Expand description
Memory management implementation
SV39 page-based virtual-memory architecture for RV64 systems, and everything about memory management, like frame allocator, page table, map area and memory set, is implemented here.
Every task or process has a memory_set to control its virtual memory.
Modules
Implementation of physical and virtual address and page number.
Implementation of FrameAllocator which
controls all the frames in the operating system.
The global allocator
Implementation of PageTableEntry and PageTable.
Structs
tracker for physical page frame allocation and deallocation
The kernel’s initial memory mapping(kernel address space)
map permission corresponding to that in pte: R W X U
address space
page table entry structure
physical address
physical page number
virtual address
virtual page number
Functions
Allocate a physical page frame in FrameTracker style
initiate heap allocator, frame allocator and kernel space
Return (bottom, top) of a kernel stack in kernel space.
remap test in kernel space
Translate&Copy a ptru8 array with LENGTH len to a mutable u8 Vec through page table