deb4998ba50060c48cce222fd18a8eed053918d7vboxsync/****************************************************************************
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Realmode X86 Emulator Library
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Copyright (C) 1996-1999 SciTech Software, Inc.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Copyright (C) David Mosberger-Tang
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Copyright (C) 1999 Egbert Eich
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* ========================================================================
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Permission to use, copy, modify, distribute, and sell this software and
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* its documentation for any purpose is hereby granted without fee,
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* provided that the above copyright notice appear in all copies and that
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* both that copyright notice and this permission notice appear in
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* supporting documentation, and that the name of the authors not be used
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* in advertising or publicity pertaining to distribution of the software
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* without specific, written prior permission. The authors makes no
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* representations about the suitability of this software for any purpose.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* It is provided "as is" without express or implied warranty.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* PERFORMANCE OF THIS SOFTWARE.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* ========================================================================
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Language: ANSI C
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Environment: Any
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Developer: Kendall Bennett
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync* Description: Header file for FPU register definitions.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync****************************************************************************/
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#ifndef __X86EMU_FPU_REGS_H
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define __X86EMU_FPU_REGS_H
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#ifdef X86_FPU_SUPPORT
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#ifdef PACK
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# pragma PACK
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#endif
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync/* Basic 8087 register can hold any of the following values: */
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsyncunion x86_fpu_reg_u {
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync s8 tenbytes[10];
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync double dval;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync float fval;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync s16 sval;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync s32 lval;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync };
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsyncstruct x86_fpu_reg {
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync union x86_fpu_reg_u reg;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync char tag;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync };
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync/*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * Since we are not going to worry about the problems of aliasing
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * registers, every time a register is modified, its result type is
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * set in the tag fields for that register. If some operation
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * attempts to access the type in a way inconsistent with its current
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * storage format, then we flag the operation. If common, we'll
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * attempt the conversion.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync */
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_VALID 0x80
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_REGTYP(r) ((r) & 0x7F)
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_WORD 0x0
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_SHORT 0x1
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_LONG 0x2
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_FLOAT 0x3
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_DOUBLE 0x4
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_LDBL 0x5
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_BSD 0x6
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#define X86_FPU_STKTOP 0
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsyncstruct x86_fpu_registers {
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync struct x86_fpu_reg x86_fpu_stack[8];
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync int x86_fpu_flags;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync int x86_fpu_config; /* rounding modes, etc. */
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync short x86_fpu_tos, x86_fpu_bos;
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync };
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#ifdef END_PACK
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# pragma END_PACK
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#endif
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync/*
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * There are two versions of the following macro.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync *
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * One version is for opcode D9, for which there are more than 32
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * instructions encoded in the second byte of the opcode.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync *
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * The other version, deals with all the other 7 i87 opcodes, for
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * which there are only 32 strings needed to describe the
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync * instructions.
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync */
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#endif /* X86_FPU_SUPPORT */
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#ifdef DEBUG
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# define DECODE_PRINTINSTR32(t,mod,rh,rl) \
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync DECODE_PRINTF(t[(mod<<3)+(rh)]);
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# define DECODE_PRINTINSTR256(t,mod,rh,rl) \
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]);
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#else
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# define DECODE_PRINTINSTR32(t,mod,rh,rl)
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync# define DECODE_PRINTINSTR256(t,mod,rh,rl)
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#endif
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync
deb4998ba50060c48cce222fd18a8eed053918d7vboxsync#endif /* __X86EMU_FPU_REGS_H */