diff --git a/src/ptrace/_UPT_internal.h b/src/ptrace/_UPT_internal.h
index e69de29b..7da9bf04 100644
--- a/src/ptrace/_UPT_internal.h
+++ b/src/ptrace/_UPT_internal.h
@@ -0,0 +1,58 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2003 Hewlett-Packard Co
+	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#ifndef _UPT_internal_h
+#define _UPT_internal_h
+
+#include <errno.h>
+#include <libunwind-ptrace.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sys/ptrace.h>
+
+#include "internal.h"
+#include "tdep.h"
+
+struct UPT_info
+  {
+    pid_t pid;		/* the process-id of the child we're unwinding */
+    struct elf_image ei;
+    unw_dyn_info_t di_cache;
+#if UNW_TARGET_IA64
+    unw_dyn_info_t ktab;
+#endif
+  };
+
+extern int _UPT_reg_offset[UNW_REG_LAST + 1];
+
+extern unw_dyn_info_t *_UPTi_find_unwind_table (struct UPT_info *ui,
+						unw_addr_space_t as,
+						char *path,
+						unw_word_t segbase,
+						unw_word_t mapoff);
+
+#endif /* _UPT_internal_h */