2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
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19 * School of Computer Science
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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 1.3 2003/08/27 10:47:13 rob Exp $
30 #ifndef _DDB_DB_SYM_H_
31 #define _DDB_DB_SYM_H_
34 * Author: Alessandro Forin, Carnegie Mellon University
39 * This module can handle multiple symbol tables
42 char *name; /* symtab name */
43 char *start; /* symtab location */
45 char *private; /* optional machdep pointer */
49 * Symbol representation is specific to the symtab style:
50 * BSD compilers use dbx' nlist, other compilers might use
53 typedef char * db_sym_t; /* opaque handle on symbols */
54 typedef const char * c_db_sym_t; /* opaque handle on symbols */
55 #define DB_SYM_NULL ((db_sym_t)0)
56 #define C_DB_SYM_NULL ((c_db_sym_t)0)
59 * Non-stripped symbol tables will have duplicates, for instance
60 * the same string could match a parameter name, a local var, a
62 * We are most concern with the following matches.
64 typedef int db_strategy_t; /* search strategy */
66 #define DB_STGY_ANY 0 /* anything goes */
67 #define DB_STGY_XTRN 1 /* only external symbols */
68 #define DB_STGY_PROC 2 /* only procedures */
71 * Functions exported by the symtable module
73 void db_add_symbol_table (char *, char *, char *, char *);
74 /* extend the list of symbol tables */
76 c_db_sym_t db_search_symbol (db_addr_t, db_strategy_t, db_expr_t *);
77 /* find symbol given value */
79 void db_symbol_values (c_db_sym_t, const char **, db_expr_t *);
80 /* return name and value of symbol */
82 #define db_find_sym_and_offset(val,namep,offp) \
83 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
84 /* find name&value given approx val */
86 #define db_find_xtrn_sym_and_offset(val,namep,offp) \
87 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
88 /* ditto, but no locals */
90 int db_eqname (const char *, const char *, int);
91 /* strcmp, modulo leading char */
93 void db_printsym (db_expr_t, db_strategy_t);
94 /* print closest symbol to a value */
96 int db_sym_numargs (c_db_sym_t, int *, char **);
98 boolean_t X_db_line_at_pc (db_symtab_t *symtab, c_db_sym_t cursym,
99 char **filename, int *linenum,
101 c_db_sym_t X_db_lookup (db_symtab_t *stab, const char *symstr);
102 c_db_sym_t X_db_search_symbol (db_symtab_t *symtab, db_addr_t off,
103 db_strategy_t strategy,
105 int X_db_sym_numargs (db_symtab_t *, c_db_sym_t, int *,
107 void X_db_symbol_values (db_symtab_t *symtab,
108 c_db_sym_t sym, const char **namep,
111 #endif /* !_DDB_DB_SYM_H_ */