2 * Page table and page directory flags.
3 * NetWatch system management mode administration console
5 * Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved.
6 * This program is free software; you can redistribute and/or modify it under
7 * the terms found in the file LICENSE in the root of this source tree.
14 #define PTE_FOR(x) (((unsigned int)(x) >> 12) & 0x3FF)
15 #define PDE_FOR(x) ((unsigned int)(x) >> 22)
16 #define ADDR_12_MASK(x) ((unsigned int)(x) & ~((1 << 12) - 1))
17 #define ADDR_22_MASK(x) ((unsigned int)(x) & ~((1 << 22) - 1))
18 #define LOWER_12(x) ((unsigned int)(x) & ((1 << 12) - 1))
19 #define LOWER_22(x) ((unsigned int)(x) & ((1 << 22) - 1))
21 #define PDE_4M_ADDR_SHIFT 22
22 #define PTE_4K_ADDR_SHIFT 12
23 #define PDE_TABLE_ADDR_SHIFT 12
24 #define PTE_FRAME_ADDR_MASK (~((1 << PTE_4K_ADDR_SHIFT) - 1))
25 #define PDE_TABLE_ADDR_MASK (~((1 << PDE_TABLE_ADDR_SHIFT) - 1))
27 #define PDE_ATTRIB_INDEX (1 << 12)
28 #define PDE_GLOBAL (1 << 8)
29 #define PDE_PAGE_SIZE (1 << 7)
30 #define PDE_DIRTY (1 << 6)
31 #define PDE_ACCESSED (1 << 5)
32 #define PDE_NO_CACHE (1 << 4)
33 #define PDE_WRITE_THROUGH (1 << 3)
34 #define PDE_USER (1 << 2)
35 #define PDE_READ_WRITE (1 << 1)
36 #define PDE_PRESENT (1 << 0)
38 #define PTE_GLOBAL (1 << 8)
39 #define PTE_ATTRIB_INDEX (1 << 7)
40 #define PTE_DIRTY (1 << 6)
41 #define PTE_ACCESSED (1 << 5)
42 #define PTE_NO_CACHE (1 << 4)
43 #define PTE_WRITE_THROUGH (1 << 3)
44 #define PTE_USER (1 << 2)
45 #define PTE_READ_WRITE (1 << 1)
46 #define PTE_PRESENT (1 << 0)
48 #endif /* _VM_FLAGS_H */