公开(公告)号：US20020174385A1

公开(公告)日：2002-11-21

申请号：US10021269

申请日：2001-12-12

Applicant: STMicroelectronics S.A.

Inventor： Andrew Cofler ,  Laurent Wojcieszak ,  Arnaud Dehamel ,  Isabelle Sename

IPC: H02H003/05

CPC classification number: G06F11/3632 ,  G06F9/30072 ,  G06F11/3648

Abstract: A computer system for executing instructions having assigned guard indicators, comprises instruction supply circuitry, pipelined execution units for receiving instructions from the supply circuitry together with at least one guard indicator selected from a set of guard indicators, the execution unit including a master guard value store containing master values for the guard indicators, and circuitry for resolving the guard values in the execution pipeline and providing a signal to indicate whether the pipeline is committed to the execution of the instruction, and an emulator having watch circuitry for effecting a watch on selected instructions supplied to the execution pipeline and synchronising circuitry for correlating resolution of the guard indicator of each selected instruction with a program count for that instruction.

Abstract translation: 一种用于执行具有分配的保护指示器的指令的计算机系统，包括指令提供电路，用于从供应电路接收指令的流水线执行单元以及从一组保护指示器中选择的至少一个保护指示符，所述执行单元包括主保护值存储 包括用于保护指示器的主值，以及用于解析执行流水线中的保护值的电路，以及提供用于指示流水线是否被提交到执行指令的信号的模块，以及具有用于对所选指令进行监视的监视电路的仿真器 提供给执行流水线和同步电路，用于将每个所选指令的保护指示符的分辨率与该指令的程序计数相关。