int main(int argc, char **argv)
{
char *base, *params, *key;
struct mips_cpu *pcpu;
Elf32_Sym *s_params, *s_time;
unsigned long long TIME;
if((argc != 3) && (argc != 4)) {
fprintf(stderr, "USAGE: %s ELF PARAMS [KEY]\n", argv[0]);
exit(1);
}
params = argv[2];
key = argc == 4 ? argv[3] : NULL;
if(!(base = malloc(MEMSZ))) {
perror("malloc");
exit(1);
}
mips_init();
pcpu = mips_init_cpu(base, MEMSZ, STKSZ);
prepare_cpu(pcpu, argv[1], key);
if(!(s_params = mips_elf_find_symbol(pcpu, "PARAMS")) ||
!(s_time = mips_elf_find_symbol(pcpu, "TIME"))) {
fprintf(stderr, "ERROR: 'PARAMS' and/or 'TIME' symbols not found\n");
exit(1);
}
if((s_params->st_size % 4) || !s_params->st_size) {
fprintf(stderr, "ERROR: 'PARAMS' has invalid size %u\n", s_params->st_size);
exit(1);
}
if(s_time->st_size != 8) {
fprintf(stderr, "ERROR: 'TIME' has size %u != 8\n", s_time->st_size);
exit(1);
}
parse_params(pcpu, s_params, params);
execute_loop(pcpu);
TIME = mips_peek_uw(pcpu, s_time->st_value+4); /* high word */
TIME = (TIME << 32) | mips_peek_uw(pcpu, s_time->st_value); /* low word */
printf("%llu\n", TIME);
return 0;
}
// sudo apt-get install libncurses5-dev
// http://stackoverflow.com/questions/4025891/create-a-function-to-check-for-key-press-in-unix-using-ncurses
// https://viget.com/extend/game-programming-in-c-with-the-ncurses-library
int main(int argc, char **argv) {
char *debug_filename = NULL;
char *input_filename = NULL;
int c;
opterr = 0;
while ((c = getopt(argc, argv, "d:p:")) != -1) {
switch (c) {
case 'd':
debug_filename = optarg;
break;
case 'p':
input_filename = optarg;
break;
case '?':
fprintf(stderr, "Unknown option: %c\n", optopt);
print_usage();
return 1;
default:
print_usage();
return 1;
}
}
if (optind < argc || input_filename == NULL || (ends_with(input_filename, required_input_ext, 0) != 1)) {
print_usage();
return 1;
}
FILE *input_file = fopen(input_filename, "rb");
if (!input_file) {
fprintf(stderr, "Fatal error when opening input file: '%s'\n", argv[1]);
exit(1);
}
FILE *debug_file = NULL;
if (debug_filename) {
debug_file = fopen(debug_filename, "w");
}
chip_8_cpu cpu = initialize_cpu();
initialize_memory(cpu, input_file);
fclose(input_file);
execute_loop(cpu, debug_file);
free_cpu(cpu);
return EXIT_SUCCESS;
}