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/*---------------------------------------------------------------------------+

 |  exception.h                                                              |

 |                                                                           |

 | Copyright (C) 1992    W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |

 |                       Australia.  E-mail   billm@vaxc.cc.monash.edu.au    |

 |                                                                           |

 +---------------------------------------------------------------------------*/

#ifndef _EXCEPTION_H_

#define _EXCEPTION_H_

#ifdef __ASSEMBLY__

#define Const_(x)       $##x

#else

#define Const_(x)       x

#endif

#ifndef SW_C1

#include "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 */

#define PRECISION_LOST_UP    Const_((EX_Precision | SW_C1))

#define PRECISION_LOST_DOWN  Const_(EX_Precision)

#ifndef __ASSEMBLY__

#ifdef DEBUG

#define EXCEPTION(x)    { printk("exception in %s at line %d\n", \

        __FILE__, __LINE__); exception(x); }

#else

#define EXCEPTION(x)    exception(x)

#endif

#endif __ASSEMBLY__

#endif _EXCEPTION_H_