Add explictly exported atoms and export R_*_COPY'ed atoms.

llvm-svn: 194278
diff --git a/lld/lib/ReaderWriter/Native/ReaderNative.cpp b/lld/lib/ReaderWriter/Native/ReaderNative.cpp
index e614637..d110243 100644
--- a/lld/lib/ReaderWriter/Native/ReaderNative.cpp
+++ b/lld/lib/ReaderWriter/Native/ReaderNative.cpp
@@ -91,6 +91,10 @@
      return (DefinedAtom::DeadStripKind)(attributes().deadStrip);
   }
 
+  virtual DynamicExport dynamicExport() const {
+    return (DynamicExport)attributes().dynamicExport;
+  }
+
   virtual DefinedAtom::ContentPermissions permissions() const {
      return (DefinedAtom::ContentPermissions)(attributes().permissions);
   }