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984263bc MD |
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. | |
9 | * | |
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. All advertising materials mentioning features or use of this software | |
19 | * must display the following acknowledgement: | |
20 | * This product includes software developed by the University of | |
21 | * California, Berkeley and its contributors. | |
22 | * 4. Neither the name of the University nor the names of its contributors | |
23 | * may be used to endorse or promote products derived from this software | |
24 | * without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
36 | * SUCH DAMAGE. | |
37 | * | |
38 | * @(#)nlist.h 8.2 (Berkeley) 1/21/94 | |
39 | * | |
40 | * $FreeBSD: src/include/nlist.h,v 1.7 1999/08/27 23:44:51 peter Exp $ | |
ed3b1cc3 | 41 | * $DragonFly: src/include/nlist.h,v 1.4 2004/11/18 12:38:43 joerg Exp $ |
984263bc MD |
42 | */ |
43 | ||
44 | #ifndef _NLIST_H_ | |
45 | #define _NLIST_H_ | |
46 | ||
47 | /* | |
48 | * Symbol table entries in a.out files. | |
49 | */ | |
50 | ||
51 | /* | |
52 | * Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that | |
53 | * programs including nlist.h can initialize nlist structures | |
54 | * statically. | |
55 | */ | |
56 | struct nlist { | |
57 | #ifdef _AOUT_INCLUDE_ | |
58 | union { | |
ed3b1cc3 JS |
59 | const char *n_name; /* symbol name (in memory) */ |
60 | long n_strx; /* file string table offset (on disk) */ | |
984263bc MD |
61 | } n_un; |
62 | #else | |
ed3b1cc3 | 63 | const char *n_name; /* symbol name (in memory) */ |
984263bc MD |
64 | #endif |
65 | unsigned char n_type; /* type defines */ | |
66 | char n_other; /* ".type" and binding information */ | |
67 | short n_desc; /* used by stab entries */ | |
68 | unsigned long n_value; /* address/value of the symbol */ | |
69 | }; | |
70 | ||
71 | #define n_hash n_desc /* used internally by ld(1); XXX */ | |
72 | ||
73 | /* | |
74 | * Defines for n_type. | |
75 | */ | |
76 | #define N_UNDF 0x00 /* undefined */ | |
77 | #define N_ABS 0x02 /* absolute address */ | |
78 | #define N_TEXT 0x04 /* text segment */ | |
79 | #define N_DATA 0x06 /* data segment */ | |
80 | #define N_BSS 0x08 /* bss segment */ | |
81 | #define N_INDR 0x0a /* alias definition */ | |
82 | #define N_SIZE 0x0c /* pseudo type, defines a symbol's size */ | |
83 | #define N_COMM 0x12 /* common reference */ | |
84 | /* GNU extensions */ | |
85 | #define N_SETA 0x14 /* Absolute set element symbol */ | |
86 | #define N_SETT 0x16 /* Text set element symbol */ | |
87 | #define N_SETD 0x18 /* Data set element symbol */ | |
88 | #define N_SETB 0x1a /* Bss set element symbol */ | |
89 | #define N_SETV 0x1c /* Pointer to set vector in data area. */ | |
90 | /* end GNU extensions */ | |
91 | #define N_FN 0x1e /* file name (N_EXT on) */ | |
92 | #define N_WARN 0x1e /* warning message (N_EXT off) */ | |
93 | ||
94 | #define N_EXT 0x01 /* external (global) bit, OR'ed in */ | |
95 | #define N_TYPE 0x1e /* mask for all the type bits */ | |
96 | #define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */ | |
97 | ||
98 | /* | |
99 | * Defines for n_other. It contains the ".type" (AUX) field in the least | |
100 | * significant 4 bits, and the binding (for weak symbols) in the most | |
101 | * significant 4 bits. | |
102 | */ | |
103 | #define N_AUX(p) ((p)->n_other & 0xf) | |
104 | #define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf) | |
105 | #define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf)) | |
106 | ||
107 | #define AUX_OBJECT 1 /* data object */ | |
108 | #define AUX_FUNC 2 /* function */ | |
109 | ||
110 | /*#define BIND_LOCAL 0 not used */ | |
111 | /*#define BIND_GLOBAL 1 not used */ | |
112 | #define BIND_WEAK 2 /* weak binding */ | |
113 | ||
114 | #define N_FORMAT "%08x" /* namelist value format; XXX */ | |
115 | ||
116 | #include <sys/cdefs.h> | |
117 | ||
118 | __BEGIN_DECLS | |
7c4af8e1 | 119 | int nlist (const char *, struct nlist *); |
984263bc MD |
120 | __END_DECLS |
121 | ||
122 | #endif /* !_NLIST_H_ */ |