Method and apparatus for propagating exception conditions of a computer
system
    1.
    发明授权
    Method and apparatus for propagating exception conditions of a computer system 失效
    传播计算机系统异常情况的方法和装置

    公开(公告)号:US5428807A

    公开(公告)日:1995-06-27

    申请号:US79498

    申请日:1993-06-17

    IPC分类号: G06F9/38 G06F9/00

    摘要: There is provided a mechanism for propagating exception conditions in a computer system when instructions are subject to exception conditions. The apparatus includes a set of data registers for storing data manipulated by the instructions of the computer system, and a set of state registers for storing speculative states of data manipulated by the instructions, there being one state register associated with each data register. Furthermore, the apparatus includes a logic circuit, coupled to the set of state registers, for propagating the states from a source one of the state registers to a destination one of the state registers, if data stored in an associated source one of the data registers are used as a source for an associated destination one of data registers, and if data stored in the source data register were manipulated by a particular instruction subject to an exception condition.

    摘要翻译: 当指令受到异常条件的限制时,提供了一种在计算机系统中传播异常情况的机制。 该装置包括一组数据寄存器,用于存储由计算机系统的指令操纵的数据,以及一组状态寄存器,用于存储由指令操纵的数据的推测状态,存在与每个数据寄存器相关联的一个状态寄存器。 此外,该装置包括耦合到一组状态寄存器的逻辑电路,用于将状态从状态寄存器中的一个状态寄存器传播到状态寄存器的目的地寄存器,如果数据存储在相关源中的一个数据寄存器 被用作相关联的目的地数据寄存器的源,并且如果存储在源数据寄存器中的数据被受异常条件的特定指令操纵。