The GCC6809 Manual

Introduction to GCC6809

This is the manual for GCC6809, the port of the GNU C Compiler for the Motorola 6809 processor. This document describes version 4.3.4-1. It does not cover all aspects of GCC in general, for which you should refer to the regular GCC manual.

GCC6809 is developed by Brian Dominy brian@oddchange.com and is licensed under the GNU General Public License version 3 or later. The latest version of the software can be obtained at http://www.oddchange.com/gcc6809.

• Installation: How to install the compiler sources.
• Data Types: How the C data types are implemented.
• Calling Conventions: How function calls are implemented.
• Registers: How the compiler uses hardware registers.
• Interrupts: How to write an interrupt handler.
• Libraries
• Startup and Termination: How programs begin and end.
• Bank Switching: Writing programs with more than 64KB of code.
• Command-Line Options: Summary of 6809 options for further controlling compilation.
• Predefined Macros: How to test for certain features at compile-time.
• Attributes: How to request special handling for functions and data.
• Builtins: How to access some special 6809 instructions.
• The Simulator
• Helpful Hints: Miscellaneous but useful information.