Crate polished_panic_handler 

Custom Panic Handler for Polished Kernel

This crate provides a custom panic handler for use in low-level, no_std Rust environments such as OS kernels or bootloaders.

How Rust Uses This Panic Handler

In Rust, when a panic occurs (e.g., via panic!() or an assertion failure), the compiler looks for a function marked with the #[panic_handler] attribute. In no_std environments, you must provide your own panic handler, as the standard library’s default is unavailable. This function is called with a reference to a core::panic::PanicInfo struct, which contains information about the panic location and message.

This implementation:

• Uses serial logging (via the serial_logging crate) to output panic information to a serial port, which is essential for debugging in early boot or kernel code where no display is available.
• Prints the panic location (file, line, column) and message, if available.
• Halts the CPU after logging, preventing further execution.

Usage

Link this crate in your kernel or bootloader. When a panic occurs, information will be sent over the serial port for developer diagnostics.

Functions

panic

Custom panic handler for the kernel.

print_panic_info_serial

Print detailed panic information to the serial port for debugging.