Benjamin Barenblat
3acaa1c4d3
Run clang-format over the Mosh source tree. This is a large change and
has been factored into its own commit for auditability. Reproduce it
with
find . -name \*.cc -or -name \*.h | while read f; do clang-format -i --style=file $f; done
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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Mosh: the mobile shell
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Copyright 2012 Keith Winstein
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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In addition, as a special exception, the copyright holders give
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permission to link the code of portions of this program with the
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OpenSSL library under certain conditions as described in each
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individual source file, and distribute linked combinations including
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the two.
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You must obey the GNU General Public License in all respects for all
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of the code used other than OpenSSL. If you modify file(s) with this
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exception, you may extend this exception to your version of the
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file(s), but you are not obligated to do so. If you do not wish to do
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so, delete this exception statement from your version. If you delete
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this exception statement from all source files in the program, then
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also delete it here.
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*/
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#ifndef BYTEORDER_HPP
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#define BYTEORDER_HPP
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#include "src/include/config.h"
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#if HAVE_DECL_BE64TOH || HAVE_DECL_BETOH64
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#if defined( HAVE_ENDIAN_H )
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#include <endian.h>
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#elif defined( HAVE_SYS_ENDIAN_H )
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#include <sys/endian.h>
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#include <sys/types.h>
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#endif
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#if !HAVE_DECL_BE64TOH && HAVE_DECL_BETOH64
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#define be64toh betoh64
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#define be16toh betoh16
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#endif
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#elif HAVE_OSX_SWAP
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#include <libkern/OSByteOrder.h>
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#define htobe64 OSSwapHostToBigInt64
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#define be64toh OSSwapBigToHostInt64
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#define htobe16 OSSwapHostToBigInt16
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#define be16toh OSSwapBigToHostInt16
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#else
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/* Use our fallback implementation, which is correct for any endianness. */
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#include <cstdint>
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/* Make sure they aren't macros */
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#undef htobe64
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#undef be64toh
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#undef htobe16
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#undef be16toh
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/* Use unions rather than casts, to comply with strict aliasing rules. */
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inline uint64_t htobe64( uint64_t x )
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{
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uint8_t xs[8] = { static_cast<uint8_t>( ( x >> 56 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 48 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 40 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 32 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 24 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 16 ) & 0xFF ),
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static_cast<uint8_t>( ( x >> 8 ) & 0xFF ),
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static_cast<uint8_t>( (x)&0xFF ) };
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union {
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const uint8_t* p8;
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const uint64_t* p64;
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} u;
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u.p8 = xs;
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return *u.p64;
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}
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inline uint64_t be64toh( uint64_t x )
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{
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union {
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const uint8_t* p8;
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const uint64_t* p64;
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} u;
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u.p64 = &x;
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return ( uint64_t( u.p8[0] ) << 56 ) | ( uint64_t( u.p8[1] ) << 48 ) | ( uint64_t( u.p8[2] ) << 40 )
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| ( uint64_t( u.p8[3] ) << 32 ) | ( uint64_t( u.p8[4] ) << 24 ) | ( uint64_t( u.p8[5] ) << 16 )
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| ( uint64_t( u.p8[6] ) << 8 ) | ( uint64_t( u.p8[7] ) );
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}
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inline uint16_t htobe16( uint16_t x )
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{
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uint8_t xs[2] = { static_cast<uint8_t>( ( x >> 8 ) & 0xFF ), static_cast<uint8_t>( (x)&0xFF ) };
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union {
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const uint8_t* p8;
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const uint16_t* p16;
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} u;
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u.p8 = xs;
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return *u.p16;
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}
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inline uint16_t be16toh( uint16_t x )
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{
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union {
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const uint8_t* p8;
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const uint16_t* p16;
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} u;
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u.p16 = &x;
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return ( uint16_t( u.p8[0] ) << 8 ) | ( uint16_t( u.p8[1] ) );
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}
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#endif
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#endif
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