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/ddb/db_aout.h

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    1 /*      $NetBSD: db_aout.h,v 1.2 2003/08/07 16:30:49 agc Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 1991, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  * (c) UNIX System Laboratories, Inc.
    7  * All or some portions of this file are derived from material licensed
    8  * to the University of California by American Telephone and Telegraph
    9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   10  * the permission of UNIX System Laboratories, Inc.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  */
   36 
   37 /*
   38  * This is an in-line expansion of "a.out.h" customized for ddb.
   39  */
   40 
   41 #ifndef _DB_AOUT_H_
   42 #define _DB_AOUT_H_
   43 
   44 /*
   45  *      @(#)nlist.h     8.2 (Berkeley) 1/21/94
   46  */
   47 
   48 /*
   49  * Symbol table entry format.  The #ifdef's are so that programs including
   50  * nlist.h can initialize nlist structures statically.
   51  */
   52 struct nlist {
   53         union {
   54                 char *n_name;   /* symbol name (in memory) */
   55                 long n_strx;    /* file string table offset (on disk) */
   56         } n_un;
   57 
   58 #define N_UNDF  0x00            /* undefined */
   59 #define N_ABS   0x02            /* absolute address */
   60 #define N_TEXT  0x04            /* text segment */
   61 #define N_DATA  0x06            /* data segment */
   62 #define N_BSS   0x08            /* bss segment */
   63 #define N_INDR  0x0a            /* alias definition */
   64 #define N_SIZE  0x0c            /* pseudo type, defines a symbol's size */
   65 #define N_COMM  0x12            /* common reference */
   66 #define N_FN    0x1e            /* file name (N_EXT on) */
   67 
   68 #define N_EXT   0x01            /* external (global) bit, OR'ed in */
   69 #define N_TYPE  0x1e            /* mask for all the type bits */
   70         unsigned char n_type;   /* type defines */
   71 
   72         char n_other;           /* spare */
   73 #define n_hash  n_desc          /* used internally by ld(1); XXX */
   74         short n_desc;           /* used by stab entries */
   75         unsigned long n_value;  /* address/value of the symbol */
   76 };
   77 
   78 #define N_FORMAT        "%08x"  /* namelist value format; XXX */
   79 #define N_STAB          0x0e0   /* mask for debugger symbols -- stab(5) */
   80 
   81 /* End nlist.h */
   82 
   83 /*
   84  *      @(#)stab.h      5.2 (Berkeley) 4/4/91
   85  */
   86 
   87 /*
   88  * The following are symbols used by various debuggers and by the Pascal
   89  * compiler.  Each of them must have one (or more) of the bits defined by
   90  * the N_STAB mask set.
   91  */
   92 
   93 #define N_GSYM          0x20    /* global symbol */
   94 #define N_FNAME         0x22    /* F77 function name */
   95 #define N_FUN           0x24    /* procedure name */
   96 #define N_STSYM         0x26    /* data segment variable */
   97 #define N_LCSYM         0x28    /* bss segment variable */
   98 #define N_MAIN          0x2a    /* main function name */
   99 #define N_PC            0x30    /* global Pascal symbol */
  100 #define N_RSYM          0x40    /* register variable */
  101 #define N_SLINE         0x44    /* text segment line number */
  102 #define N_DSLINE        0x46    /* data segment line number */
  103 #define N_BSLINE        0x48    /* bss segment line number */
  104 #define N_SSYM          0x60    /* structure/union element */
  105 #define N_SO            0x64    /* main source file name */
  106 #define N_LSYM          0x80    /* stack variable */
  107 #define N_BINCL         0x82    /* include file beginning */
  108 #define N_SOL           0x84    /* included source file name */
  109 #define N_PSYM          0xa0    /* parameter variable */
  110 #define N_EINCL         0xa2    /* include file end */
  111 #define N_ENTRY         0xa4    /* alternate entry point */
  112 #define N_LBRAC         0xc0    /* left bracket */
  113 #define N_EXCL          0xc2    /* deleted include file */
  114 #define N_RBRAC         0xe0    /* right bracket */
  115 #define N_BCOMM         0xe2    /* begin common */
  116 #define N_ECOMM         0xe4    /* end common */
  117 #define N_ECOML         0xe8    /* end common (local name) */
  118 #define N_LENG          0xfe    /* length of preceding entry */
  119 
  120 #endif /* !_DB_AOUT_H_ */

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