diff options
Diffstat (limited to 'riscv/csrs.cc')
-rw-r--r-- | riscv/csrs.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/riscv/csrs.cc b/riscv/csrs.cc index dac3eef..7a52353 100644 --- a/riscv/csrs.cc +++ b/riscv/csrs.cc @@ -455,6 +455,10 @@ sstatus_proxy_csr_t::sstatus_proxy_csr_t(processor_t* const proc, const reg_t ad bool sstatus_proxy_csr_t::unlogged_write(const reg_t val) noexcept { const reg_t new_mstatus = (mstatus->read() & ~sstatus_write_mask) | (val & sstatus_write_mask); + // On RV32 this will only log the low 32 bits, so make sure we're + // not modifying anything in the upper 32 bits. + assert((sstatus_write_mask & 0xffffffffU) == sstatus_write_mask); + mstatus->write(new_mstatus); return false; // avoid double logging: already logged by mstatus->write() } |