Richard Henderson
e6cd4bb59b
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 >
2018-10-18 19:46:36 -07:00
..
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