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))) -- GitLab