lib/crypto: sparc/sha512: Migrate optimized SHA-512 code to library

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Instead of exposing the sparc-optimized SHA-512 code via sparc-specific
crypto_shash algorithms, instead just implement the sha512_blocks()
library function.  This is much simpler, it makes the SHA-512 (and
SHA-384) library functions be sparc-optimized, and it fixes the
longstanding issue where the sparc-optimized SHA-512 code was disabled
by default.  SHA-512 still remains available through crypto_shash, but
individual architectures no longer need to handle it.

To match sha512_blocks(), change the type of the nblocks parameter of
the assembly function from int to size_t.  The assembly function
actually already treated it as size_t.

Note: to see the diff from arch/sparc/crypto/sha512_glue.c to
lib/crypto/sparc/sha512.h, view this commit with 'git show -M10'.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630160320.2888-14-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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This commit is contained in:

Eric Biggers 2025-06-30 09:03:17 -07:00

parent b7b366087e

commit 02b35bab7e

8 changed files with 146 additions and 236 deletions

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1

lib/crypto/Kconfig

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1

lib/crypto/Makefile

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42

lib/crypto/sparc/sha512.h

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102

lib/crypto/sparc/sha512_asm.S

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