Creating a C function without compiler generated prologue/epilogue & RET instruction?

Question

Consider this function:

void foo(){
    //do something
}

In assembly it would look something like this (not accurate):

push         


        

Answer 1

I found a neat workaround:

Define the function in assembly but call a extern c function:

bits 32

global _bar
extern _foo

section .data

section .text

_bar:
    call _foo
    iret

in C:

void foo(){
    //do your stuff here
}

extern void bar();

//bar is now your "naked" function

compiled with nasm and gcc under windows