First implementation of Darwin Platform. It is rich enough to generate

a hello world executable from atoms.  There is still much to be flushed out.
Added one test case, test/darwin/hello-world.objtxt, which exercises the
darwin platform.

Added -platform option to lld-core tool to dynamically select platform.

llvm-svn: 154242

1 files changed, 3 insertions, 0 deletions

diff --git a/lld/lib/Core/File.cpp b/lld/lib/Core/File.cpp
index ffca9cbc461..70ce886919a 100644
--- a/lld/lib/Core/File.cpp
+++ b/lld/lib/Core/File.cpp
@@ -18,5 +18,8 @@ StringRef File::translationUnitSource() const {
   return StringRef();
 }
 
+const Atom *File::entryPoint() const {
+  return nullptr;
+}
 
 }