// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <map>
#include <memory>
#include <string>
#include <thread>
#include "common/common_types.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core_cpu.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/scheduler.h"
#include "core/loader/loader.h"
#include "core/memory.h"
#include "core/perf_stats.h"
#include "core/telemetry_session.h"
#include "file_sys/vfs_real.h"
#include "hle/service/filesystem/filesystem.h"
#include "video_core/debug_utils/debug_utils.h"
#include "video_core/gpu.h"
namespace Core::Frontend {
class EmuWindow;
}
namespace Service::SM {
class ServiceManager;
}
namespace VideoCore {
class RendererBase;
}
namespace Core {
class ARM_Interface;
class System {
public:
System(const System&) = delete;
System& operator=(const System&) = delete;
System(System&&) = delete;
System& operator=(System&&) = delete;
~System();
/**
* Gets the instance of the System singleton class.
* @returns Reference to the instance of the System singleton class.
*/
static System& GetInstance() {
return s_instance;
}
/// Enumeration representing the return values of the System Initialize and Load process.
enum class ResultStatus : u32 {
Success, ///< Succeeded
ErrorNotInitialized, ///< Error trying to use core prior to initialization
ErrorGetLoader, ///< Error finding the correct application loader
ErrorSystemMode, ///< Error determining the system mode
ErrorSystemFiles, ///< Error in finding system files
ErrorSharedFont, ///< Error in finding shared font
ErrorVideoCore, ///< Error in the video core
ErrorUnknown, ///< Any other error
ErrorLoader, ///< The base for loader errors (too many to repeat)
};
/**
* Run the core CPU loop
* This function runs the core for the specified number of CPU instructions before trying to
* update hardware. This is much faster than SingleStep (and should be equivalent), as the CPU
* is not required to do a full dispatch with each instruction. NOTE: the number of instructions
* requested is not guaranteed to run, as this will be interrupted preemptively if a hardware
* update is requested (e.g. on a thread switch).
* @param tight_loop If false, the CPU single-steps.
* @return Result status, indicating whether or not the operation succeeded.
*/
ResultStatus RunLoop(bool tight_loop = true);
/**
* Step the CPU one instruction
* @return Result status, indicating whether or not the operation succeeded.
*/
ResultStatus SingleStep();
/**
* Invalidate the CPU instruction caches
* This function should only be used by GDB Stub to support breakpoints, memory updates and
* step/continue commands.
*/
void InvalidateCpuInstructionCaches() {
for (auto& cpu : cpu_cores) {
cpu->ArmInterface().ClearInstructionCache();
}
}
/// Shutdown the emulated system.
void Shutdown();
/**
* Load an executable application.
* @param emu_window Reference to the host-system window used for video output and keyboard
* input.
* @param filepath String path to the executable application to load on the host file system.
* @returns ResultStatus code, indicating if the operation succeeded.
*/
ResultStatus Load(Frontend::EmuWindow& emu_window, const std::string& filepath);
/**
* Indicates if the emulated system is powered on (all subsystems initialized and able to run an
* application).
* @returns True if the emulated system is powered on, otherwise false.
*/
bool IsPoweredOn() const {
return cpu_barrier && cpu_barrier->IsAlive();
}
/**
* Returns a reference to the telemetry session for this emulation session.
* @returns Reference to the telemetry session.
*/
Core::TelemetrySession& TelemetrySession() const {
return *telemetry_session;
}
/// Prepare the core emulation for a reschedule
void PrepareReschedule();
/// Gets and resets core performance statistics
PerfStats::Results GetAndResetPerfStats();
/// Gets an ARM interface to the CPU core that is currently running
ARM_Interface& CurrentArmInterface() {
return CurrentCpuCore().ArmInterface();
}
/// Gets the index of the currently running CPU core
size_t CurrentCoreIndex() {
return CurrentCpuCore().CoreIndex();
}
/// Gets an ARM interface to the CPU core with the specified index
ARM_Interface& ArmInterface(size_t core_index);
/// Gets a CPU interface to the CPU core with the specified index
Cpu& CpuCore(size_t core_index);
/// Gets a mutable reference to the GPU interface
Tegra::GPU& GPU() {
return *gpu_core;
}
/// Gets an immutable reference to the GPU interface.
const Tegra::GPU& GPU() const {
return *gpu_core;
}
/// Gets a mutable reference to the renderer.
VideoCore::RendererBase& Renderer() {
return *renderer;
}
/// Gets an immutable reference to the renderer.
const VideoCore::RendererBase& Renderer() const {
return *renderer;
}
/// Gets the scheduler for the CPU core that is currently running
Kernel::Scheduler& CurrentScheduler() {
return *CurrentCpuCore().Scheduler();
}
/// Gets the exclusive monitor
ExclusiveMonitor& Monitor() {
return *cpu_exclusive_monitor;
}
/// Gets the scheduler for the CPU core with the specified index
const std::shared_ptr<Kernel::Scheduler>& Scheduler(size_t core_index);
/// Gets the current process
Kernel::SharedPtr<Kernel::Process>& CurrentProcess() {
return current_process;
}
/// Gets the name of the current game
Loader::ResultStatus GetGameName(std::string& out) const {
if (app_loader == nullptr)
return Loader::ResultStatus::ErrorNotInitialized;
return app_loader->ReadTitle(out);
}
PerfStats perf_stats;
FrameLimiter frame_limiter;
void SetStatus(ResultStatus new_status, const char* details = nullptr) {
status = new_status;
if (details) {
status_details = details;
}
}
const std::string& GetStatusDetails() const {
return status_details;
}
Loader::AppLoader& GetAppLoader() const {
return *app_loader;
}
Service::SM::ServiceManager& ServiceManager();
const Service::SM::ServiceManager& ServiceManager() const;
void SetGPUDebugContext(std::shared_ptr<Tegra::DebugContext> context) {
debug_context = std::move(context);
}
std::shared_ptr<Tegra::DebugContext> GetGPUDebugContext() const {
return debug_context;
}
void SetFilesystem(FileSys::VirtualFilesystem vfs) {
virtual_filesystem = std::move(vfs);
}
FileSys::VirtualFilesystem GetFilesystem() const {
return virtual_filesystem;
}
private:
System();
/// Returns the currently running CPU core
Cpu& CurrentCpuCore();
/**
* Initialize the emulated system.
* @param emu_window Reference to the host-system window used for video output and keyboard
* input.
* @return ResultStatus code, indicating if the operation succeeded.
*/
ResultStatus Init(Frontend::EmuWindow& emu_window);
/// RealVfsFilesystem instance
FileSys::VirtualFilesystem virtual_filesystem;
/// AppLoader used to load the current executing application
std::unique_ptr<Loader::AppLoader> app_loader;
std::unique_ptr<VideoCore::RendererBase> renderer;
std::unique_ptr<Tegra::GPU> gpu_core;
std::shared_ptr<Tegra::DebugContext> debug_context;
Kernel::SharedPtr<Kernel::Process> current_process;
std::shared_ptr<ExclusiveMonitor> cpu_exclusive_monitor;
std::shared_ptr<CpuBarrier> cpu_barrier;
std::array<std::shared_ptr<Cpu>, NUM_CPU_CORES> cpu_cores;
std::array<std::unique_ptr<std::thread>, NUM_CPU_CORES - 1> cpu_core_threads;
size_t active_core{}; ///< Active core, only used in single thread mode
/// Service manager
std::shared_ptr<Service::SM::ServiceManager> service_manager;
/// Telemetry session for this emulation session
std::unique_ptr<Core::TelemetrySession> telemetry_session;
static System s_instance;
ResultStatus status = ResultStatus::Success;
std::string status_details = "";
/// Map of guest threads to CPU cores
std::map<std::thread::id, std::shared_ptr<Cpu>> thread_to_cpu;
};
inline ARM_Interface& CurrentArmInterface() {
return System::GetInstance().CurrentArmInterface();
}
inline TelemetrySession& Telemetry() {
return System::GetInstance().TelemetrySession();
}
inline Kernel::SharedPtr<Kernel::Process>& CurrentProcess() {
return System::GetInstance().CurrentProcess();
}
} // namespace Core
