/* 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
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */

/*
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 */