li TESTNUM, 2
+ # This is the expected trap code.
+ li t1, CAUSE_USER_ECALL
+
+#ifdef __MACHINE_MODE
+ # If running in M mode, use mstatus.MPP to check existence of U mode.
+ # Otherwise, if in S mode, then U mode must exist and we don't need to check.
+ li t0, MSTATUS_MPP
+ csrc mstatus, t0
+ csrr t2, mstatus
+ and t0, t0, t2
+ beqz t0, 1f
+
+ # If U mode doesn't exist, mcause should indicate ECALL from M mode.
+ li t1, CAUSE_MACHINE_ECALL
+#endif
+
+1:
li t0, SSTATUS_SPP
csrc sstatus, t0
la t0, 1f
1:
li TESTNUM, 1
+do_scall:
scall
j fail
TEST_PASSFAIL
+ .align 2
+ .global stvec_handler
stvec_handler:
- li t1, CAUSE_USER_ECALL
csrr t0, scause
bne t0, t1, fail
+ la t2, do_scall
+ csrr t0, sepc
+ bne t0, t2, fail
j pass
RVTEST_CODE_END