The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/nlist_aout.h

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    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/sys/sys/nlist_aout.h,v 1.3.2.1 1999/09/05 11:14:13 peter Exp $
   41  */
   42 
   43 #ifndef _NLIST_H_
   44 #define _NLIST_H_
   45 
   46 /*
   47  * Symbol table entry format.  The #ifdef's are so that programs including
   48  * nlist.h can initialize nlist structures statically.
   49  */
   50 struct nlist {
   51 #ifdef _AOUT_INCLUDE_
   52         union {
   53                 char *n_name;   /* symbol name (in memory) */
   54                 long n_strx;    /* file string table offset (on disk) */
   55         } n_un;
   56 #else
   57         char *n_name;           /* symbol name (in memory) */
   58 #endif
   59 
   60 #define N_UNDF  0x00            /* undefined */
   61 #define N_ABS   0x02            /* absolute address */
   62 #define N_TEXT  0x04            /* text segment */
   63 #define N_DATA  0x06            /* data segment */
   64 #define N_BSS   0x08            /* bss segment */
   65 #define N_INDR  0x0a            /* alias definition */
   66 #define N_SIZE  0x0c            /* pseudo type, defines a symbol's size */
   67 #define N_COMM  0x12            /* common reference */
   68 /* GNU extensions */
   69 #define N_SETA  0x14            /* Absolute set element symbol */
   70 #define N_SETT  0x16            /* Text set element symbol */
   71 #define N_SETD  0x18            /* Data set element symbol */
   72 #define N_SETB  0x1a            /* Bss set element symbol */
   73 #define N_SETV  0x1c            /* Pointer to set vector in data area. */
   74 /* end GNU extensions */
   75 #define N_FN    0x1e            /* file name (N_EXT on) */
   76 #define N_WARN  0x1e            /* warning message (N_EXT off) */
   77 
   78 #define N_EXT   0x01            /* external (global) bit, OR'ed in */
   79 #define N_TYPE  0x1e            /* mask for all the type bits */
   80         unsigned char n_type;   /* type defines */
   81 
   82         char n_other;           /* spare */
   83 #define n_hash  n_desc          /* used internally by ld(1); XXX */
   84         short n_desc;           /* used by stab entries */
   85         unsigned long n_value;  /* address/value of the symbol */
   86 };
   87 
   88 #define N_FORMAT        "%08x"  /* namelist value format; XXX */
   89 #define N_STAB          0x0e0   /* mask for debugger symbols -- stab(5) */
   90 
   91 #include <sys/cdefs.h>
   92 
   93 __BEGIN_DECLS
   94 int nlist __P((const char *, struct nlist *));
   95 __END_DECLS
   96 
   97 #endif /* !_NLIST_H_ */

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