mtree(8): Fix crc() prototype.
[dragonfly.git] / include / nlist.h
blob801f9db1bf1c62203851ee2653d86e3ff3a77227
1 /*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
34 * @(#)nlist.h 8.2 (Berkeley) 1/21/94
36 * $FreeBSD: src/include/nlist.h,v 1.7 1999/08/27 23:44:51 peter Exp $
37 * $DragonFly: src/include/nlist.h,v 1.4 2004/11/18 12:38:43 joerg Exp $
40 #ifndef _NLIST_H_
41 #define _NLIST_H_
44 * Symbol table entries in a.out files.
48 * Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that
49 * programs including nlist.h can initialize nlist structures
50 * statically.
52 struct nlist {
53 #ifdef _AOUT_INCLUDE_
54 union {
55 const char *n_name; /* symbol name (in memory) */
56 long n_strx; /* file string table offset (on disk) */
57 } n_un;
58 #else
59 const char *n_name; /* symbol name (in memory) */
60 #endif
61 unsigned char n_type; /* type defines */
62 char n_other; /* ".type" and binding information */
63 short n_desc; /* used by stab entries */
64 unsigned long n_value; /* address/value of the symbol */
67 #define n_hash n_desc /* used internally by ld(1); XXX */
70 * Defines for n_type.
72 #define N_UNDF 0x00 /* undefined */
73 #define N_ABS 0x02 /* absolute address */
74 #define N_TEXT 0x04 /* text segment */
75 #define N_DATA 0x06 /* data segment */
76 #define N_BSS 0x08 /* bss segment */
77 #define N_INDR 0x0a /* alias definition */
78 #define N_SIZE 0x0c /* pseudo type, defines a symbol's size */
79 #define N_COMM 0x12 /* common reference */
80 /* GNU extensions */
81 #define N_SETA 0x14 /* Absolute set element symbol */
82 #define N_SETT 0x16 /* Text set element symbol */
83 #define N_SETD 0x18 /* Data set element symbol */
84 #define N_SETB 0x1a /* Bss set element symbol */
85 #define N_SETV 0x1c /* Pointer to set vector in data area. */
86 /* end GNU extensions */
87 #define N_FN 0x1e /* file name (N_EXT on) */
88 #define N_WARN 0x1e /* warning message (N_EXT off) */
90 #define N_EXT 0x01 /* external (global) bit, OR'ed in */
91 #define N_TYPE 0x1e /* mask for all the type bits */
92 #define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */
95 * Defines for n_other. It contains the ".type" (AUX) field in the least
96 * significant 4 bits, and the binding (for weak symbols) in the most
97 * significant 4 bits.
99 #define N_AUX(p) ((p)->n_other & 0xf)
100 #define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf)
101 #define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf))
103 #define AUX_OBJECT 1 /* data object */
104 #define AUX_FUNC 2 /* function */
106 /*#define BIND_LOCAL 0 not used */
107 /*#define BIND_GLOBAL 1 not used */
108 #define BIND_WEAK 2 /* weak binding */
110 #define N_FORMAT "%08x" /* namelist value format; XXX */
112 #include <sys/cdefs.h>
114 __BEGIN_DECLS
115 int nlist (const char *, struct nlist *);
116 __END_DECLS
118 #endif /* !_NLIST_H_ */