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a14c88ba67
Yellow squiggly lines begone! Done automatically on .cpp files through `run-clang-tidy`, with manual corrections to the mistakes. If an import is directly used, but is technically unnecessary since it's recursively imported by something else, it is *not* removed. The tool doesn't touch .h files, so I did some of them by hand while fixing errors due to old recursive imports. Not everything is removed, but the cleanup should be substantial enough. Because this done on Linux, code that isn't used on it is mostly untouched. (Hopefully no open PR is depending on these imports...)
107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "Core/IOS/MIOS.h"
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#include <cstring>
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#include "Common/Assert.h"
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#include "Common/CommonTypes.h"
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#include "Common/FileUtil.h"
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#include "Common/Logging/Log.h"
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#include "Core/Config/MainSettings.h"
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#include "Core/ConfigManager.h"
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#include "Core/Core.h"
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#include "Core/DSPEmulator.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HW/DSP.h"
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#include "Core/HW/DVD/DVDInterface.h"
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#include "Core/HW/Memmap.h"
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#include "Core/HW/SystemTimers.h"
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#include "Core/HW/Wiimote.h"
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#include "Core/Host.h"
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#include "Core/PowerPC/PPCSymbolDB.h"
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#include "Core/PowerPC/PowerPC.h"
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#include "Core/System.h"
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namespace IOS::HLE::MIOS
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{
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static void ReinitHardware(Core::System& system)
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{
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system.SetIsWii(false);
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// IOS clears mem2 and overwrites it with pseudo-random data (for security).
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auto& memory = system.GetMemory();
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std::memset(memory.GetEXRAM(), 0, memory.GetExRamSizeReal());
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// MIOS appears to only reset the DI and the PPC.
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// HACK However, resetting DI will reset the DTK config, which is set by the system menu
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// (and not by MIOS), causing games that use DTK to break. Perhaps MIOS doesn't actually
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// reset DI fully, in such a way that the DTK config isn't cleared?
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// system.GetDVDInterface().ResetDrive(true);
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system.GetPowerPC().Reset();
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Wiimote::ResetAllWiimotes();
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// Note: this is specific to Dolphin and is required because we initialised it in Wii mode.
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auto& dsp = system.GetDSP();
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dsp.Reinit(Config::Get(Config::MAIN_DSP_HLE));
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dsp.GetDSPEmulator()->Initialize(system.IsWii(), Config::Get(Config::MAIN_DSP_THREAD));
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system.GetSystemTimers().ChangePPCClock(SystemTimers::Mode::GC);
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}
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constexpr u32 ADDRESS_INIT_SEMAPHORE = 0x30f8;
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bool Load(Core::System& system)
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{
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auto& memory = system.GetMemory();
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ASSERT(Core::IsCPUThread());
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Core::CPUThreadGuard guard(system);
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memory.Write_U32(0x00000000, ADDRESS_INIT_SEMAPHORE);
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memory.Write_U32(0x09142001, 0x3180);
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ReinitHardware(system);
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NOTICE_LOG_FMT(IOS, "Reinitialised hardware.");
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auto& power_pc = system.GetPowerPC();
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auto& ppc_symbol_db = power_pc.GetSymbolDB();
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// Load symbols for the IPL if they exist.
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bool symbols_changed = ppc_symbol_db.Clear();
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if (ppc_symbol_db.LoadMap(guard, File::GetUserPath(D_MAPS_IDX) + "mios-ipl.map"))
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{
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::HLE::Clear();
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::HLE::PatchFunctions(system);
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symbols_changed = true;
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}
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if (symbols_changed)
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Host_PPCSymbolsChanged();
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const PowerPC::CoreMode core_mode = power_pc.GetMode();
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power_pc.SetMode(PowerPC::CoreMode::Interpreter);
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PowerPC::PowerPCState& ppc_state = power_pc.GetPPCState();
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ppc_state.msr.Hex = 0;
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ppc_state.pc = 0x3400;
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power_pc.MSRUpdated();
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NOTICE_LOG_FMT(IOS, "Loaded MIOS and bootstrapped PPC.");
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// IOS writes 0 to 0x30f8 before bootstrapping the PPC. Once started, the IPL eventually writes
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// 0xdeadbeef there, then waits for it to be cleared by IOS before continuing.
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while (memory.Read_U32(ADDRESS_INIT_SEMAPHORE) != 0xdeadbeef)
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power_pc.SingleStep();
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power_pc.SetMode(core_mode);
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memory.Write_U32(0x00000000, ADDRESS_INIT_SEMAPHORE);
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NOTICE_LOG_FMT(IOS, "IPL ready.");
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system.SetIsMIOS(true);
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system.GetDVDInterface().UpdateRunningGameMetadata();
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SConfig::OnTitleDirectlyBooted(guard);
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return true;
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}
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} // namespace IOS::HLE::MIOS
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