57 lines
2.3 KiB
C
57 lines
2.3 KiB
C
/* 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 */
|