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-rw-r--r--libc/sysdeps/linux/tile/bits/byteswap.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/tile/bits/byteswap.h b/libc/sysdeps/linux/tile/bits/byteswap.h
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+++ b/libc/sysdeps/linux/tile/bits/byteswap.h
@@ -0,0 +1,35 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H 1
+
+#include <bits/types.h>
+
+/* gcc __builtin_bswap64() can constant-fold, etc, so always use it. */
+#define __bswap_16(x) ((unsigned short)(__builtin_bswap32(x) >> 16))
+#define __bswap_32(x) ((unsigned int)__builtin_bswap32(x))
+#define __bswap_64(x) ((__uint64_t)__builtin_bswap64(x))
+
+#define __bswap_constant_16(x) __bswap_16(x)
+#define __bswap_constant_32(x) __bswap_32(x)
+#define __bswap_constant_64(x) __bswap_64(x)
+
+#endif /* _BITS_BYTESWAP_H */