+extern void gen_expr (struct expression *exp, union exp_element **pc,
+ struct agent_expr *ax, struct axs_value *value);
+
+extern void require_rvalue (struct agent_expr *ax, struct axs_value *value);
+
+struct format_piece;
+extern struct agent_expr *gen_printf (CORE_ADDR, struct gdbarch *,
+ CORE_ADDR, LONGEST, const char *, int,
+ struct format_piece *,
+ int, struct expression **);