sirjson / rq3vm Goto Github PK

Now this is the first time for me to work with Rust and cargo. So this issue is either a README problem (to give the beginner some clear commands to type in) or there is actually a problem.

So I tried to run cargo run in the example/helloq3 folder:

error[E0580]: main function has wrong type
  --> src/main.rs:19:1
   |
19 | fn main() -> Result<(), io::Error> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found enum `std::result::Result`
   |
   = note: expected type `fn()`
              found type `fn() -> std::result::Result<(), std::io::Error>`

error: aborting due to 2 previous errors

error: Could not compile `helloq3`.

Before that I tried to run cargo build in the root directory.

I am not sure if those functions would work. Now at the moment they are not implemented, but I assume that there will be some dynamic memory allocation involved. As the VM can only work with the data section (memory sandbox), an outside host address would not work. So the malloc function needs to be implemented in the VM itself (there is a implementation for Quake 3 that does that: https://icculus.org/homepages/phaethon/q3/malloc/malloc.html). Or the host manages part of the memory sandbox from the outside. And supplies the VM with valid virtual addresses for the malloc calls.