Add lldb-gdbserver support for Linux x86_64.
This change brings in lldb-gdbserver (llgs) specifically for Linux x86_64.
(More architectures coming soon).
Not every debugserver option is covered yet. Currently
the lldb-gdbserver command line can start unattached,
start attached to a pid (process-name attach not supported yet),
or accept lldb attaching and launching a process or connecting
by process id.
The history of this large change can be found here:
https://github.com/tfiala/lldb/tree/dev-tfiala-native-protocol-linux-x86_64
Until mid/late April, I was not sharing the work and continued
to rebase it off of head (developed via id tfiala@google.com). I switched over to
user todd.fiala@gmail.com in the middle, and once I went to github, I did
merges rather than rebasing so I could share with others.
llvm-svn: 212069
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
index 4bc0857..d20cc2a 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServer.h
@@ -14,16 +14,23 @@
// C++ Includes
#include <vector>
#include <set>
+#include <unordered_map>
// Other libraries and framework includes
// Project includes
+#include "lldb/lldb-private-forward.h"
+#include "lldb/Core/Communication.h"
#include "lldb/Host/Mutex.h"
#include "lldb/Target/Process.h"
#include "GDBRemoteCommunication.h"
+#include "../../../Host/common/NativeProcessProtocol.h"
+
class ProcessGDBRemote;
class StringExtractorGDBRemote;
-class GDBRemoteCommunicationServer : public GDBRemoteCommunication
+class GDBRemoteCommunicationServer :
+ public GDBRemoteCommunication,
+ public lldb_private::NativeProcessProtocol::NativeDelegate
{
public:
typedef std::map<uint16_t, lldb::pid_t> PortMap;
@@ -38,12 +45,13 @@
GDBRemoteCommunicationServer(bool is_platform);
GDBRemoteCommunicationServer(bool is_platform,
- const lldb::PlatformSP& platform_sp);
+ const lldb::PlatformSP& platform_sp,
+ lldb::DebuggerSP& debugger_sp);
virtual
~GDBRemoteCommunicationServer();
- bool
+ PacketResult
GetPacketAndSendResponse (uint32_t timeout_usec,
lldb_private::Error &error,
bool &interrupt,
@@ -188,6 +196,28 @@
lldb_private::Error
LaunchProcess ();
+ //------------------------------------------------------------------
+ /// 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.
+ //------------------------------------------------------------------
+ lldb_private::Error
+ AttachToProcess (lldb::pid_t pid);
+
+ //------------------------------------------------------------------
+ // NativeProcessProtocol::NativeDelegate overrides
+ //------------------------------------------------------------------
+ void
+ InitializeDelegate (lldb_private::NativeProcessProtocol *process) override;
+
+ void
+ ProcessStateChanged (lldb_private::NativeProcessProtocol *process, lldb::StateType state) override;
+
protected:
lldb::PlatformSP m_platform_sp;
lldb::thread_t m_async_thread;
@@ -199,7 +229,20 @@
uint32_t m_proc_infos_index;
PortMap m_port_map;
uint16_t m_port_offset;
-
+ lldb::tid_t m_current_tid;
+ lldb::tid_t m_continue_tid;
+ lldb_private::Mutex m_debugged_process_mutex;
+ lldb_private::NativeProcessProtocolSP m_debugged_process_sp;
+ lldb::DebuggerSP m_debugger_sp;
+ Communication m_stdio_communication;
+ bool m_exit_now; // use in asynchronous handling to indicate process should exit.
+ lldb::StateType m_inferior_prev_state;
+ bool m_thread_suffix_supported;
+ bool m_list_threads_in_stop_reply;
+ lldb::DataBufferSP m_active_auxv_buffer_sp;
+ lldb_private::Mutex m_saved_registers_mutex;
+ std::unordered_map<uint32_t, lldb::DataBufferSP> m_saved_registers_map;
+ uint32_t m_next_saved_registers_id;
PacketResult
SendUnimplementedResponse (const char *packet);
@@ -208,9 +251,24 @@
SendErrorResponse (uint8_t error);
PacketResult
+ SendIllFormedResponse (const StringExtractorGDBRemote &packet, const char *error_message);
+
+ PacketResult
SendOKResponse ();
PacketResult
+ SendONotification (const char *buffer, uint32_t len);
+
+ PacketResult
+ SendWResponse (lldb_private::NativeProcessProtocol *process);
+
+ PacketResult
+ SendStopReplyPacketForThread (lldb::tid_t tid);
+
+ PacketResult
+ SendStopReasonForState (lldb::StateType process_state, bool flush_on_exit);
+
+ PacketResult
Handle_A (StringExtractorGDBRemote &packet);
PacketResult
@@ -233,7 +291,10 @@
PacketResult
Handle_qPlatform_chmod (StringExtractorGDBRemote &packet);
-
+
+ PacketResult
+ Handle_qProcessInfo (StringExtractorGDBRemote &packet);
+
PacketResult
Handle_qProcessInfoPID (StringExtractorGDBRemote &packet);
@@ -284,7 +345,22 @@
PacketResult
Handle_QSetSTDERR (StringExtractorGDBRemote &packet);
-
+
+ PacketResult
+ Handle_C (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_c (StringExtractorGDBRemote &packet, bool skip_file_pos_adjustment = false);
+
+ PacketResult
+ Handle_vCont (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_vCont_actions (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_stop_reason (StringExtractorGDBRemote &packet);
+
PacketResult
Handle_vFile_Open (StringExtractorGDBRemote &packet);
@@ -321,6 +397,84 @@
PacketResult
Handle_qPlatform_shell (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_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_qSupported (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_QThreadSuffixSupported (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_QListThreadsInStopReply (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_qXfer_auxv_read (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_QSaveRegisterState (StringExtractorGDBRemote &packet);
+
+ PacketResult
+ Handle_QRestoreRegisterState (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; }
+
+ lldb_private::Error
+ SetSTDIOFileDescriptor (int fd);
+
+ static void
+ STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len);
+
private:
bool
DebugserverProcessReaped (lldb::pid_t pid);
@@ -345,6 +499,38 @@
bool
KillSpawnedProcess (lldb::pid_t pid);
+ bool
+ IsGdbServer ()
+ {
+ return !m_is_platform;
+ }
+
+ /// Launch a process from lldb-gdbserver
+ lldb_private::Error
+ LaunchDebugServerProcess ();
+
+ /// Launch a process from lldb-platform
+ lldb_private::Error
+ LaunchPlatformProcess ();
+
+ void
+ HandleInferiorState_Exited (lldb_private::NativeProcessProtocol *process);
+
+ void
+ HandleInferiorState_Stopped (lldb_private::NativeProcessProtocol *process);
+
+ void
+ FlushInferiorOutput ();
+
+ lldb_private::NativeThreadProtocolSP
+ GetThreadFromSuffix (StringExtractorGDBRemote &packet);
+
+ uint32_t
+ GetNextSavedRegistersID ();
+
+ void
+ MaybeCloseInferiorTerminalConnection ();
+
//------------------------------------------------------------------
// For GDBRemoteCommunicationServer only
//------------------------------------------------------------------