projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 18b84857 | 1 | /** @file\r |
| ca162103 | 2 | \r |
| b1f700a8 HT |
3 | Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r |
| 4 | This program and the accompanying materials \r | |
| ca162103 | 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r | |
| 7 | http://opensource.org/licenses/bsd-license.php \r | |
| 8 | \r | |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
| 11 | \r | |
| 12 | Module Name:\r | |
| 13 | VirtualMemory.h\r | |
| 14 | \r | |
| 15 | Abstract:\r | |
| 16 | \r | |
| 17 | Revision History:\r | |
| 18 | \r | |
| 18b84857 | 19 | **/\r |
| ca162103 | 20 | \r |
| 21 | #ifndef _VIRTUAL_MEMORY_H_\r | |
| 22 | #define _VIRTUAL_MEMORY_H_\r | |
| 23 | \r | |
| 24 | #pragma pack(1)\r | |
| 25 | \r | |
| 26 | //\r | |
| 27 | // Page Directory Entry 4K\r | |
| 28 | //\r | |
| 29 | typedef union {\r | |
| 30 | struct {\r | |
| 31 | UINT32 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
| 32 | UINT32 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
| 33 | UINT32 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
| 34 | UINT32 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
| 35 | UINT32 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
| 36 | UINT32 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
| 37 | UINT32 MustBeZero:3; // Must Be Zero\r | |
| 38 | UINT32 Available:3; // Available for use by system software\r | |
| 39 | UINT32 PageTableBaseAddress:20; // Page Table Base Address\r | |
| 40 | } Bits;\r | |
| 41 | UINT32 Uint32;\r | |
| 42 | } IA32_PAGE_DIRECTORY_ENTRY_4K;\r | |
| 43 | \r | |
| 44 | //\r | |
| 45 | // Page Table Entry 4K\r | |
| 46 | //\r | |
| 47 | typedef union {\r | |
| 48 | struct {\r | |
| 49 | UINT32 Present:1; // 0 = Not present in memory, 1 = Present in memory \r | |
| 50 | UINT32 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
| 51 | UINT32 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
| 52 | UINT32 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
| 53 | UINT32 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
| 54 | UINT32 Accessed:1; // 0 = Not accessed (cleared by software), 1 = Accessed (set by CPU)\r | |
| 55 | UINT32 Dirty:1; // 0 = Not written to (cleared by software), 1 = Written to (set by CPU)\r | |
| 56 | UINT32 PAT:1; // 0 = Disable PAT, 1 = Enable PAT\r | |
| 57 | UINT32 Global:1; // Ignored\r | |
| 58 | UINT32 Available:3; // Available for use by system software\r | |
| 59 | UINT32 PageTableBaseAddress:20; // Page Table Base Address\r | |
| 60 | } Bits;\r | |
| 61 | UINT32 Uint32;\r | |
| 62 | } IA32_PAGE_TABLE_ENTRY_4K;\r | |
| 63 | \r | |
| 64 | //\r | |
| 65 | // Page Table Entry 4M\r | |
| 66 | //\r | |
| 67 | typedef union {\r | |
| 68 | struct {\r | |
| 69 | UINT32 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
| 70 | UINT32 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
| 71 | UINT32 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
| 72 | UINT32 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
| 73 | UINT32 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
| 74 | UINT32 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
| 75 | UINT32 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r | |
| 76 | UINT32 MustBe1:1; // Must be 1 \r | |
| 77 | UINT32 Global:1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write\r | |
| 78 | UINT32 Available:3; // Available for use by system software\r | |
| 79 | UINT32 PAT:1; //\r | |
| 80 | UINT32 MustBeZero:9; // Must be zero;\r | |
| 81 | UINT32 PageTableBaseAddress:10; // Page Table Base Address\r | |
| 82 | } Bits;\r | |
| 83 | UINT32 Uint32;\r | |
| 84 | } IA32_PAGE_TABLE_ENTRY_4M;\r | |
| 85 | \r | |
| 86 | #pragma pack()\r | |
| 87 | \r | |
| 88 | #endif \r |