How to use this loader directly without rely on proot

[lrzlin]

I'm currently working on port proot for new architectures like riscv64 or loongarch64, but encountering few issue inside the loader, and debugging the loader in proot is hard to do, so I'm wondering if I could use this loader directly so I could use gdb to debug it. Thanks!

loongarch64 port pr (currently not working with -O2 optimize due to loader issues): loongarch: add loongarch64 support for proot

riscv64 port (same issue with loongarch64): riscv: add riscv arch support