From 456fc99e8feac598f7c6f1a3aaa82bf994404e39 Mon Sep 17 00:00:00 2001 From: Alex Auvolat Date: Tue, 2 Dec 2014 18:10:14 +0100 Subject: Begin implementation of paging --- kernel/include/paging.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 kernel/include/paging.h (limited to 'kernel/include') 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 + +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 :*/ -- cgit v1.2.3