Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

This new implementation inspires the design of https://github.com/jsakkine-intel/linux-sgx/tree/next/tools/testing/selftests/x86/sgx, which is a real enclave runtime.
Signed-off-by: Njack.wxz <wangxiaozhe@linux.alibaba.com>