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Privilege test improvements

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This commit is contained in:
David Harris 2023-03-31 08:32:02 -07:00
parent da53f240d3
commit ab82bb397c
1 changed files with 26 additions and 0 deletions
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26
tests/coverage/priv.S
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@ -36,4 +36,30 @@ main:
addi t0, zero, 0 addi t0, zero, 0
csrr t0, stimecmp csrr t0, stimecmp
# CSR coverage
csrw scause, zero
csrw stval, zero
csrw scounteren, zero
csrw satp, zero
# satp write with mstatus.TVM = 1
bseti t0, zero, 20
csrs mstatus, t0
csrw satp, zero
# STIMECMP from S mode
li t0, 1
ecall # enter S-mode
csrw stimecmp, zero
li t0, 3
ecall # return to M-mode
csrsi mcounteren, 2 # mcounteren_tm = 1
li t0, 1
ecall # supervisor mode again
csrw stimecmp, zero
li t0, 3
ecall # machine mode again
j done j done