Begin implementation of paging

1 files changed, 25 insertions, 0 deletions

diff --git a/kernel/include/paging.h b/kernel/include/paging.h
new file mode 100644
index 0000000..5766e65
--- /dev/null
+++ b/kernel/include/paging.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <sys.h>
+
+struct page_directory;
+typedef struct page_directory pagedir_t;
+
+
+void paging_setup(void* kernel_data_end);
+
+pagedir_t *get_current_pagedir();
+pagedir_t *get_kernel_pagedir();
+
+void switch_pagedir(pagedir_t *pd);
+
+uint32_t pd_get_frame(pagedir_t *pd, size_t vaddr);		// get physical frame for virtual address
+int pd_map_page(pagedir_t *pd,
+				size_t vaddr, uint32_t frame_id,
+				uint32_t rw);		// returns nonzero on error
+void pd_unmap_page(pagedir_t *pd, size_t vaddr);	// does nothing if page wasn't mapped
+
+pagedir_t *create_pagedir();		// returns zero on error
+void delete_pagedir(pagedir_t *pd);
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/