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Diffstat (limited to 'src/counters.tex')
| -rw-r--r-- | src/counters.tex | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/counters.tex b/src/counters.tex index 2139d34..3160a27 100644 --- a/src/counters.tex +++ b/src/counters.tex @@ -41,7 +41,7 @@ pieces using CSRRS instructions. In RV64I, the CSR instructions can manipulate 64-bit CSRs. In particular, the RDCYCLE, RDTIME, and RDINSTRET pseudoinstructions read the full 64 bits of the {\tt cycle}, {\tt time}, and {\tt instret} counters. Hence, the RDCYCLEH, RDTIMEH, -and RDINSTRETH instructions are not required in RV64I. +and RDINSTRETH instructions are RV32I-only. \begin{commentary} Some execution environments might prohibit access to counters to |