The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/trap.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991,1990 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        trap.h,v $
   29  * Revision 2.5  91/05/14  16:18:26  mrt
   30  *      Correcting copyright
   31  * 
   32  * Revision 2.4  91/02/05  17:15:33  mrt
   33  *      Changed to new Mach copyright
   34  *      [91/02/01  17:38:51  mrt]
   35  * 
   36  * Revision 2.3  90/10/25  14:45:03  rwd
   37  *      Added watchpoint support.
   38  *      [90/10/18            rpd]
   39  * 
   40  * Revision 2.2  90/05/03  15:38:10  dbg
   41  *      Created.
   42  *      [90/02/08            dbg]
   43  * 
   44  */
   45 
   46 #ifndef _I386_TRAP_H_
   47 #define _I386_TRAP_H_
   48 
   49 /*
   50  * Hardware trap vectors for i386.
   51  */
   52 #define T_DIVIDE_ERROR          0
   53 #define T_DEBUG                 1
   54 #define T_NMI                   2               /* non-maskable interrupt */
   55 #define T_INT3                  3               /* int 3 instruction */
   56 #define T_OVERFLOW              4               /* overflow test */
   57 #define T_OUT_OF_BOUNDS         5               /* bounds check */
   58 #define T_INVALID_OPCODE        6               /* invalid op code */
   59 #define T_NO_FPU                7               /* no floating point */
   60 #define T_DOUBLE_FAULT          8               /* double fault */
   61 #define T_FPU_FAULT             9
   62 /*                              10 */
   63 #define T_SEGMENT_NOT_PRESENT   11
   64 #define T_STACK_FAULT           12
   65 #define T_GENERAL_PROTECTION    13
   66 #define T_PAGE_FAULT            14
   67 /*                              15 */
   68 #define T_FLOATING_POINT_ERROR  16
   69 #define T_WATCHPOINT            17
   70 
   71 /*
   72  * Page-fault trap codes.
   73  */
   74 #define T_PF_PROT               0x1             /* protection violation */
   75 #define T_PF_WRITE              0x2             /* write access */
   76 #define T_PF_USER               0x4             /* from user state */
   77 
   78 #endif  _I386_TRAP_H_

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