diff --git a/src/eu-search.c b/src/eu-search.c
new file mode 100644
index 0000000..fc31fe8
--- /dev/null
+++ b/src/eu-search.c
@@ -0,0 +1,85 @@
+/* Definitions for thread-safe tsearch/tfind
+   Copyright (C) 2023 Rice University
+   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 "eu-search.h"
+
+void *eu_tsearch (const void *key, search_tree *tree,
+		  int (*compare)(const void *, const void *))
+{
+  rwlock_wrlock (tree->lock);
+  void *ret = tsearch (key, &tree->root, compare);
+  rwlock_unlock (tree->lock);
+
+  return ret;
+}
+
+void *eu_tfind (const void *key, search_tree *tree,
+	        int (*compare)(const void *, const void *))
+{
+  rwlock_rdlock (tree->lock);
+  void *ret = tfind (key, &tree->root, compare);
+  rwlock_unlock (tree->lock);
+
+  return ret;
+}
+
+void *eu_tdelete (const void *key, search_tree *tree,
+		  int (*compare)(const void *, const void *))
+{
+  rwlock_wrlock (tree->lock);
+  void *ret = tdelete (key, &tree->root, compare);
+  rwlock_unlock (tree->lock);
+
+  return ret;
+}
+
+void eu_tdestroy (search_tree *tree, void (*free_node)(void *))
+{
+  rwlock_wrlock (tree->lock);
+
+  tdestroy (tree->root, free_node);
+  tree->root = NULL;
+
+  rwlock_unlock (tree->lock);
+}
+
+void eu_search_tree_init (search_tree *tree)
+{
+  tree->root = NULL;
+  rwlock_init (tree->lock);
+}
+
+void eu_search_tree_fini (search_tree *tree, void (*free_node)(void *))
+{
+  eu_tdestroy (tree, free_node);
+  rwlock_fini (tree->lock);
+}