Detection Of Return Oriented Programming Attacks
    12.
    发明申请
    Detection Of Return Oriented Programming Attacks 审中-公开
    检测面向回程的编程攻击

    公开(公告)号:US20140123286A1

    公开(公告)日:2014-05-01

    申请号:US13799663

    申请日:2013-03-13

    IPC分类号: G06F21/56

    摘要: In one embodiment, a processor includes at least one execution unit and Return Oriented Programming (ROP) detection logic. The ROP detection logic may determine a ROP metric based on a plurality of control transfer events. The ROP detection logic may also determine whether the ROP metric exceeds a threshold. The ROP detection logic may also, in response to a determination that the ROP metric exceeds the threshold, provide a ROP attack notification.

    摘要翻译: 在一个实施例中,处理器包括至少一个执行单元和返回定向编程(ROP)检测逻辑。 ROP检测逻辑可以基于多个控制传送事件来确定ROP度量。 ROP检测逻辑还可以确定ROP度量是否超过阈值。 ROP检测逻辑还可以响应于ROP度量超过阈值的确定,提供ROP攻击通知。

    Efficient saving and restoring state in task switching
    17.
    发明授权
    Efficient saving and restoring state in task switching 失效
    任务切换中有效的保存和恢复状态

    公开(公告)号:US06898700B2

    公开(公告)日:2005-05-24

    申请号:US09053398

    申请日:1998-03-31

    IPC分类号: G06F9/315 G06F9/46 G06F9/22

    CPC分类号: G06F9/30043 G06F9/462

    摘要: The present invention discloses a method and apparatus for saving and restoring registers. A single instruction is decoded. The single instruction moves contents of a plurality of registers associated with a functional unit in a processor to a memory; the processor operates under a plurality of operational modes and operand sizes. The single instruction arranges the contents in the memory according to a predetermined format into a plurality of groups, each group is aligned at an address boundary which corresponds to a multiple of 2N bytes. The predetermined format is constant for the plurality of operational modes and operand sizes. The single instruction retains the contents of the plurality of registers after moving.

    摘要翻译: 本发明公开了一种保存和恢复寄存器的方法和装置。 单个指令被解码。 单个指令将与处理器中的功能单元相关联的多个寄存器的内容移动到存储器; 处理器在多种操作模式和操作数大小下工作。 单个指令根据预定格式将内容排列到多个组中,每组在对应于2×N个字节的倍数的地址边界对齐。 对于多个操作模式和操作数大小,预定格式是恒定的。 单指令在移动后保留多个寄存器的内容。