Commit c52c82ff authored by Andy Polyakov's avatar Andy Polyakov
Browse files

Attempt to resolve sporadic SEGV crashes in bn_sub_words in OpenSSH. I'm 

baffled why it crashes and does it sporadically...
parent d6a03a23

crypto/bn/asm/sparcv8plus.S

+2 −2
Original line number Original line Diff line number Diff line
@@ -445,6 +445,7 @@ bn_div_words: 
 * int n;

 * int n;

 */

 */

bn_add_words:

bn_add_words:

	sra	%o3,%g0,%o3	! signx %o3

	brgz,a	%o3,.L_bn_add_words_proceed

	brgz,a	%o3,.L_bn_add_words_proceed

	lduw	[%o1],%o4

	lduw	[%o1],%o4

	retl

	retl
@@ -454,7 +455,6 @@ bn_add_words: 
	andcc	%o3,-4,%g0

	andcc	%o3,-4,%g0

	bz,pn	%icc,.L_bn_add_words_tail

	bz,pn	%icc,.L_bn_add_words_tail

	addcc	%g0,0,%g0	! clear carry flag

	addcc	%g0,0,%g0	! clear carry flag

	nop





.L_bn_add_words_loop:		! wow! 32 aligned!

.L_bn_add_words_loop:		! wow! 32 aligned!

	dec	4,%o3

	dec	4,%o3
@@ -523,6 +523,7 @@ bn_add_words: 
 * int n;

 * int n;

 */

 */

bn_sub_words:

bn_sub_words:

	sra	%o3,%g0,%o3	! signx %o3

	brgz,a	%o3,.L_bn_sub_words_proceed

	brgz,a	%o3,.L_bn_sub_words_proceed

	lduw	[%o1],%o4

	lduw	[%o1],%o4

	retl

	retl
@@ -532,7 +533,6 @@ bn_sub_words: 
	andcc	%o3,-4,%g0

	andcc	%o3,-4,%g0

	bz,pn	%icc,.L_bn_sub_words_tail

	bz,pn	%icc,.L_bn_sub_words_tail

	addcc	%g0,0,%g0	! clear carry flag

	addcc	%g0,0,%g0	! clear carry flag

	nop





.L_bn_sub_words_loop:		! wow! 32 aligned!

.L_bn_sub_words_loop:		! wow! 32 aligned!

	dec	4,%o3

	dec	4,%o3