- added an interface layer for ARM cores

- cleaned up core.cpp a bit

src/core/src/arm/arm_interface.h

@@ -0,0 +1,47 @@
+/**
+ * Copyright (C) 2013 Citrus Emulator
+ *
+ * @file    arm_interface.h
+ * @author  bunnei 
+ * @date    2014-04-04
+ * @brief   Generic ARM CPU core interface
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include "common_types.h"
+
+/// Generic ARM11 CPU interface
+class ARM_Interface {
+public:
+    ARM_Interface() {
+    }
+
+    ~ARM_Interface() {
+    }
+
+    virtual void ExecuteInstruction() = 0;
+    
+    virtual void SetPC(u32 pc) = 0;
+
+    virtual u32 PC() = 0;
+
+    virtual u32 Reg(int index) = 0;
+
+    virtual u32 CPSR() = 0;
+};