;Main.asm
.386
.model small,c ;This bit is important, I think.
.stack 1000h
.data
hello db "Hello world!",0
.code
;includelib libucrt.lib ;All this shit is already here if you have a C object file
includelib legacy_stdio_definitions.lib ;Except for this. Basically printf, puts etc
;includelib libcmt.lib
;includelib libvcruntime.lib ;Visual Studio exception handling and type checking. Not needed otherwise
extrn printf:near ;Extern everything you are gonna use from the c obj files
extrn plusTwo:near
extrn exit:near
public plusOne ;Have to declare it public for the linker to see it. In NASM, it's .globl or global
plusOne proc ;Our int plusOne(int) function.
pop eax ;Parameters are stored on the stack.
add eax, 1
ret ;eax is whatever is returned from functions. Also why you can only return one thing.
plusOne endp
public main
main proc
push offset hello
call printf
push 1
call plusTwo
push 0
call exit
main endp
end ;End of file, not program
//bruh.c
//#include <stdio.h> Has to be included with "includelib legacy_stdio_definitions.lib" in the asm file for some reason.
//int printf(const char* format, ...);
extern int plusOne(int); //Extern everything you are gonna use from the asm obj files
int plusTwo(int num) {
return plusOne(plusOne(num)); //Plus one is defined in the assembly.
}