diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-09-03 09:43:27 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-09-09 17:35:28 +1000 |
| commit | 38e73b3d38c49afb0be460f8b9dbd7eb559b4dd8 (patch) | |
| tree | 601b6163ab4b35abf4af140f0734050dc8e227fc | |
| parent | e53b43d8d41f6c9bab8b4db73e64bc23c8063795 (diff) | |
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 <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | arch/arm/crypto/aes-neonbs-core.S | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/arm/crypto/aes-neonbs-core.S b/arch/arm/crypto/aes-neonbs-core.S index d3eab76b6e1b..bb75918e4984 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 |