diff -r 000000000000 -r 6474c204b198 security/nss/lib/freebl/mpi/mpi_amd64.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/nss/lib/freebl/mpi/mpi_amd64.c	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MPI_AMD64
+#error This file only works on AMD64 platforms.
+#endif
+
+#include <mpi-priv.h>
+
+/*
+ * MPI glue
+ *
+ */
+
+/* Presently, this is only used by the Montgomery arithmetic code. */
+/* c += a * b */
+void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len,
+                                       mp_digit b, mp_digit *c)
+{
+  mp_digit w;
+  mp_digit d;
+
+  d = s_mpv_mul_add_vec64(c, a, a_len, b);
+  c += a_len;
+  while (d) {
+    w = c[0] + d;
+    d = (w < c[0] || w < d);
+    *c++ = w;
+  }
+}
+