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