Fix csrrwi vcsr readback - #489
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Pull request overview
This PR fixes the csrrwi vcsr CSR readback path in the Ara dispatcher so that reading vcsr returns the full CSR value (VXRM+VXSAT fields) rather than only vxsat, aligning with RVV’s vcsr layout and expected CSR semantics.
Changes:
- Update
csrrwi vcsrreadback to return{vxrm, vxsat}instead of onlyvxsat. - Document the fix in
CHANGELOG.md.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| hardware/src/ara_dispatcher.sv | Fix csrrwi vcsr readback to include both vxrm and vxsat fields. |
| CHANGELOG.md | Add a “Fixed” entry describing the corrected csrrwi vcsr readback. |
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csrrwi vcsrreturned onlyvxsat. Return the full CSR.Verification: Verilator elaboration.