/* Function Name: load
* Purpose: Driver function. Opens an input file, loads the machine code,
* performs a memory dump, then exits.
*
* Parameters: argc - amount of arguments passed
* args[] - input file name
* Returns: TRUE if program loaded successfully
* FALSE if program failed to load
*/
bool load(int argc, char * args[])
{
if((argc > 1) && (validFileName(args[1]))){ //check for valid file name and # of arguments
FILE* f = fopen(args[1], "r"); //open the file
unsigned char addrCounter = 0; //counter used to check for overlapping addresses
char line[80];
unsigned int addr;
int i; //Address parser count
unsigned int lineCount = 0;
int len; //Length of instruction
unsigned char dataByte; //Temporary storage of info
bool loadErr = FALSE;
int check;
while(fgets(line,80,f)) //While we haven't reached the end of the file...
{
lineCount++;
check = checkLine(line); //Check the line
if(check == 1) //If the line is valid...
{
addr = grabAddress(line); //Grab the address
if(addr < addrCounter){ //Check for errors with the address
printError(lineCount, line);
loadErr = TRUE;
break;
}
len = lenInst(line); //Find the length of the instruction
int i = 0;
unsigned int byteNo = 0;
while(byteNo < len) //And load the data byte by byte
{
dataByte = grabDataByte(line, 9+i);
putByte(addr, dataByte, &loadErr);
addr++;
byteNo++;
addrCounter = addr;
i += 2;
}
}
else if(check == 0) //If the line is invalid...
{ //Halt loading and give an error message
printError(lineCount, line);
loadErr = TRUE;
break;
}
discardRest(line, f); //If the line or instructions are just spaces, do nothing
}
return loadErr; //return TRUE if program was successfully loaded
}
printf("file opening failed\n usage: yess <filename>.yo\n"); //error message
return TRUE; //return if invalid filename
}
void testFunctions(){
printf("inside main\n \n ");
printf("\n validFileName tests: \n");
printf("bumba.y should return 0: ");
printf("%d\n", validFileName("bumba.y"));
printf("noDot should return 0: ");
printf("%d\n", validFileName("noDot"));
printf("victory.yo should return 1: ");
printf("%d\n", validFileName("victory.yo"));
printf("\n isAddress tests: \n");
printf(" 0x01H: should return 0:");
printf("%d\n",isAddress(" 0x01H:"));
printf(" 1x014: should return 0:");
printf("%d\n",isAddress(" 1x014:"));
printf(" 0x014: should return 1:");
printf("%d\n",isAddress(" 0x014:"));
printf(" 0x6A4: should return 1:");
printf("%d\n",isAddress(" 0x064:"));
//need to add testing for 0x014:00 ... spaces ... |
printf("\n isData tests: \n");
printf(" 0x014: 0z should return 0:");
printf("%d\n",isData(" 0x014: 0z"));
printf(" 0x014: 00ddxx01daq should return 0:");
printf("%d\n",isData(" 0x014: 00ddxx01da0q"));
printf(" 0x014: 00345dzqa000 should return 0:");
printf("%d\n",isData(" 0x014: 000345dzqa000"));
printf(" 0x014: 00ddd0000000 should return 1:");
printf("%d\n",isData(" 0x014: 00ddd0000000 "));
printf(" 0x014: 00000000001 should return 1: ");
printf("%d\n",isData(" 0x014: 000000000001"));
printf(" 0x014: 01 should return 1: ");
printf("%d\n",isData(" 0x014: 01"));
printf("\n isSpaces tests: \n");
printf("should return 0: wxrHtl-jhplzsk");
printf("%d\n",isSpaces("wxrHtl-jhplzsk",0,14));
printf("%d\n",isSpaces("wxrHtl-jhplzsk",0,14));
printf("isSpaces should return 1: ");
printf("%d\n",isSpaces(" ",0,14));
printf("isSpaces should return 1: ");
printf("%d\n",isSpaces(" ",0,2));
printf("isSpaces should return 0: ");
printf("%d\n",isSpaces("d ",0,2));
printf("checkHex tests: \n");
printf("abcdzf0123456789 should return 0: ");
printf("%d\n",checkHex("abcdzf0123456789",0,15));
printf("abcdef0123456789 should return 1: ");
printf("%d\n",checkHex("abcdef0123456789",0,15));
printf("grabAddress tests: \n");
printf(" 0x01a should return 0x01a: ");
printf("%x\n",grabAddress(" 0x01a"));
printf(" 0x014 should return 0x014: ");
printf("%x\n",grabAddress(" 0x014"));
printf("grabDataByte tests: \n");
printf(" 01a402, 4 should return 02: ");
printf("%x\n", grabDataByte("01a402",4));
printf(" 01a402, 2 should return a4: ");
printf("%x\n", grabDataByte("01a402",2));
printf(" 01, 0 should return 01: ");
printf("%x\n", grabDataByte("01",0));
printf("countBytes tests: \n");
printf(" 0x014: 00000000001 should return 5: ");
printf("%x\n", countBytes(" 0x014: 0000000001 "));
printf(" 0x014: 0201 should return 2: ");
printf("%x\n", countBytes(" 0x014: 0201"));
printf(" 0x014: 020100 should return 3: ");
printf("%x\n", countBytes(" 0x014: 020100"));
printf(" 0x014: should return 0: ");
printf("%x\n", countBytes(" 0x014: "));
printf("checkLine tests: \n");
printf(" 0x014 000000000001 |comments should return 0: ");
printf("%d\n", checkLine(" 0x014 000000000001 |comments\n"));
printf("0x014: 000000000001 |comments should return 0: ");
printf("%d\n", checkLine("0x014: 000000000001 |comments\n"));
printf(" 0x014: 000000000001 |comments should return 1: ");
printf("%d\n", checkLine(" 0x014: 000000000001 |comments\n"));
//printf(" 01a402, 2 should return a4: ");
//printf("%x\n", grabDataByte("01a402",2));
//printf(" 01, 0 should return 01: ");
/*
printf("discardRest should return 0: \n");
printf("%d\n",discardRest("",0,15));
printf("discardRest should return 1: \n");
printf("%d\n",discardRest("",0,15));
*/
}
/**
* load
* This function takes a command line argument containing
* the name of a file and loads the contents of the file
* into memory byte by byte until there is an error
* @param: argc: the number of args
* args: the name of the file
* @return: goodLine: returns false if an error was found
*/
bool load(int argc, char *args) {
bool goodLine = TRUE;
int lineNumber = 1;
if(validFileName(args)){
FILE * fi;
fi = fopen(args,"r");
char record[80];
int prevAdr = -1,startAdr,lineSize;
int firstLine = 0;
int loop;
int dataLoc,byteLoc;
int dataLength;
bool lastLineData;
bool memError;
while(fgets(record,80,fi)!=NULL && goodLine){
dataLoc = 9; //Where data starts
byteLoc = 0; //Which byte of data to get
if (isAddress(record)){
startAdr=setLastAddress(record); //Address in a record
}
int lineSize = lineLength(record); //Length of record
if(record[lineSize]!='\n') {
discardRest(record,fi);
}
//Calls the checkLine
if(checkLine(record)) {
dataLength = lengthOfData(record); //Length of data in a record
//If the record isn't the first line of the file
if(firstLine==1) {
if(!(lastLineData&&startAdr>prevAdr)) { //If there was data on the last line make sure the address is bigger
goodLine = FALSE;
//printf("Error on line %d\n",lineNumber);
}
}
//If the record is the first line
else{
if(isAddress(record)) {
firstLine = 1;
}
}
}
//checkLine returns false
else{
//printf("Error on line %d\n",lineNumber);
goodLine = FALSE;
}
//If all checks have passed
if(goodLine){
//Goes through the data
for(loop = 0; loop < dataLength;loop+=2){
//Adds the byte to memory
putByte(startAdr,grabDataByte(record,byteLoc),&memError);
//printf("%x\n",grabDataByte(record,byteLoc));
startAdr++;
byteLoc+=2;
}
//puts(record); //Output record
prevAdr = startAdr - 1;
lineNumber++;
lastLineData = isData(record);
}
else if(goodLine == FALSE){
printf("Error on line %d\n", lineNumber);
puts(record);
}
}
fclose(fi);
}
//If the file didn't open
else{
goodLine = FALSE;
printf("Error opening file");
}
return goodLine;
}
