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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__); FPU_exception(x); }
#else
#define EXCEPTION(x) FPU_exception(x)
#endif
#endif /* __ASSEMBLY__ */
#endif /* _EXCEPTION_H_ */
|
