Nios® II Processor Reference Guide

ID 683836
Date 10/22/2020
Public
Document Table of Contents

3.4.3.2. 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.

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