osfmk/ddb/nlist.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * HISTORY
  28  *
  29  * Revision 1.1.1.1  1998/09/22 21:05:48  wsanchez
  30  * Import of Mac OS X kernel (~semeria)
  31  *
  32  * Revision 1.1.1.1  1998/03/07 02:26:09  wsanchez
  33  * Import of OSF Mach kernel (~mburg)
  34  *
  35  * Revision 1.1.11.2  1995/01/06  19:11:11  devrcs
  36  *      mk6 CR668 - 1.3b26 merge
  37  *      Add padding for alpha, make n_other unsigned,
  38  *      fix erroneous def of N_FN.
  39  *      [1994/10/14  03:40:03  dwm]
  40  *
  41  * Revision 1.1.11.1  1994/09/23  01:23:37  ezf
  42  *      change marker to not FREE
  43  *      [1994/09/22  21:11:49  ezf]
  44  *
  45  * Revision 1.1.4.3  1993/07/27  18:28:42  elliston
  46  *      Add ANSI prototypes.  CR #9523.
  47  *      [1993/07/27  18:13:44  elliston]
  48  *
  49  * Revision 1.1.4.2  1993/06/02  23:13:34  jeffc
  50  *      Added to OSF/1 R1.3 from NMK15.0.
  51  *      [1993/06/02  20:58:08  jeffc]
  52  *
  53  * Revision 1.1  1992/09/30  02:24:29  robert
  54  *      Initial revision
  55  *
  56  * $EndLog$
  57  */
  58 /* CMU_HIST */
  59 /*
  60  * Revision 2.4  91/05/14  15:38:20  mrt
  61  *      Correcting copyright
  62  *
  63  * Revision 2.3  91/02/05  17:07:42  mrt
  64  *      Changed to new Mach copyright
  65  *      [91/01/31  16:20:26  mrt]
  66  *
  67  * 11-Aug-88  David Golub (dbg) at Carnegie-Mellon University
  68  *      Added n_un, n_strx definitions for kernel debugger (from
  69  *      a.out.h).
  70  *
  71  */
  72 /* CMU_ENDHIST */
  73 /*
  74  * Mach Operating System
  75  * Copyright (c) 1991 Carnegie Mellon University
  76  * All Rights Reserved.
  77  *
  78  * Permission to use, copy, modify and distribute this software and its
  79  * documentation is hereby granted, provided that both the copyright
  80  * notice and this permission notice appear in all copies of the
  81  * software, derivative works or modified versions, and any portions
  82  * thereof, and that both notices appear in supporting documentation.
  83  *
  84  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  85  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  86  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  87  *
  88  * Carnegie Mellon requests users of this software to return to
  89  *
  90  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  91  *  School of Computer Science
  92  *  Carnegie Mellon University
  93  *  Pittsburgh PA 15213-3890
  94  *
  95  * any improvements or extensions that they make and grant Carnegie Mellon
  96  * the rights to redistribute these changes.
  97  */
  98 /*
  99  */
 100 /*
 101  *  nlist.h - symbol table entry  structure for an a.out file
 102  *  derived from FSF's a.out.gnu.h
 103  *
 104  */
 105
 106 #ifndef _DDB_NLIST_H_
 107 #define _DDB_NLIST_H_
 108
 109 struct  nlist {
 110         union n_un {
 111             char        *n_name;        /* symbol name */
 112             long        n_strx;         /* index into file string table */
 113         } n_un;
 114         unsigned char n_type;   /* type flag, i.e. N_TEXT etc; see below */
 115         unsigned char n_other;  /* unused */
 116         short   n_desc;         /* see <stab.h> */
 117 #if     defined(__alpha)
 118         int     n_pad;          /* alignment, used to carry framesize info */
 119 #endif
 120         vm_offset_t n_value;    /* value of this symbol (or sdb offset) */
 121 };
 122
 123 /*
 124  * Simple values for n_type.
 125  */
 126 #define N_UNDF  0               /* undefined */
 127 #define N_ABS   2               /* absolute */
 128 #define N_TEXT  4               /* text */
 129 #define N_DATA  6               /* data */
 130 #define N_BSS   8               /* bss */
 131 #define N_FN    0x1e            /* file name symbol */
 132 #define N_EXT   1               /* external bit, or'ed in */
 133 #define N_TYPE  0x1e            /* mask for all the type bits */
 134 #define N_STAB  0xe0            /* if any of these bits set, a SDB entry */
 135
 136 #endif  /* !_DDB_NLIST_H_ */