diff --git a/libasm/asm_fill.c b/libasm/asm_fill.c
new file mode 100644
index 0000000..62d9d73
--- /dev/null
+++ b/libasm/asm_fill.c
@@ -0,0 +1,74 @@
+/* Determine fill pattern for a section.
+   Copyright (C) 2002 Red Hat, Inc.
+   This file is part of elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   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 <stdlib.h>
+#include <string.h>
+
+#include <libasmP.h>
+#include <system.h>
+
+
+int
+asm_fill (AsmScn_t *asmscn, void *bytes, size_t len)
+{
+  struct FillPattern *pattern;
+  struct FillPattern *old_pattern;
+
+  if (asmscn == NULL)
+    /* Some earlier error.  */
+    return -1;
+
+  if (bytes == NULL)
+    /* Use the default pattern.  */
+    pattern = (struct FillPattern *) __libasm_default_pattern;
+  else
+    {
+      /* Allocate appropriate memory.  */
+      pattern = (struct FillPattern *) malloc (sizeof (struct FillPattern)
+					       + len);
+      if (pattern == NULL)
+	return -1;
+
+      pattern->len = len;
+      memcpy (pattern->bytes, bytes, len);
+    }
+
+  old_pattern = asmscn->pattern;
+  asmscn->pattern = pattern;
+
+  /* Free the old data structure if we have allocated it.  */
+  if (old_pattern != __libasm_default_pattern)
+    free (old_pattern);
+
+  return 0;
+}