x86-mont.pl: fix bug in integer-only squaring path.

PR: 2648

x86-mont.pl: fix bug in integer-only squaring path.
PR: 2648
5711dd8e · Andy Polyakov · 990390ab · 5711dd8e
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Showing with 3 addition and 1 deletion

crypto/bn/asm/x86-mont.pl crypto/bn/asm/x86-mont.pl +3 -1

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--- a/crypto/bn/asm/x86-mont.pl
+++ b/crypto/bn/asm/x86-mont.pl
@@ -527,8 +527,10 @@ $sbit=$num;
 	&jle	(&label("sqradd"));

 	&mov	($carry,"edx");
-	&lea	("edx",&DWP(0,$sbit,"edx",2));
+	&add	("edx","edx");
 	&shr	($carry,31);
+	&add	("edx",$sbit);
+	&adc	($carry,0);
 &set_label("sqrlast");
 	&mov	($word,$_n0);
 	&mov	($inp,$_np);