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some FPU added :)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@81
This commit is contained in:
Felix Jakschitsch 2002-07-28 14:51:12 +00:00
parent 42e5d0b779
commit 5f69f14962
8 changed files with 359 additions and 27 deletions
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1
include/dosbox.h
View file

@ -25,6 +25,7 @@ typedef unsigned short Bit16u;
typedef signed short Bit16s;
typedef unsigned long Bit32u;
typedef signed long Bit32s;
typedef double Real64;
#if defined(_MSC_VER)
typedef unsigned __int64 Bit64u;
typedef signed __int64 Bit64s;

66
include/fpu.h
View file

@ -1 +1,67 @@
/*
* Copyright (C) 2002 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __FPU_H
#define __FPU_H
#include <dosbox.h>
#include <regs.h>
#include <mem.h>
enum { FPUREG_VALID=0, FPUREG_ZERO, FPUREG_PNAN, FPUREG_NNAN, FPUREG_EMPTY };
enum {
t_FLD=0, t_FLDST, t_FDIV,
t_FDIVP, t_FCHS, t_FCOMP,
t_FUNKNOWN,
t_FNOTDONE,
};
bool FPU_get_C3();
bool FPU_get_C2();
bool FPU_get_C1();
bool FPU_get_C0();
bool FPU_get_IR();
bool FPU_get_SF();
bool FPU_get_PF();
bool FPU_get_UF();
bool FPU_get_OF();
bool FPU_get_ZF();
bool FPU_get_DF();
bool FPU_get_IN();
void FPU_ESC0_Normal(Bitu rm);
void FPU_ESC0_EA(Bitu func,PhysPt ea);
void FPU_ESC1_Normal(Bitu rm);
void FPU_ESC1_EA(Bitu func,PhysPt ea);
void FPU_ESC2_Normal(Bitu rm);
void FPU_ESC2_EA(Bitu func,PhysPt ea);
void FPU_ESC3_Normal(Bitu rm);
void FPU_ESC3_EA(Bitu func,PhysPt ea);
void FPU_ESC4_Normal(Bitu rm);
void FPU_ESC4_EA(Bitu func,PhysPt ea);
void FPU_ESC5_Normal(Bitu rm);
void FPU_ESC5_EA(Bitu func,PhysPt ea);
void FPU_ESC6_Normal(Bitu rm);
void FPU_ESC6_EA(Bitu func,PhysPt ea);
void FPU_ESC7_Normal(Bitu rm);
void FPU_ESC7_EA(Bitu func,PhysPt ea);
#endif

25
include/regs.h
View file

@ -35,6 +35,23 @@ struct Flag_Info {
bool oldcf;
};
struct FPU_Flag_Info {
struct {
Real64 r;
Bit8u tag;
} var1,var2, result;
struct {
bool bf,c3,c2,c1,c0,ir,sf,pf,uf,of,zf,df,in;
Bit8s tos;
} sw;
struct {
bool ic,ie,sf,pf,uf,of,zf,df,in;
Bit8u rc,pc;
} cw;
Bitu type;
Bitu prev_type;
};
struct Segment {
@ -51,6 +68,7 @@ enum { cs=0,ds,es,fs,gs,ss};
extern Segment Segs[6];
extern Flag_Info flags;
extern FPU_Flag_Info fpu_flags;
//extern Regs regs;
void SetSegment_16(Bit32u seg,Bit16u val);
@ -66,6 +84,13 @@ struct CPU_Regs {
} ax,bx,cx,dx,si,di,sp,bp,ip;
};
struct FPU_Regs {
struct {
Real64 r;
Bit8u tag;
} st[8];
};
extern CPU_Regs cpu_regs;
#define reg_al cpu_regs.ax.b.l