tss.h

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    1 /*
    2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
    7  * 
    8  * This file contains Original Code and/or Modifications of Original Code
    9  * as defined in and that are subject to the Apple Public Source License
   10  * Version 2.0 (the 'License'). You may not use this file except in
   11  * compliance with the License. Please obtain a copy of the License at
   12  * http://www.opensource.apple.com/apsl/ and read it before using this
   13  * file.
   14  * 
   15  * The Original Code and all software distributed under the License are
   16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   20  * Please see the License for the specific language governing rights and
   21  * limitations under the License.
   22  * 
   23  * @APPLE_LICENSE_HEADER_END@
   24  */
   25 /*
   26  * @OSF_COPYRIGHT@
   27  */
   28 /* 
   29  * Mach Operating System
   30  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
   31  * All Rights Reserved.
   32  * 
   33  * Permission to use, copy, modify and distribute this software and its
   34  * documentation is hereby granted, provided that both the copyright
   35  * notice and this permission notice appear in all copies of the
   36  * software, derivative works or modified versions, and any portions
   37  * thereof, and that both notices appear in supporting documentation.
   38  * 
   39  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   40  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   41  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   42  * 
   43  * Carnegie Mellon requests users of this software to return to
   44  * 
   45  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   46  *  School of Computer Science
   47  *  Carnegie Mellon University
   48  *  Pittsburgh PA 15213-3890
   49  * 
   50  * any improvements or extensions that they make and grant Carnegie Mellon
   51  * the rights to redistribute these changes.
   52  */
   53 /*
   54  */
   55 
   56 #ifndef _I386_TSS_H_
   57 #define _I386_TSS_H_
   58 
   59 /*
   60  *      i386 Task State Segment
   61  */
   62 struct i386_tss {
   63         int             back_link;      /* segment number of previous task,
   64                                            if nested */
   65         int             esp0;           /* initial stack pointer ... */
   66         int             ss0;            /* and segment for ring 0 */
   67         int             esp1;           /* initial stack pointer ... */
   68         int             ss1;            /* and segment for ring 1 */
   69         int             esp2;           /* initial stack pointer ... */
   70         int             ss2;            /* and segment for ring 2 */
   71         int             cr3;            /* CR3 - page table directory
   72                                                  physical address */
   73         int             eip;
   74         int             eflags;
   75         int             eax;
   76         int             ecx;
   77         int             edx;
   78         int             ebx;
   79         int             esp;            /* current stack pointer */
   80         int             ebp;
   81         int             esi;
   82         int             edi;
   83         int             es;
   84         int             cs;
   85         int             ss;             /* current stack segment */
   86         int             ds;
   87         int             fs;
   88         int             gs;
   89         int             ldt;            /* local descriptor table segment */
   90         unsigned short  trace_trap;     /* trap on switch to this task */
   91         unsigned short  io_bit_map_offset;
   92                                         /* offset to start of IO permission
   93                                            bit map */
   94 };
   95 
   96 #endif  /* _I386_TSS_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/osfmk/i386/tss.h

FreeBSD/Linux Kernel Cross Reference
sys/osfmk/i386/tss.h