[immibis]

You can write your own dynamic loader, or port the one from libc, or attempt to statically link it (against its wishes). Nothing stops you opening a .so file and mmapping the appropriate sections - that's what the dynamic loader does, and it's just normal user-space code, after all. However, the libc dynamic loader definitely prefers to be your program's entry point. You're swimming against the current by doing it any other way.