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Solaris 64-bit Developer's Guide
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Document Information


1.  64-bit Computing

2.  When to Use 64-bit

3.  Comparing 32-bit Interfaces and 64-bit Interfaces

4.  Converting Applications

5.  The Development Environment

6.  Advanced Topics

SPARC V9 ABI Features

Stack Bias

Address Space Layout of the SPARC V9 ABI

Placement of Text and Data of the SPARC V9 ABI

Code Models of the SPARC V9 ABI

AMD64 ABI Features

Address Space Layout for amd64 Applications

Alignment Issues

Interprocess Communication

ELF and System Generation Tools

/proc Interface

Extensions to sysinfo(2)

libkvm and /dev/ksyms

libkstat Kernel Statistics

Changes to stdio

Performance Issues

64-bit Application Advantages

64-bit Application Disadvantages

System Call Issues

What Does EOVERFLOW Mean?

Beware ioctl()

A.  Changes in Derived Types

B.  Frequently Asked Questions (FAQs)


/proc Interface

The /proc interfaces are available to both 32-bit and 64-bit applications. 32-bit applications can examine and control the state of other 32-bit applications. Thus, an existing 32-bit debugger can be used to debug a 32-bit application.

64-bit applications can examine and control 32-bit or 64-bit applications. However, 32-bit applications are unable to control 64-bit applications, because the 32-bit APIs do not allow the full state of 64-bit processes to be described. Thus, a 64-bit debugger is required to debug a 64-bit application.