function to discover which registers the expression uses. */
extern struct agent_expr *gen_trace_for_expr (CORE_ADDR, struct expression *);
+extern struct agent_expr *gen_trace_for_var (CORE_ADDR, struct symbol *);
+
extern struct agent_expr *gen_eval_for_expr (CORE_ADDR, struct expression *);
#endif /* AX_GDB_H */