commands/swifi/db_sym.h

   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
  27 #ifndef _DDB_DB_SYM_H_
  28 #define _DDB_DB_SYM_H_
  29
  30 #define db_printf printk
  31
  32 /*
  33  *      Author: Alessandro Forin, Carnegie Mellon University
  34  *      Date:   8/90
  35  */
  36
  37 /*
  38  * This module can handle multiple symbol tables
  39  */
  40 typedef struct {
  41         char            *name;          /* symtab name */
  42         char            *start;         /* symtab location */
  43         char            *end;
  44         char            *private;       /* optional machdep pointer */
  45 } db_symtab_t;
  46
  47 extern db_symtab_t      *db_last_symtab; /* where last symbol was found */
  48
  49 /*
  50  * Symbol representation is specific to the symtab style:
  51  * BSD compilers use dbx' nlist, other compilers might use
  52  * a different one
  53  */
  54 typedef char *          db_sym_t;       /* opaque handle on symbols */
  55 #define DB_SYM_NULL     ((db_sym_t)0)
  56
  57 /*
  58  * Non-stripped symbol tables will have duplicates, for instance
  59  * the same string could match a parameter name, a local var, a
  60  * global var, etc.
  61  * We are most concern with the following matches.
  62  */
  63 typedef int             db_strategy_t;  /* search strategy */
  64
  65 #define DB_STGY_ANY     0                       /* anything goes */
  66 #define DB_STGY_XTRN    1                       /* only external symbols */
  67 #define DB_STGY_PROC    2                       /* only procedures */
  68
  69 extern boolean_t        db_qualify_ambiguous_names;
  70                                         /* if TRUE, check across symbol tables
  71                                          * for multiple occurrences of a name.
  72                                          * Might slow down quite a bit */
  73
  74 /*
  75  * Functions exported by the symtable module
  76  */
  77 void            db_add_symbol_table __P((char *, char *, char *, char *));
  78                                         /* extend the list of symbol tables */
  79
  80 db_sym_t        db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *));
  81                                         /* find symbol given value */
  82
  83 void            db_symbol_values __P((db_sym_t, 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 __P((char *, char *, char));
  95                                         /* strcmp, modulo leading char */
  96
  97 void            db_printsym __P((db_expr_t, db_strategy_t));
  98                                         /* print closest symbol to a value */
  99
 100 int             db_sym_numargs __P((db_sym_t, int *, char **));
 101
 102 boolean_t       X_db_line_at_pc __P((db_symtab_t *symtab, db_sym_t cursym,
 103                                      char **filename, int *linenum,
 104                                      db_expr_t off));
 105 db_sym_t        X_db_lookup __P((db_symtab_t *stab, char *symstr));
 106 db_sym_t        X_db_search_symbol __P((db_symtab_t *symtab, db_addr_t off,
 107                                         db_strategy_t strategy,
 108                                         db_expr_t *diffp));
 109 int             X_db_sym_numargs __P((db_symtab_t *, db_sym_t, int *,
 110                                       char **));
 111 void            X_db_symbol_values __P((db_sym_t sym, char **namep,
 112                                         db_expr_t *valuep));
 113 unsigned long
 114 find_faulty_instr(db_expr_t off, int type, int *instr_len);
 115
 116 #endif /* !_DDB_DB_SYM_H_ */