disable.c

自己从头开始开发操作系统的几个实例

/*****************************************************************************
*****************************************************************************/
unsigned disable(void)
{
	unsigned ret_val;

	__asm__ __volatile__("pushfl\n"
		"popl %0\n"
		"cli"
		: "=a"(ret_val)
		:);
	return ret_val;
}