diff options
Diffstat (limited to 'kernel/includes/mmu.h')
| -rw-r--r-- | kernel/includes/mmu.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/includes/mmu.h b/kernel/includes/mmu.h index 9a27c5b..43814d5 100644 --- a/kernel/includes/mmu.h +++ b/kernel/includes/mmu.h @@ -9,8 +9,11 @@ typedef u8 mmu_flags; #define MMU_FLAG_RW (1 << 0) #define MMU_FLAG_KERNEL (1 << 1) -void *next_page(void *a); -void *align_page(void *a); +#define PAGE_SIZE ((uintptr_t)0x1000) +#define next_page(_ptr) \ + ((_ptr) + (PAGE_SIZE - (((uintptr_t)_ptr) & (PAGE_SIZE - 1)))) +#define align_page(_ptr) \ + (((((uintptr_t)_ptr) & (PAGE_SIZE - 1)) > 0) ? next_page((_ptr)) : (_ptr)) typedef struct Page { u32 present : 1; |