root / lab4 / .minix-src / include / x86 / trap.h @ 14
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| 1 | 13 | up20180614 | /* $NetBSD: trap.h,v 1.2 2003/08/07 16:30:33 agc Exp $ */
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| 2 | |||
| 3 | /*-
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| 4 | * Copyright (c) 1990 The Regents of the University of California.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to Berkeley by
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| 8 | * William Jolitz.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | * 3. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | *
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| 34 | * @(#)trap.h 5.4 (Berkeley) 5/9/91
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| 35 | */
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| 36 | |||
| 37 | /*
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| 38 | * Trap type values
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| 39 | * also known in trap.c for name strings
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| 40 | */
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| 41 | |||
| 42 | #define T_PRIVINFLT 0 /* privileged instruction */ |
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| 43 | #define T_BPTFLT 1 /* breakpoint trap */ |
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| 44 | #define T_ARITHTRAP 2 /* arithmetic trap */ |
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| 45 | #define T_ASTFLT 3 /* asynchronous system trap */ |
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| 46 | #define T_PROTFLT 4 /* protection fault */ |
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| 47 | #define T_TRCTRAP 5 /* trace trap */ |
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| 48 | #define T_PAGEFLT 6 /* page fault */ |
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| 49 | #define T_ALIGNFLT 7 /* alignment fault */ |
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| 50 | #define T_DIVIDE 8 /* integer divide fault */ |
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| 51 | #define T_NMI 9 /* non-maskable interrupt */ |
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| 52 | #define T_OFLOW 10 /* overflow trap */ |
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| 53 | #define T_BOUND 11 /* bounds check fault */ |
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| 54 | #define T_DNA 12 /* device not available fault */ |
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| 55 | #define T_DOUBLEFLT 13 /* double fault */ |
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| 56 | #define T_FPOPFLT 14 /* fp coprocessor operand fetch fault */ |
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| 57 | #define T_TSSFLT 15 /* invalid tss fault */ |
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| 58 | #define T_SEGNPFLT 16 /* segment not present fault */ |
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| 59 | #define T_STKFLT 17 /* stack fault */ |
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| 60 | #define T_MCA 18 /* machine check */ |
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| 61 | #define T_XMM 19 /* SSE FP exception */ |
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| 62 | #define T_RESERVED 20 /* reserved fault base */ |
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| 63 | |||
| 64 | /* Trap's coming from user mode */
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| 65 | #define T_USER 0x100 |
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| 66 | |||
| 67 | /* Flags kludged into the trap code */
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| 68 | |||
| 69 | #define TC_TSS 0x80000000 |
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| 70 | #define TC_FLAGMASK (TC_TSS) |