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Part one of userland __P removal.  Done with a simple regexp with some minor hand editing to make comments line up correctly.  Another pass is forthcoming that handles the cases that could not be done automatically.

/*	$OpenBSD: hexdump.c,v 1.8 2002/02/16 21:27:47 millert Exp $	*/
/*	$NetBSD: hexdump.c,v 1.7 1997/10/19 02:34:06 lukem Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
/*static char sccsid[] = "from: @(#)hexdump.c	5.5 (Berkeley) 6/1/90";*/
static char rcsid[] = "$OpenBSD: hexdump.c,v 1.8 2002/02/16 21:27:47 millert Exp $";
#endif /* not lint */

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include "hexdump.h"

FS *fshead;				/* head of format strings */
int blocksize;				/* data block size */
int exitval;				/* final exit value */
int length = -1;			/* max bytes to read */

int	main(int, char **);

int
main(argc, argv)
	int argc;
	char *argv[];
{
	FS *tfs;
	char *p;

	if (!(p = strrchr(argv[0], 'o')) || strcmp(p, "od"))
		newsyntax(argc, &argv);
	else
		oldsyntax(argc, &argv);

	/* figure out the data block size */
	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
		tfs->bcnt = size(tfs);
		if (blocksize < tfs->bcnt)
			blocksize = tfs->bcnt;
	}
	/* rewrite the rules, do syntax checking */
	for (tfs = fshead; tfs; tfs = tfs->nextfs)
		rewrite(tfs);

	(void)next(argv);
	display();
	exit(exitval);
}