osfmk/i386/trap.h

   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 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_TRAP_H_
  57 #define _I386_TRAP_H_
  58
  59 /*
  60  * Hardware trap vectors for i386.
  61  */
  62 #define T_DIVIDE_ERROR          0
  63 #define T_DEBUG                 1
  64 #define T_NMI                   2               /* non-maskable interrupt */
  65 #define T_INT3                  3               /* int 3 instruction */
  66 #define T_OVERFLOW              4               /* overflow test */
  67 #define T_OUT_OF_BOUNDS         5               /* bounds check */
  68 #define T_INVALID_OPCODE        6               /* invalid op code */
  69 #define T_NO_FPU                7               /* no floating point */
  70 #define T_DOUBLE_FAULT          8               /* double fault */
  71 #define T_FPU_FAULT             9
  72 /*                              10 */
  73 #define T_SEGMENT_NOT_PRESENT   11
  74 #define T_STACK_FAULT           12
  75 #define T_GENERAL_PROTECTION    13
  76 #define T_PAGE_FAULT            14
  77 /*                              15 */
  78 #define T_FLOATING_POINT_ERROR  16
  79 #define T_WATCHPOINT            17
  80 #define T_PREEMPT               255
  81
  82 #define TRAP_NAMES "divide error", "debug trap", "NMI", "breakpoint", \
  83                    "overflow", "bounds check", "invalid opcode", \
  84                    "no coprocessor", "double fault", "coprocessor overrun", \
  85                    "invalid TSS", "segment not present", "stack bounds", \
  86                    "general protection", "page fault", "(reserved)", \
  87                    "coprocessor error", "watchpoint"
  88
  89 /*
  90  * Page-fault trap codes.
  91  */
  92 #define T_PF_PROT               0x1             /* protection violation */
  93 #define T_PF_WRITE              0x2             /* write access */
  94 #define T_PF_USER               0x4             /* from user state */
  95
  96 #if !defined(ASSEMBLER) && defined(MACH_KERNEL)
  97
  98 #include <i386/thread.h>
  99
 100 extern void             i386_exception(
 101                                 int             exc,
 102                                 int             code,
 103                                 int             subcode);
 104
 105 extern void             thread_exception_return(void);
 106
 107 extern boolean_t        kernel_trap(
 108                                 struct i386_saved_state *regs);
 109
 110 extern void             panic_trap(
 111                                 struct i386_saved_state *regs);
 112
 113 extern void             user_trap(
 114                                 struct i386_saved_state *regs);
 115
 116 extern void             i386_astintr(int preemption);
 117
 118 #endif  /* !ASSEMBLER && MACH_KERNEL */
 119
 120 #endif  /* _I386_TRAP_H_ */