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#include "macros.inc"
test_suite windowed
#if XCHAL_HAVE_WINDOWED
.altmacro
.macro reset_window start
movi a2, 0xffff
wsr a2, windowstart
rsync
movi a2, 0
wsr a2, windowbase
rsync
movi a2, \start
wsr a2, windowstart
rsync
.endm
.macro overflow_test shift, window, probe_ok, probe_ex
set_vector window_overflow_4, 0
set_vector window_overflow_8, 0
set_vector window_overflow_12, 0
movi a2, 1 | (((1 << ((\window) / 4)) | 1) << ((\shift) / 4))
wsr a2, windowstart
reset_ps
mov a2, a\probe_ok
set_vector window_overflow_\window, 10f
1:
mov a2, a\probe_ex
test_fail
10:
rsr a2, epc1
movi a3, 1b
assert eq, a2, a3
movi a2, 2f
wsr a2, epc1
rsr a2, windowbase
movi a3, (\shift) / 4
assert eq, a2, a3
rsr a2, ps
movi a3, 0x4001f
assert eq, a2, a3
rfwo
test_fail
2:
rsr a2, windowbase
assert eqi, a2, 0
rsr a2, windowstart
movi a3, 1 | ((1 << ((\window) / 4)) << ((\shift) / 4))
assert eq, a2, a3
rsr a2, ps
movi a3, 0x4000f
assert eq, a2, a3
.endm
.macro overflow_tests shift, window, probe
.if \probe < 15
overflow_test \shift, \window, %((\shift) - 1), \probe
overflow_tests \shift, \window, %((\probe) + 1)
.endif
.endm
.macro all_overflow_tests
.irp shift, 4, 8, 12
.irp window, 4, 8, 12
overflow_tests \shift, \window, \shift
.endr
.endr
.endm
test overflow
all_overflow_tests
test_end
.macro underflow_test window
set_vector window_underflow_4, 0
set_vector window_underflow_8, 0
set_vector window_underflow_12, 0
set_vector window_underflow_\window, 10f
reset_window 1
reset_ps
ssai 2
movi a2, 2f
slli a2, a2, 2
movi a3, (\window) / 4
src a0, a3, a2
1:
retw
test_fail
10:
rsr a2, epc1
movi a3, 1b
assert eq, a2, a3
movi a2, 2f
wsr a2, epc1
rsr a2, ps
movi a3, 0x4001f
assert eq, a2, a3
rsr a2, windowbase
movi a3, (XCHAL_NUM_AREGS - (\window)) / 4
assert eq, a2, a3
rsr a2, windowstart
assert eqi, a2, 1
rfwu
2:
rsr a2, ps
movi a3, 0x4000f
assert eq, a2, a3
rsr a2, windowbase
assert eqi, a2, 0
rsr a2, windowstart
assert bsi.l, a2, 0
assert bsi.l, a2, (XCHAL_NUM_AREGS - (\window)) / 4
.endm
test underflow
set_vector window_overflow_4, 0
set_vector window_overflow_8, 0
set_vector window_overflow_12, 0
underflow_test 4
underflow_test 8
underflow_test 12
test_end
.macro retw_test window
reset_window %(1 | (1 << ((XCHAL_NUM_AREGS - \window) / 4)))
reset_ps
ssai 2
movi a2, 1f
slli a2, a2, 2
movi a3, (\window) / 4
src a0, a3, a2
retw
test_fail
1:
rsr a2, ps
movi a3, 0x4000f
assert eq, a2, a3
rsr a2, windowbase
movi a3, (XCHAL_NUM_AREGS - (\window)) / 4
assert eq, a2, a3
rsr a2, windowstart
assert bci.l, a2, 0
assert bsi.l, a2, (XCHAL_NUM_AREGS - (\window)) / 4
.endm
test retw
set_vector window_underflow_4, 0
set_vector window_underflow_8, 0
set_vector window_underflow_12, 0
retw_test 4
retw_test 8
retw_test 12
test_end
test movsp
set_vector kernel, 2f
reset_window 1
reset_ps
1:
movsp a2, a3
test_fail
2:
rsr a2, exccause
assert eqi, a2, 5
rsr a2, epc1
movi a3, 1b
assert eq, a2, a3
set_vector kernel, 0
reset_window %(0x1 | (1 << ((XCHAL_NUM_AREGS / 4) - 1)))
reset_ps
movsp a2, a3
test_end
test rotw
reset_window 0x4b
reset_ps
movi a3, 0x10
rotw 1
rsr a2, windowbase
assert eqi, a2, 1
movi a3, 0x11
movi a7, 0x12
rotw 2
rsr a2, windowbase
assert eqi, a2, 3
movi a3, 0x13
movi a7, 0x14
movi a11, 0x15
rotw 3
rsr a2, windowbase
assert eqi, a2, 6
movi a3, 0x16
movi a7, 0x17
#if XCHAL_NUM_AREGS == 32
movi a2, 0x44
wsr a2, windowstart
#elif XCHAL_NUM_AREGS == 64
movi a2, 0x4004
wsr a2, windowstart
rotw -8
#else
#error XCHAL_NUM_AREGS unsupported
#endif
rsync
movi a2, 0x10
assert eq, a2, a11
movi a11, 0x18
movi a2, 0x11
assert eq, a2, a15
movi a15, 0x19
rotw 4
movi a2, 0x12
assert eq, a2, a3
movi a2, 0x13
assert eq, a2, a7
movi a2, 0x14
assert eq, a2, a11
movi a2, 0x15
assert eq, a2, a15
movi a2, 0x5
wsr a2, windowstart
rsync
rotw -2
movi a2, 0x18
assert eq, a2, a3
movi a2, 0x19
assert eq, a2, a7
test_end
.macro callw_test window
call\window 2f
1:
test_fail
.align 4
2:
rsr a2, windowbase
assert eqi, a2, 0
rsr a2, ps
movi a3, 0x4000f | ((\window) << 14)
assert eq, a2, a3
movi a2, 1b
slli a2, a2, 2
ssai 2
movi a3, (\window) / 4
src a2, a3, a2
assert eq, a2, a\window
.endm
test callw
reset_window 0x1
reset_ps
callw_test 4
callw_test 8
callw_test 12
test_end
.macro entry_test window
reset_window 0x1
reset_ps
movi a2, 0x4000f | ((\window) << 14)
wsr a2, ps
isync
movi a3, 0x12345678
j 1f
.align 4
1:
entry a3, 0x5678
movi a2, 0x12340000
assert eq, a2, a3
rsr a2, windowbase
assert eqi, a2, (\window) / 4
rsr a2, windowstart
movi a3, 1 | (1 << ((\window) / 4))
assert eq, a2, a3
rotw -(\window) / 4
.endm
test entry
entry_test 4
entry_test 8
entry_test 12
test_end
.macro entry_overflow_test window, free, next_window
set_vector window_overflow_4, 0
set_vector window_overflow_8, 0
set_vector window_overflow_12, 0
set_vector window_overflow_\next_window, 10f
movi a2, \window
movi a2, \free
movi a2, \next_window
reset_window %(1 | ((1 | (1 << ((\next_window) / 4))) << ((\free) / 4)))
reset_ps
movi a2, 0x4000f | ((\window) << 14)
wsr a2, ps
isync
movi a3, 0x12345678
j 1f
.align 4
1:
entry a3, 0x5678
test_fail
.align 4
10:
rsr a2, epc1
movi a3, 1b
assert eq, a2, a3
movi a2, 2f
wsr a2, epc1
rsr a2, windowbase
movi a3, (\free) / 4
assert eq, a2, a3
rfwo
2:
.endm
.macro all_entry_overflow_tests
.irp window, 4, 8, 12
.irp next_window, 4, 8, 12
.irp free, 4, 8, 12
.if \free <= \window
entry_overflow_test \window, \free, \next_window
.endif
.endr
.endr
.endr
.endm
test entry_overflow
all_entry_overflow_tests
test_end
#endif
test_suite_end
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