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Diffstat (limited to 'tdeio/misc/tdentlm/kswap.h')
| -rw-r--r-- | tdeio/misc/tdentlm/kswap.h | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/tdeio/misc/tdentlm/kswap.h b/tdeio/misc/tdentlm/kswap.h new file mode 100644 index 000000000..9eca243de --- /dev/null +++ b/tdeio/misc/tdentlm/kswap.h @@ -0,0 +1,428 @@ +/* + This file is part of the KDE libraries. + Copyright (c) 2004 Szombathelyi György <gyurco@freemail.hu> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License version 2 as published by the Free Software Foundation. + + This 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef KSWAP_H +#define KSWAP_H + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <tqglobal.h> + +/** + * \defgroup KSWAP Byte-swapping functions + * kswap.h contains functions that will help converting + * 16, 32 and 64 bit length data between little-endian and + * big-endian representations. + * + * The KSWAP_16, KSWAP_32 and KSWAP_64 functions are always + * swaps the byte order of the supplied argument (which should be + * 16, 32 or 64 bit wide). These functions are inline, and tries to + * use the most optimized function of the underlying system + * (bswap_xx functions from byteswap.h in GLIBC, or ntohs and ntohl + * on little-endian machines, and if neither are applicable, some fast + * custom code). + * + * The KFromTo{Little|Big}Endian functions are for converting big-endian and + * little-endian data to and from the machine endianness. + */ + +#ifdef HAVE_BYTESWAP_H +#include <byteswap.h> + + inline TQ_UINT16 KSWAP_16( TQ_UINT16 b ) { return bswap_16( b ); } + inline TQ_INT16 KSWAP_16( TQ_INT16 b ) { return bswap_16( (TQ_UINT16)b ); } + inline TQ_UINT32 KSWAP_32( TQ_UINT32 b ) { return bswap_32( b ); } + inline TQ_INT32 KSWAP_32( TQ_INT32 b ) { return bswap_32( (TQ_UINT32)b ); } + inline TQ_UINT64 KSWAP_64( TQ_UINT64 b ) { return bswap_64( b ); } + inline TQ_INT64 KSWAP_64( TQ_INT64 b ) { return bswap_64( (TQ_UINT64)b ); } + +#else /* HAVE_BYTESWAP_H */ +#ifdef WORDS_BIGENDIAN + inline TQ_UINT16 KSWAP_16( TQ_UINT16 b ) + { + return (((b) & 0x00ff) << 8 | ((b) & 0xff00) >> 8); + } + + inline TQ_INT16 KSWAP_16( TQ_INT16 b ) + { + return ((((TQ_UINT16)b) & 0x00ff) << 8 | (((TQ_UINT16)b) & 0xff00) >> 8); + } + + inline TQ_UINT32 KSWAP_32( TQ_UINT32 b ) + { + return + ((((b) & 0xff000000) >> 24) | (((b) & 0x00ff0000) >> 8) | \ + (((b) & 0x0000ff00) << 8) | (((b) & 0x000000ff) << 24)); + } + + inline TQ_INT32 KSWAP_32( TQ_INT32 b ) + { + return + (((((TQ_UINT32)b) & 0xff000000) >> 24) | ((((TQ_UINT32)b) & 0x00ff0000) >> 8) | \ + ((((TQ_UINT32)b) & 0x0000ff00) << 8) | ((((TQ_UINT32)b) & 0x000000ff) << 24)); + } +#else /* WORDS_BIGENDIAN */ +#include <sys/types.h> +#include <netinet/in.h> + + inline TQ_UINT16 KSWAP_16( TQ_UINT16 b ) { return htons(b); } + inline TQ_INT16 KSWAP_16( TQ_INT16 b ) { return htons((TQ_UINT16)b); } + inline TQ_UINT32 KSWAP_32( TQ_UINT32 b ) { return htonl(b); } + inline TQ_INT32 KSWAP_32( TQ_INT32 b ) { return htonl((TQ_UINT32)b); } +#endif + inline TQ_UINT64 KSWAP_64( TQ_UINT64 b ) + { + union { + TQ_UINT64 ll; + TQ_UINT32 l[2]; + } w, r; + w.ll = b; + r.l[0] = KSWAP_32( w.l[1] ); + r.l[1] = KSWAP_32( w.l[0] ); + return r.ll; + } + + inline TQ_INT64 KSWAP_64( TQ_INT64 b ) + { + union { + TQ_UINT64 ll; + TQ_UINT32 l[2]; + } w, r; + w.ll = (TQ_UINT64) b; + r.l[0] = KSWAP_32( w.l[1] ); + r.l[1] = KSWAP_32( w.l[0] ); + return r.ll; + } +#endif /* !HAVE_BYTESWAP_H */ + +/** + * \ingroup KSWAP + * Converts a 16 bit unsigned value from/to big-endian byte order to/from the machine order. + */ +inline TQ_UINT16 KFromToBigEndian( TQ_UINT16 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_16(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit unsigned array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_UINT16 *out, TQ_UINT16 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<1 ) ; +#else + while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit unsigned value from/to big-endian byte order to/from the machine order. + */ +inline TQ_UINT32 KFromToBigEndian( TQ_UINT32 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_32(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit unsigned array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_UINT32 *out, TQ_UINT32 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<2 ) ; +#else + while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit unsigned value from/to big-endian byte order to/from the machine order. + */ +inline TQ_UINT64 KFromToBigEndian( TQ_UINT64 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_64(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit unsigned array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_UINT64 *out, TQ_UINT64 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<3 ) ; +#else + while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit signed value from/to big-endian byte order to/from the machine order. + */ +inline TQ_INT16 KFromToBigEndian( TQ_INT16 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_16(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit signed array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_INT16 *out, TQ_INT16 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<1 ) ; +#else + while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit signed value from/to big-endian byte order to/from the machine order. + */ +inline TQ_INT32 KFromToBigEndian( TQ_INT32 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_32(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit signed array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_INT32 *out, TQ_INT32 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<2 ) ; +#else + while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit signed value from/to big-endian byte order to/from the machine order. + */ +inline TQ_INT64 KFromToBigEndian( TQ_INT64 b ) +{ +#ifdef WORDS_BIGENDIAN + return b; +#else + return KSWAP_64(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit signed array from/to big-endian byte order to/from the machine order. + */ +inline void KFromToBigEndian( TQ_INT64 *out, TQ_INT64 *in, uint len ) +{ +#ifdef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<3 ) ; +#else + while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit unsigned value from/to little-endian byte order to/from the machine order. + */ +inline TQ_UINT16 KFromToLittleEndian( TQ_UINT16 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_16(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit unsigned array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_UINT16 *out, TQ_UINT16 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<1 ) ; +#else + while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit unsigned value from/to little-endian byte order to/from the machine order. + */ +inline TQ_UINT32 KFromToLittleEndian( TQ_UINT32 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_32(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit unsigned array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_UINT32 *out, TQ_UINT32 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<2 ) ; +#else + while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit unsigned value from/to little-endian byte order to/from the machine order. + */ +inline TQ_UINT64 KFromToLittleEndian( TQ_UINT64 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_64(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit unsigned array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_UINT64 *out, TQ_UINT64 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<3 ) ; +#else + while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit signed value from/to little-endian byte order to/from the machine order. + */ +inline TQ_INT16 KFromToLittleEndian( TQ_INT16 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_16(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 16 bit signed array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_INT16 *out, TQ_INT16 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<1 ) ; +#else + while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit signed value from/to little-endian byte order to/from the machine order. + */ +inline TQ_INT32 KFromToLittleEndian( TQ_INT32 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_32(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 32 bit signed array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_INT32 *out, TQ_INT32 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<2 ) ; +#else + while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; } +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit signed value from/to little-endian byte order to/from the machine order. + */ +inline TQ_INT64 KFromToLittleEndian( TQ_INT64 b ) +{ +#ifndef WORDS_BIGENDIAN + return b; +#else + return KSWAP_64(b); +#endif +} + +/** + * \ingroup KSWAP + * Converts a 64 bit signed array from/to little-endian byte order to/from the machine order. + */ +inline void KFromToLittleEndian( TQ_INT64 *out, TQ_INT64 *in, uint len ) +{ +#ifndef WORDS_BIGENDIAN + if ( out != in ) memcpy( out, in, len<<3 ) ; +#else + while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; } +#endif +} + +#endif /* KSWAP_H */ |