Calling a DLL function created in rust from fasm

I am very new to assembly in general, so I wanted to see if I can get a simple project going. I want to (don't ask me why) export a few rust functions into a DLL. I am aware some rust council will try to assassinate me (maybe)

Code:


#[no_mangle]
pub fn myrusthello() {
    println!("Hello from Rust!");
}

in the assembly I got an example hello world program for windows which I modified:

Code:

format pe console


include 'include\win32ax.inc'

entry main


section '.txt' code executable readable

main:
    call [myrusthello]
    push 0
    call [ExitProcess]
      
section '.blah' import data readable

library kernel32,'kernel32.dll',\
    msvcrt,'msvcrt.dll', \
    testfunc,'testfunc.dll'

import kernel32, ExitProcess,'ExitProcess'
import testfunc, myrusthello, 'myrusthello'

Alright, this entire thing compiles with no issues. The rust function is compiled with

Code:

rustc --crate-type cdylib .\testfunc.rs

and the executable like so:

Code:

.\FASM.EXE .\fasmhello.asm

I get no output to std... I'm assuming the function isn't being imported correctly or I'm calling it the wrong way? The DLL file is in the same folder as the executable. Any ideas?

format pe64 console include 'win64a.inc' entry main section '.txt' code executable readable main: sub rsp, 40 call [myrusthello] xor rcx, rcx call [ExitProcess] .... ....