;;; has my gratitude.) (FIXME: Maybe this should be me..)
(eval-when (:compile-toplevel :load-toplevel :execute)
(def!constant kludge-nondeterministic-catch-block-size
- #!-win32 6 #!+win32 8))
+ #!-win32 5 #!+win32 7))
(!define-storage-classes
\f
;;;; miscellaneous function call parameters
-;;; offsets of special stack frame locations
-(def!constant ocfp-save-offset 0)
-(def!constant return-pc-save-offset 1)
+;;; Offsets of special stack frame locations relative to EBP.
+;;;
+;;; Consider the standard prologue PUSH EBP; MOV EBP, ESP: the return
+;;; address is at EBP+4, the old control stack frame pointer is at
+;;; EBP, the magic 3rd slot is at EBP-4. Then come the locals from
+;;; EBP-8 on.
+(def!constant return-pc-save-offset 0)
+(def!constant ocfp-save-offset 1)
+;;; Let SP be the stack pointer before CALLing, and FP is the frame
+;;; pointer after the standard prologue. SP +
+;;; FRAME-WORD-OFFSET(SP->FP-OFFSET + I) = FP + FRAME-WORD-OFFSET(I).
+(def!constant sp->fp-offset 2)
(declaim (inline frame-word-offset))
(defun frame-word-offset (index)
- (- (1+ index)))
+ (- (1- index)))
(declaim (inline frame-byte-offset))
(defun frame-byte-offset (index)