Add verify_permissions() for mseccfg_csr_t

The mseccfg only exists when enabling the Smepmp extension. If not
enabling the Smepmp extension, CSR instructions to the mseccfg raise
illegal instruction faults, and the PMP behaviors as hardwiring mseccfg
0 (the reset value of mseccfg).

1 files changed, 1 insertions, 0 deletions

diff --git a/riscv/csrs.h b/riscv/csrs.h
index bde31da..6c7c47d 100644
--- a/riscv/csrs.h
+++ b/riscv/csrs.h
@@ -130,6 +130,7 @@ class pmpcfg_csr_t: public csr_t {
 class mseccfg_csr_t: public basic_csr_t {
  public:
   mseccfg_csr_t(processor_t* const proc, const reg_t addr);
+  virtual void verify_permissions(insn_t insn, bool write) const override;
   bool get_mml() const noexcept;
   bool get_mmwp() const noexcept;
   bool get_rlb() const noexcept;