Add Zilsd/Zclsd Support

[trdthg]

spec: https://github.com/riscv/riscv-zilsd/blob/main/zilsd.adoc#insns-sd

• zilsd:
  • RV32 only
  • load/store 64 bit value
  • has same assembly with 2.6. Load and Store Instructions
• zclsd:
  • RV32 only
  • load/store 64 bit value
  • has same assembly with 26.3. Load and Store Instructions
  • compressed
  • base = rs1 or stack_pointer
  • has overlapping encodings with Zcf

function clause extensionEnabled(Ext_Zclsd) = true & xxx is a placeholder, waiting for config system

[github-actions[bot]]

Test Results

398 tests  ±0   398 ✅ ±0   1m 45s ⏱️ ±0s   1 suites ±0     0 💤 ±0    1 files   ±0     0 ❌ ±0 

Results for commit 179b3be3. ± Comparison against base commit 513a7055.

:recycle: This comment has been updated with latest results.

[christian-herber-nxp]

how does this relate to https://github.com/riscv/sail-riscv/pull/490?

[trdthg]

how does this relate to #490?

I didn't see it before. Currently, the code mainly has the following differences

• zcmlsd -> zclsd
• directly concat the 0 at the end of the imm to the ast
• ast naming inconsistency (adopted theirs, I haven't added co-authored-by yet because I don't know his email)
• simply execute
• TODO some refactor based on the new features of sail
  • [x] #768
  • [x] #758

[pmundkur]

@trdthg Could you check with @christian-herber-nxp to make sure we're not missing anything from #490 and we get the appropriate co-authors?

[christian-herber-nxp]

the author of the original PR should be clear from that, it is @simonacostinescu

[trdthg]

Update

I am trying to run act tests (there is already a PR, not merged yet), but encountered a few problems

• riscv-config https://github.com/riscv-software-src/riscv-config/pull/189 waiting for merge
• [x] ~the tests have some issue(seems about ISA constrains), I'm doing some fix~ done
• [x] gcc zilsd/zclsd support not merged yet(and it's not complete, some orgs have complete version, but lack maintenance, need rebase), trying with clang / compile gcc locally

I think you could review this after I finished those tests.

Co-authored-by already added