diff --git a/src/internal/apimagic_driver_impl.h b/src/internal/apimagic_driver_impl.h
index 2e42ce4..6d5ce02 100644
--- a/src/internal/apimagic_driver_impl.h
+++ b/src/internal/apimagic_driver_impl.h
@@ -50,4 +50,18 @@ struct amgc_unit_ctx_impl {
 	struct compilation_unit_t	ccunit;
 };
 
+
+static inline struct amgc_driver_ctx_impl * amgc_get_driver_ictx(
+	const struct amgc_driver_ctx * dctx)
+{
+        uintptr_t addr;
+
+        if (dctx) {
+                addr = (uintptr_t)dctx - offsetof(struct amgc_driver_ctx_impl,ctx);
+                return (struct amgc_driver_ctx_impl *)addr;
+        }
+
+        return 0;
+}
+
 #endif