tree 5d68af55ddf42c9025133a17c0a21e318a47aaae
parent d7f425fdea991f052241c6479acd9feae834063b
author Emilio G. Cota <cota@braap.org> 1539182930 -0400
committer Richard Henderson <richard.henderson@linaro.org> 1539914290 -0700

tcg: access cpu->icount_decr.u16.high with atomics

Consistently access u16.high with atomics to avoid
undefined behaviour in MTTCG.

Note that icount_decr.u16.low is only used in icount mode,
so regular accesses to it are OK.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20181010144853.13005-2-cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>