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Diffstat (limited to 'wsutil/pint.h')
| -rw-r--r-- | wsutil/pint.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/wsutil/pint.h b/wsutil/pint.h new file mode 100644 index 0000000000..6714c29272 --- /dev/null +++ b/wsutil/pint.h @@ -0,0 +1,157 @@ +/* pint.h + * Definitions for extracting and translating integers safely and portably + * via pointers. + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __PINT_H__ +#define __PINT_H__ + +#include <glib.h> + +/* Pointer versions of g_ntohs and g_ntohl. Given a pointer to a member of a + * byte array, returns the value of the two or four bytes at the pointer. + * The pletoh[sl] versions return the little-endian representation. + */ + +#define pntohs(p) ((guint16) \ + ((guint16)*((const guint8 *)(p)+0)<<8| \ + (guint16)*((const guint8 *)(p)+1)<<0)) + +#define pntoh24(p) ((guint32)*((const guint8 *)(p)+0)<<16| \ + (guint32)*((const guint8 *)(p)+1)<<8| \ + (guint32)*((const guint8 *)(p)+2)<<0) + +#define pntohl(p) ((guint32)*((const guint8 *)(p)+0)<<24| \ + (guint32)*((const guint8 *)(p)+1)<<16| \ + (guint32)*((const guint8 *)(p)+2)<<8| \ + (guint32)*((const guint8 *)(p)+3)<<0) + +#define pntoh40(p) ((guint64)*((const guint8 *)(p)+0)<<32| \ + (guint64)*((const guint8 *)(p)+1)<<24| \ + (guint64)*((const guint8 *)(p)+2)<<16| \ + (guint64)*((const guint8 *)(p)+3)<<8| \ + (guint64)*((const guint8 *)(p)+4)<<0) + +#define pntoh48(p) ((guint64)*((const guint8 *)(p)+0)<<40| \ + (guint64)*((const guint8 *)(p)+1)<<32| \ + (guint64)*((const guint8 *)(p)+2)<<24| \ + (guint64)*((const guint8 *)(p)+3)<<16| \ + (guint64)*((const guint8 *)(p)+4)<<8| \ + (guint64)*((const guint8 *)(p)+5)<<0) + +#define pntoh56(p) ((guint64)*((const guint8 *)(p)+0)<<48| \ + (guint64)*((const guint8 *)(p)+1)<<40| \ + (guint64)*((const guint8 *)(p)+2)<<32| \ + (guint64)*((const guint8 *)(p)+3)<<24| \ + (guint64)*((const guint8 *)(p)+4)<<16| \ + (guint64)*((const guint8 *)(p)+5)<<8| \ + (guint64)*((const guint8 *)(p)+6)<<0) + +#define pntoh64(p) ((guint64)*((const guint8 *)(p)+0)<<56| \ + (guint64)*((const guint8 *)(p)+1)<<48| \ + (guint64)*((const guint8 *)(p)+2)<<40| \ + (guint64)*((const guint8 *)(p)+3)<<32| \ + (guint64)*((const guint8 *)(p)+4)<<24| \ + (guint64)*((const guint8 *)(p)+5)<<16| \ + (guint64)*((const guint8 *)(p)+6)<<8| \ + (guint64)*((const guint8 *)(p)+7)<<0) + + +#define pletohs(p) ((guint16) \ + ((guint16)*((const guint8 *)(p)+1)<<8| \ + (guint16)*((const guint8 *)(p)+0)<<0)) + +#define pletoh24(p) ((guint32)*((const guint8 *)(p)+2)<<16| \ + (guint32)*((const guint8 *)(p)+1)<<8| \ + (guint32)*((const guint8 *)(p)+0)<<0) + +#define pletohl(p) ((guint32)*((const guint8 *)(p)+3)<<24| \ + (guint32)*((const guint8 *)(p)+2)<<16| \ + (guint32)*((const guint8 *)(p)+1)<<8| \ + (guint32)*((const guint8 *)(p)+0)<<0) + +#define pletoh40(p) ((guint64)*((const guint8 *)(p)+4)<<32| \ + (guint64)*((const guint8 *)(p)+3)<<24| \ + (guint64)*((const guint8 *)(p)+2)<<16| \ + (guint64)*((const guint8 *)(p)+1)<<8| \ + (guint64)*((const guint8 *)(p)+0)<<0) + +#define pletoh48(p) ((guint64)*((const guint8 *)(p)+5)<<40| \ + (guint64)*((const guint8 *)(p)+4)<<32| \ + (guint64)*((const guint8 *)(p)+3)<<24| \ + (guint64)*((const guint8 *)(p)+2)<<16| \ + (guint64)*((const guint8 *)(p)+1)<<8| \ + (guint64)*((const guint8 *)(p)+0)<<0) + +#define pletoh56(p) ((guint64)*((const guint8 *)(p)+6)<<48| \ + (guint64)*((const guint8 *)(p)+5)<<40| \ + (guint64)*((const guint8 *)(p)+4)<<32| \ + (guint64)*((const guint8 *)(p)+3)<<24| \ + (guint64)*((const guint8 *)(p)+2)<<16| \ + (guint64)*((const guint8 *)(p)+1)<<8| \ + (guint64)*((const guint8 *)(p)+0)<<0) + +#define pletoh64(p) ((guint64)*((const guint8 *)(p)+7)<<56| \ + (guint64)*((const guint8 *)(p)+6)<<48| \ + (guint64)*((const guint8 *)(p)+5)<<40| \ + (guint64)*((const guint8 *)(p)+4)<<32| \ + (guint64)*((const guint8 *)(p)+3)<<24| \ + (guint64)*((const guint8 *)(p)+2)<<16| \ + (guint64)*((const guint8 *)(p)+1)<<8| \ + (guint64)*((const guint8 *)(p)+0)<<0) + +/* Pointer routines to put items out in a particular byte order. + * These will work regardless of the byte alignment of the pointer. + */ + +#define phtons(p, v) \ + { \ + ((guint8*)(p))[0] = (guint8)((v) >> 8); \ + ((guint8*)(p))[1] = (guint8)((v) >> 0); \ + } + +#define phtonl(p, v) \ + { \ + ((guint8*)(p))[0] = (guint8)((v) >> 24); \ + ((guint8*)(p))[1] = (guint8)((v) >> 16); \ + ((guint8*)(p))[2] = (guint8)((v) >> 8); \ + ((guint8*)(p))[3] = (guint8)((v) >> 0); \ + } + + +/* Macros to byte-swap 32-bit and 16-bit quantities. */ +#define BSWAP32(x) \ + ((((x)&0xFF000000)>>24) | \ + (((x)&0x00FF0000)>>8) | \ + (((x)&0x0000FF00)<<8) | \ + (((x)&0x000000FF)<<24)) +#define BSWAP16(x) \ + ((((x)&0xFF00)>>8) | \ + (((x)&0x00FF)<<8)) + +/* Turn host-byte-order values into little-endian values. */ +#define htoles(s) GUINT16_TO_LE(s) +#define htolel(l) GUINT32_TO_LE(l) + +#endif /* PINT_H */ |