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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <utility>
#include "common/logging/log.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/service/service.h"
#include "core/hle/service/sm/controller.h"
#include "core/hle/service/sm/sm.h"
#include "core/hw/hw.h"
#include "core/loader/loader.h"
#include "core/memory_setup.h"
#include "core/settings.h"
#include "video_core/video_core.h"
namespace Core {
/*static*/ System System::s_instance;
System::~System() = default;
/// Runs a CPU core while the system is powered on
static void RunCpuCore(std::shared_ptr<Cpu> cpu_state) {
while (Core::System().GetInstance().IsPoweredOn()) {
cpu_state->RunLoop(true);
}
}
System::ResultStatus System::RunLoop(bool tight_loop) {
status = ResultStatus::Success;
if (GDBStub::IsServerEnabled()) {
GDBStub::HandlePacket();
// If the loop is halted and we want to step, use a tiny (1) number of instructions to
// execute. Otherwise, get out of the loop function.
if (GDBStub::GetCpuHaltFlag()) {
if (GDBStub::GetCpuStepFlag()) {
GDBStub::SetCpuStepFlag(false);
tight_loop = false;
} else {
return ResultStatus::Success;
}
}
}
cpu_cores[0]->RunLoop(tight_loop);
return status;
}
System::ResultStatus System::SingleStep() {
return RunLoop(false);
}
System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& filepath) {
app_loader = Loader::GetLoader(filepath);
if (!app_loader) {
NGLOG_CRITICAL(Core, "Failed to obtain loader for {}!", filepath);
return ResultStatus::ErrorGetLoader;
}
std::pair<boost::optional<u32>, Loader::ResultStatus> system_mode =
app_loader->LoadKernelSystemMode();
if (system_mode.second != Loader::ResultStatus::Success) {
NGLOG_CRITICAL(Core, "Failed to determine system mode (Error {})!",
static_cast<int>(system_mode.second));
switch (system_mode.second) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:
return ResultStatus::ErrorUnsupportedArch;
default:
return ResultStatus::ErrorSystemMode;
}
}
ResultStatus init_result{Init(emu_window, system_mode.first.get())};
if (init_result != ResultStatus::Success) {
NGLOG_CRITICAL(Core, "Failed to initialize system (Error {})!",
static_cast<int>(init_result));
System::Shutdown();
return init_result;
}
const Loader::ResultStatus load_result{app_loader->Load(current_process)};
if (Loader::ResultStatus::Success != load_result) {
NGLOG_CRITICAL(Core, "Failed to load ROM (Error {})!", static_cast<int>(load_result));
System::Shutdown();
switch (load_result) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:
return ResultStatus::ErrorUnsupportedArch;
default:
return ResultStatus::ErrorLoader;
}
}
status = ResultStatus::Success;
return status;
}
void System::PrepareReschedule() {
CurrentCpuCore().PrepareReschedule();
}
PerfStats::Results System::GetAndResetPerfStats() {
return perf_stats.GetAndResetStats(CoreTiming::GetGlobalTimeUs());
}
System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
NGLOG_DEBUG(HW_Memory, "initialized OK");
CoreTiming::Init();
current_process = Kernel::Process::Create("main");
cpu_barrier = std::make_shared<CpuBarrier>();
for (size_t index = 0; index < cpu_cores.size(); ++index) {
cpu_cores[index] = std::make_shared<Cpu>(cpu_barrier, index);
}
gpu_core = std::make_unique<Tegra::GPU>();
telemetry_session = std::make_unique<Core::TelemetrySession>();
service_manager = std::make_shared<Service::SM::ServiceManager>();
HW::Init();
Kernel::Init(system_mode);
Service::Init(service_manager);
GDBStub::Init();
if (!VideoCore::Init(emu_window)) {
return ResultStatus::ErrorVideoCore;
}
// Create threads for CPU cores 1-3, and build thread_to_cpu map
// CPU core 0 is run on the main thread
thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0];
for (size_t index = 0; index < cpu_core_threads.size(); ++index) {
cpu_core_threads[index] = std::make_unique<std::thread>(RunCpuCore, cpu_cores[index + 1]);
thread_to_cpu[cpu_core_threads[index]->get_id()] = cpu_cores[index + 1];
}
NGLOG_DEBUG(Core, "Initialized OK");
// Reset counters and set time origin to current frame
GetAndResetPerfStats();
perf_stats.BeginSystemFrame();
return ResultStatus::Success;
}
void System::Shutdown() {
// Log last frame performance stats
auto perf_results = GetAndResetPerfStats();
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_EmulationSpeed",
perf_results.emulation_speed * 100.0);
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_Framerate",
perf_results.game_fps);
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_Frametime",
perf_results.frametime * 1000.0);
// Shutdown emulation session
VideoCore::Shutdown();
GDBStub::Shutdown();
Service::Shutdown();
Kernel::Shutdown();
HW::Shutdown();
service_manager.reset();
telemetry_session.reset();
gpu_core.reset();
// Close all CPU/threading state
thread_to_cpu.clear();
for (auto& cpu_core : cpu_cores) {
cpu_core.reset();
}
for (auto& thread : cpu_core_threads) {
thread->join();
thread.reset();
}
CoreTiming::Shutdown();
app_loader.reset();
NGLOG_DEBUG(Core, "Shutdown OK");
}
Service::SM::ServiceManager& System::ServiceManager() {
return *service_manager;
}
const Service::SM::ServiceManager& System::ServiceManager() const {
return *service_manager;
}
} // namespace Core
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