nlist.h revision 50473
11539Srgrimes/*- 21539Srgrimes * Copyright (c) 1991, 1993 31539Srgrimes * The Regents of the University of California. All rights reserved. 41539Srgrimes * (c) UNIX System Laboratories, Inc. 51539Srgrimes * All or some portions of this file are derived from material licensed 61539Srgrimes * to the University of California by American Telephone and Telegraph 71539Srgrimes * Co. or Unix System Laboratories, Inc. and are reproduced herein with 81539Srgrimes * the permission of UNIX System Laboratories, Inc. 91539Srgrimes * 101539Srgrimes * Redistribution and use in source and binary forms, with or without 111539Srgrimes * modification, are permitted provided that the following conditions 121539Srgrimes * are met: 131539Srgrimes * 1. Redistributions of source code must retain the above copyright 141539Srgrimes * notice, this list of conditions and the following disclaimer. 151539Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 161539Srgrimes * notice, this list of conditions and the following disclaimer in the 171539Srgrimes * documentation and/or other materials provided with the distribution. 181539Srgrimes * 3. All advertising materials mentioning features or use of this software 191539Srgrimes * must display the following acknowledgement: 201539Srgrimes * This product includes software developed by the University of 211539Srgrimes * California, Berkeley and its contributors. 221539Srgrimes * 4. Neither the name of the University nor the names of its contributors 231539Srgrimes * may be used to endorse or promote products derived from this software 241539Srgrimes * without specific prior written permission. 251539Srgrimes * 261539Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 271539Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 281539Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 291539Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 301539Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 311539Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 321539Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 331539Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 341539Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 351539Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 361539Srgrimes * SUCH DAMAGE. 371539Srgrimes * 381539Srgrimes * @(#)nlist.h 8.2 (Berkeley) 1/21/94 395207Snate * 4050473Speter * $FreeBSD: head/include/nlist.h 50473 1999-08-27 23:45:13Z peter $ 411539Srgrimes */ 421539Srgrimes 431539Srgrimes#ifndef _NLIST_H_ 441539Srgrimes#define _NLIST_H_ 451539Srgrimes 461539Srgrimes/* 4731584Sjdp * Symbol table entries in a.out files. 481539Srgrimes */ 4931584Sjdp 5031584Sjdp/* 5131584Sjdp * Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that 5231584Sjdp * programs including nlist.h can initialize nlist structures 5331584Sjdp * statically. 5431584Sjdp */ 551539Srgrimesstruct nlist { 561539Srgrimes#ifdef _AOUT_INCLUDE_ 571539Srgrimes union { 581539Srgrimes char *n_name; /* symbol name (in memory) */ 591539Srgrimes long n_strx; /* file string table offset (on disk) */ 601539Srgrimes } n_un; 611539Srgrimes#else 621539Srgrimes char *n_name; /* symbol name (in memory) */ 631539Srgrimes#endif 6431584Sjdp unsigned char n_type; /* type defines */ 6531584Sjdp char n_other; /* ".type" and binding information */ 6631584Sjdp short n_desc; /* used by stab entries */ 6731584Sjdp unsigned long n_value; /* address/value of the symbol */ 6831584Sjdp}; 691539Srgrimes 7031584Sjdp#define n_hash n_desc /* used internally by ld(1); XXX */ 7131584Sjdp 7231584Sjdp/* 7331584Sjdp * Defines for n_type. 7431584Sjdp */ 751539Srgrimes#define N_UNDF 0x00 /* undefined */ 761539Srgrimes#define N_ABS 0x02 /* absolute address */ 771539Srgrimes#define N_TEXT 0x04 /* text segment */ 781539Srgrimes#define N_DATA 0x06 /* data segment */ 791539Srgrimes#define N_BSS 0x08 /* bss segment */ 805207Snate#define N_INDR 0x0a /* alias definition */ 815207Snate#define N_SIZE 0x0c /* pseudo type, defines a symbol's size */ 821539Srgrimes#define N_COMM 0x12 /* common reference */ 8318589Speter/* GNU extensions */ 8418589Speter#define N_SETA 0x14 /* Absolute set element symbol */ 8518589Speter#define N_SETT 0x16 /* Text set element symbol */ 8618589Speter#define N_SETD 0x18 /* Data set element symbol */ 8718589Speter#define N_SETB 0x1a /* Bss set element symbol */ 8818589Speter#define N_SETV 0x1c /* Pointer to set vector in data area. */ 8918589Speter/* end GNU extensions */ 905207Snate#define N_FN 0x1e /* file name (N_EXT on) */ 915207Snate#define N_WARN 0x1e /* warning message (N_EXT off) */ 921539Srgrimes 931539Srgrimes#define N_EXT 0x01 /* external (global) bit, OR'ed in */ 941539Srgrimes#define N_TYPE 0x1e /* mask for all the type bits */ 9531584Sjdp#define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */ 961539Srgrimes 9731584Sjdp/* 9831584Sjdp * Defines for n_other. It contains the ".type" (AUX) field in the least 9931584Sjdp * significant 4 bits, and the binding (for weak symbols) in the most 10031584Sjdp * significant 4 bits. 10131584Sjdp */ 10231584Sjdp#define N_AUX(p) ((p)->n_other & 0xf) 10331584Sjdp#define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf) 10431584Sjdp#define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf)) 1051539Srgrimes 10631584Sjdp#define AUX_OBJECT 1 /* data object */ 10731584Sjdp#define AUX_FUNC 2 /* function */ 10831584Sjdp 10931584Sjdp/*#define BIND_LOCAL 0 not used */ 11031584Sjdp/*#define BIND_GLOBAL 1 not used */ 11131584Sjdp#define BIND_WEAK 2 /* weak binding */ 11231584Sjdp 1131539Srgrimes#define N_FORMAT "%08x" /* namelist value format; XXX */ 1141539Srgrimes 1151539Srgrimes#include <sys/cdefs.h> 1161539Srgrimes 1171539Srgrimes__BEGIN_DECLS 1181539Srgrimesint nlist __P((const char *, struct nlist *)); 1191539Srgrimes__END_DECLS 1201539Srgrimes 1211539Srgrimes#endif /* !_NLIST_H_ */ 122