qemu/tests/xtensa/test_timer.S
Max Filippov 890c6333b2 target-xtensa: fix guest hang on masked CCOMPARE interrupt
QEMU timer is used to post CCOMPARE interrupt when the core is halted.
If that CCOMPARE interrupt is masked off then the timer must be rearmed
in the callback, otherwise it will be rearmed next time the core goes to
halt by the waiti instruction.

Add test case into timer testsuite.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-10-15 21:03:03 +00:00

179 lines
3.2 KiB
ArmAsm

.include "macros.inc"
test_suite timer
test ccount
rsr a3, ccount
rsr a4, ccount
sub a3, a4, a3
assert eqi, a3, 1
test_end
test ccompare
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
movi a3, 20
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare0
rsr a2, interrupt
assert eqi, a2, 0
loop a3, 1f
rsr a3, interrupt
bnez a3, 2f
1:
test_fail
2:
test_end
test ccompare0_interrupt
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
movi a3, 20
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 0x40
wsr a2, intenable
rsil a2, 0
loop a3, 1f
nop
1:
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test ccompare1_interrupt
set_vector level3, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare0
wsr a2, ccompare2
movi a3, 20
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare1
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 0x400
wsr a2, intenable
rsil a2, 2
loop a3, 1f
nop
1:
test_fail
2:
test_end
test ccompare2_interrupt
set_vector level5, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare0
wsr a2, ccompare1
movi a3, 20
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare2
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 0x2000
wsr a2, intenable
rsil a2, 4
loop a3, 1f
nop
1:
test_fail
2:
test_end
test ccompare_interrupt_masked
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare2
movi a3, 40
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare1
addi a2, a2, 20
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 0x40
wsr a2, intenable
rsil a2, 0
loop a3, 1f
nop
1:
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test ccompare_interrupt_masked_waiti
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare2
movi a3, 40
rsr a2, ccount
addi a2, a2, 20
wsr a2, ccompare1
addi a2, a2, 20
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 0x40
wsr a2, intenable
waiti 0
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test_suite_end