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