;;;; files for more information.
(in-package "SB!VM")
-\f
+
+;;;; Additional constants
+
+;;; NUMBER-STACK-DISPLACEMENT
+;;;
+;;; The number of bytes reserved above the number stack pointer. These
+;;; slots are required by architecture for a place to spill register windows.
+;;;
+;;; FIXME: Where is this used?
+(def!constant number-stack-displacement
+ (* 16 n-word-bytes))
+
;;;; Define the registers
(eval-when (:compile-toplevel :load-toplevel :execute)