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4 * Mach Operating System
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31 #ifndef _DDB_DB_SYM_H_
32 #define _DDB_DB_SYM_H_
35 * Author: Alessandro Forin, Carnegie Mellon University
40 * This module can handle multiple symbol tables
43 char *name; /* symtab name */
44 char *start; /* symtab location */
46 char *private; /* optional machdep pointer */
50 * Symbol representation is specific to the symtab style:
51 * BSD compilers use dbx' nlist, other compilers might use
54 typedef char * db_sym_t; /* opaque handle on symbols */
55 typedef const char * c_db_sym_t; /* const opaque handle on symbols */
56 #define DB_SYM_NULL ((db_sym_t)0)
57 #define C_DB_SYM_NULL ((c_db_sym_t)0)
60 * Non-stripped symbol tables will have duplicates, for instance
61 * the same string could match a parameter name, a local var, a
63 * We are most concern with the following matches.
65 typedef int db_strategy_t; /* search strategy */
67 #define DB_STGY_ANY 0 /* anything goes */
68 #define DB_STGY_XTRN 1 /* only external symbols */
69 #define DB_STGY_PROC 2 /* only procedures */
72 * Functions exported by the symtable module
74 void db_add_symbol_table(char *, char *, char *, char *);
75 /* extend the list of symbol tables */
77 c_db_sym_t db_search_symbol(db_addr_t, db_strategy_t, db_expr_t *);
78 /* find symbol given value */
80 void db_symbol_values(c_db_sym_t, const char **, db_expr_t *);
81 /* return name and value of symbol */
83 #define db_find_sym_and_offset(val,namep,offp) \
84 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
85 /* find name&value given approx val */
87 #define db_find_xtrn_sym_and_offset(val,namep,offp) \
88 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
89 /* ditto, but no locals */
91 bool db_eqname(const char *, const char *, int);
92 /* strcmp, modulo leading char */
94 void db_printsym(db_expr_t, db_strategy_t);
95 /* print closest symbol to a value */
97 bool db_sym_numargs(c_db_sym_t, int *, char **);
99 bool X_db_line_at_pc(db_symtab_t *symtab, c_db_sym_t cursym,
100 char **filename, int *linenum, db_expr_t off);
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, db_expr_t *diffp);
104 bool X_db_sym_numargs(db_symtab_t *, c_db_sym_t, int *, char **);
105 void X_db_symbol_values(db_symtab_t *symtab, c_db_sym_t sym,
106 const char **namep, db_expr_t *valuep);
108 void db_decode_syscall(struct thread *td, u_int number);
110 #endif /* !_DDB_DB_SYM_H_ */