Make the disassembler understand instruction prefixes.

[sbcl.git] / src / compiler / disassem.lisp

diff --git a/src/compiler/disassem.lisp b/src/compiler/disassem.lisp
index bc0f428..1b9669a 100644 (file)
--- a/src/compiler/disassem.lisp
+++ b/src/compiler/disassem.lisp
@@ -1596,7 +1596,7 @@
   ;; offset of next position
   (next-offs 0 :type offset)
   ;; a sap pointing to our segment
-  (segment-sap (missing-arg) :type sb!sys:system-area-pointer)
+  (segment-sap nil :type (or null sb!sys:system-area-pointer))
   ;; the current segment
   (segment nil :type (or null segment))
   ;; what to align to in most cases
@@ -1605,8 +1605,8 @@
               :type (member :big-endian :little-endian))
   ;; for user code to hang stuff off of
   (properties nil :type list)
-  ;; for user code to hang stuff off of, cleared each time before an
-  ;; instruction is processed
+  ;; for user code to hang stuff off of, cleared each time after a
+  ;; non-prefix instruction is processed
   (inst-properties nil :type list)
   (filtered-values (make-array max-filtered-value-index)
                    :type filtered-value-vector)