The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/x86/include/trap.h

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    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * William Jolitz.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  *      from: @(#)trap.h        5.4 (Berkeley) 5/9/91
   33  * $FreeBSD: releng/10.4/sys/x86/include/trap.h 262042 2014-02-17 12:57:13Z avg $
   34  */
   35 
   36 #ifndef _MACHINE_TRAP_H_
   37 #define _MACHINE_TRAP_H_
   38 
   39 /*
   40  * Trap type values
   41  * also known in trap.c for name strings
   42  */
   43 
   44 #define T_PRIVINFLT     1       /* privileged instruction */
   45 #define T_BPTFLT        3       /* breakpoint instruction */
   46 #define T_ARITHTRAP     6       /* arithmetic trap */
   47 #define T_PROTFLT       9       /* protection fault */
   48 #define T_TRCTRAP       10      /* debug exception (sic) */
   49 #define T_PAGEFLT       12      /* page fault */
   50 #define T_ALIGNFLT      14      /* alignment fault */
   51 
   52 #define T_DIVIDE        18      /* integer divide fault */
   53 #define T_NMI           19      /* non-maskable trap */
   54 #define T_OFLOW         20      /* overflow trap */
   55 #define T_BOUND         21      /* bound instruction fault */
   56 #define T_DNA           22      /* device not available fault */
   57 #define T_DOUBLEFLT     23      /* double fault */
   58 #define T_FPOPFLT       24      /* fp coprocessor operand fetch fault */
   59 #define T_TSSFLT        25      /* invalid tss fault */
   60 #define T_SEGNPFLT      26      /* segment not present fault */
   61 #define T_STKFLT        27      /* stack fault */
   62 #define T_MCHK          28      /* machine check trap */
   63 #define T_XMMFLT        29      /* SIMD floating-point exception */
   64 #define T_RESERVED      30      /* reserved (unknown) */
   65 #define T_DTRACE_RET    32      /* DTrace pid return */
   66 
   67 /* XXX most of the following codes aren't used, but could be. */
   68 
   69 /* definitions for <sys/signal.h> */
   70 #define     ILL_RESAD_FAULT     T_RESADFLT
   71 #define     ILL_PRIVIN_FAULT    T_PRIVINFLT
   72 #define     ILL_RESOP_FAULT     T_RESOPFLT
   73 #define     ILL_ALIGN_FAULT     T_ALIGNFLT
   74 #define     ILL_FPOP_FAULT      T_FPOPFLT       /* coprocessor operand fault */
   75 
   76 /* old FreeBSD macros, deprecated */
   77 #define FPE_INTOVF_TRAP 0x1     /* integer overflow */
   78 #define FPE_INTDIV_TRAP 0x2     /* integer divide by zero */
   79 #define FPE_FLTDIV_TRAP 0x3     /* floating/decimal divide by zero */
   80 #define FPE_FLTOVF_TRAP 0x4     /* floating overflow */
   81 #define FPE_FLTUND_TRAP 0x5     /* floating underflow */
   82 #define FPE_FPU_NP_TRAP 0x6     /* floating point unit not present  */
   83 #define FPE_SUBRNG_TRAP 0x7     /* subrange out of bounds */
   84 
   85 /* codes for SIGBUS */
   86 #define     BUS_PAGE_FAULT      T_PAGEFLT       /* page fault protection base */
   87 #define     BUS_SEGNP_FAULT     T_SEGNPFLT      /* segment not present */
   88 #define     BUS_STK_FAULT       T_STKFLT        /* stack segment */
   89 #define     BUS_SEGM_FAULT      T_RESERVED      /* segment protection base */
   90 
   91 /* Trap's coming from user mode */
   92 #define T_USER  0x100
   93 
   94 #endif /* !_MACHINE_TRAP_H_ */

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