initial commit

main.cpp

@@ -0,0 +1,75 @@
+#include "Bus.h"
+#include "cpu.h"
+
+#include "spdlog/spdlog.h"
+#include "spdlog/sinks/rotating_file_sink.h"
+
+#include "CLI11/include/CLI/CLI.hpp"
+
+Bus* g_bus;
+
+IMemoryAccessor* g_cpuMemory;
+CPU* g_cpu;
+
+Cartridge* g_cartridge;
+
+std::shared_ptr<spdlog::logger> gLogger;
+spdlog::logger* Logger() { return gLogger.get(); }
+
+void initLogger()
+{
+    constexpr static std::size_t MAX_LOG_SIZE = 1048576 * 5;
+    constexpr static std::size_t MAX_LOG_FILES = 10;
+
+    gLogger = spdlog::rotating_logger_mt("bear", "logs/bear.log", MAX_LOG_SIZE, MAX_LOG_FILES);
+}
+
+int main(int argc, char** argv)
+{
+    initLogger();
+    Logger()->info("Bear started...");
+
+    CLI::App args { "A NES Emulator" };
+    argv = args.ensure_utf8(argv);
+
+    std::string filename;
+    args.add_option("-f, --file", filename, ".nes ROM file to load");
+
+    CLI11_PARSE(args, argc, argv);
+
+    if (filename.empty())
+    {
+        Logger()->error("ROM file not specified");
+        exit(-1);
+    }
+
+    std::ifstream romFile(filename.c_str(), std::ios::binary);
+    if (!romFile.is_open())
+    {
+        Logger()->error("Could not open ROM file");
+        exit(-1);
+    }
+
+    romFile.seekg(0, std::ios::end);
+    const std::streamsize romFileSize = romFile.tellg();
+    romFile.seekg(0, std::ios::beg);
+
+    auto* rom = new std::byte[romFileSize];
+
+    if (!romFile.read(reinterpret_cast<char*>(rom), romFileSize))
+    {
+        Logger()->error("Could not read ROM file");
+        exit(-1);
+    }
+
+    g_cartridge = new Cartridge(rom);
+    g_bus->cartridge = g_cartridge;
+
+    g_cpuMemory = new CPUMemoryAccessor(g_bus);
+    g_cpu = new CPU(g_cpuMemory);
+    g_bus->cpu = g_cpu;
+
+    g_cpu->start();
+
+    return 0;
+}