int parse_instruction(int fd_src, t_parser *parser, t_labels **list)
{
char *line;
char **my_tab;
line = get_next_instruction(fd_src, parser);
while (line != NULL)
{
my_tab = my_str_to_wordtab(line, SEPARATOR_CHAR);
if (parse_label(parser, my_tab, list) == 1)
{
free_tab(my_tab);
free(line);
return (1);
}
free_tab(my_tab);
free(line);
line = get_next_instruction(fd_src, parser);
}
return (0);
}
bool MIPS32_Cpu::tick() {
try {
last_pc = pc;
execute(get_next_instruction());
} catch(const CpuException &e) {
cerr << e.what() << endl;
//cerr << "Press Enter to continue..." << endl;
//cin.get();
pc = e.pc;
} catch(const std::runtime_error &e) {
cerr << e.what() << endl;
//cerr << "Press Enter to continue..." << endl;
//cin.get();
pc = (last_pc & 0xfffffffc) + 4;
}
return true;
}
static void add_program_segment(UM_machine machine, char *file)
{
struct stat fileStats;
FILE *FILE = fopen(file, "r");
/* exit if the file does not exist or if stat fails */
if(stat(file, &fileStats) < 0){
fprintf(stderr, "Stat failed. Invalid file.\n");
exit(EXIT_FAILURE);
}
int fileSize = fileStats.st_size;
/* exit if fileSize indicates the wrong number of bytes */
if(fileSize%4 != 0){
fprintf(stderr, "Program file formatted incorrectly.\n");
exit(EXIT_FAILURE);
}
int num_instructions = fileSize / BYTES_PER_INSTRUCTION;
UM_segment program_segment = get_new_segment_of_size(num_instructions);
/* get the instructions from the input file */
for(int i=0; i<num_instructions; i++){
UM_instruction next_instruction = get_next_instruction(FILE);
UM_instruction *instruction_i_p =
UArray_at(program_segment->words, i);
*instruction_i_p = next_instruction;
}
/* put the program segment in the mapped segments sequence */
Seq_addlo(machine->address_space->mapped_segments, program_segment);
machine->address_space->ID_counter++;
machine->num_instructions = num_instructions;
fclose(FILE);
}
