From: Andy Polyakov <appro@openssl.org>
Date: Fri, 11 Nov 2005 20:07:07 +0000 (+0000)
Subject: Attempt to resolve sporadic SEGV crashes in bn_sub_words in OpenSSH. I'm
X-Git-Tag: OpenSSL_0_9_8k^2~1698
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c52c82ffc1e5427fe16c6ec87fc48f5f0ba61575;p=oweals%2Fopenssl.git

Attempt to resolve sporadic SEGV crashes in bn_sub_words in OpenSSH. I'm
baffled why it crashes and does it sporadically...
---

diff --git a/crypto/bn/asm/sparcv8plus.S b/crypto/bn/asm/sparcv8plus.S
index 0074dfdb75..8992928ca8 100644
--- a/crypto/bn/asm/sparcv8plus.S
+++ b/crypto/bn/asm/sparcv8plus.S
@@ -445,6 +445,7 @@ bn_div_words:
  * int n;
  */
 bn_add_words:
+	sra	%o3,%g0,%o3	! signx %o3
 	brgz,a	%o3,.L_bn_add_words_proceed
 	lduw	[%o1],%o4
 	retl
@@ -454,7 +455,6 @@ bn_add_words:
 	andcc	%o3,-4,%g0
 	bz,pn	%icc,.L_bn_add_words_tail
 	addcc	%g0,0,%g0	! clear carry flag
-	nop
 
 .L_bn_add_words_loop:		! wow! 32 aligned!
 	dec	4,%o3
@@ -523,6 +523,7 @@ bn_add_words:
  * int n;
  */
 bn_sub_words:
+	sra	%o3,%g0,%o3	! signx %o3
 	brgz,a	%o3,.L_bn_sub_words_proceed
 	lduw	[%o1],%o4
 	retl
@@ -532,7 +533,6 @@ bn_sub_words:
 	andcc	%o3,-4,%g0
 	bz,pn	%icc,.L_bn_sub_words_tail
 	addcc	%g0,0,%g0	! clear carry flag
-	nop
 
 .L_bn_sub_words_loop:		! wow! 32 aligned!
 	dec	4,%o3