suyu/src/core/hle/kernel/kernel.cpp

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// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
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#include <array>
#include <atomic>
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#include <bitset>
#include <functional>
#include <memory>
#include <thread>
#include <unordered_set>
#include <utility>
#include "common/assert.h"
#include "common/common_sizes.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/thread.h"
#include "common/thread_worker.h"
#include "core/arm/arm_interface.h"
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#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/cpu_manager.h"
#include "core/device_memory.h"
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#include "core/hardware_properties.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_memory_layout.h"
#include "core/hle/kernel/k_memory_manager.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_shared_memory.h"
#include "core/hle/kernel/k_slab_heap.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/service_thread.h"
#include "core/hle/kernel/svc_results.h"
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#include "core/hle/kernel/time_manager.h"
#include "core/hle/lock.h"
#include "core/hle/result.h"
#include "core/memory.h"
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MICROPROFILE_DEFINE(Kernel_SVC, "Kernel", "SVC", MP_RGB(70, 200, 70));
namespace Kernel {
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struct KernelCore::Impl {
explicit Impl(Core::System& system, KernelCore& kernel)
: time_manager{system}, global_handle_table{kernel}, system{system} {}
void SetMulticore(bool is_multicore) {
this->is_multicore = is_multicore;
}
void Initialize(KernelCore& kernel) {
global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
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RegisterHostThread();
service_thread_manager =
std::make_unique<Common::ThreadWorker>(1, "yuzu:ServiceThreadManager");
is_phantom_mode_for_singlecore = false;
InitializePhysicalCores();
InitializeSystemResourceLimit(kernel, system);
InitializeMemoryLayout();
InitializeSchedulers();
InitializeSuspendThreads();
InitializePreemption(kernel);
}
void InitializeCores() {
for (auto& core : cores) {
core.Initialize(current_process->Is64BitProcess());
}
}
void Shutdown() {
process_list.clear();
// Ensures all service threads gracefully shutdown
service_thread_manager.reset();
service_threads.clear();
next_object_id = 0;
next_kernel_process_id = Process::InitialKIPIDMin;
next_user_process_id = Process::ProcessIDMin;
next_thread_id = 1;
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for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
if (suspend_threads[i]) {
suspend_threads[i].reset();
}
}
cores.clear();
current_process = nullptr;
global_handle_table.Clear();
preemption_event = nullptr;
named_ports.clear();
exclusive_monitor.reset();
hid_shared_mem = nullptr;
font_shared_mem = nullptr;
irs_shared_mem = nullptr;
time_shared_mem = nullptr;
system_resource_limit = nullptr;
// Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
next_host_thread_id = Core::Hardware::NUM_CPU_CORES;
}
void InitializePhysicalCores() {
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exclusive_monitor =
Core::MakeExclusiveMonitor(system.Memory(), Core::Hardware::NUM_CPU_CORES);
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for (u32 i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
schedulers[i] = std::make_unique<Kernel::KScheduler>(system, i);
cores.emplace_back(i, system, *schedulers[i], interrupts);
}
}
void InitializeSchedulers() {
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for (u32 i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
cores[i].Scheduler().Initialize();
}
}
// Creates the default system resource limit
void InitializeSystemResourceLimit(KernelCore& kernel, Core::System& system) {
system_resource_limit = std::make_shared<KResourceLimit>(kernel, system);
// If setting the default system values fails, then something seriously wrong has occurred.
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ASSERT(system_resource_limit->SetLimitValue(LimitableResource::PhysicalMemory, 0x100000000)
.IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Threads, 800).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Events, 900).IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(LimitableResource::TransferMemory, 200)
.IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Sessions, 1133).IsSuccess());
// Derived from recent software updates. The kernel reserves 27MB
constexpr u64 kernel_size{0x1b00000};
if (!system_resource_limit->Reserve(LimitableResource::PhysicalMemory, kernel_size)) {
UNREACHABLE();
}
// Reserve secure applet memory, introduced in firmware 5.0.0
constexpr u64 secure_applet_memory_size{0x400000};
ASSERT(system_resource_limit->Reserve(LimitableResource::PhysicalMemory,
secure_applet_memory_size));
}
void InitializePreemption(KernelCore& kernel) {
preemption_event = Core::Timing::CreateEvent(
"PreemptionCallback", [this, &kernel](std::uintptr_t, std::chrono::nanoseconds) {
{
KScopedSchedulerLock lock(kernel);
global_scheduler_context->PreemptThreads();
}
const auto time_interval = std::chrono::nanoseconds{
Core::Timing::msToCycles(std::chrono::milliseconds(10))};
system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
});
const auto time_interval =
std::chrono::nanoseconds{Core::Timing::msToCycles(std::chrono::milliseconds(10))};
system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
}
void InitializeSuspendThreads() {
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
std::string name = "Suspend Thread Id:" + std::to_string(i);
std::function<void(void*)> init_func = Core::CpuManager::GetSuspendThreadStartFunc();
void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
auto thread_res = KThread::CreateThread(
system, ThreadType::HighPriority, std::move(name), 0, 0, 0, static_cast<u32>(i), 0,
nullptr, std::move(init_func), init_func_parameter);
suspend_threads[i] = std::move(thread_res).Unwrap();
}
}
void MakeCurrentProcess(Process* process) {
current_process = process;
if (process == nullptr) {
return;
}
const u32 core_id = GetCurrentHostThreadID();
if (core_id < Core::Hardware::NUM_CPU_CORES) {
system.Memory().SetCurrentPageTable(*process, core_id);
}
}
/// Creates a new host thread ID, should only be called by GetHostThreadId
u32 AllocateHostThreadId(std::optional<std::size_t> core_id) {
if (core_id) {
// The first for slots are reserved for CPU core threads
ASSERT(*core_id < Core::Hardware::NUM_CPU_CORES);
return static_cast<u32>(*core_id);
} else {
return next_host_thread_id++;
}
}
/// Gets the host thread ID for the caller, allocating a new one if this is the first time
u32 GetHostThreadId(std::optional<std::size_t> core_id = std::nullopt) {
const thread_local auto host_thread_id{AllocateHostThreadId(core_id)};
return host_thread_id;
}
// Gets the dummy KThread for the caller, allocating a new one if this is the first time
KThread* GetHostDummyThread() {
const thread_local auto thread =
KThread::CreateThread(
system, ThreadType::Main, fmt::format("DummyThread:{}", GetHostThreadId()), 0,
KThread::DefaultThreadPriority, 0, static_cast<u32>(3), 0, nullptr)
.Unwrap();
return thread.get();
}
/// Registers a CPU core thread by allocating a host thread ID for it
void RegisterCoreThread(std::size_t core_id) {
ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
const auto this_id = GetHostThreadId(core_id);
if (!is_multicore) {
single_core_thread_id = this_id;
}
}
/// Registers a new host thread by allocating a host thread ID for it
void RegisterHostThread() {
[[maybe_unused]] const auto this_id = GetHostThreadId();
[[maybe_unused]] const auto dummy_thread = GetHostDummyThread();
}
[[nodiscard]] u32 GetCurrentHostThreadID() {
const auto this_id = GetHostThreadId();
if (!is_multicore && single_core_thread_id == this_id) {
return static_cast<u32>(system.GetCpuManager().CurrentCore());
}
return this_id;
}
bool IsPhantomModeForSingleCore() const {
return is_phantom_mode_for_singlecore;
}
void SetIsPhantomModeForSingleCore(bool value) {
ASSERT(!is_multicore);
is_phantom_mode_for_singlecore = value;
}
KThread* GetCurrentEmuThread() {
const auto thread_id = GetCurrentHostThreadID();
if (thread_id >= Core::Hardware::NUM_CPU_CORES) {
return GetHostDummyThread();
}
return schedulers[thread_id]->GetCurrentThread();
}
void DeriveInitialMemoryLayout(KMemoryLayout& memory_layout) {
// Insert the root region for the virtual memory tree, from which all other regions will
// derive.
memory_layout.GetVirtualMemoryRegionTree().InsertDirectly(
KernelVirtualAddressSpaceBase,
KernelVirtualAddressSpaceBase + KernelVirtualAddressSpaceSize - 1);
// Insert the root region for the physical memory tree, from which all other regions will
// derive.
memory_layout.GetPhysicalMemoryRegionTree().InsertDirectly(
KernelPhysicalAddressSpaceBase,
KernelPhysicalAddressSpaceBase + KernelPhysicalAddressSpaceSize - 1);
// Save start and end for ease of use.
const VAddr code_start_virt_addr = KernelVirtualAddressCodeBase;
const VAddr code_end_virt_addr = KernelVirtualAddressCodeEnd;
// Setup the containing kernel region.
constexpr size_t KernelRegionSize = Common::Size_1_GB;
constexpr size_t KernelRegionAlign = Common::Size_1_GB;
constexpr VAddr kernel_region_start =
Common::AlignDown(code_start_virt_addr, KernelRegionAlign);
size_t kernel_region_size = KernelRegionSize;
if (!(kernel_region_start + KernelRegionSize - 1 <= KernelVirtualAddressSpaceLast)) {
kernel_region_size = KernelVirtualAddressSpaceEnd - kernel_region_start;
}
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
kernel_region_start, kernel_region_size, KMemoryRegionType_Kernel));
// Setup the code region.
constexpr size_t CodeRegionAlign = PageSize;
constexpr VAddr code_region_start =
Common::AlignDown(code_start_virt_addr, CodeRegionAlign);
constexpr VAddr code_region_end = Common::AlignUp(code_end_virt_addr, CodeRegionAlign);
constexpr size_t code_region_size = code_region_end - code_region_start;
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
code_region_start, code_region_size, KMemoryRegionType_KernelCode));
// Setup board-specific device physical regions.
Init::SetupDevicePhysicalMemoryRegions(memory_layout);
// Determine the amount of space needed for the misc region.
size_t misc_region_needed_size;
{
// Each core has a one page stack for all three stack types (Main, Idle, Exception).
misc_region_needed_size = Core::Hardware::NUM_CPU_CORES * (3 * (PageSize + PageSize));
// Account for each auto-map device.
for (const auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
if (region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
// Check that the region is valid.
ASSERT(region.GetEndAddress() != 0);
// Account for the region.
misc_region_needed_size +=
PageSize + (Common::AlignUp(region.GetLastAddress(), PageSize) -
Common::AlignDown(region.GetAddress(), PageSize));
}
}
// Multiply the needed size by three, to account for the need for guard space.
misc_region_needed_size *= 3;
}
// Decide on the actual size for the misc region.
constexpr size_t MiscRegionAlign = KernelAslrAlignment;
constexpr size_t MiscRegionMinimumSize = Common::Size_32_MB;
const size_t misc_region_size = Common::AlignUp(
std::max(misc_region_needed_size, MiscRegionMinimumSize), MiscRegionAlign);
ASSERT(misc_region_size > 0);
// Setup the misc region.
const VAddr misc_region_start =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
misc_region_size, MiscRegionAlign, KMemoryRegionType_Kernel);
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
misc_region_start, misc_region_size, KMemoryRegionType_KernelMisc));
// Setup the stack region.
constexpr size_t StackRegionSize = Common::Size_14_MB;
constexpr size_t StackRegionAlign = KernelAslrAlignment;
const VAddr stack_region_start =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
StackRegionSize, StackRegionAlign, KMemoryRegionType_Kernel);
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
stack_region_start, StackRegionSize, KMemoryRegionType_KernelStack));
// Determine the size of the resource region.
const size_t resource_region_size = memory_layout.GetResourceRegionSizeForInit();
// Determine the size of the slab region.
const size_t slab_region_size = Common::AlignUp(KernelSlabHeapSize, PageSize);
ASSERT(slab_region_size <= resource_region_size);
// Setup the slab region.
const PAddr code_start_phys_addr = KernelPhysicalAddressCodeBase;
const PAddr code_end_phys_addr = code_start_phys_addr + code_region_size;
const PAddr slab_start_phys_addr = code_end_phys_addr;
const PAddr slab_end_phys_addr = slab_start_phys_addr + slab_region_size;
constexpr size_t SlabRegionAlign = KernelAslrAlignment;
const size_t slab_region_needed_size =
Common::AlignUp(code_end_phys_addr + slab_region_size, SlabRegionAlign) -
Common::AlignDown(code_end_phys_addr, SlabRegionAlign);
const VAddr slab_region_start =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
slab_region_needed_size, SlabRegionAlign, KMemoryRegionType_Kernel) +
(code_end_phys_addr % SlabRegionAlign);
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
slab_region_start, slab_region_size, KMemoryRegionType_KernelSlab));
// Setup the temp region.
constexpr size_t TempRegionSize = Common::Size_128_MB;
constexpr size_t TempRegionAlign = KernelAslrAlignment;
const VAddr temp_region_start =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
TempRegionSize, TempRegionAlign, KMemoryRegionType_Kernel);
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(temp_region_start, TempRegionSize,
KMemoryRegionType_KernelTemp));
// Automatically map in devices that have auto-map attributes.
for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
// We only care about kernel regions.
if (!region.IsDerivedFrom(KMemoryRegionType_Kernel)) {
continue;
}
// Check whether we should map the region.
if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
continue;
}
// If this region has already been mapped, no need to consider it.
if (region.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) {
continue;
}
// Check that the region is valid.
ASSERT(region.GetEndAddress() != 0);
// Set the attribute to note we've mapped this region.
region.SetTypeAttribute(KMemoryRegionAttr_DidKernelMap);
// Create a virtual pair region and insert it into the tree.
const PAddr map_phys_addr = Common::AlignDown(region.GetAddress(), PageSize);
const size_t map_size =
Common::AlignUp(region.GetEndAddress(), PageSize) - map_phys_addr;
const VAddr map_virt_addr =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(
map_size, PageSize, KMemoryRegionType_KernelMisc, PageSize);
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
map_virt_addr, map_size, KMemoryRegionType_KernelMiscMappedDevice));
region.SetPairAddress(map_virt_addr + region.GetAddress() - map_phys_addr);
}
Init::SetupDramPhysicalMemoryRegions(memory_layout);
// Insert a physical region for the kernel code region.
ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
code_start_phys_addr, code_region_size, KMemoryRegionType_DramKernelCode));
// Insert a physical region for the kernel slab region.
ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
slab_start_phys_addr, slab_region_size, KMemoryRegionType_DramKernelSlab));
// Determine size available for kernel page table heaps, requiring > 8 MB.
const PAddr resource_end_phys_addr = slab_start_phys_addr + resource_region_size;
const size_t page_table_heap_size = resource_end_phys_addr - slab_end_phys_addr;
ASSERT(page_table_heap_size / Common::Size_4_MB > 2);
// Insert a physical region for the kernel page table heap region
ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
slab_end_phys_addr, page_table_heap_size, KMemoryRegionType_DramKernelPtHeap));
// All DRAM regions that we haven't tagged by this point will be mapped under the linear
// mapping. Tag them.
for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
if (region.GetType() == KMemoryRegionType_Dram) {
// Check that the region is valid.
ASSERT(region.GetEndAddress() != 0);
// Set the linear map attribute.
region.SetTypeAttribute(KMemoryRegionAttr_LinearMapped);
}
}
// Get the linear region extents.
const auto linear_extents =
memory_layout.GetPhysicalMemoryRegionTree().GetDerivedRegionExtents(
KMemoryRegionAttr_LinearMapped);
ASSERT(linear_extents.GetEndAddress() != 0);
// Setup the linear mapping region.
constexpr size_t LinearRegionAlign = Common::Size_1_GB;
const PAddr aligned_linear_phys_start =
Common::AlignDown(linear_extents.GetAddress(), LinearRegionAlign);
const size_t linear_region_size =
Common::AlignUp(linear_extents.GetEndAddress(), LinearRegionAlign) -
aligned_linear_phys_start;
const VAddr linear_region_start =
memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(
linear_region_size, LinearRegionAlign, KMemoryRegionType_None, LinearRegionAlign);
const u64 linear_region_phys_to_virt_diff = linear_region_start - aligned_linear_phys_start;
// Map and create regions for all the linearly-mapped data.
{
PAddr cur_phys_addr = 0;
u64 cur_size = 0;
for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
if (!region.HasTypeAttribute(KMemoryRegionAttr_LinearMapped)) {
continue;
}
ASSERT(region.GetEndAddress() != 0);
if (cur_size == 0) {
cur_phys_addr = region.GetAddress();
cur_size = region.GetSize();
} else if (cur_phys_addr + cur_size == region.GetAddress()) {
cur_size += region.GetSize();
} else {
cur_phys_addr = region.GetAddress();
cur_size = region.GetSize();
}
const VAddr region_virt_addr =
region.GetAddress() + linear_region_phys_to_virt_diff;
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
region_virt_addr, region.GetSize(),
GetTypeForVirtualLinearMapping(region.GetType())));
region.SetPairAddress(region_virt_addr);
KMemoryRegion* virt_region =
memory_layout.GetVirtualMemoryRegionTree().FindModifiable(region_virt_addr);
ASSERT(virt_region != nullptr);
virt_region->SetPairAddress(region.GetAddress());
}
}
// Insert regions for the initial page table region.
ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
resource_end_phys_addr, KernelPageTableHeapSize, KMemoryRegionType_DramKernelInitPt));
ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
resource_end_phys_addr + linear_region_phys_to_virt_diff, KernelPageTableHeapSize,
KMemoryRegionType_VirtualDramKernelInitPt));
// All linear-mapped DRAM regions that we haven't tagged by this point will be allocated to
// some pool partition. Tag them.
for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
if (region.GetType() == (KMemoryRegionType_Dram | KMemoryRegionAttr_LinearMapped)) {
region.SetType(KMemoryRegionType_DramPoolPartition);
}
}
// Setup all other memory regions needed to arrange the pool partitions.
Init::SetupPoolPartitionMemoryRegions(memory_layout);
// Cache all linear regions in their own trees for faster access, later.
memory_layout.InitializeLinearMemoryRegionTrees(aligned_linear_phys_start,
linear_region_start);
}
void InitializeMemoryLayout() {
// Derive the initial memory layout from the emulated board
KMemoryLayout memory_layout;
DeriveInitialMemoryLayout(memory_layout);
const auto system_pool = memory_layout.GetKernelSystemPoolRegionPhysicalExtents();
const auto applet_pool = memory_layout.GetKernelAppletPoolRegionPhysicalExtents();
const auto application_pool = memory_layout.GetKernelApplicationPoolRegionPhysicalExtents();
// Initialize memory managers
memory_manager = std::make_unique<KMemoryManager>();
memory_manager->InitializeManager(KMemoryManager::Pool::Application,
application_pool.GetAddress(),
application_pool.GetEndAddress());
memory_manager->InitializeManager(KMemoryManager::Pool::Applet, applet_pool.GetAddress(),
applet_pool.GetEndAddress());
memory_manager->InitializeManager(KMemoryManager::Pool::System, system_pool.GetAddress(),
system_pool.GetEndAddress());
// Setup memory regions for emulated processes
// TODO(bunnei): These should not be hardcoded regions initialized within the kernel
constexpr std::size_t hid_size{0x40000};
constexpr std::size_t font_size{0x1100000};
constexpr std::size_t irs_size{0x8000};
constexpr std::size_t time_size{0x1000};
const PAddr hid_phys_addr{system_pool.GetAddress()};
const PAddr font_phys_addr{system_pool.GetAddress() + hid_size};
const PAddr irs_phys_addr{system_pool.GetAddress() + hid_size + font_size};
const PAddr time_phys_addr{system_pool.GetAddress() + hid_size + font_size + irs_size};
hid_shared_mem = Kernel::KSharedMemory::Create(
system.Kernel(), system.DeviceMemory(), nullptr, {hid_phys_addr, hid_size / PageSize},
KMemoryPermission::None, KMemoryPermission::Read, hid_phys_addr, hid_size,
"HID:SharedMemory");
font_shared_mem = Kernel::KSharedMemory::Create(
system.Kernel(), system.DeviceMemory(), nullptr, {font_phys_addr, font_size / PageSize},
KMemoryPermission::None, KMemoryPermission::Read, font_phys_addr, font_size,
"Font:SharedMemory");
irs_shared_mem = Kernel::KSharedMemory::Create(
system.Kernel(), system.DeviceMemory(), nullptr, {irs_phys_addr, irs_size / PageSize},
KMemoryPermission::None, KMemoryPermission::Read, irs_phys_addr, irs_size,
"IRS:SharedMemory");
time_shared_mem = Kernel::KSharedMemory::Create(
system.Kernel(), system.DeviceMemory(), nullptr, {time_phys_addr, time_size / PageSize},
KMemoryPermission::None, KMemoryPermission::Read, time_phys_addr, time_size,
"Time:SharedMemory");
// Allocate slab heaps
user_slab_heap_pages = std::make_unique<KSlabHeap<Page>>();
constexpr u64 user_slab_heap_size{0x1ef000};
// Reserve slab heaps
ASSERT(
system_resource_limit->Reserve(LimitableResource::PhysicalMemory, user_slab_heap_size));
// Initialize slab heaps
user_slab_heap_pages->Initialize(
system.DeviceMemory().GetPointer(Core::DramMemoryMap::SlabHeapBase),
user_slab_heap_size);
}
std::atomic<u32> next_object_id{0};
std::atomic<u64> next_kernel_process_id{Process::InitialKIPIDMin};
std::atomic<u64> next_user_process_id{Process::ProcessIDMin};
std::atomic<u64> next_thread_id{1};
// Lists all processes that exist in the current session.
std::vector<std::shared_ptr<Process>> process_list;
Process* current_process = nullptr;
std::unique_ptr<Kernel::GlobalSchedulerContext> global_scheduler_context;
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Kernel::TimeManager time_manager;
std::shared_ptr<KResourceLimit> system_resource_limit;
std::shared_ptr<Core::Timing::EventType> preemption_event;
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// This is the kernel's handle table or supervisor handle table which
// stores all the objects in place.
HandleTable global_handle_table;
/// Map of named ports managed by the kernel, which can be retrieved using
/// the ConnectToPort SVC.
NamedPortTable named_ports;
std::unique_ptr<Core::ExclusiveMonitor> exclusive_monitor;
std::vector<Kernel::PhysicalCore> cores;
// Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
std::atomic<u32> next_host_thread_id{Core::Hardware::NUM_CPU_CORES};
// Kernel memory management
std::unique_ptr<KMemoryManager> memory_manager;
std::unique_ptr<KSlabHeap<Page>> user_slab_heap_pages;
// Shared memory for services
std::shared_ptr<Kernel::KSharedMemory> hid_shared_mem;
std::shared_ptr<Kernel::KSharedMemory> font_shared_mem;
std::shared_ptr<Kernel::KSharedMemory> irs_shared_mem;
std::shared_ptr<Kernel::KSharedMemory> time_shared_mem;
// Threads used for services
std::unordered_set<std::shared_ptr<Kernel::ServiceThread>> service_threads;
// Service threads are managed by a worker thread, so that a calling service thread can queue up
// the release of itself
std::unique_ptr<Common::ThreadWorker> service_thread_manager;
std::array<std::shared_ptr<KThread>, Core::Hardware::NUM_CPU_CORES> suspend_threads{};
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std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
bool is_multicore{};
bool is_phantom_mode_for_singlecore{};
u32 single_core_thread_id{};
std::array<u64, Core::Hardware::NUM_CPU_CORES> svc_ticks{};
// System context
Core::System& system;
};
KernelCore::KernelCore(Core::System& system) : impl{std::make_unique<Impl>(system, *this)} {}
KernelCore::~KernelCore() {
Shutdown();
}
void KernelCore::SetMulticore(bool is_multicore) {
impl->SetMulticore(is_multicore);
}
void KernelCore::Initialize() {
impl->Initialize(*this);
}
void KernelCore::InitializeCores() {
impl->InitializeCores();
}
void KernelCore::Shutdown() {
impl->Shutdown();
}
std::shared_ptr<KResourceLimit> KernelCore::GetSystemResourceLimit() const {
return impl->system_resource_limit;
}
std::shared_ptr<KThread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
return impl->global_handle_table.Get<KThread>(handle);
}
void KernelCore::AppendNewProcess(std::shared_ptr<Process> process) {
impl->process_list.push_back(std::move(process));
}
void KernelCore::MakeCurrentProcess(Process* process) {
impl->MakeCurrentProcess(process);
}
Process* KernelCore::CurrentProcess() {
return impl->current_process;
}
const Process* KernelCore::CurrentProcess() const {
return impl->current_process;
}
const std::vector<std::shared_ptr<Process>>& KernelCore::GetProcessList() const {
return impl->process_list;
}
Kernel::GlobalSchedulerContext& KernelCore::GlobalSchedulerContext() {
return *impl->global_scheduler_context;
}
const Kernel::GlobalSchedulerContext& KernelCore::GlobalSchedulerContext() const {
return *impl->global_scheduler_context;
}
Kernel::KScheduler& KernelCore::Scheduler(std::size_t id) {
return *impl->schedulers[id];
}
const Kernel::KScheduler& KernelCore::Scheduler(std::size_t id) const {
return *impl->schedulers[id];
}
Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) {
return impl->cores[id];
}
const Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) const {
return impl->cores[id];
}
Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() {
u32 core_id = impl->GetCurrentHostThreadID();
ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
return impl->cores[core_id];
}
const Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() const {
u32 core_id = impl->GetCurrentHostThreadID();
ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
return impl->cores[core_id];
}
Kernel::KScheduler* KernelCore::CurrentScheduler() {
u32 core_id = impl->GetCurrentHostThreadID();
if (core_id >= Core::Hardware::NUM_CPU_CORES) {
// This is expected when called from not a guest thread
return {};
}
return impl->schedulers[core_id].get();
}
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& KernelCore::Interrupts() {
return impl->interrupts;
}
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const std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& KernelCore::Interrupts()
const {
return impl->interrupts;
}
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Kernel::TimeManager& KernelCore::TimeManager() {
return impl->time_manager;
}
const Kernel::TimeManager& KernelCore::TimeManager() const {
return impl->time_manager;
}
Core::ExclusiveMonitor& KernelCore::GetExclusiveMonitor() {
return *impl->exclusive_monitor;
}
const Core::ExclusiveMonitor& KernelCore::GetExclusiveMonitor() const {
return *impl->exclusive_monitor;
}
void KernelCore::InvalidateAllInstructionCaches() {
for (auto& physical_core : impl->cores) {
physical_core.ArmInterface().ClearInstructionCache();
}
}
void KernelCore::InvalidateCpuInstructionCacheRange(VAddr addr, std::size_t size) {
for (auto& physical_core : impl->cores) {
if (!physical_core.IsInitialized()) {
continue;
}
physical_core.ArmInterface().InvalidateCacheRange(addr, size);
}
}
void KernelCore::PrepareReschedule(std::size_t id) {
// TODO: Reimplement, this
}
void KernelCore::AddNamedPort(std::string name, std::shared_ptr<ClientPort> port) {
impl->named_ports.emplace(std::move(name), std::move(port));
}
KernelCore::NamedPortTable::iterator KernelCore::FindNamedPort(const std::string& name) {
return impl->named_ports.find(name);
}
KernelCore::NamedPortTable::const_iterator KernelCore::FindNamedPort(
const std::string& name) const {
return impl->named_ports.find(name);
}
bool KernelCore::IsValidNamedPort(NamedPortTable::const_iterator port) const {
return port != impl->named_ports.cend();
}
u32 KernelCore::CreateNewObjectID() {
return impl->next_object_id++;
}
u64 KernelCore::CreateNewThreadID() {
return impl->next_thread_id++;
}
u64 KernelCore::CreateNewKernelProcessID() {
return impl->next_kernel_process_id++;
}
u64 KernelCore::CreateNewUserProcessID() {
return impl->next_user_process_id++;
}
Kernel::HandleTable& KernelCore::GlobalHandleTable() {
return impl->global_handle_table;
}
const Kernel::HandleTable& KernelCore::GlobalHandleTable() const {
return impl->global_handle_table;
}
void KernelCore::RegisterCoreThread(std::size_t core_id) {
impl->RegisterCoreThread(core_id);
}
void KernelCore::RegisterHostThread() {
impl->RegisterHostThread();
}
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u32 KernelCore::GetCurrentHostThreadID() const {
return impl->GetCurrentHostThreadID();
}
KThread* KernelCore::GetCurrentEmuThread() const {
return impl->GetCurrentEmuThread();
}
KMemoryManager& KernelCore::MemoryManager() {
return *impl->memory_manager;
}
const KMemoryManager& KernelCore::MemoryManager() const {
return *impl->memory_manager;
}
KSlabHeap<Page>& KernelCore::GetUserSlabHeapPages() {
return *impl->user_slab_heap_pages;
}
const KSlabHeap<Page>& KernelCore::GetUserSlabHeapPages() const {
return *impl->user_slab_heap_pages;
}
Kernel::KSharedMemory& KernelCore::GetHidSharedMem() {
return *impl->hid_shared_mem;
}
const Kernel::KSharedMemory& KernelCore::GetHidSharedMem() const {
return *impl->hid_shared_mem;
}
Kernel::KSharedMemory& KernelCore::GetFontSharedMem() {
return *impl->font_shared_mem;
}
const Kernel::KSharedMemory& KernelCore::GetFontSharedMem() const {
return *impl->font_shared_mem;
}
Kernel::KSharedMemory& KernelCore::GetIrsSharedMem() {
return *impl->irs_shared_mem;
}
const Kernel::KSharedMemory& KernelCore::GetIrsSharedMem() const {
return *impl->irs_shared_mem;
}
Kernel::KSharedMemory& KernelCore::GetTimeSharedMem() {
return *impl->time_shared_mem;
}
const Kernel::KSharedMemory& KernelCore::GetTimeSharedMem() const {
return *impl->time_shared_mem;
}
void KernelCore::Suspend(bool in_suspention) {
const bool should_suspend = exception_exited || in_suspention;
{
KScopedSchedulerLock lock(*this);
const auto state = should_suspend ? ThreadState::Runnable : ThreadState::Waiting;
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
impl->suspend_threads[i]->SetState(state);
impl->suspend_threads[i]->SetWaitReasonForDebugging(
ThreadWaitReasonForDebugging::Suspended);
}
}
}
bool KernelCore::IsMulticore() const {
return impl->is_multicore;
}
void KernelCore::ExceptionalExit() {
exception_exited = true;
Suspend(true);
}
void KernelCore::EnterSVCProfile() {
std::size_t core = impl->GetCurrentHostThreadID();
impl->svc_ticks[core] = MicroProfileEnter(MICROPROFILE_TOKEN(Kernel_SVC));
}
void KernelCore::ExitSVCProfile() {
std::size_t core = impl->GetCurrentHostThreadID();
MicroProfileLeave(MICROPROFILE_TOKEN(Kernel_SVC), impl->svc_ticks[core]);
}
std::weak_ptr<Kernel::ServiceThread> KernelCore::CreateServiceThread(const std::string& name) {
auto service_thread = std::make_shared<Kernel::ServiceThread>(*this, 1, name);
impl->service_thread_manager->QueueWork(
[this, service_thread] { impl->service_threads.emplace(service_thread); });
return service_thread;
}
void KernelCore::ReleaseServiceThread(std::weak_ptr<Kernel::ServiceThread> service_thread) {
impl->service_thread_manager->QueueWork([this, service_thread] {
if (auto strong_ptr = service_thread.lock()) {
impl->service_threads.erase(strong_ptr);
}
});
}
bool KernelCore::IsPhantomModeForSingleCore() const {
return impl->IsPhantomModeForSingleCore();
}
void KernelCore::SetIsPhantomModeForSingleCore(bool value) {
impl->SetIsPhantomModeForSingleCore(value);
}
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} // namespace Kernel