tree ba27b4a563f09be9d965cefe265d170f8974ae37
parent 5cb491addf4b28fa82fb5b3eaacaae38d7c0bdad
author Tor Jeremiassen <torerik@google.com> 1734044217 -0800
committer Tor Jeremiassen <torerik@google.com> 1734044577 -0800

Adds a new CSR type RiscVShadowCsr that allows a CSR to provide a more
restrictive view of another CSR.

Adds cycle/cycleh and instret/instreth as shadow CSRs

PiperOrigin-RevId: 705640436
Change-Id: I91f0c2396abc54e154cba387243ab0f8a136f70b