Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[linux-2.6] / arch / x86 / math-emu / exception.h
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_ */