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  * $DragonFly: src/sys/i386/gnu/fpemul/Attic/math_emu.h,v 1.2 2003/06/17 04:28:34 dillon Exp $
   5  *
   6  */
   7
   8 #ifndef _MATH_EMU_H
   9 #define _MATH_EMU_H
  10
  11 struct fpu_reg {
  12         char    sign;
  13         char    tag;
  14         long    exp;
  15         u_long  sigl;
  16         u_long  sigh;
  17 };
  18
  19 union i387_union {
  20         struct i387_hard_struct {
  21                 long    cwd;
  22                 long    swd;
  23                 long    twd;
  24                 long    fip;
  25                 long    fcs;
  26                 long    foo;
  27                 long    fos;
  28                 long    st_space[20];   /* 8*10 bytes for each FP-reg = 80
  29                                          * bytes */
  30         }       hard;
  31         struct i387_soft_struct {
  32                 long    cwd;
  33                 long    swd;
  34                 long    twd;
  35                 long    fip;
  36                 long    fcs;
  37                 long    foo;
  38                 long    fos;
  39                 long    top;
  40                 struct fpu_reg regs[8]; /* 8*16 bytes for each FP-reg = 128
  41                                          * bytes */
  42                 unsigned char lookahead;
  43                 struct trapframe *frame;
  44                 unsigned long entry_eip;
  45                 int     orig_eip;
  46         }       soft;
  47 };
  48 #endif