1 files changed, 65 insertions, 0 deletions

diff --git a/arch/i386/math-emu/status_w.h b/arch/i386/math-emu/status_w.h
new file mode 100644
index 000000000000..78d7b7689dd6
--- /dev/null
+++ b/arch/i386/math-emu/status_w.h
@@ -0,0 +1,65 @@
+/*---------------------------------------------------------------------------+
+ |  status_w.h                                                               |
+ |                                                                           |
+ | Copyright (C) 1992,1993                                                   |
+ |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
+ |                       Australia.  E-mail   billm@vaxc.cc.monash.edu.au    |
+ |                                                                           |
+ +---------------------------------------------------------------------------*/
+
+#ifndef _STATUS_H_
+#define _STATUS_H_
+
+#include "fpu_emu.h"    /* for definition of PECULIAR_486 */
+
+#ifdef __ASSEMBLY__
+#define Const__(x)      $##x
+#else
+#define Const__(x)      x
+#endif
+
+#define SW_Backward     Const__(0x8000) /* backward compatibility */
+#define SW_C3           Const__(0x4000) /* condition bit 3 */
+#define SW_Top          Const__(0x3800) /* top of stack */
+#define SW_Top_Shift    Const__(11)     /* shift for top of stack bits */
+#define SW_C2           Const__(0x0400) /* condition bit 2 */
+#define SW_C1           Const__(0x0200) /* condition bit 1 */
+#define SW_C0           Const__(0x0100) /* condition bit 0 */
+#define SW_Summary      Const__(0x0080) /* exception summary */
+#define SW_Stack_Fault  Const__(0x0040) /* stack fault */
+#define SW_Precision    Const__(0x0020) /* loss of precision */
+#define SW_Underflow    Const__(0x0010) /* underflow */
+#define SW_Overflow     Const__(0x0008) /* overflow */
+#define SW_Zero_Div     Const__(0x0004) /* divide by zero */
+#define SW_Denorm_Op    Const__(0x0002) /* denormalized operand */
+#define SW_Invalid      Const__(0x0001) /* invalid operation */
+
+#define SW_Exc_Mask     Const__(0x27f)  /* Status word exception bit mask */
+
+#ifndef __ASSEMBLY__
+
+#define COMP_A_gt_B     1
+#define COMP_A_eq_B     2
+#define COMP_A_lt_B     3
+#define COMP_No_Comp    4
+#define COMP_Denormal   0x20
+#define COMP_NaN        0x40
+#define COMP_SNaN       0x80
+
+#define status_word() \
+  ((partial_status & ~SW_Top & 0xffff) | ((top << SW_Top_Shift) & SW_Top))
+#define setcc(cc) ({ \
+  partial_status &= ~(SW_C0|SW_C1|SW_C2|SW_C3); \
+  partial_status |= (cc) & (SW_C0|SW_C1|SW_C2|SW_C3); })
+
+#ifdef PECULIAR_486
+   /* Default, this conveys no information, but an 80486 does it. */
+   /* Clear the SW_C1 bit, "other bits undefined". */
+#  define clear_C1()  { partial_status &= ~SW_C1; }
+# else
+#  define clear_C1()
+#endif /* PECULIAR_486 */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _STATUS_H_ */