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