| /* segselect.h - IA-32 segment selector header */ |
| |
| /* |
| * Copyright (c) 2012-2014, Wind River Systems, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| DESCRIPTION |
| This header contains the IA-32 segment selector defintions. These are extracted |
| into their own file so they can be shared with the host tools. |
| */ |
| |
| #ifndef _SEGSELECT_H |
| #define _SEGSELECT_H |
| |
| /* |
| * Segment selector macros for the various entries in the GDT. These are |
| * actually byte offsets from the start of the entry table (tGdtHeader->pEntries) |
| * that are loaded into the appropriate CPU segment register (along with the |
| * appropriate T bit and privilege level bits). |
| * |
| * When referencing a specific GDT descriptor via tGdtHeader->pEntries, use |
| * XXX_SEG_SELECTOR/sizeof(tGdtDesc) |
| */ |
| |
| #define NULL_SEG_SELECTOR 0 |
| #define KERNEL_CODE_SEG_SELECTOR 0x0008 |
| #define KERNEL_DATA_SEG_SELECTOR 0x0010 |
| |
| #endif /* !_SEGSELECT_H */ |
