Need details for CPU Illegal Operation and Instruction Trapping, what is required for handling this?
Requirement from safety manual:
The Cortex-R4F CPU includes diagnostics for illegal operations and instructions that can serve as safety mechanisms. Many of these traps are not enabled after reset and must be configured by the software. Installation of software handlers to support the hardware illegal operation and instruction trapping is highly recommended. For more information on enabling traps, see the Cortex-R4 and Cortex-R4F Technical Reference Manual located at infocenter.arm.com/.../index.jsp. Examples of CPU illegal operation and instruction traps include: • Illegal instruction • Floating-point underflow and overflow • Floating point divide by zero • Privilege violation
