[apple/libc.git] / include / nlist.h

/*-
 * Copyright (c) 1991, 1993
 *      The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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     8.2 (Berkeley) 1/21/94
 */

#ifndef _NLIST_H_
#define _NLIST_H_

/*
 * Symbol table entry format.  The #ifdef's are so that programs including
 * nlist.h can initialize nlist structures statically.
 */
struct nlist {
#ifdef _AOUT_INCLUDE_
        union {
                char *n_name;   /* symbol name (in memory) */
                long n_strx;    /* file string table offset (on disk) */
        } n_un;
#else
        char *n_name;           /* symbol name (in memory) */
#endif

#define N_UNDF  0x00            /* undefined */
#define N_ABS   0x02            /* absolute address */
#define N_TEXT  0x04            /* text segment */
#define N_DATA  0x06            /* data segment */
#define N_BSS   0x08            /* bss segment */
#define N_COMM  0x12            /* common reference */
#define N_FN    0x1e            /* file name */

#define N_EXT   0x01            /* external (global) bit, OR'ed in */
#define N_TYPE  0x1e            /* mask for all the type bits */
        unsigned char n_type;   /* type defines */

        char n_other;           /* spare */
#define n_hash  n_desc          /* used internally by ld(1); XXX */
        short n_desc;           /* used by stab entries */
        unsigned long n_value;  /* address/value of the symbol */
};

#define N_FORMAT        "%08x"  /* namelist value format; XXX */
#define N_STAB          0x0e0   /* mask for debugger symbols -- stab(5) */

#include <sys/cdefs.h>

__BEGIN_DECLS
int nlist(const char *, struct nlist *);
__END_DECLS

#endif /* !_NLIST_H_ */