Pascal on 64-bit Windows 10: A Comprehensive Guide

The IBM PC revolutionized the world of computing by introducing the Microsoft Disk Operating System (DOS), which paved the way for the development of modern operating systems like Windows. However, it was not equipped with a compiler, leaving programmers to rely on manufacturer-specific programming tools. This article delves into the intricacies of Pascal programming on 64-bit Windows 10, exploring its calling conventions, type representations, and name mangling.

Prior to the advent of microcomputers, machine manufacturers typically provided operating systems and compilers for various programming languages. In contrast, early microcomputers like the Commodore Pet and Apple II often lacked an operating system or compilers. This disparity in implementation led to subtle differences in how various compilers handled calling conventions, making it challenging to interface code compiled by different compilers.

The Application Binary Interface (ABI) plays a crucial role in Pascal programming on 64-bit Windows 10. It encompasses the assignment of sizes and formats to programming-language types, as well as name mangling, which determines how symbol names are mapped to linker symbols.

When programming with Pascal on 64-bit Windows 10, it is essential to understand the intricacies of calling conventions. This includes:

1. Stack preparation: The process of preparing the stack for a function call, including the allocation of memory space and the placement of parameters.

2. Callee-saved registers: Registers that the called function must preserve for the caller, ensuring the integrity of program execution.

3. Parameter passing: The method used to pass parameters between functions, which can involve pushing values onto the stack or allocating them in registers.

4. Atomic parameter allocation: The order in which atomic (scalar) parameters are allocated, as well as individual parts of complex parameters.

To effectively utilize Pascal on 64-bit Windows 10, developers must grasp these fundamental concepts and adapt their programming approach accordingly. By doing so, they can harness the full potential of this powerful language, leveraging its capabilities to create efficient, reliable, and scalable applications.

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This article aims to provide a comprehensive overview of Pascal programming on 64-bit Windows 10, highlighting key aspects such as calling conventions, type representations, and name mangling. By understanding these concepts, developers can unlock the full potential of this language, creating robust applications that thrive in the modern computing landscape.

Pascal 64 bit windows 10