usr/src/uts/intel/sys/segment.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  28 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T   */
  29 /*        All Rights Reserved   */
  30
  31 #ifndef _SYS_SEGMENT_H
  32 #define _SYS_SEGMENT_H
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /* access rights for data segments */
  39 #define UDATA_ACC1      0xF2    /* present dpl=3 writable */
  40 #define DATA_ACC2       0xC     /* 4Kbyte gran. 4Gb limit avl=0 */
  41 #define DATA_ACC2_S     0x4     /* 1 byte gran., 32bit operands, avl=0 */
  42 #define UTEXT_ACC1      0xFA    /* present dpl=3 readable */
  43 #define TEXT_ACC2       0xC     /* 4Kbyte gran., 32 bit operands avl=0 */
  44 #define TEXT_ACC2_S     0x4     /* 1 byte gran., 32 bit operands avl=0 */
  45 #define LDT_UACC1       0xE2    /* present dpl=3 type=ldt */
  46 #define LDT_ACC2        0x0     /* G=0 avl=0 */
  47 #define TGATE_UACC1     0xE5    /* present dpl=3 type=task gate         */
  48 #define SEG_CONFORM     0X4     /* conforming bit in acc0007 */
  49
  50 #define LDT_TYPE        0x2     /* type of segment is LDT */
  51
  52
  53 /* access rights field for gates */
  54
  55 #define GATE_UACC       0xE0            /* present and dpl = 3 */
  56 #define GATE_386CALL    0xC             /* 386 call gate */
  57
  58 #ifdef  __cplusplus
  59 }
  60 #endif
  61
  62 #endif  /* _SYS_SEGMENT_H */