usr/src/include/nlist.h

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)nlist.h     5.4 (Berkeley) 5/29/90
 */

/*
 * Format of a symbol table entry; this file is included by <a.out.h>
 * and should be used if you aren't interested the a.out header
 * or relocation information.
 */
struct  nlist {
        char    *n_name;        /* for use when in-core */
        unsigned char n_type;   /* type flag, i.e. N_TEXT etc; see below */
        char    n_other;        /* unused */
        short   n_desc;         /* see <stab.h> */
        unsigned long n_value;  /* value of this symbol (or sdb offset) */
};
#define n_hash  n_desc          /* used internally by ld */

/*
 * Simple values for n_type.
 */
#define N_UNDF  0x0             /* undefined */
#define N_ABS   0x2             /* absolute */
#define N_TEXT  0x4             /* text */
#define N_DATA  0x6             /* data */
#define N_BSS   0x8             /* bss */
#define N_COMM  0x12            /* common (internal to ld) */
#define N_FN    0x1e            /* file name symbol */

#define N_EXT   01              /* external bit, or'ed in */
#define N_TYPE  0x1e            /* mask for all the type bits */

/*
 * Sdb entries have some of the N_STAB bits set.
 * These are given in <stab.h>
 */
#define N_STAB  0xe0            /* if any of these bits set, a SDB entry */

/*
 * Format for namelist values.
 */
#define N_FORMAT        "%08x"

#if __STDC__ || c_plusplus
extern int nlist(const char *, struct nlist *);
#else
extern int nlist();
#endif