-Add lq/sq preview

-fix potential memory access exceptions
-prevent the disassembly from changing positions when a breakpoint is toggled
-only use the status bar text from the current cpu

pcsx2/DebugTools/DebugInterface.cpp

@@ -27,6 +27,10 @@
 #include "../IopMem.h"
 #include "SymbolMap.h"
 
+#ifdef _WIN32
+#include <Windows.h>
+#endif
+
 extern AppCoreThread CoreThread;
 
 R5900DebugInterface r5900Debug;
@@ -204,25 +208,48 @@ bool DebugInterface::parseExpression(PostfixExpression& exp, u64& dest)
 // R5900DebugInterface
 //
 
-u32 R5900DebugInterface::read8(u32 address)
+u32 R5900DebugInterface::readMemory(u32 address, u32 size)
 {
 	if (!isValidAddress(address))
 		return -1;
-	return memRead8(address);
+	
+	// TODO: Add linux variant of the following __try/__except
+#if defined(_MSC_VER)
+	__try
+	{
+#endif
+		switch (size)
+		{
+		case 1:
+			return memRead8(address);
+		case 2:
+			return memRead16(address);
+		case 4:
+			return memRead32(address);
+		default:
+			return -1;
+		}
+#if defined(_MSC_VER)
+	} __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
+	{
+		return -1;
+	}
+#endif
+}
+
+u32 R5900DebugInterface::read8(u32 address)
+{
+	return readMemory(address,1);
 }
 
 u32 R5900DebugInterface::read16(u32 address)
 {
-	if (!isValidAddress(address))
+	return readMemory(address,2);
-		return -1;
-	return memRead16(address);
 }
 
 u32 R5900DebugInterface::read32(u32 address)
 {
-	if (!isValidAddress(address))
+	return readMemory(address,4);
-		return -1;
-	return memRead32(address);
 }
 
 u64 R5900DebugInterface::read64(u32 address)
@@ -231,7 +258,19 @@ u64 R5900DebugInterface::read64(u32 address)
 		return -1;
 
 	u64 result;
-	memRead64(address,result);
+	
+	// TODO: Add linux variant of the following __try/__except
+#if defined(_MSC_VER)
+	__try {
+#endif
+		memRead64(address,result);
+#if defined(_MSC_VER)
+	} __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
+	{
+		result = -1;
+	}
+#endif
+
 	return result;
 }
 
@@ -240,8 +279,20 @@ u128 R5900DebugInterface::read128(u32 address)
 	if (!isValidAddress(address))
 		return u128::From32(-1);
 
-	u128 result;
+	__aligned16 u128 result;
-	memRead128(address,result);
+	
+	// TODO: Add linux variant of the following __try/__except
+#if defined(_MSC_VER)
+	__try {
+#endif
+		memRead128(address,result);
+#if defined(_MSC_VER)
+	} __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
+	{
+		result.hi = result.lo = -1;
+	}
+#endif
+
 	return result;
 }
 

pcsx2/DebugTools/DebugInterface.h

@@ -84,6 +84,8 @@ public:
 	virtual std::string disasm(u32 address);
 	virtual bool isValidAddress(u32 address);
 	virtual u32 getCycles();
+private:
+	u32 readMemory(u32 address, u32 size);
 };
 
 

pcsx2/DebugTools/MIPSAnalyst.cpp

@@ -337,6 +337,9 @@ namespace MIPSAnalyst
 		case 0x2C:		// sdl
 			size = 8;
 			off = -7;
+		case 0x1E:		// lq
+		case 0x1F:		// sq
+			size = 16;
 			break;
 		}
 

pcsx2/gui/AppMain.cpp

@@ -757,14 +757,14 @@ void Pcsx2App::enterDebugMode()
 {
 	DisassemblyDialog* dlg = GetDisassemblyPtr();
 	if (dlg)
-		dlg->setDebugMode(true);
+		dlg->setDebugMode(true,false);
 }
 	
 void Pcsx2App::leaveDebugMode()
 {
 	DisassemblyDialog* dlg = GetDisassemblyPtr();
 	if (dlg)
-		dlg->setDebugMode(false);
+		dlg->setDebugMode(false,false);
 }
 
 void Pcsx2App::resetDebugger()

pcsx2/gui/Debugger/CtrlDisassemblyView.cpp

@@ -811,7 +811,7 @@ void CtrlDisassemblyView::updateStatusBarText()
 					}
 				case 16:
 					{
-						u128 data = cpu->read128(line.info.dataAddress);
+						__aligned16 u128 data = cpu->read128(line.info.dataAddress);
 						sprintf(text,"[%08X] = %016llX%016llX",line.info.dataAddress,data._u64[1],data._u64[0]);
 						break;
 					}

pcsx2/gui/Debugger/DisassemblyDialog.cpp

@@ -170,7 +170,7 @@ DisassemblyDialog::DisassemblyDialog(wxWindow* parent):
 	SetMinSize(wxSize(1000,600));
 	panel->GetSizer()->Fit(this);
 
-	setDebugMode(true);
+	setDebugMode(true,true);
 }
 
 #ifdef WIN32
@@ -212,8 +212,10 @@ void DisassemblyDialog::onBreakRunClicked(wxCommandEvent& evt)
 		// If the current PC is on a breakpoint, the user doesn't want to do nothing.
 		CBreakPoints::SetSkipFirst(r5900Debug.getPC());
 		r5900Debug.resumeCpu();
-	} else
+	} else {
 		r5900Debug.pauseCpu();
+		gotoPc();
+	}
 }
 
 void DisassemblyDialog::onStepOverClicked(wxCommandEvent& evt)
@@ -352,7 +354,9 @@ void DisassemblyDialog::onDebuggerEvent(wxCommandEvent& evt)
 	wxEventType type = evt.GetEventType();
 	if (type == debEVT_SETSTATUSBARTEXT)
 	{
-		GetStatusBar()->SetLabel(evt.GetString());
+		CtrlDisassemblyView* view = reinterpret_cast<CtrlDisassemblyView*>(evt.GetEventObject());
+		if (view != NULL && view == currentCpu->getDisassembly())
+			GetStatusBar()->SetLabel(evt.GetString());
 	} else if (type == debEVT_UPDATELAYOUT)
 	{
 		if (currentCpu != NULL)
@@ -420,7 +424,13 @@ void DisassemblyDialog::reset()
 	iopTab->getDisassembly()->clearFunctions();
 };
 
-void DisassemblyDialog::setDebugMode(bool debugMode)
+void DisassemblyDialog::gotoPc()
+{
+	eeTab->getDisassembly()->gotoPc();
+	iopTab->getDisassembly()->gotoPc();
+}
+
+void DisassemblyDialog::setDebugMode(bool debugMode, bool switchPC)
 {
 	bool running = r5900Debug.isAlive();
 	
@@ -437,8 +447,8 @@ void DisassemblyDialog::setDebugMode(bool debugMode)
 			stepOverButton->Enable(true);
 			stepIntoButton->Enable(true);
 
-			eeTab->getDisassembly()->gotoPc();
+			if (switchPC || CBreakPoints::GetBreakpointTriggered())
-			iopTab->getDisassembly()->gotoPc();
+				gotoPc();
 			
 			if (CBreakPoints::GetBreakpointTriggered())
 			{

pcsx2/gui/Debugger/DisassemblyDialog.h

@@ -62,7 +62,7 @@ public:
 	
 	void update();
 	void reset();
-	void setDebugMode(bool debugMode);
+	void setDebugMode(bool debugMode, bool switchPC);
 	
 #ifdef WIN32
 	WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
@@ -79,6 +79,7 @@ protected:
 	void onClose(wxCloseEvent& evt);
 	void stepOver();
 	void stepInto();
+	void gotoPc();
 private:
 	CpuTabPage* eeTab;
 	CpuTabPage* iopTab;