/******************************************************************************                       Realmode X86 Emulator Library**               Copyright (C) 1996-1999 SciTech Software, Inc.*                    Copyright (C) David Mosberger-Tang*                      Copyright (C) 1999 Egbert Eich**  ========================================================================**  Permission to use, copy, modify, distribute, and sell this software and*  its documentation for any purpose is hereby granted without fee,*  provided that the above copyright notice appear in all copies and that*  both that copyright notice and this permission notice appear in*  supporting documentation, and that the name of the authors not be used*  in advertising or publicity pertaining to distribution of the software*  without specific, written prior permission.  The authors makes no*  representations about the suitability of this software for any purpose.*  It is provided "as is" without express or implied warranty.**  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,*  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO*  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR*  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF*  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR*  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR*  PERFORMANCE OF THIS SOFTWARE.**  ========================================================================** Language:     ANSI C* Environment:  Any* Developer:    Kendall Bennett** Description:  Header file for FPU register definitions.*****************************************************************************/#ifndef __X86EMU_FPU_REGS_H#define __X86EMU_FPU_REGS_H#ifdef X86_FPU_SUPPORT#pragma pack(1)/* Basic 8087 register can hold any of the following values: */union x86_fpu_reg_u {    s8                  tenbytes[10];    double              dval;    float               fval;    s16                 sval;    s32                 lval;    };struct x86_fpu_reg {    union x86_fpu_reg_u reg;    char                tag;    };/* * Since we are not going to worry about the problems of aliasing * registers, every time a register is modified, its result type is * set in the tag fields for that register.  If some operation * attempts to access the type in a way inconsistent with its current * storage format, then we flag the operation.  If common, we'll * attempt the conversion. */#define  X86_FPU_VALID          0x80#define  X86_FPU_REGTYP(r)      ((r) & 0x7F)#define  X86_FPU_WORD           0x0#define  X86_FPU_SHORT          0x1#define  X86_FPU_LONG           0x2#define  X86_FPU_FLOAT          0x3#define  X86_FPU_DOUBLE         0x4#define  X86_FPU_LDBL           0x5#define  X86_FPU_BSD            0x6#define  X86_FPU_STKTOP  0struct x86_fpu_registers {    struct x86_fpu_reg  x86_fpu_stack[8];    int                 x86_fpu_flags;    int                 x86_fpu_config;         /* rounding modes, etc. */    short               x86_fpu_tos, x86_fpu_bos;    };#pragma pack()/* * There are two versions of the following macro. * * One version is for opcode D9, for which there are more than 32 * instructions encoded in the second byte of the opcode. * * The other version, deals with all the other 7 i87 opcodes, for * which there are only 32 strings needed to describe the * instructions. */#endif /* X86_FPU_SUPPORT */#ifdef DEBUG# define DECODE_PRINTINSTR32(t,mod,rh,rl)       \    DECODE_PRINTF(t[(mod<<3)+(rh)]);# define DECODE_PRINTINSTR256(t,mod,rh,rl)      \    DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]);#else# define DECODE_PRINTINSTR32(t,mod,rh,rl)# define DECODE_PRINTINSTR256(t,mod,rh,rl)#endif#endif /* __X86EMU_FPU_REGS_H */