106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/*
|
|
* exception.h
|
|
*
|
|
*
|
|
* Copyright (C) 1992,1993,1994
|
|
* W. Metzenthen, 22 Parker St, Ormond, Vic 3163,
|
|
* Australia. E-mail billm@vaxc.cc.monash.edu.au
|
|
* All rights reserved.
|
|
*
|
|
* This copyright notice covers the redistribution and use of the
|
|
* FPU emulator developed by W. Metzenthen. It covers only its use
|
|
* in the 386BSD, FreeBSD and NetBSD operating systems. Any other
|
|
* use is not permitted under this copyright.
|
|
*
|
|
* 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 include information specifying
|
|
* that source code for the emulator is freely available and include
|
|
* either:
|
|
* a) an offer to provide the source code for a nominal distribution
|
|
* fee, or
|
|
* b) list at least two alternative methods whereby the source
|
|
* can be obtained, e.g. a publically accessible bulletin board
|
|
* and an anonymous ftp site from which the software can be
|
|
* downloaded.
|
|
* 3. All advertising materials specifically mentioning features or use of
|
|
* this emulator must acknowledge that it was developed by W. Metzenthen.
|
|
* 4. The name of W. Metzenthen may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``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
|
|
* W. METZENTHEN 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.
|
|
*
|
|
*
|
|
* The purpose of this copyright, based upon the Berkeley copyright, is to
|
|
* ensure that the covered software remains freely available to everyone.
|
|
*
|
|
* The software (with necessary differences) is also available, but under
|
|
* the terms of the GNU copyleft, for the Linux operating system and for
|
|
* the djgpp ms-dos extender.
|
|
*
|
|
* W. Metzenthen June 1994.
|
|
*
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef _EXCEPTION_H_
|
|
#define _EXCEPTION_H_
|
|
|
|
|
|
#ifdef LOCORE
|
|
#define Const_(x) $/**/x
|
|
#else
|
|
#define Const_(x) x
|
|
#endif
|
|
|
|
#ifndef SW_C1
|
|
#include <gnu/i386/fpemul/fpu_emu.h>
|
|
#endif /* SW_C1 */
|
|
|
|
#define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */
|
|
#define EX_ErrorSummary Const_(0x0080) /* Error summary status */
|
|
/* Special exceptions: */
|
|
#define EX_INTERNAL Const_(0x8000) /* Internal error in wm-FPU-emu */
|
|
#define EX_StackOver Const_(0x0041|SW_C1) /* stack overflow */
|
|
#define EX_StackUnder Const_(0x0041) /* stack underflow */
|
|
/* Exception flags: */
|
|
#define EX_Precision Const_(0x0020) /* loss of precision */
|
|
#define EX_Underflow Const_(0x0010) /* underflow */
|
|
#define EX_Overflow Const_(0x0008) /* overflow */
|
|
#define EX_ZeroDiv Const_(0x0004) /* divide by zero */
|
|
#define EX_Denormal Const_(0x0002) /* denormalized operand */
|
|
#define EX_Invalid Const_(0x0001) /* invalid operation */
|
|
|
|
|
|
#ifndef LOCORE
|
|
|
|
#ifdef DEBUG
|
|
#define EXCEPTION(x) \
|
|
do { \
|
|
printf("exception in %s at line %d\n", __FILE__, __LINE__); \
|
|
exception(x); \
|
|
} while (0)
|
|
#else
|
|
#define EXCEPTION(x) exception(x)
|
|
#endif
|
|
|
|
#endif /* LOCORE */
|
|
|
|
#endif /* _EXCEPTION_H_ */
|