1 files changed, 80 insertions, 0 deletions
diff --git a/libdw/dwarf_getabbrevattr.c b/libdw/dwarf_getabbrevattr.c
new file mode 100644
index 00000000..574467ce
--- /dev/null
+++ b/libdw/dwarf_getabbrevattr.c
@@ -0,0 +1,80 @@
+/* Get specific attribute of abbreviation.
+   Copyright (C) 2003, 2004, 2005, 2014 Red Hat, Inc.
+   This file is part of elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   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 <assert.h>
+#include <dwarf.h>
+#include "libdwP.h"
+
+
+int
+dwarf_getabbrevattr (abbrev, idx, namep, formp, offsetp)
+     Dwarf_Abbrev *abbrev;
+     size_t idx;
+     unsigned int *namep;
+     unsigned int *formp;
+     Dwarf_Off *offsetp;
+{
+  if (abbrev == NULL)
+    return -1;
+
+  size_t cnt = 0;
+  const unsigned char *attrp = abbrev->attrp;
+  const unsigned char *start_attrp;
+  unsigned int name;
+  unsigned int form;
+
+  do
+    {
+      start_attrp = attrp;
+
+      /* Attribute code and form are encoded as ULEB128 values.i
+         XXX We have no way to bounds check.  */
+      get_uleb128 (name, attrp, attrp + len_leb128 (name));
+      get_uleb128 (form, attrp, attrp + len_leb128 (form));
+
+      /* If both values are zero the index is out of range.  */
+      if (name == 0 && form == 0)
+	return -1;
+    }
+  while (cnt++ < idx);
+
+  /* Store the result if requested.  */
+  if (namep != NULL)
+    *namep = name;
+  if (formp != NULL)
+    *formp = form;
+  if (offsetp != NULL)
+    *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset;
+
+  return 0;
+}