score: Add RTEMS_ALIAS()

cpukit/score/include/rtems/score/basedefs.h

@@ -179,6 +179,16 @@
   #define RTEMS_PACKED
 #endif
 
+/**
+ * @brief Instructs the compiler to generate an alias to the specified target
+ * function.
+ */
+#if defined(__GNUC__)
+  #define RTEMS_ALIAS( _target ) __attribute__((__alias__(#_target)))
+#else
+  #define RTEMS_ALIAS( _target )
+#endif
+
 /**
  * @brief Instructs the compiler to enforce the specified alignment.
  */