From: Stephen Adams <edu/mit/csail/zurich/adams>
Date: Wed, 8 Mar 1995 13:38:51 +0000 (+0000)
Subject: Added rule for storing a zero byte.
X-Git-Tag: 20090517-FFI~6555
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=a68b97dd58cad1e3d153d790ab51659f7272f6b4;p=mit-scheme.git

Added rule for storing a zero byte.
---

diff --git a/v8/src/compiler/machines/spectrum/rules1.scm b/v8/src/compiler/machines/spectrum/rules1.scm
index 90a28439a..89dd3a4c5 100644
--- a/v8/src/compiler/machines/spectrum/rules1.scm
+++ b/v8/src/compiler/machines/spectrum/rules1.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: rules1.scm,v 1.1 1994/11/19 02:08:04 adams Exp $
+$Id: rules1.scm,v 1.2 1995/03/08 13:38:51 adams Exp $
 
 Copyright (c) 1989-1994 Massachusetts Institute of Technology
 
@@ -480,8 +480,13 @@ MIT in each case. |#
 	  (CHAR->ASCII (REGISTER (? source))))
   (store-byte (standard-source! source) offset (standard-source! base)))
 
+;; store null byte in memory
+(define-rule statement
+  (ASSIGN (BYTE-OFFSET (REGISTER (? base)) (MACHINE-CONSTANT (? offset)))
+	  (CONSTANT 0))
+  (store-byte 0 offset (standard-source! base)))
+
 (define-rule statement
-  ;; store null byte in memory
   (ASSIGN (BYTE-OFFSET (REGISTER (? base)) (MACHINE-CONSTANT (? offset)))
 	  (CHAR->ASCII (CONSTANT #\NUL)))
   (store-byte 0 offset (standard-source! base)))