From 72c0482d9f29dcd7771a82ddcde15048a4702e8c Mon Sep 17 00:00:00 2001 From: Andy Polyakov Date: Sat, 25 Mar 2017 10:58:57 +0100 Subject: [PATCH] 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: Rich Salz (cherry picked from commit 0822d41b6d54132df96c02cc6f6fa9b179378351) --- crypto/aes/asm/bsaes-armv7.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/aes/asm/bsaes-armv7.pl b/crypto/aes/asm/bsaes-armv7.pl index 83343e2de1..70b3f9656f 100644 --- a/crypto/aes/asm/bsaes-armv7.pl +++ b/crypto/aes/asm/bsaes-armv7.pl @@ -1333,7 +1333,7 @@ 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 -- 2.25.1