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This pull requests draft the changes associated with two fast track extensions for vector crypto.
During the specification process for vector crypto 1.0.0 a few items had to be discarded because they appeared too late in the process. This fast track extension tries to address some of them.
New features:
Zvbc32e
: Extendingvclmul*
instruction to supportSEW=32-bit
valueZvkgs
: Adding.vs
variants tovghsh
andvghmul
Open questions:
Zvbcb
be allowed whenELEN >= 32
without depending onZvbc
?Zvbcb
support SEW=16 ? (SEW=8 ?)How to name the two new extensionsRelated changes:
spike-isa-sim
modificationsZvkgs
Zvbc32e