Bochs/bochs/cpu/logical8.cc

/////////////////////////////////////////////////////////////////////////
// $Id: logical8.cc,v 1.33 2007-11-17 18:08:46 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::XOR_EbGbM(bxInstruction_c *i)
{
  Bit8u op1, op2;

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 ^= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::XOR_EbGbR(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 ^= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::XOR_GbEb(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());

  if (i->modC0()) {
    op2 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  }
  else {
    read_virtual_byte(i->seg(), RMAddr(i), &op2);
  }

  op1 ^= op2;

  BX_WRITE_8BIT_REGx(i->nnn(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::XOR_ALIb(bxInstruction_c *i)
{
  Bit8u op1;

  op1 = AL;
  op1 ^= i->Ib();
  AL = op1;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::XOR_EbIbM(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op1 ^= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::XOR_EbIbR(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op1 ^= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::OR_EbIbM(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op1 |= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::OR_EbIbR(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op1 |= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::NOT_EbM(bxInstruction_c *i)
{
  Bit8u op1_8;

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1_8);
  op1_8 = ~op1_8;
  write_RMW_virtual_byte(op1_8);
}

void BX_CPU_C::NOT_EbR(bxInstruction_c *i)
{
  Bit8u op1_8 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op1_8 = ~op1_8;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1_8);
}

void BX_CPU_C::OR_EbGbM(bxInstruction_c *i)
{
  Bit8u op1, op2;

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 |= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::OR_EbGbR(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 |= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::OR_GbEb(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());

  if (i->modC0()) {
    op2 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  }
  else {
    read_virtual_byte(i->seg(), RMAddr(i), &op2);
  }

  op1 |= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);

  BX_WRITE_8BIT_REGx(i->nnn(), i->extend8bitL(), op1);
}

void BX_CPU_C::OR_ALIb(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = AL;
  op2 = i->Ib();
  op1 |= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);

  AL = op1;
}

void BX_CPU_C::AND_EbGbM(bxInstruction_c *i)
{
  Bit8u op1, op2;

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 &= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::AND_EbGbR(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 &= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::AND_GbEb(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());

  if (i->modC0()) {
    op2 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  }
  else {
    read_virtual_byte(i->seg(), RMAddr(i), &op2);
  }

  op1 &= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);

  BX_WRITE_8BIT_REGx(i->nnn(), i->extend8bitL(), op1);
}

void BX_CPU_C::AND_ALIb(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = AL;
  op2 = i->Ib();
  op1 &= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);

  AL = op1;
}

void BX_CPU_C::AND_EbIbM(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  read_RMW_virtual_byte(i->seg(), RMAddr(i), &op1);
  op1 &= op2;
  write_RMW_virtual_byte(op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::AND_EbIbR(bxInstruction_c *i)
{
  Bit8u op1, op2 = i->Ib();

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op1 &= op2;
  BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), op1);

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::TEST_EbGbM(bxInstruction_c *i)
{
  Bit8u op1, op2;

  read_virtual_byte(i->seg(), RMAddr(i), &op1);
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 &= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::TEST_EbGbR(bxInstruction_c *i)
{
  Bit8u op1, op2;

  op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op2 = BX_READ_8BIT_REGx(i->nnn(), i->extend8bitL());
  op1 &= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::TEST_ALIb(bxInstruction_c *i)
{
  Bit8u op1 = AL;
  Bit8u op2 = i->Ib();
  op1 &= op2;

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::TEST_EbIbM(bxInstruction_c *i)
{
  Bit8u op1;

  read_virtual_byte(i->seg(), RMAddr(i), &op1);
  op1 &= i->Ib();

  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}

void BX_CPU_C::TEST_EbIbR(bxInstruction_c *i)
{
  Bit8u op1 = BX_READ_8BIT_REGx(i->rm(), i->extend8bitL());
  op1 &= i->Ib();
  SET_FLAGS_OSZAPC_RESULT_8(op1, BX_INSTR_LOGIC8);
}