| Message ID | 20190821143253.30209-5-ard.biesheuvel@linaro.org |
|---|---|
| State | Superseded |
| Headers | show
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[109.242.1.103]) by smtp.gmail.com with ESMTPSA id 16sm181427wmx.45.2019.08.21.07.33.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2019 07:33:05 -0700 (PDT) From: Ard Biesheuvel <ard.biesheuvel@linaro.org> To: linux-crypto@vger.kernel.org Cc: herbert@gondor.apana.org.au, ebiggers@kernel.org, Ard Biesheuvel <ard.biesheuvel@linaro.org> Subject: [PATCH 04/17] crypto: arm/aes-ce - replace tweak mask literal with composition Date: Wed, 21 Aug 2019 17:32:40 +0300 Message-Id: <20190821143253.30209-5-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190821143253.30209-1-ard.biesheuvel@linaro.org> References: <20190821143253.30209-1-ard.biesheuvel@linaro.org> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: <linux-crypto.vger.kernel.org> X-Mailing-List: linux-crypto@vger.kernel.org |
| Series |
crypto: arm/aes - XTS ciphertext stealing and other updates
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expand
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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]
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> --- arch/arm/crypto/aes-ce-core.S | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) -- 2.17.1