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citra/src/core/hle/kernel/svc.cpp
PabloMK7 9c6035f254
Implement svcGetHandleInfo, svcOpenProcess/Thread, svcGetProcessList (#6243) 
* Implement svcGetHandleInfo, svcOpenProcess/Thread, svcGetProcessList

* Apply suggestions

* Add comment to stubbed enum values in svcGetHandleInfo

* Revert u32 -> size_t
2023-01-15 21:50:54 +05:30

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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <cinttypes>
#include <map>
#include <fmt/format.h>
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/scm_rev.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/address_arbiter.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/ipc.h"
#include "core/hle/kernel/ipc_debugger/recorder.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/kernel/semaphore.h"
#include "core/hle/kernel/server_port.h"
#include "core/hle/kernel/server_session.h"
#include "core/hle/kernel/session.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/kernel/svc.h"
#include "core/hle/kernel/svc_wrapper.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/timer.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/hle/kernel/wait_object.h"
#include "core/hle/lock.h"
#include "core/hle/result.h"
#include "core/hle/service/plgldr/plgldr.h"
#include "core/hle/service/service.h"
namespace Kernel {
enum ControlMemoryOperation {
MEMOP_FREE = 1,
MEMOP_RESERVE = 2, // This operation seems to be unsupported in the kernel
MEMOP_COMMIT = 3,
MEMOP_MAP = 4,
MEMOP_UNMAP = 5,
MEMOP_PROTECT = 6,
MEMOP_OPERATION_MASK = 0xFF,
MEMOP_REGION_APP = 0x100,
MEMOP_REGION_SYSTEM = 0x200,
MEMOP_REGION_BASE = 0x300,
MEMOP_REGION_MASK = 0xF00,
MEMOP_LINEAR = 0x10000,
};
struct MemoryInfo {
u32 base_address;
u32 size;
u32 permission;
u32 state;
};
/// Values accepted by svcKernelSetState, only the known values are listed
/// (the behaviour of other values are known, but their purpose is unclear and irrelevant).
enum class KernelState {
/**
* Reboots the console
*/
KERNEL_STATE_REBOOT = 7,
};
struct PageInfo {
u32 flags;
};
// Values accepted by svcGetHandleInfo.
enum class HandleInfoType {
/**
* Returns the time in ticks the KProcess referenced by the handle was created.
*/
KPROCESS_ELAPSED_TICKS = 0,
/**
* Get internal refcount for kernel object.
*/
REFERENCE_COUNT = 1,
STUBBED_1 = 2,
STUBBED_2 = 0x32107,
};
/// Values accepted by svcGetSystemInfo's type parameter.
enum class SystemInfoType {
/**
* Reports total used memory for all regions or a specific one, according to the extra
* parameter. See `SystemInfoMemUsageRegion`.
*/
REGION_MEMORY_USAGE = 0,
/**
* Returns the memory usage for certain allocations done internally by the kernel.
*/
KERNEL_ALLOCATED_PAGES = 2,
/**
* "This returns the total number of processes which were launched directly by the kernel.
* For the ARM11 NATIVE_FIRM kernel, this is 5, for processes sm, fs, pm, loader, and pxi."
*/
KERNEL_SPAWNED_PIDS = 26,
/**
* Check if the current system is a new 3DS. This parameter is not available on real systems,
* but can be used by homebrew applications.
*/
NEW_3DS_INFO = 0x10001,
/**
* Gets citra related information. This parameter is not available on real systems,
* but can be used by homebrew applications to get some emulator info.
*/
CITRA_INFORMATION = 0x20000,
};
enum class ProcessInfoType {
/**
* Returns the amount of private (code, data, regular heap) and shared memory used by the
* process + total supervisor-mode stack size + page-rounded size of the external handle table.
* This is the amount of physical memory the process is using, minus TLS, main thread stack and
* linear memory.
*/
PRIVATE_AND_SHARED_USED_MEMORY = 0,
/**
* Returns the amount of <related unused field> + total supervisor-mode stack size +
* page-rounded size of the external handle table.
*/
SUPERVISOR_AND_HANDLE_USED_MEMORY = 1,
/**
* Returns the amount of private (code, data, heap) memory used by the process + total
* supervisor-mode stack size + page-rounded size of the external handle table.
*/
PRIVATE_SHARED_SUPERVISOR_HANDLE_USED_MEMORY = 2,
/**
* Returns the amount of <related unused field> + total supervisor-mode stack size +
* page-rounded size of the external handle table.
*/
SUPERVISOR_AND_HANDLE_USED_MEMORY2 = 3,
/**
* Returns the amount of handles in use by the process.
*/
USED_HANDLE_COUNT = 4,
/**
* Returns the highest count of handles that have been open at once by the process.
*/
HIGHEST_HANDLE_COUNT = 5,
/**
* Returns *(u32*)(KProcess+0x234) which is always 0.
*/
KPROCESS_0X234 = 6,
/**
* Returns the number of threads of the process.
*/
THREAD_COUNT = 7,
/**
* Returns the maximum number of threads which can be opened by this process (always 0).
*/
MAX_THREAD_AMOUNT = 8,
/**
* Originally this only returned 0xD8E007ED. Now with v11.3 this returns the memregion for the
* process: out low u32 = KProcess "Kernel flags from the exheader kernel descriptors" & 0xF00
* (memory region flag). High out u32 = 0.
*/
MEMORY_REGION_FLAGS = 19,
/**
* Low u32 = (0x20000000 - <LINEAR virtual-memory base for this process>). That is, the output
* value is the value which can be added to LINEAR memory vaddrs for converting to
* physical-memory addrs.
*/
LINEAR_BASE_ADDR_OFFSET = 20,
/**
* Returns the VA -> PA conversion offset for the QTM static mem block reserved in the exheader
* (0x800000), otherwise 0 (+ error 0xE0E01BF4) if it doesn't exist.
*/
QTM_MEMORY_BLOCK_CONVERSION_OFFSET = 21,
/**
* Returns the base VA of the QTM static mem block reserved in the exheader, otherwise 0 (+
* error 0xE0E01BF4) if it doesn't exist.
*/
QTM_MEMORY_ADDRESS = 22,
/**
* Returns the size of the QTM static mem block reserved in the exheader, otherwise 0 (+ error
* 0xE0E01BF4) if it doesn't exist.
*/
QTM_MEMORY_SIZE = 23,
// Custom values used by Luma3DS and 3GX plugins
/**
* Returns the process name.
*/
LUMA_CUSTOM_PROCESS_NAME = 0x10000,
/**
* Returns the process title ID.
*/
LUMA_CUSTOM_PROCESS_TITLE_ID = 0x10001,
/**
* Returns the codeset text size.
*/
LUMA_CUSTOM_TEXT_SIZE = 0x10002,
/**
* Returns the codeset rodata size.
*/
LUMA_CUSTOM_RODATA_SIZE = 0x10003,
/**
* Returns the codeset data size.
*/
LUMA_CUSTOM_DATA_SIZE = 0x10004,
/**
* Returns the codeset text vaddr.
*/
LUMA_CUSTOM_TEXT_ADDR = 0x10005,
/**
* Returns the codeset rodata vaddr.
*/
LUMA_CUSTOM_RODATA_ADDR = 0x10006,
/**
* Returns the codeset data vaddr.
*/
LUMA_CUSTOM_DATA_ADDR = 0x10007,
};
/**
* Accepted by svcGetSystemInfo param with REGION_MEMORY_USAGE type. Selects a region to query
* memory usage of.
*/
enum class SystemInfoMemUsageRegion {
ALL = 0,
APPLICATION = 1,
SYSTEM = 2,
BASE = 3,
};
/**
* Accepted by svcGetSystemInfo param with CITRA_INFORMATION type. Selects which information
* to fetch from Citra. Some string params don't fit in 7 bytes, so they are split.
*/
enum class SystemInfoCitraInformation {
IS_CITRA = 0, // Always set the output to 1, signaling the app is running on Citra.
BUILD_NAME = 10, // (ie: Nightly, Canary).
BUILD_VERSION = 11, // Build version.
BUILD_DATE_PART1 = 20, // Build date first 7 characters.
BUILD_DATE_PART2 = 21, // Build date next 7 characters.
BUILD_DATE_PART3 = 22, // Build date next 7 characters.
BUILD_DATE_PART4 = 23, // Build date last 7 characters.
BUILD_GIT_BRANCH_PART1 = 30, // Git branch first 7 characters.
BUILD_GIT_BRANCH_PART2 = 31, // Git branch last 7 characters.
BUILD_GIT_DESCRIPTION_PART1 = 40, // Git description (commit) first 7 characters.
BUILD_GIT_DESCRIPTION_PART2 = 41, // Git description (commit) last 7 characters.
};
/**
* Accepted by the custom svcControlProcess.
*/
enum class ControlProcessOP {
/**
* List all handles of the process, varg3 can be either 0 to fetch
* all handles, or token of the type to fetch s32 count =
* svcControlProcess(handle, PROCESSOP_GET_ALL_HANDLES,
* (u32)&outBuf, 0) Returns how many handles were found
*/
PROCESSOP_GET_ALL_HANDLES = 0,
/**
* Set the whole memory of the process with rwx access (in the mmu
* table only) svcControlProcess(handle, PROCESSOP_SET_MMU_TO_RWX,
* 0, 0)
*/
PROCESSOP_SET_MMU_TO_RWX,
/**
* Get the handle of an event which will be signaled
* each time the memory layout of this process changes
* svcControlProcess(handle,
* PROCESSOP_GET_ON_MEMORY_CHANGE_EVENT,
* &eventHandleOut, 0)
*/
PROCESSOP_GET_ON_MEMORY_CHANGE_EVENT,
/**
* Set a flag to be signaled when the process will be exited
* svcControlProcess(handle, PROCESSOP_SIGNAL_ON_EXIT, 0, 0)
*/
PROCESSOP_SIGNAL_ON_EXIT,
/**
* Get the physical address of the VAddr within the process
* svcControlProcess(handle, PROCESSOP_GET_PA_FROM_VA, (u32)&PAOut,
* VAddr)
*/
PROCESSOP_GET_PA_FROM_VA,
/*
* Lock / Unlock the process's threads
* svcControlProcess(handle, PROCESSOP_SCHEDULE_THREADS, lock,
* threadPredicate) lock: 0 to unlock threads, any other value to
* lock threads threadPredicate: can be NULL or a funcptr to a
* predicate (typedef bool (*ThreadPredicate)(KThread *thread);)
* The predicate must return true to operate on the thread
*/
PROCESSOP_SCHEDULE_THREADS,
/*
* Lock / Unlock the process's threads
* svcControlProcess(handle, PROCESSOP_SCHEDULE_THREADS, lock,
* tlsmagicexclude) lock: 0 to unlock threads, any other value to
* lock threads tlsmagicexclude: do not lock threads with this tls magic
* value
*/
PROCESSOP_SCHEDULE_THREADS_WITHOUT_TLS_MAGIC,
/**
* Disable any thread creation restrictions, such as priority value
* or allowed cores
*/
PROCESSOP_DISABLE_CREATE_THREAD_RESTRICTIONS,
};
class SVC : public SVCWrapper<SVC> {
public:
SVC(Core::System& system);
void CallSVC(u32 immediate);
private:
Core::System& system;
Kernel::KernelSystem& kernel;
Memory::MemorySystem& memory;
friend class SVCWrapper<SVC>;
// ARM interfaces
u32 GetReg(std::size_t n);
void SetReg(std::size_t n, u32 value);
// SVC interfaces
ResultCode ControlMemory(u32* out_addr, u32 addr0, u32 addr1, u32 size, u32 operation,
u32 permissions);
void ExitProcess();
ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 other_permissions);
ResultCode UnmapMemoryBlock(Handle handle, u32 addr);
ResultCode ConnectToPort(Handle* out_handle, VAddr port_name_address);
ResultCode SendSyncRequest(Handle handle);
ResultCode OpenProcess(Handle* out_handle, u32 process_id);
ResultCode OpenThread(Handle* out_handle, Handle process_handle, u32 thread_id);
ResultCode CloseHandle(Handle handle);
ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds);
ResultCode WaitSynchronizationN(s32* out, VAddr handles_address, s32 handle_count,
bool wait_all, s64 nano_seconds);
ResultCode ReplyAndReceive(s32* index, VAddr handles_address, s32 handle_count,
Handle reply_target);
ResultCode CreateAddressArbiter(Handle* out_handle);
ResultCode ArbitrateAddress(Handle handle, u32 address, u32 type, u32 value, s64 nanoseconds);
void Break(u8 break_reason);
void OutputDebugString(VAddr address, s32 len);
ResultCode GetResourceLimit(Handle* resource_limit, Handle process_handle);
ResultCode GetResourceLimitCurrentValues(VAddr values, Handle resource_limit_handle,
VAddr names, u32 name_count);
ResultCode GetResourceLimitLimitValues(VAddr values, Handle resource_limit_handle, VAddr names,
u32 name_count);
ResultCode CreateThread(Handle* out_handle, u32 entry_point, u32 arg, VAddr stack_top,
u32 priority, s32 processor_id);
void ExitThread();
ResultCode GetThreadPriority(u32* priority, Handle handle);
ResultCode SetThreadPriority(Handle handle, u32 priority);
ResultCode CreateMutex(Handle* out_handle, u32 initial_locked);
ResultCode ReleaseMutex(Handle handle);
ResultCode GetProcessId(u32* process_id, Handle process_handle);
ResultCode GetProcessIdOfThread(u32* process_id, Handle thread_handle);
ResultCode GetThreadId(u32* thread_id, Handle handle);
ResultCode CreateSemaphore(Handle* out_handle, s32 initial_count, s32 max_count);
ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count);
ResultCode KernelSetState(u32 kernel_state, u32 varg1, u32 varg2);
ResultCode QueryProcessMemory(MemoryInfo* memory_info, PageInfo* page_info,
Handle process_handle, u32 addr);
ResultCode QueryMemory(MemoryInfo* memory_info, PageInfo* page_info, u32 addr);
ResultCode CreateEvent(Handle* out_handle, u32 reset_type);
ResultCode DuplicateHandle(Handle* out, Handle handle);
ResultCode SignalEvent(Handle handle);
ResultCode ClearEvent(Handle handle);
ResultCode CreateTimer(Handle* out_handle, u32 reset_type);
ResultCode ClearTimer(Handle handle);
ResultCode SetTimer(Handle handle, s64 initial, s64 interval);
ResultCode CancelTimer(Handle handle);
void SleepThread(s64 nanoseconds);
s64 GetSystemTick();
ResultCode GetHandleInfo(s64* out, Handle handle, u32 type);
ResultCode CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32 my_permission,
u32 other_permission);
ResultCode CreatePort(Handle* server_port, Handle* client_port, VAddr name_address,
u32 max_sessions);
ResultCode CreateSessionToPort(Handle* out_client_session, Handle client_port_handle);
ResultCode CreateSession(Handle* server_session, Handle* client_session);
ResultCode AcceptSession(Handle* out_server_session, Handle server_port_handle);
ResultCode GetSystemInfo(s64* out, u32 type, s32 param);
ResultCode GetProcessInfo(s64* out, Handle process_handle, u32 type);
ResultCode GetThreadInfo(s64* out, Handle thread_handle, u32 type);
ResultCode GetProcessList(s32* process_count, VAddr out_process_array,
s32 out_process_array_count);
ResultCode InvalidateInstructionCacheRange(u32 addr, u32 size);
ResultCode InvalidateEntireInstructionCache();
u32 ConvertVaToPa(u32 addr);
ResultCode MapProcessMemoryEx(Handle dst_process_handle, u32 dst_address,
Handle src_process_handle, u32 src_address, u32 size);
ResultCode UnmapProcessMemoryEx(Handle process, u32 dst_address, u32 size);
ResultCode ControlProcess(Handle process_handle, u32 process_OP, u32 varg2, u32 varg3);
struct FunctionDef {
using Func = void (SVC::*)();
u32 id;
Func func;
const char* name;
};
static const std::array<FunctionDef, 180> SVC_Table;
static const FunctionDef* GetSVCInfo(u32 func_num);
};
/// Map application or GSP heap memory
ResultCode SVC::ControlMemory(u32* out_addr, u32 addr0, u32 addr1, u32 size, u32 operation,
u32 permissions) {
LOG_DEBUG(Kernel_SVC,
"called operation=0x{:08X}, addr0=0x{:08X}, addr1=0x{:08X}, "
"size=0x{:X}, permissions=0x{:08X}",
operation, addr0, addr1, size, permissions);
if ((addr0 & Memory::CITRA_PAGE_MASK) != 0 || (addr1 & Memory::CITRA_PAGE_MASK) != 0) {
return ERR_MISALIGNED_ADDRESS;
}
if ((size & Memory::CITRA_PAGE_MASK) != 0) {
return ERR_MISALIGNED_SIZE;
}
u32 region = operation & MEMOP_REGION_MASK;
operation &= ~MEMOP_REGION_MASK;
if (region != 0) {
LOG_WARNING(Kernel_SVC, "ControlMemory with specified region not supported, region={:X}",
region);
}
if ((permissions & (u32)MemoryPermission::ReadWrite) != permissions) {
return ERR_INVALID_COMBINATION;
}
VMAPermission vma_permissions = (VMAPermission)permissions;
auto& process = *kernel.GetCurrentProcess();
switch (operation & MEMOP_OPERATION_MASK) {
case MEMOP_FREE: {
// TODO(Subv): What happens if an application tries to FREE a block of memory that has a
// SharedMemory pointing to it?
if (addr0 >= Memory::HEAP_VADDR && addr0 < Memory::HEAP_VADDR_END) {
ResultCode result = process.HeapFree(addr0, size);
if (result.IsError())
return result;
} else if (addr0 >= process.GetLinearHeapBase() && addr0 < process.GetLinearHeapLimit()) {
ResultCode result = process.LinearFree(addr0, size);
if (result.IsError())
return result;
} else {
return ERR_INVALID_ADDRESS;
}
*out_addr = addr0;
break;
}
case MEMOP_COMMIT: {
if (operation & MEMOP_LINEAR) {
CASCADE_RESULT(*out_addr, process.LinearAllocate(addr0, size, vma_permissions));
} else {
CASCADE_RESULT(*out_addr, process.HeapAllocate(addr0, size, vma_permissions));
}
break;
}
case MEMOP_MAP: {
CASCADE_CODE(process.Map(addr0, addr1, size, vma_permissions));
break;
}
case MEMOP_UNMAP: {
CASCADE_CODE(process.Unmap(addr0, addr1, size, vma_permissions));
break;
}
case MEMOP_PROTECT: {
ResultCode result = process.vm_manager.ReprotectRange(addr0, size, vma_permissions);
if (result.IsError())
return result;
break;
}
default:
LOG_ERROR(Kernel_SVC, "unknown operation=0x{:08X}", operation);
return ERR_INVALID_COMBINATION;
}
process.vm_manager.LogLayout(Log::Level::Trace);
return RESULT_SUCCESS;
}
void SVC::ExitProcess() {
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
LOG_INFO(Kernel_SVC, "Process {} exiting", current_process->process_id);
ASSERT_MSG(current_process->status == ProcessStatus::Running, "Process has already exited");
current_process->status = ProcessStatus::Exited;
// Stop all the process threads that are currently waiting for objects.
auto& thread_list = kernel.GetCurrentThreadManager().GetThreadList();
for (auto& thread : thread_list) {
if (thread->owner_process.lock() != current_process)
continue;
if (thread.get() == kernel.GetCurrentThreadManager().GetCurrentThread())
continue;
// TODO(Subv): When are the other running/ready threads terminated?
ASSERT_MSG(thread->status == ThreadStatus::WaitSynchAny ||
thread->status == ThreadStatus::WaitSynchAll,
"Exiting processes with non-waiting threads is currently unimplemented");
thread->Stop();
}
current_process->Exit();
// Kill the current thread
kernel.GetCurrentThreadManager().GetCurrentThread()->Stop();
system.PrepareReschedule();
}
/// Maps a memory block to specified address
ResultCode SVC::MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 other_permissions) {
LOG_TRACE(Kernel_SVC,
"called memblock=0x{:08X}, addr=0x{:08X}, mypermissions=0x{:08X}, "
"otherpermission={}",
handle, addr, permissions, other_permissions);
std::shared_ptr<SharedMemory> shared_memory =
kernel.GetCurrentProcess()->handle_table.Get<SharedMemory>(handle);
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
MemoryPermission permissions_type = static_cast<MemoryPermission>(permissions);
switch (permissions_type) {
case MemoryPermission::Read:
case MemoryPermission::Write:
case MemoryPermission::ReadWrite:
case MemoryPermission::Execute:
case MemoryPermission::ReadExecute:
case MemoryPermission::WriteExecute:
case MemoryPermission::ReadWriteExecute:
case MemoryPermission::DontCare:
return shared_memory->Map(*kernel.GetCurrentProcess(), addr, permissions_type,
static_cast<MemoryPermission>(other_permissions));
default:
LOG_ERROR(Kernel_SVC, "unknown permissions=0x{:08X}", permissions);
}
return ERR_INVALID_COMBINATION;
}
ResultCode SVC::UnmapMemoryBlock(Handle handle, u32 addr) {
LOG_TRACE(Kernel_SVC, "called memblock=0x{:08X}, addr=0x{:08X}", handle, addr);
// TODO(Subv): Return E0A01BF5 if the address is not in the application's heap
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
std::shared_ptr<SharedMemory> shared_memory =
current_process->handle_table.Get<SharedMemory>(handle);
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
return shared_memory->Unmap(*current_process, addr);
}
/// Connect to an OS service given the port name, returns the handle to the port to out
ResultCode SVC::ConnectToPort(Handle* out_handle, VAddr port_name_address) {
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), port_name_address)) {
return ERR_NOT_FOUND;
}
static constexpr std::size_t PortNameMaxLength = 11;
// Read 1 char beyond the max allowed port name to detect names that are too long.
std::string port_name = memory.ReadCString(port_name_address, PortNameMaxLength + 1);
if (port_name.size() > PortNameMaxLength) {
return ERR_PORT_NAME_TOO_LONG;
}
LOG_TRACE(Kernel_SVC, "called port_name={}", port_name);
auto it = kernel.named_ports.find(port_name);
if (it == kernel.named_ports.end()) {
LOG_WARNING(Kernel_SVC, "tried to connect to unknown port: {}", port_name);
return ERR_NOT_FOUND;
}
auto client_port = it->second;
std::shared_ptr<ClientSession> client_session;
CASCADE_RESULT(client_session, client_port->Connect());
// Return the client session
CASCADE_RESULT(*out_handle, kernel.GetCurrentProcess()->handle_table.Create(client_session));
return RESULT_SUCCESS;
}
/// Makes a blocking IPC call to an OS service.
ResultCode SVC::SendSyncRequest(Handle handle) {
std::shared_ptr<ClientSession> session =
kernel.GetCurrentProcess()->handle_table.Get<ClientSession>(handle);
if (session == nullptr) {
return ERR_INVALID_HANDLE;
}
LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName());
system.PrepareReschedule();
auto thread = SharedFrom(kernel.GetCurrentThreadManager().GetCurrentThread());
if (kernel.GetIPCRecorder().IsEnabled()) {
kernel.GetIPCRecorder().RegisterRequest(session, thread);
}
return session->SendSyncRequest(thread);
}
ResultCode SVC::OpenProcess(Handle* out_handle, u32 process_id) {
std::shared_ptr<Process> process = kernel.GetProcessById(process_id);
if (!process) {
// Result 0xd9001818 (process not found?)
return ResultCode(24, ErrorModule::OS, ErrorSummary::WrongArgument, ErrorLevel::Permanent);
}
auto result_handle = kernel.GetCurrentProcess()->handle_table.Create(process);
if (result_handle.empty()) {
return result_handle.Code();
}
*out_handle = result_handle.Unwrap();
return RESULT_SUCCESS;
}
ResultCode SVC::OpenThread(Handle* out_handle, Handle process_handle, u32 thread_id) {
if (process_handle == 0) {
LOG_ERROR(Kernel_SVC, "Uninplemented svcOpenThread process_handle=0");
// Result 0xd9001819 (thread not found?)
return ResultCode(25, ErrorModule::OS, ErrorSummary::WrongArgument, ErrorLevel::Permanent);
}
std::shared_ptr<Process> process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process_handle);
if (!process) {
return ERR_INVALID_HANDLE;
}
for (u32 core_id = 0; core_id < system.GetNumCores(); core_id++) {
auto& thread_list = kernel.GetThreadManager(core_id).GetThreadList();
for (auto& thread : thread_list) {
if (thread->owner_process.lock() == process && thread.get()->thread_id == thread_id) {
auto result_handle = kernel.GetCurrentProcess()->handle_table.Create(thread);
if (result_handle.empty()) {
return result_handle.Code();
}
*out_handle = result_handle.Unwrap();
return RESULT_SUCCESS;
}
}
}
// Result 0xd9001819 (thread not found?)
return ResultCode(25, ErrorModule::OS, ErrorSummary::WrongArgument, ErrorLevel::Permanent);
}
/// Close a handle
ResultCode SVC::CloseHandle(Handle handle) {
LOG_TRACE(Kernel_SVC, "Closing handle 0x{:08X}", handle);
return kernel.GetCurrentProcess()->handle_table.Close(handle);
}
static ResultCode ReceiveIPCRequest(Kernel::KernelSystem& kernel, Memory::MemorySystem& memory,
std::shared_ptr<ServerSession> server_session,
std::shared_ptr<Thread> thread);
class SVC_SyncCallback : public Kernel::WakeupCallback {
public:
explicit SVC_SyncCallback(bool do_output_) : do_output(do_output_) {}
void WakeUp(ThreadWakeupReason reason, std::shared_ptr<Thread> thread,
std::shared_ptr<WaitObject> object) {
if (reason == ThreadWakeupReason::Timeout) {
thread->SetWaitSynchronizationResult(RESULT_TIMEOUT);
return;
}
ASSERT(reason == ThreadWakeupReason::Signal);
thread->SetWaitSynchronizationResult(RESULT_SUCCESS);
// The wait_all case does not update the output index.
if (do_output) {
thread->SetWaitSynchronizationOutput(thread->GetWaitObjectIndex(object.get()));
}
}
private:
bool do_output;
SVC_SyncCallback() = default;
template <class Archive>
void serialize(Archive& ar, const unsigned int) {
ar& boost::serialization::base_object<Kernel::WakeupCallback>(*this);
ar& do_output;
}
friend class boost::serialization::access;
};
class SVC_IPCCallback : public Kernel::WakeupCallback {
public:
explicit SVC_IPCCallback(Core::System& system_) : system(system_) {}
void WakeUp(ThreadWakeupReason reason, std::shared_ptr<Thread> thread,
std::shared_ptr<WaitObject> object) {
ASSERT(thread->status == ThreadStatus::WaitSynchAny);
ASSERT(reason == ThreadWakeupReason::Signal);
ResultCode result = RESULT_SUCCESS;
if (object->GetHandleType() == HandleType::ServerSession) {
auto server_session = DynamicObjectCast<ServerSession>(object);
result = ReceiveIPCRequest(system.Kernel(), system.Memory(), server_session, thread);
}
thread->SetWaitSynchronizationResult(result);
thread->SetWaitSynchronizationOutput(thread->GetWaitObjectIndex(object.get()));
}
private:
Core::System& system;
SVC_IPCCallback() : system(Core::Global<Core::System>()) {}
template <class Archive>
void serialize(Archive& ar, const unsigned int) {
ar& boost::serialization::base_object<Kernel::WakeupCallback>(*this);
}
friend class boost::serialization::access;
};
/// Wait for a handle to synchronize, timeout after the specified nanoseconds
ResultCode SVC::WaitSynchronization1(Handle handle, s64 nano_seconds) {
auto object = kernel.GetCurrentProcess()->handle_table.Get<WaitObject>(handle);
Thread* thread = kernel.GetCurrentThreadManager().GetCurrentThread();
if (object == nullptr)
return ERR_INVALID_HANDLE;
LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({}:{}), nanoseconds={}", handle,
object->GetTypeName(), object->GetName(), nano_seconds);
if (object->ShouldWait(thread)) {
if (nano_seconds == 0)
return RESULT_TIMEOUT;
thread->wait_objects = {object};
object->AddWaitingThread(SharedFrom(thread));
thread->status = ThreadStatus::WaitSynchAny;
// Create an event to wake the thread up after the specified nanosecond delay has passed
thread->WakeAfterDelay(nano_seconds);
thread->wakeup_callback = std::make_shared<SVC_SyncCallback>(false);
system.PrepareReschedule();
// Note: The output of this SVC will be set to RESULT_SUCCESS if the thread
// resumes due to a signal in its wait objects.
// Otherwise we retain the default value of timeout.
return RESULT_TIMEOUT;
}
object->Acquire(thread);
return RESULT_SUCCESS;
}
/// Wait for the given handles to synchronize, timeout after the specified nanoseconds
ResultCode SVC::WaitSynchronizationN(s32* out, VAddr handles_address, s32 handle_count,
bool wait_all, s64 nano_seconds) {
Thread* thread = kernel.GetCurrentThreadManager().GetCurrentThread();
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address)) {
return ERR_INVALID_POINTER;
}
// NOTE: on real hardware, there is no nullptr check for 'out' (tested with firmware 4.4). If
// this happens, the running application will crash.
ASSERT_MSG(out != nullptr, "invalid output pointer specified!");
// Check if 'handle_count' is invalid
if (handle_count < 0) {
return ERR_OUT_OF_RANGE;
}
using ObjectPtr = std::shared_ptr<WaitObject>;
std::vector<ObjectPtr> objects(handle_count);
for (int i = 0; i < handle_count; ++i) {
Handle handle = memory.Read32(handles_address + i * sizeof(Handle));
auto object = kernel.GetCurrentProcess()->handle_table.Get<WaitObject>(handle);
if (object == nullptr)
return ERR_INVALID_HANDLE;
objects[i] = object;
}
if (wait_all) {
bool all_available =
std::all_of(objects.begin(), objects.end(),
[thread](const ObjectPtr& object) { return !object->ShouldWait(thread); });
if (all_available) {
// We can acquire all objects right now, do so.
for (auto& object : objects)
object->Acquire(thread);
// Note: In this case, the `out` parameter is not set,
// and retains whatever value it had before.
return RESULT_SUCCESS;
}
// Not all objects were available right now, prepare to suspend the thread.
// If a timeout value of 0 was provided, just return the Timeout error code instead of
// suspending the thread.
if (nano_seconds == 0)
return RESULT_TIMEOUT;
// Put the thread to sleep
thread->status = ThreadStatus::WaitSynchAll;
// Add the thread to each of the objects' waiting threads.
for (auto& object : objects) {
object->AddWaitingThread(SharedFrom(thread));
}
thread->wait_objects = std::move(objects);
// Create an event to wake the thread up after the specified nanosecond delay has passed
thread->WakeAfterDelay(nano_seconds);
thread->wakeup_callback = std::make_shared<SVC_SyncCallback>(false);
system.PrepareReschedule();
// This value gets set to -1 by default in this case, it is not modified after this.
*out = -1;
// Note: The output of this SVC will be set to RESULT_SUCCESS if the thread resumes due to
// a signal in one of its wait objects.
return RESULT_TIMEOUT;
} else {
// Find the first object that is acquirable in the provided list of objects
auto itr = std::find_if(objects.begin(), objects.end(), [thread](const ObjectPtr& object) {
return !object->ShouldWait(thread);
});
if (itr != objects.end()) {
// We found a ready object, acquire it and set the result value
WaitObject* object = itr->get();
object->Acquire(thread);
*out = static_cast<s32>(std::distance(objects.begin(), itr));
return RESULT_SUCCESS;
}
// No objects were ready to be acquired, prepare to suspend the thread.
// If a timeout value of 0 was provided, just return the Timeout error code instead of
// suspending the thread.
if (nano_seconds == 0)
return RESULT_TIMEOUT;
// Put the thread to sleep
thread->status = ThreadStatus::WaitSynchAny;
// Add the thread to each of the objects' waiting threads.
for (std::size_t i = 0; i < objects.size(); ++i) {
WaitObject* object = objects[i].get();
object->AddWaitingThread(SharedFrom(thread));
}
thread->wait_objects = std::move(objects);
// Note: If no handles and no timeout were given, then the thread will deadlock, this is
// consistent with hardware behavior.
// Create an event to wake the thread up after the specified nanosecond delay has passed
thread->WakeAfterDelay(nano_seconds);
thread->wakeup_callback = std::make_shared<SVC_SyncCallback>(true);
system.PrepareReschedule();
// Note: The output of this SVC will be set to RESULT_SUCCESS if the thread resumes due to a
// signal in one of its wait objects.
// Otherwise we retain the default value of timeout, and -1 in the out parameter
*out = -1;
return RESULT_TIMEOUT;
}
}
static ResultCode ReceiveIPCRequest(Kernel::KernelSystem& kernel, Memory::MemorySystem& memory,
std::shared_ptr<ServerSession> server_session,
std::shared_ptr<Thread> thread) {
if (server_session->parent->client == nullptr) {
return ERR_SESSION_CLOSED_BY_REMOTE;
}
VAddr target_address = thread->GetCommandBufferAddress();
VAddr source_address = server_session->currently_handling->GetCommandBufferAddress();
ResultCode translation_result = TranslateCommandBuffer(
kernel, memory, server_session->currently_handling, thread, source_address, target_address,
server_session->mapped_buffer_context, false);
// If a translation error occurred, immediately resume the client thread.
if (translation_result.IsError()) {
// Set the output of SendSyncRequest in the client thread to the translation output.
server_session->currently_handling->SetWaitSynchronizationResult(translation_result);
server_session->currently_handling->ResumeFromWait();
server_session->currently_handling = nullptr;
// TODO(Subv): This path should try to wait again on the same objects.
ASSERT_MSG(false, "ReplyAndReceive translation error behavior unimplemented");
}
return translation_result;
}
/// In a single operation, sends a IPC reply and waits for a new request.
ResultCode SVC::ReplyAndReceive(s32* index, VAddr handles_address, s32 handle_count,
Handle reply_target) {
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address)) {
return ERR_INVALID_POINTER;
}
// Check if 'handle_count' is invalid
if (handle_count < 0) {
return ERR_OUT_OF_RANGE;
}
using ObjectPtr = std::shared_ptr<WaitObject>;
std::vector<ObjectPtr> objects(handle_count);
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
for (int i = 0; i < handle_count; ++i) {
Handle handle = memory.Read32(handles_address + i * sizeof(Handle));
auto object = current_process->handle_table.Get<WaitObject>(handle);
if (object == nullptr)
return ERR_INVALID_HANDLE;
objects[i] = object;
}
// We are also sending a command reply.
// Do not send a reply if the command id in the command buffer is 0xFFFF.
Thread* thread = kernel.GetCurrentThreadManager().GetCurrentThread();
u32 cmd_buff_header = memory.Read32(thread->GetCommandBufferAddress());
IPC::Header header{cmd_buff_header};
if (reply_target != 0 && header.command_id != 0xFFFF) {
auto session = current_process->handle_table.Get<ServerSession>(reply_target);
if (session == nullptr)
return ERR_INVALID_HANDLE;
auto request_thread = std::move(session->currently_handling);
// Mark the request as "handled".
session->currently_handling = nullptr;
// Error out if there's no request thread or the session was closed.
// TODO(Subv): Is the same error code (ClosedByRemote) returned for both of these cases?
if (request_thread == nullptr || session->parent->client == nullptr) {
*index = -1;
return ERR_SESSION_CLOSED_BY_REMOTE;
}
VAddr source_address = thread->GetCommandBufferAddress();
VAddr target_address = request_thread->GetCommandBufferAddress();
ResultCode translation_result = TranslateCommandBuffer(
kernel, memory, SharedFrom(thread), request_thread, source_address, target_address,
session->mapped_buffer_context, true);
// Note: The real kernel seems to always panic if the Server->Client buffer translation
// fails for whatever reason.
ASSERT(translation_result.IsSuccess());
// Note: The scheduler is not invoked here.
request_thread->ResumeFromWait();
}
if (handle_count == 0) {
*index = 0;
// The kernel uses this value as a placeholder for the real error, and returns it when we
// pass no handles and do not perform any reply.
if (reply_target == 0 || header.command_id == 0xFFFF)
return ResultCode(0xE7E3FFFF);
return RESULT_SUCCESS;
}
// Find the first object that is acquirable in the provided list of objects
auto itr = std::find_if(objects.begin(), objects.end(), [thread](const ObjectPtr& object) {
return !object->ShouldWait(thread);
});
if (itr != objects.end()) {
// We found a ready object, acquire it and set the result value
WaitObject* object = itr->get();
object->Acquire(thread);
*index = static_cast<s32>(std::distance(objects.begin(), itr));
if (object->GetHandleType() != HandleType::ServerSession)
return RESULT_SUCCESS;
auto server_session = static_cast<ServerSession*>(object);
return ReceiveIPCRequest(kernel, memory, SharedFrom(server_session), SharedFrom(thread));
}
// No objects were ready to be acquired, prepare to suspend the thread.
// Put the thread to sleep
thread->status = ThreadStatus::WaitSynchAny;
// Add the thread to each of the objects' waiting threads.
for (std::size_t i = 0; i < objects.size(); ++i) {
WaitObject* object = objects[i].get();
object->AddWaitingThread(SharedFrom(thread));
}
thread->wait_objects = std::move(objects);
thread->wakeup_callback = std::make_shared<SVC_IPCCallback>(system);
system.PrepareReschedule();
// Note: The output of this SVC will be set to RESULT_SUCCESS if the thread resumes due to a
// signal in one of its wait objects, or to 0xC8A01836 if there was a translation error.
// By default the index is set to -1.
*index = -1;
return RESULT_SUCCESS;
}
/// Create an address arbiter (to allocate access to shared resources)
ResultCode SVC::CreateAddressArbiter(Handle* out_handle) {
std::shared_ptr<AddressArbiter> arbiter = kernel.CreateAddressArbiter();
CASCADE_RESULT(*out_handle,
kernel.GetCurrentProcess()->handle_table.Create(std::move(arbiter)));
LOG_TRACE(Kernel_SVC, "returned handle=0x{:08X}", *out_handle);
return RESULT_SUCCESS;
}
/// Arbitrate address
ResultCode SVC::ArbitrateAddress(Handle handle, u32 address, u32 type, u32 value, s64 nanoseconds) {
LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}, address=0x{:08X}, type=0x{:08X}, value=0x{:08X}",
handle, address, type, value);
std::shared_ptr<AddressArbiter> arbiter =
kernel.GetCurrentProcess()->handle_table.Get<AddressArbiter>(handle);
if (arbiter == nullptr)
return ERR_INVALID_HANDLE;
auto res =
arbiter->ArbitrateAddress(SharedFrom(kernel.GetCurrentThreadManager().GetCurrentThread()),
static_cast<ArbitrationType>(type), address, value, nanoseconds);
// TODO(Subv): Identify in which specific cases this call should cause a reschedule.
system.PrepareReschedule();
return res;
}
void SVC::Break(u8 break_reason) {
LOG_CRITICAL(Debug_Emulated, "Emulated program broke execution!");
std::string reason_str;
switch (break_reason) {
case 0:
reason_str = "PANIC";
break;
case 1:
reason_str = "ASSERT";
break;
case 2:
reason_str = "USER";
break;
default:
reason_str = "UNKNOWN";
break;
}
LOG_CRITICAL(Debug_Emulated, "Break reason: {}", reason_str);
}
/// Used to output a message on a debug hardware unit - does nothing on a retail unit
void SVC::OutputDebugString(VAddr address, s32 len) {
if (len <= 0) {
return;
}
std::string string(len, ' ');
memory.ReadBlock(*kernel.GetCurrentProcess(), address, string.data(), len);
LOG_DEBUG(Debug_Emulated, "{}", string);
}
/// Get resource limit
ResultCode SVC::GetResourceLimit(Handle* resource_limit, Handle process_handle) {
LOG_TRACE(Kernel_SVC, "called process=0x{:08X}", process_handle);
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
std::shared_ptr<Process> process = current_process->handle_table.Get<Process>(process_handle);
if (process == nullptr)
return ERR_INVALID_HANDLE;
CASCADE_RESULT(*resource_limit, current_process->handle_table.Create(process->resource_limit));
return RESULT_SUCCESS;
}
/// Get resource limit current values
ResultCode SVC::GetResourceLimitCurrentValues(VAddr values, Handle resource_limit_handle,
VAddr names, u32 name_count) {
LOG_TRACE(Kernel_SVC, "called resource_limit={:08X}, names={:08X}, name_count={}",
resource_limit_handle, names, name_count);
std::shared_ptr<ResourceLimit> resource_limit =
kernel.GetCurrentProcess()->handle_table.Get<ResourceLimit>(resource_limit_handle);
if (resource_limit == nullptr)
return ERR_INVALID_HANDLE;
for (unsigned int i = 0; i < name_count; ++i) {
u32 name = memory.Read32(names + i * sizeof(u32));
s64 value = resource_limit->GetCurrentResourceValue(name);
memory.Write64(values + i * sizeof(u64), value);
}
return RESULT_SUCCESS;
}
/// Get resource limit max values
ResultCode SVC::GetResourceLimitLimitValues(VAddr values, Handle resource_limit_handle, VAddr names,
u32 name_count) {
LOG_TRACE(Kernel_SVC, "called resource_limit={:08X}, names={:08X}, name_count={}",
resource_limit_handle, names, name_count);
std::shared_ptr<ResourceLimit> resource_limit =
kernel.GetCurrentProcess()->handle_table.Get<ResourceLimit>(resource_limit_handle);
if (resource_limit == nullptr)
return ERR_INVALID_HANDLE;
for (unsigned int i = 0; i < name_count; ++i) {
u32 name = memory.Read32(names + i * sizeof(u32));
s64 value = resource_limit->GetMaxResourceValue(name);
memory.Write64(values + i * sizeof(u64), value);
}
return RESULT_SUCCESS;
}
/// Creates a new thread
ResultCode SVC::CreateThread(Handle* out_handle, u32 entry_point, u32 arg, VAddr stack_top,
u32 priority, s32 processor_id) {
std::string name = fmt::format("thread-{:08X}", entry_point);
if (priority > ThreadPrioLowest) {
return ERR_OUT_OF_RANGE;
}
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
std::shared_ptr<ResourceLimit>& resource_limit = current_process->resource_limit;
if (resource_limit->GetMaxResourceValue(ResourceTypes::PRIORITY) > priority &&
!current_process->no_thread_restrictions) {
return ERR_NOT_AUTHORIZED;
}
if (processor_id == ThreadProcessorIdDefault) {
// Set the target CPU to the one specified in the process' exheader.
processor_id = current_process->ideal_processor;
ASSERT(processor_id != ThreadProcessorIdDefault);
}
switch (processor_id) {
case ThreadProcessorId0:
break;
case ThreadProcessorIdAll:
LOG_INFO(Kernel_SVC,
"Newly created thread is allowed to be run in any Core, for now run in core 0.");
processor_id = ThreadProcessorId0;
break;
case ThreadProcessorId1:
case ThreadProcessorId2:
case ThreadProcessorId3:
// TODO: Check and log for: When processorid==0x2 and the process is not a BASE mem-region
// process, exheader kernel-flags bitmask 0x2000 must be set (otherwise error 0xD9001BEA is
// returned). When processorid==0x3 and the process is not a BASE mem-region process, error
// 0xD9001BEA is returned. These are the only restriction checks done by the kernel for
// processorid. If this is implemented, make sure to check process->no_thread_restrictions.
break;
default:
ASSERT_MSG(false, "Unsupported thread processor ID: {}", processor_id);
break;
}
CASCADE_RESULT(std::shared_ptr<Thread> thread,
kernel.CreateThread(name, entry_point, priority, arg, processor_id, stack_top,
current_process));
thread->context->SetFpscr(FPSCR_DEFAULT_NAN | FPSCR_FLUSH_TO_ZERO |
FPSCR_ROUND_TOZERO); // 0x03C00000
CASCADE_RESULT(*out_handle, current_process->handle_table.Create(std::move(thread)));
system.PrepareReschedule();
LOG_TRACE(Kernel_SVC,
"called entrypoint=0x{:08X} ({}), arg=0x{:08X}, stacktop=0x{:08X}, "
"threadpriority=0x{:08X}, processorid=0x{:08X} : created handle=0x{:08X}",
entry_point, name, arg, stack_top, priority, processor_id, *out_handle);
return RESULT_SUCCESS;
}
/// Called when a thread exits
void SVC::ExitThread() {
LOG_TRACE(Kernel_SVC, "called, pc=0x{:08X}", system.GetRunningCore().GetPC());
kernel.GetCurrentThreadManager().ExitCurrentThread();
system.PrepareReschedule();
}
/// Gets the priority for the specified thread
ResultCode SVC::GetThreadPriority(u32* priority, Handle handle) {
const std::shared_ptr<Thread> thread =
kernel.GetCurrentProcess()->handle_table.Get<Thread>(handle);
if (thread == nullptr)
return ERR_INVALID_HANDLE;
*priority = thread->GetPriority();
return RESULT_SUCCESS;
}
/// Sets the priority for the specified thread
ResultCode SVC::SetThreadPriority(Handle handle, u32 priority) {
if (priority > ThreadPrioLowest) {
return ERR_OUT_OF_RANGE;
}
std::shared_ptr<Thread> thread = kernel.GetCurrentProcess()->handle_table.Get<Thread>(handle);
if (thread == nullptr)
return ERR_INVALID_HANDLE;
// Note: The kernel uses the current process's resource limit instead of
// the one from the thread owner's resource limit.
std::shared_ptr<ResourceLimit>& resource_limit = kernel.GetCurrentProcess()->resource_limit;
if (resource_limit->GetMaxResourceValue(ResourceTypes::PRIORITY) > priority) {
return ERR_NOT_AUTHORIZED;
}
thread->SetPriority(priority);
thread->UpdatePriority();
// Update the mutexes that this thread is waiting for
for (auto& mutex : thread->pending_mutexes)
mutex->UpdatePriority();
system.PrepareReschedule();
return RESULT_SUCCESS;
}
/// Create a mutex
ResultCode SVC::CreateMutex(Handle* out_handle, u32 initial_locked) {
std::shared_ptr<Mutex> mutex = kernel.CreateMutex(initial_locked != 0);
mutex->name = fmt::format("mutex-{:08x}", system.GetRunningCore().GetReg(14));
CASCADE_RESULT(*out_handle, kernel.GetCurrentProcess()->handle_table.Create(std::move(mutex)));
LOG_TRACE(Kernel_SVC, "called initial_locked={} : created handle=0x{:08X}",
initial_locked ? "true" : "false", *out_handle);
return RESULT_SUCCESS;
}
/// Release a mutex
ResultCode SVC::ReleaseMutex(Handle handle) {
LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}", handle);
std::shared_ptr<Mutex> mutex = kernel.GetCurrentProcess()->handle_table.Get<Mutex>(handle);
if (mutex == nullptr)
return ERR_INVALID_HANDLE;
return mutex->Release(kernel.GetCurrentThreadManager().GetCurrentThread());
}
/// Get the ID of the specified process
ResultCode SVC::GetProcessId(u32* process_id, Handle process_handle) {
LOG_TRACE(Kernel_SVC, "called process=0x{:08X}", process_handle);
const std::shared_ptr<Process> process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process_handle);
if (process == nullptr)
return ERR_INVALID_HANDLE;
*process_id = process->process_id;
return RESULT_SUCCESS;
}
/// Get the ID of the process that owns the specified thread
ResultCode SVC::GetProcessIdOfThread(u32* process_id, Handle thread_handle) {
LOG_TRACE(Kernel_SVC, "called thread=0x{:08X}", thread_handle);
const std::shared_ptr<Thread> thread =
kernel.GetCurrentProcess()->handle_table.Get<Thread>(thread_handle);
if (thread == nullptr)
return ERR_INVALID_HANDLE;
const std::shared_ptr<Process> process = thread->owner_process.lock();
ASSERT_MSG(process != nullptr, "Invalid parent process for thread={:#010X}", thread_handle);
*process_id = process->process_id;
return RESULT_SUCCESS;
}
/// Get the ID for the specified thread.
ResultCode SVC::GetThreadId(u32* thread_id, Handle handle) {
LOG_TRACE(Kernel_SVC, "called thread=0x{:08X}", handle);
const std::shared_ptr<Thread> thread =
kernel.GetCurrentProcess()->handle_table.Get<Thread>(handle);
if (thread == nullptr)
return ERR_INVALID_HANDLE;
*thread_id = thread->GetThreadId();
return RESULT_SUCCESS;
}
/// Creates a semaphore
ResultCode SVC::CreateSemaphore(Handle* out_handle, s32 initial_count, s32 max_count) {
CASCADE_RESULT(std::shared_ptr<Semaphore> semaphore,
kernel.CreateSemaphore(initial_count, max_count));
semaphore->name = fmt::format("semaphore-{:08x}", system.GetRunningCore().GetReg(14));
CASCADE_RESULT(*out_handle,
kernel.GetCurrentProcess()->handle_table.Create(std::move(semaphore)));
LOG_TRACE(Kernel_SVC, "called initial_count={}, max_count={}, created handle=0x{:08X}",
initial_count, max_count, *out_handle);
return RESULT_SUCCESS;
}
/// Releases a certain number of slots in a semaphore
ResultCode SVC::ReleaseSemaphore(s32* count, Handle handle, s32 release_count) {
LOG_TRACE(Kernel_SVC, "called release_count={}, handle=0x{:08X}", release_count, handle);
std::shared_ptr<Semaphore> semaphore =
kernel.GetCurrentProcess()->handle_table.Get<Semaphore>(handle);
if (semaphore == nullptr)
return ERR_INVALID_HANDLE;
CASCADE_RESULT(*count, semaphore->Release(release_count));
return RESULT_SUCCESS;
}
/// Sets the kernel state
ResultCode SVC::KernelSetState(u32 kernel_state, u32 varg1, u32 varg2) {
switch (static_cast<KernelState>(kernel_state)) {
// This triggers a hardware reboot on real console, since this doesn't make sense
// on emulator, we shutdown instead.
case KernelState::KERNEL_STATE_REBOOT:
system.RequestShutdown();
break;
default:
LOG_ERROR(Kernel_SVC, "Unknown KernelSetState state={} varg1={} varg2={}", kernel_state,
varg1, varg2);
}
return RESULT_SUCCESS;
}
/// Query process memory
ResultCode SVC::QueryProcessMemory(MemoryInfo* memory_info, PageInfo* page_info,
Handle process_handle, u32 addr) {
std::shared_ptr<Process> process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process_handle);
if (process == nullptr)
return ERR_INVALID_HANDLE;
auto vma = process->vm_manager.FindVMA(addr);
if (vma == process->vm_manager.vma_map.end())
return ERR_INVALID_ADDRESS;
auto permissions = vma->second.permissions;
auto state = vma->second.meminfo_state;
// Query(Process)Memory merges vma with neighbours when they share the same state and
// permissions, regardless of their physical mapping.
auto mismatch = [permissions, state](const std::pair<VAddr, Kernel::VirtualMemoryArea>& v) {
return v.second.permissions != permissions || v.second.meminfo_state != state;
};
std::reverse_iterator rvma(vma);
auto lower = std::find_if(rvma, process->vm_manager.vma_map.crend(), mismatch);
--lower;
auto upper = std::find_if(vma, process->vm_manager.vma_map.cend(), mismatch);
--upper;
memory_info->base_address = lower->second.base;
memory_info->permission = static_cast<u32>(permissions);
memory_info->size = upper->second.base + upper->second.size - lower->second.base;
memory_info->state = static_cast<u32>(state);
page_info->flags = 0;
LOG_TRACE(Kernel_SVC, "called process=0x{:08X} addr=0x{:08X}", process_handle, addr);
return RESULT_SUCCESS;
}
/// Query memory
ResultCode SVC::QueryMemory(MemoryInfo* memory_info, PageInfo* page_info, u32 addr) {
return QueryProcessMemory(memory_info, page_info, CurrentProcess, addr);
}
/// Create an event
ResultCode SVC::CreateEvent(Handle* out_handle, u32 reset_type) {
std::shared_ptr<Event> evt =
kernel.CreateEvent(static_cast<ResetType>(reset_type),
fmt::format("event-{:08x}", system.GetRunningCore().GetReg(14)));
CASCADE_RESULT(*out_handle, kernel.GetCurrentProcess()->handle_table.Create(std::move(evt)));
LOG_TRACE(Kernel_SVC, "called reset_type=0x{:08X} : created handle=0x{:08X}", reset_type,
*out_handle);
return RESULT_SUCCESS;
}
/// Duplicates a kernel handle
ResultCode SVC::DuplicateHandle(Handle* out, Handle handle) {
CASCADE_RESULT(*out, kernel.GetCurrentProcess()->handle_table.Duplicate(handle));
LOG_TRACE(Kernel_SVC, "duplicated 0x{:08X} to 0x{:08X}", handle, *out);
return RESULT_SUCCESS;
}
/// Signals an event
ResultCode SVC::SignalEvent(Handle handle) {
LOG_TRACE(Kernel_SVC, "called event=0x{:08X}", handle);
std::shared_ptr<Event> evt = kernel.GetCurrentProcess()->handle_table.Get<Event>(handle);
if (evt == nullptr)
return ERR_INVALID_HANDLE;
evt->Signal();
return RESULT_SUCCESS;
}
/// Clears an event
ResultCode SVC::ClearEvent(Handle handle) {
LOG_TRACE(Kernel_SVC, "called event=0x{:08X}", handle);
std::shared_ptr<Event> evt = kernel.GetCurrentProcess()->handle_table.Get<Event>(handle);
if (evt == nullptr)
return ERR_INVALID_HANDLE;
evt->Clear();
return RESULT_SUCCESS;
}
/// Creates a timer
ResultCode SVC::CreateTimer(Handle* out_handle, u32 reset_type) {
std::shared_ptr<Timer> timer =
kernel.CreateTimer(static_cast<ResetType>(reset_type),
fmt ::format("timer-{:08x}", system.GetRunningCore().GetReg(14)));
CASCADE_RESULT(*out_handle, kernel.GetCurrentProcess()->handle_table.Create(std::move(timer)));
LOG_TRACE(Kernel_SVC, "called reset_type=0x{:08X} : created handle=0x{:08X}", reset_type,
*out_handle);
return RESULT_SUCCESS;
}
/// Clears a timer
ResultCode SVC::ClearTimer(Handle handle) {
LOG_TRACE(Kernel_SVC, "called timer=0x{:08X}", handle);
std::shared_ptr<Timer> timer = kernel.GetCurrentProcess()->handle_table.Get<Timer>(handle);
if (timer == nullptr)
return ERR_INVALID_HANDLE;
timer->Clear();
return RESULT_SUCCESS;
}
/// Starts a timer
ResultCode SVC::SetTimer(Handle handle, s64 initial, s64 interval) {
LOG_TRACE(Kernel_SVC, "called timer=0x{:08X}", handle);
if (initial < 0 || interval < 0) {
return ERR_OUT_OF_RANGE_KERNEL;
}
std::shared_ptr<Timer> timer = kernel.GetCurrentProcess()->handle_table.Get<Timer>(handle);
if (timer == nullptr)
return ERR_INVALID_HANDLE;
timer->Set(initial, interval);
return RESULT_SUCCESS;
}
/// Cancels a timer
ResultCode SVC::CancelTimer(Handle handle) {
LOG_TRACE(Kernel_SVC, "called timer=0x{:08X}", handle);
std::shared_ptr<Timer> timer = kernel.GetCurrentProcess()->handle_table.Get<Timer>(handle);
if (timer == nullptr)
return ERR_INVALID_HANDLE;
timer->Cancel();
return RESULT_SUCCESS;
}
/// Sleep the current thread
void SVC::SleepThread(s64 nanoseconds) {
LOG_TRACE(Kernel_SVC, "called nanoseconds={}", nanoseconds);
ThreadManager& thread_manager = kernel.GetCurrentThreadManager();
// Don't attempt to yield execution if there are no available threads to run,
// this way we avoid a useless reschedule to the idle thread.
if (nanoseconds == 0 && !thread_manager.HaveReadyThreads())
return;
// Sleep current thread and check for next thread to schedule
thread_manager.WaitCurrentThread_Sleep();
// Create an event to wake the thread up after the specified nanosecond delay has passed
thread_manager.GetCurrentThread()->WakeAfterDelay(nanoseconds);
system.PrepareReschedule();
}
/// This returns the total CPU ticks elapsed since the CPU was powered-on
s64 SVC::GetSystemTick() {
// TODO: Use globalTicks here?
s64 result = system.GetRunningCore().GetTimer().GetTicks();
// Advance time to defeat dumb games (like Cubic Ninja) that busy-wait for the frame to end.
// Measured time between two calls on a 9.2 o3DS with Ninjhax 1.1b
system.GetRunningCore().GetTimer().AddTicks(150);
return result;
}
// Returns information of the specified handle
ResultCode SVC::GetHandleInfo(s64* out, Handle handle, u32 type) {
std::shared_ptr<Object> KObject = kernel.GetCurrentProcess()->handle_table.GetGeneric(handle);
if (!KObject) {
return ERR_INVALID_HANDLE;
}
// Not initialized in real kernel, but we don't want to leak memory.
s64 value = 0;
std::shared_ptr<Process> process;
switch (static_cast<HandleInfoType>(type)) {
case HandleInfoType::KPROCESS_ELAPSED_TICKS:
process = DynamicObjectCast<Process>(KObject);
if (process) {
value = process->creation_time_ticks;
}
break;
case HandleInfoType::REFERENCE_COUNT:
// This is the closest approximation we can get without a full KObject impl.
value = KObject.use_count() - 1;
break;
// These values are stubbed in real kernel, they do nothing.
case HandleInfoType::STUBBED_1:
case HandleInfoType::STUBBED_2:
break;
default:
return ERR_INVALID_ENUM_VALUE;
}
*out = value;
return RESULT_SUCCESS;
}
/// Creates a memory block at the specified address with the specified permissions and size
ResultCode SVC::CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32 my_permission,
u32 other_permission) {
if (size % Memory::CITRA_PAGE_SIZE != 0)
return ERR_MISALIGNED_SIZE;
std::shared_ptr<SharedMemory> shared_memory = nullptr;
auto VerifyPermissions = [](MemoryPermission permission) {
// SharedMemory blocks can not be created with Execute permissions
switch (permission) {
case MemoryPermission::None:
case MemoryPermission::Read:
case MemoryPermission::Write:
case MemoryPermission::ReadWrite:
case MemoryPermission::DontCare:
return true;
default:
return false;
}
};
if (!VerifyPermissions(static_cast<MemoryPermission>(my_permission)) ||
!VerifyPermissions(static_cast<MemoryPermission>(other_permission)))
return ERR_INVALID_COMBINATION;
// TODO(Subv): Processes with memory type APPLICATION are not allowed
// to create memory blocks with addr = 0, any attempts to do so
// should return error 0xD92007EA.
if ((addr < Memory::PROCESS_IMAGE_VADDR || addr + size > Memory::SHARED_MEMORY_VADDR_END) &&
addr != 0) {
return ERR_INVALID_ADDRESS;
}
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
// When trying to create a memory block with address = 0,
// if the process has the Shared Device Memory flag in the exheader,
// then we have to allocate from the same region as the caller process instead of the BASE
// region.
MemoryRegion region = MemoryRegion::BASE;
if (addr == 0 && current_process->flags.shared_device_mem)
region = current_process->flags.memory_region;
CASCADE_RESULT(shared_memory,
kernel.CreateSharedMemory(
current_process.get(), size, static_cast<MemoryPermission>(my_permission),
static_cast<MemoryPermission>(other_permission), addr, region));
CASCADE_RESULT(*out_handle, current_process->handle_table.Create(std::move(shared_memory)));
LOG_WARNING(Kernel_SVC, "called addr=0x{:08X}", addr);
return RESULT_SUCCESS;
}
ResultCode SVC::CreatePort(Handle* server_port, Handle* client_port, VAddr name_address,
u32 max_sessions) {
// TODO(Subv): Implement named ports.
ASSERT_MSG(name_address == 0, "Named ports are currently unimplemented");
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
auto [server, client] = kernel.CreatePortPair(max_sessions);
CASCADE_RESULT(*client_port, current_process->handle_table.Create(std::move(client)));
// Note: The 3DS kernel also leaks the client port handle if the server port handle fails to be
// created.
CASCADE_RESULT(*server_port, current_process->handle_table.Create(std::move(server)));
LOG_TRACE(Kernel_SVC, "called max_sessions={}", max_sessions);
return RESULT_SUCCESS;
}
ResultCode SVC::CreateSessionToPort(Handle* out_client_session, Handle client_port_handle) {
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
std::shared_ptr<ClientPort> client_port =
current_process->handle_table.Get<ClientPort>(client_port_handle);
if (client_port == nullptr)
return ERR_INVALID_HANDLE;
CASCADE_RESULT(auto session, client_port->Connect());
CASCADE_RESULT(*out_client_session, current_process->handle_table.Create(std::move(session)));
return RESULT_SUCCESS;
}
ResultCode SVC::CreateSession(Handle* server_session, Handle* client_session) {
auto [server, client] = kernel.CreateSessionPair();
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
CASCADE_RESULT(*server_session, current_process->handle_table.Create(std::move(server)));
CASCADE_RESULT(*client_session, current_process->handle_table.Create(std::move(client)));
LOG_TRACE(Kernel_SVC, "called");
return RESULT_SUCCESS;
}
ResultCode SVC::AcceptSession(Handle* out_server_session, Handle server_port_handle) {
std::shared_ptr<Process> current_process = kernel.GetCurrentProcess();
std::shared_ptr<ServerPort> server_port =
current_process->handle_table.Get<ServerPort>(server_port_handle);
if (server_port == nullptr)
return ERR_INVALID_HANDLE;
CASCADE_RESULT(auto session, server_port->Accept());
CASCADE_RESULT(*out_server_session, current_process->handle_table.Create(std::move(session)));
return RESULT_SUCCESS;
}
static void CopyStringPart(char* out, const char* in, size_t offset, size_t max_length) {
size_t str_size = strlen(in);
if (offset < str_size) {
strncpy(out, in + offset, max_length - 1);
out[max_length - 1] = '\0';
} else {
out[0] = '\0';
}
}
ResultCode SVC::GetSystemInfo(s64* out, u32 type, s32 param) {
LOG_TRACE(Kernel_SVC, "called type={} param={}", type, param);
switch ((SystemInfoType)type) {
case SystemInfoType::REGION_MEMORY_USAGE:
switch ((SystemInfoMemUsageRegion)param) {
case SystemInfoMemUsageRegion::ALL:
*out = kernel.GetMemoryRegion(MemoryRegion::APPLICATION)->used +
kernel.GetMemoryRegion(MemoryRegion::SYSTEM)->used +
kernel.GetMemoryRegion(MemoryRegion::BASE)->used;
break;
case SystemInfoMemUsageRegion::APPLICATION:
*out = kernel.GetMemoryRegion(MemoryRegion::APPLICATION)->used;
break;
case SystemInfoMemUsageRegion::SYSTEM:
*out = kernel.GetMemoryRegion(MemoryRegion::SYSTEM)->used;
break;
case SystemInfoMemUsageRegion::BASE:
*out = kernel.GetMemoryRegion(MemoryRegion::BASE)->used;
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetSystemInfo type=0 region: param={}", param);
*out = 0;
break;
}
break;
case SystemInfoType::KERNEL_ALLOCATED_PAGES:
LOG_ERROR(Kernel_SVC, "unimplemented GetSystemInfo type=2 param={}", param);
*out = 0;
break;
case SystemInfoType::KERNEL_SPAWNED_PIDS:
*out = 5;
break;
case SystemInfoType::NEW_3DS_INFO:
// The actual subtypes are not implemented, homebrew just check
// this doesn't return an error in n3ds to know the system type
LOG_ERROR(Kernel_SVC, "unimplemented GetSystemInfo type=65537 param={}", param);
*out = 0;
return (system.GetNumCores() == 4) ? RESULT_SUCCESS : ERR_INVALID_ENUM_VALUE;
case SystemInfoType::CITRA_INFORMATION:
switch ((SystemInfoCitraInformation)param) {
case SystemInfoCitraInformation::IS_CITRA:
*out = 1;
break;
case SystemInfoCitraInformation::BUILD_NAME:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_name, 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_VERSION:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_version, 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 1, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART3:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 2, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART4:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 3, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_BRANCH_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_branch,
(sizeof(s64) - 1) * 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_BRANCH_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_branch,
(sizeof(s64) - 1) * 1, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_DESCRIPTION_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_desc, (sizeof(s64) - 1) * 0,
sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_DESCRIPTION_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_desc, (sizeof(s64) - 1) * 1,
sizeof(s64));
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetSystemInfo citra info param={}", param);
*out = 0;
break;
}
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetSystemInfo type={} param={}", type, param);
*out = 0;
break;
}
// This function never returns an error, even if invalid parameters were passed.
return RESULT_SUCCESS;
}
ResultCode SVC::GetProcessInfo(s64* out, Handle process_handle, u32 type) {
LOG_TRACE(Kernel_SVC, "called process=0x{:08X} type={}", process_handle, type);
std::shared_ptr<Process> process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process_handle);
if (process == nullptr)
return ERR_INVALID_HANDLE;
switch (static_cast<ProcessInfoType>(type)) {
case ProcessInfoType::PRIVATE_AND_SHARED_USED_MEMORY:
case ProcessInfoType::PRIVATE_SHARED_SUPERVISOR_HANDLE_USED_MEMORY:
// TODO(yuriks): Type 0 returns a slightly higher number than type 2, but I'm not sure
// what's the difference between them.
*out = process->memory_used;
if (*out % Memory::CITRA_PAGE_SIZE != 0) {
LOG_ERROR(Kernel_SVC, "called, memory size not page-aligned");
return ERR_MISALIGNED_SIZE;
}
break;
case ProcessInfoType::SUPERVISOR_AND_HANDLE_USED_MEMORY:
case ProcessInfoType::SUPERVISOR_AND_HANDLE_USED_MEMORY2:
case ProcessInfoType::USED_HANDLE_COUNT:
case ProcessInfoType::HIGHEST_HANDLE_COUNT:
case ProcessInfoType::KPROCESS_0X234:
case ProcessInfoType::THREAD_COUNT:
case ProcessInfoType::MAX_THREAD_AMOUNT:
// These are valid, but not implemented yet
LOG_ERROR(Kernel_SVC, "unimplemented GetProcessInfo type={}", type);
break;
case ProcessInfoType::LINEAR_BASE_ADDR_OFFSET:
*out = Memory::FCRAM_PADDR - process->GetLinearHeapAreaAddress();
break;
case ProcessInfoType::QTM_MEMORY_BLOCK_CONVERSION_OFFSET:
case ProcessInfoType::QTM_MEMORY_ADDRESS:
case ProcessInfoType::QTM_MEMORY_SIZE:
// These return a different error value than higher invalid values
LOG_ERROR(Kernel_SVC, "unknown GetProcessInfo type={}", type);
return ERR_NOT_IMPLEMENTED;
// Here start the custom ones, taken from Luma3DS for 3GX support
case ProcessInfoType::LUMA_CUSTOM_PROCESS_NAME:
// Get process name
strncpy(reinterpret_cast<char*>(out), process->codeset->GetName().c_str(), 8);
break;
case ProcessInfoType::LUMA_CUSTOM_PROCESS_TITLE_ID:
// Get process TID
*out = process->codeset->program_id;
break;
case ProcessInfoType::LUMA_CUSTOM_TEXT_SIZE:
*out = process->codeset->CodeSegment().size;
break;
case ProcessInfoType::LUMA_CUSTOM_RODATA_SIZE:
*out = process->codeset->RODataSegment().size;
break;
case ProcessInfoType::LUMA_CUSTOM_DATA_SIZE:
*out = process->codeset->DataSegment().size;
break;
case ProcessInfoType::LUMA_CUSTOM_TEXT_ADDR:
*out = process->codeset->CodeSegment().addr;
break;
case ProcessInfoType::LUMA_CUSTOM_RODATA_ADDR:
*out = process->codeset->RODataSegment().addr;
break;
case ProcessInfoType::LUMA_CUSTOM_DATA_ADDR:
*out = process->codeset->DataSegment().addr;
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetProcessInfo type={}", type);
return ERR_INVALID_ENUM_VALUE;
}
return RESULT_SUCCESS;
}
ResultCode SVC::GetThreadInfo(s64* out, Handle thread_handle, u32 type) {
LOG_TRACE(Kernel_SVC, "called thread=0x{:08X} type={}", thread_handle, type);
std::shared_ptr<Thread> thread =
kernel.GetCurrentProcess()->handle_table.Get<Thread>(thread_handle);
if (thread == nullptr) {
return ERR_INVALID_HANDLE;
}
switch (type) {
case 0x10000:
*out = static_cast<s64>(thread->GetTLSAddress());
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetThreadInfo type={}", type);
return ERR_INVALID_ENUM_VALUE;
}
return RESULT_SUCCESS;
}
ResultCode SVC::GetProcessList(s32* process_count, VAddr out_process_array,
s32 out_process_array_count) {
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), out_process_array)) {
return ERR_INVALID_POINTER;
}
s32 written = 0;
for (const auto process : kernel.GetProcessList()) {
if (written >= out_process_array_count) {
break;
}
if (process) {
memory.Write32(out_process_array + written++ * sizeof(u32), process->process_id);
}
}
*process_count = written;
return RESULT_SUCCESS;
}
ResultCode SVC::InvalidateInstructionCacheRange(u32 addr, u32 size) {
Core::GetRunningCore().InvalidateCacheRange(addr, size);
return RESULT_SUCCESS;
}
ResultCode SVC::InvalidateEntireInstructionCache() {
Core::GetRunningCore().ClearInstructionCache();
return RESULT_SUCCESS;
}
u32 SVC::ConvertVaToPa(u32 addr) {
auto vma = kernel.GetCurrentProcess()->vm_manager.FindVMA(addr);
if (vma == kernel.GetCurrentProcess()->vm_manager.vma_map.end() ||
vma->second.type != VMAType::BackingMemory) {
return 0;
}
return kernel.memory.GetFCRAMOffset(vma->second.backing_memory.GetPtr() + addr -
vma->second.base) +
Memory::FCRAM_PADDR;
}
ResultCode SVC::MapProcessMemoryEx(Handle dst_process_handle, u32 dst_address,
Handle src_process_handle, u32 src_address, u32 size) {
std::shared_ptr<Process> dst_process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(dst_process_handle);
std::shared_ptr<Process> src_process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(src_process_handle);
if (dst_process == nullptr || src_process == nullptr) {
return ERR_INVALID_HANDLE;
}
if (size & 0xFFF) {
size = (size & ~0xFFF) + Memory::CITRA_PAGE_SIZE;
}
// Only linear memory supported
auto vma = src_process->vm_manager.FindVMA(src_address);
if (vma == src_process->vm_manager.vma_map.end() ||
vma->second.type != VMAType::BackingMemory ||
vma->second.meminfo_state != MemoryState::Continuous) {
return ERR_INVALID_ADDRESS;
}
u32 offset = src_address - vma->second.base;
if (offset + size > vma->second.size) {
return ERR_INVALID_ADDRESS;
}
auto vma_res = dst_process->vm_manager.MapBackingMemory(
dst_address,
memory.GetFCRAMRef(vma->second.backing_memory.GetPtr() + offset -
kernel.memory.GetFCRAMPointer(0)),
size, Kernel::MemoryState::Continuous);
if (!vma_res.Succeeded()) {
return ERR_INVALID_ADDRESS_STATE;
}
dst_process->vm_manager.Reprotect(vma_res.Unwrap(), Kernel::VMAPermission::ReadWriteExecute);
return RESULT_SUCCESS;
}
ResultCode SVC::UnmapProcessMemoryEx(Handle process, u32 dst_address, u32 size) {
std::shared_ptr<Process> dst_process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process);
if (dst_process == nullptr) {
return ERR_INVALID_HANDLE;
}
if (size & 0xFFF) {
size = (size & ~0xFFF) + Memory::CITRA_PAGE_SIZE;
}
// Only linear memory supported
auto vma = dst_process->vm_manager.FindVMA(dst_address);
if (vma == dst_process->vm_manager.vma_map.end() ||
vma->second.type != VMAType::BackingMemory ||
vma->second.meminfo_state != MemoryState::Continuous) {
return ERR_INVALID_ADDRESS;
}
dst_process->vm_manager.UnmapRange(dst_address, size);
return RESULT_SUCCESS;
}
ResultCode SVC::ControlProcess(Handle process_handle, u32 process_OP, u32 varg2, u32 varg3) {
std::shared_ptr<Process> process =
kernel.GetCurrentProcess()->handle_table.Get<Process>(process_handle);
if (process == nullptr) {
return ERR_INVALID_HANDLE;
}
switch (static_cast<ControlProcessOP>(process_OP)) {
case ControlProcessOP::PROCESSOP_SET_MMU_TO_RWX: {
for (auto it = process->vm_manager.vma_map.cbegin();
it != process->vm_manager.vma_map.cend(); it++) {
if (it->second.meminfo_state != MemoryState::Free)
process->vm_manager.Reprotect(it, Kernel::VMAPermission::ReadWriteExecute);
}
return RESULT_SUCCESS;
}
case ControlProcessOP::PROCESSOP_GET_ON_MEMORY_CHANGE_EVENT: {
auto plgldr = Service::PLGLDR::GetService(system);
if (!plgldr) {
return ERR_NOT_FOUND;
}
ResultVal<Handle> out = plgldr->GetMemoryChangedHandle(kernel);
if (out.Failed()) {
return out.Code();
}
memory.Write32(varg2, out.Unwrap());
return RESULT_SUCCESS;
}
case ControlProcessOP::PROCESSOP_SCHEDULE_THREADS_WITHOUT_TLS_MAGIC: {
for (u32 core_id = 0; core_id < system.GetNumCores(); core_id++) {
auto& thread_list = kernel.GetThreadManager(core_id).GetThreadList();
for (auto& thread : thread_list) {
if (thread->owner_process.lock() != process) {
continue;
}
if (memory.Read32(thread.get()->GetTLSAddress()) == varg3) {
continue;
}
if (thread.get()->thread_id ==
kernel.GetCurrentThreadManager().GetCurrentThread()->thread_id) {
continue;
}
thread.get()->can_schedule = !varg2;
}
}
return RESULT_SUCCESS;
}
case ControlProcessOP::PROCESSOP_DISABLE_CREATE_THREAD_RESTRICTIONS: {
process->no_thread_restrictions = varg2 == 1;
return RESULT_SUCCESS;
}
case ControlProcessOP::PROCESSOP_GET_ALL_HANDLES:
case ControlProcessOP::PROCESSOP_GET_PA_FROM_VA:
case ControlProcessOP::PROCESSOP_SIGNAL_ON_EXIT:
case ControlProcessOP::PROCESSOP_SCHEDULE_THREADS:
default:
LOG_ERROR(Kernel_SVC, "Unknown ControlProcessOp type={}", process_OP);
return ERR_NOT_IMPLEMENTED;
}
}
const std::array<SVC::FunctionDef, 180> SVC::SVC_Table{{
{0x00, nullptr, "Unknown"},
{0x01, &SVC::Wrap<&SVC::ControlMemory>, "ControlMemory"},
{0x02, &SVC::Wrap<&SVC::QueryMemory>, "QueryMemory"},
{0x03, &SVC::ExitProcess, "ExitProcess"},
{0x04, nullptr, "GetProcessAffinityMask"},
{0x05, nullptr, "SetProcessAffinityMask"},
{0x06, nullptr, "GetProcessIdealProcessor"},
{0x07, nullptr, "SetProcessIdealProcessor"},
{0x08, &SVC::Wrap<&SVC::CreateThread>, "CreateThread"},
{0x09, &SVC::ExitThread, "ExitThread"},
{0x0A, &SVC::Wrap<&SVC::SleepThread>, "SleepThread"},
{0x0B, &SVC::Wrap<&SVC::GetThreadPriority>, "GetThreadPriority"},
{0x0C, &SVC::Wrap<&SVC::SetThreadPriority>, "SetThreadPriority"},
{0x0D, nullptr, "GetThreadAffinityMask"},
{0x0E, nullptr, "SetThreadAffinityMask"},
{0x0F, nullptr, "GetThreadIdealProcessor"},
{0x10, nullptr, "SetThreadIdealProcessor"},
{0x11, nullptr, "GetCurrentProcessorNumber"},
{0x12, nullptr, "Run"},
{0x13, &SVC::Wrap<&SVC::CreateMutex>, "CreateMutex"},
{0x14, &SVC::Wrap<&SVC::ReleaseMutex>, "ReleaseMutex"},
{0x15, &SVC::Wrap<&SVC::CreateSemaphore>, "CreateSemaphore"},
{0x16, &SVC::Wrap<&SVC::ReleaseSemaphore>, "ReleaseSemaphore"},
{0x17, &SVC::Wrap<&SVC::CreateEvent>, "CreateEvent"},
{0x18, &SVC::Wrap<&SVC::SignalEvent>, "SignalEvent"},
{0x19, &SVC::Wrap<&SVC::ClearEvent>, "ClearEvent"},
{0x1A, &SVC::Wrap<&SVC::CreateTimer>, "CreateTimer"},
{0x1B, &SVC::Wrap<&SVC::SetTimer>, "SetTimer"},
{0x1C, &SVC::Wrap<&SVC::CancelTimer>, "CancelTimer"},
{0x1D, &SVC::Wrap<&SVC::ClearTimer>, "ClearTimer"},
{0x1E, &SVC::Wrap<&SVC::CreateMemoryBlock>, "CreateMemoryBlock"},
{0x1F, &SVC::Wrap<&SVC::MapMemoryBlock>, "MapMemoryBlock"},
{0x20, &SVC::Wrap<&SVC::UnmapMemoryBlock>, "UnmapMemoryBlock"},
{0x21, &SVC::Wrap<&SVC::CreateAddressArbiter>, "CreateAddressArbiter"},
{0x22, &SVC::Wrap<&SVC::ArbitrateAddress>, "ArbitrateAddress"},
{0x23, &SVC::Wrap<&SVC::CloseHandle>, "CloseHandle"},
{0x24, &SVC::Wrap<&SVC::WaitSynchronization1>, "WaitSynchronization1"},
{0x25, &SVC::Wrap<&SVC::WaitSynchronizationN>, "WaitSynchronizationN"},
{0x26, nullptr, "SignalAndWait"},
{0x27, &SVC::Wrap<&SVC::DuplicateHandle>, "DuplicateHandle"},
{0x28, &SVC::Wrap<&SVC::GetSystemTick>, "GetSystemTick"},
{0x29, &SVC::Wrap<&SVC::GetHandleInfo>, "GetHandleInfo"},
{0x2A, &SVC::Wrap<&SVC::GetSystemInfo>, "GetSystemInfo"},
{0x2B, &SVC::Wrap<&SVC::GetProcessInfo>, "GetProcessInfo"},
{0x2C, &SVC::Wrap<&SVC::GetThreadInfo>, "GetThreadInfo"},
{0x2D, &SVC::Wrap<&SVC::ConnectToPort>, "ConnectToPort"},
{0x2E, nullptr, "SendSyncRequest1"},
{0x2F, nullptr, "SendSyncRequest2"},
{0x30, nullptr, "SendSyncRequest3"},
{0x31, nullptr, "SendSyncRequest4"},
{0x32, &SVC::Wrap<&SVC::SendSyncRequest>, "SendSyncRequest"},
{0x33, &SVC::Wrap<&SVC::OpenProcess>, "OpenProcess"},
{0x34, &SVC::Wrap<&SVC::OpenThread>, "OpenThread"},
{0x35, &SVC::Wrap<&SVC::GetProcessId>, "GetProcessId"},
{0x36, &SVC::Wrap<&SVC::GetProcessIdOfThread>, "GetProcessIdOfThread"},
{0x37, &SVC::Wrap<&SVC::GetThreadId>, "GetThreadId"},
{0x38, &SVC::Wrap<&SVC::GetResourceLimit>, "GetResourceLimit"},
{0x39, &SVC::Wrap<&SVC::GetResourceLimitLimitValues>, "GetResourceLimitLimitValues"},
{0x3A, &SVC::Wrap<&SVC::GetResourceLimitCurrentValues>, "GetResourceLimitCurrentValues"},
{0x3B, nullptr, "GetThreadContext"},
{0x3C, &SVC::Wrap<&SVC::Break>, "Break"},
{0x3D, &SVC::Wrap<&SVC::OutputDebugString>, "OutputDebugString"},
{0x3E, nullptr, "ControlPerformanceCounter"},
{0x3F, nullptr, "Unknown"},
{0x40, nullptr, "Unknown"},
{0x41, nullptr, "Unknown"},
{0x42, nullptr, "Unknown"},
{0x43, nullptr, "Unknown"},
{0x44, nullptr, "Unknown"},
{0x45, nullptr, "Unknown"},
{0x46, nullptr, "Unknown"},
{0x47, &SVC::Wrap<&SVC::CreatePort>, "CreatePort"},
{0x48, &SVC::Wrap<&SVC::CreateSessionToPort>, "CreateSessionToPort"},
{0x49, &SVC::Wrap<&SVC::CreateSession>, "CreateSession"},
{0x4A, &SVC::Wrap<&SVC::AcceptSession>, "AcceptSession"},
{0x4B, nullptr, "ReplyAndReceive1"},
{0x4C, nullptr, "ReplyAndReceive2"},
{0x4D, nullptr, "ReplyAndReceive3"},
{0x4E, nullptr, "ReplyAndReceive4"},
{0x4F, &SVC::Wrap<&SVC::ReplyAndReceive>, "ReplyAndReceive"},
{0x50, nullptr, "BindInterrupt"},
{0x51, nullptr, "UnbindInterrupt"},
{0x52, nullptr, "InvalidateProcessDataCache"},
{0x53, nullptr, "StoreProcessDataCache"},
{0x54, nullptr, "FlushProcessDataCache"},
{0x55, nullptr, "StartInterProcessDma"},
{0x56, nullptr, "StopDma"},
{0x57, nullptr, "GetDmaState"},
{0x58, nullptr, "RestartDma"},
{0x59, nullptr, "SetGpuProt"},
{0x5A, nullptr, "SetWifiEnabled"},
{0x5B, nullptr, "Unknown"},
{0x5C, nullptr, "Unknown"},
{0x5D, nullptr, "Unknown"},
{0x5E, nullptr, "Unknown"},
{0x5F, nullptr, "Unknown"},
{0x60, nullptr, "DebugActiveProcess"},
{0x61, nullptr, "BreakDebugProcess"},
{0x62, nullptr, "TerminateDebugProcess"},
{0x63, nullptr, "GetProcessDebugEvent"},
{0x64, nullptr, "ContinueDebugEvent"},
{0x65, &SVC::Wrap<&SVC::GetProcessList>, "GetProcessList"},
{0x66, nullptr, "GetThreadList"},
{0x67, nullptr, "GetDebugThreadContext"},
{0x68, nullptr, "SetDebugThreadContext"},
{0x69, nullptr, "QueryDebugProcessMemory"},
{0x6A, nullptr, "ReadProcessMemory"},
{0x6B, nullptr, "WriteProcessMemory"},
{0x6C, nullptr, "SetHardwareBreakPoint"},
{0x6D, nullptr, "GetDebugThreadParam"},
{0x6E, nullptr, "Unknown"},
{0x6F, nullptr, "Unknown"},
{0x70, nullptr, "ControlProcessMemory"},
{0x71, nullptr, "MapProcessMemory"},
{0x72, nullptr, "UnmapProcessMemory"},
{0x73, nullptr, "CreateCodeSet"},
{0x74, nullptr, "RandomStub"},
{0x75, nullptr, "CreateProcess"},
{0x76, nullptr, "TerminateProcess"},
{0x77, nullptr, "SetProcessResourceLimits"},
{0x78, nullptr, "CreateResourceLimit"},
{0x79, nullptr, "SetResourceLimitValues"},
{0x7A, nullptr, "AddCodeSegment"},
{0x7B, nullptr, "Backdoor"},
{0x7C, &SVC::Wrap<&SVC::KernelSetState>, "KernelSetState"},
{0x7D, &SVC::Wrap<&SVC::QueryProcessMemory>, "QueryProcessMemory"},
// Custom SVCs
{0x7E, nullptr, "Unused"},
{0x7F, nullptr, "Unused"},
{0x80, nullptr, "CustomBackdoor"},
{0x81, nullptr, "Unused"},
{0x82, nullptr, "Unused"},
{0x83, nullptr, "Unused"},
{0x84, nullptr, "Unused"},
{0x85, nullptr, "Unused"},
{0x86, nullptr, "Unused"},
{0x87, nullptr, "Unused"},
{0x88, nullptr, "Unused"},
{0x89, nullptr, "Unused"},
{0x8A, nullptr, "Unused"},
{0x8B, nullptr, "Unused"},
{0x8C, nullptr, "Unused"},
{0x8D, nullptr, "Unused"},
{0x8E, nullptr, "Unused"},
{0x8F, nullptr, "Unused"},
{0x90, &SVC::Wrap<&SVC::ConvertVaToPa>, "ConvertVaToPa"},
{0x91, nullptr, "FlushDataCacheRange"},
{0x92, nullptr, "FlushEntireDataCache"},
{0x93, &SVC::Wrap<&SVC::InvalidateInstructionCacheRange>, "InvalidateInstructionCacheRange"},
{0x94, &SVC::Wrap<&SVC::InvalidateEntireInstructionCache>, "InvalidateEntireInstructionCache"},
{0x95, nullptr, "Unused"},
{0x96, nullptr, "Unused"},
{0x97, nullptr, "Unused"},
{0x98, nullptr, "Unused"},
{0x99, nullptr, "Unused"},
{0x9A, nullptr, "Unused"},
{0x9B, nullptr, "Unused"},
{0x9C, nullptr, "Unused"},
{0x9D, nullptr, "Unused"},
{0x9E, nullptr, "Unused"},
{0x9F, nullptr, "Unused"},
{0xA0, &SVC::Wrap<&SVC::MapProcessMemoryEx>, "MapProcessMemoryEx"},
{0xA1, &SVC::Wrap<&SVC::UnmapProcessMemoryEx>, "UnmapProcessMemoryEx"},
{0xA2, nullptr, "ControlMemoryEx"},
{0xA3, nullptr, "ControlMemoryUnsafe"},
{0xA4, nullptr, "Unused"},
{0xA5, nullptr, "Unused"},
{0xA6, nullptr, "Unused"},
{0xA7, nullptr, "Unused"},
{0xA8, nullptr, "Unused"},
{0xA9, nullptr, "Unused"},
{0xAA, nullptr, "Unused"},
{0xAB, nullptr, "Unused"},
{0xAC, nullptr, "Unused"},
{0xAD, nullptr, "Unused"},
{0xAE, nullptr, "Unused"},
{0xAF, nullptr, "Unused"},
{0xB0, nullptr, "ControlService"},
{0xB1, nullptr, "CopyHandle"},
{0xB2, nullptr, "TranslateHandle"},
{0xB3, &SVC::Wrap<&SVC::ControlProcess>, "ControlProcess"},
}};
const SVC::FunctionDef* SVC::GetSVCInfo(u32 func_num) {
if (func_num >= SVC_Table.size()) {
LOG_ERROR(Kernel_SVC, "unknown svc=0x{:02X}", func_num);
return nullptr;
}
return &SVC_Table[func_num];
}
MICROPROFILE_DEFINE(Kernel_SVC, "Kernel", "SVC", MP_RGB(70, 200, 70));
void SVC::CallSVC(u32 immediate) {
MICROPROFILE_SCOPE(Kernel_SVC);
// Lock the global kernel mutex when we enter the kernel HLE.
std::lock_guard lock{HLE::g_hle_lock};
DEBUG_ASSERT_MSG(kernel.GetCurrentProcess()->status == ProcessStatus::Running,
"Running threads from exiting processes is unimplemented");
const FunctionDef* info = GetSVCInfo(immediate);
LOG_TRACE(Kernel_SVC, "calling {}", info->name);
if (info) {
if (info->func) {
(this->*(info->func))();
} else {
LOG_ERROR(Kernel_SVC, "unimplemented SVC function {}(..)", info->name);
}
}
}
SVC::SVC(Core::System& system) : system(system), kernel(system.Kernel()), memory(system.Memory()) {}
u32 SVC::GetReg(std::size_t n) {
return system.GetRunningCore().GetReg(static_cast<int>(n));
}
void SVC::SetReg(std::size_t n, u32 value) {
system.GetRunningCore().SetReg(static_cast<int>(n), value);
}
SVCContext::SVCContext(Core::System& system) : impl(std::make_unique<SVC>(system)) {}
SVCContext::~SVCContext() = default;
void SVCContext::CallSVC(u32 immediate) {
impl->CallSVC(immediate);
}
} // namespace Kernel
SERIALIZE_EXPORT_IMPL(Kernel::SVC_SyncCallback)
SERIALIZE_EXPORT_IMPL(Kernel::SVC_IPCCallback)
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