2.11BSD/include/nlist.h

/*-
 * Copyright (c) 1991 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.
 *
 *	@(#)nlist.h	5.6.1 (2.11BSD GTE) 1/15/94
 */

#ifndef	_NLIST_H_
#define	_NLIST_H_
#include <sys/types.h>

/*
 * Symbol table entry format.  The #ifdef's are so that programs including
 * nlist.h can initialize nlist structures statically.
 */

struct	oldnlist {		/* XXX - compatibility/conversion aid */
	char	n_name[8];	/* symbol name */
	int	n_type;		/* type flag */
unsigned int	n_value;	/* value */
};

struct	nlist {
#ifdef	_AOUT_INCLUDE_
	union {
		char *n_name;	/* In memory address of symbol name */
		off_t n_strx;	/* String table offset (file) */
	} n_un;
#else
	char	*n_name;	/* symbol name (in memory) */
	char	*n_filler;	/* need to pad out to the union's size */
#endif
	u_char	n_type;		/* Type of symbol - see below */
	char	n_ovly;		/* Overlay number */
	u_int	n_value;	/* Symbol value */
};

/*
 * Simple values for n_type.
 */
#define	N_UNDF	0x00		/* undefined */
#define	N_ABS	0x01		/* absolute */
#define	N_TEXT	0x02		/* text segment */
#define	N_DATA	0x03		/* data segment */
#define	N_BSS	0x04		/* bss segment */
#define	N_REG	0x14		/* register symbol */
#define	N_FN	0x1f		/* file name */

#define	N_EXT	0x20		/* external (global) bit, OR'ed in */
#define	N_TYPE	0x1f		/* mask for all the type bits */

#define	N_FORMAT	"%06o"	/* namelist value format; XXX */
#endif	/* !_NLIST_H_ */