diff --git a/src/ptrace/_UPT_access_fpreg.c b/src/ptrace/_UPT_access_fpreg.c
index e69de29b..28e08922 100644
--- a/src/ptrace/_UPT_access_fpreg.c
+++ b/src/ptrace/_UPT_access_fpreg.c
@@ -0,0 +1,66 @@
+/* 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.  */
+
+#include "_UPT_internal.h"
+
+int
+_UPT_access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
+		   int write, void *arg)
+{
+  unw_word_t *wp = (unw_word_t *) val;
+  struct UPT_info *ui = arg;
+  pid_t pid = ui->pid;
+  int i;
+
+  if ((unsigned) reg >= sizeof (_UPT_reg_offset) / sizeof (_UPT_reg_offset[0]))
+    return -UNW_EBADREG;
+
+  errno = 0;
+  if (write)
+    for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i)
+      {
+#ifdef HAVE_TTRACE
+#	warning No support for ttrace() yet.
+#else
+	ptrace (PTRACE_POKEUSER, pid, _UPT_reg_offset[reg] + i * sizeof(wp[i]),
+		wp[i]);
+#endif
+	if (errno)
+	  return -UNW_EBADREG;
+      }
+  else
+    for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i)
+      {
+#ifdef HAVE_TTRACE
+#	warning No support for ttrace() yet.
+#else
+	wp[i] = ptrace (PTRACE_PEEKUSER, pid,
+			_UPT_reg_offset[reg] + i * sizeof(wp[i]), 0);
+#endif
+	if (errno)
+	  return -UNW_EBADREG;
+      }
+  return 0;
+}