diff options
Diffstat (limited to 'kernel/include/arch/i686/paging.h')
| -rw-r--r-- | kernel/include/arch/i686/paging.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/kernel/include/arch/i686/paging.h b/kernel/include/arch/i686/paging.h new file mode 100644 index 0000000..3c0c335 --- /dev/null +++ b/kernel/include/arch/i686/paging.h @@ -0,0 +1,33 @@ +#pragma once + +#include <stddef.h> + +struct page_directory_t { // 32 bits + unsigned int present : 1; + unsigned int rw_flag : 1; + unsigned int access_lvl : 1; //0 is for only ring0. 1 is for anybody. + unsigned int write_through : 1; + unsigned int cache_off : 1; + unsigned int accessed : 1; + unsigned int zero : 1; + unsigned int page_size : 1; + unsigned int unused : 4; + unsigned int tbl_addr : 20; +}; + +struct page_table_t { // 32 bits + unsigned int present : 1; + unsigned int rw_flag : 1; + unsigned int access_lvl : 1; //0 is for only ring0. 1 is for anybody. + unsigned int write_through : 1; + unsigned int cache_off : 1; + unsigned int accessed : 1; + unsigned int dirty : 1; + unsigned int zero : 1; + unsigned int global : 1; + unsigned int reserved : 3; + unsigned int phys_addr : 20; +}; + +extern void ident_map_addr(void *addr, size_t len); +extern void ident_unmap_addr(void *addr, size_t len); |