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-rw-r--r--Build/source/libs/gmp/gmp-6.0.0/mpn/generic/sec_tabselect.c55
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diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/sec_tabselect.c b/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/sec_tabselect.c
new file mode 100644
index 00000000000..7ea2ffda63b
--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/generic/sec_tabselect.c
@@ -0,0 +1,55 @@
+/* mpn_sec_tabselect.
+
+Copyright 2007-2009, 2011, 2013 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library 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.
+
+The GNU MP Library 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 the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+/* Select entry `which' from table `tab', which has nents entries, each `n'
+ limbs. Store the selected entry at rp. Reads entire table to avoid
+ side-channel information leaks. O(n*nents). */
+void
+mpn_sec_tabselect (volatile mp_limb_t *rp, volatile const mp_limb_t *tab,
+ mp_size_t n, mp_size_t nents, mp_size_t which)
+{
+ mp_size_t k, i;
+ mp_limb_t mask;
+ volatile const mp_limb_t *tp;
+
+ for (k = 0; k < nents; k++)
+ {
+ mask = -(mp_limb_t) (which == k);
+ tp = tab + n * k;
+ for (i = 0; i < n; i++)
+ {
+ rp[i] = (rp[i] & ~mask) | (tp[i] & mask);
+ }
+ }
+}