161 lines
4.0 KiB
C++
161 lines
4.0 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: fpu.cc,v 1.1 2003-04-22 20:21:32 sshwarts Exp $
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/////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; 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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#include "bochs.h"
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#define LOG_THIS genlog->
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// Nomenclature used to signify argument types
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//
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// Es = single real
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// El = double real
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// Ea = 14/28 bytes 98/108b bytes (FRSTOR,FSAVE)???
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// Ew = word integer (2 bytes)
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// Ed = dword integer (4 bytes) (short int)
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// Et = extended real
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// Eb = packed BCD
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// Eq = quadword integer (8 bytes) (long integer)
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void BX_CPU_C::ESC0(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC0 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC1(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC1 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC2(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC2 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC3(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC3 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC4(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC4 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC5(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC5 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC6(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC6 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::ESC7(bxInstruction_c *i)
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{
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if ( BX_CPU_THIS_PTR cr0.em || BX_CPU_THIS_PTR cr0.ts ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FPU: ESC7 not implemented, use --enable-fpu"));
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#endif
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}
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void BX_CPU_C::FWAIT(bxInstruction_c *i)
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{
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#if BX_CPU_LEVEL < 3
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// WAIT doesn't generate single steps on 8086.
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// The same goes for prefix instructions, and instructions which
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// modify segment registers. (pg4-16)
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BX_PANIC(("WAIT: not implemented for < 386"));
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#else // BX_CPU_LEVEL >= 3
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if ( BX_CPU_THIS_PTR cr0.ts && BX_CPU_THIS_PTR cr0.mp ) {
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exception(BX_NM_EXCEPTION, 0, 0);
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}
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#if BX_SUPPORT_FPU
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fpu_execute(i);
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#else
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BX_INFO(("FWAIT: requred FPU, use --enable-fpu"));
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#endif
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#endif
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}
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