165 lines
3.4 KiB
C++
165 lines
3.4 KiB
C++
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "dosbox.h"
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#if C_FPU
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#include <math.h>
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#include <float.h>
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#include "mem.h"
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#include "fpu.h"
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typedef PhysPt EAPoint;
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#define LoadMb(off) mem_readb(off)
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#define LoadMw(off) mem_readw(off)
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#define LoadMd(off) mem_readd(off)
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#define SaveMb(off,val) mem_writeb(off,val)
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#define SaveMw(off,val) mem_writew(off,val)
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#define SaveMd(off,val) mem_writed(off,val)
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#include "fpu_types.h"
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struct {
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FPU_Reg regs[8];
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FPU_Tag tags[8];
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Bitu cw;
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FPU_Round round;
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Bitu ex_mask;
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Bitu sw;
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Bitu top;
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} fpu;
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INLINE void FPU_SetCW(Bitu word) {
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fpu.cw = word;
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fpu.round = (FPU_Round)((word >> 8) & 3);
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fpu.ex_mask = word & 0x3f;
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}
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#include "fpu_instructions.h"
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void FPU_ESC0_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC0_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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LOG(LOG_FPU,LOG_WARN)("ESC 0:Unhandled group %d subfunction %d",group,sub);
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}
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void FPU_ESC1_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC1_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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LOG(LOG_FPU,LOG_WARN)("ESC 1:Unhandled group %d subfunction %d",group,sub);
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}
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void FPU_ESC2_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC2_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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LOG(LOG_FPU,LOG_WARN)("ESC 2:Unhandled group %d subfunction %d",group,sub);
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}
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void FPU_ESC3_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC3_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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switch (group) {
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case 0x04:
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switch (sub) {
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case 0x00: //FNENI
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case 0x01: //FNDIS
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LOG(LOG_FPU,LOG_ERROR)("8087 only fpu code used esc 3: group 4: subfuntion :%d",sub);
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break;
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case 0x02: //FNCLEX FCLEX
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FPU_FCLEX();
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break;
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case 0x03: //FNINIT FINIT
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FPU_FINIT();
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break;
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case 0x04: //FNSETPM
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case 0x05: //FRSTPM
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LOG(LOG_FPU,LOG_ERROR)("80267 protected mode (un)set. Nothing done");
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FPU_FNOP();
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break;
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default:
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E_Exit("ESC 3:ILLEGAL OPCODE group %d subfunction %d",group,sub);
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}
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break;
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default:
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LOG(LOG_FPU,LOG_WARN)("ESC 3:Unhandled group %d subfunction %d",group,sub);
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break;
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}
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return;
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}
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void FPU_ESC4_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC4_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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LOG(LOG_FPU,LOG_WARN)("ESC 4:Unhandled group %d subfunction %d",group,sub);
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}
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void FPU_ESC5_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC5_Normal(Bitu rm) {
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Bitu group=(rm >> 3) & 7;
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Bitu sub=(rm & 7);
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LOG(LOG_FPU,LOG_WARN)("ESC 5:Unhandled group %d subfunction %d",group,sub);
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}
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void FPU_ESC6_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC6_Normal(Bitu rm) {
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}
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void FPU_ESC7_EA(Bitu rm,PhysPt addr) {
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}
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void FPU_ESC7_Normal(Bitu rm) {
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}
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void FPU_Init(void) {
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FPU_FINIT();
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}
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#endif
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