fi
fi
+cmpxchg128=no
+if test "$int128" = yes -a "$atomic128" = no; then
+ cat > $TMPC << EOF
+int main(void)
+{
+ unsigned __int128 x = 0, y = 0;
+ __sync_val_compare_and_swap_16(&x, y, x);
+ return 0;
+}
+EOF
+ if compile_prog "" "" ; then
+ cmpxchg128=yes
+ fi
+fi
+
#########################################
# See if 64-bit atomic operations are supported.
# Note that without __atomic builtins, we can only
echo "CONFIG_ATOMIC128=y" >> $config_host_mak
fi
+if test "$cmpxchg128" = "yes" ; then
+ echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
+fi
+
if test "$atomic64" = "yes" ; then
echo "CONFIG_ATOMIC64=y" >> $config_host_mak
fi