Description: The Application Binary Interface (ABI) is a set of conventions that defines how binary code components interact with each other in a computer system. This includes aspects such as the format of executable files, calling conventions for functions, memory management, and data representation. The ABI is crucial for ensuring that different programs and libraries can communicate and function correctly in the same environment, regardless of how they were compiled. Unlike an Application Programming Interface (API), which focuses on interaction at the source code level, the ABI deals with interaction at the binary code level, allowing software written in different programming languages to interoperate. In real-time operating systems, the ABI is especially important as it ensures that critical applications can run efficiently and predictably. Additionally, the distinction between Kernel Mode and User Mode is also influenced by the ABI, as it defines how user-mode applications can access operating system resources and how calls to the system kernel are managed. In summary, the ABI is a fundamental component in software architecture, facilitating compatibility and interoperability among different systems and applications.
