Annotation of Gnu-Mach/ddb/nlist.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1991 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  *
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  *
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  *
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  *
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon 
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *  nlist.h - symbol table entry  structure for an a.out file
                     28:  *  derived from FSF's a.out.gnu.h
                     29:  *
                     30:  */
                     31: 
                     32: #ifndef _DDB_NLIST_H_
                     33: #define _DDB_NLIST_H_
                     34: 
                     35: struct nlist {
                     36:        union n_un {
                     37:            char        *n_name;        /* symbol name */
                     38:            long        n_strx;         /* index into file string table */
                     39:        } n_un;
                     40:        unsigned char n_type;   /* type flag, i.e. N_TEXT etc; see below */
                     41:        unsigned char n_other;  /* machdep uses */
                     42:        short   n_desc;         /* see <stab.h> */
                     43: #if alpha
                     44:        int     n_pad;          /* alignment, used to carry framesize info */
                     45: #endif
                     46:        vm_offset_t n_value;    /* value of this symbol (or sdb offset) */
                     47: };
                     48: 
                     49: /*
                     50:  * Simple values for n_type.
                     51:  */
                     52: #define        N_UNDF  0               /* undefined */
                     53: #define        N_ABS   2               /* absolute */
                     54: #define        N_TEXT  4               /* text */
                     55: #define        N_DATA  6               /* data */
                     56: #define        N_BSS   8               /* bss */
                     57: #define        N_FN    0x1f            /* file name symbol */
                     58: #define        N_EXT   1               /* external bit, or'ed in */
                     59: #define        N_TYPE  0x1e            /* mask for all the type bits */
                     60: #define        N_STAB  0xe0            /* if any of these bits set, a SDB entry */
                     61: 
                     62: 
                     63: #endif /* _DDB_NLIST_H_ */

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