EXTCODE_COMPARE_SWAP
ext_tcode == EXTCODE_COMPARE_SWAP && length == 8) {
KUNIT_EXPECT_EQ(test, EXTCODE_COMPARE_SWAP, extended_tcode);
KUNIT_EXPECT_EQ(test, EXTCODE_COMPARE_SWAP, extended_tcode);
#define TCODE_LOCK_COMPARE_SWAP (0x10 | EXTCODE_COMPARE_SWAP)