diff options
| -rw-r--r-- | sys/arch/riscv64/riscv64/trap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/arch/riscv64/riscv64/trap.c b/sys/arch/riscv64/riscv64/trap.c index fd84ee9a6ae..7e1286ee013 100644 --- a/sys/arch/riscv64/riscv64/trap.c +++ b/sys/arch/riscv64/riscv64/trap.c @@ -67,6 +67,9 @@ do_trap_supervisor(struct trapframe *frame) KASSERTMSG((csr_read(sstatus) & (SSTATUS_SPP | SSTATUS_SIE)) == SSTATUS_SPP, "Came from S mode with interrupts enabled"); + KASSERTMSG((csr_read(sstatus) & (SSTATUS_SUM)) == 0, + "Came from S mode with SUM enabled"); + if (frame->tf_scause & EXCP_INTR) { /* Interrupt */ riscv_cpu_intr(frame); @@ -119,6 +122,9 @@ do_trap_user(struct trapframe *frame) KASSERTMSG((csr_read(sstatus) & (SSTATUS_SPP | SSTATUS_SIE)) == 0, "Came from U mode with interrupts enabled"); + KASSERTMSG((csr_read(sstatus) & (SSTATUS_SUM)) == 0, + "Came from U mode with SUM enabled"); + /* Save fpu context before (possibly) calling interrupt handler. * Could end up context switching in interrupt handler. */ |