1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2da957e11SThomas Gleixner /*---------------------------------------------------------------------------+ 3da957e11SThomas Gleixner | exception.h | 4da957e11SThomas Gleixner | | 5da957e11SThomas Gleixner | Copyright (C) 1992 W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | 6da957e11SThomas Gleixner | Australia. E-mail billm@vaxc.cc.monash.edu.au | 7da957e11SThomas Gleixner | | 8da957e11SThomas Gleixner +---------------------------------------------------------------------------*/ 9da957e11SThomas Gleixner 10da957e11SThomas Gleixner #ifndef _EXCEPTION_H_ 11da957e11SThomas Gleixner #define _EXCEPTION_H_ 12da957e11SThomas Gleixner 13da957e11SThomas Gleixner #ifdef __ASSEMBLY__ 14da957e11SThomas Gleixner #define Const_(x) $##x 15da957e11SThomas Gleixner #else 16da957e11SThomas Gleixner #define Const_(x) x 17da957e11SThomas Gleixner #endif 18da957e11SThomas Gleixner 19da957e11SThomas Gleixner #ifndef SW_C1 20da957e11SThomas Gleixner #include "fpu_emu.h" 21da957e11SThomas Gleixner #endif /* SW_C1 */ 22da957e11SThomas Gleixner 23da957e11SThomas Gleixner #define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */ 24da957e11SThomas Gleixner #define EX_ErrorSummary Const_(0x0080) /* Error summary status */ 25da957e11SThomas Gleixner /* Special exceptions: */ 26da957e11SThomas Gleixner #define EX_INTERNAL Const_(0x8000) /* Internal error in wm-FPU-emu */ 27da957e11SThomas Gleixner #define EX_StackOver Const_(0x0041|SW_C1) /* stack overflow */ 28da957e11SThomas Gleixner #define EX_StackUnder Const_(0x0041) /* stack underflow */ 29da957e11SThomas Gleixner /* Exception flags: */ 30da957e11SThomas Gleixner #define EX_Precision Const_(0x0020) /* loss of precision */ 31da957e11SThomas Gleixner #define EX_Underflow Const_(0x0010) /* underflow */ 32da957e11SThomas Gleixner #define EX_Overflow Const_(0x0008) /* overflow */ 33da957e11SThomas Gleixner #define EX_ZeroDiv Const_(0x0004) /* divide by zero */ 34da957e11SThomas Gleixner #define EX_Denormal Const_(0x0002) /* denormalized operand */ 35da957e11SThomas Gleixner #define EX_Invalid Const_(0x0001) /* invalid operation */ 36da957e11SThomas Gleixner 37da957e11SThomas Gleixner #define PRECISION_LOST_UP Const_((EX_Precision | SW_C1)) 38da957e11SThomas Gleixner #define PRECISION_LOST_DOWN Const_(EX_Precision) 39da957e11SThomas Gleixner 40da957e11SThomas Gleixner #ifndef __ASSEMBLY__ 41da957e11SThomas Gleixner 42da957e11SThomas Gleixner #ifdef DEBUG 43da957e11SThomas Gleixner #define EXCEPTION(x) { printk("exception in %s at line %d\n", \ 44da957e11SThomas Gleixner __FILE__, __LINE__); FPU_exception(x); } 45da957e11SThomas Gleixner #else 46da957e11SThomas Gleixner #define EXCEPTION(x) FPU_exception(x) 47da957e11SThomas Gleixner #endif 48da957e11SThomas Gleixner 49da957e11SThomas Gleixner #endif /* __ASSEMBLY__ */ 50da957e11SThomas Gleixner 51da957e11SThomas Gleixner #endif /* _EXCEPTION_H_ */ 52