1 files changed, 57 insertions, 0 deletions
diff --git a/src/Common/Endian.c b/src/Common/Endian.c
new file mode 100644
index 00000000..75f595e0
--- /dev/null
+++ b/src/Common/Endian.c
@@ -0,0 +1,57 @@
+/*
+ Legal Notice: Some portions of the source code contained in this file were
+ derived from the source code of Encryption for the Masses 2.02a, which is
+ Copyright (c) 1998-2000 Paul Le Roux and which is governed by the 'License
+ Agreement for Encryption for the Masses'. Modifications and additions to
+ the original source code (contained in this file) and all other portions
+ of this file are Copyright (c) 2003-2009 TrueCrypt Developers Association
+ and are governed by the TrueCrypt License 3.0 the full text of which is
+ contained in the file License.txt included in TrueCrypt binary and source
+ code distribution packages. */
+
+#include "Tcdefs.h"
+#include "Common/Endian.h"
+
+
+unsigned __int16 MirrorBytes16 (unsigned __int16 x)
+{
+	return (x << 8) | (x >> 8);
+}
+
+
+unsigned __int32 MirrorBytes32 (unsigned __int32 x)
+{
+	unsigned __int32 n = (unsigned __int8) x;
+	n <<= 8; n |= (unsigned __int8) (x >> 8);
+	n <<= 8; n |= (unsigned __int8) (x >> 16);
+	return (n << 8) | (unsigned __int8) (x >> 24);
+}
+
+#ifndef TC_NO_COMPILER_INT64
+uint64 MirrorBytes64 (uint64 x)
+{
+	uint64 n = (unsigned __int8) x;
+	n <<= 8; n |= (unsigned __int8) (x >> 8);
+	n <<= 8; n |= (unsigned __int8) (x >> 16);
+	n <<= 8; n |= (unsigned __int8) (x >> 24);
+	n <<= 8; n |= (unsigned __int8) (x >> 32);
+	n <<= 8; n |= (unsigned __int8) (x >> 40);
+	n <<= 8; n |= (unsigned __int8) (x >> 48);
+	return (n << 8) | (unsigned __int8) (x >> 56);
+}
+#endif
+
+void
+LongReverse (unsigned __int32 *buffer, unsigned byteCount)
+{
+	unsigned __int32 value;
+
+	byteCount /= sizeof (unsigned __int32);
+	while (byteCount--)
+	{
+		value = *buffer;
+		value = ((value & 0xFF00FF00L) >> 8) | \
+		    ((value & 0x00FF00FFL) << 8);
+		*buffer++ = (value << 16) | (value >> 16);
+	}
+}