diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/core.h | 148 |
1 files changed, 105 insertions, 43 deletions
diff --git a/src/core/core.h b/src/core/core.h index ffbfa91c3..1015e8847 100644 --- a/src/core/core.h +++ b/src/core/core.h @@ -5,56 +5,118 @@ #pragma once #include <memory> +#include <string> + #include "common/common_types.h" +#include "core/memory.h" +class EmuWindow; class ARM_Interface; -//////////////////////////////////////////////////////////////////////////////////////////////////// +namespace Loader { +class AppLoader; +} namespace Core { -struct ThreadContext { - u32 cpu_registers[13]; - u32 sp; - u32 lr; - u32 pc; - u32 cpsr; - u32 fpu_registers[64]; - u32 fpscr; - u32 fpexc; +class System { +public: + /** + * 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 + ErrorLoader, ///< Error loading the specified application + ErrorLoader_ErrorEncrypted, ///< Error loading the specified application due to encryption + ErrorLoader_ErrorInvalidFormat, ///< Error loading the specified application due to an + /// invalid format + ErrorVideoCore, ///< Error in the video core + }; + + /** + * 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 Number of instructions to execute. + * @return Result status, indicating whethor or not the operation succeeded. + */ + ResultStatus RunLoop(int tight_loop = 1000); + + /** + * Step the CPU one instruction + * @return Result status, indicating whethor or not the operation succeeded. + */ + ResultStatus SingleStep(); + + /// Shutdown the emulated system. + void Shutdown(); + + /** + * Load an executable application. + * @param emu_window Pointer 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(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_core != nullptr; + } + + /// Prepare the core emulation for a reschedule + void PrepareReschedule(); + + /** + * Gets a reference to the emulated CPU. + * @returns A reference to the emulated CPU. + */ + ARM_Interface& CPU() { + return *cpu_core; + } + +private: + /** + * Initialize the emulated system. + * @param emu_window Pointer to the host-system window used for video output and keyboard input. + * @param system_mode The system mode. + * @return ResultStatus code, indicating if the operation succeeded. + */ + ResultStatus Init(EmuWindow* emu_window, u32 system_mode); + + /// Reschedule the core emulation + void Reschedule(); + + /// AppLoader used to load the current executing application + std::unique_ptr<Loader::AppLoader> app_loader; + + ///< ARM11 CPU core + std::unique_ptr<ARM_Interface> cpu_core; + + /// When true, signals that a reschedule should happen + bool reschedule_pending{}; + + static System s_instance; }; -extern std::unique_ptr<ARM_Interface> g_app_core; ///< ARM11 application core -extern std::unique_ptr<ARM_Interface> g_sys_core; ///< ARM11 system (OS) core - -//////////////////////////////////////////////////////////////////////////////////////////////////// - -/// Start the core -void Start(); - -/** - * 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). - */ -void RunLoop(int tight_loop = 1000); - -/// Step the CPU one instruction -void SingleStep(); - -/// Halt the core -void Halt(const char* msg); - -/// Kill the core -void Stop(); - -/// Initialize the core -void Init(); - -/// Shutdown the core -void Shutdown(); +static ARM_Interface& CPU() { + return System::GetInstance().CPU(); +} -} // namespace +} // namespace Core |