Check that entry instruction raises window overflow exception when
PS.CALLINC points to live registers.
Signed-off-by: Max Filippov <jcmvb...@gmail.com>
---
tests/tcg/xtensa/test_windowed.S | 51 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/tests/tcg/xtensa/test_windowed.S b/tests/tcg/xtensa/test_windowed.S
index 3de6d37..d851e8f 100644
--- a/tests/tcg/xtensa/test_windowed.S
+++ b/tests/tcg/xtensa/test_windowed.S
@@ -299,4 +299,55 @@ test entry
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
+
test_suite_end
--
1.8.1.4
