Max Filippov da0a4e5c8f xtensa: only build windowed register support code when needed ...

There's no need in window overflow/underflow/alloca exception handlers
or window spill code when neither kernel nor userspace support windowed
registers. Don't build or link it.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

2021-10-18 22:19:35 -07:00

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