// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <memory>
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/object.h"
namespace Core::Frontend {
class EmuWindow;
} // namespace Core::Frontend
namespace FileSys {
class VfsFilesystem;
} // namespace FileSys
namespace Kernel {
class KernelCore;
class Process;
class Scheduler;
} // namespace Kernel
namespace Loader {
class AppLoader;
enum class ResultStatus : u16;
} // namespace Loader
namespace Service::SM {
class ServiceManager;
} // namespace Service::SM
namespace Tegra {
class DebugContext;
class GPU;
} // namespace Tegra
namespace VideoCore {
class RendererBase;
} // namespace VideoCore
namespace Core {
class ARM_Interface;
class Cpu;
class ExclusiveMonitor;
class FrameLimiter;
class PerfStats;
class TelemetrySession;
struct PerfStatsResults;
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();
/// 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;
/**
* Returns a reference to the telemetry session for this emulation session.
* @returns Reference to the telemetry session.
*/
Core::TelemetrySession& TelemetrySession() const;
/// Prepare the core emulation for a reschedule
void PrepareReschedule();
/// Gets and resets core performance statistics
PerfStatsResults GetAndResetPerfStats();
/// Gets an ARM interface to the CPU core that is currently running
ARM_Interface& CurrentArmInterface();
/// Gets the index of the currently running CPU core
size_t CurrentCoreIndex();
/// Gets the scheduler for the CPU core that is currently running
Kernel::Scheduler& CurrentScheduler();
/// 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 the exclusive monitor
ExclusiveMonitor& Monitor();
/// Gets a mutable reference to the GPU interface
Tegra::GPU& GPU();
/// Gets an immutable reference to the GPU interface.
const Tegra::GPU& GPU() const;
/// Gets a mutable reference to the renderer.
VideoCore::RendererBase& Renderer();
/// Gets an immutable reference to the renderer.
const VideoCore::RendererBase& Renderer() const;
/// Gets the scheduler for the CPU core with the specified index
const std::shared_ptr<Kernel::Scheduler>& Scheduler(size_t core_index);
/// Provides a reference to the current process
Kernel::SharedPtr<Kernel::Process>& CurrentProcess();
/// Provides a constant reference to the current process.
const Kernel::SharedPtr<Kernel::Process>& CurrentProcess() const;
/// Provides a reference to the kernel instance.
Kernel::KernelCore& Kernel();
/// Provides a constant reference to the kernel instance.
const Kernel::KernelCore& Kernel() const;
/// Provides a reference to the internal PerfStats instance.
Core::PerfStats& GetPerfStats();
/// Provides a constant reference to the internal PerfStats instance.
const Core::PerfStats& GetPerfStats() const;
/// Provides a reference to the frame limiter;
Core::FrameLimiter& FrameLimiter();
/// Provides a constant referent to the frame limiter
const Core::FrameLimiter& FrameLimiter() const;
/// Gets the name of the current game
Loader::ResultStatus GetGameName(std::string& out) const;
void SetStatus(ResultStatus new_status, const char* details);
const std::string& GetStatusDetails() const;
Loader::AppLoader& GetAppLoader() const;
Service::SM::ServiceManager& ServiceManager();
const Service::SM::ServiceManager& ServiceManager() const;
void SetGPUDebugContext(std::shared_ptr<Tegra::DebugContext> context);
Tegra::DebugContext* GetGPUDebugContext() const;
void SetFilesystem(std::shared_ptr<FileSys::VfsFilesystem> vfs);
std::shared_ptr<FileSys::VfsFilesystem> GetFilesystem() const;
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);
struct Impl;
std::unique_ptr<Impl> impl;
static System s_instance;
};
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
