| 29,8 → 29,10 |
|---|
| #ifndef __ia32_PAGE_H__ |
| #define __ia32_PAGE_H__ |
| |
| #include <mm/page.h> |
| #include <arch/types.h> |
| #include <arch/mm/frame.h> |
| #include <typedefs.h> |
| |
| #define PAGE_SIZE FRAME_SIZE |
| |
| 46,12 → 48,28 |
|---|
| #define PTL2_INDEX_ARCH(vaddr) 0 |
| #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x3ff) |
| |
| #define GET_PTL0_ADDRESS_ARCH() ((pte_t *) read_cr3()) |
| #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *)((((pte_t *)(ptl0))[(i)].frame_address)<<12)) |
| #define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
| #define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
| #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address)((((pte_t *)(ptl3))[(i)].frame_address)<<12)) |
| |
| #define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0))) |
| #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *)(ptl0))[(i)].frame_address = (a)>>12) |
| #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
| #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
| #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *)(ptl3))[(i)].frame_address = (a)>>12) |
| |
| #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i)) |
| #define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT |
| #define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT |
| #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i)) |
| |
| #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x)) |
| #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
| #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
| #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x)) |
| |
| struct page_specifier { |
| unsigned present : 1; |
| unsigned writeable : 1; |
| 65,8 → 83,32 |
|---|
| unsigned frame_address : 20; |
| } __attribute__ ((packed)); |
| |
| typedef struct page_specifier pte_t; |
| typedef struct page_specifier pte_t; |
| |
| static inline int get_pt_flags(pte_t *pt, index_t i) |
| { |
| pte_t *p = &pt[i]; |
| |
| return ( |
| (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT | |
| (!p->present)<<PAGE_PRESENT_SHIFT | |
| p->uaccessible<<PAGE_USER_SHIFT | |
| 1<<PAGE_READ_SHIFT | |
| p->writeable<<PAGE_WRITE_SHIFT | |
| 1<<PAGE_EXEC_SHIFT |
| ); |
| } |
| |
| static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
| { |
| pte_t *p = &pt[i]; |
| |
| p->page_cache_disable = !(flags & PAGE_CACHEABLE); |
| p->present = !(flags & PAGE_NOT_PRESENT); |
| p->uaccessible = flags & PAGE_USER; |
| p->writeable = flags & PAGE_WRITE; |
| } |
| |
| extern void page_arch_init(void); |
| |
| #endif |