Inside Macintosh: Mac OS Runtime Architectures /

Chapter 4 - PowerPC Runtime Conventions

This chapter covers specific low-level details of the PowerPC runtime environment, including the following:

• data storage types
• stack structure
• routine calling conventions

These conventions may be useful for low-level programming (if you are writing in assembly language, for example) or for optimizing higher-level code.

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Chapter Contents

Data Types

Data Alignment

PowerPC Stack Structure

Prologs and Epilogs

The Red Zone

Routine Calling Conventions

Function Return

Register Preservation