Fix up debugger stepping

pcsx2/Interpreter.cpp

@@ -60,7 +60,7 @@ void intBreakpoint(bool memcheck)
 	}
 
 	CBreakPoints::SetBreakpointTriggered(true);
-	GetCoreThread().PauseSelf();
+	GetCoreThread().PauseSelfDebug();
 	throw Exception::ExitCpuExecute();
 }
 

pcsx2/System/SysThreadBase.cpp

@@ -168,6 +168,21 @@ void SysThreadBase::PauseSelf()
 	}
 }
 
+void SysThreadBase::PauseSelfDebug()
+{
+	if (!IsSelf() || !IsRunning()) return;
+
+	{
+		ScopedLock locker(m_ExecModeMutex);
+
+		if (m_ExecMode == ExecMode_Opened)
+			m_ExecMode = ExecMode_Pausing;
+
+		OnPauseDebug();
+		m_sem_event.Post();
+	}
+}
+
 // Resumes the core execution state, or does nothing is the core is already running.  If
 // settings were changed, resets will be performed as needed and emulation state resumed from
 // memory savestates.

pcsx2/System/SysThreads.h

@@ -114,6 +114,7 @@ public:
 	virtual void Resume();
 	virtual void Pause(bool debug = false);
 	virtual void PauseSelf();
+	virtual void PauseSelfDebug();
 
 protected:
 	virtual void OnStart();

pcsx2/gui/Debugger/DisassemblyDialog.cpp

@@ -611,6 +611,7 @@ void DisassemblyDialog::setDebugMode(bool debugMode, bool switchPC)
 
 		if (debugMode)
 		{
+				if (!CBreakPoints::GetBreakpointTriggered())
 				{
 					wxBusyInfo wait("Please wait, Reading ELF functions");
 					reset();

pcsx2/x86/ix86-32/iR5900-32.cpp

@@ -1148,7 +1148,7 @@ void dynarecCheckBreakpoint()
 		return;
 
 	CBreakPoints::SetBreakpointTriggered(true);
-	GetCoreThread().PauseSelf();
+	GetCoreThread().PauseSelfDebug();
 	recExitExecution();
 }
 
@@ -1159,7 +1159,7 @@ void dynarecMemcheck()
 		return;
 
 	CBreakPoints::SetBreakpointTriggered(true);
-	GetCoreThread().PauseSelf();
+	GetCoreThread().PauseSelfDebug();
 	recExitExecution();
 }