BSD 4_3_Tahoe release
[unix-history] / usr / include / nlist.h
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1/*
2 * Copyright (c) 1980 Regents of the University of California.
3 * All rights reserved. The Berkeley software License Agreement
4 * specifies the terms and conditions for redistribution.
5 *
ca67e7b4 6 * @(#)nlist.h 5.2 (Berkeley) 4/7/87
bb0cfa24 7 */
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8
9/*
10 * Format of a symbol table entry; this file is included by <a.out.h>
11 * and should be used if you aren't interested the a.out header
12 * or relocation information.
13 */
14struct nlist {
15 char *n_name; /* for use when in-core */
16 unsigned char n_type; /* type flag, i.e. N_TEXT etc; see below */
17 char n_other; /* unused */
18 short n_desc; /* see <stab.h> */
19 unsigned long n_value; /* value of this symbol (or sdb offset) */
20};
21#define n_hash n_desc /* used internally by ld */
22
23/*
24 * Simple values for n_type.
25 */
26#define N_UNDF 0x0 /* undefined */
27#define N_ABS 0x2 /* absolute */
28#define N_TEXT 0x4 /* text */
29#define N_DATA 0x6 /* data */
30#define N_BSS 0x8 /* bss */
31#define N_COMM 0x12 /* common (internal to ld) */
9822e909 32#define N_FN 0x1e /* file name symbol */
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33
34#define N_EXT 01 /* external bit, or'ed in */
35#define N_TYPE 0x1e /* mask for all the type bits */
36
37/*
38 * Sdb entries have some of the N_STAB bits set.
39 * These are given in <stab.h>
40 */
41#define N_STAB 0xe0 /* if any of these bits set, a SDB entry */
42
43/*
44 * Format for namelist values.
45 */
46#define N_FORMAT "%08x"