#include "asm.h"
#include "tpu.h"
#include "util.h"

#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

static struct tis tis;

int (*cleanup)(void) = NULL;
const char *progname = "tis100";

static bool
io_active(struct tis *tis)
{
	struct tpu_io_port *io_port;
	int i;

	for (i = 0; i < TIS_MAX_IO_PORTS; i++) {
		io_port = tis->in_ports[i];
		if (!io_port || !io_port->file) continue;
		if (io_port->port.attached && !io_port->port.writing
				&& !feof(io_port->file))
			return true;
	}

	return false;
}

int
main(int argc, const char **argv)
{
	struct tis_stats stats;
	bool idle, prev_idle;

	if (argc < 2) {
		fprintf(stderr, "Usage: tis100 FILE [IO..]\n");
		exit(1);
	}

	tis_init(&tis);

	tis_load(&tis, argv);

	idle = false;
	while (!idle || !prev_idle || io_active(&tis)) {
		prev_idle = idle;
		idle = !tis_step(&tis);
	}

	if (tis.show_stats) {
		stats = tis_gen_stats(&tis);
		printf("=== stats ===\n");
		printf(" cycles: %zu\n", stats.steps);
		printf(" nodes: %zu\n", stats.nodes);
		printf(" insts: %zu\n", stats.insts);
		printf(" idle: %2.1f%%\n", stats.idle * 100);
		printf("=============\n");
	}

	tis_deinit(&tis);
}