Update LLDB snapshot to upstream r241361

Notable upstream commits (upstream revision in parens):

- Add a JSON producer to LLDB (228636)
- Don't crash on bad DWARF expression (228729)
- Add support of DWARFv3 DW_OP_form_tls_address (231342)
- Assembly profiler for MIPS64 (232619)
- Handle FreeBSD/arm64 core files (233273)
- Read/Write register for MIPS64 (233685)
- Rework LLDB system initialization (233758)
- SysV ABI for aarch64 (236098)
- MIPS software single stepping (236696)
- FreeBSD/arm live debugging support (237303)
- Assembly profiler for mips32 (237420)
- Parse function name from DWARF DW_AT_abstract_origin (238307)
- Improve LLDB prompt handling (238313)
- Add real time signals support to FreeBSDSignals (238316)
- Fix race in IOHandlerProcessSTDIO (238423)
- MIPS64 Branch instruction emulation for SW single stepping (238820)
- Improve OSType initialization in elf object file's arch_spec (239148)
- Emulation of MIPS64 floating-point branch instructions (239996)
- ABI Plugin for MIPS32 (239997)
- ABI Plugin for MIPS64 (240123)
- MIPS32 branch emulation and single stepping (240373)
- Improve instruction emulation based stack unwinding on ARM (240533)
- Add branch emulation to aarch64 instruction emulator (240769)

1 files changed, 307 insertions, 0 deletions

diff --git a/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h b/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
new file mode 100644
index 0000000..1eda0b0
--- /dev/null
+++ b/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.h
@@ -0,0 +1,307 @@
+//===-- GDBRemoteCommunicationServerLLGS.h ----------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_GDBRemoteCommunicationServerLLGS_h_
+#define liblldb_GDBRemoteCommunicationServerLLGS_h_
+
+// C Includes
+// C++ Includes
+#include <unordered_map>
+
+// Other libraries and framework includes
+#include "lldb/lldb-private-forward.h"
+#include "lldb/Core/Communication.h"
+#include "lldb/Host/Mutex.h"
+#include "lldb/Host/common/NativeProcessProtocol.h"
+
+// Project includes
+#include "GDBRemoteCommunicationServerCommon.h"
+
+class StringExtractorGDBRemote;
+
+namespace lldb_private {
+namespace process_gdb_remote {
+
+class ProcessGDBRemote;
+
+class GDBRemoteCommunicationServerLLGS :
+    public GDBRemoteCommunicationServerCommon,
+    public NativeProcessProtocol::NativeDelegate
+{
+public:
+    //------------------------------------------------------------------
+    // Constructors and Destructors
+    //------------------------------------------------------------------
+    GDBRemoteCommunicationServerLLGS(const lldb::PlatformSP& platform_sp);
+
+    virtual
+    ~GDBRemoteCommunicationServerLLGS();
+
+    //------------------------------------------------------------------
+    /// Specify the program to launch and its arguments.
+    ///
+    /// @param[in] args
+    ///     The command line to launch.
+    ///
+    /// @param[in] argc
+    ///     The number of elements in the args array of cstring pointers.
+    ///
+    /// @return
+    ///     An Error object indicating the success or failure of making
+    ///     the setting.
+    //------------------------------------------------------------------
+    Error
+    SetLaunchArguments (const char *const args[], int argc);
+
+    //------------------------------------------------------------------
+    /// Specify the launch flags for the process.
+    ///
+    /// @param[in] launch_flags
+    ///     The launch flags to use when launching this process.
+    ///
+    /// @return
+    ///     An Error object indicating the success or failure of making
+    ///     the setting.
+    //------------------------------------------------------------------
+    Error
+    SetLaunchFlags (unsigned int launch_flags);
+
+    //------------------------------------------------------------------
+    /// Launch a process with the current launch settings.
+    ///
+    /// This method supports running an lldb-gdbserver or similar
+    /// server in a situation where the startup code has been provided
+    /// with all the information for a child process to be launched.
+    ///
+    /// @return
+    ///     An Error object indicating the success or failure of the
+    ///     launch.
+    //------------------------------------------------------------------
+    Error
+    LaunchProcess () override;
+
+    //------------------------------------------------------------------
+    /// Attach to a process.
+    ///
+    /// This method supports attaching llgs to a process accessible via the
+    /// configured Platform.
+    ///
+    /// @return
+    ///     An Error object indicating the success or failure of the
+    ///     attach operation.
+    //------------------------------------------------------------------
+    Error
+    AttachToProcess (lldb::pid_t pid);
+
+    //------------------------------------------------------------------
+    // NativeProcessProtocol::NativeDelegate overrides
+    //------------------------------------------------------------------
+    void
+    InitializeDelegate (NativeProcessProtocol *process) override;
+
+    void
+    ProcessStateChanged (NativeProcessProtocol *process, lldb::StateType state) override;
+
+    void
+    DidExec (NativeProcessProtocol *process) override;
+
+protected:
+    lldb::PlatformSP m_platform_sp;
+    lldb::thread_t m_async_thread;
+    lldb::tid_t m_current_tid;
+    lldb::tid_t m_continue_tid;
+    Mutex m_debugged_process_mutex;
+    NativeProcessProtocolSP m_debugged_process_sp;
+    Communication m_stdio_communication;
+    lldb::StateType m_inferior_prev_state;
+    lldb::DataBufferSP m_active_auxv_buffer_sp;
+    Mutex m_saved_registers_mutex;
+    std::unordered_map<uint32_t, lldb::DataBufferSP> m_saved_registers_map;
+    uint32_t m_next_saved_registers_id;
+
+    PacketResult
+    SendONotification (const char *buffer, uint32_t len);
+
+    PacketResult
+    SendWResponse (NativeProcessProtocol *process);
+
+    PacketResult
+    SendStopReplyPacketForThread (lldb::tid_t tid);
+
+    PacketResult
+    SendStopReasonForState (lldb::StateType process_state, bool flush_on_exit);
+
+    PacketResult
+    Handle_k (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qProcessInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qC (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_QSetDisableASLR (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_QSetWorkingDir (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qGetWorkingDir (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_C (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_c (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_vCont (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_vCont_actions (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_stop_reason (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qRegisterInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qfThreadInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qsThreadInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_p (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_P (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_H (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_I (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_interrupt (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_m (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_M (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qMemoryRegionInfoSupported (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qMemoryRegionInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_Z (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_z (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_s (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qXfer_auxv_read (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_QSaveRegisterState (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_QRestoreRegisterState (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_vAttach (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_D (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qThreadStopInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qWatchpointSupportInfo (StringExtractorGDBRemote &packet);
+
+    PacketResult
+    Handle_qFileLoadAddress (StringExtractorGDBRemote &packet);
+
+    void
+    SetCurrentThreadID (lldb::tid_t tid);
+
+    lldb::tid_t
+    GetCurrentThreadID () const;
+
+    void
+    SetContinueThreadID (lldb::tid_t tid);
+
+    lldb::tid_t
+    GetContinueThreadID () const { return m_continue_tid; }
+
+    Error
+    SetSTDIOFileDescriptor (int fd);
+
+    static void
+    STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len);
+
+    FileSpec
+    FindModuleFile (const std::string& module_path, const ArchSpec& arch) override;
+
+private:
+    bool
+    DebuggedProcessReaped (lldb::pid_t pid);
+
+    static bool
+    ReapDebuggedProcess (void *callback_baton,
+                         lldb::pid_t pid,
+                         bool exited,
+                         int signal,
+                         int status);
+
+    void
+    HandleInferiorState_Exited (NativeProcessProtocol *process);
+
+    void
+    HandleInferiorState_Stopped (NativeProcessProtocol *process);
+
+    void
+    FlushInferiorOutput ();
+
+    NativeThreadProtocolSP
+    GetThreadFromSuffix (StringExtractorGDBRemote &packet);
+
+    uint32_t
+    GetNextSavedRegistersID ();
+
+    void
+    MaybeCloseInferiorTerminalConnection ();
+
+    void
+    ClearProcessSpecificData ();
+
+    void
+    RegisterPacketHandlers ();
+
+    //------------------------------------------------------------------
+    // For GDBRemoteCommunicationServerLLGS only
+    //------------------------------------------------------------------
+    DISALLOW_COPY_AND_ASSIGN (GDBRemoteCommunicationServerLLGS);
+};
+
+} // namespace process_gdb_remote
+} // namespace lldb_private
+
+#endif  // liblldb_GDBRemoteCommunicationServerLLGS_h_