|
Implement the Zvksed sub-extension, "ShangMi Suite: SM4 Block Cipher":
- vsm4k.vi, vector SM4 key expansion,
- vsm4r.{vs,vv}, vector SM4 rounds.
This also introduces a header for common vector SM4 logic.
Co-authored-by: Raghav Gupta <rgupta@rivosinc.com>
Co-authored-by: Albert Jakieła <aja@semihalf.com>
Signed-off-by: Eric Gouriou <ego@rivosinc.com>
|
|
Brief:
- This commit adds spike support for the scalar cryptography extension.
See the riscv-crypto repository (https://github.com/riscv/riscv-crypto)
for more information on this extension.
- It is based on the experimental patch which has so far been kept in the
riscv-crypto repository. Now that scalar crypto is nearly at the "freeze"
stage and entering opcode consistency review, it makes sense to start
upstreaming our experimental version.
- In terms of compiler support - we are using an experimental patch in
the riscv-crypto repository at the moment, others are working on an
upstream appropriate version.
Details:
- Add support for dedicated scalar crypto instructions.
- Add very basic support for the entropy source (entropy_source.h).
Much of the behaviour of this is implementation specific. This model
aims to provide the bare minimum of functionality which can be used to
quickly develop software. It uses /dev/urandom as its entropy source for
now.
- Scalar crypto is unique in that it _borrows_ instructions from the
Bitmanipulation extension. This is currently _not_ encoded in the patch,
as I didn't want to damage anything in Bitmanip which is currently under
review. However, I've added a macro in riscv/decode.h called
"require_either_extension(A,B)", which allows instructions to be valid
opcodes iff they are in one or both extensions.
On branch scalar-crypto
Changes to be committed:
modified: README.md
modified: riscv/decode.h
modified: riscv/encoding.h
new file: riscv/entropy_source.h
new file: riscv/insns/aes64im.h
new file: riscv/insns/aes64ks1i.h
new file: riscv/insns/aes64ks2.h
new file: riscv/insns/aes_common.h
new file: riscv/insns/aesds.h
new file: riscv/insns/aesdsm.h
new file: riscv/insns/aeses.h
new file: riscv/insns/aesesm.h
new file: riscv/insns/sha256sig0.h
new file: riscv/insns/sha256sig1.h
new file: riscv/insns/sha256sum0.h
new file: riscv/insns/sha256sum1.h
new file: riscv/insns/sha512sig0.h
new file: riscv/insns/sha512sig0h.h
new file: riscv/insns/sha512sig0l.h
new file: riscv/insns/sha512sig1.h
new file: riscv/insns/sha512sig1h.h
new file: riscv/insns/sha512sig1l.h
new file: riscv/insns/sha512sum0.h
new file: riscv/insns/sha512sum0r.h
new file: riscv/insns/sha512sum1.h
new file: riscv/insns/sha512sum1r.h
new file: riscv/insns/sm3p0.h
new file: riscv/insns/sm3p1.h
new file: riscv/insns/sm4_common.h
new file: riscv/insns/sm4ed.h
new file: riscv/insns/sm4ks.h
modified: riscv/processor.cc
modified: riscv/processor.h
modified: riscv/riscv.mk.in
|
