db_sym.h

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    1 /*
    2  * Mach Operating System
    3  * Copyright (c) 1991,1990 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
   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  Software.Distribution@CS.CMU.EDU
   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 the
   24  * rights to redistribute these changes.
   25  *
   26  * $FreeBSD: src/sys/ddb/db_sym.h,v 1.19 1999/08/28 00:41:10 peter Exp $
   27  * $DragonFly: src/sys/ddb/db_sym.h,v 1.4 2006/05/20 02:42:01 dillon Exp $
   28  */
   29 
   30 #ifndef _DDB_DB_SYM_H_
   31 #define _DDB_DB_SYM_H_
   32 
   33 #ifndef _DDB_DDB_H_
   34 #include <ddb/ddb.h>
   35 #endif
   36 
   37 /*
   38  *      Author: Alessandro Forin, Carnegie Mellon University
   39  *      Date:   8/90
   40  */
   41 
   42 /*
   43  * This module can handle multiple symbol tables
   44  */
   45 typedef struct {
   46         char            *name;          /* symtab name */
   47         char            *start;         /* symtab location */
   48         char            *end;
   49         char            *private;       /* optional machdep pointer */
   50 } db_symtab_t;
   51 
   52 /*
   53  * Symbol representation is specific to the symtab style:
   54  * BSD compilers use dbx' nlist, other compilers might use
   55  * a different one
   56  */
   57 typedef char *          db_sym_t;       /* opaque handle on symbols */
   58 typedef const char *    c_db_sym_t;     /* opaque handle on symbols */
   59 #define DB_SYM_NULL     ((db_sym_t)0)
   60 #define C_DB_SYM_NULL   ((c_db_sym_t)0)
   61 
   62 /*
   63  * Non-stripped symbol tables will have duplicates, for instance
   64  * the same string could match a parameter name, a local var, a
   65  * global var, etc.
   66  * We are most concern with the following matches.
   67  */
   68 typedef int             db_strategy_t;  /* search strategy */
   69 
   70 #define DB_STGY_ANY     0                       /* anything goes */
   71 #define DB_STGY_XTRN    1                       /* only external symbols */
   72 #define DB_STGY_PROC    2                       /* only procedures */
   73 
   74 /*
   75  * Functions exported by the symtable module
   76  */
   77 void            db_add_symbol_table (char *, char *, char *, char *);
   78                                         /* extend the list of symbol tables */
   79 
   80 c_db_sym_t      db_search_symbol (db_addr_t, db_strategy_t, db_expr_t *);
   81                                         /* find symbol given value */
   82 
   83 void            db_symbol_values (c_db_sym_t, const char **, db_expr_t *);
   84                                         /* return name and value of symbol */
   85 
   86 #define db_find_sym_and_offset(val,namep,offp)  \
   87         db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
   88                                         /* find name&value given approx val */
   89 
   90 #define db_find_xtrn_sym_and_offset(val,namep,offp)     \
   91         db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
   92                                         /* ditto, but no locals */
   93 
   94 int             db_eqname (const char *, const char *, int);
   95                                         /* strcmp, modulo leading char */
   96 
   97 void            db_printsym (db_expr_t, db_strategy_t);
   98                                         /* print closest symbol to a value */
   99 
  100 int             db_sym_numargs (c_db_sym_t, int *, char **);
  101 
  102 boolean_t       X_db_line_at_pc (db_symtab_t *symtab, c_db_sym_t cursym,
  103                                      char **filename, int *linenum,
  104                                      db_expr_t off);
  105 c_db_sym_t      X_db_lookup (db_symtab_t *stab, const char *symstr);
  106 c_db_sym_t      X_db_search_symbol (db_symtab_t *symtab, db_addr_t off,
  107                                         db_strategy_t strategy,
  108                                         db_expr_t *diffp);
  109 int             X_db_sym_numargs (db_symtab_t *, c_db_sym_t, int *,
  110                                       char **);
  111 void            X_db_symbol_values (db_symtab_t *symtab,
  112                                         c_db_sym_t sym, const char **namep,
  113                                         db_expr_t *valuep);
  114 
  115 #endif /* !_DDB_DB_SYM_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/ddb/db_sym.h

FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_sym.h