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89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/*
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* exception.h
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*
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*
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* Copyright (C) 1992, 1993 W. Metzenthen, 22 Parker St, Ormond,
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* Vic 3163, Australia.
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* E-mail apm233m@vaxc.cc.monash.edu.au
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* All rights reserved.
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*
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* This copyright notice covers the redistribution and use of the
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* FPU emulator developed by W. Metzenthen. It covers only its use
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* in the 386BSD operating system. Any other use is not permitted
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* under this copyright.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must include information specifying
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* that source code for the emulator is freely available and include
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* either:
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* a) an offer to provide the source code for a nominal distribution
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* fee, or
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* b) list at least two alternative methods whereby the source
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* can be obtained, e.g. a publically accessible bulletin board
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* and an anonymous ftp site from which the software can be
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* downloaded.
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* 3. All advertising materials specifically mentioning features or use of
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* this emulator must acknowledge that it was developed by W. Metzenthen.
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* 4. The name of W. Metzenthen may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* W. METZENTHEN BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _EXCEPTION_H_
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#define _EXCEPTION_H_
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#ifdef LOCORE
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#define Const_(x) $/**/x
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#else
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#define Const_(x) x
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#endif
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#ifndef SW_C1
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#include "fpu_emu.h"
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#endif /* SW_C1 */
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#define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */
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#define EX_ErrorSummary Const_(0x0080) /* Error summary status */
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/* Special exceptions: */
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#define EX_INTERNAL Const_(0x8000) /* Internal error in wm-FPU-emu */
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#define EX_StackOver Const_(0x0041|SW_C1) /* stack overflow */
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#define EX_StackUnder Const_(0x0041) /* stack underflow */
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/* Exception flags: */
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#define EX_Precision Const_(0x0020) /* loss of precision */
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#define EX_Underflow Const_(0x0010) /* underflow */
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#define EX_Overflow Const_(0x0008) /* overflow */
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#define EX_ZeroDiv Const_(0x0004) /* divide by zero */
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#define EX_Denormal Const_(0x0002) /* denormalized operand */
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#define EX_Invalid Const_(0x0001) /* invalid operation */
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#ifndef LOCORE
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#ifdef DEBUG
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#define EXCEPTION(x) { printf("exception in %s at line %d\n", \
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__FILE__, __LINE__); exception(x); }
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#else
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#define EXCEPTION(x) exception(x)
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#endif
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#endif /* LOCORE */
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#endif /* _EXCEPTION_H_ */
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