@@ -561,6 +561,7 @@
#define MSTATUS_SDT 0x01000000
#define MSTATUS_GVA 0x4000000000ULL
#define MSTATUS_MPV 0x8000000000ULL
+#define MSTATUS_MDT 0x40000000000ULL /* Smdbltrp extension */
#define MSTATUS64_UXL 0x0000000300000000ULL
#define MSTATUS64_SXL 0x0000000C00000000ULL
@@ -1617,6 +1617,14 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno,
}
}
+ if (riscv_cpu_cfg(env)->ext_smdbltrp) {
+ mask |= MSTATUS_MDT;
+ if ((val & MSTATUS_MDT) != 0) {
+ mstatus &= ~MSTATUS_MIE;
+ val &= ~MSTATUS_MIE;
+ }
+ }
+
if (xl != MXL_RV32 || env->debugger) {
if (riscv_has_ext(env, RVH)) {
mask |= MSTATUS_MPV | MSTATUS_GVA;
@@ -1655,6 +1663,13 @@ static RISCVException write_mstatush(CPURISCVState *env, int csrno,
uint64_t valh = (uint64_t)val << 32;
uint64_t mask = riscv_has_ext(env, RVH) ? MSTATUS_MPV | MSTATUS_GVA : 0;
+ if (riscv_cpu_cfg(env)->ext_smdbltrp) {
+ mask |= MSTATUS_MDT;
+ if ((val & MSTATUS_MDT) != 0) {
+ env->mstatus &= ~MSTATUS_MIE;
+ val &= ~MSTATUS_MIE;
+ }
+ }
env->mstatus = (env->mstatus & ~mask) | (valh & mask);
return RISCV_EXCP_NONE;
Implement MSTATUS.MDT behavior. Signed-off-by: Clément Léger <cleger@rivosinc.com> --- target/riscv/cpu_bits.h | 1 + target/riscv/csr.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+)