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