[ramdisk] add cvitek pre-built ramdisk

Change-Id: Ic7d2046a23358129eaf621b5558984a64fa7361d

ramdisk/initramfs/glibc_riscv64/usr/include/byteswap.h

@@ -0,0 +1,39 @@
+/* Copyright (C) 1997-2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BYTESWAP_H
+#define _BYTESWAP_H	1
+
+#include <features.h>
+
+/* Get the machine specific, optimized definitions.  */
+#include <bits/byteswap.h>
+
+
+/* The following definitions must all be macros since otherwise some
+   of the possible optimizations are not possible.  */
+
+/* Return a value with all bytes in the 16 bit argument swapped.  */
+#define bswap_16(x) __bswap_16 (x)
+
+/* Return a value with all bytes in the 32 bit argument swapped.  */
+#define bswap_32(x) __bswap_32 (x)
+
+/* Return a value with all bytes in the 64 bit argument swapped.  */
+#define bswap_64(x) __bswap_64 (x)
+
+#endif /* byteswap.h */