test1.s

一个操作系统的源代码

	SECTION .text
	GLOBAL 	_start
_start:
	mov	eax, 0x3434
	xor	edx, edx
	xor	ecx, ecx
	mov	esi, 0xffffffff
	mov	edi, 0x40000004
	int	0x32	;map free pages
	or	eax, eax
	jz	_loop
        mov	eax, 0x20
	int	0x3b	; sleep
	int	0x37	; process id
	mov	edx, eax
	mov	eax, 0x02
	mov	esi, 0x40000004
	int	0x34	; unmap
	mov	eax, _scheduler
	int	0x40
_loop:	
	int	0x90
	jmp	_loop
_scheduler:	
	int	0x41