| | 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 $ |
| | 41 | * $DragonFly: src/include/nlist.h,v 1.4 2004/11/18 12:38:43 joerg Exp $ |
| | 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 { |
| | 59 | const char *n_name; /* symbol name (in memory) */ |
| | 60 | long n_strx; /* file string table offset (on disk) */ |
| | 61 | } n_un; |
| | 62 | #else |
| | 63 | const char *n_name; /* symbol name (in memory) */ |
| | 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 |
| | 119 | int nlist (const char *, struct nlist *); |
| | 120 | __END_DECLS |
| | 121 | |
| | 122 | #endif /* !_NLIST_H_ */ |
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