osfmk/i386/trap.h

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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   6  * This file contains Original Code and/or Modifications of Original Code
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   8  * Version 2.0 (the 'License'). You may not use this file except in
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  11  * unlawful or unlicensed copies of an Apple operating system, or to
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  13  * terms of an Apple operating system software license agreement.
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  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
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  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58
  59 #ifndef _I386_TRAP_H_
  60 #define _I386_TRAP_H_
  61
  62 /*
  63  * Hardware trap vectors for i386.
  64  */
  65 #define T_DIVIDE_ERROR          0
  66 #define T_DEBUG                 1
  67 #define T_NMI                   2               /* non-maskable interrupt */
  68 #define T_INT3                  3               /* int 3 instruction */
  69 #define T_OVERFLOW              4               /* overflow test */
  70 #define T_OUT_OF_BOUNDS         5               /* bounds check */
  71 #define T_INVALID_OPCODE        6               /* invalid op code */
  72 #define T_NO_FPU                7               /* no floating point */
  73 #define T_DOUBLE_FAULT          8               /* double fault */
  74 #define T_FPU_FAULT             9
  75 #define T_INVALID_TSS           10
  76 #define T_SEGMENT_NOT_PRESENT   11
  77 #define T_STACK_FAULT           12
  78 #define T_GENERAL_PROTECTION    13
  79 #define T_PAGE_FAULT            14
  80 /*                              15 */
  81 #define T_FLOATING_POINT_ERROR  16
  82 #define T_WATCHPOINT            17
  83 #define T_MACHINE_CHECK         18
  84 #define T_SSE_FLOAT_ERROR       19
  85 /*                          20-126 */
  86 #define T_DTRACE_RET            127
  87 #define T_PREEMPT               255
  88
  89 #define TRAP_NAMES "divide error", "debug trap", "NMI", "breakpoint", \
  90                    "overflow", "bounds check", "invalid opcode", \
  91                    "no coprocessor", "double fault", "coprocessor overrun", \
  92                    "invalid TSS", "segment not present", "stack bounds", \
  93                    "general protection", "page fault", "(reserved)", \
  94                    "coprocessor error", "watchpoint", "machine check", "SSE floating point"
  95
  96 /*
  97  * Page-fault trap codes.
  98  */
  99 #define T_PF_PROT               0x1             /* protection violation */
 100 #define T_PF_WRITE              0x2             /* write access */
 101 #define T_PF_USER               0x4             /* from user state */
 102
 103 #ifdef PAE
 104 #define T_PF_RSVD               0x8             /* reserved bit set to 1 */
 105 #define T_PF_EXECUTE            0x10            /* instruction fetch when NX */
 106 #endif
 107
 108
 109 #if !defined(ASSEMBLER) && defined(MACH_KERNEL)
 110
 111 #include <i386/thread.h>
 112
 113 extern void             i386_exception(
 114                                 int                     exc,
 115                                 mach_exception_code_t   code,
 116                                 mach_exception_subcode_t subcode);
 117
 118 extern void             sync_iss_to_iks(x86_saved_state32_t *regs);
 119
 120 extern void             sync_iss_to_iks_unconditionally(
 121                                 x86_saved_state_t       *regs);
 122
 123 extern void             kernel_trap(x86_saved_state_t *regs);
 124
 125 extern void             user_trap(x86_saved_state_t *regs);
 126
 127 extern void             panic_double_fault(int code);
 128
 129 extern void             panic_double_fault64(x86_saved_state_t *regs);
 130
 131 extern void             panic_machine_check(int code);
 132
 133 extern void             panic_machine_check64(x86_saved_state_t *regs);
 134
 135 extern void             i386_astintr(int preemption);
 136
 137
 138 typedef kern_return_t (*perfCallback)(
 139                                 int                     trapno,
 140                                 void                    *regs,
 141                                 int                     unused1,
 142                                 int                     unused2);
 143
 144 extern perfCallback perfTrapHook;
 145 extern perfCallback perfASTHook;
 146 extern perfCallback perfIntHook;
 147
 148 extern void             panic_i386_backtrace(void *, int);
 149 #if MACH_KDP
 150 extern boolean_t        kdp_i386_trap(
 151                                 unsigned int,
 152                                 x86_saved_state32_t *,
 153                                 kern_return_t,
 154                                 vm_offset_t);
 155 #endif /* MACH_KDP */
 156 #endif  /* !ASSEMBLER && MACH_KERNEL */
 157
 158 #endif  /* _I386_TRAP_H_ */