diff --git a/libasm/disasm_str.c b/libasm/disasm_str.c
new file mode 100644
index 0000000..c14e6d5
--- /dev/null
+++ b/libasm/disasm_str.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 2005, 2008 Red Hat, Inc.
+   This file is part of elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2007.
+
+   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 <string.h>
+#include <system.h>
+#include "libasmP.h"
+
+
+struct buffer
+{
+  char *buf;
+  size_t len;
+};
+
+
+static int
+buffer_cb (char *str, size_t len, void *arg)
+{
+  struct buffer *buffer = (struct buffer *) arg;
+
+  if (len > buffer->len)
+    /* Return additional needed space.  */
+    return len - buffer->len;
+
+  buffer->buf = mempcpy (buffer->buf, str, len);
+  buffer->len = len;
+
+  return 0;
+}
+
+
+int
+disasm_str (DisasmCtx_t *ctx, const uint8_t **startp, const uint8_t *end,
+	    GElf_Addr addr, const char *fmt, char **bufp, size_t len,
+	    void *symcbarg)
+{
+  struct buffer buffer = { .buf = *bufp, .len = len };
+
+  int res = INTUSE(disasm_cb) (ctx, startp, end, addr, fmt, buffer_cb, &buffer,
+			       symcbarg);
+  *bufp = buffer.buf;
+  return res;
+}