| /* segselect.h - IA-32 segment selector header */ |
| |
| /* |
| * Copyright (c) 2012-2014, Wind River Systems, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1) Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * 2) Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * 3) Neither the name of Wind River Systems nor the names of its contributors |
| * may be used to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| 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 */ |
