target-xtensa: record available window in TB flags
Record last valid 4-register window pane number in TB flags so that a
window overflow exception throw point is known at the translation time.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
diff --git a/target-xtensa/helper.h b/target-xtensa/helper.h
index ed3af0b..5ea9c5b 100644
--- a/target-xtensa/helper.h
+++ b/target-xtensa/helper.h
@@ -9,7 +9,7 @@
DEF_HELPER_4(entry, void, env, i32, i32, i32)
DEF_HELPER_2(retw, i32, env, i32)
DEF_HELPER_2(rotw, void, env, i32)
-DEF_HELPER_3(window_check, void, env, i32, i32)
+DEF_HELPER_3(window_check, noreturn, env, i32, i32)
DEF_HELPER_1(restore_owb, void, env)
DEF_HELPER_2(movsp, void, env, i32)
DEF_HELPER_2(wsr_lbeg, void, env, i32)
