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

     /*
      * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
      *
      * @APPLE_LICENSE_HEADER_START@
      * 
      * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
      * 
      * This file contains Original Code and/or Modifications of Original Code
      * as defined in and that are subject to the Apple Public Source License
     * Version 2.0 (the 'License'). You may not use this file except in
     * compliance with the License. Please obtain a copy of the License at
     * http://www.opensource.apple.com/apsl/ and read it before using this
     * file.
     * 
     * The Original Code and all software distributed under the License are
     * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
     * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
     * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
     * Please see the License for the specific language governing rights and
     * limitations under the License.
     * 
     * @APPLE_LICENSE_HEADER_END@
     */
    /*
     * @OSF_COPYRIGHT@
     */
    /* 
     * Mach Operating System
     * Copyright (c) 1991,1990 Carnegie Mellon University
     * All Rights Reserved.
     * 
     * Permission to use, copy, modify and distribute this software and its
     * documentation is hereby granted, provided that both the copyright
     * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     */
    
    #ifndef _I386_TRAP_H_
    #define _I386_TRAP_H_
    
    /*
     * Hardware trap vectors for i386.
     */
    #define T_DIVIDE_ERROR          0
    #define T_DEBUG                 1
    #define T_NMI                   2               /* non-maskable interrupt */
    #define T_INT3                  3               /* int 3 instruction */
    #define T_OVERFLOW              4               /* overflow test */
    #define T_OUT_OF_BOUNDS         5               /* bounds check */
    #define T_INVALID_OPCODE        6               /* invalid op code */
    #define T_NO_FPU                7               /* no floating point */
    #define T_DOUBLE_FAULT          8               /* double fault */
    #define T_FPU_FAULT             9
    /*                              10 */
    #define T_SEGMENT_NOT_PRESENT   11
    #define T_STACK_FAULT           12
    #define T_GENERAL_PROTECTION    13
    #define T_PAGE_FAULT            14
    /*                              15 */
    #define T_FLOATING_POINT_ERROR  16
    #define T_WATCHPOINT            17
    #define T_PREEMPT               255
    
    #define TRAP_NAMES "divide error", "debug trap", "NMI", "breakpoint", \
                       "overflow", "bounds check", "invalid opcode", \
                       "no coprocessor", "double fault", "coprocessor overrun", \
                       "invalid TSS", "segment not present", "stack bounds", \
                       "general protection", "page fault", "(reserved)", \
                       "coprocessor error", "watchpoint"
    
    /*
     * Page-fault trap codes.
     */
    #define T_PF_PROT               0x1             /* protection violation */
    #define T_PF_WRITE              0x2             /* write access */
    #define T_PF_USER               0x4             /* from user state */
    
    #if !defined(ASSEMBLER) && defined(MACH_KERNEL)
    
    #include <i386/thread.h>
    
   extern void             i386_exception(
                                   int             exc,
                                   int             code,
                                   int             subcode);
   
   extern void             thread_exception_return(void);
   
   extern boolean_t        kernel_trap(
                                   struct i386_saved_state *regs);
   
   extern void             panic_trap(
                                   struct i386_saved_state *regs);
   
   extern void             user_trap(
                                   struct i386_saved_state *regs);
   
   extern void             i386_astintr(int preemption);
   
   #endif  /* !ASSEMBLER && MACH_KERNEL */
   
   #endif  /* _I386_TRAP_H_ */

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