen;
 		return 0;
 	}
 
-	void Jit64::unknown_instruction(UGeckoInstruction _inst)
-	{
-		//	CCPU::Break();
-		PanicAlert("unknown_instruction Jit64 - Fix me ;)");
-		_dbg_assert_(DYNA_REC, 0);
-	}
-	
-	u8 **Jit64::GetCodePointers()
+	u8 **JitBlockCache::GetCodePointers()
 	{
 		return blockCodePointers;
 	}
 
-	void Jit64::EnterFastRun()
-	{
-		CompiledCode pExecAddr = (CompiledCode)asm_routines.enterCode;
-		pExecAddr();
-		//Will return when PowerPC::state changes
-	}
-
-	int Jit64::GetBlockNumberFromAddress(u32 addr)
+	int JitBlockCache::GetBlockNumberFromAddress(u32 addr)
 	{
 		if (!blocks)
 			return -1;
@@ -256,7 +220,7 @@ using namespace Gen;
 		}
 	}
 
-	u32 Jit64::GetOriginalCode(u32 address)
+	u32 JitBlockCache::GetOriginalCode(u32 address)
 	{
 		int num = GetBlockNumberFromAddress(address);
 		if (num == -1)
@@ -265,7 +229,7 @@ using namespace Gen;
 			return blocks[num].originalFirstOpcode;
 	} 
 
-	Jit64::CompiledCode Jit64::GetCompiledCode(u32 address)
+	CompiledCode JitBlockCache::GetCompiledCode(u32 address)
 	{
 		int num = GetBlockNumberFromAddress(address);
 		if (num == -1)
@@ -274,7 +238,7 @@ using namespace Gen;
 			return (CompiledCode)blockCodePointers[num];
 	}
 
-	Jit64::CompiledCode Jit64::GetCompiledCodeFromBlock(int blockNumber)
+	CompiledCode JitBlockCache::GetCompiledCodeFromBlock(int blockNumber)
 	{
 		return (CompiledCode)blockCodePointers[blockNumber];
 	}
@@ -285,7 +249,7 @@ using namespace Gen;
 	//Can be faster by doing a queue for blocks to link up, and only process those
 	//Should probably be done
 
-	void Jit64::LinkBlockExits(int i)
+	void JitBlockCache::LinkBlockExits(int i)
 	{
 		JitBlock &b = blocks[i];
 		if (b.invalid)
@@ -310,10 +274,10 @@ using namespace Gen;
 
 	using namespace std;
 
-	void Jit64::LinkBlock(int i)
+	void JitBlockCache::LinkBlock(int i)
 	{
 		LinkBlockExits(i);
-		Jit64::JitBlock &b = blocks[i];
+		JitBlock &b = blocks[i];
 		std::map<u32, int>::iterator iter;
 		pair<multimap<u32, int>::iterator, multimap<u32, int>::iterator> ppp;
 		// equal_range(b) returns pair<iterator,iterator> representing the range
@@ -327,10 +291,10 @@ using namespace Gen;
 		}
 	}
 
-	void Jit64::DestroyBlock(int blocknum, bool invalidate)
+	void JitBlockCache::DestroyBlock(int blocknum, bool invalidate)
 	{
 		u32 codebytes = (JIT_OPCODE << 26) | blocknum; //generate from i
-		Jit64::JitBlock &b = blocks[blocknum];
+		JitBlock &b = blocks[blocknum];
 		b.invalid = 1;
 		if (codebytes == Memory::ReadFast32(b.originalAddress))
 		{
@@ -363,9 +327,9 @@ using namespace Gen;
 	}
 
 
-	void Jit64::InvalidateCodeRange(u32 address, u32 length)
+	void JitBlockCache::InvalidateCodeRange(u32 address, u32 length)
 	{
-		if (!jo.enableBlocklink)
+		if (!jit->jo.enableBlocklink)
 			return;
 		return;
 		//This is slow but should be safe (zelda needs it for block linking)
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/JitCache.h b/Source/Core/Core/Src/PowerPC/Jit64/JitCache.h
index 49f865fde4..e3818e965f 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/JitCache.h
+++ b/Source/Core/Core/Src/PowerPC/Jit64/JitCache.h
@@ -17,8 +17,87 @@
 #ifndef _JITCACHE_H
 #define _JITCACHE_H
 
+#include <map>
+
 #include "../Gekko.h"
 
-// Will soon introduce the JitBlockCache class here.
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+enum BlockFlag
+{
+	BLOCK_USE_GQR0 = 0x1, BLOCK_USE_GQR1 = 0x2, BLOCK_USE_GQR2 = 0x4, BLOCK_USE_GQR3 = 0x8,
+	BLOCK_USE_GQR4 = 0x10, BLOCK_USE_GQR5 = 0x20, BLOCK_USE_GQR6 = 0x40, BLOCK_USE_GQR7 = 0x80,
+};
+
+// TODO(ector) - optimize this struct for size
+struct JitBlock
+{
+	u32 exitAddress[2];  // 0xFFFFFFFF == unknown
+	u8 *exitPtrs[2];     // to be able to rewrite the exit jump
+	bool linkStatus[2];
+
+	u32 originalAddress;
+	u32 originalFirstOpcode; //to be able to restore
+	u32 codeSize; 
+	u32 originalSize;
+	int runCount;  // for profiling.
+
+#ifdef _WIN32
+	// we don't really need to save start and stop
+	// TODO (mb2): ticStart and ticStop -> "local var" mean "in block" ... low priority ;)
+	LARGE_INTEGER ticStart;		// for profiling - time.
+	LARGE_INTEGER ticStop;		// for profiling - time.
+	LARGE_INTEGER ticCounter;	// for profiling - time.
+#endif
+	const u8 *checkedEntry;
+	bool invalid;
+	int flags;
+};
+
+class Jit64;
+
+typedef void (*CompiledCode)();
+
+class JitBlockCache
+{
+	Jit64 *jit;
+
+	u8 **blockCodePointers;
+	JitBlock *blocks;
+	int numBlocks;
+	std::multimap<u32, int> links_to;
+
+	int MAX_NUM_BLOCKS;
+
+public:
+	JitBlockCache() {}
+
+	void SetJit(Jit64 *jit_) { jit = jit_; }
+
+	const u8* Jit(u32 emaddress);
+	void Clear();
+	void Init();
+	void Shutdown();
+	void Reset();
+
+	bool IsFull() const;
+	// Code Cache
+	u32 GetOriginalCode(u32 address);
+	JitBlock *GetBlock(int no);
+	void InvalidateCodeRange(u32 address, u32 length);
+	int GetBlockNumberFromAddress(u32 address);
+	CompiledCode GetCompiledCode(u32 address);
+	CompiledCode GetCompiledCodeFromBlock(int blockNumber);
+	int GetNumBlocks() const;
+	u8 **GetCodePointers();
+	void DestroyBlocksWithFlag(BlockFlag death_flag);
+	void LinkBlocks();
+	void LinkBlockExits(int i);
+	void LinkBlock(int i);
+	void DestroyBlock(int blocknum, bool invalidate);
+	bool RangeIntersect(int s1, int e1, int s2, int e2) const;
+};
 
 #endif
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
index 6891fe5987..81ae7beec7 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
@@ -131,18 +131,6 @@
 		}
 	}
 
-	/*
-	
-		if (js.next_inst.OPCD == 16) {  // bcx
-			if (!js.next_inst.LK && (js.next_inst.BO & BO_DONT_DECREMENT_FLAG))
-			{
-				// it's clear there's plenty of opportunity.
-				//PanicAlert("merge");
-			}
-		}
-	*/
-
-	// unsigned
 	void Jit64::cmpXX(UGeckoInstruction inst)
 	{	
 		// USES_CR
diff --git a/Source/Core/Core/Src/PowerPC/Profiler.cpp b/Source/Core/Core/Src/PowerPC/Profiler.cpp
index 2d5a7c2dc1..1cd46c21e4 100644
--- a/Source/Core/Core/Src/PowerPC/Profiler.cpp
+++ b/Source/Core/Core/Src/PowerPC/Profiler.cpp
@@ -41,16 +41,16 @@ struct BlockStat
 
 void WriteProfileResults(const char *filename) {
 	std::vector<BlockStat> stats;
-	stats.reserve(jit.GetNumBlocks());
+	stats.reserve(jit.GetBlockCache()->GetNumBlocks());
 	u64 cost_sum = 0;
 #ifdef _WIN32
 	u64 timecost_sum = 0;
 	LARGE_INTEGER countsPerSec;
 	QueryPerformanceFrequency(&countsPerSec);
 #endif
-	for (int i = 0; i < jit.GetNumBlocks(); i++)
+	for (int i = 0; i < jit.GetBlockCache()->GetNumBlocks(); i++)
 	{
-		const Jit64::JitBlock *block = jit.GetBlock(i);
+		const JitBlock *block = jit.GetBlockCache()->GetBlock(i);
 		u64 cost = (block->originalSize / 4) * block->runCount;		// rough heuristic. mem instructions should cost more.
 #ifdef _WIN32
 		u64 timecost = block->ticCounter.QuadPart;					// Indeed ;)
@@ -73,8 +73,9 @@ void WriteProfileResults(const char *filename) {
 	fprintf(f, "origAddr\tblkName\tcost\ttimeCost\tpercent\ttimePercent\tOvAllinBlkTime(ms)\tblkCodeSize\n");
 	for (unsigned int i = 0; i < stats.size(); i++)
 	{
-		const Jit64::JitBlock *block = jit.GetBlock(stats[i].blockNum);
-		if (block) {
+		const JitBlock *block = jit.GetBlockCache()->GetBlock(stats[i].blockNum);
+		if (block)
+		{
 			std::string name = g_symbolDB.GetDescription(block->originalAddress);
 			double percent = 100.0 * (double)stats[i].cost / (double)cost_sum;
 #ifdef _WIN32 
@@ -90,4 +91,4 @@ void WriteProfileResults(const char *filename) {
 	fclose(f);
 }
 
-}
+}  // namespace
diff --git a/Source/Core/Core/Src/State.cpp b/Source/Core/Core/Src/State.cpp
index dd238ed5d1..d6dc4ceea6 100644
--- a/Source/Core/Core/Src/State.cpp
+++ b/Source/Core/Core/Src/State.cpp
@@ -97,7 +97,7 @@ void SaveStateCallback(u64 userdata, int cyclesLate)
 	p.SetMode(PointerWrap::MODE_WRITE);
 	DoState(p);
 
-	if(bCompressed) {
+	if (bCompressed) {
 		fwrite(&sz, sizeof(int), 1, f);
 	} else {
 		int zero = 0;
@@ -105,7 +105,7 @@ void SaveStateCallback(u64 userdata, int cyclesLate)
 	}
 
 
-	if(bCompressed) {
+	if (bCompressed) {
 		if (lzo_init() != LZO_E_OK)
 			PanicAlert("Internal LZO Error - lzo_init() failed");
 		else {
@@ -163,15 +163,15 @@ void LoadStateCallback(u64 userdata, int cyclesLate)
 
 	bCompressedState = (sz != 0);
 
-	if(bCompressedState) {
+	if (bCompressedState) {
 		if (lzo_init() != LZO_E_OK)
 			PanicAlert("Internal LZO Error - lzo_init() failed");
 		else {
 			lzo_uint i = 0;
 			buffer = new u8[sz];
 			
-			for(;;) {
-				if(fread(&cur_len, 1, sizeof(int), f) == 0)
+			for (;;) {
+				if (fread(&cur_len, 1, sizeof(int), f) == 0)
 					break;
 				fread(out, 1, cur_len, f);
 
@@ -216,7 +216,8 @@ void State_Shutdown()
 	// nothing to do, here for consistency.
 }
 
-std::string MakeStateFilename(int state_number) {
+std::string MakeStateFilename(int state_number)
+{
 	return StringFromFormat(FULL_STATESAVES_DIR "%s.s%02i", Core::GetStartupParameter().GetUniqueID().c_str(), state_number);
 }
 
diff --git a/Source/Core/DebuggerWX/Src/CodeWindow.cpp b/Source/Core/DebuggerWX/Src/CodeWindow.cpp
index 4931c090b1..c1cd760bca 100644
--- a/Source/Core/DebuggerWX/Src/CodeWindow.cpp
+++ b/Source/Core/DebuggerWX/Src/CodeWindow.cpp
@@ -496,7 +496,9 @@ void CCodeWindow::OnJITOff(wxCommandEvent& event)
 		// creates the SCoreStartupParameter as a game is loaded
 		GetMenuBar()->Check(event.GetId(),!event.IsChecked());
 		wxMessageBox(_T("Please start a game before changing mode."));	
-	} else {
+	}
+	else
+	{
 		if (Core::GetState() != Core::CORE_RUN)
 		{
 			switch (event.GetId())
@@ -504,9 +506,8 @@ void CCodeWindow::OnJITOff(wxCommandEvent& event)
 			case IDM_JITUNLIMITED:
 				Core::g_CoreStartupParameter.bJITUnlimitedCache = event.IsChecked();
 				jit.ClearCache(); // allow InitCache() even after the game has started
-				jit.InitCache();
 				GetMenuBar()->Enable(event.GetId(),!event.IsChecked());
-				break;
+				return;  // avoid a second jit.ClearCache
 			case IDM_JITOFF:
 				Core::g_CoreStartupParameter.bJITOff = event.IsChecked(); break;
 			case IDM_JITLSOFF:
@@ -531,15 +532,15 @@ void CCodeWindow::OnJITOff(wxCommandEvent& event)
 				Core::g_CoreStartupParameter.bJITSystemRegistersOff = event.IsChecked(); break;
 			}
 			jit.ClearCache();			
-		} else {
+		}
+		else
+		{
 			//event.Skip(); // this doesn't work
 			GetMenuBar()->Check(event.GetId(),!event.IsChecked());
 			wxMessageBox(_T("Please pause the emulator before changing mode."));		
 		}
 	}
 }
-// ==============
-
 
 void CCodeWindow::OnJitMenu(wxCommandEvent& event)
 {
diff --git a/Source/Core/DebuggerWX/Src/JitWindow.cpp b/Source/Core/DebuggerWX/Src/JitWindow.cpp
index 81c57e7328..4405b8b7fc 100644
--- a/Source/Core/DebuggerWX/Src/JitWindow.cpp
+++ b/Source/Core/DebuggerWX/Src/JitWindow.cpp
@@ -138,16 +138,16 @@ void CJitWindow::Compare(u32 em_address)
 	disassembler x64disasm;
 	x64disasm.set_syntax_intel();
 
-	int block_num = jit.GetBlockNumberFromAddress(em_address);
+	int block_num = jit.GetBlockCache()->GetBlockNumberFromAddress(em_address);
 	if (block_num < 0)
 	{
 		for (int i = 0; i < 500; i++) {
-			block_num = jit.GetBlockNumberFromAddress(em_address - 4 * i);
+			block_num = jit.GetBlockCache()->GetBlockNumberFromAddress(em_address - 4 * i);
 			if (block_num >= 0)
 				break;
 		}
 		if (block_num >= 0) {
-			Jit64::JitBlock *block = jit.GetBlock(block_num);
+			JitBlock *block = jit.GetBlockCache()->GetBlock(block_num);
 			if (!(block->originalAddress <= em_address && block->originalSize + block->originalAddress >= em_address))
 				block_num = -1;
 		}
@@ -158,13 +158,13 @@ void CJitWindow::Compare(u32 em_address)
 			return;
 		}
 	}
-	Jit64::JitBlock *block = jit.GetBlock(block_num);
+	JitBlock *block = jit.GetBlockCache()->GetBlock(block_num);
 	
 	// 800031f0
 	// == Fill in x86 box
 
 	memset(xDis, 0, 65536);
-	const u8 *code = (const u8 *)jit.GetCompiledCodeFromBlock(block_num);
+	const u8 *code = (const u8 *)jit.GetBlockCache()->GetCompiledCodeFromBlock(block_num);
 	u64 disasmPtr = (u64)code;
 	int size = block->codeSize;
 	const u8 *end = code + size;