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/*-
* 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
*
* $FreeBSD: src/include/nlist.h,v 1.7 1999/08/27 23:44:51 peter Exp $
* $DragonFly: src/include/nlist.h,v 1.4 2004/11/18 12:38:43 joerg Exp $
*/

#ifndef _NLIST_H_
#define _NLIST_H_

/*
* Symbol table entries in a.out files.
*/

/*
* Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that
* programs including nlist.h can initialize nlist structures
* statically.
*/
struct nlist {
#ifdef _AOUT_INCLUDE_
union {
const char *n_name; /* symbol name (in memory) */
long n_strx; /* file string table offset (on disk) */
} n_un;
#else
const char *n_name; /* symbol name (in memory) */
#endif
unsigned char n_type; /* type defines */
char n_other; /* ".type" and binding information */
short n_desc; /* used by stab entries */
unsigned long n_value; /* address/value of the symbol */
};

#define n_hash n_desc /* used internally by ld(1); XXX */

/*
* Defines for n_type.
*/
#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_INDR 0x0a /* alias definition */
#define N_SIZE 0x0c /* pseudo type, defines a symbol's size */
#define N_COMM 0x12 /* common reference */
/* GNU extensions */
#define N_SETA 0x14 /* Absolute set element symbol */
#define N_SETT 0x16 /* Text set element symbol */
#define N_SETD 0x18 /* Data set element symbol */
#define N_SETB 0x1a /* Bss set element symbol */
#define N_SETV 0x1c /* Pointer to set vector in data area. */
/* end GNU extensions */
#define N_FN 0x1e /* file name (N_EXT on) */
#define N_WARN 0x1e /* warning message (N_EXT off) */

#define N_EXT 0x01 /* external (global) bit, OR'ed in */
#define N_TYPE 0x1e /* mask for all the type bits */
#define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */

/*
* Defines for n_other. It contains the ".type" (AUX) field in the least
* significant 4 bits, and the binding (for weak symbols) in the most
* significant 4 bits.
*/
#define N_AUX(p) ((p)->n_other & 0xf)
#define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf)
#define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf))

#define AUX_OBJECT 1 /* data object */
#define AUX_FUNC 2 /* function */

/*#define BIND_LOCAL 0 not used */
/*#define BIND_GLOBAL 1 not used */
#define BIND_WEAK 2 /* weak binding */

#define N_FORMAT "%08x" /* namelist value format; XXX */

#include <sys/cdefs.h>

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

#endif /* !_NLIST_H_ */
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