Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / x86 / math-emu / exception.h

diff --git a/kernel/arch/x86/math-emu/exception.h b/kernel/arch/x86/math-emu/exception.h
new file mode 100644 (file)
index 0000000..67f43a4
--- /dev/null
+++ b/kernel/arch/x86/math-emu/exception.h
@@ -0,0 +1,50 @@
+/*---------------------------------------------------------------------------+
+ |  exception.h                                                              |
+ |                                                                           |
+ | Copyright (C) 1992    W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
+ |                       Australia.  E-mail   billm@vaxc.cc.monash.edu.au    |
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+
+#ifndef _EXCEPTION_H_
+#define _EXCEPTION_H_
+
+#ifdef __ASSEMBLY__
+#define        Const_(x)       $##x
+#else
+#define        Const_(x)       x
+#endif
+
+#ifndef SW_C1
+#include "fpu_emu.h"
+#endif /* SW_C1 */
+
+#define FPU_BUSY        Const_(0x8000) /* FPU busy bit (8087 compatibility) */
+#define EX_ErrorSummary Const_(0x0080) /* Error summary status */
+/* Special exceptions: */
+#define        EX_INTERNAL     Const_(0x8000)  /* Internal error in wm-FPU-emu */
+#define EX_StackOver   Const_(0x0041|SW_C1)    /* stack overflow */
+#define EX_StackUnder  Const_(0x0041)  /* stack underflow */
+/* Exception flags: */
+#define EX_Precision   Const_(0x0020)  /* loss of precision */
+#define EX_Underflow   Const_(0x0010)  /* underflow */
+#define EX_Overflow    Const_(0x0008)  /* overflow */
+#define EX_ZeroDiv     Const_(0x0004)  /* divide by zero */
+#define EX_Denormal    Const_(0x0002)  /* denormalized operand */
+#define EX_Invalid     Const_(0x0001)  /* invalid operation */
+
+#define PRECISION_LOST_UP    Const_((EX_Precision | SW_C1))
+#define PRECISION_LOST_DOWN  Const_(EX_Precision)
+
+#ifndef __ASSEMBLY__
+
+#ifdef DEBUG
+#define        EXCEPTION(x)    { printk("exception in %s at line %d\n", \
+       __FILE__, __LINE__); FPU_exception(x); }
+#else
+#define        EXCEPTION(x)    FPU_exception(x)
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _EXCEPTION_H_ */