Squashed 'third_party/elfutils/' content from commit 555e15e

Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libdwfl/dwfl_end.c b/libdwfl/dwfl_end.c
new file mode 100644
index 0000000..74ee9e0
--- /dev/null
+++ b/libdwfl/dwfl_end.c
@@ -0,0 +1,66 @@
+/* Finish a session using libdwfl.
+   Copyright (C) 2005, 2008, 2012-2013, 2015 Red Hat, Inc.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   elfutils is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "libdwflP.h"
+#include <unistd.h>
+
+void
+dwfl_end (Dwfl *dwfl)
+{
+  if (dwfl == NULL)
+    return;
+
+  if (dwfl->process)
+    __libdwfl_process_free (dwfl->process);
+
+  free (dwfl->lookup_addr);
+  free (dwfl->lookup_module);
+  free (dwfl->lookup_segndx);
+
+  Dwfl_Module *next = dwfl->modulelist;
+  while (next != NULL)
+    {
+      Dwfl_Module *dead = next;
+      next = dead->next;
+      __libdwfl_module_free (dead);
+    }
+
+  if (dwfl->user_core != NULL)
+    {
+      free (dwfl->user_core->executable_for_core);
+      elf_end (dwfl->user_core->core);
+      if (dwfl->user_core->fd != -1)
+	close (dwfl->user_core->fd);
+      free (dwfl->user_core);
+    }
+  free (dwfl);
+}