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firstPass.c
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/* ------------------------------------- */
/* Yoav Levy */
/* */
/* 2023 Semester A */
/* ------------------------------------- */
#include "firstPass.h"
/* Some constants: */
const char *firstGroupCommands[NUM_OF_COMMANDS_FIRST_GROUP] = {"mov", "cmp", "add", "sub", "lea"};
const char *secondGroupCommands[NUM_OF_COMMANDS_SECOND_GROUP] = {"not", "clr", "inc", "dec", "jmp", "bne", "red", "prn", "jsr"};
const char *thirdGroupCommands[NUM_OF_COMMANDS_THIRD_GROUP] = {"rts", "stop"};
const char *jumpWithParameters[NUM_OF_JWP] = {"jmp", "bne", "jsr"};
const char *dataDirectives[NUM_OF_DATA_DIRECTIVES] = {".data", ".string"};
const char *labelDirectives[NUM_OF_LABEL_DIRECTIVES] = {".entry", ".extern"};
const char *directiveNames[NUM_OF_DATA_DIRECTIVES + NUM_OF_LABEL_DIRECTIVES] = {"entry", "extern", "data", "string"};
/* Setting up variables that we will use through the first pass: */
int error;
int lineError;
int ic;
int dc;
int lineNum;
commandName whichCommand; /* which opcode the command has (technicly opcode + 1)*/
adressingSystem targetOpAdressing; /* which adressing system is the target operand */
adressingSystem sourceOpAdressing; /* which adressing system is the source operand */
adressingSystem param1Adressing; /* which adressing system is parameter number 1 */
adressingSystem param2Adressing; /* which adressing system is parameter number 2 */
int reg1; /*which register number*/
int reg2; /*which register number*/
/* This function makes the first pass. */
isFail firstPass(FILE *fp, int codeArr[], int dataArr[], label **labelsList, labelOperands **labelOperandsList, entryLabel **entryList, int length[])
{
/* Resetting the variables */
char line[LINE_LENGTH];
error = SUCCESS;
lineNum = 1;
ic = MEMORY_LOAD_START;
dc = 0;
/* Going through every line of the file: */
while (fgets(line, LINE_LENGTH, fp) != NULL)
{
lineError = SUCCESS;
/* Ignore this line, if needed: */
if (!ignoreLine(line))
{
/* Process the line */
processLine(line, codeArr, dataArr, labelsList, labelOperandsList, entryList);
}
lineNum += 1;
if (lineError != SUCCESS)
{
error = lineError;
}
}
/* Offset all of the labels that marked as data, adding ic to dc: */
offsetDataLabels(*labelsList, ic);
/* Join the code and data arrays: */
joinDataAndCommand(codeArr, dataArr);
/* Set the length of the code and data arrays: */
length[0] = ic - MEMORY_LOAD_START;
length[1] = dc;
return error;
}
/* This function processes a line: */
void processLine(char *line, int codeArr[], int dataArr[], label **labelsList, labelOperands **labelOperandsList, entryLabel **entryList)
{
/* Setting up variables: */
boolean hasLabel = FALSE;
char label[LABEL_LENGTH];
char currentWord[LINE_LENGTH];
/* Skip spaces: */
line = skipSpaces(line);
/* If the line is empty, ignore it: */
if (endOfLine(line))
{
return;
}
/* Copy the first word of the line: */
copyNextWord(line, currentWord);
/* Checking if there is : in the current word: */
if (strstr(currentWord, ":") != NULL)
{
/* If so, saving only the label to the current word: */
copyUntilSign(currentWord, currentWord, ':');
/* If the first word is a label, handle it: */
if (isLabelDefinition(currentWord))
{
/* Set the label: */
hasLabel = TRUE;
strcpy(label, currentWord);
/* Skip the label and spaces, and copy the next word: */
line = skipSpaces(skipUntilSign(line, ':') + 1);
copyNextWord(line, currentWord);
/* If the next word is a macro, print an error: */
if (strcmp(currentWord, "mcr") == 0)
{
printf("ERROR: Macro can't be define after a label (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* If the line is empty, there is an error: */
if (endOfLine(line))
{
printf("ERROR: Missing command after label (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
}
}
/* If the first word is a data directive, handle it: */
if (isDataDirective(currentWord))
{
/* If there is a label, add it to the list and mark as data: */
if (hasLabel)
{
if (!addLabel(labelsList, label, dc, FALSE, FALSE, TRUE))
{
/* If the label already exists, print an error: */
printf("ERROR: Label %s already exists (LINE %d).\n", label, lineNum);
}
}
/* Handle the data directive: */
handleDataDirective(line, currentWord, dataArr);
return;
}
/* If the first word is a label directive, handle it: */
if (isLabelDirective(currentWord))
{
/* If there is a label, print a warning: */
if (hasLabel)
{
printf("WARNING: Declaration of label in .entry or .extern command (LINE %d).\n", lineNum);
}
/* Handle the label directive: */
handleLabelDirective(line, currentWord, labelsList, entryList);
return;
}
/* Add the label to the list */
if (hasLabel)
{
if (!addLabel(labelsList, label, ic, FALSE, FALSE, FALSE))
{
/* If the label already exists, print an error: */
printf("ERROR: Label %s already exists (LINE %d).\n", label, lineNum);
}
}
/* Getting which command is the next word: */
whichCommand = isCommand(currentWord);
/* Setting the registers to be NO_REG */
reg1 = NO_REG;
reg2 = NO_REG;
/* If the next word is a command, handle it: */
if (whichCommand && lineError == SUCCESS)
{
/* Saving the number of arguments that the command needs: */
int numOfArgs;
numOfArgs = whichCommandGroup(currentWord);
if (numOfArgs == TwoArg)
{
/* command with two arguments: */
if (!twoArgAdressing(line, currentWord, codeArr, labelOperandsList))
return;
}
else if (numOfArgs == OneArg)
{
/* command with one argument: */
sourceOpAdressing = NoOperand;
/* If the command is a jump command, handle it "differently": */
if (isJumpCommand(currentWord))
{
if (!JumpAdressing(line, currentWord, codeArr, labelOperandsList))
return;
}
else
{
/* If the command is not a jump command, handle it "normally": */
if (!oneArgAdressing(line, currentWord, codeArr, labelOperandsList))
return;
}
}
else if (numOfArgs == ZeroArg)
{
/* command with no arguments: */
if (!zeroArgAdressing(line, currentWord))
return;
}
/* If there is no error, add the command to the code array: */
if (lineError == SUCCESS)
codeFirstWord(codeArr, whichCommand, ic, targetOpAdressing, sourceOpAdressing, param1Adressing, param2Adressing);
/* Update the IC: */
updateIc();
}
/* If the command is invalid: */
else if (lineError == SUCCESS)
{
printf("ERROR: Invalid command name (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
}
/* This function handles the label directives ('.extern' and '.entry') */
void handleLabelDirective(char *line, char *currentWord, label **labelsList, entryLabel **entryList)
{
boolean isExtern = FALSE;
/* If the first word is '.extern': */
if (strcmp(currentWord, ".extern") == 0)
{
isExtern = TRUE;
}
/* Skip spaces and copy the next word: */
line = skipSpaces(skipNotSpaces(line));
copyNextWord(line, currentWord);
/* If the next word is empty, there is an error: */
if (endOfLine(line))
{
printf("ERROR: Missing label after .extern or .entry (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* If the next word is not a valid label, print an error: */
if (!isValidLabel(currentWord))
{
printf("ERROR: Invalid label name (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* If the next word is a valid label, add it to the list: */
if (!isExtern)
{
/* Add it to the entry labels list: */
addLabelEntry(entryList, currentWord, lineNum);
return;
}
if (!addLabel(labelsList, currentWord, 0, TRUE, FALSE, FALSE))
{
/* If the label already exists, print an error: */
printf("ERROR: Label %s already exists (LINE %d).\n", currentWord, lineNum);
lineError = FAIL;
return;
}
}
/* This function handles the data directives ('.data' and '.string') */
void handleDataDirective(char *line, char *currentWord, int dataArr[])
{
char *pt;
char *lineCopy;
char isLastCharComma = FALSE;
int num;
/* If the first word is '.string': */
if (strcmp(currentWord, ".string") == 0)
{
/* Skip spaces and copy the next word: */
line = skipSpaces(skipNotSpaces(line));
/* If the next word is empty, there is an error: */
if (endOfLine(line))
{
printf("ERROR: Missing string after .string (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* If the next word does not start with ", print an error: */
if (line[0] != '"')
{
printf("ERROR: Missing \" at the start of .string decleration (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* Skipping the " */
line = line + 1;
/* Copying the line to a new string: */
lineCopy = (char *)malloc(strlen(line) + 1);
strcpy(lineCopy, line);
pt = lineCopy;
/* If the next word does not end with ", print an error: */
while (pt[0] != '"')
{
if (endOfLine(pt))
{
printf("ERROR: Missing \" at the end of .string decleration (LINE %d).\n", lineNum);
lineError = FAIL;
free(lineCopy);
return;
}
pt = pt + 1;
}
pt = pt + 1;
/* If there are extra characters after the string, print an error: */
if (!endOfLine(skipSpaces(pt)))
{
printf("ERROR: Extra characters after .string decleration (LINE %d).\n", lineNum);
lineError = FAIL;
free(lineCopy);
return;
}
free(lineCopy);
/* Copying the string to the data array: */
while (line[0] != '"')
{
if (endOfLine(line))
{
printf("ERROR: Missing \" at the end of .string decleration (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
dataArr[dc] = line[0];
dc++;
line = line + 1;
}
dataArr[dc] = '\0';
dc++;
}
else
{
/* If the first word is '.data': */
/* Skip spaces and copy the next word: */
line = skipSpaces(skipNotSpaces(line));
/* If the next word is empty, there is an error: */
if (endOfLine(line))
{
printf("ERROR: Missing number after .data (LINE %d).\n", lineNum);
lineError = FAIL;
return;
}
/* Copying the line to a new string: */
lineCopy = (char *)malloc(strlen(line) + 1);
strcpy(lineCopy, line);
pt = lineCopy;
/* Validating the numbers after '.data': */
while (!endOfLine(pt))
{
if (pt[0] == ',')
{
if (isLastCharComma)
{
printf("ERROR: Missing number after , (LINE %d).\n", lineNum);
lineError = FAIL;
free(lineCopy);
return;
}
isLastCharComma = TRUE;
pt = skipSpaces(pt + 1);
continue;
}
if (!isdigit(pt[0]) && pt[0] != '-' && pt[0] != '+')
{
printf("ERROR: Invalid number in .data decleration (LINE %d).\n", lineNum);
lineError = FAIL;
free(lineCopy);
return;
}
isLastCharComma = FALSE;
pt = skipSpaces(pt + 1);
}
/* Splitting by ','*/
pt = strtok(line, ",");
while (pt != NULL)
{
/* Saving every number to the data array: */
num = atoi(pt);
dataArr[dc] = num;
dc++;
pt = strtok(NULL, ",");
}
}
}
/* This function handles commands with two arguments. */
/* Return FALSE if theres an error in the command, else - save which adressing systems command is using. */
boolean twoArgAdressing(char *line, char *currentWord, int codeArr[], labelOperands **labelOperandsList)
{
char *pt;
pt = skipNotSpaces(line);
pt = skipSpaces(pt);
if (endOfLine(pt))
{
printf("ERROR: Missing source operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
copyNextOperandName(pt, currentWord);
if (isImmediate(currentWord))
{
if (!isValidAdressingSystem(Immediate, whichCommand, 1))
return FALSE;
sourceOpAdressing = Immediate;
/*******/
codeImmediate(codeArr, ic, immediateValue(currentWord));
}
else if (isRegister(currentWord))
{
if (!isValidAdressingSystem(Register, whichCommand, 1))
return FALSE;
sourceOpAdressing = Register;
reg1 = currentWord[1] - '0';
}
else
{
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
sourceOpAdressing = Label;
addLabelOperands(labelOperandsList, currentWord, ic + 1, lineNum);
}
pt = skipComma(pt);
if (lineError == FAIL)
return FALSE;
if (endOfLine(pt))
{
printf("ERROR: Missing target operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
if ((*pt) == ',')
{
printf("ERROR: Multiple consecutive comma (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
copyNextOperandName(pt, currentWord);
if (isImmediate(currentWord))
{
if (!isValidAdressingSystem(Immediate, whichCommand, 0))
return FALSE;
targetOpAdressing = Immediate;
codeImmediate(codeArr, ic + 2, immediateValue(currentWord));
}
else if (isRegister(currentWord))
{
targetOpAdressing = Register;
reg2 = currentWord[1] - '0';
}
else
{
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
targetOpAdressing = Label;
addLabelOperands(labelOperandsList, currentWord, ic + 2, lineNum);
}
pt = skipNotSpaces(pt);
pt = skipSpaces(pt);
if (!endOfLine(pt))
{
printf("ERROR: Extraneous text after end of command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
codeRegister(codeArr, ic, reg1, reg2);
return TRUE;
}
/* This function handles commands with one argument. */
/* Return FALSE if theres an error in the command, else - save which adressing systems command is using. */
boolean oneArgAdressing(char *line, char *currentWord, int codeArr[], labelOperands **labelOperandsList)
{
char *pt;
pt = skipNotSpaces(line);
pt = skipSpaces(pt);
if (endOfLine(pt))
{
printf("ERROR: Missing operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
copyNextWord(pt, currentWord);
if (isImmediate(currentWord))
{
if (!isValidAdressingSystem(Immediate, whichCommand, 0))
return FALSE;
targetOpAdressing = Immediate;
/*******/
codeImmediate(codeArr, ic, immediateValue(currentWord));
}
else if (isRegister(currentWord))
{
targetOpAdressing = Register; /**/
reg1 = currentWord[1] - '0';
}
else
{
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
targetOpAdressing = Label; /**/
addLabelOperands(labelOperandsList, currentWord, ic + 1, lineNum);
}
pt = skipNotSpaces(pt);
pt = skipSpaces(pt);
if (!endOfLine(pt))
{
printf("ERROR: Extraneous text after end of command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
codeRegister(codeArr, ic, reg1, reg2);
return TRUE;
}
/* This function handles commands with no arguments. */
/* Return FALSE if theres an error in the command, else - save which adressing systems command is using. */
boolean zeroArgAdressing(char *line, char *currentWord)
{
char *pt;
pt = skipNotSpaces(line);
pt = skipSpaces(pt);
if (!endOfLine(pt))
{
printf("ERROR: Extraneous text after end of command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
targetOpAdressing = NoOperand;
sourceOpAdressing = NoOperand;
return TRUE;
}
/* This function handles jump commands. */
/* Return FALSE if theres an error in the command, else - save which adressing systems command is using. */
boolean JumpAdressing(char *line, char *currentWord, int codeArr[], labelOperands **labelOperandsList)
{
char *pt;
pt = skipNotSpaces(line);
pt = skipSpaces(pt);
if (endOfLine(pt))
{
printf("ERROR: Missing operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
copyUntilSign(pt, currentWord, '(');
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal operand (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
pt = skipUntilSign(pt, '(');
if (isspace(*pt))
{
pt = skipSpaces(pt);
if (endOfLine(pt))
{
targetOpAdressing = Label;
addLabelOperands(labelOperandsList, currentWord, ic + 1, lineNum);
}
else
{
printf("ERROR: Extraneous text after end of command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
}
else
{
pt++;
addLabelOperands(labelOperandsList, currentWord, ic + 1, lineNum);
if (isspace(*pt))
{
pt = skipSpaces(pt);
if ((*pt) == ',')
{
printf("ERROR: Missing parameter (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else
{
printf("ERROR: Structure of command incorrect (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
}
copyUntilSign(pt, currentWord, ',');
/**/
if (isImmediate(currentWord))
{
param1Adressing = Immediate;
/*******/
codeImmediate(codeArr, ic + 1, immediateValue(currentWord));
}
else if (isRegister(currentWord))
{
param1Adressing = Register;
reg1 = currentWord[1] - '0';
}
else
{
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal parameter (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
param1Adressing = Label;
addLabelOperands(labelOperandsList, currentWord, ic + 2, lineNum);
}
/**/
pt = skipUntilSign(pt, ',');
if (isspace(*pt))
{
pt = skipSpaces(pt);
if (endOfLine(pt))
{
printf("ERROR: Structure of command incorrect (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else if (*pt == ',')
{
printf("ERROR: Structure of command incorrect (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else
{
printf("ERROR: Comma missing (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
}
else
{
pt++;
if (isspace(*pt))
{
pt = skipSpaces(pt);
if ((*pt) == ')')
{
printf("ERROR: Missing parameter (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else
{
printf("ERROR: Structure of command incorrect (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
}
copyUntilSign(pt, currentWord, ')');
/**/
if (isImmediate(currentWord))
{
param2Adressing = Immediate;
/*******/
codeImmediate(codeArr, ic + 2, immediateValue(currentWord));
}
else if (isRegister(currentWord))
{
param2Adressing = Register;
reg2 = currentWord[1] - '0';
}
else
{
if (!isValidLabel(currentWord))
{
printf("ERROR: Illegal parameter (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
param2Adressing = Label;
addLabelOperands(labelOperandsList, currentWord, ic + 3, lineNum);
}
/**/
pt = skipUntilSign(pt, ')');
if (isspace(*pt))
{
printf("ERROR: Structure of command incorrect (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else
{
pt++;
pt = skipSpaces(pt);
if (!endOfLine(pt))
{
printf("ERROR: Extraneous text after end of command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
else
{
targetOpAdressing = JumpWithParam;
}
}
}
}
codeRegister(codeArr, ic + 1, reg1, reg2);
return TRUE;
}
/* This function validates a label name. */
/* Returns TRUE if the word is valid. Else - FALSE*/
boolean isValidLabel(char *word)
{
int wordLen = strlen(word);
int i;
if (word == NULL)
return FALSE;
if (wordLen > LABEL_LENGTH)
return FALSE;
if (!isalpha(word[0]))
return FALSE;
if (isCommand(word))
return FALSE;
if (isRegister(word))
return FALSE;
if (isDirectiveName(word))
return FALSE;
for (i = 0; i < wordLen; i++)
{
if (!isalpha(word[i]) && !isdigit(word[i]))
return FALSE;
}
return TRUE;
}
/* This function checks if the word is a label definition. */
/* Returns TRUE if the word is a label definition. Else - FALSE*/
boolean isLabelDefinition(char *word)
{
int wordLen = strlen(word);
int i;
if (word == NULL)
{
return FALSE;
}
if (wordLen > LABEL_LENGTH)
{
printf("ERROR: Lable length must be lower than %d (LINE %d).\n", LABEL_LENGTH, lineNum);
lineError = FAIL;
return FALSE;
}
if (!isalpha(word[0]))
{
printf("ERROR: Lable must start with a letter (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
if (isCommand(word))
{
printf("ERROR: Lable can't be similar to command (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
if (isRegister(word))
{
printf("ERROR: Lable can't be similar to register name (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
if (isDirectiveName(word))
{
printf("ERROR: Lable can't be similar to directive name (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
for (i = 0; i < wordLen - 1; i++)
{
if (!isalpha(word[i]) && !isdigit(word[i]))
{
printf("ERROR: Lable cant have non-digit and non-alphabetic characters (LINE %d).\n", lineNum);
lineError = FAIL;
return FALSE;
}
}
return TRUE;
}
/* This function checks if the word is a directive name. */
/* Returns TRUE if the word is a directive name. Else - FALSE*/
boolean isDirectiveName(char *word)
{
int i;
for (i = 0; i < NUM_OF_DATA_DIRECTIVES + NUM_OF_LABEL_DIRECTIVES; i++)
{
if (strcmp(word, directiveNames[i]) == 0)
{
return TRUE;
}
}
return FALSE;
}
/* This function checks if the word is a register name. */
/* Returns TRUE if the word is a register name. Else - FALSE*/
boolean isRegister(char *word)
{
if (strlen(word) == 2 && word[0] == 'r' && word[1] >= '0' && word[1] <= '7')
{
return TRUE;
}
return FALSE;
}
/* This function checks if the word is a command name. */
/* Returns the index of the command if the word is a command name. Else - 0*/
int isCommand(char *word)
{
const char *command_names[NUM_OF_COMMANDS] = {"mov", "cmp", "add", "sub", "not", "clr", "lea", "inc", "dec", "jmp", "bne", "red", "prn", "jsr", "rts", "stop"};
int i;
for (i = 0; i < NUM_OF_COMMANDS; i++)
{
if (strcmp(word, command_names[i]) == 0)
{
return i + 1;
}
}
return 0;
}
/* This function returns the immediate value of a word. */
int immediateValue(char *word)
{
int num;
if (word[1] == '+')
num = atoi(word + 2);
else if (word[1] == '-')
{
num = atoi(word + 2);
num = -num;
}
else
num = atoi(word + 1);
return num;
}
/* This function checks if the word is an immediate value. */
/* Returns TRUE if the word is an immediate value. Else - FALSE*/
boolean isImmediate(char *word)
{
int i;
if (word[0] != '#')
return FALSE;
if (word[1] != '+' && word[1] != '-' && (!isdigit(word[1])))
return FALSE;
for (i = 2; word[i] != '\0' && word[i] != '\n'; i++)
{
if (!isdigit(word[i]))
return FALSE;
}
return TRUE;
}
/* This function checks if the word is a data directive. */
/* Returns TRUE if the word is a data directive. Else - FALSE*/
boolean isDataDirective(char *word)
{
int i;
for (i = 0; i < NUM_OF_DATA_DIRECTIVES; i++)
{
if (strcmp(word, dataDirectives[i]) == 0)
{
return TRUE;
}
}
return FALSE;
}
/* This function checks if the word is a label directive. */
/* Returns TRUE if the word is a label directive. Else - FALSE*/
boolean isLabelDirective(char *word)
{
int i;
for (i = 0; i < NUM_OF_LABEL_DIRECTIVES; i++)
{
if (strcmp(word, labelDirectives[i]) == 0)
{
return TRUE;
}
}
return FALSE;
}
/* This function returns the number of the command group of the word. */
/* 1 for TwoArg, 2 for OneArg, and 3 for ZeroArg*/
int whichCommandGroup(char *word)
{
int i;