Separate monolithic GDBRemoteCommunicationServer class into 4 part
GDBRemoteCommunicationServer: Basic packet handling, handler registration
LLDBCommonPacketHandler: Common packet handling for lldb-platform and lldb-gdbserver
LLDBPlatformPacketHandler: lldb-platform specific packet handling
LLGSPacketHandler: lldb-gdbserver specific packet handling
Differential Revision: http://reviews.llvm.org/D7538
llvm-svn: 228823
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
new file mode 100644
index 0000000..865b3b0
--- /dev/null
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
@@ -0,0 +1,2742 @@
+//===-- GDBRemoteCommunicationServerLLGS.cpp --------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <errno.h>
+
+#include "lldb/Host/Config.h"
+
+#include "GDBRemoteCommunicationServerLLGS.h"
+#include "lldb/Core/StreamGDBRemote.h"
+
+// C Includes
+// C++ Includes
+#include <cstring>
+#include <chrono>
+#include <thread>
+
+// Other libraries and framework includes
+#include "llvm/ADT/Triple.h"
+#include "lldb/Interpreter/Args.h"
+#include "lldb/Core/Debugger.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Core/State.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Host/ConnectionFileDescriptor.h"
+#include "lldb/Host/Debug.h"
+#include "lldb/Host/Endian.h"
+#include "lldb/Host/File.h"
+#include "lldb/Host/FileSystem.h"
+#include "lldb/Host/Host.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/StringConvert.h"
+#include "lldb/Host/TimeValue.h"
+#include "lldb/Target/FileAction.h"
+#include "lldb/Target/Platform.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Host/common/NativeRegisterContext.h"
+#include "lldb/Host/common/NativeProcessProtocol.h"
+#include "lldb/Host/common/NativeThreadProtocol.h"
+
+// Project includes
+#include "Utility/StringExtractorGDBRemote.h"
+#include "Utility/UriParser.h"
+#include "ProcessGDBRemote.h"
+#include "ProcessGDBRemoteLog.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// GDBRemote Errors
+//----------------------------------------------------------------------
+
+namespace
+{
+ enum GDBRemoteServerError
+ {
+ // Set to the first unused error number in literal form below
+ eErrorFirst = 29,
+ eErrorNoProcess = eErrorFirst,
+ eErrorResume,
+ eErrorExitStatus
+ };
+}
+
+//----------------------------------------------------------------------
+// GDBRemoteCommunicationServerLLGS constructor
+//----------------------------------------------------------------------
+GDBRemoteCommunicationServerLLGS::GDBRemoteCommunicationServerLLGS(
+ const lldb::PlatformSP& platform_sp,
+ lldb::DebuggerSP &debugger_sp) :
+ GDBRemoteCommunicationServerCommon ("gdb-remote.server", "gdb-remote.server.rx_packet"),
+ m_platform_sp (platform_sp),
+ m_async_thread (LLDB_INVALID_HOST_THREAD),
+ m_current_tid (LLDB_INVALID_THREAD_ID),
+ m_continue_tid (LLDB_INVALID_THREAD_ID),
+ m_debugged_process_mutex (Mutex::eMutexTypeRecursive),
+ m_debugged_process_sp (),
+ m_debugger_sp (debugger_sp),
+ m_stdio_communication ("process.stdio"),
+ m_inferior_prev_state (StateType::eStateInvalid),
+ m_active_auxv_buffer_sp (),
+ m_saved_registers_mutex (),
+ m_saved_registers_map (),
+ m_next_saved_registers_id (1)
+{
+ assert(platform_sp);
+ assert(debugger_sp && "must specify non-NULL debugger_sp for lldb-gdbserver");
+ RegisterPacketHandlers();
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+GDBRemoteCommunicationServerLLGS::~GDBRemoteCommunicationServerLLGS()
+{
+}
+
+void
+GDBRemoteCommunicationServerLLGS::RegisterPacketHandlers()
+{
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
+ &GDBRemoteCommunicationServerLLGS::Handle_A);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_C,
+ &GDBRemoteCommunicationServerLLGS::Handle_C);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_c,
+ &GDBRemoteCommunicationServerLLGS::Handle_c);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_D,
+ &GDBRemoteCommunicationServerLLGS::Handle_D);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_H,
+ &GDBRemoteCommunicationServerLLGS::Handle_H);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_I,
+ &GDBRemoteCommunicationServerLLGS::Handle_I);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_interrupt,
+ &GDBRemoteCommunicationServerLLGS::Handle_interrupt);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_m,
+ &GDBRemoteCommunicationServerLLGS::Handle_m);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_M,
+ &GDBRemoteCommunicationServerLLGS::Handle_M);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_p,
+ &GDBRemoteCommunicationServerLLGS::Handle_p);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_P,
+ &GDBRemoteCommunicationServerLLGS::Handle_P);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qC,
+ &GDBRemoteCommunicationServerLLGS::Handle_qC);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qfThreadInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qfThreadInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qGetWorkingDir,
+ &GDBRemoteCommunicationServerLLGS::Handle_qGetWorkingDir);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qMemoryRegionInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qMemoryRegionInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qMemoryRegionInfoSupported,
+ &GDBRemoteCommunicationServerLLGS::Handle_qMemoryRegionInfoSupported);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qProcessInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qProcessInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qRegisterInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qRegisterInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QRestoreRegisterState,
+ &GDBRemoteCommunicationServerLLGS::Handle_QRestoreRegisterState);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSaveRegisterState,
+ &GDBRemoteCommunicationServerLLGS::Handle_QSaveRegisterState);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR,
+ &GDBRemoteCommunicationServerLLGS::Handle_QSetDisableASLR);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir,
+ &GDBRemoteCommunicationServerLLGS::Handle_QSetWorkingDir);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qsThreadInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qsThreadInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qThreadStopInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qThreadStopInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qWatchpointSupportInfo,
+ &GDBRemoteCommunicationServerLLGS::Handle_qWatchpointSupportInfo);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_qXfer_auxv_read,
+ &GDBRemoteCommunicationServerLLGS::Handle_qXfer_auxv_read);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_s,
+ &GDBRemoteCommunicationServerLLGS::Handle_s);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_stop_reason,
+ &GDBRemoteCommunicationServerLLGS::Handle_stop_reason); // ?
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vAttach,
+ &GDBRemoteCommunicationServerLLGS::Handle_vAttach);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vCont,
+ &GDBRemoteCommunicationServerLLGS::Handle_vCont);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_vCont_actions,
+ &GDBRemoteCommunicationServerLLGS::Handle_vCont_actions);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_Z,
+ &GDBRemoteCommunicationServerLLGS::Handle_Z);
+ RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_z,
+ &GDBRemoteCommunicationServerLLGS::Handle_z);
+
+ RegisterPacketHandler(StringExtractorGDBRemote::eServerPacketType_k,
+ [this](StringExtractorGDBRemote packet,
+ Error &error,
+ bool &interrupt,
+ bool &quit)
+ {
+ quit = true;
+ return this->Handle_k (packet);
+ });
+}
+
+lldb_private::Error
+GDBRemoteCommunicationServerLLGS::SetLaunchArguments (const char *const args[], int argc)
+{
+ if ((argc < 1) || !args || !args[0] || !args[0][0])
+ return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__);
+
+ m_process_launch_info.SetArguments (const_cast<const char**> (args), true);
+ return lldb_private::Error ();
+}
+
+lldb_private::Error
+GDBRemoteCommunicationServerLLGS::SetLaunchFlags (unsigned int launch_flags)
+{
+ m_process_launch_info.GetFlags ().Set (launch_flags);
+ return lldb_private::Error ();
+}
+
+lldb_private::Error
+GDBRemoteCommunicationServerLLGS::LaunchProcess ()
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ if (!m_process_launch_info.GetArguments ().GetArgumentCount ())
+ return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__);
+
+ lldb_private::Error error;
+ {
+ Mutex::Locker locker (m_debugged_process_mutex);
+ assert (!m_debugged_process_sp && "lldb-gdbserver creating debugged process but one already exists");
+ error = m_platform_sp->LaunchNativeProcess (
+ m_process_launch_info,
+ *this,
+ m_debugged_process_sp);
+ }
+
+ if (!error.Success ())
+ {
+ fprintf (stderr, "%s: failed to launch executable %s", __FUNCTION__, m_process_launch_info.GetArguments ().GetArgumentAtIndex (0));
+ return error;
+ }
+
+ // Handle mirroring of inferior stdout/stderr over the gdb-remote protocol as needed.
+ // llgs local-process debugging may specify PTYs, which will eliminate the need to reflect inferior
+ // stdout/stderr over the gdb-remote protocol.
+ if (ShouldRedirectInferiorOutputOverGdbRemote (m_process_launch_info))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " setting up stdout/stderr redirection via $O gdb-remote commands", __FUNCTION__, m_debugged_process_sp->GetID ());
+
+ // Setup stdout/stderr mapping from inferior to $O
+ auto terminal_fd = m_debugged_process_sp->GetTerminalFileDescriptor ();
+ if (terminal_fd >= 0)
+ {
+ if (log)
+ log->Printf ("ProcessGDBRemoteCommunicationServerLLGS::%s setting inferior STDIO fd to %d", __FUNCTION__, terminal_fd);
+ error = SetSTDIOFileDescriptor (terminal_fd);
+ if (error.Fail ())
+ return error;
+ }
+ else
+ {
+ if (log)
+ log->Printf ("ProcessGDBRemoteCommunicationServerLLGS::%s ignoring inferior STDIO since terminal fd reported as %d", __FUNCTION__, terminal_fd);
+ }
+ }
+ else
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " skipping stdout/stderr redirection via $O: inferior will communicate over client-provided file descriptors", __FUNCTION__, m_debugged_process_sp->GetID ());
+ }
+
+ printf ("Launched '%s' as process %" PRIu64 "...\n", m_process_launch_info.GetArguments ().GetArgumentAtIndex (0), m_process_launch_info.GetProcessID ());
+
+ // Add to list of spawned processes.
+ lldb::pid_t pid;
+ if ((pid = m_process_launch_info.GetProcessID ()) != LLDB_INVALID_PROCESS_ID)
+ {
+ // add to spawned pids
+ Mutex::Locker locker (m_spawned_pids_mutex);
+ // On an lldb-gdbserver, we would expect there to be only one.
+ assert (m_spawned_pids.empty () && "lldb-gdbserver adding tracked process but one already existed");
+ m_spawned_pids.insert (pid);
+ }
+
+ return error;
+}
+
+bool
+GDBRemoteCommunicationServerLLGS::ShouldRedirectInferiorOutputOverGdbRemote (const lldb_private::ProcessLaunchInfo &launch_info) const
+{
+ // Retrieve the file actions specified for stdout and stderr.
+ auto stdout_file_action = launch_info.GetFileActionForFD (STDOUT_FILENO);
+ auto stderr_file_action = launch_info.GetFileActionForFD (STDERR_FILENO);
+
+ // If neither stdout and stderr file actions are specified, we're not doing anything special, so
+ // assume we want to redirect stdout/stderr over gdb-remote $O messages.
+ if ((stdout_file_action == nullptr) && (stderr_file_action == nullptr))
+ {
+ // Send stdout/stderr over the gdb-remote protocol.
+ return true;
+ }
+
+ // Any other setting for either stdout or stderr implies we are either suppressing
+ // it (with /dev/null) or we've got it set to a PTY. Either way, we don't want the
+ // output over gdb-remote.
+ return false;
+}
+
+lldb_private::Error
+GDBRemoteCommunicationServerLLGS::AttachToProcess (lldb::pid_t pid)
+{
+ Error error;
+
+ Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64, __FUNCTION__, pid);
+
+ // Scope for mutex locker.
+ {
+ // Before we try to attach, make sure we aren't already monitoring something else.
+ Mutex::Locker locker (m_spawned_pids_mutex);
+ if (!m_spawned_pids.empty ())
+ {
+ error.SetErrorStringWithFormat ("cannot attach to a process %" PRIu64 " when another process with pid %" PRIu64 " is being debugged.", pid, *m_spawned_pids.begin());
+ return error;
+ }
+
+ // Try to attach.
+ error = m_platform_sp->AttachNativeProcess (pid, *this, m_debugged_process_sp);
+ if (!error.Success ())
+ {
+ fprintf (stderr, "%s: failed to attach to process %" PRIu64 ": %s", __FUNCTION__, pid, error.AsCString ());
+ return error;
+ }
+
+ // Setup stdout/stderr mapping from inferior.
+ auto terminal_fd = m_debugged_process_sp->GetTerminalFileDescriptor ();
+ if (terminal_fd >= 0)
+ {
+ if (log)
+ log->Printf ("ProcessGDBRemoteCommunicationServerLLGS::%s setting inferior STDIO fd to %d", __FUNCTION__, terminal_fd);
+ error = SetSTDIOFileDescriptor (terminal_fd);
+ if (error.Fail ())
+ return error;
+ }
+ else
+ {
+ if (log)
+ log->Printf ("ProcessGDBRemoteCommunicationServerLLGS::%s ignoring inferior STDIO since terminal fd reported as %d", __FUNCTION__, terminal_fd);
+ }
+
+ printf ("Attached to process %" PRIu64 "...\n", pid);
+
+ // Add to list of spawned processes.
+ assert (m_spawned_pids.empty () && "lldb-gdbserver adding tracked process but one already existed");
+ m_spawned_pids.insert (pid);
+
+ return error;
+ }
+}
+
+void
+GDBRemoteCommunicationServerLLGS::InitializeDelegate (lldb_private::NativeProcessProtocol *process)
+{
+ assert (process && "process cannot be NULL");
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called with NativeProcessProtocol pid %" PRIu64 ", current state: %s",
+ __FUNCTION__,
+ process->GetID (),
+ StateAsCString (process->GetState ()));
+ }
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::SendWResponse (lldb_private::NativeProcessProtocol *process)
+{
+ assert (process && "process cannot be NULL");
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // send W notification
+ ExitType exit_type = ExitType::eExitTypeInvalid;
+ int return_code = 0;
+ std::string exit_description;
+
+ const bool got_exit_info = process->GetExitStatus (&exit_type, &return_code, exit_description);
+ if (!got_exit_info)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 ", failed to retrieve process exit status", __FUNCTION__, process->GetID ());
+
+ StreamGDBRemote response;
+ response.PutChar ('E');
+ response.PutHex8 (GDBRemoteServerError::eErrorExitStatus);
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+ }
+ else
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 ", returning exit type %d, return code %d [%s]", __FUNCTION__, process->GetID (), exit_type, return_code, exit_description.c_str ());
+
+ StreamGDBRemote response;
+
+ char return_type_code;
+ switch (exit_type)
+ {
+ case ExitType::eExitTypeExit:
+ return_type_code = 'W';
+ break;
+ case ExitType::eExitTypeSignal:
+ return_type_code = 'X';
+ break;
+ case ExitType::eExitTypeStop:
+ return_type_code = 'S';
+ break;
+ case ExitType::eExitTypeInvalid:
+ return_type_code = 'E';
+ break;
+ }
+ response.PutChar (return_type_code);
+
+ // POSIX exit status limited to unsigned 8 bits.
+ response.PutHex8 (return_code);
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+ }
+}
+
+static void
+AppendHexValue (StreamString &response, const uint8_t* buf, uint32_t buf_size, bool swap)
+{
+ int64_t i;
+ if (swap)
+ {
+ for (i = buf_size-1; i >= 0; i--)
+ response.PutHex8 (buf[i]);
+ }
+ else
+ {
+ for (i = 0; i < buf_size; i++)
+ response.PutHex8 (buf[i]);
+ }
+}
+
+static void
+WriteRegisterValueInHexFixedWidth (StreamString &response,
+ NativeRegisterContextSP ®_ctx_sp,
+ const RegisterInfo ®_info,
+ const RegisterValue *reg_value_p)
+{
+ RegisterValue reg_value;
+ if (!reg_value_p)
+ {
+ Error error = reg_ctx_sp->ReadRegister (®_info, reg_value);
+ if (error.Success ())
+ reg_value_p = ®_value;
+ // else log.
+ }
+
+ if (reg_value_p)
+ {
+ AppendHexValue (response, (const uint8_t*) reg_value_p->GetBytes (), reg_value_p->GetByteSize (), false);
+ }
+ else
+ {
+ // Zero-out any unreadable values.
+ if (reg_info.byte_size > 0)
+ {
+ std::basic_string<uint8_t> zeros(reg_info.byte_size, '\0');
+ AppendHexValue (response, zeros.data(), zeros.size(), false);
+ }
+ }
+}
+
+static void
+WriteGdbRegnumWithFixedWidthHexRegisterValue (StreamString &response,
+ NativeRegisterContextSP ®_ctx_sp,
+ const RegisterInfo ®_info,
+ const RegisterValue ®_value)
+{
+ // Output the register number as 'NN:VVVVVVVV;' where NN is a 2 bytes HEX
+ // gdb register number, and VVVVVVVV is the correct number of hex bytes
+ // as ASCII for the register value.
+ if (reg_info.kinds[eRegisterKindGDB] == LLDB_INVALID_REGNUM)
+ return;
+
+ response.Printf ("%.02x:", reg_info.kinds[eRegisterKindGDB]);
+ WriteRegisterValueInHexFixedWidth (response, reg_ctx_sp, reg_info, ®_value);
+ response.PutChar (';');
+}
+
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::SendStopReplyPacketForThread (lldb::tid_t tid)
+{
+ Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD));
+
+ // Ensure we have a debugged process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ return SendErrorResponse (50);
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s preparing packet for pid %" PRIu64 " tid %" PRIu64,
+ __FUNCTION__, m_debugged_process_sp->GetID (), tid);
+
+ // Ensure we can get info on the given thread.
+ NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadByID (tid));
+ if (!thread_sp)
+ return SendErrorResponse (51);
+
+ // Grab the reason this thread stopped.
+ struct ThreadStopInfo tid_stop_info;
+ std::string description;
+ if (!thread_sp->GetStopReason (tid_stop_info, description))
+ return SendErrorResponse (52);
+
+ // FIXME implement register handling for exec'd inferiors.
+ // if (tid_stop_info.reason == eStopReasonExec)
+ // {
+ // const bool force = true;
+ // InitializeRegisters(force);
+ // }
+
+ StreamString response;
+ // Output the T packet with the thread
+ response.PutChar ('T');
+ int signum = tid_stop_info.details.signal.signo;
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " got signal signo = %d, reason = %d, exc_type = %" PRIu64,
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ tid,
+ signum,
+ tid_stop_info.reason,
+ tid_stop_info.details.exception.type);
+ }
+
+ // Print the signal number.
+ response.PutHex8 (signum & 0xff);
+
+ // Include the tid.
+ response.Printf ("thread:%" PRIx64 ";", tid);
+
+ // Include the thread name if there is one.
+ const std::string thread_name = thread_sp->GetName ();
+ if (!thread_name.empty ())
+ {
+ size_t thread_name_len = thread_name.length ();
+
+ if (::strcspn (thread_name.c_str (), "$#+-;:") == thread_name_len)
+ {
+ response.PutCString ("name:");
+ response.PutCString (thread_name.c_str ());
+ }
+ else
+ {
+ // The thread name contains special chars, send as hex bytes.
+ response.PutCString ("hexname:");
+ response.PutCStringAsRawHex8 (thread_name.c_str ());
+ }
+ response.PutChar (';');
+ }
+
+ // If a 'QListThreadsInStopReply' was sent to enable this feature, we
+ // will send all thread IDs back in the "threads" key whose value is
+ // a list of hex thread IDs separated by commas:
+ // "threads:10a,10b,10c;"
+ // This will save the debugger from having to send a pair of qfThreadInfo
+ // and qsThreadInfo packets, but it also might take a lot of room in the
+ // stop reply packet, so it must be enabled only on systems where there
+ // are no limits on packet lengths.
+ if (m_list_threads_in_stop_reply)
+ {
+ response.PutCString ("threads:");
+
+ uint32_t thread_index = 0;
+ NativeThreadProtocolSP listed_thread_sp;
+ for (listed_thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index); listed_thread_sp; ++thread_index, listed_thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index))
+ {
+ if (thread_index > 0)
+ response.PutChar (',');
+ response.Printf ("%" PRIx64, listed_thread_sp->GetID ());
+ }
+ response.PutChar (';');
+ }
+
+ //
+ // Expedite registers.
+ //
+
+ // Grab the register context.
+ NativeRegisterContextSP reg_ctx_sp = thread_sp->GetRegisterContext ();
+ if (reg_ctx_sp)
+ {
+ // Expedite all registers in the first register set (i.e. should be GPRs) that are not contained in other registers.
+ const RegisterSet *reg_set_p;
+ if (reg_ctx_sp->GetRegisterSetCount () > 0 && ((reg_set_p = reg_ctx_sp->GetRegisterSet (0)) != nullptr))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s expediting registers from set '%s' (registers set count: %zu)", __FUNCTION__, reg_set_p->name ? reg_set_p->name : "<unnamed-set>", reg_set_p->num_registers);
+
+ for (const uint32_t *reg_num_p = reg_set_p->registers; *reg_num_p != LLDB_INVALID_REGNUM; ++reg_num_p)
+ {
+ const RegisterInfo *const reg_info_p = reg_ctx_sp->GetRegisterInfoAtIndex (*reg_num_p);
+ if (reg_info_p == nullptr)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to get register info for register set '%s', register index %" PRIu32, __FUNCTION__, reg_set_p->name ? reg_set_p->name : "<unnamed-set>", *reg_num_p);
+ }
+ else if (reg_info_p->value_regs == nullptr)
+ {
+ // Only expediate registers that are not contained in other registers.
+ RegisterValue reg_value;
+ Error error = reg_ctx_sp->ReadRegister (reg_info_p, reg_value);
+ if (error.Success ())
+ WriteGdbRegnumWithFixedWidthHexRegisterValue (response, reg_ctx_sp, *reg_info_p, reg_value);
+ else
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to read register '%s' index %" PRIu32 ": %s", __FUNCTION__, reg_info_p->name ? reg_info_p->name : "<unnamed-register>", *reg_num_p, error.AsCString ());
+
+ }
+ }
+ }
+ }
+ }
+
+ const char* reason_str = nullptr;
+ switch (tid_stop_info.reason)
+ {
+ case eStopReasonTrace:
+ reason_str = "trace";
+ break;
+ case eStopReasonBreakpoint:
+ reason_str = "breakpoint";
+ break;
+ case eStopReasonWatchpoint:
+ reason_str = "watchpoint";
+ break;
+ case eStopReasonSignal:
+ reason_str = "signal";
+ break;
+ case eStopReasonException:
+ reason_str = "exception";
+ break;
+ case eStopReasonExec:
+ reason_str = "exec";
+ break;
+ case eStopReasonInstrumentation:
+ case eStopReasonInvalid:
+ case eStopReasonPlanComplete:
+ case eStopReasonThreadExiting:
+ case eStopReasonNone:
+ break;
+ }
+ if (reason_str != nullptr)
+ {
+ response.Printf ("reason:%s;", reason_str);
+ }
+
+ if (!description.empty())
+ {
+ // Description may contains special chars, send as hex bytes.
+ response.PutCString ("description:");
+ response.PutCStringAsRawHex8 (description.c_str ());
+ response.PutChar (';');
+ }
+ else if ((tid_stop_info.reason == eStopReasonException) && tid_stop_info.details.exception.type)
+ {
+ response.PutCString ("metype:");
+ response.PutHex64 (tid_stop_info.details.exception.type);
+ response.PutCString (";mecount:");
+ response.PutHex32 (tid_stop_info.details.exception.data_count);
+ response.PutChar (';');
+
+ for (uint32_t i = 0; i < tid_stop_info.details.exception.data_count; ++i)
+ {
+ response.PutCString ("medata:");
+ response.PutHex64 (tid_stop_info.details.exception.data[i]);
+ response.PutChar (';');
+ }
+ }
+
+ return SendPacketNoLock (response.GetData(), response.GetSize());
+}
+
+void
+GDBRemoteCommunicationServerLLGS::HandleInferiorState_Exited (lldb_private::NativeProcessProtocol *process)
+{
+ assert (process && "process cannot be NULL");
+
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called", __FUNCTION__);
+
+ // Send the exit result, and don't flush output.
+ // Note: flushing output here would join the inferior stdio reflection thread, which
+ // would gunk up the waitpid monitor thread that is calling this.
+ PacketResult result = SendStopReasonForState (StateType::eStateExited, false);
+ if (result != PacketResult::Success)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to send stop notification for PID %" PRIu64 ", state: eStateExited", __FUNCTION__, process->GetID ());
+ }
+
+ // Remove the process from the list of spawned pids.
+ {
+ Mutex::Locker locker (m_spawned_pids_mutex);
+ if (m_spawned_pids.erase (process->GetID ()) < 1)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to remove PID %" PRIu64 " from the spawned pids list", __FUNCTION__, process->GetID ());
+
+ }
+ }
+
+ // FIXME can't do this yet - since process state propagation is currently
+ // synchronous, it is running off the NativeProcessProtocol's innards and
+ // will tear down the NPP while it still has code to execute.
+#if 0
+ // Clear the NativeProcessProtocol pointer.
+ {
+ Mutex::Locker locker (m_debugged_process_mutex);
+ m_debugged_process_sp.reset();
+ }
+#endif
+
+ // Close the pipe to the inferior terminal i/o if we launched it
+ // and set one up. Otherwise, 'k' and its flush of stdio could
+ // end up waiting on a thread join that will never end. Consider
+ // adding a timeout to the connection thread join call so we
+ // can avoid that scenario altogether.
+ MaybeCloseInferiorTerminalConnection ();
+
+ // We are ready to exit the debug monitor.
+ m_exit_now = true;
+}
+
+void
+GDBRemoteCommunicationServerLLGS::HandleInferiorState_Stopped (lldb_private::NativeProcessProtocol *process)
+{
+ assert (process && "process cannot be NULL");
+
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called", __FUNCTION__);
+
+ // Send the stop reason unless this is the stop after the
+ // launch or attach.
+ switch (m_inferior_prev_state)
+ {
+ case eStateLaunching:
+ case eStateAttaching:
+ // Don't send anything per debugserver behavior.
+ break;
+ default:
+ // In all other cases, send the stop reason.
+ PacketResult result = SendStopReasonForState (StateType::eStateStopped, false);
+ if (result != PacketResult::Success)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to send stop notification for PID %" PRIu64 ", state: eStateExited", __FUNCTION__, process->GetID ());
+ }
+ break;
+ }
+}
+
+void
+GDBRemoteCommunicationServerLLGS::ProcessStateChanged (lldb_private::NativeProcessProtocol *process, lldb::StateType state)
+{
+ assert (process && "process cannot be NULL");
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called with NativeProcessProtocol pid %" PRIu64 ", state: %s",
+ __FUNCTION__,
+ process->GetID (),
+ StateAsCString (state));
+ }
+
+ switch (state)
+ {
+ case StateType::eStateExited:
+ HandleInferiorState_Exited (process);
+ break;
+
+ case StateType::eStateStopped:
+ HandleInferiorState_Stopped (process);
+ break;
+
+ default:
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s didn't handle state change for pid %" PRIu64 ", new state: %s",
+ __FUNCTION__,
+ process->GetID (),
+ StateAsCString (state));
+ }
+ break;
+ }
+
+ // Remember the previous state reported to us.
+ m_inferior_prev_state = state;
+}
+
+void
+GDBRemoteCommunicationServerLLGS::DidExec (NativeProcessProtocol *process)
+{
+ ClearProcessSpecificData ();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::SendONotification (const char *buffer, uint32_t len)
+{
+ if ((buffer == nullptr) || (len == 0))
+ {
+ // Nothing to send.
+ return PacketResult::Success;
+ }
+
+ StreamString response;
+ response.PutChar ('O');
+ response.PutBytesAsRawHex8 (buffer, len);
+
+ return SendPacketNoLock (response.GetData (), response.GetSize ());
+}
+
+lldb_private::Error
+GDBRemoteCommunicationServerLLGS::SetSTDIOFileDescriptor (int fd)
+{
+ Error error;
+
+ // Set up the Read Thread for reading/handling process I/O
+ std::unique_ptr<ConnectionFileDescriptor> conn_up (new ConnectionFileDescriptor (fd, true));
+ if (!conn_up)
+ {
+ error.SetErrorString ("failed to create ConnectionFileDescriptor");
+ return error;
+ }
+
+ m_stdio_communication.SetConnection (conn_up.release());
+ if (!m_stdio_communication.IsConnected ())
+ {
+ error.SetErrorString ("failed to set connection for inferior I/O communication");
+ return error;
+ }
+
+ m_stdio_communication.SetReadThreadBytesReceivedCallback (STDIOReadThreadBytesReceived, this);
+ m_stdio_communication.StartReadThread();
+
+ return error;
+}
+
+void
+GDBRemoteCommunicationServerLLGS::STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len)
+{
+ GDBRemoteCommunicationServerLLGS *server = reinterpret_cast<GDBRemoteCommunicationServerLLGS*> (baton);
+ static_cast<void> (server->SendONotification (static_cast<const char *>(src), src_len));
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qProcessInfo (StringExtractorGDBRemote &packet)
+{
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ return SendErrorResponse (68);
+
+ lldb::pid_t pid = m_debugged_process_sp->GetID ();
+
+ if (pid == LLDB_INVALID_PROCESS_ID)
+ return SendErrorResponse (1);
+
+ ProcessInstanceInfo proc_info;
+ if (!Host::GetProcessInfo (pid, proc_info))
+ return SendErrorResponse (1);
+
+ StreamString response;
+ CreateProcessInfoResponse_DebugServerStyle(proc_info, response);
+ return SendPacketNoLock (response.GetData (), response.GetSize ());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qC (StringExtractorGDBRemote &packet)
+{
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ return SendErrorResponse (68);
+
+ // Make sure we set the current thread so g and p packets return
+ // the data the gdb will expect.
+ lldb::tid_t tid = m_debugged_process_sp->GetCurrentThreadID ();
+ SetCurrentThreadID (tid);
+
+ NativeThreadProtocolSP thread_sp = m_debugged_process_sp->GetCurrentThread ();
+ if (!thread_sp)
+ return SendErrorResponse (69);
+
+ StreamString response;
+ response.Printf ("QC%" PRIx64, thread_sp->GetID ());
+
+ return SendPacketNoLock (response.GetData(), response.GetSize());
+}
+
+bool
+GDBRemoteCommunicationServerLLGS::DebuggedProcessReaped (lldb::pid_t pid)
+{
+ // reap a process that we were debugging (but not debugserver)
+ Mutex::Locker locker (m_spawned_pids_mutex);
+ return m_spawned_pids.erase(pid) > 0;
+}
+
+bool
+GDBRemoteCommunicationServerLLGS::ReapDebuggedProcess (void *callback_baton,
+ lldb::pid_t pid,
+ bool exited,
+ int signal, // Zero for no signal
+ int status) // Exit value of process if signal is zero
+{
+ GDBRemoteCommunicationServerLLGS *server = (GDBRemoteCommunicationServerLLGS *)callback_baton;
+ server->DebuggedProcessReaped (pid);
+ return true;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_k (StringExtractorGDBRemote &packet)
+{
+ // shutdown all spawned processes
+ std::set<lldb::pid_t> spawned_pids_copy;
+
+ // copy pids
+ {
+ Mutex::Locker locker (m_spawned_pids_mutex);
+ spawned_pids_copy.insert (m_spawned_pids.begin (), m_spawned_pids.end ());
+ }
+
+ // nuke the spawned processes
+ for (auto it = spawned_pids_copy.begin (); it != spawned_pids_copy.end (); ++it)
+ {
+ lldb::pid_t spawned_pid = *it;
+ if (!KillSpawnedProcess (spawned_pid))
+ {
+ fprintf (stderr, "%s: failed to kill spawned pid %" PRIu64 ", ignoring.\n", __FUNCTION__, spawned_pid);
+ }
+ }
+
+ FlushInferiorOutput ();
+
+ // No OK response for kill packet.
+ // return SendOKResponse ();
+ return PacketResult::Success;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_QSetDisableASLR (StringExtractorGDBRemote &packet)
+{
+ packet.SetFilePos(::strlen ("QSetDisableASLR:"));
+ if (packet.GetU32(0))
+ m_process_launch_info.GetFlags().Set (eLaunchFlagDisableASLR);
+ else
+ m_process_launch_info.GetFlags().Clear (eLaunchFlagDisableASLR);
+ return SendOKResponse ();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_QSetWorkingDir (StringExtractorGDBRemote &packet)
+{
+ packet.SetFilePos (::strlen ("QSetWorkingDir:"));
+ std::string path;
+ packet.GetHexByteString (path);
+ m_process_launch_info.SwapWorkingDirectory (path);
+ return SendOKResponse ();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qGetWorkingDir (StringExtractorGDBRemote &packet)
+{
+ const char *working_dir = m_process_launch_info.GetWorkingDirectory();
+ if (working_dir && working_dir[0])
+ {
+ StreamString response;
+ response.PutBytesAsRawHex8(working_dir, strlen(working_dir));
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+ }
+
+ return SendErrorResponse(14);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_C (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called", __FUNCTION__);
+
+ // Ensure we have a native process.
+ if (!m_debugged_process_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s no debugged process shared pointer", __FUNCTION__);
+ return SendErrorResponse (0x36);
+ }
+
+ // Pull out the signal number.
+ packet.SetFilePos (::strlen ("C"));
+ if (packet.GetBytesLeft () < 1)
+ {
+ // Shouldn't be using a C without a signal.
+ return SendIllFormedResponse (packet, "C packet specified without signal.");
+ }
+ const uint32_t signo = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (signo == std::numeric_limits<uint32_t>::max ())
+ return SendIllFormedResponse (packet, "failed to parse signal number");
+
+ // Handle optional continue address.
+ if (packet.GetBytesLeft () > 0)
+ {
+ // FIXME add continue at address support for $C{signo}[;{continue-address}].
+ if (*packet.Peek () == ';')
+ return SendUnimplementedResponse (packet.GetStringRef().c_str());
+ else
+ return SendIllFormedResponse (packet, "unexpected content after $C{signal-number}");
+ }
+
+ lldb_private::ResumeActionList resume_actions (StateType::eStateRunning, 0);
+ Error error;
+
+ // We have two branches: what to do if a continue thread is specified (in which case we target
+ // sending the signal to that thread), or when we don't have a continue thread set (in which
+ // case we send a signal to the process).
+
+ // TODO discuss with Greg Clayton, make sure this makes sense.
+
+ lldb::tid_t signal_tid = GetContinueThreadID ();
+ if (signal_tid != LLDB_INVALID_THREAD_ID)
+ {
+ // The resume action for the continue thread (or all threads if a continue thread is not set).
+ lldb_private::ResumeAction action = { GetContinueThreadID (), StateType::eStateRunning, static_cast<int> (signo) };
+
+ // Add the action for the continue thread (or all threads when the continue thread isn't present).
+ resume_actions.Append (action);
+ }
+ else
+ {
+ // Send the signal to the process since we weren't targeting a specific continue thread with the signal.
+ error = m_debugged_process_sp->Signal (signo);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to send signal for process %" PRIu64 ": %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+
+ return SendErrorResponse (0x52);
+ }
+ }
+
+ // Resume the threads.
+ error = m_debugged_process_sp->Resume (resume_actions);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to resume threads for process %" PRIu64 ": %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+
+ return SendErrorResponse (0x38);
+ }
+
+ // Don't send an "OK" packet; response is the stopped/exited message.
+ return PacketResult::Success;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_c (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s called", __FUNCTION__);
+
+ packet.SetFilePos (packet.GetFilePos() + ::strlen ("c"));
+
+ // For now just support all continue.
+ const bool has_continue_address = (packet.GetBytesLeft () > 0);
+ if (has_continue_address)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s not implemented for c{address} variant [%s remains]", __FUNCTION__, packet.Peek ());
+ return SendUnimplementedResponse (packet.GetStringRef().c_str());
+ }
+
+ // Ensure we have a native process.
+ if (!m_debugged_process_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s no debugged process shared pointer", __FUNCTION__);
+ return SendErrorResponse (0x36);
+ }
+
+ // Build the ResumeActionList
+ lldb_private::ResumeActionList actions (StateType::eStateRunning, 0);
+
+ Error error = m_debugged_process_sp->Resume (actions);
+ if (error.Fail ())
+ {
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s c failed for process %" PRIu64 ": %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ }
+ return SendErrorResponse (GDBRemoteServerError::eErrorResume);
+ }
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s continued process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ());
+
+ // No response required from continue.
+ return PacketResult::Success;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_vCont_actions (StringExtractorGDBRemote &packet)
+{
+ StreamString response;
+ response.Printf("vCont;c;C;s;S");
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_vCont (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s handling vCont packet", __FUNCTION__);
+
+ packet.SetFilePos (::strlen ("vCont"));
+
+ if (packet.GetBytesLeft() == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s missing action from vCont package", __FUNCTION__);
+ return SendIllFormedResponse (packet, "Missing action from vCont package");
+ }
+
+ // Check if this is all continue (no options or ";c").
+ if (::strcmp (packet.Peek (), ";c") == 0)
+ {
+ // Move past the ';', then do a simple 'c'.
+ packet.SetFilePos (packet.GetFilePos () + 1);
+ return Handle_c (packet);
+ }
+ else if (::strcmp (packet.Peek (), ";s") == 0)
+ {
+ // Move past the ';', then do a simple 's'.
+ packet.SetFilePos (packet.GetFilePos () + 1);
+ return Handle_s (packet);
+ }
+
+ // Ensure we have a native process.
+ if (!m_debugged_process_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s no debugged process shared pointer", __FUNCTION__);
+ return SendErrorResponse (0x36);
+ }
+
+ ResumeActionList thread_actions;
+
+ while (packet.GetBytesLeft () && *packet.Peek () == ';')
+ {
+ // Skip the semi-colon.
+ packet.GetChar ();
+
+ // Build up the thread action.
+ ResumeAction thread_action;
+ thread_action.tid = LLDB_INVALID_THREAD_ID;
+ thread_action.state = eStateInvalid;
+ thread_action.signal = 0;
+
+ const char action = packet.GetChar ();
+ switch (action)
+ {
+ case 'C':
+ thread_action.signal = packet.GetHexMaxU32 (false, 0);
+ if (thread_action.signal == 0)
+ return SendIllFormedResponse (packet, "Could not parse signal in vCont packet C action");
+ // Fall through to next case...
+
+ case 'c':
+ // Continue
+ thread_action.state = eStateRunning;
+ break;
+
+ case 'S':
+ thread_action.signal = packet.GetHexMaxU32 (false, 0);
+ if (thread_action.signal == 0)
+ return SendIllFormedResponse (packet, "Could not parse signal in vCont packet S action");
+ // Fall through to next case...
+
+ case 's':
+ // Step
+ thread_action.state = eStateStepping;
+ break;
+
+ default:
+ return SendIllFormedResponse (packet, "Unsupported vCont action");
+ break;
+ }
+
+ // Parse out optional :{thread-id} value.
+ if (packet.GetBytesLeft () && (*packet.Peek () == ':'))
+ {
+ // Consume the separator.
+ packet.GetChar ();
+
+ thread_action.tid = packet.GetHexMaxU32 (false, LLDB_INVALID_THREAD_ID);
+ if (thread_action.tid == LLDB_INVALID_THREAD_ID)
+ return SendIllFormedResponse (packet, "Could not parse thread number in vCont packet");
+ }
+
+ thread_actions.Append (thread_action);
+ }
+
+ Error error = m_debugged_process_sp->Resume (thread_actions);
+ if (error.Fail ())
+ {
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s vCont failed for process %" PRIu64 ": %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ }
+ return SendErrorResponse (GDBRemoteServerError::eErrorResume);
+ }
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s continued process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ());
+
+ // No response required from vCont.
+ return PacketResult::Success;
+}
+
+void
+GDBRemoteCommunicationServerLLGS::SetCurrentThreadID (lldb::tid_t tid)
+{
+ Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_THREAD));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s setting current thread id to %" PRIu64, __FUNCTION__, tid);
+
+ m_current_tid = tid;
+ if (m_debugged_process_sp)
+ m_debugged_process_sp->SetCurrentThreadID (m_current_tid);
+}
+
+void
+GDBRemoteCommunicationServerLLGS::SetContinueThreadID (lldb::tid_t tid)
+{
+ Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_THREAD));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s setting continue thread id to %" PRIu64, __FUNCTION__, tid);
+
+ m_continue_tid = tid;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_stop_reason (StringExtractorGDBRemote &packet)
+{
+ // Handle the $? gdbremote command.
+
+ // If no process, indicate error
+ if (!m_debugged_process_sp)
+ return SendErrorResponse (02);
+
+ return SendStopReasonForState (m_debugged_process_sp->GetState (), true);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::SendStopReasonForState (lldb::StateType process_state, bool flush_on_exit)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ switch (process_state)
+ {
+ case eStateAttaching:
+ case eStateLaunching:
+ case eStateRunning:
+ case eStateStepping:
+ case eStateDetached:
+ // NOTE: gdb protocol doc looks like it should return $OK
+ // when everything is running (i.e. no stopped result).
+ return PacketResult::Success; // Ignore
+
+ case eStateSuspended:
+ case eStateStopped:
+ case eStateCrashed:
+ {
+ lldb::tid_t tid = m_debugged_process_sp->GetCurrentThreadID ();
+ // Make sure we set the current thread so g and p packets return
+ // the data the gdb will expect.
+ SetCurrentThreadID (tid);
+ return SendStopReplyPacketForThread (tid);
+ }
+
+ case eStateInvalid:
+ case eStateUnloaded:
+ case eStateExited:
+ if (flush_on_exit)
+ FlushInferiorOutput ();
+ return SendWResponse(m_debugged_process_sp.get());
+
+ default:
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 ", current state reporting not handled: %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ StateAsCString (process_state));
+ }
+ break;
+ }
+
+ return SendErrorResponse (0);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qRegisterInfo (StringExtractorGDBRemote &packet)
+{
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ return SendErrorResponse (68);
+
+ // Ensure we have a thread.
+ NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadAtIndex (0));
+ if (!thread_sp)
+ return SendErrorResponse (69);
+
+ // Get the register context for the first thread.
+ NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ());
+ if (!reg_context_sp)
+ return SendErrorResponse (69);
+
+ // Parse out the register number from the request.
+ packet.SetFilePos (strlen("qRegisterInfo"));
+ const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (reg_index == std::numeric_limits<uint32_t>::max ())
+ return SendErrorResponse (69);
+
+ // Return the end of registers response if we've iterated one past the end of the register set.
+ if (reg_index >= reg_context_sp->GetUserRegisterCount ())
+ return SendErrorResponse (69);
+
+ const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex(reg_index);
+ if (!reg_info)
+ return SendErrorResponse (69);
+
+ // Build the reginfos response.
+ StreamGDBRemote response;
+
+ response.PutCString ("name:");
+ response.PutCString (reg_info->name);
+ response.PutChar (';');
+
+ if (reg_info->alt_name && reg_info->alt_name[0])
+ {
+ response.PutCString ("alt-name:");
+ response.PutCString (reg_info->alt_name);
+ response.PutChar (';');
+ }
+
+ response.Printf ("bitsize:%" PRIu32 ";offset:%" PRIu32 ";", reg_info->byte_size * 8, reg_info->byte_offset);
+
+ switch (reg_info->encoding)
+ {
+ case eEncodingUint: response.PutCString ("encoding:uint;"); break;
+ case eEncodingSint: response.PutCString ("encoding:sint;"); break;
+ case eEncodingIEEE754: response.PutCString ("encoding:ieee754;"); break;
+ case eEncodingVector: response.PutCString ("encoding:vector;"); break;
+ default: break;
+ }
+
+ switch (reg_info->format)
+ {
+ case eFormatBinary: response.PutCString ("format:binary;"); break;
+ case eFormatDecimal: response.PutCString ("format:decimal;"); break;
+ case eFormatHex: response.PutCString ("format:hex;"); break;
+ case eFormatFloat: response.PutCString ("format:float;"); break;
+ case eFormatVectorOfSInt8: response.PutCString ("format:vector-sint8;"); break;
+ case eFormatVectorOfUInt8: response.PutCString ("format:vector-uint8;"); break;
+ case eFormatVectorOfSInt16: response.PutCString ("format:vector-sint16;"); break;
+ case eFormatVectorOfUInt16: response.PutCString ("format:vector-uint16;"); break;
+ case eFormatVectorOfSInt32: response.PutCString ("format:vector-sint32;"); break;
+ case eFormatVectorOfUInt32: response.PutCString ("format:vector-uint32;"); break;
+ case eFormatVectorOfFloat32: response.PutCString ("format:vector-float32;"); break;
+ case eFormatVectorOfUInt128: response.PutCString ("format:vector-uint128;"); break;
+ default: break;
+ };
+
+ const char *const register_set_name = reg_context_sp->GetRegisterSetNameForRegisterAtIndex(reg_index);
+ if (register_set_name)
+ {
+ response.PutCString ("set:");
+ response.PutCString (register_set_name);
+ response.PutChar (';');
+ }
+
+ if (reg_info->kinds[RegisterKind::eRegisterKindGCC] != LLDB_INVALID_REGNUM)
+ response.Printf ("gcc:%" PRIu32 ";", reg_info->kinds[RegisterKind::eRegisterKindGCC]);
+
+ if (reg_info->kinds[RegisterKind::eRegisterKindDWARF] != LLDB_INVALID_REGNUM)
+ response.Printf ("dwarf:%" PRIu32 ";", reg_info->kinds[RegisterKind::eRegisterKindDWARF]);
+
+ switch (reg_info->kinds[RegisterKind::eRegisterKindGeneric])
+ {
+ case LLDB_REGNUM_GENERIC_PC: response.PutCString("generic:pc;"); break;
+ case LLDB_REGNUM_GENERIC_SP: response.PutCString("generic:sp;"); break;
+ case LLDB_REGNUM_GENERIC_FP: response.PutCString("generic:fp;"); break;
+ case LLDB_REGNUM_GENERIC_RA: response.PutCString("generic:ra;"); break;
+ case LLDB_REGNUM_GENERIC_FLAGS: response.PutCString("generic:flags;"); break;
+ case LLDB_REGNUM_GENERIC_ARG1: response.PutCString("generic:arg1;"); break;
+ case LLDB_REGNUM_GENERIC_ARG2: response.PutCString("generic:arg2;"); break;
+ case LLDB_REGNUM_GENERIC_ARG3: response.PutCString("generic:arg3;"); break;
+ case LLDB_REGNUM_GENERIC_ARG4: response.PutCString("generic:arg4;"); break;
+ case LLDB_REGNUM_GENERIC_ARG5: response.PutCString("generic:arg5;"); break;
+ case LLDB_REGNUM_GENERIC_ARG6: response.PutCString("generic:arg6;"); break;
+ case LLDB_REGNUM_GENERIC_ARG7: response.PutCString("generic:arg7;"); break;
+ case LLDB_REGNUM_GENERIC_ARG8: response.PutCString("generic:arg8;"); break;
+ default: break;
+ }
+
+ if (reg_info->value_regs && reg_info->value_regs[0] != LLDB_INVALID_REGNUM)
+ {
+ response.PutCString ("container-regs:");
+ int i = 0;
+ for (const uint32_t *reg_num = reg_info->value_regs; *reg_num != LLDB_INVALID_REGNUM; ++reg_num, ++i)
+ {
+ if (i > 0)
+ response.PutChar (',');
+ response.Printf ("%" PRIx32, *reg_num);
+ }
+ response.PutChar (';');
+ }
+
+ if (reg_info->invalidate_regs && reg_info->invalidate_regs[0])
+ {
+ response.PutCString ("invalidate-regs:");
+ int i = 0;
+ for (const uint32_t *reg_num = reg_info->invalidate_regs; *reg_num != LLDB_INVALID_REGNUM; ++reg_num, ++i)
+ {
+ if (i > 0)
+ response.PutChar (',');
+ response.Printf ("%" PRIx32, *reg_num);
+ }
+ response.PutChar (';');
+ }
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qfThreadInfo (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s() no process (%s), returning OK", __FUNCTION__, m_debugged_process_sp ? "invalid process id" : "null m_debugged_process_sp");
+ return SendOKResponse ();
+ }
+
+ StreamGDBRemote response;
+ response.PutChar ('m');
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s() starting thread iteration", __FUNCTION__);
+
+ NativeThreadProtocolSP thread_sp;
+ uint32_t thread_index;
+ for (thread_index = 0, thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index);
+ thread_sp;
+ ++thread_index, thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s() iterated thread %" PRIu32 "(%s, tid=0x%" PRIx64 ")", __FUNCTION__, thread_index, thread_sp ? "is not null" : "null", thread_sp ? thread_sp->GetID () : LLDB_INVALID_THREAD_ID);
+ if (thread_index > 0)
+ response.PutChar(',');
+ response.Printf ("%" PRIx64, thread_sp->GetID ());
+ }
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s() finished thread iteration", __FUNCTION__);
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qsThreadInfo (StringExtractorGDBRemote &packet)
+{
+ // FIXME for now we return the full thread list in the initial packet and always do nothing here.
+ return SendPacketNoLock ("l", 1);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_p (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Parse out the register number from the request.
+ packet.SetFilePos (strlen("p"));
+ const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (reg_index == std::numeric_limits<uint32_t>::max ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, could not parse register number from request \"%s\"", __FUNCTION__, packet.GetStringRef ().c_str ());
+ return SendErrorResponse (0x15);
+ }
+
+ // Get the thread to use.
+ NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet);
+ if (!thread_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no thread available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Get the thread's register context.
+ NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ());
+ if (!reg_context_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ());
+ return SendErrorResponse (0x15);
+ }
+
+ // Return the end of registers response if we've iterated one past the end of the register set.
+ if (reg_index >= reg_context_sp->GetUserRegisterCount ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, requested register %" PRIu32 " beyond register count %" PRIu32, __FUNCTION__, reg_index, reg_context_sp->GetUserRegisterCount ());
+ return SendErrorResponse (0x15);
+ }
+
+ const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex(reg_index);
+ if (!reg_info)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, requested register %" PRIu32 " returned NULL", __FUNCTION__, reg_index);
+ return SendErrorResponse (0x15);
+ }
+
+ // Build the reginfos response.
+ StreamGDBRemote response;
+
+ // Retrieve the value
+ RegisterValue reg_value;
+ Error error = reg_context_sp->ReadRegister (reg_info, reg_value);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, read of requested register %" PRIu32 " (%s) failed: %s", __FUNCTION__, reg_index, reg_info->name, error.AsCString ());
+ return SendErrorResponse (0x15);
+ }
+
+ const uint8_t *const data = reinterpret_cast<const uint8_t*> (reg_value.GetBytes ());
+ if (!data)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to get data bytes from requested register %" PRIu32, __FUNCTION__, reg_index);
+ return SendErrorResponse (0x15);
+ }
+
+ // FIXME flip as needed to get data in big/little endian format for this host.
+ for (uint32_t i = 0; i < reg_value.GetByteSize (); ++i)
+ response.PutHex8 (data[i]);
+
+ return SendPacketNoLock (response.GetData (), response.GetSize ());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_P (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Ensure there is more content.
+ if (packet.GetBytesLeft () < 1)
+ return SendIllFormedResponse (packet, "Empty P packet");
+
+ // Parse out the register number from the request.
+ packet.SetFilePos (strlen("P"));
+ const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (reg_index == std::numeric_limits<uint32_t>::max ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, could not parse register number from request \"%s\"", __FUNCTION__, packet.GetStringRef ().c_str ());
+ return SendErrorResponse (0x29);
+ }
+
+ // Note debugserver would send an E30 here.
+ if ((packet.GetBytesLeft () < 1) || (packet.GetChar () != '='))
+ return SendIllFormedResponse (packet, "P packet missing '=' char after register number");
+
+ // Get process architecture.
+ ArchSpec process_arch;
+ if (!m_debugged_process_sp || !m_debugged_process_sp->GetArchitecture (process_arch))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to retrieve inferior architecture", __FUNCTION__);
+ return SendErrorResponse (0x49);
+ }
+
+ // Parse out the value.
+ uint8_t reg_bytes[32]; // big enough to support up to 256 bit ymmN register
+ size_t reg_size = packet.GetHexBytesAvail (reg_bytes, sizeof(reg_bytes));
+
+ // Get the thread to use.
+ NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet);
+ if (!thread_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no thread available (thread index 0)", __FUNCTION__);
+ return SendErrorResponse (0x28);
+ }
+
+ // Get the thread's register context.
+ NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ());
+ if (!reg_context_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ());
+ return SendErrorResponse (0x15);
+ }
+
+ const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex (reg_index);
+ if (!reg_info)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, requested register %" PRIu32 " returned NULL", __FUNCTION__, reg_index);
+ return SendErrorResponse (0x48);
+ }
+
+ // Return the end of registers response if we've iterated one past the end of the register set.
+ if (reg_index >= reg_context_sp->GetUserRegisterCount ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, requested register %" PRIu32 " beyond register count %" PRIu32, __FUNCTION__, reg_index, reg_context_sp->GetUserRegisterCount ());
+ return SendErrorResponse (0x47);
+ }
+
+ if (reg_size != reg_info->byte_size)
+ {
+ return SendIllFormedResponse (packet, "P packet register size is incorrect");
+ }
+
+ // Build the reginfos response.
+ StreamGDBRemote response;
+
+ RegisterValue reg_value (reg_bytes, reg_size, process_arch.GetByteOrder ());
+ Error error = reg_context_sp->WriteRegister (reg_info, reg_value);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, write of requested register %" PRIu32 " (%s) failed: %s", __FUNCTION__, reg_index, reg_info->name, error.AsCString ());
+ return SendErrorResponse (0x32);
+ }
+
+ return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_H (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out which variant of $H is requested.
+ packet.SetFilePos (strlen("H"));
+ if (packet.GetBytesLeft () < 1)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, H command missing {g,c} variant", __FUNCTION__);
+ return SendIllFormedResponse (packet, "H command missing {g,c} variant");
+ }
+
+ const char h_variant = packet.GetChar ();
+ switch (h_variant)
+ {
+ case 'g':
+ break;
+
+ case 'c':
+ break;
+
+ default:
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, invalid $H variant %c", __FUNCTION__, h_variant);
+ return SendIllFormedResponse (packet, "H variant unsupported, should be c or g");
+ }
+
+ // Parse out the thread number.
+ // FIXME return a parse success/fail value. All values are valid here.
+ const lldb::tid_t tid = packet.GetHexMaxU64 (false, std::numeric_limits<lldb::tid_t>::max ());
+
+ // Ensure we have the given thread when not specifying -1 (all threads) or 0 (any thread).
+ if (tid != LLDB_INVALID_THREAD_ID && tid != 0)
+ {
+ NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadByID (tid));
+ if (!thread_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, tid %" PRIu64 " not found", __FUNCTION__, tid);
+ return SendErrorResponse (0x15);
+ }
+ }
+
+ // Now switch the given thread type.
+ switch (h_variant)
+ {
+ case 'g':
+ SetCurrentThreadID (tid);
+ break;
+
+ case 'c':
+ SetContinueThreadID (tid);
+ break;
+
+ default:
+ assert (false && "unsupported $H variant - shouldn't get here");
+ return SendIllFormedResponse (packet, "H variant unsupported, should be c or g");
+ }
+
+ return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_I (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ packet.SetFilePos (::strlen("I"));
+ char tmp[4096];
+ for (;;)
+ {
+ size_t read = packet.GetHexBytesAvail(tmp, sizeof(tmp));
+ if (read == 0)
+ {
+ break;
+ }
+ // write directly to stdin *this might block if stdin buffer is full*
+ // TODO: enqueue this block in circular buffer and send window size to remote host
+ ConnectionStatus status;
+ Error error;
+ m_stdio_communication.Write(tmp, read, status, &error);
+ if (error.Fail())
+ {
+ return SendErrorResponse (0x15);
+ }
+ }
+
+ return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_interrupt (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD));
+
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Interrupt the process.
+ Error error = m_debugged_process_sp->Interrupt ();
+ if (error.Fail ())
+ {
+ if (log)
+ {
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed for process %" PRIu64 ": %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ }
+ return SendErrorResponse (GDBRemoteServerError::eErrorResume);
+ }
+
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s stopped process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ());
+
+ // No response required from stop all.
+ return PacketResult::Success;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_m (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out the memory address.
+ packet.SetFilePos (strlen("m"));
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short m packet");
+
+ // Read the address. Punting on validation.
+ // FIXME replace with Hex U64 read with no default value that fails on failed read.
+ const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0);
+
+ // Validate comma.
+ if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ','))
+ return SendIllFormedResponse(packet, "Comma sep missing in m packet");
+
+ // Get # bytes to read.
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Length missing in m packet");
+
+ const uint64_t byte_count = packet.GetHexMaxU64(false, 0);
+ if (byte_count == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s nothing to read: zero-length packet", __FUNCTION__);
+ return PacketResult::Success;
+ }
+
+ // Allocate the response buffer.
+ std::string buf(byte_count, '\0');
+ if (buf.empty())
+ return SendErrorResponse (0x78);
+
+
+ // Retrieve the process memory.
+ lldb::addr_t bytes_read = 0;
+ lldb_private::Error error = m_debugged_process_sp->ReadMemory (read_addr, &buf[0], byte_count, bytes_read);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " mem 0x%" PRIx64 ": failed to read. Error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), read_addr, error.AsCString ());
+ return SendErrorResponse (0x08);
+ }
+
+ if (bytes_read == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " mem 0x%" PRIx64 ": read %" PRIu64 " of %" PRIu64 " requested bytes", __FUNCTION__, m_debugged_process_sp->GetID (), read_addr, bytes_read, byte_count);
+ return SendErrorResponse (0x08);
+ }
+
+ StreamGDBRemote response;
+ for (lldb::addr_t i = 0; i < bytes_read; ++i)
+ response.PutHex8(buf[i]);
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_M (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out the memory address.
+ packet.SetFilePos (strlen("M"));
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short M packet");
+
+ // Read the address. Punting on validation.
+ // FIXME replace with Hex U64 read with no default value that fails on failed read.
+ const lldb::addr_t write_addr = packet.GetHexMaxU64(false, 0);
+
+ // Validate comma.
+ if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ','))
+ return SendIllFormedResponse(packet, "Comma sep missing in M packet");
+
+ // Get # bytes to read.
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Length missing in M packet");
+
+ const uint64_t byte_count = packet.GetHexMaxU64(false, 0);
+ if (byte_count == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s nothing to write: zero-length packet", __FUNCTION__);
+ return PacketResult::Success;
+ }
+
+ // Validate colon.
+ if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ':'))
+ return SendIllFormedResponse(packet, "Comma sep missing in M packet after byte length");
+
+ // Allocate the conversion buffer.
+ std::vector<uint8_t> buf(byte_count, 0);
+ if (buf.empty())
+ return SendErrorResponse (0x78);
+
+ // Convert the hex memory write contents to bytes.
+ StreamGDBRemote response;
+ const uint64_t convert_count = static_cast<uint64_t> (packet.GetHexBytes (&buf[0], byte_count, 0));
+ if (convert_count != byte_count)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " mem 0x%" PRIx64 ": asked to write %" PRIu64 " bytes, but only found %" PRIu64 " to convert.", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, byte_count, convert_count);
+ return SendIllFormedResponse (packet, "M content byte length specified did not match hex-encoded content length");
+ }
+
+ // Write the process memory.
+ lldb::addr_t bytes_written = 0;
+ lldb_private::Error error = m_debugged_process_sp->WriteMemory (write_addr, &buf[0], byte_count, bytes_written);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " mem 0x%" PRIx64 ": failed to write. Error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, error.AsCString ());
+ return SendErrorResponse (0x09);
+ }
+
+ if (bytes_written == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " mem 0x%" PRIx64 ": wrote %" PRIu64 " of %" PRIu64 " requested bytes", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, bytes_written, byte_count);
+ return SendErrorResponse (0x09);
+ }
+
+ return SendOKResponse ();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qMemoryRegionInfoSupported (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // Currently only the NativeProcessProtocol knows if it can handle a qMemoryRegionInfoSupported
+ // request, but we're not guaranteed to be attached to a process. For now we'll assume the
+ // client only asks this when a process is being debugged.
+
+ // Ensure we have a process running; otherwise, we can't figure this out
+ // since we won't have a NativeProcessProtocol.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Test if we can get any region back when asking for the region around NULL.
+ MemoryRegionInfo region_info;
+ const Error error = m_debugged_process_sp->GetMemoryRegionInfo (0, region_info);
+ if (error.Fail ())
+ {
+ // We don't support memory region info collection for this NativeProcessProtocol.
+ return SendUnimplementedResponse ("");
+ }
+
+ return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qMemoryRegionInfo (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // Ensure we have a process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out the memory address.
+ packet.SetFilePos (strlen("qMemoryRegionInfo:"));
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short qMemoryRegionInfo: packet");
+
+ // Read the address. Punting on validation.
+ const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0);
+
+ StreamGDBRemote response;
+
+ // Get the memory region info for the target address.
+ MemoryRegionInfo region_info;
+ const Error error = m_debugged_process_sp->GetMemoryRegionInfo (read_addr, region_info);
+ if (error.Fail ())
+ {
+ // Return the error message.
+
+ response.PutCString ("error:");
+ response.PutCStringAsRawHex8 (error.AsCString ());
+ response.PutChar (';');
+ }
+ else
+ {
+ // Range start and size.
+ response.Printf ("start:%" PRIx64 ";size:%" PRIx64 ";", region_info.GetRange ().GetRangeBase (), region_info.GetRange ().GetByteSize ());
+
+ // Permissions.
+ if (region_info.GetReadable () ||
+ region_info.GetWritable () ||
+ region_info.GetExecutable ())
+ {
+ // Write permissions info.
+ response.PutCString ("permissions:");
+
+ if (region_info.GetReadable ())
+ response.PutChar ('r');
+ if (region_info.GetWritable ())
+ response.PutChar('w');
+ if (region_info.GetExecutable())
+ response.PutChar ('x');
+
+ response.PutChar (';');
+ }
+ }
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_Z (StringExtractorGDBRemote &packet)
+{
+ // Ensure we have a process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out software or hardware breakpoint or watchpoint requested.
+ packet.SetFilePos (strlen("Z"));
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short Z packet, missing software/hardware specifier");
+
+ bool want_breakpoint = true;
+ bool want_hardware = false;
+
+ const GDBStoppointType stoppoint_type =
+ GDBStoppointType(packet.GetS32 (eStoppointInvalid));
+ switch (stoppoint_type)
+ {
+ case eBreakpointSoftware:
+ want_hardware = false; want_breakpoint = true; break;
+ case eBreakpointHardware:
+ want_hardware = true; want_breakpoint = true; break;
+ case eWatchpointWrite:
+ want_hardware = true; want_breakpoint = false; break;
+ case eWatchpointRead:
+ want_hardware = true; want_breakpoint = false; break;
+ case eWatchpointReadWrite:
+ want_hardware = true; want_breakpoint = false; break;
+ case eStoppointInvalid:
+ return SendIllFormedResponse(packet, "Z packet had invalid software/hardware specifier");
+
+ }
+
+ if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',')
+ return SendIllFormedResponse(packet, "Malformed Z packet, expecting comma after stoppoint type");
+
+ // Parse out the stoppoint address.
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short Z packet, missing address");
+ const lldb::addr_t addr = packet.GetHexMaxU64(false, 0);
+
+ if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',')
+ return SendIllFormedResponse(packet, "Malformed Z packet, expecting comma after address");
+
+ // Parse out the stoppoint size (i.e. size hint for opcode size).
+ const uint32_t size = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (size == std::numeric_limits<uint32_t>::max ())
+ return SendIllFormedResponse(packet, "Malformed Z packet, failed to parse size argument");
+
+ if (want_breakpoint)
+ {
+ // Try to set the breakpoint.
+ const Error error = m_debugged_process_sp->SetBreakpoint (addr, size, want_hardware);
+ if (error.Success ())
+ return SendOKResponse ();
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64
+ " failed to set breakpoint: %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ return SendErrorResponse (0x09);
+ }
+ else
+ {
+ uint32_t watch_flags =
+ stoppoint_type == eWatchpointWrite
+ ? watch_flags = 0x1 // Write
+ : watch_flags = 0x3; // ReadWrite
+
+ // Try to set the watchpoint.
+ const Error error = m_debugged_process_sp->SetWatchpoint (
+ addr, size, watch_flags, want_hardware);
+ if (error.Success ())
+ return SendOKResponse ();
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64
+ " failed to set watchpoint: %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ return SendErrorResponse (0x09);
+ }
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_z (StringExtractorGDBRemote &packet)
+{
+ // Ensure we have a process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ // Parse out software or hardware breakpoint or watchpoint requested.
+ packet.SetFilePos (strlen("z"));
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short z packet, missing software/hardware specifier");
+
+ bool want_breakpoint = true;
+
+ const GDBStoppointType stoppoint_type =
+ GDBStoppointType(packet.GetS32 (eStoppointInvalid));
+ switch (stoppoint_type)
+ {
+ case eBreakpointHardware: want_breakpoint = true; break;
+ case eBreakpointSoftware: want_breakpoint = true; break;
+ case eWatchpointWrite: want_breakpoint = false; break;
+ case eWatchpointRead: want_breakpoint = false; break;
+ case eWatchpointReadWrite: want_breakpoint = false; break;
+ default:
+ return SendIllFormedResponse(packet, "z packet had invalid software/hardware specifier");
+
+ }
+
+ if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',')
+ return SendIllFormedResponse(packet, "Malformed z packet, expecting comma after stoppoint type");
+
+ // Parse out the stoppoint address.
+ if (packet.GetBytesLeft() < 1)
+ return SendIllFormedResponse(packet, "Too short z packet, missing address");
+ const lldb::addr_t addr = packet.GetHexMaxU64(false, 0);
+
+ if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',')
+ return SendIllFormedResponse(packet, "Malformed z packet, expecting comma after address");
+
+ /*
+ // Parse out the stoppoint size (i.e. size hint for opcode size).
+ const uint32_t size = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ());
+ if (size == std::numeric_limits<uint32_t>::max ())
+ return SendIllFormedResponse(packet, "Malformed z packet, failed to parse size argument");
+ */
+
+ if (want_breakpoint)
+ {
+ // Try to clear the breakpoint.
+ const Error error = m_debugged_process_sp->RemoveBreakpoint (addr);
+ if (error.Success ())
+ return SendOKResponse ();
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64
+ " failed to remove breakpoint: %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ return SendErrorResponse (0x09);
+ }
+ else
+ {
+ // Try to clear the watchpoint.
+ const Error error = m_debugged_process_sp->RemoveWatchpoint (addr);
+ if (error.Success ())
+ return SendOKResponse ();
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64
+ " failed to remove watchpoint: %s",
+ __FUNCTION__,
+ m_debugged_process_sp->GetID (),
+ error.AsCString ());
+ return SendErrorResponse (0x09);
+ }
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_s (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD));
+
+ // Ensure we have a process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x32);
+ }
+
+ // We first try to use a continue thread id. If any one or any all set, use the current thread.
+ // Bail out if we don't have a thread id.
+ lldb::tid_t tid = GetContinueThreadID ();
+ if (tid == 0 || tid == LLDB_INVALID_THREAD_ID)
+ tid = GetCurrentThreadID ();
+ if (tid == LLDB_INVALID_THREAD_ID)
+ return SendErrorResponse (0x33);
+
+ // Double check that we have such a thread.
+ // TODO investigate: on MacOSX we might need to do an UpdateThreads () here.
+ NativeThreadProtocolSP thread_sp = m_debugged_process_sp->GetThreadByID (tid);
+ if (!thread_sp || thread_sp->GetID () != tid)
+ return SendErrorResponse (0x33);
+
+ // Create the step action for the given thread.
+ lldb_private::ResumeAction action = { tid, eStateStepping, 0 };
+
+ // Setup the actions list.
+ lldb_private::ResumeActionList actions;
+ actions.Append (action);
+
+ // All other threads stop while we're single stepping a thread.
+ actions.SetDefaultThreadActionIfNeeded(eStateStopped, 0);
+ Error error = m_debugged_process_sp->Resume (actions);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " Resume() failed with error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), tid, error.AsCString ());
+ return SendErrorResponse(0x49);
+ }
+
+ // No response here - the stop or exit will come from the resulting action.
+ return PacketResult::Success;
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qXfer_auxv_read (StringExtractorGDBRemote &packet)
+{
+ // *BSD impls should be able to do this too.
+#if defined(__linux__)
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // Parse out the offset.
+ packet.SetFilePos (strlen("qXfer:auxv:read::"));
+ if (packet.GetBytesLeft () < 1)
+ return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing offset");
+
+ const uint64_t auxv_offset = packet.GetHexMaxU64 (false, std::numeric_limits<uint64_t>::max ());
+ if (auxv_offset == std::numeric_limits<uint64_t>::max ())
+ return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing offset");
+
+ // Parse out comma.
+ if (packet.GetBytesLeft () < 1 || packet.GetChar () != ',')
+ return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing comma after offset");
+
+ // Parse out the length.
+ const uint64_t auxv_length = packet.GetHexMaxU64 (false, std::numeric_limits<uint64_t>::max ());
+ if (auxv_length == std::numeric_limits<uint64_t>::max ())
+ return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing length");
+
+ // Grab the auxv data if we need it.
+ if (!m_active_auxv_buffer_sp)
+ {
+ // Make sure we have a valid process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x10);
+ }
+
+ // Grab the auxv data.
+ m_active_auxv_buffer_sp = Host::GetAuxvData (m_debugged_process_sp->GetID ());
+ if (!m_active_auxv_buffer_sp || m_active_auxv_buffer_sp->GetByteSize () == 0)
+ {
+ // Hmm, no auxv data, call that an error.
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no auxv data retrieved", __FUNCTION__);
+ m_active_auxv_buffer_sp.reset ();
+ return SendErrorResponse (0x11);
+ }
+ }
+
+ // FIXME find out if/how I lock the stream here.
+
+ StreamGDBRemote response;
+ bool done_with_buffer = false;
+
+ if (auxv_offset >= m_active_auxv_buffer_sp->GetByteSize ())
+ {
+ // We have nothing left to send. Mark the buffer as complete.
+ response.PutChar ('l');
+ done_with_buffer = true;
+ }
+ else
+ {
+ // Figure out how many bytes are available starting at the given offset.
+ const uint64_t bytes_remaining = m_active_auxv_buffer_sp->GetByteSize () - auxv_offset;
+
+ // Figure out how many bytes we're going to read.
+ const uint64_t bytes_to_read = (auxv_length > bytes_remaining) ? bytes_remaining : auxv_length;
+
+ // Mark the response type according to whether we're reading the remainder of the auxv data.
+ if (bytes_to_read >= bytes_remaining)
+ {
+ // There will be nothing left to read after this
+ response.PutChar ('l');
+ done_with_buffer = true;
+ }
+ else
+ {
+ // There will still be bytes to read after this request.
+ response.PutChar ('m');
+ }
+
+ // Now write the data in encoded binary form.
+ response.PutEscapedBytes (m_active_auxv_buffer_sp->GetBytes () + auxv_offset, bytes_to_read);
+ }
+
+ if (done_with_buffer)
+ m_active_auxv_buffer_sp.reset ();
+
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+#else
+ return SendUnimplementedResponse ("not implemented on this platform");
+#endif
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_QSaveRegisterState (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Move past packet name.
+ packet.SetFilePos (strlen ("QSaveRegisterState"));
+
+ // Get the thread to use.
+ NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet);
+ if (!thread_sp)
+ {
+ if (m_thread_suffix_supported)
+ return SendIllFormedResponse (packet, "No thread specified in QSaveRegisterState packet");
+ else
+ return SendIllFormedResponse (packet, "No thread was is set with the Hg packet");
+ }
+
+ // Grab the register context for the thread.
+ NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ());
+ if (!reg_context_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ());
+ return SendErrorResponse (0x15);
+ }
+
+ // Save registers to a buffer.
+ DataBufferSP register_data_sp;
+ Error error = reg_context_sp->ReadAllRegisterValues (register_data_sp);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " failed to save all register values: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ());
+ return SendErrorResponse (0x75);
+ }
+
+ // Allocate a new save id.
+ const uint32_t save_id = GetNextSavedRegistersID ();
+ assert ((m_saved_registers_map.find (save_id) == m_saved_registers_map.end ()) && "GetNextRegisterSaveID() returned an existing register save id");
+
+ // Save the register data buffer under the save id.
+ {
+ Mutex::Locker locker (m_saved_registers_mutex);
+ m_saved_registers_map[save_id] = register_data_sp;
+ }
+
+ // Write the response.
+ StreamGDBRemote response;
+ response.Printf ("%" PRIu32, save_id);
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_QRestoreRegisterState (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Parse out save id.
+ packet.SetFilePos (strlen ("QRestoreRegisterState:"));
+ if (packet.GetBytesLeft () < 1)
+ return SendIllFormedResponse (packet, "QRestoreRegisterState packet missing register save id");
+
+ const uint32_t save_id = packet.GetU32 (0);
+ if (save_id == 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s QRestoreRegisterState packet has malformed save id, expecting decimal uint32_t", __FUNCTION__);
+ return SendErrorResponse (0x76);
+ }
+
+ // Get the thread to use.
+ NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet);
+ if (!thread_sp)
+ {
+ if (m_thread_suffix_supported)
+ return SendIllFormedResponse (packet, "No thread specified in QRestoreRegisterState packet");
+ else
+ return SendIllFormedResponse (packet, "No thread was is set with the Hg packet");
+ }
+
+ // Grab the register context for the thread.
+ NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ());
+ if (!reg_context_sp)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ());
+ return SendErrorResponse (0x15);
+ }
+
+ // Retrieve register state buffer, then remove from the list.
+ DataBufferSP register_data_sp;
+ {
+ Mutex::Locker locker (m_saved_registers_mutex);
+
+ // Find the register set buffer for the given save id.
+ auto it = m_saved_registers_map.find (save_id);
+ if (it == m_saved_registers_map.end ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " does not have a register set save buffer for id %" PRIu32, __FUNCTION__, m_debugged_process_sp->GetID (), save_id);
+ return SendErrorResponse (0x77);
+ }
+ register_data_sp = it->second;
+
+ // Remove it from the map.
+ m_saved_registers_map.erase (it);
+ }
+
+ Error error = reg_context_sp->WriteAllRegisterValues (register_data_sp);
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s pid %" PRIu64 " failed to restore all register values: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ());
+ return SendErrorResponse (0x77);
+ }
+
+ return SendOKResponse();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_vAttach (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // Consume the ';' after vAttach.
+ packet.SetFilePos (strlen ("vAttach"));
+ if (!packet.GetBytesLeft () || packet.GetChar () != ';')
+ return SendIllFormedResponse (packet, "vAttach missing expected ';'");
+
+ // Grab the PID to which we will attach (assume hex encoding).
+ lldb::pid_t pid = packet.GetU32 (LLDB_INVALID_PROCESS_ID, 16);
+ if (pid == LLDB_INVALID_PROCESS_ID)
+ return SendIllFormedResponse (packet, "vAttach failed to parse the process id");
+
+ // Attempt to attach.
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s attempting to attach to pid %" PRIu64, __FUNCTION__, pid);
+
+ Error error = AttachToProcess (pid);
+
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to attach to pid %" PRIu64 ": %s\n", __FUNCTION__, pid, error.AsCString());
+ return SendErrorResponse (0x01);
+ }
+
+ // Notify we attached by sending a stop packet.
+ return SendStopReasonForState (m_debugged_process_sp->GetState (), true);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_D (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS));
+
+ // Scope for mutex locker.
+ Mutex::Locker locker (m_spawned_pids_mutex);
+
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID))
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, no process available", __FUNCTION__);
+ return SendErrorResponse (0x15);
+ }
+
+ if (m_spawned_pids.find(m_debugged_process_sp->GetID ()) == m_spawned_pids.end())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to find PID %" PRIu64 " in spawned pids list",
+ __FUNCTION__, m_debugged_process_sp->GetID ());
+ return SendErrorResponse (0x1);
+ }
+
+ lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
+
+ // Consume the ';' after D.
+ packet.SetFilePos (1);
+ if (packet.GetBytesLeft ())
+ {
+ if (packet.GetChar () != ';')
+ return SendIllFormedResponse (packet, "D missing expected ';'");
+
+ // Grab the PID from which we will detach (assume hex encoding).
+ pid = packet.GetU32 (LLDB_INVALID_PROCESS_ID, 16);
+ if (pid == LLDB_INVALID_PROCESS_ID)
+ return SendIllFormedResponse (packet, "D failed to parse the process id");
+ }
+
+ if (pid != LLDB_INVALID_PROCESS_ID &&
+ m_debugged_process_sp->GetID () != pid)
+ {
+ return SendIllFormedResponse (packet, "Invalid pid");
+ }
+
+ if (m_stdio_communication.IsConnected ())
+ {
+ m_stdio_communication.StopReadThread ();
+ }
+
+ const Error error = m_debugged_process_sp->Detach ();
+ if (error.Fail ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed to detach from pid %" PRIu64 ": %s\n",
+ __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ());
+ return SendErrorResponse (0x01);
+ }
+
+ m_spawned_pids.erase (m_debugged_process_sp->GetID ());
+ return SendOKResponse ();
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qThreadStopInfo (StringExtractorGDBRemote &packet)
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ packet.SetFilePos (strlen("qThreadStopInfo"));
+ const lldb::tid_t tid = packet.GetHexMaxU32 (false, LLDB_INVALID_THREAD_ID);
+ if (tid == LLDB_INVALID_THREAD_ID)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s failed, could not parse thread id from request \"%s\"", __FUNCTION__, packet.GetStringRef ().c_str ());
+ return SendErrorResponse (0x15);
+ }
+ return SendStopReplyPacketForThread (tid);
+}
+
+GDBRemoteCommunication::PacketResult
+GDBRemoteCommunicationServerLLGS::Handle_qWatchpointSupportInfo (StringExtractorGDBRemote &packet)
+{
+ // Fail if we don't have a current process.
+ if (!m_debugged_process_sp ||
+ m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)
+ return SendErrorResponse (68);
+
+ packet.SetFilePos(strlen("qWatchpointSupportInfo"));
+ if (packet.GetBytesLeft() == 0)
+ return SendOKResponse();
+ if (packet.GetChar() != ':')
+ return SendErrorResponse(67);
+
+ uint32_t num = m_debugged_process_sp->GetMaxWatchpoints();
+ StreamGDBRemote response;
+ response.Printf ("num:%d;", num);
+ return SendPacketNoLock(response.GetData(), response.GetSize());
+}
+
+void
+GDBRemoteCommunicationServerLLGS::FlushInferiorOutput ()
+{
+ // If we're not monitoring an inferior's terminal, ignore this.
+ if (!m_stdio_communication.IsConnected())
+ return;
+
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s() called", __FUNCTION__);
+
+ // FIXME implement a timeout on the join.
+ m_stdio_communication.JoinReadThread();
+}
+
+void
+GDBRemoteCommunicationServerLLGS::MaybeCloseInferiorTerminalConnection ()
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
+
+ // Tell the stdio connection to shut down.
+ if (m_stdio_communication.IsConnected())
+ {
+ auto connection = m_stdio_communication.GetConnection();
+ if (connection)
+ {
+ Error error;
+ connection->Disconnect (&error);
+
+ if (error.Success ())
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s disconnect process terminal stdio - SUCCESS", __FUNCTION__);
+ }
+ else
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s disconnect process terminal stdio - FAIL: %s", __FUNCTION__, error.AsCString ());
+ }
+ }
+ }
+}
+
+
+lldb_private::NativeThreadProtocolSP
+GDBRemoteCommunicationServerLLGS::GetThreadFromSuffix (StringExtractorGDBRemote &packet)
+{
+ NativeThreadProtocolSP thread_sp;
+
+ // We have no thread if we don't have a process.
+ if (!m_debugged_process_sp || m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)
+ return thread_sp;
+
+ // If the client hasn't asked for thread suffix support, there will not be a thread suffix.
+ // Use the current thread in that case.
+ if (!m_thread_suffix_supported)
+ {
+ const lldb::tid_t current_tid = GetCurrentThreadID ();
+ if (current_tid == LLDB_INVALID_THREAD_ID)
+ return thread_sp;
+ else if (current_tid == 0)
+ {
+ // Pick a thread.
+ return m_debugged_process_sp->GetThreadAtIndex (0);
+ }
+ else
+ return m_debugged_process_sp->GetThreadByID (current_tid);
+ }
+
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD));
+
+ // Parse out the ';'.
+ if (packet.GetBytesLeft () < 1 || packet.GetChar () != ';')
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s gdb-remote parse error: expected ';' prior to start of thread suffix: packet contents = '%s'", __FUNCTION__, packet.GetStringRef ().c_str ());
+ return thread_sp;
+ }
+
+ if (!packet.GetBytesLeft ())
+ return thread_sp;
+
+ // Parse out thread: portion.
+ if (strncmp (packet.Peek (), "thread:", strlen("thread:")) != 0)
+ {
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s gdb-remote parse error: expected 'thread:' but not found, packet contents = '%s'", __FUNCTION__, packet.GetStringRef ().c_str ());
+ return thread_sp;
+ }
+ packet.SetFilePos (packet.GetFilePos () + strlen("thread:"));
+ const lldb::tid_t tid = packet.GetHexMaxU64(false, 0);
+ if (tid != 0)
+ return m_debugged_process_sp->GetThreadByID (tid);
+
+ return thread_sp;
+}
+
+lldb::tid_t
+GDBRemoteCommunicationServerLLGS::GetCurrentThreadID () const
+{
+ if (m_current_tid == 0 || m_current_tid == LLDB_INVALID_THREAD_ID)
+ {
+ // Use whatever the debug process says is the current thread id
+ // since the protocol either didn't specify or specified we want
+ // any/all threads marked as the current thread.
+ if (!m_debugged_process_sp)
+ return LLDB_INVALID_THREAD_ID;
+ return m_debugged_process_sp->GetCurrentThreadID ();
+ }
+ // Use the specific current thread id set by the gdb remote protocol.
+ return m_current_tid;
+}
+
+uint32_t
+GDBRemoteCommunicationServerLLGS::GetNextSavedRegistersID ()
+{
+ Mutex::Locker locker (m_saved_registers_mutex);
+ return m_next_saved_registers_id++;
+}
+
+void
+GDBRemoteCommunicationServerLLGS::ClearProcessSpecificData ()
+{
+ Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|GDBR_LOG_PROCESS));
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s()", __FUNCTION__);
+
+ // Clear any auxv cached data.
+ // *BSD impls should be able to do this too.
+#if defined(__linux__)
+ if (log)
+ log->Printf ("GDBRemoteCommunicationServerLLGS::%s clearing auxv buffer (previously %s)",
+ __FUNCTION__,
+ m_active_auxv_buffer_sp ? "was set" : "was not set");
+ m_active_auxv_buffer_sp.reset ();
+#endif
+}