Kernel: Add barebones GeneralAllocator for >4096B

kernel/include/kernel/Memory/GeneralAllocator.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <BAN/LinkedList.h>
+#include <kernel/Memory/Heap.h>
+#include <kernel/Memory/MMU.h>
+
+namespace Kernel
+{
+
+	class GeneralAllocator
+	{
+		BAN_NON_COPYABLE(GeneralAllocator);
+		BAN_NON_MOVABLE(GeneralAllocator);
+
+	public:
+		GeneralAllocator(MMU&);
+		~GeneralAllocator();
+
+		vaddr_t allocate(size_t);
+		bool deallocate(vaddr_t);
+
+	private:
+		struct Allocation
+		{
+			vaddr_t address { 0 };
+			BAN::Vector<paddr_t> pages;
+		};
+
+	private:
+		MMU& m_mmu;
+		BAN::LinkedList<Allocation> m_allocations;
+	};
+
+}

kernel/include/kernel/Memory/MMU.h

@@ -24,10 +24,10 @@ namespace Kernel
 		~MMU();
 
 		void identity_map_page(paddr_t, flags_t);
-		void identity_map_range(paddr_t, size_t, flags_t);
+		void identity_map_range(paddr_t, size_t bytes, flags_t);
 
 		void unmap_page(vaddr_t);
-		void unmap_range(vaddr_t, size_t);
+		void unmap_range(vaddr_t, size_t bytes);
 
 		void map_page_at(paddr_t, vaddr_t, flags_t);
 
@@ -35,10 +35,10 @@ namespace Kernel
 		flags_t get_page_flags(vaddr_t) const;
 
 		bool is_page_free(vaddr_t) const;
-		bool is_range_free(vaddr_t, size_t) const;
+		bool is_range_free(vaddr_t, size_t bytes) const;
 
 		vaddr_t get_free_page() const;
-		vaddr_t get_free_contiguous_pages(uint32_t) const;
+		vaddr_t get_free_contiguous_pages(size_t page_count) const;
 
 		void load();
 

kernel/include/kernel/Process.h

@@ -5,6 +5,7 @@
 #include <BAN/Vector.h>
 #include <kernel/FS/Inode.h>
 #include <kernel/Memory/FixedWidthAllocator.h>
+#include <kernel/Memory/GeneralAllocator.h>
 #include <kernel/Memory/Heap.h>
 #include <kernel/Memory/MMU.h>
 #include <kernel/SpinLock.h>
@@ -95,6 +96,7 @@ namespace Kernel
 		BAN::Vector<Thread*> m_threads;
 
 		BAN::LinkedList<FixedWidthAllocator> m_fixed_width_allocators;
+		GeneralAllocator* m_general_allocator;
 
 		MMU* m_mmu { nullptr };
 		TTY* m_tty { nullptr };