Integrated: 8252204: AArch64: Implement SHA3 accelerator/intrinsic

[Fei Yang]

On Wed, 16 Sep 2020 16:36:54 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Contributed-by: ard.biesheuvel at linaro.org, dongbo4 at huawei.com
> 
> This added an intrinsic for SHA3 using aarch64 v8.2 SHA3 Crypto Extensions.
> Reference implementation for core SHA-3 transform using ARMv8.2 Crypto Extensions:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/arm64/crypto/sha3-ce-core.S?h=v5.4.52
> 
> Trivial adaptation in SHA3. implCompress is needed for the purpose of adding the intrinsic.
> For SHA3, we need to pass one extra parameter "digestLength" to the stub for the calculation of block size.
> "digestLength" is also used in for the EOR loop before keccak to differentiate different SHA3 variants.
> 
> We added jtreg tests for SHA3 and used QEMU system emulator which supports SHA3 instructions to test the functionality.
> Patch passed jtreg tier1-3 tests with QEMU system emulator.
> Also verified with jtreg tier1-3 tests without SHA3 instructions on aarch64-linux-gnu and x86_64-linux-gnu, to make sure that there's no regression.
> 
> We used one existing JMH test for performance test: test/micro/org/openjdk/bench/java/security/MessageDigests.java
> We measured the performance benefit with an aarch64 cycle-accurate simulator.
> Patch delivers 20% - 40% performance improvement depending on specific SHA3 digest length and size of the message.
> 
> For now, this feature will not be enabled automatically for aarch64. We can auto-enable this when it is fully tested on real hardware.  But for the above testing purposes, this is auto-enabled when the corresponding hardware feature is detected.

This pull request has now been integrated.

Changeset: b25d8940
Author:    Fei Yang <fyang at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/b25d8940
Stats:     1265 lines in 36 files changed: 1010 ins; 22 del; 233 mod

8252204: AArch64: Implement SHA3 accelerator/intrinsic

Co-authored-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
Co-authored-by: Dong Bo <dongbo4 at huawei.com>
Reviewed-by: aph, kvn

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PR: https://git.openjdk.java.net/jdk/pull/207