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operation.cpp
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//
// operation.cpp
// Assembly Interpreter
//
// Created by Ata İnan on 17.03.2020.
// Copyright © 2020 Ata İnan. All rights reserved.
//
#include <iostream>
#include <algorithm>
#include "operation.hpp"
#include "variables.hpp"
#include "instruction.hpp"
namespace operation {
bool defineVar(string& line, int& lineNum, int& address, bool& isEnd) {
// If "code ends" line is already read before, no definitions can be made
if (isEnd) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
string varName;
string::iterator it;
// Clear whitespaces at the end of the line
while (!line.empty() && line.back() == ' ')
line.pop_back();
// Clear white spaces at the beginning of the line
int space = 0;
while (line.size() != space && line.at(space) == ' ')
space++;
line = line.substr(space);
// Get the variable name
space = line.find(' ');
if (space == line.npos) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
varName = line.substr(0, space);
// Turn it to lowercase
for (it = varName.begin(); it != varName.end(); it++)
*it = tolower(*it);
// If that variable is already defined or it does not starts with a letter
if (!isalpha(varName.front()) || types.find(varName) != types.end()) {
cout << "Error at line " << lineNum << endl;
return false;
}
// Process rest of the line
string varRest = line.substr(space + 1);
// If the "code ends" line is encountered
if (!isEnd && !varName.compare("code")) {
string copy = varRest;
for (it = copy.begin(); it != copy.end(); it++)
*it = tolower(*it);
if (!copy.compare("ends")) {
isEnd = true;
return true;
}
}
// Clear unnecessary whitespaces
space = 0;
while (varRest.size() != space && varRest.at(space) == ' ')
space++;
varRest = varRest.substr(space);
space = varRest.find(' ');
// There should be a space because variable value is separate
if (space == varRest.npos) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
// "db" or "dw" definition
string typeDefine = varRest.substr(0, space);
for (it = typeDefine.begin(); it != typeDefine.end(); it++)
*it = tolower(*it);
if (typeDefine.size() != 2 || typeDefine.front() != 'd') {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
// Get the type "b" or "w"
char type = typeDefine.back();
// Get the value of the variable
string varValue = varRest.substr(space + 1);
// Clear the unnecessary whitespaces
space = 0;
while (varValue.size() != space && varValue.at(space) == ' ')
space++;
varValue = varValue.substr(space);
// Used when the variable is defined with a character, e.g. 'a'
unsigned char value;
// Used when the variable is defined with a number, e.g. 1234h
int tempValue;
// If definition is made with a character
if (varValue.front() == '\'' && varValue.back() == '\'' && varValue.size() == 3) {
// Get the value and record the type, address and value of the variable
value = varValue[1];
addresses[varName] = address;
memory[address] = value;
if (type == 'b') {
types[varName] = 'b';
address++;
} else if (type == 'w') {
types[varName] = 'w';
memory[address + 1] = 0;
address += 2;
} else {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
} else {
// String can be lowercased if the value is a number
for (it = varValue.begin(); it != varValue.end(); it++)
*it = tolower(*it);
// Get the value if it is given in hex
tempValue = hexToDec(varValue);
if (tempValue == INT32_MAX)
// Get the value if it is given in decimal
tempValue = decToDec(varValue);
if (tempValue == INT32_MAX) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
// Record the type, address and value of the variable
addresses[varName] = address;
if (type == 'b') {
if (tempValue >= (1 << 8)) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
types[varName] = 'b';
memory[address] = (unsigned char) tempValue;
address++;
} else if (type == 'w') {
if (tempValue >= (1 << 16)) {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
types[varName] = 'w';
int rem = tempValue % (1 << 8);
int div = tempValue / (1 << 8);
memory[address] = (unsigned char) rem;
memory[address + 1] = (unsigned char) div;
address += 2;
} else {
cout << "Syntax error at line " << lineNum << endl;
return false;
}
}
return true;
}
int decToDec(string dec) {
if (dec.empty())
return INT32_MAX;
// Pop 'd' to calculate the integer value
if (dec.back() == 'd')
dec.pop_back();
// If the given string just contains a char
if (dec.front() == '\'' && dec.back() == '\'' && dec.size() == 3)
return dec.at(1);
int result = 0, base = 1;
string::reverse_iterator it;
// Calculate each digit
for (it = dec.rbegin(); it != dec.rend(); it++, base *= 10) {
if (*it == '0')
result += base * 0;
else if (*it == '1')
result += base * 1;
else if (*it == '2')
result += base * 2;
else if (*it == '3')
result += base * 3;
else if (*it == '4')
result += base * 4;
else if (*it == '5')
result += base * 5;
else if (*it == '6')
result += base * 6;
else if (*it == '7')
result += base * 7;
else if (*it == '8')
result += base * 8;
else if (*it == '9')
result += base * 9;
else
return INT32_MAX;
}
return result;
}
int hexToDec(string hex) {
// Hex numbers must include 'h' at the end or '0' at the beginning
if (hex.empty())
return INT32_MAX;
if (hex.back() != 'h' && hex.front() != '0')
return INT32_MAX;
if (hex.back() == 'h')
hex.pop_back();
int result = 0, base = 1;
string::reverse_iterator it;
char first = hex.front();
// Most significant char of a hex must be a digit
if (first >= 'a' && first <= 'f')
return INT32_MAX;
// Calculate each digit
for (it = hex.rbegin(); it != hex.rend(); it++, base *= 16) {
if (*it == '0')
result += base * 0;
else if (*it == '1')
result += base * 1;
else if (*it == '2')
result += base * 2;
else if (*it == '3')
result += base * 3;
else if (*it == '4')
result += base * 4;
else if (*it == '5')
result += base * 5;
else if (*it == '6')
result += base * 6;
else if (*it == '7')
result += base * 7;
else if (*it == '8')
result += base * 8;
else if (*it == '9')
result += base * 9;
else if (*it == 'a')
result += base * 10;
else if (*it == 'b')
result += base * 11;
else if (*it == 'c')
result += base * 12;
else if (*it == 'd')
result += base * 13;
else if (*it == 'e')
result += base * 14;
else if (*it == 'f')
result += base * 15;
else
return INT32_MAX;
}
return result;
}
bool isReg16(string& operand) {
// Search for operand in the *reg16* set
return !(reg16.find(operand) == reg16.end());
}
bool isReg8(string& operand) {
// Search for operand in the *reg8* set
return !(reg8.find(operand) == reg8.end());
}
void updateReg16(string reg) {
if (!reg.compare("ax")) {
ah = ax / (1 << 8);
al = ax % (1 << 8);
} else if (!reg.compare("bx")) {
bh = bx / (1 << 8);
bl = bx % (1 << 8);
} else if (!reg.compare("cx")) {
ch = cx / (1 << 8);
cl = cx % (1 << 8);
} else if (!reg.compare("dx")) {
dh = dx / (1 << 8);
dl = dx % (1 << 8);
}
}
void updateReg8(string reg) {
if (reg.front() == 'a')
ax = al + (1 << 8) * ah;
else if (reg.front() == 'b')
bx = bl + (1 << 8) * bh;
else if (reg.front() == 'c')
cx = cl + (1 << 8) * ch;
else if (reg.front() == 'd')
dx = dl + (1 << 8) * dh;
}
pair<int, char> getAddress(string& operand) {
if (operand.empty())
return make_pair(0, '!');
int address;
char type = operand.front();
// If the operand is just a variable name, find its type and address in maps and return
unordered_map<string, char>::iterator it = types.find(operand);
if (it != types.end()) {
type = types.at(operand);
address = addresses.at(operand);
return make_pair(address, type);
}
string addressStr;
int space;
/* If the operand is like [1234h] or [bx], type is given as 'o' meaning it is determined
by the other operand */
if (operand.front() == '[' && operand.back() == ']') {
if (operand.size() == 2)
return make_pair(0, '!');
addressStr = operand.substr(1, operand.size() - 2);
space = 0;
// Clear unnecessary whitespaces
while (space != addressStr.size() && addressStr.at(space) == ' ')
space++;
addressStr = addressStr.substr(space);
while (!addressStr.empty() && addressStr.back() == ' ')
addressStr.pop_back();
if (isReg16(addressStr)) {
address = *reg16Values.at(addressStr);
return make_pair(address, 'o');
} else if (isReg8(addressStr)) {
address = *reg8Values.at(addressStr);
return make_pair(address, 'o');
} else {
address = hexToDec(addressStr);
if (address == INT32_MAX)
address = decToDec(addressStr);
if (address == INT32_MAX)
return make_pair(0, '!');
return make_pair(address, 'o');
}
}
// If the operand starts with type like w[1234h], b[bx], w var
if (type != 'w' && type != 'b')
return make_pair (0, '!');
space = operand.find(' ');
// If the operand is like w var, byte var
if (space != operand.npos) {
string typer = operand.substr(0, space);
if (!typer.compare("w") || !typer.compare("word") || !typer.compare("b") || !typer.compare("byte")) {
string varName = operand.substr(space);
space = 0;
while (space != varName.size() && varName.at(space) == ' ')
space++;
varName = varName.substr(space);
it = types.find(varName);
if (it != types.end()) {
address = addresses.at(varName);
return make_pair(address, type);
}
}
}
// If the operand is like w[1234h], b[bx]
space = 1;
while (space != operand.size() && operand.at(space) == ' ')
space++;
addressStr = operand.substr(space);
if (addressStr.front() != '[' || addressStr.back() != ']')
return make_pair(0, '!');
addressStr = addressStr.substr(1, addressStr.size() - 2);
space = 0;
while (space != addressStr.size() && addressStr.at(space) == ' ')
space++;
addressStr = addressStr.substr(space);
while (!addressStr.empty() && addressStr.back() == ' ')
addressStr.pop_back();
if (isReg16(addressStr)) {
address = *reg16Values.at(addressStr);
return make_pair(address, type);
} else if (isReg8(addressStr)) {
address = *reg8Values.at(addressStr);
return make_pair(address, type);
} else {
address = hexToDec(addressStr);
if (address == INT32_MAX)
address = decToDec(addressStr);
if (address == INT32_MAX)
return make_pair(0, '!');
return make_pair(address, type);
}
}
bool process(vector<string>& tokens, int lineNum) {
// Get the instructions and operands
string ins = tokens[0];
string operand1 = tokens[1];
string operand2 = tokens[2];
// If the current line makes a jump, then new label is kept here
nextLabel = "";
// Keeps the return value of the instruction functions
bool isValid = false;
// If there is an empty line, just pass it
if (ins.empty() && operand1.empty() && operand2.empty())
return true;
// Determine the type of operand1 and operand2
pair<int, char> pair1 = getAddress(operand1);
int address1 = pair1.first;
char type1 = pair1.second;
pair<int, char> pair2 = getAddress(operand2);
int address2 = pair2.first;
char type2 = pair2.second;
int num1 = hexToDec(operand1);
if (num1 == INT32_MAX)
num1 = decToDec(operand1);
if (num1 == INT32_MAX) {
int space = operand1.find(' ');
string isOffset = operand1.substr(0, space);
if (space != operand1.npos && !isOffset.compare("offset")) {
string varName = operand1.substr(space + 1);
space = 0;
while (space != varName.size() && varName.at(space) == ' ')
space++;
varName = varName.substr(space);
try {
num1 = addresses.at(varName);
} catch (exception &e) {
num1 = INT32_MAX;
}
}
}
int num2 = hexToDec(operand2);
if (num2 == INT32_MAX)
num2 = decToDec(operand2);
if (num2 == INT32_MAX) {
int space = operand2.find(' ');
string isOffset = operand2.substr(0, space);
if (space != operand2.npos && !isOffset.compare("offset")) {
string varName = operand2.substr(space + 1);
space = 0;
while (space != varName.size() && varName.at(space) == ' ')
space++;
varName = varName.substr(space);
try {
num2 = addresses.at(varName);
} catch (exception& e) {
num2 = INT32_MAX;
}
}
}
// mov instruction
if (!ins.compare("mov")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::mov_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::mov_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::mov_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::mov_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::mov_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::mov_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::mov_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::mov_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::mov_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::mov_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::mov_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::mov_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::mov_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// add instruction
} else if (!ins.compare("add")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::add_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::add_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::add_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::add_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::add_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::add_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::add_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::add_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::add_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::add_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::add_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::add_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::add_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// sub instruction
} else if (!ins.compare("sub")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::sub_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::sub_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::sub_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::sub_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::sub_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::sub_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::sub_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::sub_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::sub_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::sub_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::sub_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::sub_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::sub_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// mul instruction
} else if (!ins.compare("mul")) {
if (!operand2.empty()) {
cout << "Error at line " << lineNum << endl;
return false;
}
if (isReg16(operand1)) {
isValid = instruction::mul_reg16(*reg16Values.at(operand1));
updateReg16("dx");
updateReg16("ax");
} else if (isReg8(operand1)) {
isValid = instruction::mul_reg8(*reg8Values.at(operand1));
updateReg16("ax");
} else if (type1 == 'w') {
isValid = instruction::mul_wadd(address1);
updateReg16("dx");
updateReg16("ax");
} else if (type1 == 'b') {
isValid = instruction::mul_badd(address1);
updateReg16("ax");
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// div instruction
} else if (!ins.compare("div")) {
if (!operand2.empty()) {
cout << "Error at line " << lineNum << endl;
return false;
}
if (isReg16(operand1)) {
isValid = instruction::div_reg16(*reg16Values.at(operand1));
updateReg16("dx");
updateReg16("ax");
} else if (isReg8(operand1)) {
isValid = instruction::div_reg8(*reg8Values.at(operand1));
updateReg8("al");
updateReg8("ah");
} else if (type1 == 'w') {
isValid = instruction::div_wadd(address1);
updateReg16("dx");
updateReg16("ax");
} else if (type1 == 'b') {
isValid = instruction::div_badd(address1);
updateReg8("al");
updateReg8("ah");
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// xor instruction
} else if (!ins.compare("xor")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::xor_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::xor_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::xor_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::xor_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::xor_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::xor_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::xor_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::xor_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::xor_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::xor_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::xor_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::xor_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::xor_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// or instruction
} else if (!ins.compare("or")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::or_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::or_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::or_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::or_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::or_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::or_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::or_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::or_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::or_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::or_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::or_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::or_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::or_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// and instruction
} else if (!ins.compare("and")) {
if (isReg16(operand1)) {
if (isReg16(operand2))
isValid = instruction::and_reg16_reg16(*reg16Values.at(operand1), *reg16Values.at(operand2));
else if (type2 == 'w' || type2 == 'o')
isValid = instruction::and_reg16_wadd(*reg16Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::and_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (isReg8(operand2))
isValid = instruction::and_reg8_reg8(*reg8Values.at(operand1), *reg8Values.at(operand2));
else if (type2 == 'b' || type2 == 'o')
isValid = instruction::and_reg8_badd(*reg8Values.at(operand1), address2);
else if (num2 != INT32_MAX)
isValid = instruction::and_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (isReg16(operand2))
isValid = instruction::and_wadd_reg16(address1, *reg16Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::and_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (isReg8(operand2))
isValid = instruction::and_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX)
isValid = instruction::and_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'o') {
if (isReg16(operand2))
isValid = instruction::and_wadd_reg16(address1, *reg16Values.at(operand2));
else if (isReg8(operand2))
isValid = instruction::and_badd_reg8(address1, *reg8Values.at(operand2));
else if (num2 != INT32_MAX && num2 >= (1 << 8))
isValid = instruction::and_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// not instruction
} else if (!ins.compare("not")) {
if (!operand2.empty()) {
cout << "Error at line " << lineNum << endl;
return false;
}
if (isReg16(operand1)) {
isValid = instruction::not_reg16(*reg16Values.at(operand1));
updateReg16(operand1);
} else if (isReg8(operand1)) {
isValid = instruction::not_reg8(*reg8Values.at(operand1));
updateReg8(operand1);
} else if (type1 == 'w') {
isValid = instruction::not_wadd(address1);
} else if (type1 == 'b') {
isValid = instruction::not_badd(address1);
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// rcl instruction
} else if (!ins.compare("rcl")) {
if (isReg16(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::rcl_reg16_cl(*reg16Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcl_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::rcl_reg8_cl(*reg8Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcl_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (!operand2.compare("cl"))
isValid = instruction::rcl_wadd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcl_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (!operand2.compare("cl"))
isValid = instruction::rcl_badd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcl_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// rcr instruction
} else if (!ins.compare("rcr")) {
if (isReg16(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::rcr_reg16_cl(*reg16Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcr_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::rcr_reg8_cl(*reg8Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcr_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (!operand2.compare("cl"))
isValid = instruction::rcr_wadd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcr_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (!operand2.compare("cl"))
isValid = instruction::rcr_badd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::rcr_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// shl instruction
} else if (!ins.compare("shl")) {
if (isReg16(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::shl_reg16_cl(*reg16Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::shl_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::shl_reg8_cl(*reg8Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::shl_reg8_num(*reg8Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg8(operand1);
} else if (type1 == 'w') {
if (!operand2.compare("cl"))
isValid = instruction::shl_wadd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::shl_wadd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else if (type1 == 'b') {
if (!operand2.compare("cl"))
isValid = instruction::shl_badd_cl(address1, cl);
else if (num2 != INT32_MAX)
isValid = instruction::shl_badd_num(address1, num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
} else {
cout << "Error at line " << lineNum << endl;
return false;
}
// shr instruction
} else if (!ins.compare("shr")) {
if (isReg16(operand1)) {
if (!operand2.compare("cl"))
isValid = instruction::shr_reg16_cl(*reg16Values.at(operand1), cl);
else if (num2 != INT32_MAX)
isValid = instruction::shr_reg16_num(*reg16Values.at(operand1), num2);
else {
cout << "Error at line " << lineNum << endl;
return false;
}
updateReg16(operand1);
} else if (isReg8(operand1)) {