2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
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26 * $FreeBSD: src/sys/ddb/db_sym.h,v 1.19 1999/08/28 00:41:10 peter Exp $
29 #ifndef _DDB_DB_SYM_H_
30 #define _DDB_DB_SYM_H_
33 * Author: Alessandro Forin, Carnegie Mellon University
38 * This module can handle multiple symbol tables
41 char *name; /* symtab name */
42 char *start; /* symtab location */
44 char *private; /* optional machdep pointer */
48 * Symbol representation is specific to the symtab style:
49 * BSD compilers use dbx' nlist, other compilers might use
52 typedef char * db_sym_t; /* opaque handle on symbols */
53 typedef const char * c_db_sym_t; /* opaque handle on symbols */
54 #define DB_SYM_NULL ((db_sym_t)0)
55 #define C_DB_SYM_NULL ((c_db_sym_t)0)
58 * Non-stripped symbol tables will have duplicates, for instance
59 * the same string could match a parameter name, a local var, a
61 * We are most concern with the following matches.
63 typedef int db_strategy_t; /* search strategy */
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 */
70 * Functions exported by the symtable module
72 void db_add_symbol_table __P((char *, char *, char *, char *));
73 /* extend the list of symbol tables */
75 c_db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *));
76 /* find symbol given value */
78 void db_symbol_values __P((c_db_sym_t, const char **, db_expr_t *));
79 /* return name and value of symbol */
81 #define db_find_sym_and_offset(val,namep,offp) \
82 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
83 /* find name&value given approx val */
85 #define db_find_xtrn_sym_and_offset(val,namep,offp) \
86 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
87 /* ditto, but no locals */
89 int db_eqname __P((const char *, const char *, int));
90 /* strcmp, modulo leading char */
92 void db_printsym __P((db_expr_t, db_strategy_t));
93 /* print closest symbol to a value */
95 int db_sym_numargs __P((c_db_sym_t, int *, char **));
97 boolean_t X_db_line_at_pc __P((db_symtab_t *symtab, c_db_sym_t cursym,
98 char **filename, int *linenum,
100 c_db_sym_t X_db_lookup __P((db_symtab_t *stab, const char *symstr));
101 c_db_sym_t X_db_search_symbol __P((db_symtab_t *symtab, db_addr_t off,
102 db_strategy_t strategy,
104 int X_db_sym_numargs __P((db_symtab_t *, c_db_sym_t, int *,
106 void X_db_symbol_values __P((db_symtab_t *symtab,
107 c_db_sym_t sym, const char **namep,
110 #endif /* !_DDB_DB_SYM_H_ */