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1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
3d0d14f9 IM |
22 | #define FPU_BUSY Const_(0x8000) /* FPU busy bit (8087 compatibility) */ |
23 | #define EX_ErrorSummary Const_(0x0080) /* Error summary status */ | |
1da177e4 LT |
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 | ||
1da177e4 LT |
36 | #define PRECISION_LOST_UP Const_((EX_Precision | SW_C1)) |
37 | #define PRECISION_LOST_DOWN Const_(EX_Precision) | |
38 | ||
1da177e4 LT |
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 | ||
3d0d14f9 | 48 | #endif /* __ASSEMBLY__ */ |
1da177e4 LT |
49 | |
50 | #endif /* _EXCEPTION_H_ */ |