hamidrezakp / rust-os Goto Github PK

We must write things that have done, read and learn.
Including Virtualization book, Os book and CS140 course.

No need to be a lot of details, but some headline and a line of explanation suffices.

We must set up the programmable interrupt controller to correctly forward hardware interrupts to the CPU. To handle these interrupts we add new entries to our interrupt descriptor table, just like we did for our exception handlers. We get periodic timer interrupts and input from the keyboard.

We must implement paging support in our kernel. It needs different techniques to make the physical page table frames accessible to the kernel. Then implement an address translation function and a function to create a new mapping.

We must adds support for heap allocation to our kernel. We implement the basic allocation interface of Rust, creates a heap memory region, and sets up an allocator crate. At the end all the allocation and collection types of the built-in alloc crate will be available to our kernel.

All of things we have developed and explanation of them.

documentations must be in wiki of repo.

All of things we have developed and explanation of them.

documentations must be in wiki of repo.

We must handle the double fault exception, which occurs when the CPU fails to invoke an exception handler. By handling this exception we avoid fatal triple faults that cause a system reset. To prevent triple faults in all cases we also set up an Interrupt Stack Table to catch double faults on a separate kernel stack.

CPU exceptions occur in various erroneous situations, for example when accessing an invalid memory address or when dividing by zero. To react to them we have to set up an interrupt descriptor table that provides handler functions. At the end, our kernel will be able to catch breakpoint exceptions and to resume normal execution afterwards.