osfmk/ddb/nlist.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * HISTORY
  27  *
  28  * Revision 1.1.1.1  1998/09/22 21:05:48  wsanchez
  29  * Import of Mac OS X kernel (~semeria)
  30  *
  31  * Revision 1.1.1.1  1998/03/07 02:26:09  wsanchez
  32  * Import of OSF Mach kernel (~mburg)
  33  *
  34  * Revision 1.1.11.2  1995/01/06  19:11:11  devrcs
  35  *      mk6 CR668 - 1.3b26 merge
  36  *      Add padding for alpha, make n_other unsigned,
  37  *      fix erroneous def of N_FN.
  38  *      [1994/10/14  03:40:03  dwm]
  39  *
  40  * Revision 1.1.11.1  1994/09/23  01:23:37  ezf
  41  *      change marker to not FREE
  42  *      [1994/09/22  21:11:49  ezf]
  43  *
  44  * Revision 1.1.4.3  1993/07/27  18:28:42  elliston
  45  *      Add ANSI prototypes.  CR #9523.
  46  *      [1993/07/27  18:13:44  elliston]
  47  *
  48  * Revision 1.1.4.2  1993/06/02  23:13:34  jeffc
  49  *      Added to OSF/1 R1.3 from NMK15.0.
  50  *      [1993/06/02  20:58:08  jeffc]
  51  *
  52  * Revision 1.1  1992/09/30  02:24:29  robert
  53  *      Initial revision
  54  *
  55  * $EndLog$
  56  */
  57 /* CMU_HIST */
  58 /*
  59  * Revision 2.4  91/05/14  15:38:20  mrt
  60  *      Correcting copyright
  61  *
  62  * Revision 2.3  91/02/05  17:07:42  mrt
  63  *      Changed to new Mach copyright
  64  *      [91/01/31  16:20:26  mrt]
  65  *
  66  * 11-Aug-88  David Golub (dbg) at Carnegie-Mellon University
  67  *      Added n_un, n_strx definitions for kernel debugger (from
  68  *      a.out.h).
  69  *
  70  */
  71 /* CMU_ENDHIST */
  72 /*
  73  * Mach Operating System
  74  * Copyright (c) 1991 Carnegie Mellon University
  75  * All Rights Reserved.
  76  *
  77  * Permission to use, copy, modify and distribute this software and its
  78  * documentation is hereby granted, provided that both the copyright
  79  * notice and this permission notice appear in all copies of the
  80  * software, derivative works or modified versions, and any portions
  81  * thereof, and that both notices appear in supporting documentation.
  82  *
  83  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  84  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  85  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  86  *
  87  * Carnegie Mellon requests users of this software to return to
  88  *
  89  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  90  *  School of Computer Science
  91  *  Carnegie Mellon University
  92  *  Pittsburgh PA 15213-3890
  93  *
  94  * any improvements or extensions that they make and grant Carnegie Mellon
  95  * the rights to redistribute these changes.
  96  */
  97 /*
  98  */
  99 /*
 100  *  nlist.h - symbol table entry  structure for an a.out file
 101  *  derived from FSF's a.out.gnu.h
 102  *
 103  */
 104
 105 #ifndef _DDB_NLIST_H_
 106 #define _DDB_NLIST_H_
 107
 108 struct  nlist {
 109         union n_un {
 110             char        *n_name;        /* symbol name */
 111             long        n_strx;         /* index into file string table */
 112         } n_un;
 113         unsigned char n_type;   /* type flag, i.e. N_TEXT etc; see below */
 114         unsigned char n_other;  /* unused */
 115         short   n_desc;         /* see <stab.h> */
 116 #if     defined(__alpha)
 117         int     n_pad;          /* alignment, used to carry framesize info */
 118 #endif
 119         vm_offset_t n_value;    /* value of this symbol (or sdb offset) */
 120 };
 121
 122 /*
 123  * Simple values for n_type.
 124  */
 125 #define N_UNDF  0               /* undefined */
 126 #define N_ABS   2               /* absolute */
 127 #define N_TEXT  4               /* text */
 128 #define N_DATA  6               /* data */
 129 #define N_BSS   8               /* bss */
 130 #define N_FN    0x1e            /* file name symbol */
 131 #define N_EXT   1               /* external bit, or'ed in */
 132 #define N_TYPE  0x1e            /* mask for all the type bits */
 133 #define N_STAB  0xe0            /* if any of these bits set, a SDB entry */
 134
 135 #endif  /* !_DDB_NLIST_H_ */