From d92dcc7dcd2adbe072bbecbdfa907c67d26c74e4 Mon Sep 17 00:00:00 2001
From: wlott <wlott>
Date: Tue, 8 Jun 1993 10:58:54 +0000
Subject: [PATCH] Added checking for division by zero.

---
 assembly/sparc/arith.lisp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/assembly/sparc/arith.lisp b/assembly/sparc/arith.lisp
index 205e4f439..aa156e203 100644
--- a/assembly/sparc/arith.lisp
+++ b/assembly/sparc/arith.lisp
@@ -7,7 +7,7 @@
 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
 ;;;
 (ext:file-comment
-  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/assembly/sparc/arith.lisp,v 1.11 1992/12/17 09:45:50 wlott Exp $")
+  "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/assembly/sparc/arith.lisp,v 1.12 1993/06/08 10:58:54 wlott Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -266,6 +266,11 @@
 			  (:res quo any-reg nl2-offset)
 			  (:res rem any-reg nl0-offset))
 
+  (let ((error (generate-error-code nil division-by-zero-error
+				    dividend divisor)))
+    (inst cmp divisor)
+    (inst b :eq error))
+
   (move rem dividend)
   (emit-divide-loop divisor rem quo t))
 
@@ -286,6 +291,11 @@
 			  (:temp quo-sign any-reg nl5-offset)
 			  (:temp rem-sign any-reg nargs-offset))
   
+  (let ((error (generate-error-code nil division-by-zero-error
+				    dividend divisor)))
+    (inst cmp divisor)
+    (inst b :eq error))
+
   (inst xor quo-sign dividend divisor)
   (inst move rem-sign dividend)
   (let ((label (gen-label)))
@@ -331,6 +341,11 @@
 			  (:temp quo-sign signed-reg nl5-offset)
 			  (:temp rem-sign signed-reg nargs-offset))
   
+  (let ((error (generate-error-code nil division-by-zero-error
+				    dividend divisor)))
+    (inst cmp divisor)
+    (inst b :eq error))
+
   (inst xor quo-sign dividend divisor)
   (inst move rem-sign dividend)
   (let ((label (gen-label)))
-- 
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