perf: refine csr accessibility checking

1. support zicntr and zihpm performance extensions
   zicntr defines the unprivileged cycle/time/instret
   zihpm defines the unprivileged hpmcounter3-31

2. the accessibility are controlled only by
   mcounteren/scounteren/hcounteren for access in different privilege
   modes

Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/riscv/processor.h b/riscv/processor.h
index f58ec4b..9ee3e6c 100644
--- a/riscv/processor.h
+++ b/riscv/processor.h
@@ -280,6 +280,8 @@ typedef enum {
   EXT_ZHINXMIN,
   EXT_ZICBOM,
   EXT_ZICBOZ,
+  EXT_ZICNTR,
+  EXT_ZIHPM,
   EXT_XZBP,
   EXT_XZBS,
   EXT_XZBE,