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feat: implement MMU core functionality

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* feat: Implement a basic MMU configuration

* feat: Enhance MMU by separating sections and configuring permissions

* feat: Update MMU configuration and memory allocation functions

* fix: Level 3 translation fault

* docs: add code documentation

* fix: linter

* feat: map translation tables to kernel space

* feat: move el1 stack to kernel VA space

* feat: use virtual memory for heap allocation

* docs: update Readme
This commit is contained in:
Alexander Neuhäuser
2026-03-17 19:30:45 +01:00
committed by GitHub
parent 55f410e2bb
commit f78388ee2c
23 changed files with 992 additions and 264 deletions
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36
workspace/heap/src/tests.rs
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@@ -100,7 +100,7 @@ fn test_merging_free_sections() {
);
let root_header = heap.start_address;
let root_header_start_size = unsafe { (*root_header).size };
let _root_header_start_size = unsafe { (*root_header).size };
let malloc1 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
let malloc_header_before = unsafe { *Heap::get_header_ref_from_data_pointer(malloc1) };
@@ -135,31 +135,29 @@ fn test_first_fit() {
);
let root_header = heap.start_address;
let root_header_start_size = unsafe { (*root_header).size };
let _root_header_start_size = unsafe { (*root_header).size };
let malloc1 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
let malloc2 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
let _malloc2 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
let malloc3 = heap.malloc(MIN_BLOCK_SIZE * 3).unwrap();
let malloc4 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
unsafe {
assert!(heap.free(malloc1).is_ok());
assert!(heap.free(malloc3).is_ok());
let malloc5 = heap.malloc(MIN_BLOCK_SIZE * 2).unwrap();
let malloc1_header = unsafe { *Heap::get_header_ref_from_data_pointer(malloc1) };
assert!(heap.free(malloc1).is_ok());
assert!(heap.free(malloc3).is_ok());
let malloc5 = heap.malloc(MIN_BLOCK_SIZE * 2).unwrap();
let malloc1_header = unsafe { *Heap::get_header_ref_from_data_pointer(malloc1) };
// First free block stays empty
assert!(malloc1_header.free);
// First free block stays empty
assert!(malloc1_header.free);
// New allocation takes the first fit aka. malloc3
assert_eq!(malloc5, malloc3);
// New allocation takes the first fit aka. malloc3
assert_eq!(malloc5, malloc3);
// If no free slot could be found, append to the end
let malloc6 = heap.malloc(MIN_BLOCK_SIZE * 2).unwrap();
assert!(malloc6 > malloc4);
// If no free slot could be found, append to the end
let malloc6 = heap.malloc(MIN_BLOCK_SIZE * 2).unwrap();
assert!(malloc6 > malloc4);
// Malloc7 takes slot of Malloc1
let malloc7 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
assert_eq!(malloc1, malloc7);
}
// Malloc7 takes slot of Malloc1
let malloc7 = heap.malloc(MIN_BLOCK_SIZE).unwrap();
assert_eq!(malloc1, malloc7);
}