+(defun alien-funcall-stdcall (alien &rest args)
+ #!+sb-doc
+ "Call the foreign function ALIEN with the specified arguments. ALIEN's
+ type specifies the argument and result types."
+ (declare (type alien-value alien))
+ (let ((type (alien-value-type alien)))
+ (typecase type
+ (alien-pointer-type
+ (apply #'alien-funcall-stdcall (deref alien) args))
+ (alien-fun-type
+ (unless (= (length (alien-fun-type-arg-types type))
+ (length args))
+ (error "wrong number of arguments for ~S~%expected ~W, got ~W"
+ type
+ (length (alien-fun-type-arg-types type))
+ (length args)))
+ (let ((stub (alien-fun-type-stub type)))
+ (unless stub
+ (setf stub
+ (let ((fun (gensym))
+ (parms (make-gensym-list (length args))))
+ (compile nil
+ `(lambda (,fun ,@parms)
+ (declare (optimize (sb!c::insert-step-conditions 0)))
+ (declare (type (alien ,type) ,fun))
+ (alien-funcall-stdcall ,fun ,@parms)))))
+ (setf (alien-fun-type-stub type) stub))
+ (apply stub alien args)))
+ (t
+ (error "~S is not an alien function." alien)))))
+