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69 lines
3.3 KiB
C++
69 lines
3.3 KiB
C++
// SPDX-License-Identifier: MPL-2.0
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// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
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#include "vfs/os_backing.h"
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#include "loader/nro.h"
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#include "loader/nso.h"
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#include "loader/nca.h"
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#include "loader/nsp.h"
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#include "nce.h"
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#include "nce/guest.h"
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#include "os.h"
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namespace skyline::kernel {
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OS::OS(std::shared_ptr<JvmManager> &jvmManager, std::shared_ptr<Logger> &logger, std::shared_ptr<Settings> &settings, const std::string &appFilesPath) : state(this, process, jvmManager, settings, logger), memory(state), serviceManager(state), appFilesPath(appFilesPath) {}
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void OS::Execute(int romFd, loader::RomFormat romType) {
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auto romFile{std::make_shared<vfs::OsBacking>(romFd)};
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auto keyStore{std::make_shared<crypto::KeyStore>(appFilesPath)};
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if (romType == loader::RomFormat::NRO) {
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state.loader = std::make_shared<loader::NroLoader>(romFile);
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} else if (romType == loader::RomFormat::NSO) {
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state.loader = std::make_shared<loader::NsoLoader>(romFile);
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} else if (romType == loader::RomFormat::NCA) {
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state.loader = std::make_shared<loader::NcaLoader>(romFile, keyStore);
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} else if (romType == loader::RomFormat::NSP) {
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state.loader = std::make_shared<loader::NspLoader>(romFile, keyStore);
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} else {
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throw exception("Unsupported ROM extension.");
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}
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process = CreateProcess(constant::BaseAddress, 0, constant::DefStackSize);
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state.loader->LoadProcessData(process, state);
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process->InitializeMemory();
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process->threads.at(process->pid)->Start(); // The kernel itself is responsible for starting the main thread
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state.nce->Execute();
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}
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std::shared_ptr<type::KProcess> OS::CreateProcess(u64 entry, u64 argument, size_t stackSize) {
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auto stack{std::make_shared<type::KSharedMemory>(state, memory.stack.address, stackSize, memory::Permission{true, true, false}, memory::states::Stack, MAP_NORESERVE | MAP_STACK, true)};
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stack->guest = stack->kernel;
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if (mprotect(reinterpret_cast<void *>(stack->guest.address), PAGE_SIZE, PROT_NONE))
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throw exception("Failed to create guard pages");
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auto tlsMem{std::make_shared<type::KSharedMemory>(state, 0, (sizeof(ThreadContext) + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1), memory::Permission{true, true, false}, memory::states::Reserved)};
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tlsMem->guest = tlsMem->kernel;
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auto pid{clone(reinterpret_cast<int (*)(void *)>(&guest::GuestEntry), reinterpret_cast<void *>(stack->guest.address + stackSize), CLONE_FILES | CLONE_FS | CLONE_SETTLS | SIGCHLD, reinterpret_cast<void *>(entry), nullptr, reinterpret_cast<void *>(tlsMem->guest.address))};
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if (pid == -1)
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throw exception("Call to clone() has failed: {}", strerror(errno));
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state.logger->Debug("Successfully created process with PID: {}", pid);
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return std::make_shared<kernel::type::KProcess>(state, pid, argument, stack, tlsMem);
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}
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void OS::KillThread(pid_t pid) {
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if (process->pid == pid) {
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state.logger->Debug("Killing process with PID: {}", pid);
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for (auto &thread: process->threads)
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thread.second->Kill();
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} else {
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state.logger->Debug("Killing thread with TID: {}", pid);
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process->threads.at(pid)->Kill();
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}
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}
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}
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