harddisk.s

来自「阿基米德操作系统的源代码」· S 代码 · 共 56 行

.globl hd_interrupt

.align 4
hd_interrupt:
	cld
	pushl	%eax
	pushl	%ebx
	pushl	%ecx
	pushl	%edx
	pushl	%esi
	pushl	%edi
	pushl	%ebp

	push	%ds
	push	%es
	push	%fs
	push	%gs

	movl	$0x10,%eax
	mov		%ax,%ds
	mov		%ax,%es
	mov		%ax,%fs


	movl	$do_hd,%eax
	call	*%eax		

	movb	$0x20,%al
	outb	%al,$0xa0
	movb	$0x0b,%al
	outb	%al,$0xa0
	inb		$0xa0,%al
	cmpb	$0x00,%al
	jne		hd_interrupt_0

	movb	$0x20,%al
	outb	%al,$0x20

hd_interrupt_0:

	pop		%gs
	pop		%fs
	pop		%es
	pop		%ds

	popl	%ebp
	popl	%edi
	popl	%esi
	popl	%edx
	popl	%ecx
	popl	%ebx
	popl	%eax

	iret