target/s390x: check alignment in CDSG in the !CONFIG_ATOMIC128 case
The CDSG instruction requires a 16-byte alignement, as expressed in the MO_ALIGN_16 passed to helper_atomic_cmpxchgo_be_mmu. In the non parallel case, use check_alignment to enforce this. Signed-off-by: NAurelien Jarno <aurelien@aurel32.net> Message-Id: <20170604202034.16615-4-aurelien@aurel32.net> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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