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target/xtensa: tests: add ccount write tests 

Check that CCOUNT SR is writable and that CCOMPARE timers are updated
when CCOUNT is written to.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2017-01-15 08:42:31 -08:00
parent 4f89b41c28
commit 0a362d0768
1 changed files with 34 additions and 0 deletions
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34
tests/tcg/xtensa/test_timer.S
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@ -19,6 +19,40 @@ test ccount
assert ne, a3, a4
test_end
test ccount_write
rsr a3, ccount
rsr a4, ccount
sub a4, a4, a3
movi a2, 0x12345678
wsr a2, ccount
esync
rsr a3, ccount
sub a3, a3, a2
slli a4, a4, 2
assert ltu, a3, a4
test_end
test ccount_update_deadline
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
movi a2, 0x12345678
wsr a2, ccompare0
rsr a3, interrupt
assert eqi, a3, 0
movi a2, 0x12345677
wsr a2, ccount
esync
nop
rsr a2, interrupt
movi a3, 1 << XCHAL_TIMER0_INTERRUPT
assert eq, a2, a3
test_end
test ccompare
movi a2, 0
wsr a2, intenable