UM0438 datasheet(7/50 Pages) STMICROELECTRONICS

7 / 50 page

UM0438

Preface

7/50

Preface

About this book

The primary objective of this manual is to help programmers provide software that is

compatible across the family of processors using variable-length encoding (VLE) extension.

Individual VLE technology implementations are beyond the scope of this manual. Each

processor is unique in its implementation of the VLE extension.

The information in this book is subject to change without notice. As with any technical

documentation, it is the reader’s responsibility to ensure they are using the most recent

version of the documentation. For more information, contact your sales representative.

Audience

This manual is for system software and application programmers who want to develop

products using the VLE extension. An understanding of operating systems, microprocessor

system design, the basic principles of RISC processing, and the VLE instruction set is

assumed.

Organization

Following is a summary of the major sections of this manual:

●

Section 1: Overview provides a general understanding of what the programming model

defines in the VLE extension.

●

Section 2: Application Binary Interface (ABI) describes the VLE extensions for the

PowerPC™ e500 Application Binary Interface (e500 ABI) to support VLE technology.

●

Section 3: Instruction set provides an overview of the VLE instruction set architecture.

For a detailed description of each instruction, including assembly language syntax,

refer to the VLE section of the EREF.

●

Appendix A: Simplified mnemonics for VLE instructions describes simplified

mnemonics, which are provided for easier coding of assembly language programs

using VLE technology.

UM0438 Datasheet(PDF) 7 Page - STMicroelectronics