util.h

USB monitor

/* util.h - Nereid USB Monitor / Utility
 * Copyright (C) 2003 Tachibana Eriko
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef util_h
#define util_h

#include <stdio.h>


/* 16恑悢僟儞僾 */
static __inline void
hexdump (unsigned char* buf, int len)
{
  while (--len >= 0)
    printf (len ? "%02x " : "%02x", *buf++);
}


/* 2僶僀僩忋壓斀揮撉傒崬傒 */
#define read_w(n) read_wp (&n)
static __inline unsigned int
read_wp (unsigned short* n)
{
  unsigned char* p = (unsigned char*) n;

  return (p[1] << 8) + p[0];
}


/* 2僶僀僩忋壓斀揮 */
static __inline unsigned int
swap_w (unsigned short n)
{
  return ((n << 8) + (n >> 8)) & 0xffff;
}


#endif /* !usbmon_h */

/* EOF */