mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-12-22 16:30:57 +01:00
Merge pull request #9225 from liamwhite/debugger-instance
Debugger improvements
This commit is contained in:
liamwhite
GitHub
commit
040a01a5dd
4 changed files with 254 additions and 74 deletions
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@ -27,12 +27,21 @@ static void AsyncReceiveInto(Readable& r, Buffer& buffer, Callback&& c) {
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const u8* buffer_start = reinterpret_cast<const u8*>(&buffer);
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std::span<const u8> received_data{buffer_start, buffer_start + bytes_read};
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c(received_data);
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AsyncReceiveInto(r, buffer, c);
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}
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AsyncReceiveInto(r, buffer, c);
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});
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}
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template <typename Callback>
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static void AsyncAccept(boost::asio::ip::tcp::acceptor& acceptor, Callback&& c) {
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acceptor.async_accept([&, c](const boost::system::error_code& error, auto&& peer_socket) {
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if (!error.failed()) {
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c(peer_socket);
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AsyncAccept(acceptor, c);
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}
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});
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}
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template <typename Readable, typename Buffer>
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static std::span<const u8> ReceiveInto(Readable& r, Buffer& buffer) {
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static_assert(std::is_trivial_v<Buffer>);
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@ -59,9 +68,7 @@ namespace Core {
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class DebuggerImpl : public DebuggerBackend {
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public:
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explicit DebuggerImpl(Core::System& system_, u16 port)
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: system{system_}, signal_pipe{io_context}, client_socket{io_context} {
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frontend = std::make_unique<GDBStub>(*this, system);
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explicit DebuggerImpl(Core::System& system_, u16 port) : system{system_} {
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InitializeServer(port);
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}
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@ -70,39 +77,42 @@ public:
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}
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bool SignalDebugger(SignalInfo signal_info) {
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{
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std::scoped_lock lk{connection_lock};
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std::scoped_lock lk{connection_lock};
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if (stopped) {
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// Do not notify the debugger about another event.
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// It should be ignored.
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return false;
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}
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// Set up the state.
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stopped = true;
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info = signal_info;
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if (stopped || !state) {
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// Do not notify the debugger about another event.
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// It should be ignored.
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return false;
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}
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// Set up the state.
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stopped = true;
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state->info = signal_info;
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// Write a single byte into the pipe to wake up the debug interface.
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boost::asio::write(signal_pipe, boost::asio::buffer(&stopped, sizeof(stopped)));
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boost::asio::write(state->signal_pipe, boost::asio::buffer(&stopped, sizeof(stopped)));
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return true;
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}
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// These functions are callbacks from the frontend, and the lock will be held.
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// There is no need to relock it.
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std::span<const u8> ReadFromClient() override {
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return ReceiveInto(client_socket, client_data);
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return ReceiveInto(state->client_socket, state->client_data);
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}
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void WriteToClient(std::span<const u8> data) override {
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boost::asio::write(client_socket, boost::asio::buffer(data.data(), data.size_bytes()));
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boost::asio::write(state->client_socket,
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boost::asio::buffer(data.data(), data.size_bytes()));
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}
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void SetActiveThread(Kernel::KThread* thread) override {
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active_thread = thread;
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state->active_thread = thread;
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}
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Kernel::KThread* GetActiveThread() override {
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return active_thread;
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return state->active_thread;
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}
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private:
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@ -113,65 +123,78 @@ private:
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// Run the connection thread.
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connection_thread = std::jthread([&, port](std::stop_token stop_token) {
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Common::SetCurrentThreadName("Debugger");
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try {
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// Initialize the listening socket and accept a new client.
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tcp::endpoint endpoint{boost::asio::ip::address_v4::any(), port};
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tcp::acceptor acceptor{io_context, endpoint};
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acceptor.async_accept(client_socket, [](const auto&) {});
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io_context.run_one();
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io_context.restart();
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AsyncAccept(acceptor, [&](auto&& peer) { AcceptConnection(std::move(peer)); });
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if (stop_token.stop_requested()) {
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return;
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while (!stop_token.stop_requested() && io_context.run()) {
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}
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ThreadLoop(stop_token);
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} catch (const std::exception& ex) {
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LOG_CRITICAL(Debug_GDBStub, "Stopping server: {}", ex.what());
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}
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});
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}
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void AcceptConnection(boost::asio::ip::tcp::socket&& peer) {
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LOG_INFO(Debug_GDBStub, "Accepting new peer connection");
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std::scoped_lock lk{connection_lock};
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// Ensure everything is stopped.
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PauseEmulation();
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// Set up the new frontend.
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frontend = std::make_unique<GDBStub>(*this, system);
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// Set the new state. This will tear down any existing state.
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state = ConnectionState{
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.client_socket{std::move(peer)},
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.signal_pipe{io_context},
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.info{},
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.active_thread{},
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.client_data{},
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.pipe_data{},
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};
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// Set up the client signals for new data.
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AsyncReceiveInto(state->signal_pipe, state->pipe_data, [&](auto d) { PipeData(d); });
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AsyncReceiveInto(state->client_socket, state->client_data, [&](auto d) { ClientData(d); });
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// Set the active thread.
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UpdateActiveThread();
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// Set up the frontend.
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frontend->Connected();
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}
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void ShutdownServer() {
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connection_thread.request_stop();
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io_context.stop();
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connection_thread.join();
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}
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void ThreadLoop(std::stop_token stop_token) {
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Common::SetCurrentThreadName("Debugger");
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// Set up the client signals for new data.
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AsyncReceiveInto(signal_pipe, pipe_data, [&](auto d) { PipeData(d); });
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AsyncReceiveInto(client_socket, client_data, [&](auto d) { ClientData(d); });
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// Set the active thread.
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UpdateActiveThread();
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// Set up the frontend.
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frontend->Connected();
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// Main event loop.
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while (!stop_token.stop_requested() && io_context.run()) {
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}
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}
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void PipeData(std::span<const u8> data) {
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switch (info.type) {
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std::scoped_lock lk{connection_lock};
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switch (state->info.type) {
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case SignalType::Stopped:
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case SignalType::Watchpoint:
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// Stop emulation.
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PauseEmulation();
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// Notify the client.
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active_thread = info.thread;
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state->active_thread = state->info.thread;
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UpdateActiveThread();
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if (info.type == SignalType::Watchpoint) {
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frontend->Watchpoint(active_thread, *info.watchpoint);
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if (state->info.type == SignalType::Watchpoint) {
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frontend->Watchpoint(state->active_thread, *state->info.watchpoint);
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} else {
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frontend->Stopped(active_thread);
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frontend->Stopped(state->active_thread);
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}
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break;
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@ -179,8 +202,8 @@ private:
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frontend->ShuttingDown();
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// Wait for emulation to shut down gracefully now.
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signal_pipe.close();
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client_socket.shutdown(boost::asio::socket_base::shutdown_both);
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state->signal_pipe.close();
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state->client_socket.shutdown(boost::asio::socket_base::shutdown_both);
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LOG_INFO(Debug_GDBStub, "Shut down server");
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break;
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@ -188,17 +211,16 @@ private:
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}
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void ClientData(std::span<const u8> data) {
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std::scoped_lock lk{connection_lock};
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const auto actions{frontend->ClientData(data)};
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for (const auto action : actions) {
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switch (action) {
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case DebuggerAction::Interrupt: {
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{
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std::scoped_lock lk{connection_lock};
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stopped = true;
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}
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stopped = true;
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PauseEmulation();
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UpdateActiveThread();
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frontend->Stopped(active_thread);
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frontend->Stopped(state->active_thread);
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break;
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}
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case DebuggerAction::Continue:
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@ -206,15 +228,15 @@ private:
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break;
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case DebuggerAction::StepThreadUnlocked:
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MarkResumed([&] {
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active_thread->SetStepState(Kernel::StepState::StepPending);
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active_thread->Resume(Kernel::SuspendType::Debug);
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ResumeEmulation(active_thread);
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state->active_thread->SetStepState(Kernel::StepState::StepPending);
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state->active_thread->Resume(Kernel::SuspendType::Debug);
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ResumeEmulation(state->active_thread);
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});
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break;
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case DebuggerAction::StepThreadLocked: {
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MarkResumed([&] {
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active_thread->SetStepState(Kernel::StepState::StepPending);
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active_thread->Resume(Kernel::SuspendType::Debug);
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state->active_thread->SetStepState(Kernel::StepState::StepPending);
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state->active_thread->Resume(Kernel::SuspendType::Debug);
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});
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break;
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}
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@ -254,15 +276,14 @@ private:
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template <typename Callback>
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void MarkResumed(Callback&& cb) {
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Kernel::KScopedSchedulerLock sl{system.Kernel()};
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std::scoped_lock cl{connection_lock};
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stopped = false;
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cb();
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}
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void UpdateActiveThread() {
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const auto& threads{ThreadList()};
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if (std::find(threads.begin(), threads.end(), active_thread) == threads.end()) {
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active_thread = threads[0];
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if (std::find(threads.begin(), threads.end(), state->active_thread) == threads.end()) {
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state->active_thread = threads[0];
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}
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}
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@ -274,18 +295,22 @@ private:
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System& system;
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std::unique_ptr<DebuggerFrontend> frontend;
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boost::asio::io_context io_context;
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std::jthread connection_thread;
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std::mutex connection_lock;
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boost::asio::io_context io_context;
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boost::process::async_pipe signal_pipe;
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boost::asio::ip::tcp::socket client_socket;
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SignalInfo info;
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Kernel::KThread* active_thread;
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bool pipe_data;
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bool stopped;
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struct ConnectionState {
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boost::asio::ip::tcp::socket client_socket;
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boost::process::async_pipe signal_pipe;
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std::array<u8, 4096> client_data;
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SignalInfo info;
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Kernel::KThread* active_thread;
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std::array<u8, 4096> client_data;
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bool pipe_data;
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};
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std::optional<ConnectionState> state{};
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bool stopped{};
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};
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Debugger::Debugger(Core::System& system, u16 port) {
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@ -606,6 +606,8 @@ void GDBStub::HandleQuery(std::string_view command) {
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} else if (command.starts_with("StartNoAckMode")) {
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no_ack = true;
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SendReply(GDB_STUB_REPLY_OK);
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} else if (command.starts_with("Rcmd,")) {
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HandleRcmd(Common::HexStringToVector(command.substr(5), false));
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} else {
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SendReply(GDB_STUB_REPLY_EMPTY);
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}
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@ -645,6 +647,155 @@ void GDBStub::HandleVCont(std::string_view command, std::vector<DebuggerAction>&
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}
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}
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constexpr std::array<std::pair<const char*, Kernel::Svc::MemoryState>, 22> MemoryStateNames{{
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{"----- Free -----", Kernel::Svc::MemoryState::Free},
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{"Io ", Kernel::Svc::MemoryState::Io},
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{"Static ", Kernel::Svc::MemoryState::Static},
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{"Code ", Kernel::Svc::MemoryState::Code},
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{"CodeData ", Kernel::Svc::MemoryState::CodeData},
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{"Normal ", Kernel::Svc::MemoryState::Normal},
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{"Shared ", Kernel::Svc::MemoryState::Shared},
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{"AliasCode ", Kernel::Svc::MemoryState::AliasCode},
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{"AliasCodeData ", Kernel::Svc::MemoryState::AliasCodeData},
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{"Ipc ", Kernel::Svc::MemoryState::Ipc},
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{"Stack ", Kernel::Svc::MemoryState::Stack},
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{"ThreadLocal ", Kernel::Svc::MemoryState::ThreadLocal},
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{"Transfered ", Kernel::Svc::MemoryState::Transfered},
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{"SharedTransfered", Kernel::Svc::MemoryState::SharedTransfered},
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{"SharedCode ", Kernel::Svc::MemoryState::SharedCode},
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{"Inaccessible ", Kernel::Svc::MemoryState::Inaccessible},
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{"NonSecureIpc ", Kernel::Svc::MemoryState::NonSecureIpc},
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{"NonDeviceIpc ", Kernel::Svc::MemoryState::NonDeviceIpc},
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{"Kernel ", Kernel::Svc::MemoryState::Kernel},
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{"GeneratedCode ", Kernel::Svc::MemoryState::GeneratedCode},
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{"CodeOut ", Kernel::Svc::MemoryState::CodeOut},
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{"Coverage ", Kernel::Svc::MemoryState::Coverage},
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}};
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static constexpr const char* GetMemoryStateName(Kernel::Svc::MemoryState state) {
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for (size_t i = 0; i < MemoryStateNames.size(); i++) {
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if (std::get<1>(MemoryStateNames[i]) == state) {
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return std::get<0>(MemoryStateNames[i]);
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}
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}
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return "Unknown ";
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}
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static constexpr const char* GetMemoryPermissionString(const Kernel::Svc::MemoryInfo& info) {
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if (info.state == Kernel::Svc::MemoryState::Free) {
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return " ";
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}
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switch (info.permission) {
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case Kernel::Svc::MemoryPermission::ReadExecute:
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return "r-x";
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case Kernel::Svc::MemoryPermission::Read:
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return "r--";
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case Kernel::Svc::MemoryPermission::ReadWrite:
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return "rw-";
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default:
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return "---";
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}
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}
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static VAddr GetModuleEnd(Kernel::KPageTable& page_table, VAddr base) {
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Kernel::Svc::MemoryInfo mem_info;
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VAddr cur_addr{base};
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// Expect: r-x Code (.text)
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mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
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cur_addr = mem_info.base_address + mem_info.size;
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if (mem_info.state != Kernel::Svc::MemoryState::Code ||
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mem_info.permission != Kernel::Svc::MemoryPermission::ReadExecute) {
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return cur_addr - 1;
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}
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// Expect: r-- Code (.rodata)
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mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
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cur_addr = mem_info.base_address + mem_info.size;
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if (mem_info.state != Kernel::Svc::MemoryState::Code ||
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mem_info.permission != Kernel::Svc::MemoryPermission::Read) {
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return cur_addr - 1;
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}
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// Expect: rw- CodeData (.data)
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mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
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cur_addr = mem_info.base_address + mem_info.size;
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return cur_addr - 1;
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}
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void GDBStub::HandleRcmd(const std::vector<u8>& command) {
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std::string_view command_str{reinterpret_cast<const char*>(&command[0]), command.size()};
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std::string reply;
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auto* process = system.CurrentProcess();
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auto& page_table = process->PageTable();
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if (command_str == "get info") {
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Loader::AppLoader::Modules modules;
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system.GetAppLoader().ReadNSOModules(modules);
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reply = fmt::format("Process: {:#x} ({})\n"
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"Program Id: {:#018x}\n",
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process->GetProcessID(), process->GetName(), process->GetProgramID());
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reply +=
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fmt::format("Layout:\n"
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" Alias: {:#012x} - {:#012x}\n"
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" Heap: {:#012x} - {:#012x}\n"
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" Aslr: {:#012x} - {:#012x}\n"
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" Stack: {:#012x} - {:#012x}\n"
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"Modules:\n",
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page_table.GetAliasRegionStart(), page_table.GetAliasRegionEnd(),
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page_table.GetHeapRegionStart(), page_table.GetHeapRegionEnd(),
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page_table.GetAliasCodeRegionStart(), page_table.GetAliasCodeRegionEnd(),
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page_table.GetStackRegionStart(), page_table.GetStackRegionEnd());
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for (const auto& [vaddr, name] : modules) {
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reply += fmt::format(" {:#012x} - {:#012x} {}\n", vaddr,
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GetModuleEnd(page_table, vaddr), name);
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}
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} else if (command_str == "get mappings") {
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reply = "Mappings:\n";
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VAddr cur_addr = 0;
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while (true) {
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using MemoryAttribute = Kernel::Svc::MemoryAttribute;
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auto mem_info = page_table.QueryInfo(cur_addr).GetSvcMemoryInfo();
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if (mem_info.state != Kernel::Svc::MemoryState::Inaccessible ||
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mem_info.base_address + mem_info.size - 1 != std::numeric_limits<u64>::max()) {
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const char* state = GetMemoryStateName(mem_info.state);
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const char* perm = GetMemoryPermissionString(mem_info);
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const char l = True(mem_info.attribute & MemoryAttribute::Locked) ? 'L' : '-';
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const char i = True(mem_info.attribute & MemoryAttribute::IpcLocked) ? 'I' : '-';
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const char d = True(mem_info.attribute & MemoryAttribute::DeviceShared) ? 'D' : '-';
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const char u = True(mem_info.attribute & MemoryAttribute::Uncached) ? 'U' : '-';
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reply +=
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fmt::format(" {:#012x} - {:#012x} {} {} {}{}{}{} [{}, {}]\n",
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mem_info.base_address, mem_info.base_address + mem_info.size - 1,
|
||||
perm, state, l, i, d, u, mem_info.ipc_count, mem_info.device_count);
|
||||
}
|
||||
|
||||
const uintptr_t next_address = mem_info.base_address + mem_info.size;
|
||||
if (next_address <= cur_addr) {
|
||||
break;
|
||||
}
|
||||
|
||||
cur_addr = next_address;
|
||||
}
|
||||
} else if (command_str == "help") {
|
||||
reply = "Commands:\n get info\n get mappings\n";
|
||||
} else {
|
||||
reply = "Unknown command.\nCommands:\n get info\n get mappings\n";
|
||||
}
|
||||
|
||||
std::span<const u8> reply_span{reinterpret_cast<u8*>(&reply.front()), reply.size()};
|
||||
SendReply(Common::HexToString(reply_span, false));
|
||||
}
|
||||
|
||||
Kernel::KThread* GDBStub::GetThreadByID(u64 thread_id) {
|
||||
const auto& threads{system.GlobalSchedulerContext().GetThreadList()};
|
||||
for (auto* thread : threads) {
|
||||
|
|
|
|||
|
|
@ -32,6 +32,7 @@ private:
|
|||
void ExecuteCommand(std::string_view packet, std::vector<DebuggerAction>& actions);
|
||||
void HandleVCont(std::string_view command, std::vector<DebuggerAction>& actions);
|
||||
void HandleQuery(std::string_view command);
|
||||
void HandleRcmd(const std::vector<u8>& command);
|
||||
void HandleBreakpointInsert(std::string_view command);
|
||||
void HandleBreakpointRemove(std::string_view command);
|
||||
std::vector<char>::const_iterator CommandEnd() const;
|
||||
|
|
|
|||
|
|
@ -320,6 +320,9 @@ public:
|
|||
constexpr VAddr GetAliasCodeRegionStart() const {
|
||||
return m_alias_code_region_start;
|
||||
}
|
||||
constexpr VAddr GetAliasCodeRegionEnd() const {
|
||||
return m_alias_code_region_end;
|
||||
}
|
||||
constexpr VAddr GetAliasCodeRegionSize() const {
|
||||
return m_alias_code_region_end - m_alias_code_region_start;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue