sys/i386/gnu/fpemul/math_emu.h

   1 /*
   2  *
   3  * $FreeBSD: src/sys/gnu/i386/fpemul/math_emu.h,v 1.5 1999/08/28 00:42:52 peter Exp $
   4  *
   5  */
   6
   7 #ifndef _MATH_EMU_H
   8 #define _MATH_EMU_H
   9
  10 struct fpu_reg {
  11         char    sign;
  12         char    tag;
  13         long    exp;
  14         u_long  sigl;
  15         u_long  sigh;
  16 };
  17
  18 union i387_union {
  19         struct i387_hard_struct {
  20                 long    cwd;
  21                 long    swd;
  22                 long    twd;
  23                 long    fip;
  24                 long    fcs;
  25                 long    foo;
  26                 long    fos;
  27                 long    st_space[20];   /* 8*10 bytes for each FP-reg = 80
  28                                          * bytes */
  29         }       hard;
  30         struct i387_soft_struct {
  31                 long    cwd;
  32                 long    swd;
  33                 long    twd;
  34                 long    fip;
  35                 long    fcs;
  36                 long    foo;
  37                 long    fos;
  38                 long    top;
  39                 struct fpu_reg regs[8]; /* 8*16 bytes for each FP-reg = 128
  40                                          * bytes */
  41                 unsigned char lookahead;
  42                 struct trapframe *frame;
  43                 unsigned long entry_eip;
  44                 int     orig_eip;
  45         }       soft;
  46 };
  47 #endif