projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| a1e8986d JJ |
1 | /** @file\r |
| 2 | C based implemention of IA32 interrupt handling only\r | |
| 3 | requiring a minimal assembly interrupt entry point.\r | |
| 4 | \r | |
| 5 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
| 6 | This program and the accompanying materials\r | |
| 7 | are licensed and made available under the terms and conditions of the BSD License\r | |
| 8 | which accompanies this distribution. The full text of the license may be found at\r | |
| 9 | http://opensource.org/licenses/bsd-license.php\r | |
| 10 | \r | |
| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 13 | \r | |
| 14 | **/\r | |
| 15 | \r | |
| 16 | #ifndef _CPU_GDT_H_\r | |
| 17 | #define _CPU_GDT_H_\r | |
| 18 | \r | |
| 19 | //\r | |
| 20 | // Local structure definitions\r | |
| 21 | //\r | |
| 22 | \r | |
| 23 | #pragma pack (1)\r | |
| 24 | \r | |
| 25 | //\r | |
| 26 | // Global Descriptor Entry structures\r | |
| 27 | //\r | |
| 28 | \r | |
| 29 | typedef struct _GDT_ENTRY {\r | |
| 30 | UINT16 Limit15_0;\r | |
| 31 | UINT16 Base15_0;\r | |
| 32 | UINT8 Base23_16;\r | |
| 33 | UINT8 Type;\r | |
| 34 | UINT8 Limit19_16_and_flags;\r | |
| 35 | UINT8 Base31_24;\r | |
| 36 | } GDT_ENTRY;\r | |
| 37 | \r | |
| 38 | typedef\r | |
| 39 | struct _GDT_ENTRIES {\r | |
| 40 | GDT_ENTRY Null;\r | |
| 41 | GDT_ENTRY Linear;\r | |
| 42 | GDT_ENTRY LinearCode;\r | |
| 43 | GDT_ENTRY SysData;\r | |
| 44 | GDT_ENTRY SysCode;\r | |
| 45 | GDT_ENTRY LinearCode64;\r | |
| 46 | GDT_ENTRY Spare4;\r | |
| 47 | GDT_ENTRY Spare5;\r | |
| 48 | } GDT_ENTRIES;\r | |
| 49 | \r | |
| 50 | #pragma pack ()\r | |
| 51 | \r | |
| 52 | #define NULL_SEL OFFSET_OF (GDT_ENTRIES, Null)\r | |
| 53 | #define LINEAR_SEL OFFSET_OF (GDT_ENTRIES, Linear)\r | |
| 54 | #define LINEAR_CODE_SEL OFFSET_OF (GDT_ENTRIES, LinearCode)\r | |
| 55 | #define SYS_DATA_SEL OFFSET_OF (GDT_ENTRIES, SysData)\r | |
| 56 | #define SYS_CODE_SEL OFFSET_OF (GDT_ENTRIES, SysCode)\r | |
| 57 | #define LINEAR_CODE64_SEL OFFSET_OF (GDT_ENTRIES, LinearCode64)\r | |
| 58 | #define SPARE4_SEL OFFSET_OF (GDT_ENTRIES, Spare4)\r | |
| 59 | #define SPARE5_SEL OFFSET_OF (GDT_ENTRIES, Spare5)\r | |
| 60 | \r | |
| 61 | #if defined (MDE_CPU_IA32)\r | |
| 62 | #define CPU_CODE_SEL LINEAR_CODE_SEL\r | |
| 63 | #define CPU_DATA_SEL LINEAR_SEL\r | |
| 64 | #elif defined (MDE_CPU_X64)\r | |
| 65 | #define CPU_CODE_SEL LINEAR_CODE64_SEL\r | |
| 66 | #define CPU_DATA_SEL LINEAR_SEL\r | |
| 67 | #else\r | |
| 68 | #error CPU type not supported for CPU GDT initialization!\r | |
| 69 | #endif\r | |
| 70 | \r | |
| 71 | #endif // _CPU_GDT_H_\r | |
| 72 | \r |