diff options
Diffstat (limited to 'sysdeps/tile/bits/byteswap.h')
| -rw-r--r-- | sysdeps/tile/bits/byteswap.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/tile/bits/byteswap.h b/sysdeps/tile/bits/byteswap.h new file mode 100644 index 0000000000..1e1007708b --- /dev/null +++ b/sysdeps/tile/bits/byteswap.h @@ -0,0 +1,37 @@ +/* Copyright (C) 2011-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. + + 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 */ |