Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Document Table of Contents Initialization with Shadow Register Sets

At initialization, system software must carry out the following tasks to ensure correct software functioning with shadow register sets:
  • After the gp register is initialized in the normal register set, copy it to all shadow register sets, to ensure that all code can correctly address the small data sections.
  • Copy the zero register from the normal register set to all shadow register sets, using the wrprs instruction.