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main_1.c
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main_1.c
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#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
typedef enum { MOV, CMP, ADD, SUB, NOT, CLR, LEA, INC, DEC, JMP, BNE, RED, PRN, JSR, RTS, STOP, DATA, STRING, MAT, ENTRY, EXTERN }func;
int isInstruction(char * order, int flagMessage);
void FirstCheckingCommand(char ** command);
void insertToDT(char **data, int type);
void SecondCheckingCommand(char ** command);
char ** isValidMatrix(char * mat);
void updateInstruction(char **data, int Instruc_type);
typedef struct
{
void * order;
unsigned int type_order : 2;
}Instruction;
typedef struct
{
unsigned int type_coding : 2;
unsigned int dest_addressing : 2;
unsigned int origin_addressing : 2;
unsigned int opcode : 4;
}InstructOrder;
typedef struct
{
char value;
unsigned int type_coding : 2;
}InstructData;
typedef struct
{
unsigned int reg1 : 4;
unsigned int reg2 : 4;
}InstructRegisters;
typedef struct
{
char * label_name;
unsigned int dec_value : 8;
func type; /*boolean variable: data order or instruction order*/
}Symbol;
Symbol ** symbol_table; /*The symbols table*/
Instruction ** instructions_table; /* for data and instruction order*/
char ** ErrorsAssembler; /*Error in the compiling*/
int * data_table; /*Int dynamic array to store all the data instructions*/
int * symbolType_to_entry; /*table that save all the indexes of the entrys labels*/
unsigned SymbolEntry; /*Data table counter*/
unsigned IC; /*Instruction table counter*/
unsigned Total_IC; /*total of Instructions after the first iteration*/
unsigned DC; /*Data table counter*/
unsigned SC; /*Symbol counter*/
unsigned EC; /*Error counter*/
unsigned LC; /*Line counter*/
FILE * fp; /*FILE pointer to the given assembly file*/
void allocate_check(void * p)
{
if (!p)
{
fprintf(stderr, "Error to allocate new memory\n");
exit(0);
}
}
int * isNumeric(char * data)
{
int * value;
int ans, i, signMinus, length;
i = 0;
ans = 0;
signMinus = 0;
length = (int)strlen(data);
value = (int *)malloc(sizeof(int));
allocate_check(value);
if (data[0] == '-')
signMinus++;
while ((i + signMinus<length) && (data[i + signMinus] >= '0') && (data[i + signMinus] <= '9'))
{
ans = ans + ((data[i + signMinus]) - 48)*pow(10, length - signMinus - i - 1);
i++;
}
if ((i + signMinus) == length)
*value = (signMinus) ? ans*(-1) : ans;
else
{
free(value);
value = NULL;
}
return value;
}
void freeLinkedList(char ** list, int length)
{
int i;
char ** temp;
i = 0;
while (list && list[i])
{
free(list[i]);
i++;
}
free(list);
}
void insertNewError(char * error)
{
if (!ErrorsAssembler)
{
ErrorsAssembler = (char **)malloc(sizeof(char *));
allocate_check((char **)ErrorsAssembler);
}
else
{
char ** temp;
temp = (char **)realloc((char **)ErrorsAssembler, (EC + 1) * sizeof(char *));
allocate_check(temp);
ErrorsAssembler = temp;
}
ErrorsAssembler[EC] = (char *)malloc(strlen(error) + lenOfNum(LC) + 1);
sprintf(ErrorsAssembler[EC], error, LC); /*( puts string into buffer */
ErrorsAssembler[EC][strlen(error) + lenOfNum(LC)] = '\0';
EC++;
}
void createNewSpaceToITtable(int typeOfOrder)
{
if (!instructions_table) {
instructions_table = (Instruction **)malloc(sizeof(Instruction *));
allocate_check(instructions_table);
}
else
{
Instruction **temp;
temp = (Instruction **)realloc(instructions_table, sizeof(Instruction*)*(IC + 1));
allocate_check(temp);
instructions_table = temp;
}
instructions_table[IC] = (Instruction *)malloc(sizeof(Instruction));
allocate_check(instructions_table[IC]);
switch (typeOfOrder)
{
case 1: /*if type Order is InstructOrder*/
{
instructions_table[IC]->order = (InstructOrder *)malloc(sizeof(InstructOrder));
allocate_check(instructions_table[IC]->order);
break;
}
case 2: /*if type Order is InstructData*/
{
instructions_table[IC]->order = (InstructData *)malloc(sizeof(InstructData));
allocate_check(instructions_table[IC]->order);
break;
}
case 3: /*if type Order is InstructRegister*/
{
instructions_table[IC]->order = (InstructRegisters *)malloc(sizeof(InstructRegisters));
allocate_check(instructions_table[IC]->order);
break;
}
}
}
void insertToItForOperand(char * data, int operand, int isOriginOperand)
{
int * value;
char ** mat_data;
InstructData dataOrder;
InstructRegisters regOrder;
value = NULL;
/*If the given operand is register*/
if (operand == 3)
{
regOrder.reg1 = 0;
regOrder.reg2 = 0;
value = isNumeric(data + 1);
if (isOriginOperand)
regOrder.reg1 = *value;
else
regOrder.reg2 = *value;
createNewSpaceToITtable(3);
*(((InstructRegisters *)(instructions_table[IC]->order))) = regOrder;
instructions_table[IC]->type_order = 2;
IC++;
free(value);
return;
}
/*If the given operand is label,mat or direct addressing*/
if (operand == 0)
{
value = isNumeric(data + 1);
dataOrder.value = *value;
free(value);
}
dataOrder.type_coding = 0;
createNewSpaceToITtable(2);
*(((InstructData *)(instructions_table[IC]->order))) = dataOrder;
instructions_table[IC]->type_order = 1;
IC++;
if (operand == 2)
{
mat_data = isValidMatrix(data);
regOrder.reg1 = (*isNumeric((mat_data[1] + 1)));
regOrder.reg2 = (*isNumeric((mat_data[2] + 1)));
/*allocate new place registers coding*/
InstructOrder *testo = (InstructOrder *)(instructions_table[0]->order);
createNewSpaceToITtable(3);
*(((InstructRegisters *)(instructions_table[IC]->order))) = regOrder;
instructions_table[IC]->type_order = 2;
IC++;
freeLinkedList(mat_data, 3);
}
}
int checkAddressingType(char * data)
{
int addrType;
if (!data)
return -2;
addrType = isDirectOrRegister(data);
if (addrType == -1)
{
char ** mat_data = NULL;
if ((mat_data = isValidMatrix(data)))
addrType = 2;
else
addrType = (isValidLabel(data, 0)) ? 1 : -1;
freeLinkedList(mat_data, 3);
}
return addrType;
}
void insertToIT(char **data, int Instruc_type)
{
int orgOperand, destOperand;
InstructOrder order;
destOperand = -2;
orgOperand = checkAddressingType(data[0]);
if (orgOperand != -2)
destOperand = checkAddressingType(data[1]);
if ((orgOperand == -1) || (destOperand == -1))
{
Failure: insertNewError("Invalid operands in Line: %d");
return;
}
/*if the instruct type is dual places*/
if ((Instruc_type <= SUB) || (Instruc_type == LEA))
{
if ((orgOperand == -2) || (destOperand == -2))
goto Failure;
if (Instruc_type == LEA)
{
if ((orgOperand == 0) || (orgOperand == 3))
goto Failure;
}
else
{
if ((Instruc_type != CMP) && (destOperand == 0))
goto Failure;
}
}
else
{ /*if the instruct type is sole place*/
if (((Instruc_type >= NOT) && (Instruc_type <= CLR)) || ((Instruc_type >= INC) && (Instruc_type <= JSR)))
{
if ((orgOperand == -2) || (destOperand != -2))
goto Failure;
if ((Instruc_type != PRN) && (destOperand == 0))
goto Failure;
}
else /*In the condition of Instruc_type==rts or Instruc_type==stop */
{
if ((orgOperand != -2) || (destOperand != -2))
goto Failure;
}
}
/*if the operand/s are valid then: */
order.type_coding = 0;
order.origin_addressing = (orgOperand == -2) ? 0 : orgOperand;
order.dest_addressing = (destOperand == -2) ? 0 : destOperand;
order.opcode = Instruc_type;
createNewSpaceToITtable(1);
*(((InstructOrder *)(instructions_table[IC]->order))) = order;
instructions_table[IC]->type_order = 0;
IC++;
/*if both of the operands are registers*/
if ((orgOperand == 3) && (destOperand == 3))
{
InstructRegisters regOrder;
regOrder.reg1 = (*isNumeric(data[0] + 1));
regOrder.reg2 = (*isNumeric(data[1] + 1));
createNewSpaceToITtable(3);
*(((InstructRegisters *)(instructions_table[IC]->order))) = regOrder;
instructions_table[IC]->type_order = 2;
IC++;
}
else
{
if (orgOperand != -2)
insertToItForOperand(data[0], orgOperand, 1);
if (destOperand != -2)
insertToItForOperand(data[1], destOperand, 0);
}
}
int lenOfNum(int n)
{
int ans;
ans = 1;
while ((n = (n / 10)) >= 1)
{
ans++;
}
return ans;
}
void insertSymbolToTable(char *data, int type)
{
int isDotDot;
Symbol* temp;
isDotDot = 0;
if (data[strlen(data) - 1] == ':')
isDotDot = 1;
temp = (Symbol*)malloc(sizeof(Symbol));
allocate_check(temp);
temp->label_name = (char *)calloc(sizeof(char), strlen(data) - isDotDot);
allocate_check((temp->label_name));
strcpy(temp->label_name, data);
/*need to add check for the copy operation*/
(temp->label_name)[strlen(temp->label_name) - isDotDot] = '\0';
temp->type = type;
if (type == EXTERN)
temp->dec_value = 0;
else
temp->dec_value = DC;
if (findSymbol(temp->label_name) != -1) {
insertNewError("The symbol is already decleared in Line: %d");
free(temp);
}
if (!symbol_table)
{
symbol_table = (Symbol **)malloc(sizeof(Symbol*));
allocate_check(symbol_table);
}
else
{
Symbol ** temp_ST;
temp_ST = (Symbol **)realloc(symbol_table,sizeof(Symbol*)*(SC + 1));
allocate_check(temp_ST);
symbol_table = temp_ST;
}
symbol_table[SC] = temp;
SC++;
}
void CommandLineToLinkedList(int NumIteration)
{
char ** command; /*dynamic matrix of strings*/
char reader; /*char variable to iterate on content std*/
int chars_len, word_counter, isComa, isQuot, ignore; /*chars_len: the char length of the current word; word_counter: indicate in the current number of word; isComa: indicate if coma was encourted more than one time ; isQueat: indicate if quotation marks apeared for ignore the creation of new string */
LC++;
ignore = 0;
reader = '\0';
word_counter = 0;
chars_len = 1;
isComa = 0;
isQuot = 0;
command = (char **)malloc(sizeof(char *));
allocate_check(command); /*-------------Need to check if (char **)commands is valid------------*/
command[0] = (char *)calloc(1, sizeof(char));
allocate_check(command[0]);
Loop: while (((reader = fgetc(fp)) != EOF) && (reader != '\n'))
{
if ((reader == ';') && (!word_counter) && (chars_len == 1))
ignore = 1;
if ((!ignore) && ((reader != ' ') && (reader != '\t') && ((reader != ',') || (isComa))))
{
char * temp;
isQuot = (reader == '"') ? isQuot ^ 1 : isQuot;
temp = (char *)realloc((command[word_counter]), (chars_len + 1) * sizeof(char));
allocate_check(temp);
command[word_counter] = temp;
command[word_counter][chars_len - 1] = reader;
command[word_counter][chars_len] = '\0';
chars_len++;
isComa = 0;
}
else
{
if ((!isQuot) && (chars_len>1))
{
char ** tempT;
word_counter++;
tempT = (char **)realloc(command, (word_counter + 1) * sizeof(char *));
allocate_check(tempT);
command = tempT;
command[word_counter] = (char *)calloc(1, sizeof(char));
allocate_check(command[word_counter]);
chars_len = 1;
isComa = (reader == ',');
}
}
}
if (ignore)
{
LC++;
ignore = 0;
goto Loop;
}
/*Assign in the last+1 place a null (to indicate the end of the current command) */
if (chars_len>1)
{
char ** tempT;
word_counter++;
tempT = (char **)realloc(command, (word_counter + 1) * sizeof(char *));
allocate_check(command);
command = tempT;
}
command[word_counter] = NULL;
if (reader == '\n')
{
if (NumIteration == 1)
FirstCheckingCommand(command);
else
SecondCheckingCommand(command);
freeLinkedList(command, word_counter);
CommandLineToLinkedList(NumIteration);
}
else /*if c is EOF*/
{
if (NumIteration == 1)
FirstCheckingCommand(command);
else
{
int i;
SecondCheckingCommand(command);
i = 0;
while ((SymbolEntry>0) && (EC == 0))
{
int index;
index = symbolType_to_entry[--SymbolEntry];
symbol_table[index]->type = ENTRY;
}
free(symbolType_to_entry);
}
freeLinkedList(command, word_counter);
}
}
void FirstCheckingCommand(char ** command)
{
int flag_symbol_type;
/*if the given string list is null/empty */
if (!(*command))
return;
/*In the case that the first string on the current command line is a label(symbol) */
if ((isValidLabel((command[0]), 1)) && (((flag_symbol_type = isInstruction(command[1], 1)) >= 0)))
{
/*if the instrct type is an data or extern*/
if (((flag_symbol_type >= DATA) && (flag_symbol_type <= MAT)) || (flag_symbol_type == EXTERN))
{
insertSymbolToTable(command[0], flag_symbol_type);
insertToDT(&command[2], flag_symbol_type);
}
/*if the instrct type is an instruction*/
else if (flag_symbol_type <= 15)
{
insertSymbolToTable(command[0], flag_symbol_type);
insertToIT(&command[2], flag_symbol_type); /*the command[2] is first operand*/
}
}
else /*if the commands[0] isn't label*/
{
if ((flag_symbol_type = isInstruction(command[0], 0)) >= 0)
{
if ((flag_symbol_type >= DATA) && (flag_symbol_type <= MAT))
{
insertToDT(&command[1], flag_symbol_type);
return;
}
if (flag_symbol_type >= 19)
{
if (flag_symbol_type == 20) /*if is .extern insruct type then we will enter the command into the symbol table*/
insertSymbolToTable(command[1], flag_symbol_type);
}
else
{
insertToIT(&command[1], flag_symbol_type); /*the command[1] is first operand*/
}
}
else if (!isValidLabel((command[0]), 1))
insertNewError("Unidentified command line: %d");
}
}
/*The Secound check of the given command line*/
void SecondCheckingCommand(char ** command)
{
int flag_symbol_type;
int flag; /*if there is a label(symbol) in the current given command line*/
/*if the given string list is null/empty */
if (!(*command))
return;
flag = 0;
if (isValidLabel(command[0], 1))
{
/*In the case that the first string on the current command line is a label(symbol) */
flag = 1;
}
if ((flag_symbol_type = isInstruction(command[flag], 1)) == 19)
{
/*In the case that the second string is .entry*/
int index;
index = findSymbol(command[flag + 1]);
if (index == -1)
insertNewError("The entry symbol defining isn't valid: %d");
else
{
symbolType_to_entry[SymbolEntry] = index;
SymbolEntry++;
}
}
else if (flag_symbol_type <= 15)
{
updateInstruction(&command[flag + 1], flag_symbol_type); /*the command[2] is first operand*/
}
}
int isGoodLetter(char toTest) {
int tester;
tester = (int)toTest;
if ((tester >= 65 && tester <= 90) || (tester >= 97 && tester <= 122) || (tester >= 48 && tester <= 57))
{
return 1;
}
return 0;
}
int isDirectOrRegister(char * data)
{
if ((data[0] == '#') || (data[0] == 'r'))
{
int *value;
value = isNumeric(data + 1);
if ((!value) || ((data[0] == 'r') && ((*value<0) || (*value>7)))) /*if the operand is reg and the domain value is out of bounds-> return -1*/
return -1;
return (data[0] == '#') ? 0 : 3;
}
return -1;
}
/*Bool Function that ppp checks if the label is valid by return boolean value, if will be an error the function will insert the match error into ErrorsAssembler table */
int isValidLabel(char * label, int flagDotDot)
{
int flag; /*flag=0 is not valid label; flag=1 is valid label */
size_t length;
length = strlen(label);
flag = 1;
if (isInstruction(label, 0) >= 0)
flag = 0;
else
{
int k;
if ((length>30) || (!isGoodLetter(label[0])))
return 0;
for (k = 0; k < (length - 1 + (!flagDotDot)) && (flag); k++)
{
if (!isGoodLetter(label[k]))
flag = 0;
}
if ((flagDotDot) && (label[k] != ':'))
flag = 0;
}
return flag;
}
int isInstruction(char * order, int flagMessage)
{
if (!order)
goto Failure;
if (strcmp(order, "mov") == 0) {
return 0;
}
if (strcmp(order, "cmp") == 0) {
return 1;
}
if (strcmp(order, "add") == 0) {
return 2;
}
if (strcmp(order, "sub") == 0) {
return 3;
}
if (strcmp(order, "not") == 0) {
return 4;
}
if (strcmp(order, "clr") == 0) {
return 5;
}
if (strcmp(order, "lea") == 0) {
return 6;
}
if (strcmp(order, "inc") == 0) {
return 7;
}
if (strcmp(order, "dec") == 0) {
return 8;
}
if (strcmp(order, "jmp") == 0) {
return 9;
}
if (strcmp(order, "bne") == 0) {
return 10;
}
if (strcmp(order, "red") == 0) {
return 11;
}
if (strcmp(order, "prn") == 0) {
return 12;
}
if (strcmp(order, "jsr") == 0) {
return 13;
}
if (strcmp(order, "rts") == 0) {
return 14;
}
if (strcmp(order, "stop") == 0) {
return 15;
}
if (strcmp(order, ".data") == 0) {
return 16;
}
if (strcmp(order, ".string") == 0) {
return 17;
}
if (strcmp(order, ".mat") == 0) {
return 18;
}
if (strcmp(order, ".entry") == 0) {
return 19;
}
if (strcmp(order, ".extern") == 0) {
return 20;
}
Failure:if (flagMessage)
insertNewError("Invalid or missing instruction in line: %d");
return -1;
}
int findSymbol(char * data)
{
int i;
if (!data)
return -1;
i = 0;
while (i<SC)
{
if (strcmp(symbol_table[i]->label_name, data) == 0)
return i;
i++;
}
return -1;
}
char ** isValidMatrix(char * mat)
{
char ** matFixed; /*dynamic matrix of strings*/
int wordCounter, balance, i, chars_len;
char reader, prevReader;
i = 0;
balance = 0;
prevReader = '\0';
matFixed = NULL;
reader = '\0';
chars_len = 1;
wordCounter = 0;
matFixed = (char **)malloc(sizeof(char *));
allocate_check(matFixed);
matFixed[0] = (char *)calloc(1, sizeof(char));
allocate_check(matFixed[0]);
while ((balance >= 0) && ((reader = mat[i]) != '\0'))
{
if (reader == '[')
{
if (wordCounter == 0)
{
if (!isValidLabel(matFixed[0], 0))
{
freeLinkedList(matFixed, wordCounter);
return NULL;
}
}
else
{
if (prevReader != ']')
{
freeLinkedList(matFixed, wordCounter);
return NULL;
}
}
}
if (reader == ']')
{
if (isDirectOrRegister(matFixed[wordCounter]) != 3)
{
freeLinkedList(matFixed, wordCounter);
return NULL;
}
}
if ((reader == ']') || (reader == '['))
{
if (chars_len>1)
{
char ** temp_mat;
wordCounter++;
temp_mat = (char **)realloc(matFixed,sizeof(char*)*(wordCounter + 1));
allocate_check(temp_mat);
matFixed = temp_mat;
matFixed[wordCounter] = (char *)calloc(1, sizeof(char));
allocate_check(matFixed[wordCounter]);
chars_len = 1;
}
balance = (reader == '[') ? balance + 1 : balance - 1;
}
else
{
char * temp_st;
temp_st = (char *)realloc(matFixed[wordCounter],(chars_len + 1) * sizeof(char));
allocate_check(temp_st);
matFixed[wordCounter] = temp_st;
matFixed[wordCounter][chars_len - 1] = reader;
matFixed[wordCounter][chars_len] = '\0';
chars_len++;
}
prevReader = reader;
i++;
}
if (chars_len>1)
{
char ** temp_mat;
wordCounter++;
temp_mat = (char **)realloc(matFixed,sizeof(char*)*(wordCounter + 1));
allocate_check(temp_mat);
matFixed = temp_mat;
}
matFixed[wordCounter] = NULL;
if ((balance != 0) || (wordCounter != 3))
{
freeLinkedList(matFixed, wordCounter);
return NULL;
}
return matFixed;
}
int isValidMatrixToData(char * mat)
{
int * value;
char * num;
int balance, i, ans, chars_len, numOfBrac;
char reader, prevReader;
i = 0;
value = NULL;
chars_len = 1;
balance = 0;
prevReader = '\0';
reader = '\0';
ans = 1;
numOfBrac = 0;
num = (char *)calloc(1, sizeof(char));
allocate_check(num);