Started work on kernel class

src/kernel.hpp

@@ -0,0 +1,68 @@
+#ifndef KERNEL_H
+#define KERNEL_H
+
+#include "systypes.hpp"
+
+class Kernel
+{
+public:
+
+    Kernel();
+
+    /**
+     * Maps a region of pages starting at the virtual address 'page', allocating
+     * each mapped frame and any necessary page tables.
+     * 
+     * @param page The virtual address of the first page to map
+     * @param length The size in bytes of the region to map
+     * @param flags The flags to apply to each page
+     * 
+     * @returns zero upon success, nonzero on failure
+     */
+    int allocateRegion(void* page, size_t length, int flags);
+
+    /**
+     * Maps a contiguous region of pages to a configuous region of frames,
+     * allocating new page tables as needed. All pages will share the same
+     * flags.
+     * 
+     * @param page The virtual address of the first page to map
+     * @param frame The physical address of the first frame to map to
+     * @param length The size in bytes of the region to map
+     * @param flags The flags to apply to each page
+     * 
+     * @returns zero upon success, nonzero on failure
+     */
+    int mapRegion(void* page, physaddr_t frame, size_t length, int flags);
+
+    /**
+     * Maps a single page to a single frame. Allocates a new page table if one
+     * does not exist for that frame.
+     * 
+     * @param page the virtual address of the page to map
+     * @param frame the physical address of the frame to map to
+     * @param flags flags to apply to the entry
+     * 
+     * @returns zero upon success, nonzero on failure
+     */
+    int mapPage(void* page, physaddr_t frame, int flags);
+
+    /**
+     * Reserve a single page frame.
+     * 
+     * @returns the physical address of the reserved frame.
+     */
+    physaddr_t reserveFrame();
+
+    /**
+     * Frees a single page frame.
+     */
+    void freeFrame(physaddr_t frame);
+
+private:
+
+
+
+};
+
+#endif