o add bsnes

bsnes/lib/nall/moduloarray.hpp

@@ -0,0 +1,36 @@
+#ifndef NALL_MODULO_HPP
+#define NALL_MODULO_HPP
+
+#include <nall/new.hpp>
+
+namespace nall {
+  template<typename T, int size> class modulo_array {
+  public:
+    inline T operator[](int index) const {
+      return buffer[size + index];
+    }
+
+    inline T read(int index) const {
+      return buffer[size + index];
+    }
+
+    inline void write(unsigned index, const T value) {
+      buffer[index] =
+      buffer[index + size] =
+      buffer[index + size + size] = value;
+    }
+
+    modulo_array() {
+      buffer = new(zeromemory) T[size * 3];
+    }
+
+    ~modulo_array() {
+      delete[] buffer;
+    }
+
+  private:
+    T *buffer;
+  };
+}
+
+#endif