# ABI overview

The ABI defines a set of conventions that enables the inter-operation
of code written in different languages and at different times. These
conventions include:

- Hardware representation of C data types
- Software stack configuration
- Parameter passing
- Return values
- Register usage across function calls
- C++ exception handling
- Operating system interface
- Process initialization
- Program loading
- Object files
- Program headers
- Dynamic linking
- Thread-local storage

Coding examples are provided for some of the basic operations.

Last Published: Oct 06, 2026

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