summaryrefslogtreecommitdiffstats
path: root/src/core/core.cpp
blob: be8cf9c2bcf61061c41cb2ddd0f88d3a61e42013 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
// 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 "file_sys/vfs_real.h"
#include "video_core/video_core.h"

namespace Core {

/*static*/ System System::s_instance;

System::System() = default;

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);
    }
}

Cpu& System::CurrentCpuCore() {
    // If multicore is enabled, use host thread to figure out the current CPU core
    if (Settings::values.use_multi_core) {
        const auto& search = thread_to_cpu.find(std::this_thread::get_id());
        ASSERT(search != thread_to_cpu.end());
        ASSERT(search->second);
        return *search->second;
    }

    // Otherwise, use single-threaded mode active_core variable
    return *cpu_cores[active_core];
}

System::ResultStatus System::RunLoop(bool tight_loop) {
    status = ResultStatus::Success;

    // Update thread_to_cpu in case Core 0 is run from a different host thread
    thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0];

    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;
            }
        }
    }

    for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) {
        cpu_cores[active_core]->RunLoop(tight_loop);
        if (Settings::values.use_multi_core) {
            // Cores 1-3 are run on other threads in this mode
            break;
        }
    }

    return status;
}

System::ResultStatus System::SingleStep() {
    return RunLoop(false);
}

System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& filepath) {
    app_loader = Loader::GetLoader(std::make_shared<FileSys::RealVfsFile>(filepath));

    if (!app_loader) {
        LOG_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) {
        LOG_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) {
        LOG_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) {
        LOG_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());
}

const std::shared_ptr<Kernel::Scheduler>& System::Scheduler(size_t core_index) {
    ASSERT(core_index < NUM_CPU_CORES);
    return cpu_cores[core_index]->Scheduler();
}

ARM_Interface& System::ArmInterface(size_t core_index) {
    ASSERT(core_index < NUM_CPU_CORES);
    return cpu_cores[core_index]->ArmInterface();
}

Cpu& System::CpuCore(size_t core_index) {
    ASSERT(core_index < NUM_CPU_CORES);
    return *cpu_cores[core_index];
}

System::ResultStatus System::Init(EmuWindow& emu_window, u32 system_mode) {
    LOG_DEBUG(HW_Memory, "initialized OK");

    CoreTiming::Init();

    current_process = Kernel::Process::Create("main");

    cpu_barrier = std::make_shared<CpuBarrier>();
    cpu_exclusive_monitor = Cpu::MakeExclusiveMonitor(cpu_cores.size());
    for (size_t index = 0; index < cpu_cores.size(); ++index) {
        cpu_cores[index] = std::make_shared<Cpu>(cpu_exclusive_monitor, 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];
    if (Settings::values.use_multi_core) {
        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];
        }
    }

    LOG_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
    cpu_barrier->NotifyEnd();
    if (Settings::values.use_multi_core) {
        for (auto& thread : cpu_core_threads) {
            thread->join();
            thread.reset();
        }
    }
    thread_to_cpu.clear();
    for (auto& cpu_core : cpu_cores) {
        cpu_core.reset();
    }
    cpu_barrier.reset();

    // Close core timing
    CoreTiming::Shutdown();

    // Close app loader
    app_loader.reset();

    LOG_DEBUG(Core, "Shutdown OK");
}

Service::SM::ServiceManager& System::ServiceManager() {
    return *service_manager;
}

const Service::SM::ServiceManager& System::ServiceManager() const {
    return *service_manager;
}

} // namespace Core