1 files changed, 95 insertions, 0 deletions
diff --git a/libdw/dwarf_getscopes_die.c b/libdw/dwarf_getscopes_die.c
new file mode 100644
index 00000000..07fb9b00
--- /dev/null
+++ b/libdw/dwarf_getscopes_die.c
@@ -0,0 +1,95 @@
+/* Return scope DIEs containing given DIE.
+   Copyright (C) 2005 Red Hat, Inc.
+   This file is part of Red Hat elfutils.
+
+   Red Hat elfutils is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by the
+   Free Software Foundation; version 2 of the License.
+
+   Red Hat 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 a copy of the GNU General Public License along
+   with Red Hat elfutils; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
+
+   In addition, as a special exception, Red Hat, Inc. gives You the
+   additional right to link the code of Red Hat elfutils with code licensed
+   under any Open Source Initiative certified open source license
+   (http://www.opensource.org/licenses/index.php) which requires the
+   distribution of source code with any binary distribution and to
+   distribute linked combinations of the two.  Non-GPL Code permitted under
+   this exception must only link to the code of Red Hat elfutils through
+   those well defined interfaces identified in the file named EXCEPTION
+   found in the source code files (the "Approved Interfaces").  The files
+   of Non-GPL Code may instantiate templates or use macros or inline
+   functions from the Approved Interfaces without causing the resulting
+   work to be covered by the GNU General Public License.  Only Red Hat,
+   Inc. may make changes or additions to the list of Approved Interfaces.
+   Red Hat's grant of this exception is conditioned upon your not adding
+   any new exceptions.  If you wish to add a new Approved Interface or
+   exception, please contact Red Hat.  You must obey the GNU General Public
+   License in all respects for all of the Red Hat elfutils code and other
+   code used in conjunction with Red Hat elfutils except the Non-GPL Code
+   covered by this exception.  If you modify this file, you may extend this
+   exception to your version of the file, but you are not obligated to do
+   so.  If you do not wish to provide this exception without modification,
+   you must delete this exception statement from your version and license
+   this file solely under the GPL without exception.
+
+   Red Hat elfutils is an included package of the Open Invention Network.
+   An included package of the Open Invention Network is a package for which
+   Open Invention Network licensees cross-license their patents.  No patent
+   license is granted, either expressly or impliedly, by designation as an
+   included package.  Should you wish to participate in the Open Invention
+   Network licensing program, please visit www.openinventionnetwork.com
+   <http://www.openinventionnetwork.com>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include "libdwP.h"
+#include <assert.h>
+#include <stdlib.h>
+
+static int
+scope_visitor (unsigned int depth, struct Dwarf_Die_Chain *die, void *arg)
+{
+  if (die->die.addr != *(void **) arg)
+    return 0;
+
+  Dwarf_Die *scopes = malloc (depth * sizeof scopes[0]);
+  if (scopes == NULL)
+    {
+      __libdw_seterrno (DWARF_E_NOMEM);
+      return -1;
+    }
+
+  unsigned int i = 0;
+  do
+    {
+      scopes[i++] = die->die;
+      die = die->parent;
+    }
+  while (die != NULL);
+  assert (i == depth);
+
+  *(void **) arg = scopes;
+  return depth;
+}
+
+int
+dwarf_getscopes_die (Dwarf_Die *die, Dwarf_Die **scopes)
+{
+  if (die == NULL)
+    return -1;
+
+  struct Dwarf_Die_Chain cu = { .die = CUDIE (die->cu), .parent = NULL };
+  void *info = die->addr;
+  int result = __libdw_visit_scopes (1, &cu, &scope_visitor, NULL, &info);
+  if (result > 0)
+    *scopes = info;
+  return result;
+}