601
IBM
MQ Register (601 only)
Design DocumentNxp
PowerPC Processor Application Binary Interface (ABI) Supplement
Supplement to the PowerPC Processor ABI detailing low-level software conventions, register usage, and system header definitions for binary compatibility.
Overview
This document provides architectural specifications and conventions for the PowerPC Application Binary Interface (ABI). It defines low-level programming details including register assignments (GPRs 0-31, floating-point registers, and the IBM 601-specific MQ register), data representation, and system-level header definitions. The supplement covers essential structures for process management and signal handling, such as ucontext_t and mcontext_t, and provides constants for system interfaces like <unistd.h> and <sys/types.h> to ensure software compatibility across PowerPC-based systems.
Use Cases
- Compiler development and optimization for PowerPC architectures
- Operating system kernel and device driver implementation
- Ensuring binary compatibility between software modules on PowerPC systems
- Low-level system programming and debugging
Topics
PowerPC
ABI
IBM 601
Register Usage
Application Binary Interface
System V
ucontext
Binary Compatibility
Software Conventions
Referenced Parts
| 601 | IBM | MQ Register (601 only) |