mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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234 lines
11 KiB
C++
234 lines
11 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "pm_boot_mode_service.hpp"
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#include "pm_debug_monitor_service.hpp"
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#include "pm_info_service.hpp"
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#include "pm_shell_service.hpp"
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#include "impl/pm_process_manager.hpp"
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namespace ams {
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namespace pm {
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namespace {
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constexpr u32 PrivilegedFileAccessHeader[0x1C / sizeof(u32)] = {0x00000001, 0x00000000, 0x80000000, 0x0000001C, 0x00000000, 0x0000001C, 0x00000000};
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constexpr u32 PrivilegedFileAccessControl[0x2C / sizeof(u32)] = {0x00000001, 0x00000000, 0x80000000, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF};
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constexpr u8 PrivilegedServiceAccessControl[] = {0x80, '*', 0x00, '*'};
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constexpr size_t ProcessCountMax = 0x40;
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/* This uses debugging SVCs to retrieve a process's program id. */
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ncm::ProgramId GetProcessProgramId(os::ProcessId process_id) {
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/* Get a debug handle. */
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svc::Handle debug_handle;
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R_ABORT_UNLESS(svc::DebugActiveProcess(std::addressof(debug_handle), process_id.value));
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ON_SCOPE_EXIT { R_ABORT_UNLESS(svc::CloseHandle(debug_handle)); };
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/* Loop until we get the event that tells us about the process. */
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svc::DebugEventInfo d;
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while (true) {
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R_ABORT_UNLESS(svc::GetDebugEvent(std::addressof(d), debug_handle));
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if (d.type == svc::DebugEvent_CreateProcess) {
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return ncm::ProgramId{d.info.create_process.program_id};
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}
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}
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}
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/* This works around a bug fixed by FS in 4.0.0. */
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/* Not doing so will cause KIPs with higher process IDs than 7 to be unable to use filesystem services. */
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/* It also registers privileged processes with SM, so that their program ids can be known. */
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void RegisterPrivilegedProcess(os::ProcessId process_id, ncm::ProgramId program_id) {
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fsprUnregisterProgram(process_id.value);
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fsprRegisterProgram(process_id.value, process_id.value, NcmStorageId_BuiltInSystem, PrivilegedFileAccessHeader, sizeof(PrivilegedFileAccessHeader), PrivilegedFileAccessControl, sizeof(PrivilegedFileAccessControl));
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sm::manager::UnregisterProcess(process_id);
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sm::manager::RegisterProcess(process_id, program_id, cfg::OverrideStatus{}, PrivilegedServiceAccessControl, sizeof(PrivilegedServiceAccessControl), PrivilegedServiceAccessControl, sizeof(PrivilegedServiceAccessControl));
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}
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void RegisterPrivilegedProcesses() {
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/* Get privileged process range. */
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os::ProcessId min_priv_process_id = os::InvalidProcessId, max_priv_process_id = os::InvalidProcessId;
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cfg::GetInitialProcessRange(std::addressof(min_priv_process_id), std::addressof(max_priv_process_id));
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/* Get current process id/program id. */
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const auto cur_process_id = os::GetCurrentProcessId();
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const auto cur_program_id = os::GetCurrentProgramId();
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/* Get list of processes, register all privileged ones. */
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s32 num_pids;
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os::ProcessId pids[ProcessCountMax];
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R_ABORT_UNLESS(svc::GetProcessList(std::addressof(num_pids), reinterpret_cast<u64 *>(pids), ProcessCountMax));
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for (s32 i = 0; i < num_pids; i++) {
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if (min_priv_process_id <= pids[i] && pids[i] <= max_priv_process_id) {
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RegisterPrivilegedProcess(pids[i], pids[i] == cur_process_id ? cur_program_id : GetProcessProgramId(pids[i]));
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}
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}
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}
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}
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namespace {
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/* pm:shell, pm:dmnt, pm:bm, pm:info. */
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enum PortIndex {
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PortIndex_Shell,
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PortIndex_DebugMonitor,
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PortIndex_BootMode,
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PortIndex_Information,
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PortIndex_Count,
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};
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using ServerOptions = sf::hipc::DefaultServerManagerOptions;
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constexpr sm::ServiceName ShellServiceName = sm::ServiceName::Encode("pm:shell");
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constexpr size_t ShellMaxSessions = 8; /* Official maximum is 3. */
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constexpr sm::ServiceName DebugMonitorServiceName = sm::ServiceName::Encode("pm:dmnt");
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constexpr size_t DebugMonitorMaxSessions = 16;
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constexpr sm::ServiceName BootModeServiceName = sm::ServiceName::Encode("pm:bm");
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constexpr size_t BootModeMaxSessions = 8; /* Official maximum is 4. */
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constexpr sm::ServiceName InformationServiceName = sm::ServiceName::Encode("pm:info");
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constexpr size_t InformationMaxSessions = 48 - (ShellMaxSessions + DebugMonitorMaxSessions + BootModeMaxSessions);
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static_assert(InformationMaxSessions >= 16, "InformationMaxSessions");
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constexpr size_t MaxSessions = ShellMaxSessions + DebugMonitorMaxSessions + BootModeMaxSessions + InformationMaxSessions;
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static_assert(MaxSessions == 48, "MaxSessions");
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class ServerManager final : public sf::hipc::ServerManager<PortIndex_Count, ServerOptions, MaxSessions> {
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private:
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virtual ams::Result OnNeedsToAccept(int port_index, Server *server) override;
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};
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ServerManager g_server_manager;
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/* NOTE: Nintendo only uses an unmanaged object for boot mode service, but no pm service has any class members/state, so we'll do it for all. */
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sf::UnmanagedServiceObject<pm::impl::IShellInterface, pm::ShellService> g_shell_service;
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sf::UnmanagedServiceObject<pm::impl::IDeprecatedShellInterface, pm::ShellService> g_deprecated_shell_service;
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sf::UnmanagedServiceObject<pm::impl::IDebugMonitorInterface, pm::DebugMonitorService> g_dmnt_service;
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sf::UnmanagedServiceObject<pm::impl::IDeprecatedDebugMonitorInterface, pm::DebugMonitorService> g_deprecated_dmnt_service;
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sf::UnmanagedServiceObject<pm::impl::IBootModeInterface, pm::BootModeService> g_boot_mode_service;
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sf::UnmanagedServiceObject<pm::impl::IInformationInterface, pm::InformationService> g_information_service;
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ams::Result ServerManager::OnNeedsToAccept(int port_index, Server *server) {
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switch (port_index) {
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case PortIndex_Shell:
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if (hos::GetVersion() >= hos::Version_5_0_0) {
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return this->AcceptImpl(server, g_shell_service.GetShared());
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} else {
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return this->AcceptImpl(server, g_deprecated_shell_service.GetShared());
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}
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case PortIndex_DebugMonitor:
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if (hos::GetVersion() >= hos::Version_5_0_0) {
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return this->AcceptImpl(server, g_dmnt_service.GetShared());
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} else {
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return this->AcceptImpl(server, g_deprecated_dmnt_service.GetShared());
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}
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case PortIndex_BootMode:
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return this->AcceptImpl(server, g_boot_mode_service.GetShared());
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case PortIndex_Information:
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return this->AcceptImpl(server, g_information_service.GetShared());
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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void RegisterServices() {
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/* NOTE: Extra sessions have been added to pm:bm and pm:info to facilitate access by the rest of stratosphere. */
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Shell, ShellServiceName, ShellMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_DebugMonitor, DebugMonitorServiceName, DebugMonitorMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_BootMode, BootModeServiceName, BootModeMaxSessions));
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R_ABORT_UNLESS(g_server_manager.RegisterServer(PortIndex_Information, InformationServiceName, InformationMaxSessions));
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}
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void LoopProcess() {
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g_server_manager.LoopProcess();
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}
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}
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}
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namespace hos {
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void InitializeVersionInternal(bool allow_approximate);
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}
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namespace init {
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void InitializeSystemModule() {
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/* Initialize our connection to sm. */
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R_ABORT_UNLESS(sm::Initialize());
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/* Initialize manager interfaces for fs and sm. */
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R_ABORT_UNLESS(fsprInitialize());
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R_ABORT_UNLESS(smManagerInitialize());
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/* Work around a bug with process permissions on < 4.0.0. */
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/* This registers all initial processes explicitly with both fs and sm. */
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pm::RegisterPrivilegedProcesses();
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/* Use our manager extension to tell SM that the FS bug has been worked around. */
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R_ABORT_UNLESS(sm::manager::EndInitialDefers());
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/* Wait for the true hos version to be available. */
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hos::InitializeVersionInternal(false);
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/* Now that the true hos version is available, we should once more end defers (alerting sm to the available hos version). */
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R_ABORT_UNLESS(sm::manager::EndInitialDefers());
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/* Initialize remaining services we need. */
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R_ABORT_UNLESS(ldrPmInitialize());
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spl::Initialize();
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/* Verify that we can sanely execute. */
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ams::CheckApiVersion();
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}
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void FinalizeSystemModule() { /* ... */ }
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void Startup() { /* ... */ }
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}
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void NORETURN Exit(int rc) {
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AMS_UNUSED(rc);
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AMS_ABORT("Exit called by immortal process");
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}
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void Main() {
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/* Set thread name. */
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os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(pm, Main));
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AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(pm, Main));
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/* Initialize process manager implementation. */
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R_ABORT_UNLESS(pm::impl::InitializeProcessManager());
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/* Create Services. */
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pm::RegisterServices();
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/* Loop forever, servicing our services. */
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pm::LoopProcess();
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/* This can never be reached. */
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AMS_ASSUME(false);
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}
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}
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