The sstatus register is a read/write register formatted as shown in
the following figure for RV32 and RV64. The sstatus register is a subset of the
mstatus register. The register only exists when supervisor mode is enabled (C_USE_MMU > 2).
Figure 1. Supervisor Status Register Formatted for RV32
Figure 2. Supervisor Status Register Formatted for RV64
Detailed bit field information is listed in the description of the Machine Status register.