diff --git a/tools/lsd/hash.h b/tools/lsd/hash.h
new file mode 100644
index 0000000..af29b9e
--- /dev/null
+++ b/tools/lsd/hash.h
@@ -0,0 +1,14 @@
+#ifndef HASH_H
+#define HASH_H
+
+#include <common.h>
+#include <libelf.h>
+#include <gelf.h>
+
+int hash_lookup(Elf *elf, 
+                Elf_Data *hash,
+                Elf_Data *symtab,
+                Elf_Data *symstr,
+                const char *symname);
+
+#endif/*HASH_H*/