source: branches/libc-0.6/src/emx/include/386/trap.h

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      from: @(#)trap.h        5.4 (Berkeley) 5/9/91
 * $FreeBSD: src/sys/i386/include/trap.h,v 1.13 2001/07/12 06:32:51 peter Exp $
 */

/** @file
 * FreeBSD 5.1
 */

#ifndef _MACHINE_TRAP_H_
#define _MACHINE_TRAP_H_

/*
 * Trap type values
 * also known in trap.c for name strings
 */

#define T_PRIVINFLT     1       /* privileged instruction */
#define T_BPTFLT        3       /* breakpoint instruction */
#define T_ARITHTRAP     6       /* arithmetic trap */
#define T_PROTFLT       9       /* protection fault */
#define T_TRCTRAP       10      /* debug exception (sic) */
#define T_PAGEFLT       12      /* page fault */
#define T_ALIGNFLT      14      /* alignment fault */

#define T_DIVIDE        18      /* integer divide fault */
#define T_NMI           19      /* non-maskable trap */
#define T_OFLOW         20      /* overflow trap */
#define T_BOUND         21      /* bound instruction fault */
#define T_DNA           22      /* device not available fault */
#define T_DOUBLEFLT     23      /* double fault */
#define T_FPOPFLT       24      /* fp coprocessor operand fetch fault */
#define T_TSSFLT        25      /* invalid tss fault */
#define T_SEGNPFLT      26      /* segment not present fault */
#define T_STKFLT        27      /* stack fault */
#define T_MCHK          28      /* machine check trap */
#define T_XMMFLT        29      /* SIMD floating-point exception */
#define T_RESERVED      30      /* reserved (unknown) */

/* XXX most of the following codes aren't used, but could be. */

/* definitions for <sys/signal.h> */
#define     ILL_RESAD_FAULT     T_RESADFLT
#define     ILL_PRIVIN_FAULT    T_PRIVINFLT
#define     ILL_RESOP_FAULT     T_RESOPFLT
#define     ILL_ALIGN_FAULT     T_ALIGNFLT
#define     ILL_FPOP_FAULT      T_FPOPFLT       /* coprocessor operand fault */

/* portable macros for SIGFPE/ARITHTRAP */
#define FPE_INTOVF      1       /* integer overflow */
#define FPE_INTDIV      2       /* integer divide by zero */
#define FPE_FLTDIV      3       /* floating point divide by zero */
#define FPE_FLTOVF      4       /* floating point overflow */
#define FPE_FLTUND      5       /* floating point underflow */
#define FPE_FLTRES      6       /* floating point inexact result */
#define FPE_FLTINV      7       /* invalid floating point operation */
#define FPE_FLTSUB      8       /* subscript out of range */

/* old FreeBSD macros, deprecated */
#define FPE_INTOVF_TRAP 0x1     /* integer overflow */
#define FPE_INTDIV_TRAP 0x2     /* integer divide by zero */
#define FPE_FLTDIV_TRAP 0x3     /* floating/decimal divide by zero */
#define FPE_FLTOVF_TRAP 0x4     /* floating overflow */
#define FPE_FLTUND_TRAP 0x5     /* floating underflow */
#define FPE_FPU_NP_TRAP 0x6     /* floating point unit not present  */
#define FPE_SUBRNG_TRAP 0x7     /* subrange out of bounds */

/* codes for SIGBUS */
#define     BUS_PAGE_FAULT      T_PAGEFLT       /* page fault protection base */
#define     BUS_SEGNP_FAULT     T_SEGNPFLT      /* segment not present */
#define     BUS_STK_FAULT       T_STKFLT        /* stack segment */
#define     BUS_SEGM_FAULT      T_RESERVED      /* segment protection base */

/* Trap's coming from user mode */
#define T_USER  0x100

#endif /* !_MACHINE_TRAP_H_ */