1/*---------------------------------------------------------------------------+ 2 | exception.h | 3 | | 4 | Copyright (C) 1992 W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | 5 | Australia. E-mail billm@vaxc.cc.monash.edu.au | 6 | | 7 +---------------------------------------------------------------------------*/ 8 9#ifndef _EXCEPTION_H_ 10#define _EXCEPTION_H_ 11 12#ifdef __ASSEMBLY__ 13#define Const_(x) $##x 14#else 15#define Const_(x) x 16#endif 17 18#ifndef SW_C1 19#include "fpu_emu.h" 20#endif /* SW_C1 */ 21 22#define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */ 23#define EX_ErrorSummary Const_(0x0080) /* Error summary status */ 24/* Special exceptions: */ 25#define EX_INTERNAL Const_(0x8000) /* Internal error in wm-FPU-emu */ 26#define EX_StackOver Const_(0x0041|SW_C1) /* stack overflow */ 27#define EX_StackUnder Const_(0x0041) /* stack underflow */ 28/* Exception flags: */ 29#define EX_Precision Const_(0x0020) /* loss of precision */ 30#define EX_Underflow Const_(0x0010) /* underflow */ 31#define EX_Overflow Const_(0x0008) /* overflow */ 32#define EX_ZeroDiv Const_(0x0004) /* divide by zero */ 33#define EX_Denormal Const_(0x0002) /* denormalized operand */ 34#define EX_Invalid Const_(0x0001) /* invalid operation */ 35 36#define PRECISION_LOST_UP Const_((EX_Precision | SW_C1)) 37#define PRECISION_LOST_DOWN Const_(EX_Precision) 38 39#ifndef __ASSEMBLY__ 40 41#ifdef DEBUG 42#define EXCEPTION(x) { printk("exception in %s at line %d\n", \ 43 __FILE__, __LINE__); FPU_exception(x); } 44#else 45#define EXCEPTION(x) FPU_exception(x) 46#endif 47 48#endif /* __ASSEMBLY__ */ 49 50#endif /* _EXCEPTION_H_ */ 51