447 lines
9.5 KiB
C++
447 lines
9.5 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: logical16.cc,v 1.5 2001-10-03 13:10:37 bdenney Exp $
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/////////////////////////////////////////////////////////////////////////
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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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#define NEED_CPU_REG_SHORTCUTS 1
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#include "bochs.h"
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#define LOG_THIS BX_CPU_THIS_PTR
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void
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BX_CPU_C::XOR_EwGw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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/* op2_16 is a register, op2_addr is an index of a register */
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op2_16 = BX_READ_16BIT_REG(i->nnn);
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 ^ op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_XOR16);
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}
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void
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BX_CPU_C::XOR_GwEw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, result_16;
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op1_16 = BX_READ_16BIT_REG(i->nnn);
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/* op2_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op2_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_virtual_word(i->seg, i->rm_addr, &op2_16);
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}
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result_16 = op1_16 ^ op2_16;
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/* now write result back to destination */
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BX_WRITE_16BIT_REG(i->nnn, result_16);
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_XOR16);
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}
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void
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BX_CPU_C::XOR_AXIw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, sum_16;
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op1_16 = AX;
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op2_16 = i->Iw;
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sum_16 = op1_16 ^ op2_16;
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/* now write sum back to destination */
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AX = sum_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, sum_16, BX_INSTR_XOR16);
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}
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void
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BX_CPU_C::XOR_EwIw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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op2_16 = i->Iw;
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 ^ op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_XOR16);
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}
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void
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BX_CPU_C::OR_EwIw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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op2_16 = i->Iw;
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 | op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_OR16);
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}
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void
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BX_CPU_C::NOT_Ew(BxInstruction_t *i)
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{
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Bit16u op1_16, result_16;
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/* op1 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = ~op1_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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}
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void
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BX_CPU_C::OR_EwGw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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/* op2_16 is a register, op2_addr is an index of a register */
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op2_16 = BX_READ_16BIT_REG(i->nnn);
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 | op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_OR16);
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}
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void
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BX_CPU_C::OR_GwEw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, result_16;
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op1_16 = BX_READ_16BIT_REG(i->nnn);
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/* op2_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op2_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_virtual_word(i->seg, i->rm_addr, &op2_16);
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}
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result_16 = op1_16 | op2_16;
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/* now write result back to destination */
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BX_WRITE_16BIT_REG(i->nnn, result_16);
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_OR16);
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}
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void
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BX_CPU_C::OR_AXIw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, sum_16;
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op1_16 = AX;
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op2_16 = i->Iw;
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sum_16 = op1_16 | op2_16;
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/* now write sum back to destination */
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AX = sum_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, sum_16, BX_INSTR_OR16);
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}
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void
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BX_CPU_C::AND_EwGw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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/* op2_16 is a register, op2_addr is an index of a register */
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op2_16 = BX_READ_16BIT_REG(i->nnn);
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 & op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_AND16);
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}
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void
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BX_CPU_C::AND_GwEw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, result_16;
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op1_16 = BX_READ_16BIT_REG(i->nnn);
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/* op2_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op2_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_virtual_word(i->seg, i->rm_addr, &op2_16);
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}
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result_16 = op1_16 & op2_16;
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/* now write result back to destination */
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BX_WRITE_16BIT_REG(i->nnn, result_16);
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_AND16);
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}
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void
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BX_CPU_C::AND_AXIw(BxInstruction_t *i)
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{
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Bit16u op1_16, op2_16, sum_16;
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op1_16 = AX;
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op2_16 = i->Iw;
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sum_16 = op1_16 & op2_16;
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/* now write sum back to destination */
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AX = sum_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, sum_16, BX_INSTR_AND16);
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}
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void
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BX_CPU_C::AND_EwIw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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op2_16 = i->Iw;
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_RMW_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 & op2_16;
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/* now write result back to destination */
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if (i->mod == 0xc0) {
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BX_WRITE_16BIT_REG(i->rm, result_16);
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}
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else {
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write_RMW_virtual_word(result_16);
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}
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_AND16);
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}
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void
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BX_CPU_C::TEST_EwGw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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/* op2_16 is a register, op2_addr is an index of a register */
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op2_16 = BX_READ_16BIT_REG(i->nnn);
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 & op2_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_TEST16);
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}
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void
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BX_CPU_C::TEST_AXIw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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op1_16 = AX;
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/* op2_16 is imm16 */
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op2_16 = i->Iw;
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result_16 = op1_16 & op2_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_TEST16);
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}
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void
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BX_CPU_C::TEST_EwIw(BxInstruction_t *i)
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{
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Bit16u op2_16, op1_16, result_16;
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/* op2_16 is imm16 */
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op2_16 = i->Iw;
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/* op1_16 is a register or memory reference */
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if (i->mod == 0xc0) {
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op1_16 = BX_READ_16BIT_REG(i->rm);
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}
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else {
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/* pointer, segment address pair */
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read_virtual_word(i->seg, i->rm_addr, &op1_16);
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}
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result_16 = op1_16 & op2_16;
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SET_FLAGS_OSZAPC_16(op1_16, op2_16, result_16, BX_INSTR_TEST16);
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}
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