Sped up the Dolphin debugger in JIT mode by splitting a block only while stepping or when it contains a breakpoint. The block is invalidated when a breakpoint is set or cleared.

Fixed a bug in the JitCache where the JIT icache was not being invalidated when a block containing the instruction was destroyed.

Source/Core/Common/Src/BreakPoints.cpp

@@ -19,6 +19,7 @@
 #include "DebugInterface.h"
 #include "BreakPoints.h"
 #include <sstream>
+#include "..\..\Core\Src\PowerPC\JitCommon\JitBase.h"
 
 bool BreakPoints::IsAddressBreakPoint(u32 _iAddress)
 {
@@ -70,7 +71,11 @@ void BreakPoints::AddFromStrings(const TBreakPointsStr& bps)
 void BreakPoints::Add(const TBreakPoint& bp)
 {
 	if (!IsAddressBreakPoint(bp.iAddress))
+	{
 		m_BreakPoints.push_back(bp);
+		if (jit)
+			jit->GetBlockCache()->InvalidateICache(bp.iAddress, 4);
+	}
 }
 
 void BreakPoints::Add(u32 em_address, bool temp)
@@ -83,21 +88,35 @@ void BreakPoints::Add(u32 em_address, bool temp)
 		pt.iAddress = em_address;
 
 		m_BreakPoints.push_back(pt);
+
+		if (jit)
+			jit->GetBlockCache()->InvalidateICache(em_address, 4);
 	}
 }
 
-void BreakPoints::Remove(u32 _iAddress)
+void BreakPoints::Remove(u32 em_address)
 {
 	for (TBreakPoints::iterator i = m_BreakPoints.begin(); i != m_BreakPoints.end(); ++i)
 	{
-		if (i->iAddress == _iAddress)
+		if (i->iAddress == em_address)
 		{
 			m_BreakPoints.erase(i);
+			if (jit)
+				jit->GetBlockCache()->InvalidateICache(em_address, 4);
 			return;
 		}
 	}
 }
 
+void BreakPoints::Clear()
+{
+	for (TBreakPoints::iterator i = m_BreakPoints.begin(); i != m_BreakPoints.end(); ++i)
+	{
+		if (jit)
+			jit->GetBlockCache()->InvalidateICache(i->iAddress, 4);
+		m_BreakPoints.erase(i);
+	}
+}
 
 MemChecks::TMemChecksStr MemChecks::GetStrings() const
 {

Source/Core/Common/Src/BreakPoints.h

@@ -78,7 +78,7 @@ public:
 
 	// Remove Breakpoint
 	void Remove(u32 _iAddress);
-	void Clear() { m_BreakPoints.clear(); };
+	void Clear();
 
     void DeleteByAddress(u32 _Address);
 

Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp

@@ -415,9 +415,8 @@ const u8* Jit64::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
 
 	if (Core::g_CoreStartupParameter.bEnableDebugging)
 	{
-		// Comment out the following to disable breakpoints (speed-up)
-		blockSize = 1;
-		broken_block = true;
+		if (GetState() == CPU_STEPPING)
+			blockSize = 1;
 		Trace();
 	}
 
@@ -597,6 +596,20 @@ const u8* Jit64::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
 				SetJumpTarget(clearInt);
 			}
 
+			if (Core::g_CoreStartupParameter.bEnableDebugging && breakpoints.IsAddressBreakPoint(ops[i].address) && GetState() != CPU_STEPPING)
+			{
+				MOV(32, M(&PC), Imm32(ops[i].address));
+				ABI_CallFunction(reinterpret_cast<void *>(&PowerPC::CheckBreakPoints));
+				TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(0xFFFFFFFF));
+
+				FixupBranch noBreakpoint = J_CC(CC_Z);
+				gpr.Flush(FLUSH_ALL);
+				fpr.Flush(FLUSH_ALL);
+
+				WriteExit(ops[i].address, 0);
+				SetJumpTarget(noBreakpoint);
+			}
+
 			Jit64Tables::CompileInstruction(ops[i]);
 
 			if (js.memcheck && (opinfo->flags & FL_LOADSTORE))

Source/Core/Core/Src/PowerPC/Jit64IL/IR.cpp

@@ -1269,7 +1269,8 @@ static const unsigned alwaysUsedList[] = {
 	Store16, Store32, StoreSingle, StoreDouble, StorePaired, StoreFReg, FDCmpCR,
 	BlockStart, BlockEnd, IdleBranch, BranchCond, BranchUncond, ShortIdleLoop,
 	SystemCall, InterpreterBranch, RFIExit, FPExceptionCheckStart,
-	FPExceptionCheckEnd, ISIException, ExtExceptionCheck, Int3, Tramp, Nop
+	FPExceptionCheckEnd, ISIException, ExtExceptionCheck, BreakPointCheck,
+	Int3, Tramp, Nop
 };
 static const unsigned extra8RegList[] = {
 	LoadGReg, LoadCR, LoadGQR, LoadFReg, LoadFRegDENToZero,

Source/Core/Core/Src/PowerPC/Jit64IL/IR.h

@@ -168,7 +168,7 @@ enum Opcode {
 	// used for exception checking, at least until someone
 	// has a better idea of integrating it
 	FPExceptionCheckStart, FPExceptionCheckEnd,
-	ISIException,ExtExceptionCheck,
+	ISIException, ExtExceptionCheck, BreakPointCheck,
 	// "Opcode" representing a register too far away to
 	// reference directly; this is a size optimization
 	Tramp,
@@ -414,6 +414,9 @@ public:
 	InstLoc EmitExtExceptionCheck(InstLoc pc) {
 		return EmitUOp(ExtExceptionCheck, pc);
 	}
+	InstLoc EmitBreakPointCheck(InstLoc pc) {
+		return EmitUOp(BreakPointCheck, pc);
+	}
 	InstLoc EmitRFIExit() {
 		return FoldZeroOp(RFIExit, 0);
 	}		

Source/Core/Core/Src/PowerPC/Jit64IL/IR_X86.cpp

@@ -763,6 +763,7 @@ static void DoWriteCode(IRBuilder* ibuild, JitIL* Jit, bool UseProfile, bool Mak
 		case FPExceptionCheckEnd:
 		case ISIException:
 		case ExtExceptionCheck:
+		case BreakPointCheck:
 		case Int3:
 		case Tramp:
 			// No liveness effects
@@ -1943,6 +1944,17 @@ static void DoWriteCode(IRBuilder* ibuild, JitIL* Jit, bool UseProfile, bool Mak
 			Jit->SetJumpTarget(clearInt);
 			break;
 		}
+		case BreakPointCheck: {
+			unsigned InstLoc = ibuild->GetImmValue(getOp1(I));
+
+			Jit->MOV(32, M(&PC), Imm32(InstLoc));
+			Jit->ABI_CallFunction(reinterpret_cast<void *>(&PowerPC::CheckBreakPoints));
+			Jit->TEST(32, M((void*)PowerPC::GetStatePtr()), Imm32(0xFFFFFFFF));
+			FixupBranch noBreakpoint = Jit->J_CC(CC_Z);
+			Jit->WriteExit(InstLoc, 0);
+			Jit->SetJumpTarget(noBreakpoint);
+			break;
+		}
 		case Int3: {
 			Jit->INT3();
 			break;

Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp

@@ -523,8 +523,8 @@ const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
 
 	if (Core::g_CoreStartupParameter.bEnableDebugging)
 	{
-		// Comment out the following to disable breakpoints (speed-up)
-		blockSize = 1;
+		if (GetState() == CPU_STEPPING)
+			blockSize = 1;
 		Trace();
 	}
 
@@ -654,6 +654,11 @@ const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buf, JitBloc
 				ibuild.EmitExtExceptionCheck(ibuild.EmitIntConst(ops[i].address));
 			}
 
+			if (Core::g_CoreStartupParameter.bEnableDebugging && breakpoints.IsAddressBreakPoint(ops[i].address) && GetState() != CPU_STEPPING)
+			{
+				ibuild.EmitBreakPointCheck(ibuild.EmitIntConst(ops[i].address));
+			}
+			
 			JitILTables::CompileInstruction(ops[i]);
 
 			if (js.memcheck && (opinfo->flags & FL_LOADSTORE))

Source/Core/Core/Src/PowerPC/JitCommon/JitCache.cpp

@@ -417,6 +417,24 @@ bool JitBlock::ContainsAddress(u32 em_address)
 		std::map<pair<u32,u32>, u32>::iterator it1 = block_map.lower_bound(std::make_pair(address, 0)), it2 = it1, it;
 		while (it2 != block_map.end() && it2->first.second < address + length)
 		{
+#ifdef JIT_UNLIMITED_ICACHE
+			JitBlock &b = blocks[it2->second];
+			if (b.originalAddress & JIT_ICACHE_VMEM_BIT)
+			{
+				u32 cacheaddr = b.originalAddress & JIT_ICACHE_MASK;
+				memset(iCacheVMEM + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+			}
+			else if (b.originalAddress & JIT_ICACHE_EXRAM_BIT)
+			{
+				u32 cacheaddr = b.originalAddress & JIT_ICACHEEX_MASK;
+				memset(iCacheEx + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+			}
+			else
+			{
+				u32 cacheaddr = b.originalAddress & JIT_ICACHE_MASK;
+				memset(iCache + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
+			}
+#endif
 			DestroyBlock(it2->second, true);
 			it2++;
 		}