1/* SPDX-License-Identifier: GPL-2.0 */ 2/*---------------------------------------------------------------------------+ 3 | exception.h | 4 | | 5 | Copyright (C) 1992 W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | 6 | Australia. E-mail billm@vaxc.cc.monash.edu.au | 7 | | 8 +---------------------------------------------------------------------------*/ 9 10#ifndef _EXCEPTION_H_ 11#define _EXCEPTION_H_ 12 13#ifdef __ASSEMBLY__ 14#define Const_(x) $##x 15#else 16#define Const_(x) x 17#endif 18 19#ifndef SW_C1 20#include "fpu_emu.h" 21#endif /* SW_C1 */ 22 23#define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */ 24#define EX_ErrorSummary Const_(0x0080) /* Error summary status */ 25/* Special exceptions: */ 26#define EX_INTERNAL Const_(0x8000) /* Internal error in wm-FPU-emu */ 27#define EX_StackOver Const_(0x0041|SW_C1) /* stack overflow */ 28#define EX_StackUnder Const_(0x0041) /* stack underflow */ 29/* Exception flags: */ 30#define EX_Precision Const_(0x0020) /* loss of precision */ 31#define EX_Underflow Const_(0x0010) /* underflow */ 32#define EX_Overflow Const_(0x0008) /* overflow */ 33#define EX_ZeroDiv Const_(0x0004) /* divide by zero */ 34#define EX_Denormal Const_(0x0002) /* denormalized operand */ 35#define EX_Invalid Const_(0x0001) /* invalid operation */ 36 37#define PRECISION_LOST_UP Const_((EX_Precision | SW_C1)) 38#define PRECISION_LOST_DOWN Const_(EX_Precision) 39 40#ifndef __ASSEMBLY__ 41 42#ifdef DEBUG 43#define EXCEPTION(x) { printk("exception in %s at line %d\n", \ 44 __FILE__, __LINE__); FPU_exception(x); } 45#else 46#define EXCEPTION(x) FPU_exception(x) 47#endif 48 49#endif /* __ASSEMBLY__ */ 50 51#endif /* _EXCEPTION_H_ */ 52