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/////////////////////////////////////////////////////////////////////////
// $Id: data_xfer8.cc,v 1.25 2006/05/24 20:57:37 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU_THIS_PTR
void BX_CPU_C::MOV_RLIb(bxInstruction_c *i)
{
BX_READ_8BIT_REGx(i->opcodeReg(),i->extend8bitL()) = i->Ib();
}
void BX_CPU_C::MOV_RHIb(bxInstruction_c *i)
{
BX_CPU_THIS_PTR gen_reg[i->b1() & 0x03].word.byte.rh = i->Ib();
}
void BX_CPU_C::MOV_EEbGb(bxInstruction_c *i)
{
write_virtual_byte(i->seg(), RMAddr(i), &BX_READ_8BIT_REGx(i->nnn(),i->extend8bitL()));
}
void BX_CPU_C::MOV_EGbGb(bxInstruction_c *i)
{
Bit8u op2 = BX_READ_8BIT_REGx(i->nnn(),i->extend8bitL());
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op2);
}
void BX_CPU_C::MOV_GbEEb(bxInstruction_c *i)
{
read_virtual_byte(i->seg(), RMAddr(i), &BX_READ_8BIT_REGx(i->nnn(),i->extend8bitL()));
}
void BX_CPU_C::MOV_GbEGb(bxInstruction_c *i)
{
Bit8u op2 = BX_READ_8BIT_REGx(i->rm(),i->extend8bitL());
BX_WRITE_8BIT_REGx(i->nnn(), i->extend8bitL(), op2);
}
void BX_CPU_C::MOV_ALOb(bxInstruction_c *i)
{
read_virtual_byte(i->seg(), i->Id(), &AL);
}
void BX_CPU_C::MOV_ObAL(bxInstruction_c *i)
{
write_virtual_byte(i->seg(), i->Id(), &AL);
}
void BX_CPU_C::MOV_EbIb(bxInstruction_c *i)
{
Bit8u op2 = i->Ib();
if (i->modC0()) {
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op2);
}
else {
write_virtual_byte(i->seg(), RMAddr(i), &op2);
}
}
void BX_CPU_C::XLAT(bxInstruction_c *i)
{
bx_address offset;
#if BX_SUPPORT_X86_64
if (i->as64L()) {
offset = RBX + AL;
}
else
#endif
if (i->as32L()) {
offset = EBX + AL;
}
else {
offset = BX + AL;
}
read_virtual_byte(i->seg(), offset, &AL);
}
void BX_CPU_C::XCHG_EbGb(bxInstruction_c *i)
{
Bit8u op2, op1;
op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
/* op1 is a register or memory reference */
if (i->modC0()) {
op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op2);
}
else {
/* pointer, segment address pair */
read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
write_RMW_virtual_byte(op2);
}
BX_WRITE_8BIT_REGx(i->nnn(), i->extend8bitL(), op1);
}
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