| /* |
| * Copyright (c) 2009 Corey Tabaka |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef __ARCH_DESCRIPTOR_H |
| #define __ARCH_DESCRIPTOR_H |
| |
| #include <sys/types.h> |
| |
| /* |
| * System Selectors |
| */ |
| #define CODE_SELECTOR 0x08 |
| #define DATA_SELECTOR 0x10 |
| #define VIDEO_SELECTOR 0x18 |
| #define TSS_SELECTOR 0x30 |
| |
| #define USER_CODE_SELECTOR 0x23 |
| #define USER_DATA_SELECTOR 0x2b |
| |
| /* |
| * Descriptor Types |
| */ |
| #define SEG_TYPE_TSS 0x9 |
| #define SEG_TYPE_TSS_BUSY 0xb |
| #define SEG_TYPE_TASK_GATE 0x5 |
| #define SEG_TYPE_INT_GATE 0xe // 32 bit |
| #define SEG_TYPE_DATA_RW 0x2 |
| #define SEG_TYPE_CODE_RW 0xa |
| |
| typedef uint16_t seg_sel_t; |
| |
| void set_global_desc(seg_sel_t sel, void *base, uint32_t limit, |
| uint8_t present, uint8_t ring, uint8_t sys, uint8_t type, uint8_t gran, uint8_t bits); |
| |
| #endif |