// c code
MyFunction1(a, b);

// assembly code
main:
  push a
  push b
  push rbp ; save frame pointer on stack
  mov rsp, rbp  ; save stack pointer in frame pointer
  xor rax, rax  ; set function return value to 0.
  call _MyFunction
  mov rbp, rsp  ; restore stack pointer
  pop rbp ; restore frame pointer
  ret ; return to calling function

ile.c:
foo(int x)
{
    return x+1;
}

file.s:
        .file   "t.c"
        .text
.globl foo
        .type   foo, @function
foo:
        pushl   %ebp
        movl    %esp, %ebp
        movl    8(%ebp), %eax
        addl    $1, %eax
        popl    %ebp
        ret
        .size   foo, .-foo
        .ident  "GCC: (Ubuntu 4.4.3-4ubuntu5.1) 4.4.3"
        .section        .note.GNU-stack,"",@progbits