commit | e6cd4bb59b8154fa00da611200beef7eb4e8ec56 | [log] [tgz] |
---|---|---|
author | Richard Henderson <richard.henderson@linaro.org> | Wed Aug 15 16:31:47 2018 -0700 |
committer | Richard Henderson <richard.henderson@linaro.org> | Thu Oct 18 19:46:36 2018 -0700 |
tree | 092a1f3d8da6fe618602199eb7af7a6f65aa1950 | |
parent | 383beda9cf32f795616c3b93f7d6154d70372d4b [diff] |
tcg: Split CONFIG_ATOMIC128 GCC7+ will no longer advertise support for 16-byte __atomic operations if only cmpxchg is supported, as for x86_64. Fortunately, x86_64 still has support for __sync_compare_and_swap_16 and we can make use of that. AArch64 does not have, nor ever has had such support, so open-code it. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>