main.cpp

#include <iostream>
#include <memory>
#include <fstream>
#include <string>
#include <cinttypes>

#include "src/lc3.hpp"
#include "src/devices/memory.hpp"
#include "src/devices/iodevice.hpp"


std::vector<uint16_t> loadBinary(std::string filename)
{
	std::ifstream input(filename, std::ios::binary);

	std::vector<char> bytes(
		std::istreambuf_iterator<char>(input),
		(std::istreambuf_iterator<char>())
		);
	input.close();

	std::vector<uint16_t> result(bytes.size() / 2);

	for (size_t i = 0; i < bytes.size() - 1; i += 2)
		result.push_back((bytes[i + 1] << 8) | bytes[i]);

	return result;
}


int main(int argc, char** argv)
{
	if (argc < 2) {
		std::cout << "Error: required path to programm to execute as first argument.\n";
		return 1;
	}

	std::vector<uint16_t> program;
	try {
		program = loadBinary(argv[1]);
	} 
	catch(const std::ifstream::failure&) {
		std::cout << "Error: exception while opening file with path : \'" << argv[1] << "\'.\n";
		return 1;
	}

	auto memory = std::make_shared<lc3::Memory>(program.data(), program.size());
	auto io = std::make_shared<lc3::IODevice>();

	lc3::LC3 cpu(
		std::move(memory),
		std::move(io)
		);
	cpu.run();

	return 0;
}