diff options
Diffstat (limited to 'src/kernel/include/paging.h')
| -rw-r--r-- | src/kernel/include/paging.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/kernel/include/paging.h b/src/kernel/include/paging.h index 67f9fef..702391e 100644 --- a/src/kernel/include/paging.h +++ b/src/kernel/include/paging.h @@ -11,6 +11,17 @@ #define PF_RSVD_WRITE_BIT (1<<3) #define PF_OPFETCH_BIT (1<<4) +#define PTE_PRESENT (1<<0) +#define PTE_RW (1<<1) +#define PTE_USER (1<<2) +#define PTE_WRITE_THROUGH (1<<3) +#define PTE_DISABLE_CACHE (1<<4) +#define PTE_ACCESSED (1<<5) +#define PTE_DIRTY (1<<6) // only PTE +#define PTE_SIZE_4M (1<<7) // only PDE +#define PTE_GLOBAL (1<<8) // only PTE +#define PTE_FRAME_SHIFT 12 + struct page_directory; typedef struct page_directory pagedir_t; @@ -25,6 +36,7 @@ void switch_pagedir(pagedir_t *pd); // these functions are always relative to the currently mapped page directory uint32_t pd_get_frame(void* vaddr); // get physical frame for virtual address +uint32_t pd_get_entry(void* vaddr); // same as pd_get_frame but returns whole entry with flags bool pd_map_page(void* vaddr, uint32_t frame_id, bool rw); // returns true on success, false on failure void pd_unmap_page(void* vaddr); // does nothing if page not mapped |