boot.s

用开源软件自己动手写操作系统的源码,在linux下面实现

/* chapter2/1/boot.S

   Author: Wenbo Yang <[e-mail]> <http://solrex.cn>

   This file is part of the source code of book "Write Your Own OS with Free
   and Open Source Software". Homepage @ <http://share.solrex.cn/WriteOS/>.

   This file is licensed under the GNU General Public License; either
   version 3 of the License, or (at your option) any later version. */

.code16
.text
	mov		%cs,%ax
	mov		%ax,%ds
	mov		%ax,%es
	call	DispStr
	jmp		.
DispStr: 
	mov		$BootMessage, %ax
	mov		%ax,%bp
	mov		$16,%cx
	mov		$0x1301,%ax
	mov		$0x00c,%bx
	mov		$0,%dl
	int		$0x10
	ret
BootMessage:.ascii "Hello, OS world!"
.org 510
.word 0xaa55