1 files changed, 96 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/go/gofrontend/unsafe.cc b/gcc-4.9/gcc/go/gofrontend/unsafe.cc
new file mode 100644
index 000000000..e7c61f023
--- /dev/null
+++ b/gcc-4.9/gcc/go/gofrontend/unsafe.cc
@@ -0,0 +1,96 @@
+// unsafe.cc -- Go frontend builtin unsafe package.
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "go-system.h"
+
+#include "go-c.h"
+#include "types.h"
+#include "gogo.h"
+
+// Set up the builtin unsafe package.  This should probably be driven
+// by a table.
+
+void
+Gogo::import_unsafe(const std::string& local_name, bool is_local_name_exported,
+		    Location location)
+{
+  Location bloc = Linemap::predeclared_location();
+
+  bool add_to_globals;
+  Package* package = this->add_imported_package("unsafe", local_name,
+						is_local_name_exported,
+						"unsafe", location,
+						&add_to_globals);
+
+  if (package == NULL)
+    {
+      go_assert(saw_errors());
+      return;
+    }
+
+  package->set_location(location);
+  package->set_is_imported();
+
+  this->imports_.insert(std::make_pair("unsafe", package));
+
+  Bindings* bindings = package->bindings();
+
+  // The type may have already been created by an import.
+  Named_object* no = package->bindings()->lookup("Pointer");
+  if (no == NULL)
+    {
+      Type* type = Type::make_pointer_type(Type::make_void_type());
+      no = bindings->add_type("Pointer", package, type,
+			      Linemap::unknown_location());
+    }
+  else
+    {
+      go_assert(no->package() == package);
+      go_assert(no->is_type());
+      go_assert(no->type_value()->is_unsafe_pointer_type());
+      no->type_value()->set_is_visible();
+    }
+  Named_type* pointer_type = no->type_value();
+  if (add_to_globals)
+    this->add_named_type(pointer_type);
+
+  Type* uintptr_type = Type::lookup_integer_type("uintptr");
+
+  // Sizeof.
+  Typed_identifier_list* results = new Typed_identifier_list;
+  results->push_back(Typed_identifier("", uintptr_type, bloc));
+  Function_type* fntype = Type::make_function_type(NULL, NULL, results, bloc);
+  fntype->set_is_builtin();
+  no = bindings->add_function_declaration("Sizeof", package, fntype, bloc);
+  if (add_to_globals)
+    this->add_named_object(no);
+
+  // Offsetof.
+  results = new Typed_identifier_list;
+  results->push_back(Typed_identifier("", uintptr_type, bloc));
+  fntype = Type::make_function_type(NULL, NULL, results, bloc);
+  fntype->set_is_varargs();
+  fntype->set_is_builtin();
+  no = bindings->add_function_declaration("Offsetof", package, fntype, bloc);
+  if (add_to_globals)
+    this->add_named_object(no);
+
+  // Alignof.
+  results = new Typed_identifier_list;
+  results->push_back(Typed_identifier("", uintptr_type, bloc));
+  fntype = Type::make_function_type(NULL, NULL, results, bloc);
+  fntype->set_is_varargs();
+  fntype->set_is_builtin();
+  no = bindings->add_function_declaration("Alignof", package, fntype, bloc);
+  if (add_to_globals)
+    this->add_named_object(no);
+
+  if (!this->imported_unsafe_)
+    {
+      go_imported_unsafe();
+      this->imported_unsafe_ = true;
+    }
+}