osfmk/i386/trap.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52
  53 #ifndef _I386_TRAP_H_
  54 #define _I386_TRAP_H_
  55
  56 /*
  57  * Hardware trap vectors for i386.
  58  */
  59 #define T_DIVIDE_ERROR          0
  60 #define T_DEBUG                 1
  61 #define T_NMI                   2               /* non-maskable interrupt */
  62 #define T_INT3                  3               /* int 3 instruction */
  63 #define T_OVERFLOW              4               /* overflow test */
  64 #define T_OUT_OF_BOUNDS         5               /* bounds check */
  65 #define T_INVALID_OPCODE        6               /* invalid op code */
  66 #define T_NO_FPU                7               /* no floating point */
  67 #define T_DOUBLE_FAULT          8               /* double fault */
  68 #define T_FPU_FAULT             9
  69 /*                              10 */
  70 #define T_SEGMENT_NOT_PRESENT   11
  71 #define T_STACK_FAULT           12
  72 #define T_GENERAL_PROTECTION    13
  73 #define T_PAGE_FAULT            14
  74 /*                              15 */
  75 #define T_FLOATING_POINT_ERROR  16
  76 #define T_WATCHPOINT            17
  77 #define T_PREEMPT               255
  78
  79 #define TRAP_NAMES "divide error", "debug trap", "NMI", "breakpoint", \
  80                    "overflow", "bounds check", "invalid opcode", \
  81                    "no coprocessor", "double fault", "coprocessor overrun", \
  82                    "invalid TSS", "segment not present", "stack bounds", \
  83                    "general protection", "page fault", "(reserved)", \
  84                    "coprocessor error", "watchpoint"
  85
  86 /*
  87  * Page-fault trap codes.
  88  */
  89 #define T_PF_PROT               0x1             /* protection violation */
  90 #define T_PF_WRITE              0x2             /* write access */
  91 #define T_PF_USER               0x4             /* from user state */
  92
  93 #if !defined(ASSEMBLER) && defined(MACH_KERNEL)
  94
  95 #include <i386/thread.h>
  96
  97 extern void             i386_exception(
  98                                 int             exc,
  99                                 int             code,
 100                                 int             subcode);
 101
 102 extern void             thread_exception_return(void);
 103
 104 extern boolean_t        kernel_trap(
 105                                 struct i386_saved_state *regs);
 106
 107 extern void             panic_trap(
 108                                 struct i386_saved_state *regs);
 109
 110 extern void             user_trap(
 111                                 struct i386_saved_state *regs);
 112
 113 extern void             i386_astintr(int preemption);
 114
 115 #endif  /* !ASSEMBLER && MACH_KERNEL */
 116
 117 #endif  /* _I386_TRAP_H_ */