section .text
global enter_section
extern printf	

enter_section:
        enter 0, 0         ; 0 bytes of local stack space
        mov   ebx,[ebp+8]     ; first parameter to function
	
	
spin:	push busy
	call printf
	lock bts dword [ebx], 0
	jc spin

        leave                   ; mov esp,ebp / pop ebp
        ret     

section .rodata
busy:	db "Busy waiting!",10,0