[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/tools/build/feature/test-sync-compare-and-swap.c b/src/kernel/linux/v4.14/tools/build/feature/test-sync-compare-and-swap.c
new file mode 100644
index 0000000..1e38d19
--- /dev/null
+++ b/src/kernel/linux/v4.14/tools/build/feature/test-sync-compare-and-swap.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdint.h>
+
+volatile uint64_t x;
+
+int main(int argc, char *argv[])
+{
+ uint64_t old, new = argc;
+
+ argv = argv;
+ do {
+ old = __sync_val_compare_and_swap(&x, 0, 0);
+ } while (!__sync_bool_compare_and_swap(&x, old, new));
+ return old == new;
+}