| /*- |
| * Copyright (c) 1991, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * (c) UNIX System Laboratories, Inc. |
| * All or some portions of this file are derived from material licensed |
| * to the University of California by American Telephone and Telegraph |
| * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| * the permission of UNIX System Laboratories, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)nlist.h 8.2 (Berkeley) 1/21/94 |
| * |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _SYS_NLIST_AOUT_H_ |
| #define _SYS_NLIST_AOUT_H_ |
| |
| /* |
| * Symbol table entries in a.out files. |
| */ |
| |
| /* |
| * Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that |
| * programs including nlist.h can initialize nlist structures |
| * statically. |
| */ |
| struct nlist { |
| #ifdef _AOUT_INCLUDE_ |
| union { |
| const char *n_name; /* symbol name (in memory) */ |
| long n_strx; /* file string table offset (on disk) */ |
| } n_un; |
| #else |
| const char *n_name; /* symbol name (in memory) */ |
| #endif |
| unsigned char n_type; /* type defines */ |
| char n_other; /* ".type" and binding information */ |
| short n_desc; /* used by stab entries */ |
| unsigned long n_value; /* address/value of the symbol */ |
| }; |
| |
| #define n_hash n_desc /* used internally by ld(1); XXX */ |
| |
| /* |
| * Defines for n_type. |
| */ |
| #define N_UNDF 0x00 /* undefined */ |
| #define N_ABS 0x02 /* absolute address */ |
| #define N_TEXT 0x04 /* text segment */ |
| #define N_DATA 0x06 /* data segment */ |
| #define N_BSS 0x08 /* bss segment */ |
| #define N_INDR 0x0a /* alias definition */ |
| #define N_SIZE 0x0c /* pseudo type, defines a symbol's size */ |
| #define N_COMM 0x12 /* common reference */ |
| /* GNU extensions */ |
| #define N_SETA 0x14 /* Absolute set element symbol */ |
| #define N_SETT 0x16 /* Text set element symbol */ |
| #define N_SETD 0x18 /* Data set element symbol */ |
| #define N_SETB 0x1a /* Bss set element symbol */ |
| #define N_SETV 0x1c /* Pointer to set vector in data area. */ |
| /* end GNU extensions */ |
| #define N_FN 0x1e /* file name (N_EXT on) */ |
| #define N_WARN 0x1e /* warning message (N_EXT off) */ |
| |
| #define N_EXT 0x01 /* external (global) bit, OR'ed in */ |
| #define N_TYPE 0x1e /* mask for all the type bits */ |
| #define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */ |
| |
| /* |
| * Defines for n_other. It contains the ".type" (AUX) field in the least |
| * significant 4 bits, and the binding (for weak symbols) in the most |
| * significant 4 bits. |
| */ |
| #define N_AUX(p) ((p)->n_other & 0xf) |
| #define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf) |
| #define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf)) |
| |
| #define AUX_OBJECT 1 /* data object */ |
| #define AUX_FUNC 2 /* function */ |
| |
| /*#define BIND_LOCAL 0 not used */ |
| /*#define BIND_GLOBAL 1 not used */ |
| #define BIND_WEAK 2 /* weak binding */ |
| |
| #define N_FORMAT "%08x" /* namelist value format; XXX */ |
| |
| #endif /* !_SYS_NLIST_AOUT_H_ */ |