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target/xtensa: extract test for window overflow exception
- add ps.callinc to the TB flags, that allows testing all instructions for window overflow statically; - drop gen_window_check* functions; replace them with get_window_check that accepts bitmask of used registers; - add XtensaOpcodeOps::test_overflow that returns bitmask of implicitly used registers; use it for entry and call{,x}{4,8,12}; - drop window overflow test from the entry helper; - drop parameter 0 from translate_[di]cache and use translate_nop for d/i cache opcodes that don't need memory accessibility check; - add bitmask XtensaOpcodeOps::windowed_register_op that marks opcode arguments that refer to windowed registers; - translate windowed_register_op mask to a mask of actually used registers in the disassembly loop; - add check for window overflow right after the check for debug exception; Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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