Refactoring to handle multiple return values.

- Replace use of address + CpuState pair in Thread,
  SpecificImageDebugInfo::CreateStackTrace() with a ReturnValueInfoList.
  Adjust all implementing subclasses and callers accordingly.

- DwarfImageDebugInfo::CreateReturnValue() -> CreateReturnValues().
  Now processes a list of return value information structures rather
  than just a single one. This means we can now handle multiple return
  values in a single statement. This still isn't entirely correct though,
  since, e.g. for functions whose return types fit in a register we need
  to either retrieve them immediately after function return, or store the
  CPU state at that point in time for later use in value retrieval,
  otherwise the return values will all be those of the last called function.

src/apps/debugger/Jamfile

@@ -144,6 +144,7 @@ Application Debugger :
 	FileSourceCode.cpp
 	Image.cpp
 	ImageInfo.cpp
+	ReturnValueInfo.cpp
 	SourceCode.cpp
 	StackFrame.cpp
 	StackFrameValues.cpp
@@ -151,7 +152,6 @@ Application Debugger :
 	StackTrace.cpp
 	Statement.cpp
 	SymbolInfo.cpp
-	UserBreakpoint.cpp
 	Team.cpp
 	TeamMemory.cpp
 	TeamMemoryBlock.cpp
@@ -161,6 +161,7 @@ Application Debugger :
 	Type.cpp
 	TypeComponentPath.cpp
 	TypeLookupConstraints.cpp
+	UserBreakpoint.cpp
 	Variable.cpp
 	Watchpoint.cpp
 

src/apps/debugger/arch/Architecture.cpp

@@ -94,9 +94,8 @@ Architecture::InitRegisterRules(CfaContext& context) const
 status_t
 Architecture::CreateStackTrace(Team* team,
 	ImageDebugInfoProvider* imageInfoProvider, CpuState* cpuState,
-	StackTrace*& _stackTrace, target_addr_t returnFunctionAddress,
-	CpuState* returnFunctionState, int32 maxStackDepth, bool useExistingTrace,
-	bool getFullFrameInfo)
+	StackTrace*& _stackTrace, ReturnValueInfoList* returnValueInfos,
+	int32 maxStackDepth, bool useExistingTrace, bool getFullFrameInfo)
 {
 	BReference<CpuState> cpuStateReference(cpuState);
 
@@ -164,8 +163,8 @@ Architecture::CreateStackTrace(Team* team,
 		if (function != NULL) {
 			status_t error = functionDebugInfo->GetSpecificImageDebugInfo()
 				->CreateFrame(image, function, cpuState, getFullFrameInfo,
-					nextFrame == NULL ? returnFunctionAddress : 0,
-					nextFrame == NULL ? returnFunctionState : 0, frame,
+					nextFrame == NULL
+						? returnValueInfos : NULL, frame,
 					previousCpuState);
 			if (error != B_OK && error != B_UNSUPPORTED)
 				break;
@@ -174,8 +173,7 @@ Architecture::CreateStackTrace(Team* team,
 		// If we have no frame yet, let the architecture create it.
 		if (frame == NULL) {
 			status_t error = CreateStackFrame(image, functionDebugInfo,
-				cpuState, nextFrame == NULL, frame,
-				previousCpuState);
+				cpuState, nextFrame == NULL, frame, previousCpuState);
 			if (error != B_OK)
 				break;
 		}

src/apps/debugger/arch/Architecture.h

@@ -13,6 +13,7 @@
 #include <Referenceable.h>
 #include <Variant.h>
 
+#include "ReturnValueInfo.h"
 #include "Types.h"
 
 
@@ -110,8 +111,7 @@ public:
 									ImageDebugInfoProvider* imageInfoProvider,
 									CpuState* cpuState,
 									StackTrace*& _stackTrace,
-									target_addr_t returnFunctionAddress,
-									CpuState* returnFunctionState,
+									ReturnValueInfoList* returnValueInfos,
 									int32 maxStackDepth = -1,
 									bool useExistingTrace = false,
 									bool getFullFrameInfo = true);

src/apps/debugger/controllers/ThreadHandler.cpp

@@ -253,7 +253,7 @@ ThreadHandler::HandleThreadAction(uint32 action)
 
 	if (stackTrace == NULL && cpuState != NULL) {
 		if (fDebuggerInterface->GetArchitecture()->CreateStackTrace(
-				fThread->GetTeam(), this, cpuState, stackTrace, 0, NULL, 1,
+				fThread->GetTeam(), this, cpuState, stackTrace, NULL, 1,
 				false, false) == B_OK) {
 			stackTraceReference.SetTo(stackTrace, true);
 		}
@@ -484,11 +484,20 @@ ThreadHandler::_DoStepOver(CpuState* cpuState)
 	TRACE_CONTROL("  subroutine call -- installing breakpoint at address "
 		"%#" B_PRIx64 "\n", info.Address() + info.Size());
 
-	fThread->SetExecutedSubroutine(info.TargetAddress());
-	fThread->SetSubroutineCpuState(cpuState);
 	if (_InstallTemporaryBreakpoint(info.Address() + info.Size()) != B_OK)
 		return false;
 
+	ReturnValueInfo* returnInfo = new(std::nothrow) ReturnValueInfo(
+		info.TargetAddress(), cpuState);
+	if (returnInfo == NULL)
+		return false;
+
+	BReference<ReturnValueInfo> returnInfoReference(returnInfo, true);
+
+	if (fThread->AddReturnValueInfo(returnInfo) != B_OK)
+		return false;
+
+	returnInfoReference.Detach();
 	_RunThread(cpuState->InstructionPointer());
 	return true;
 }
@@ -567,8 +576,8 @@ ThreadHandler::_HandleBreakpointHitStep(CpuState* cpuState)
 
 			if (stackTrace == NULL && cpuState != NULL) {
 				if (fDebuggerInterface->GetArchitecture()->CreateStackTrace(
-						fThread->GetTeam(), this, cpuState, stackTrace, 0,
-						NULL, 1, false, false) == B_OK) {
+						fThread->GetTeam(), this, cpuState, stackTrace, NULL,
+						1, false, false) == B_OK) {
 					stackTraceReference.SetTo(stackTrace, true);
 				}
 			}
@@ -608,8 +617,16 @@ ThreadHandler::_HandleBreakpointHitStep(CpuState* cpuState)
 		{
 			// That's the return address, so we're done in theory,
 			// unless we're a recursive function. Check if we've actually
-			// exited the previous stack frame or not.
-			fThread->SetExecutedSubroutine(cpuState->InstructionPointer());
+			// exited the previous stack frame or not
+			ReturnValueInfo* info = new(std::nothrow) ReturnValueInfo(
+				cpuState->InstructionPointer(), cpuState);
+			if (info == NULL)
+				return false;
+			BReference<ReturnValueInfo> infoReference(info, true);
+			if (fThread->AddReturnValueInfo(info) != B_OK)
+				return false;
+
+			infoReference.Detach();
 			target_addr_t framePointer = cpuState->StackFramePointer();
 			bool hasExitedFrame = fDebuggerInterface->GetArchitecture()
 				->StackGrowthDirection() == STACK_GROWTH_DIRECTION_POSITIVE
@@ -654,8 +671,8 @@ ThreadHandler::_HandleSingleStepStep(CpuState* cpuState)
 
 			if (stackTrace == NULL && cpuState != NULL) {
 				if (fDebuggerInterface->GetArchitecture()->CreateStackTrace(
-						fThread->GetTeam(), this, cpuState, stackTrace, 0,
-						NULL, 1, false, false) == B_OK) {
+						fThread->GetTeam(), this, cpuState, stackTrace, NULL,
+						1, false, false) == B_OK) {
 					stackTraceReference.SetTo(stackTrace, true);
 				}
 			}
@@ -686,7 +703,7 @@ ThreadHandler::_HandleSingleStepStep(CpuState* cpuState)
 				BReference<StackTrace> stackTraceReference(stackTrace);
 				if (stackTrace == NULL && cpuState != NULL) {
 					if (fDebuggerInterface->GetArchitecture()->CreateStackTrace(
-							fThread->GetTeam(), this, cpuState, stackTrace, 0,
+							fThread->GetTeam(), this, cpuState, stackTrace,
 							NULL, 1, false, false) == B_OK) {
 						stackTraceReference.SetTo(stackTrace, true);
 					}
@@ -694,8 +711,15 @@ ThreadHandler::_HandleSingleStepStep(CpuState* cpuState)
 
 				if (stackTrace != NULL && stackTrace->FrameAt(0)
 						->FrameAddress() != fPreviousFrameAddress) {
-					fThread->SetExecutedSubroutine(
-						cpuState->InstructionPointer());
+					ReturnValueInfo* info = new(std::nothrow) ReturnValueInfo(
+						cpuState->InstructionPointer(), cpuState);
+					if (info == NULL)
+						return false;
+					BReference<ReturnValueInfo> infoReference(info, true);
+					if (fThread->AddReturnValueInfo(info) != B_OK)
+						return false;
+
+					infoReference.Detach();
 				}
 
 				return false;

src/apps/debugger/debug_info/DebuggerImageDebugInfo.cpp

@@ -68,9 +68,8 @@ DebuggerImageDebugInfo::GetAddressSectionType(target_addr_t address)
 status_t
 DebuggerImageDebugInfo::CreateFrame(Image* image,
 	FunctionInstance* functionInstance, CpuState* cpuState,
-	bool getFullFrameInfo, target_addr_t returnFunctionAddress,
-	CpuState* returnFunctionState, StackFrame*& _previousFrame,
-	CpuState*& _previousCpuState)
+	bool getFullFrameInfo, ReturnValueInfoList* returnValueInfos,
+	StackFrame*& _previousFrame, CpuState*& _previousCpuState)
 {
 	return B_UNSUPPORTED;
 }

src/apps/debugger/debug_info/DebuggerImageDebugInfo.h

@@ -36,8 +36,7 @@ public:
 									FunctionInstance* functionInstance,
 									CpuState* cpuState,
 									bool getFullFrameInfo,
-									target_addr_t returnFunctionAddress,
-									CpuState* returnFunctionState,
+									ReturnValueInfoList* returnValueInfos,
 									StackFrame*& _previousFrame,
 									CpuState*& _previousCpuState);
 	virtual	status_t			GetStatement(FunctionDebugInfo* function,

src/apps/debugger/debug_info/DwarfImageDebugInfo.cpp

@@ -522,9 +522,8 @@ DwarfImageDebugInfo::GetAddressSectionType(target_addr_t address)
 status_t
 DwarfImageDebugInfo::CreateFrame(Image* image,
 	FunctionInstance* functionInstance, CpuState* cpuState,
-	bool getFullFrameInfo, target_addr_t returnFunctionAddress,
-	CpuState* returnFunctionState, StackFrame*& _frame,
-	CpuState*& _previousCpuState)
+	bool getFullFrameInfo, ReturnValueInfoList* returnValueInfos,
+	StackFrame*& _frame, CpuState*& _previousCpuState)
 {
 	DwarfFunctionDebugInfo* function = dynamic_cast<DwarfFunctionDebugInfo*>(
 		functionInstance->GetFunctionDebugInfo());
@@ -674,9 +673,9 @@ DwarfImageDebugInfo::CreateFrame(Image* image,
 			instructionPointer, functionInstance->Address() - fRelocationDelta,
 			subprogramEntry->Variables(), subprogramEntry->Blocks());
 
-		if (returnFunctionAddress != 0) {
-			_CreateReturnValue(returnFunctionAddress, returnFunctionState,
-				image, frame, *stackFrameDebugInfo);
+		if (!returnValueInfos->IsEmpty()) {
+			_CreateReturnValues(returnValueInfos, image, frame,
+				*stackFrameDebugInfo);
 		}
 	}
 
@@ -1087,88 +1086,94 @@ DwarfImageDebugInfo::_CreateLocalVariables(CompilationUnit* unit,
 
 
 status_t
-DwarfImageDebugInfo::_CreateReturnValue(target_addr_t returnFunctionAddress,
-	CpuState* returnFunctionState, Image* image, StackFrame* frame,
-	DwarfStackFrameDebugInfo& factory)
+DwarfImageDebugInfo::_CreateReturnValues(ReturnValueInfoList* returnValueInfos,
+	Image* image, StackFrame* frame, DwarfStackFrameDebugInfo& factory)
 {
-	if (!image->ContainsAddress(returnFunctionAddress)) {
-		// our current image doesn't contain the target function,
-		// locate the one which does.
-		image = image->GetTeam()->ImageByAddress(returnFunctionAddress);
-		if (image == NULL)
-			return B_BAD_VALUE;
-	}
-
-	status_t result = B_OK;
-	ImageDebugInfo* imageInfo = image->GetImageDebugInfo();
-	FunctionInstance* targetFunction;
-	if (returnFunctionAddress >= fPLTSectionStart
-		&& returnFunctionAddress < fPLTSectionEnd) {
-		// if the function in question is position-independent, the call
-		// will actually have taken us to its corresponding PLT slot.
-		// in such a case, look at the disassembled jump to determine
-		// where to find the actual function address.
-		InstructionInfo info;
-		if (fDebuggerInterface->GetArchitecture()->GetInstructionInfo(
-			returnFunctionAddress, info, returnFunctionState) != B_OK) {
-			return B_BAD_VALUE;
+	for (int32 i = 0; i < returnValueInfos->CountItems(); i++) {
+		ReturnValueInfo* valueInfo = returnValueInfos->ItemAt(i);
+		target_addr_t subroutineAddress = valueInfo->SubroutineAddress();
+		CpuState* subroutineState = valueInfo->State();
+		if (!image->ContainsAddress(subroutineAddress)) {
+			// our current image doesn't contain the target function,
+			// locate the one which does.
+			image = image->GetTeam()->ImageByAddress(subroutineAddress);
+			if (image == NULL) {
+				// nothing we can do, try the next entry (if any)
+				continue;
+			}
 		}
 
-		target_size_t addressSize = fDebuggerInterface->GetArchitecture()
-			->AddressSize();
-		ssize_t bytesRead = fDebuggerInterface->ReadMemory(info.TargetAddress(),
-			&returnFunctionAddress, addressSize);
-
-		if (bytesRead != (ssize_t)addressSize)
-			return B_BAD_VALUE;
-	}
-
-
-	targetFunction = imageInfo->FunctionAtAddress(returnFunctionAddress);
-	if (targetFunction != NULL) {
-		DwarfFunctionDebugInfo* targetInfo =
-			dynamic_cast<DwarfFunctionDebugInfo*>(
-				targetFunction->GetFunctionDebugInfo());
-		if (targetInfo != NULL) {
-			DIESubprogram* subProgram = targetInfo->SubprogramEntry();
-			DIEType* returnType = subProgram->ReturnType();
-			if (returnType == NULL) {
-				// check if we have a specification, and if so, if that has
-				// a return type
-				subProgram = dynamic_cast<DIESubprogram*>(subProgram->Specification());
-				if (subProgram != NULL)
-					returnType = subProgram->ReturnType();
-
-				// function doesn't return a value, we're done.
-				if (returnType == NULL)
-					return B_OK;
+		status_t result = B_OK;
+		ImageDebugInfo* imageInfo = image->GetImageDebugInfo();
+		FunctionInstance* targetFunction;
+		if (subroutineAddress >= fPLTSectionStart
+			&& subroutineAddress < fPLTSectionEnd) {
+			// if the function in question is position-independent, the call
+			// will actually have taken us to its corresponding PLT slot.
+			// in such a case, look at the disassembled jump to determine
+			// where to find the actual function address.
+			InstructionInfo info;
+			if (fDebuggerInterface->GetArchitecture()->GetInstructionInfo(
+				subroutineAddress, info, subroutineState) != B_OK) {
+				return B_BAD_VALUE;
 			}
 
-			uint32 byteSize = 0;
-			if (returnType->ByteSize() == NULL) {
-				if (dynamic_cast<DIEAddressingType*>(returnType) != NULL)
-					byteSize = fArchitecture->AddressSize();
-			} else
-				byteSize = returnType->ByteSize()->constant;
+			target_size_t addressSize = fDebuggerInterface->GetArchitecture()
+				->AddressSize();
+			ssize_t bytesRead = fDebuggerInterface->ReadMemory(
+				info.TargetAddress(), &subroutineAddress, addressSize);
 
-			ValueLocation* location;
-			result = fArchitecture->GetReturnAddressLocation(frame,
-				byteSize, location);
-			if (result != B_OK)
-				return result;
+			if (bytesRead != (ssize_t)addressSize)
+				return B_BAD_VALUE;
+		}
 
-			BReference<ValueLocation> locationReference(location, true);
-			Variable* variable = NULL;
-			BReference<FunctionID> idReference(
-				targetFunction->GetFunctionID(), true);
-			result = factory.CreateReturnValue(idReference, returnType,
-				location, variable);
-			if (result != B_OK)
-				return result;
+		targetFunction = imageInfo->FunctionAtAddress(subroutineAddress);
+		if (targetFunction != NULL) {
+			DwarfFunctionDebugInfo* targetInfo =
+				dynamic_cast<DwarfFunctionDebugInfo*>(
+					targetFunction->GetFunctionDebugInfo());
+			if (targetInfo != NULL) {
+				DIESubprogram* subProgram = targetInfo->SubprogramEntry();
+				DIEType* returnType = subProgram->ReturnType();
+				if (returnType == NULL) {
+					// check if we have a specification, and if so, if that has
+					// a return type
+					subProgram = dynamic_cast<DIESubprogram*>(
+						subProgram->Specification());
+					if (subProgram != NULL)
+						returnType = subProgram->ReturnType();
 
-			BReference<Variable> variableReference(variable, true);
-			if (!frame->AddLocalVariable(variable))
-				return B_NO_MEMORY;
+					// function doesn't return a value, we're done.
+					if (returnType == NULL)
+						return B_OK;
+				}
+
+				uint32 byteSize = 0;
+				if (returnType->ByteSize() == NULL) {
+					if (dynamic_cast<DIEAddressingType*>(returnType) != NULL)
+						byteSize = fArchitecture->AddressSize();
+				} else
+					byteSize = returnType->ByteSize()->constant;
+
+				ValueLocation* location;
+				result = fArchitecture->GetReturnAddressLocation(frame,
+					byteSize, location);
+				if (result != B_OK)
+					return result;
+
+				BReference<ValueLocation> locationReference(location, true);
+				Variable* variable = NULL;
+				BReference<FunctionID> idReference(
+					targetFunction->GetFunctionID(), true);
+				result = factory.CreateReturnValue(idReference, returnType,
+					location, variable);
+				if (result != B_OK)
+					return result;
+
+				BReference<Variable> variableReference(variable, true);
+				if (!frame->AddLocalVariable(variable))
+					return B_NO_MEMORY;
+			}
 		}
 	}
 

src/apps/debugger/debug_info/DwarfImageDebugInfo.h

@@ -64,8 +64,7 @@ public:
 									FunctionInstance* functionInstance,
 									CpuState* cpuState,
 									bool getFullFrameInfo,
-									target_addr_t returnFunctionAddress,
-									CpuState* returnFunctionState,
+									ReturnValueInfoList* returnValueInfos,
 									StackFrame*& _frame,
 									CpuState*& _previousCpuState);
 	virtual	status_t			GetStatement(FunctionDebugInfo* function,
@@ -105,9 +104,8 @@ private:
 									const EntryListWrapper& variableEntries,
 									const EntryListWrapper& blockEntries);
 
-			status_t			_CreateReturnValue(
-									target_addr_t returnFunctionAddress,
-									CpuState* returnFunctionState,
+			status_t			_CreateReturnValues(
+									ReturnValueInfoList* returnValueInfos,
 									Image* image,
 									StackFrame* frame,
 									DwarfStackFrameDebugInfo& factory);

src/apps/debugger/debug_info/SpecificImageDebugInfo.h

@@ -10,6 +10,7 @@
 #include <Referenceable.h>
 
 #include "AddressSectionTypes.h"
+#include "ReturnValueInfo.h"
 #include "Types.h"
 
 
@@ -56,8 +57,7 @@ public:
 									FunctionInstance* functionInstance,
 									CpuState* cpuState,
 									bool getFullFrameInfo,
-									target_addr_t returnFunctionAddress,
-									CpuState* returnFunctionState,
+									ReturnValueInfoList* returnValueInfos,
 									StackFrame*& _Frame,
 									CpuState*& _previousCpuState) = 0;
 										// returns reference to previous frame

src/apps/debugger/jobs/GetStackTraceJob.cpp

@@ -58,9 +58,7 @@ GetStackTraceJob::Do()
 	// get the stack trace
 	StackTrace* stackTrace;
 	status_t error = fArchitecture->CreateStackTrace(fThread->GetTeam(), this,
-		fCpuState, stackTrace, fThread->ExecutedSubroutine()
-			? fThread->SubroutineAddress() : 0, fThread->ExecutedSubroutine()
-			? fThread->SubroutineCpuState() : NULL);
+		fCpuState, stackTrace, fThread->ReturnValueInfos());
 	if (error != B_OK)
 		return error;
 	BReference<StackTrace> stackTraceReference(stackTrace, true);

src/apps/debugger/model/Thread.cpp

@@ -18,8 +18,7 @@ Thread::Thread(Team* team, thread_id threadID)
 	fID(threadID),
 	fState(THREAD_STATE_UNKNOWN),
 	fExecutedSubroutine(false),
-	fSubroutineAddress(0),
-	fSubroutineState(NULL),
+	fReturnValueInfos(NULL),
 	fStoppedReason(THREAD_STOPPED_UNKNOWN),
 	fCpuState(NULL),
 	fStackTrace(NULL)
@@ -33,14 +32,19 @@ Thread::~Thread()
 		fCpuState->ReleaseReference();
 	if (fStackTrace != NULL)
 		fStackTrace->ReleaseReference();
-	if (fSubroutineState != NULL)
-		fSubroutineState->ReleaseReference();
+
+	ClearReturnValueInfos();
+	delete fReturnValueInfos;
 }
 
 
 status_t
 Thread::Init()
 {
+	fReturnValueInfos = new(std::nothrow) ReturnValueInfoList;
+	if (fReturnValueInfos == NULL)
+		return B_NO_MEMORY;
+
 	return B_OK;
 }
 
@@ -74,7 +78,7 @@ Thread::SetState(uint32 state, uint32 reason, const BString& info)
 		SetCpuState(NULL);
 		SetStackTrace(NULL);
 		fExecutedSubroutine = false;
-		fSubroutineAddress = 0;
+		ClearReturnValueInfos();
 	}
 
 	fTeam->NotifyThreadStateChanged(this);
@@ -117,20 +121,23 @@ Thread::SetStackTrace(StackTrace* trace)
 }
 
 
-void
-Thread::SetExecutedSubroutine(target_addr_t address)
+status_t
+Thread::AddReturnValueInfo(ReturnValueInfo* info)
 {
+	if (!fReturnValueInfos->AddItem(info))
+		return B_NO_MEMORY;
+
+	info->AcquireReference();
 	fExecutedSubroutine = true;
-	fSubroutineAddress = address;
+	return B_OK;
 }
 
 
 void
-Thread::SetSubroutineCpuState(CpuState* state)
+Thread::ClearReturnValueInfos()
 {
-	if (fSubroutineState != NULL)
-		fSubroutineState->ReleaseReference();
+	for (int32 i = 0; i < fReturnValueInfos->CountItems(); i++)
+		fReturnValueInfos->ItemAt(i)->ReleaseReference();
 
-	fSubroutineState = state;
-	fSubroutineState->AcquireReference();
+	fReturnValueInfos->MakeEmpty();
 }

src/apps/debugger/model/Thread.h

@@ -11,6 +11,7 @@
 #include <Referenceable.h>
 #include <util/DoublyLinkedList.h>
 
+#include "ReturnValueInfo.h"
 #include "types/Types.h"
 
 
@@ -69,14 +70,11 @@ public:
 			StackTrace*			GetStackTrace() const	{ return fStackTrace; }
 			void				SetStackTrace(StackTrace* trace);
 
-			bool				ExecutedSubroutine() const
-									{ return fExecutedSubroutine; }
-			target_addr_t		SubroutineAddress() const
-									{ return fSubroutineAddress; }
-			void				SetExecutedSubroutine(target_addr_t address);
-			CpuState*			SubroutineCpuState() const
-									{ return fSubroutineState; }
-			void				SetSubroutineCpuState(CpuState* state);
+			ReturnValueInfoList*
+								ReturnValueInfos() const
+								{ return fReturnValueInfos; }
+			status_t			AddReturnValueInfo(ReturnValueInfo* info);
+			void				ClearReturnValueInfos();
 
 private:
 			Team*				fTeam;
@@ -84,8 +82,8 @@ private:
 			BString				fName;
 			uint32				fState;
 			bool				fExecutedSubroutine;
-			target_addr_t		fSubroutineAddress;
-			CpuState*			fSubroutineState;
+			ReturnValueInfoList*
+								fReturnValueInfos;
 			uint32				fStoppedReason;
 			BString				fStoppedReasonInfo;
 			CpuState*			fCpuState;