1 files changed, 36 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/crypto_primitives.c b/security/nss/lib/freebl/crypto_primitives.c
new file mode 100644
index 0000000000..49c8ca5ca6
--- /dev/null
+++ b/security/nss/lib/freebl/crypto_primitives.c
@@ -0,0 +1,36 @@
+/* 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/. */
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+
+/* This file holds useful functions and macros for crypto code. */
+#include "crypto_primitives.h"
+
+/*
+ * FREEBL_HTONLL(x): swap bytes in a 64-bit integer.
+ */
+#if defined(__GNUC__) && (defined(__x86_64__) || defined(__x86_64))
+
+__inline__ PRUint64
+swap8b(PRUint64 value)
+{
+    __asm__("bswapq %0"
+            : "+r"(value));
+    return (value);
+}
+
+#elif !defined(_MSC_VER)
+
+PRUint64
+swap8b(PRUint64 x)
+{
+    PRUint64 t1 = x;
+    t1 = ((t1 & SHA_MASK8) << 8) | ((t1 >> 8) & SHA_MASK8);
+    t1 = ((t1 & SHA_MASK16) << 16) | ((t1 >> 16) & SHA_MASK16);
+    return (t1 >> 32) | (t1 << 32);
+}
+
+#endif