1 files changed, 31 insertions, 0 deletions
diff --git a/crypto/ec/curve448/arch_64/arch_intrinsics.h b/crypto/ec/curve448/arch_64/arch_intrinsics.h
new file mode 100644
index 0000000000..650b63897d
--- /dev/null
+++ b/crypto/ec/curve448/arch_64/arch_intrinsics.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2016 Cryptography Research, Inc.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ *
+ * Originally written by Mike Hamburg
+ */
+
+#ifndef __ARCH_REF64_ARCH_INTRINSICS_H__
+# define __ARCH_REF64_ARCH_INTRINSICS_H__
+
+# define ARCH_WORD_BITS 64
+
+static __inline__ __attribute((always_inline, unused))
+uint64_t word_is_zero(uint64_t a)
+{
+    /* let's hope the compiler isn't clever enough to optimize this. */
+    return (((__uint128_t) a) - 1) >> 64;
+}
+
+static __inline__ __attribute((always_inline, unused))
+__uint128_t widemul(uint64_t a, uint64_t b)
+{
+    return ((__uint128_t) a) * b;
+}
+
+#endif                          /* ARCH_REF64_ARCH_INTRINSICS_H__ */