Logging program counter on reset.

摘要

A data processing apparatus and method providing a reset function for recovering from a system crash. Upon activation of a reset signal (nRESET), the contents of a program counter (R15pc) are saved within another register (R14svc) prior to the reinitialisation of the system. The contents of the register saving the program counter value are preserved through the reset operation to provide information as to where the particular problem requiring the reset signal occurred within the instruction address sequence.