GTE: Stub and register read/write function

src/pse/gte.h

@@ -0,0 +1,32 @@
+#pragma once
+#include "common/state_wrapper.h"
+#include "gte_types.h"
+
+namespace GTE {
+
+class Core
+{
+public:
+  Core();
+  ~Core();
+
+  void Initialize();
+  void Reset();
+  bool DoState(StateWrapper& sw);
+
+  u32 ReadRegister(u32 index) const { return m_regs.r32[index]; }
+  void WriteRegister(u32 index, u32 value) { m_regs.r32[index] = value; }
+
+  u32 ReadDataRegister(u32 index) const { return m_regs.r32[index]; }
+  void WriteDataRegister(u32 index, u32 value) { m_regs.r32[index] = value; }
+
+  u32 ReadControlRegister(u32 index) const { return m_regs.r32[index + 32]; }
+  void WriteControlRegister(u32 index, u32 value) { m_regs.r32[index + 32] = value; }
+
+  void ExecuteInstruction(Instruction inst);
+
+private:
+  Regs m_regs = {};
+};
+
+} // namespace GTE