{
    global:
        occlum_pal_get_version;
        occlum_pal_init;
        occlum_pal_create_process;
        occlum_pal_exec;
        occlum_pal_kill;
        occlum_pal_destroy;
        pal_get_version;
        pal_init;
        pal_create_process;
        pal_exec;
        pal_kill;
        pal_destroy;
    local:
        *;
};