1 files changed, 68 insertions, 0 deletions

diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
new file mode 100644
index 000000000..eee2f6240
--- /dev/null
+++ b/src/core/arm/arm_interface.h
@@ -0,0 +1,68 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.  
+
+#pragma once
+
+#include "common.h"
+#include "common_types.h"
+
+/// Generic ARM11 CPU interface
+class ARM_Interface {
+public:
+    ARM_Interface() {
+        num_instructions_ = 0;
+    }
+
+    ~ARM_Interface() {
+    }
+
+    /// Step CPU by one instruction
+    void Step() {
+        ExecuteInstruction();
+        num_instructions_++;
+    }
+ 
+    /**
+     * Set the Program Counter to an address
+     * @param addr Address to set PC to
+     */
+    virtual void SetPC(u32 addr) = 0;
+
+    /*
+     * Get the current Program Counter
+     * @return Returns current PC
+     */
+    virtual u32 PC() = 0;
+
+    /**
+     * Get an ARM register
+     * @param index Register index (0-15)
+     * @return Returns the value in the register
+     */
+    virtual u32 Reg(int index) = 0;
+
+    /**
+     * Get the current CPSR register
+     * @return Returns the value of the CPSR register
+     */
+    virtual u32 CPSR() = 0;  
+
+    /**
+     * Returns the number of clock ticks since the last rese
+     * @return Returns number of clock ticks
+     */
+    virtual u64 GetTicks() = 0;
+
+    /// Getter for num_instructions_
+    u64 num_instructions() { return num_instructions_; }
+
+private:
+    
+    /// Execture next instruction
+    virtual void ExecuteInstruction() = 0;
+
+    u64 num_instructions_;  ///< Number of instructions executed
+
+    DISALLOW_COPY_AND_ASSIGN(ARM_Interface);
+};