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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-09-03 09:43:26 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-09-09 17:35:28 +1000 |
| commit | e53b43d8d41f6c9bab8b4db73e64bc23c8063795 (patch) | |
| tree | 104c8eab942931110f80369e0e73738fe8fe6a99 | |
| parent | 1dede02bdd64116b98bdcbc2e2be20e62afd43f5 (diff) | |
| download | linux-e53b43d8d41f6c9bab8b4db73e64bc23c8063795.tar.bz2 | |
crypto: arm/aes-ce - 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-ce-core.S | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/arm/crypto/aes-ce-core.S b/arch/arm/crypto/aes-ce-core.S index a3ca4ac2d7bb..bb6ec1844370 100644 --- a/arch/arm/crypto/aes-ce-core.S +++ b/arch/arm/crypto/aes-ce-core.S @@ -382,13 +382,10 @@ ENDPROC(ce_aes_ctr_encrypt) veor \out, \out, \tmp .endm - .align 3 -.Lxts_mul_x: - .quad 1, 0x87 - ce_aes_xts_init: - vldr d30, .Lxts_mul_x - vldr d31, .Lxts_mul_x + 8 + vmov.i32 d30, #0x87 @ compose tweak mask vector + vmovl.u32 q15, d30 + vshr.u64 d30, d31, #7 ldrd r4, r5, [sp, #16] @ load args ldr r6, [sp, #28] |