Commit be253164 authored by Andy Polyakov's avatar Andy Polyakov
Browse files

aes/asm/bsaes-armv7.pl: relax stack alignment requirement. 



Even though Apple refers to Procedure Call Standard for ARM Architecture
(AAPCS), they apparently adhere to custom version that doesn't follow
stack alignment constraints in the said standard. [Why or why? If it's
vendor lock-in thing, then it would be like worst spot ever.] And since
bsaes-armv7 relied on standard alignment, it became problematic to
execute the code on iOS.

Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
(cherry picked from commit 0822d41b)
parent 2ba62f06

crypto/aes/asm/bsaes-armv7.pl

+1 −1
Original line number Diff line number Diff line
@@ -1365,7 +1365,7 @@ bsaes_cbc_encrypt: 
	vmov	@XMM[4],@XMM[15]		@ just in case ensure that IV

	vmov	@XMM[5],@XMM[0]			@ and input are preserved

	bl	AES_decrypt

	vld1.8	{@XMM[0]}, [$fp,:64]		@ load result

	vld1.8	{@XMM[0]}, [$fp]		@ load result

	veor	@XMM[0], @XMM[0], @XMM[4]	@ ^= IV

	vmov	@XMM[15], @XMM[5]		@ @XMM[5] holds input

	vst1.8	{@XMM[0]}, [$rounds]		@ write output