From 7a3b1c6ee761b7b2e49e01f0f2922c3ace3aa5b3 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Tue, 3 Sep 2019 09:43:28 -0700 Subject: [PATCH] crypto: arm64/aes-neonbs - replace tweak mask literal with composition Replace the vector load from memory sequence with a simple instruction sequence to compose the tweak vector directly. Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu --- arch/arm64/crypto/aes-neonbs-core.S | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/arm64/crypto/aes-neonbs-core.S b/arch/arm64/crypto/aes-neonbs-core.S index cf10ff8878a3..65982039fa36 100644 --- a/arch/arm64/crypto/aes-neonbs-core.S +++ b/arch/arm64/crypto/aes-neonbs-core.S @@ -730,11 +730,6 @@ ENDPROC(aesbs_cbc_decrypt) eor \out\().16b, \out\().16b, \tmp\().16b .endm - .align 4 -.Lxts_mul_x: -CPU_LE( .quad 1, 0x87 ) -CPU_BE( .quad 0x87, 1 ) - /* * aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks, u8 iv[]) @@ -806,7 +801,9 @@ ENDPROC(__xts_crypt8) mov x23, x4 mov x24, x5 -0: ldr q30, .Lxts_mul_x +0: movi v30.2s, #0x1 + movi v25.2s, #0x87 + uzp1 v30.4s, v30.4s, v25.4s ld1 {v25.16b}, [x24] 99: adr x7, \do8 -- 2.30.2