User`s guide

Preface

Intended Audience

This manual is for software engineers responsible for porting application code:

• From VAX MACRO to OpenVMS MACRO running on OpenVMS Alpha

systems

• From VAX MACRO to OpenVMS MACRO running on OpenVMS I64 systems

• From OpenVMS MACRO running on OpenVMS Alpha systems to OpenVMS

MACRO running on OpenVMS I64 systems

You should have programming skills and an understanding of the relevant

operating systems.

Document Structure

This manual is divided into two parts.

Part I, Concepts and Methodology is composed of the the following chapters:

• Chapter 1, Preparing to Port Macro-32 Code, provides a methodology for

porting VAX MACRO code to an OpenVMS Alpha or OpenVMS I64 system.

• Chapter 2, How the MACRO Compiler Functions on Different Platforms,

describes how and when to use the features of the compiler, including

specialized directives and macros.

• Chapter 3, Recommended and Required Source Changes, describes how

to change those coding constructs that cannot be compiled by the MACRO

compiler.

• Chapter 4, Improving the Performance of Ported Code, describes several

compiler features that you can use to improve the performance of your ported

code.

• Chapter 5, MACRO Support for 64-Bit Addressing, describes the 64-bit

addressing support provided by the MACRO compiler and associated

components.

Part II, Reference is composed of the following appendixes:

• Appendix A, MACRO Compiler Qualiﬁers

• Appendix B, Specialized Directives

• Appendix C, MACRO Compiler Built-ins

• Appendix D, Macros for Porting from VAX to Alpha or I64

• Appendix E, Macros for 64-Bit Addressing