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author | Liam <byteslice@airmail.cc> | 2024-01-03 01:22:02 +0100 |
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committer | Liam <byteslice@airmail.cc> | 2024-01-30 00:43:45 +0100 |
commit | a7e9d7842dc78e09bfe50ba3bc471b8a75d29b96 (patch) | |
tree | 075bbdbcf1d3afa6404220b14490be77fdacc32c /src/core/hle/service/am/process.cpp | |
parent | service: split am into components (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/service/am/process.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/core/hle/service/am/process.cpp b/src/core/hle/service/am/process.cpp new file mode 100644 index 000000000..16b685f86 --- /dev/null +++ b/src/core/hle/service/am/process.cpp @@ -0,0 +1,138 @@ +// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "common/scope_exit.h" + +#include "core/file_sys/nca_metadata.h" +#include "core/file_sys/registered_cache.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/service/am/process.h" +#include "core/hle/service/filesystem/filesystem.h" +#include "core/loader/loader.h" + +namespace Service::AM { + +Process::Process(Core::System& system) + : m_system(system), m_process(), m_main_thread_priority(), m_main_thread_stack_size(), + m_program_id(), m_process_started() {} + +Process::~Process() { + this->Finalize(); +} + +bool Process::Initialize(u64 program_id) { + // First, ensure we are not holding another process. + this->Finalize(); + + // Get the filesystem controller. + auto& fsc = m_system.GetFileSystemController(); + + // Attempt to load program NCA. + const FileSys::RegisteredCache* bis_system{}; + FileSys::VirtualFile nca{}; + + // Get the program NCA from built-in storage. + bis_system = fsc.GetSystemNANDContents(); + if (bis_system) { + nca = bis_system->GetEntryRaw(program_id, FileSys::ContentRecordType::Program); + } + + // Ensure we retrieved a program NCA. + if (!nca) { + return false; + } + + // Get the appropriate loader to parse this NCA. + auto app_loader = Loader::GetLoader(m_system, nca, program_id, 0); + + // Ensure we have a loader which can parse the NCA. + if (!app_loader) { + return false; + } + + // Create the process. + auto* const process = Kernel::KProcess::Create(m_system.Kernel()); + Kernel::KProcess::Register(m_system.Kernel(), process); + + // On exit, ensure we free the additional reference to the process. + SCOPE_EXIT({ process->Close(); }); + + // Insert process modules into memory. + const auto [load_result, load_parameters] = app_loader->Load(*process, m_system); + + // Ensure loading was successful. + if (load_result != Loader::ResultStatus::Success) { + return false; + } + + // TODO: remove this, kernel already tracks this + m_system.Kernel().AppendNewProcess(process); + + // Note the load parameters from NPDM. + m_main_thread_priority = load_parameters->main_thread_priority; + m_main_thread_stack_size = load_parameters->main_thread_stack_size; + + // This process has not started yet. + m_process_started = false; + + // Take ownership of the process object. + m_process = process; + m_process->Open(); + + // We succeeded. + return true; +} + +void Process::Finalize() { + // Terminate, if we are currently holding a process. + this->Terminate(); + + // Close the process. + if (m_process) { + m_process->Close(); + + // TODO: remove this, kernel already tracks this + m_system.Kernel().RemoveProcess(m_process); + } + + // Clean up. + m_process = nullptr; + m_main_thread_priority = 0; + m_main_thread_stack_size = 0; + m_program_id = 0; + m_process_started = false; +} + +bool Process::Run() { + // If we already started the process, don't start again. + if (m_process_started) { + return false; + } + + // Start. + if (m_process) { + m_process->Run(m_main_thread_priority, m_main_thread_stack_size); + } + + // Mark as started. + m_process_started = true; + + // We succeeded. + return true; +} + +void Process::Terminate() { + if (m_process) { + m_process->Terminate(); + } +} + +u64 Process::GetProcessId() const { + if (m_process) { + return m_process->GetProcessId(); + } + + return 0; +} + +} // namespace Service::AM |