XFLAT Shared Libraries

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Instructions for obtaining XFLAT releases and CVS snapshots.

Contents:

• CVS Snapshots
• XFLAT Modules
• XFLAT Releases
• Development Status

Theory of Operation

General discussion of shared libraries, technical approaches for the implementation of shared libraries with no MMU, and an overview of the XFLAT shared library implementation.

Contents:

• Shared Libraries
• Static vs. Shared Libraries
• Shared Libraries and MMUs
• Shared Libraries, Position Independence, and the GOT
• Shared Libraries without an MMU
• The arm.org Approach
• XFLAT - An Alternative Approach to Shared Libraries without an MMU
• System Dependencies

uClinux, File Mapping, and Shared Libraries

Shared library technology depends on file-mapping or XIP filesystems. These may be issues in your implementation.

XFLAT and Threading

There are a few special issues to be aware of when using pthreads with XFLAT.

XFLAT and C++

What is the state of C++ support with XFLAT?

XFLAT and NXFLAT

XFLAT now has a little brother call NXFLAT. NXFLAT is a highly scaled down version of XFLAT intended to support the minimalistic requirements of the deeply embedded RTOS. NXFLAT is currently availabl only as a part of the NuttX RTOS

XFLAT FAQ

Having trouble using XFLAT? Maybe I have alread answered that question here.

Directory Structure

A description of the XFLAT source tree structure.

XFLAT Programming Interfaces

There are many pieces to the XFLAT shared library technology. This link addresses the C APIs that are available to the programmer for dynamically loading and using XFLAT shared libraries.

Contents:

• The dlfcn.h Header File
• dlopen()
• dlerror()
• dlsym()
• dlclose()
• dlmodule()
• dlfcncall()
• dlinitdesc()
• dlmkdesc()
• dlfreedesc()

Installing, Configuring, and Porting XFLAT Shared Libraries

This is an obsolute, pre-buildroot description of the requirements for porting XFLAT into a new environment.

Contents:

• Installing XFLAT Shared Libraries in the Toolchain
• Installing XFLAT Shared Libraries in the Target Filesystem
• Configuring XFLAT Shared Libraries
• Porting XFLAT Shared Libraries

XFLAT Shared Library Support Tools

This is an overview of the XFLAT build tools used for compiling and linking your XFLAT application.

Contents:

• XFLAT Tools Overview
• xflat-gcc
• xflat-ld
• Sample Makefile
• readxflat
• ldelflib
• ldelf2xflt

XFLAT Software License

Yes, it is open-source.

Shared Library Links

Information about XFLAT on the internet.

Copyright 2002 by Cadenux, LLC. All rights reserved.