| Message ID | 20190903164339.27984-5-ard.biesheuvel@linaro.org |
|---|---|
| State | Accepted |
| Commit | e53b43d8d41f6c9bab8b4db73e64bc23c8063795 |
| Headers | show
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| 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