Methods and structure for trapping requests directed to hardware registers of an electronic circuit

摘要

Methods and structure are provided for trapping incoming requests directed to hardware registers of an electronic device. The electronic device that comprises a set of hardware registers that define a configuration of the electronic device, circuitry that implements programmable logic defining which hardware registers have been flagged for trapping incoming requests, and a shadow memory that includes values corresponding to the flagged hardware registers. The circuitry is further operable to access a value in shadow memory that corresponds to a flagged hardware register, responsive to receiving a request from an external device to access the flagged hardware register.

主权项

1. An electronic device comprising:
a set of hardware registers that define a configuration of the electronic device; circuitry that implements programmable logic defining which hardware registers have been flagged for trapping incoming requests; and a shadow memory that includes values corresponding to the flagged hardware registers, the circuitry further operable to access a value in the shadow memory that corresponds to a flagged hardware register, responsive to receiving a request from an external device to access the flagged hardware register.