From: Ard Biesheuvel Date: Tue, 3 Sep 2019 16:43:27 +0000 (-0700) Subject: crypto: arm/aes-neonbs - replace tweak mask literal with composition X-Git-Tag: v5.4-rc8~4^2~47 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=38e73b3d38c49afb0be460f8b9dbd7eb559b4dd8;p=platform%2Fkernel%2Flinux-rpi.git crypto: arm/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 --- diff --git a/arch/arm/crypto/aes-neonbs-core.S b/arch/arm/crypto/aes-neonbs-core.S index d3eab76..bb75918 100644 --- a/arch/arm/crypto/aes-neonbs-core.S +++ b/arch/arm/crypto/aes-neonbs-core.S @@ -887,10 +887,6 @@ ENDPROC(aesbs_ctr_encrypt) veor \out, \out, \tmp .endm - .align 4 -.Lxts_mul_x: - .quad 1, 0x87 - /* * aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, * int blocks, u8 iv[]) @@ -899,7 +895,9 @@ ENDPROC(aesbs_ctr_encrypt) */ __xts_prepare8: vld1.8 {q14}, [r7] // load iv - __ldr q15, .Lxts_mul_x // load tweak mask + vmov.i32 d30, #0x87 // compose tweak mask vector + vmovl.u32 q15, d30 + vshr.u64 d30, d31, #7 vmov q12, q14 __adr ip, 0f