int main(int argc, char const *argv[])
{
if(argc != 2){
printf("Useage: %s inputfile.txt\n",argv[0]);
exit(-1);
}
input_file =fopen(argv[1],"r");
output_file =fopen("simulation.txt","w");
import(input_file);
ini_context();
int i;
for(i=1;i<32;i++){
clone();
fetch_decode(i);
issue();
alu1();
alu2();
memory();
wb();
cout_state(i,output_file);
}
return 0;
}
int main(int argc, char **argv) {
if (argc > 1) {
char *endptr = NULL;
steplimit = strtoll(argv[1], &endptr, 10);
if (errno || (*endptr != '\0')) {
fprintf(stderr, "Usage: %s [steplimit]\n", argv[0]);
return 2;
}
}
cpu_t cpu = {.pc = 0, .sp = -1, .state = Cpu_Running,
.steps = 0, .stack = {0},
.pmem = Primes};
while (cpu.state == Cpu_Running && cpu.steps < steplimit) {
decode_t decoded = fetch_decode(&cpu);
if (cpu.state != Cpu_Running) break;
service_routines[decoded.opcode](&cpu, &decoded); /* Call the SR */
cpu.pc += decoded.length; /* Advance PC */
cpu.steps++;
}
assert(cpu.state != Cpu_Running || cpu.steps == steplimit);
/* Print CPU state */
printf("CPU executed %lld steps. End state \"%s\".\n",
cpu.steps, cpu.state == Cpu_Halted? "Halted":
cpu.state == Cpu_Running? "Running": "Break");
printf("PC = %#x, SP = %d\n", cpu.pc, cpu.sp);
printf("Stack: ");
for (int32_t i=cpu.sp; i >= 0 ; i--) {
printf("%#10x ", cpu.stack[i]);
}
printf("%s\n", cpu.sp == -1? "(empty)": "");
return cpu.state == Cpu_Halted ||
(cpu.state == Cpu_Running &&
cpu.steps == steplimit)?0:1;
}
