| //===-- GDBRemoteCommunicationClient.cpp ------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| #include "GDBRemoteCommunicationClient.h" |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| #include "llvm/ADT/Triple.h" |
| #include "lldb/Interpreter/Args.h" |
| #include "lldb/Core/ConnectionFileDescriptor.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Host/Endian.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/TimeValue.h" |
| |
| // Project includes |
| #include "Utility/StringExtractorGDBRemote.h" |
| #include "ProcessGDBRemote.h" |
| #include "ProcessGDBRemoteLog.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // GDBRemoteCommunicationClient constructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::GDBRemoteCommunicationClient() : |
| GDBRemoteCommunication("gdb-remote.client", "gdb-remote.client.rx_packet"), |
| m_supports_not_sending_acks (eLazyBoolCalculate), |
| m_supports_thread_suffix (eLazyBoolCalculate), |
| m_supports_vCont_all (eLazyBoolCalculate), |
| m_supports_vCont_any (eLazyBoolCalculate), |
| m_supports_vCont_c (eLazyBoolCalculate), |
| m_supports_vCont_C (eLazyBoolCalculate), |
| m_supports_vCont_s (eLazyBoolCalculate), |
| m_supports_vCont_S (eLazyBoolCalculate), |
| m_qHostInfo_is_valid (eLazyBoolCalculate), |
| m_supports_qProcessInfoPID (true), |
| m_supports_qfProcessInfo (true), |
| m_supports_qUserName (true), |
| m_supports_qGroupName (true), |
| m_async_mutex (Mutex::eMutexTypeRecursive), |
| m_async_packet_predicate (false), |
| m_async_packet (), |
| m_async_response (), |
| m_async_signal (-1), |
| m_host_arch(), |
| m_os_version_major (UINT32_MAX), |
| m_os_version_minor (UINT32_MAX), |
| m_os_version_update (UINT32_MAX) |
| { |
| m_rx_packet_listener.StartListeningForEvents(this, |
| Communication::eBroadcastBitPacketAvailable | |
| Communication::eBroadcastBitReadThreadDidExit); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::~GDBRemoteCommunicationClient() |
| { |
| m_rx_packet_listener.StopListeningForEvents(this, |
| Communication::eBroadcastBitPacketAvailable | |
| Communication::eBroadcastBitReadThreadDidExit); |
| if (IsConnected()) |
| { |
| StopReadThread(); |
| Disconnect(); |
| } |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::HandshakeWithServer (Error *error_ptr) |
| { |
| // Start the read thread after we send the handshake ack since if we |
| // fail to send the handshake ack, there is no reason to continue... |
| if (SendAck()) |
| return StartReadThread (error_ptr); |
| |
| if (error_ptr) |
| error_ptr->SetErrorString("failed to send the handshake ack"); |
| return false; |
| } |
| |
| void |
| GDBRemoteCommunicationClient::QueryNoAckModeSupported () |
| { |
| if (m_supports_not_sending_acks == eLazyBoolCalculate) |
| { |
| m_send_acks = true; |
| m_supports_not_sending_acks = eLazyBoolNo; |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("QStartNoAckMode", response, false)) |
| { |
| if (response.IsOKResponse()) |
| { |
| m_send_acks = false; |
| m_supports_not_sending_acks = eLazyBoolYes; |
| } |
| } |
| } |
| } |
| |
| void |
| GDBRemoteCommunicationClient::ResetDiscoverableSettings() |
| { |
| m_supports_not_sending_acks = eLazyBoolCalculate; |
| m_supports_thread_suffix = eLazyBoolCalculate; |
| m_supports_vCont_c = eLazyBoolCalculate; |
| m_supports_vCont_C = eLazyBoolCalculate; |
| m_supports_vCont_s = eLazyBoolCalculate; |
| m_supports_vCont_S = eLazyBoolCalculate; |
| m_qHostInfo_is_valid = eLazyBoolCalculate; |
| m_supports_qProcessInfoPID = true; |
| m_supports_qfProcessInfo = true; |
| m_supports_qUserName = true; |
| m_supports_qGroupName = true; |
| m_host_arch.Clear(); |
| } |
| |
| |
| bool |
| GDBRemoteCommunicationClient::GetThreadSuffixSupported () |
| { |
| if (m_supports_thread_suffix == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_thread_suffix = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("QThreadSuffixSupported", response, false)) |
| { |
| if (response.IsOKResponse()) |
| m_supports_thread_suffix = eLazyBoolYes; |
| } |
| } |
| return m_supports_thread_suffix; |
| } |
| bool |
| GDBRemoteCommunicationClient::GetVContSupported (char flavor) |
| { |
| if (m_supports_vCont_c == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_vCont_any = eLazyBoolNo; |
| m_supports_vCont_all = eLazyBoolNo; |
| m_supports_vCont_c = eLazyBoolNo; |
| m_supports_vCont_C = eLazyBoolNo; |
| m_supports_vCont_s = eLazyBoolNo; |
| m_supports_vCont_S = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("vCont?", response, false)) |
| { |
| const char *response_cstr = response.GetStringRef().c_str(); |
| if (::strstr (response_cstr, ";c")) |
| m_supports_vCont_c = eLazyBoolYes; |
| |
| if (::strstr (response_cstr, ";C")) |
| m_supports_vCont_C = eLazyBoolYes; |
| |
| if (::strstr (response_cstr, ";s")) |
| m_supports_vCont_s = eLazyBoolYes; |
| |
| if (::strstr (response_cstr, ";S")) |
| m_supports_vCont_S = eLazyBoolYes; |
| |
| if (m_supports_vCont_c == eLazyBoolYes && |
| m_supports_vCont_C == eLazyBoolYes && |
| m_supports_vCont_s == eLazyBoolYes && |
| m_supports_vCont_S == eLazyBoolYes) |
| { |
| m_supports_vCont_all = eLazyBoolYes; |
| } |
| |
| if (m_supports_vCont_c == eLazyBoolYes || |
| m_supports_vCont_C == eLazyBoolYes || |
| m_supports_vCont_s == eLazyBoolYes || |
| m_supports_vCont_S == eLazyBoolYes) |
| { |
| m_supports_vCont_any = eLazyBoolYes; |
| } |
| } |
| } |
| |
| switch (flavor) |
| { |
| case 'a': return m_supports_vCont_any; |
| case 'A': return m_supports_vCont_all; |
| case 'c': return m_supports_vCont_c; |
| case 'C': return m_supports_vCont_C; |
| case 's': return m_supports_vCont_s; |
| case 'S': return m_supports_vCont_S; |
| default: break; |
| } |
| return false; |
| } |
| |
| |
| size_t |
| GDBRemoteCommunicationClient::SendPacketAndWaitForResponse |
| ( |
| const char *payload, |
| StringExtractorGDBRemote &response, |
| bool send_async |
| ) |
| { |
| return SendPacketAndWaitForResponse (payload, |
| ::strlen (payload), |
| response, |
| send_async); |
| } |
| |
| size_t |
| GDBRemoteCommunicationClient::SendPacketAndWaitForResponse |
| ( |
| const char *payload, |
| size_t payload_length, |
| StringExtractorGDBRemote &response, |
| bool send_async |
| ) |
| { |
| Mutex::Locker locker; |
| TimeValue timeout_time; |
| timeout_time = TimeValue::Now(); |
| timeout_time.OffsetWithSeconds (m_packet_timeout); |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| |
| if (GetSequenceMutex (locker)) |
| { |
| if (SendPacketNoLock (payload, strlen(payload))) |
| return WaitForPacketNoLock (response, &timeout_time); |
| } |
| else |
| { |
| if (send_async) |
| { |
| Mutex::Locker async_locker (m_async_mutex); |
| m_async_packet.assign(payload, payload_length); |
| m_async_packet_predicate.SetValue (true, eBroadcastNever); |
| |
| if (log) |
| log->Printf ("async: async packet = %s", m_async_packet.c_str()); |
| |
| bool timed_out = false; |
| bool sent_interrupt = false; |
| if (SendInterrupt(locker, 2, sent_interrupt, timed_out)) |
| { |
| if (sent_interrupt) |
| { |
| if (log) |
| log->Printf ("async: sent interrupt"); |
| if (m_async_packet_predicate.WaitForValueEqualTo (false, &timeout_time, &timed_out)) |
| { |
| if (log) |
| log->Printf ("async: got response"); |
| response = m_async_response; |
| return response.GetStringRef().size(); |
| } |
| else |
| { |
| if (log) |
| log->Printf ("async: timed out waiting for response"); |
| } |
| |
| // Make sure we wait until the continue packet has been sent again... |
| if (m_private_is_running.WaitForValueEqualTo (true, &timeout_time, &timed_out)) |
| { |
| if (log) |
| log->Printf ("async: timed out waiting for process to resume"); |
| } |
| } |
| else |
| { |
| // We had a racy condition where we went to send the interrupt |
| // yet we were able to get the loc |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("async: failed to interrupt"); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("mutex taken and send_async == false, aborting packet"); |
| } |
| } |
| return 0; |
| } |
| |
| //template<typename _Tp> |
| //class ScopedValueChanger |
| //{ |
| //public: |
| // // Take a value reference and the value to assign it to when this class |
| // // instance goes out of scope. |
| // ScopedValueChanger (_Tp &value_ref, _Tp value) : |
| // m_value_ref (value_ref), |
| // m_value (value) |
| // { |
| // } |
| // |
| // // This object is going out of scope, change the value pointed to by |
| // // m_value_ref to the value we got during construction which was stored in |
| // // m_value; |
| // ~ScopedValueChanger () |
| // { |
| // m_value_ref = m_value; |
| // } |
| //protected: |
| // _Tp &m_value_ref; // A reference to the value we will change when this object destructs |
| // _Tp m_value; // The value to assign to m_value_ref when this goes out of scope. |
| //}; |
| |
| StateType |
| GDBRemoteCommunicationClient::SendContinuePacketAndWaitForResponse |
| ( |
| ProcessGDBRemote *process, |
| const char *payload, |
| size_t packet_length, |
| StringExtractorGDBRemote &response |
| ) |
| { |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s ()", __FUNCTION__); |
| |
| Mutex::Locker locker(m_sequence_mutex); |
| StateType state = eStateRunning; |
| |
| BroadcastEvent(eBroadcastBitRunPacketSent, NULL); |
| m_public_is_running.SetValue (true, eBroadcastNever); |
| // Set the starting continue packet into "continue_packet". This packet |
| // make change if we are interrupted and we continue after an async packet... |
| std::string continue_packet(payload, packet_length); |
| |
| while (state == eStateRunning) |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () sending continue packet: %s", __FUNCTION__, continue_packet.c_str()); |
| if (SendPacket(continue_packet.c_str(), continue_packet.size()) == 0) |
| state = eStateInvalid; |
| |
| m_private_is_running.SetValue (true, eBroadcastNever); |
| |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () WaitForPacket(%.*s)", __FUNCTION__); |
| |
| if (WaitForPacket (response, (TimeValue*)NULL)) |
| { |
| if (response.Empty()) |
| state = eStateInvalid; |
| else |
| { |
| const char stop_type = response.GetChar(); |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () got packet: %s", __FUNCTION__, response.GetStringRef().c_str()); |
| switch (stop_type) |
| { |
| case 'T': |
| case 'S': |
| if (process->GetStopID() == 0) |
| { |
| if (process->GetID() == LLDB_INVALID_PROCESS_ID) |
| { |
| lldb::pid_t pid = GetCurrentProcessID (); |
| if (pid != LLDB_INVALID_PROCESS_ID) |
| process->SetID (pid); |
| } |
| process->BuildDynamicRegisterInfo (true); |
| } |
| |
| // Privately notify any internal threads that we have stopped |
| // in case we wanted to interrupt our process, yet we might |
| // send a packet and continue without returning control to the |
| // user. |
| m_private_is_running.SetValue (false, eBroadcastAlways); |
| if (m_async_signal != -1) |
| { |
| if (log) |
| log->Printf ("async: send signo = %s", Host::GetSignalAsCString (m_async_signal)); |
| |
| // Save off the async signal we are supposed to send |
| const int async_signal = m_async_signal; |
| // Clear the async signal member so we don't end up |
| // sending the signal multiple times... |
| m_async_signal = -1; |
| // Check which signal we stopped with |
| uint8_t signo = response.GetHexU8(255); |
| if (signo == async_signal) |
| { |
| if (log) |
| log->Printf ("async: stopped with signal %s, we are done running", Host::GetSignalAsCString (signo)); |
| |
| // We already stopped with a signal that we wanted |
| // to stop with, so we are done |
| response.SetFilePos (0); |
| } |
| else |
| { |
| // We stopped with a different signal that the one |
| // we wanted to stop with, so now we must resume |
| // with the signal we want |
| char signal_packet[32]; |
| int signal_packet_len = 0; |
| signal_packet_len = ::snprintf (signal_packet, |
| sizeof (signal_packet), |
| "C%2.2x", |
| async_signal); |
| |
| if (log) |
| log->Printf ("async: stopped with signal %s, resume with %s", |
| Host::GetSignalAsCString (signo), |
| Host::GetSignalAsCString (async_signal)); |
| |
| // Set the continue packet to resume... |
| continue_packet.assign(signal_packet, signal_packet_len); |
| continue; |
| } |
| } |
| else if (m_async_packet_predicate.GetValue()) |
| { |
| // We are supposed to send an asynchronous packet while |
| // we are running. |
| m_async_response.Clear(); |
| if (m_async_packet.empty()) |
| { |
| if (log) |
| log->Printf ("async: error: empty async packet"); |
| |
| } |
| else |
| { |
| if (log) |
| log->Printf ("async: sending packet: %s", |
| m_async_packet.c_str()); |
| |
| SendPacketAndWaitForResponse (&m_async_packet[0], |
| m_async_packet.size(), |
| m_async_response, |
| false); |
| } |
| // Let the other thread that was trying to send the async |
| // packet know that the packet has been sent and response is |
| // ready... |
| m_async_packet_predicate.SetValue(false, eBroadcastAlways); |
| |
| // Set the continue packet to resume... |
| continue_packet.assign (1, 'c'); |
| continue; |
| } |
| // Stop with signal and thread info |
| state = eStateStopped; |
| break; |
| |
| case 'W': |
| case 'X': |
| // process exited |
| state = eStateExited; |
| break; |
| |
| case 'O': |
| // STDOUT |
| { |
| std::string inferior_stdout; |
| inferior_stdout.reserve(response.GetBytesLeft () / 2); |
| char ch; |
| while ((ch = response.GetHexU8()) != '\0') |
| inferior_stdout.append(1, ch); |
| process->AppendSTDOUT (inferior_stdout.c_str(), inferior_stdout.size()); |
| } |
| break; |
| |
| case 'E': |
| // ERROR |
| state = eStateInvalid; |
| break; |
| |
| default: |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () unrecognized async packet", __FUNCTION__); |
| state = eStateInvalid; |
| break; |
| } |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () WaitForPacket(...) => false", __FUNCTION__); |
| state = eStateInvalid; |
| } |
| } |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () => %s", __FUNCTION__, StateAsCString(state)); |
| response.SetFilePos(0); |
| m_private_is_running.SetValue (false, eBroadcastAlways); |
| m_public_is_running.SetValue (false, eBroadcastAlways); |
| return state; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::SendAsyncSignal (int signo) |
| { |
| m_async_signal = signo; |
| bool timed_out = false; |
| bool sent_interrupt = false; |
| Mutex::Locker locker; |
| if (SendInterrupt (locker, 1, sent_interrupt, timed_out)) |
| return true; |
| m_async_signal = -1; |
| return false; |
| } |
| |
| // This function takes a mutex locker as a parameter in case the GetSequenceMutex |
| // actually succeeds. If it doesn't succeed in acquiring the sequence mutex |
| // (the expected result), then it will send the halt packet. If it does succeed |
| // then the caller that requested the interrupt will want to keep the sequence |
| // locked down so that no one else can send packets while the caller has control. |
| // This function usually gets called when we are running and need to stop the |
| // target. It can also be used when we are running and and we need to do something |
| // else (like read/write memory), so we need to interrupt the running process |
| // (gdb remote protocol requires this), and do what we need to do, then resume. |
| |
| bool |
| GDBRemoteCommunicationClient::SendInterrupt |
| ( |
| Mutex::Locker& locker, |
| uint32_t seconds_to_wait_for_stop, |
| bool &sent_interrupt, |
| bool &timed_out |
| ) |
| { |
| sent_interrupt = false; |
| timed_out = false; |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| |
| if (IsRunning()) |
| { |
| // Only send an interrupt if our debugserver is running... |
| if (GetSequenceMutex (locker) == false) |
| { |
| // Someone has the mutex locked waiting for a response or for the |
| // inferior to stop, so send the interrupt on the down low... |
| char ctrl_c = '\x03'; |
| ConnectionStatus status = eConnectionStatusSuccess; |
| TimeValue timeout; |
| if (seconds_to_wait_for_stop) |
| { |
| timeout = TimeValue::Now(); |
| timeout.OffsetWithSeconds (seconds_to_wait_for_stop); |
| } |
| size_t bytes_written = Write (&ctrl_c, 1, status, NULL); |
| ProcessGDBRemoteLog::LogIf (GDBR_LOG_PACKETS | GDBR_LOG_PROCESS, "send packet: \\x03"); |
| if (bytes_written > 0) |
| { |
| sent_interrupt = true; |
| if (seconds_to_wait_for_stop) |
| { |
| if (m_private_is_running.WaitForValueEqualTo (false, &timeout, &timed_out)) |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () - sent interrupt, private state stopped", __FUNCTION__); |
| return true; |
| } |
| else |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () - sent interrupt, timed out wating for async thread resume", __FUNCTION__); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () - sent interrupt, not waiting for stop...", __FUNCTION__); |
| return true; |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () - failed to write interrupt", __FUNCTION__); |
| } |
| return false; |
| } |
| else |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () - got sequence mutex without having to interrupt", __FUNCTION__); |
| } |
| } |
| return true; |
| } |
| |
| lldb::pid_t |
| GDBRemoteCommunicationClient::GetCurrentProcessID () |
| { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qC", strlen("qC"), response, false)) |
| { |
| if (response.GetChar() == 'Q') |
| if (response.GetChar() == 'C') |
| return response.GetHexMaxU32 (false, LLDB_INVALID_PROCESS_ID); |
| } |
| return LLDB_INVALID_PROCESS_ID; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetLaunchSuccess (std::string &error_str) |
| { |
| error_str.clear(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qLaunchSuccess", strlen("qLaunchSuccess"), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return true; |
| if (response.GetChar() == 'E') |
| { |
| // A string the describes what failed when launching... |
| error_str = response.GetStringRef().substr(1); |
| } |
| else |
| { |
| error_str.assign ("unknown error occurred launching process"); |
| } |
| } |
| else |
| { |
| error_str.assign ("failed to send the qLaunchSuccess packet"); |
| } |
| return false; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SendArgumentsPacket (char const *argv[]) |
| { |
| if (argv && argv[0]) |
| { |
| StreamString packet; |
| packet.PutChar('A'); |
| const char *arg; |
| for (uint32_t i = 0; (arg = argv[i]) != NULL; ++i) |
| { |
| const int arg_len = strlen(arg); |
| if (i > 0) |
| packet.PutChar(','); |
| packet.Printf("%i,%i,", arg_len * 2, i); |
| packet.PutBytesAsRawHex8 (arg, arg_len); |
| } |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SendEnvironmentPacket (char const *name_equal_value) |
| { |
| if (name_equal_value && name_equal_value[0]) |
| { |
| StreamString packet; |
| packet.Printf("QEnvironment:%s", name_equal_value); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetOSVersion (uint32_t &major, |
| uint32_t &minor, |
| uint32_t &update) |
| { |
| if (GetHostInfo ()) |
| { |
| if (m_os_version_major != UINT32_MAX) |
| { |
| major = m_os_version_major; |
| minor = m_os_version_minor; |
| update = m_os_version_update; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetOSBuildString (std::string &s) |
| { |
| if (GetHostInfo ()) |
| { |
| if (!m_os_build.empty()) |
| { |
| s = m_os_build; |
| return true; |
| } |
| } |
| s.clear(); |
| return false; |
| } |
| |
| |
| bool |
| GDBRemoteCommunicationClient::GetOSKernelDescription (std::string &s) |
| { |
| if (GetHostInfo ()) |
| { |
| if (!m_os_kernel.empty()) |
| { |
| s = m_os_kernel; |
| return true; |
| } |
| } |
| s.clear(); |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetHostname (std::string &s) |
| { |
| if (GetHostInfo ()) |
| { |
| if (!m_hostname.empty()) |
| { |
| s = m_hostname; |
| return true; |
| } |
| } |
| s.clear(); |
| return false; |
| } |
| |
| ArchSpec |
| GDBRemoteCommunicationClient::GetSystemArchitecture () |
| { |
| if (GetHostInfo ()) |
| return m_host_arch; |
| return ArchSpec(); |
| } |
| |
| |
| bool |
| GDBRemoteCommunicationClient::GetHostInfo () |
| { |
| if (m_qHostInfo_is_valid == eLazyBoolCalculate) |
| { |
| m_qHostInfo_is_valid = eLazyBoolNo; |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse ("qHostInfo", response, false)) |
| { |
| if (response.IsUnsupportedResponse()) |
| { |
| return false; |
| } |
| else if (response.IsNormalResponse()) |
| { |
| std::string name; |
| std::string value; |
| uint32_t cpu = LLDB_INVALID_CPUTYPE; |
| uint32_t sub = 0; |
| std::string arch_name; |
| std::string os_name; |
| std::string vendor_name; |
| std::string triple; |
| uint32_t pointer_byte_size = 0; |
| StringExtractor extractor; |
| ByteOrder byte_order = eByteOrderInvalid; |
| uint32_t num_keys_decoded = 0; |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("cputype") == 0) |
| { |
| // exception type in big endian hex |
| cpu = Args::StringToUInt32 (value.c_str(), LLDB_INVALID_CPUTYPE, 0); |
| if (cpu != LLDB_INVALID_CPUTYPE) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("cpusubtype") == 0) |
| { |
| // exception count in big endian hex |
| sub = Args::StringToUInt32 (value.c_str(), 0, 0); |
| if (sub != 0) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("arch") == 0) |
| { |
| arch_name.swap (value); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("triple") == 0) |
| { |
| // The triple comes as ASCII hex bytes since it contains '-' chars |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (triple); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("os_build") == 0) |
| { |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (m_os_build); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("hostname") == 0) |
| { |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (m_hostname); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("os_kernel") == 0) |
| { |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (m_os_kernel); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("ostype") == 0) |
| { |
| os_name.swap (value); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("vendor") == 0) |
| { |
| vendor_name.swap(value); |
| ++num_keys_decoded; |
| } |
| else if (name.compare("endian") == 0) |
| { |
| ++num_keys_decoded; |
| if (value.compare("little") == 0) |
| byte_order = eByteOrderLittle; |
| else if (value.compare("big") == 0) |
| byte_order = eByteOrderBig; |
| else if (value.compare("pdp") == 0) |
| byte_order = eByteOrderPDP; |
| else |
| --num_keys_decoded; |
| } |
| else if (name.compare("ptrsize") == 0) |
| { |
| pointer_byte_size = Args::StringToUInt32 (value.c_str(), 0, 0); |
| if (pointer_byte_size != 0) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("os_version") == 0) |
| { |
| Args::StringToVersion (value.c_str(), |
| m_os_version_major, |
| m_os_version_minor, |
| m_os_version_update); |
| if (m_os_version_major != UINT32_MAX) |
| ++num_keys_decoded; |
| } |
| } |
| |
| if (num_keys_decoded > 0) |
| m_qHostInfo_is_valid = eLazyBoolYes; |
| |
| if (triple.empty()) |
| { |
| if (arch_name.empty()) |
| { |
| if (cpu != LLDB_INVALID_CPUTYPE) |
| { |
| m_host_arch.SetArchitecture (eArchTypeMachO, cpu, sub); |
| if (pointer_byte_size) |
| { |
| assert (pointer_byte_size == m_host_arch.GetAddressByteSize()); |
| } |
| if (byte_order != eByteOrderInvalid) |
| { |
| assert (byte_order == m_host_arch.GetByteOrder()); |
| } |
| if (!vendor_name.empty()) |
| m_host_arch.GetTriple().setVendorName (llvm::StringRef (vendor_name)); |
| if (!os_name.empty()) |
| m_host_arch.GetTriple().setVendorName (llvm::StringRef (os_name)); |
| |
| } |
| } |
| else |
| { |
| std::string triple; |
| triple += arch_name; |
| triple += '-'; |
| if (vendor_name.empty()) |
| triple += "unknown"; |
| else |
| triple += vendor_name; |
| triple += '-'; |
| if (os_name.empty()) |
| triple += "unknown"; |
| else |
| triple += os_name; |
| m_host_arch.SetTriple (triple.c_str()); |
| if (pointer_byte_size) |
| { |
| assert (pointer_byte_size == m_host_arch.GetAddressByteSize()); |
| } |
| if (byte_order != eByteOrderInvalid) |
| { |
| assert (byte_order == m_host_arch.GetByteOrder()); |
| } |
| |
| } |
| } |
| else |
| { |
| m_host_arch.SetTriple (triple.c_str()); |
| if (pointer_byte_size) |
| { |
| assert (pointer_byte_size == m_host_arch.GetAddressByteSize()); |
| } |
| if (byte_order != eByteOrderInvalid) |
| { |
| assert (byte_order == m_host_arch.GetByteOrder()); |
| } |
| } |
| } |
| } |
| } |
| return m_qHostInfo_is_valid == eLazyBoolYes; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SendAttach |
| ( |
| lldb::pid_t pid, |
| StringExtractorGDBRemote& response |
| ) |
| { |
| if (pid != LLDB_INVALID_PROCESS_ID) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%x", pid); |
| assert (packet_len < sizeof(packet)); |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsErrorResponse()) |
| return response.GetError(); |
| return 0; |
| } |
| } |
| return -1; |
| } |
| |
| const lldb_private::ArchSpec & |
| GDBRemoteCommunicationClient::GetHostArchitecture () |
| { |
| if (m_qHostInfo_is_valid == eLazyBoolCalculate) |
| GetHostInfo (); |
| return m_host_arch; |
| } |
| |
| addr_t |
| GDBRemoteCommunicationClient::AllocateMemory (size_t size, uint32_t permissions) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, sizeof(packet), "_M%zx,%s%s%s", size, |
| permissions & lldb::ePermissionsReadable ? "r" : "", |
| permissions & lldb::ePermissionsWritable ? "w" : "", |
| permissions & lldb::ePermissionsExecutable ? "x" : ""); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (!response.IsErrorResponse()) |
| return response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS); |
| } |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::DeallocateMemory (addr_t addr) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf(packet, sizeof(packet), "_m%llx", (uint64_t)addr); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsOKResponse()) |
| return true; |
| } |
| return false; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetSTDIN (char const *path) |
| { |
| if (path && path[0]) |
| { |
| StreamString packet; |
| packet.PutCString("QSetSTDIN:"); |
| packet.PutBytesAsRawHex8(path, strlen(path)); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetSTDOUT (char const *path) |
| { |
| if (path && path[0]) |
| { |
| StreamString packet; |
| packet.PutCString("QSetSTDOUT:"); |
| packet.PutBytesAsRawHex8(path, strlen(path)); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetSTDERR (char const *path) |
| { |
| if (path && path[0]) |
| { |
| StreamString packet; |
| packet.PutCString("QSetSTDERR:"); |
| packet.PutBytesAsRawHex8(path, strlen(path)); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetWorkingDir (char const *path) |
| { |
| if (path && path[0]) |
| { |
| StreamString packet; |
| packet.PutCString("QSetWorkingDir:"); |
| packet.PutBytesAsRawHex8(path, strlen(path)); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetDisableASLR (bool enable) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "QSetDisableASLR:%i", enable ? 1 : 0); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| return -1; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::DecodeProcessInfoResponse (StringExtractorGDBRemote &response, ProcessInfo &process_info) |
| { |
| if (response.IsNormalResponse()) |
| { |
| std::string name; |
| std::string value; |
| StringExtractor extractor; |
| |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("pid") == 0) |
| { |
| process_info.SetProcessID (Args::StringToUInt32 (value.c_str(), LLDB_INVALID_PROCESS_ID, 0)); |
| } |
| else if (name.compare("ppid") == 0) |
| { |
| process_info.SetParentProcessID (Args::StringToUInt32 (value.c_str(), LLDB_INVALID_PROCESS_ID, 0)); |
| } |
| else if (name.compare("uid") == 0) |
| { |
| process_info.SetRealUserID (Args::StringToUInt32 (value.c_str(), UINT32_MAX, 0)); |
| } |
| else if (name.compare("euid") == 0) |
| { |
| process_info.SetEffectiveUserID (Args::StringToUInt32 (value.c_str(), UINT32_MAX, 0)); |
| } |
| else if (name.compare("gid") == 0) |
| { |
| process_info.SetRealGroupID (Args::StringToUInt32 (value.c_str(), UINT32_MAX, 0)); |
| } |
| else if (name.compare("egid") == 0) |
| { |
| process_info.SetEffectiveGroupID (Args::StringToUInt32 (value.c_str(), UINT32_MAX, 0)); |
| } |
| else if (name.compare("triple") == 0) |
| { |
| // The triple comes as ASCII hex bytes since it contains '-' chars |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (value); |
| process_info.GetArchitecture ().SetTriple (value.c_str()); |
| } |
| else if (name.compare("name") == 0) |
| { |
| StringExtractor extractor; |
| // The the process name from ASCII hex bytes since we can't |
| // control the characters in a process name |
| extractor.GetStringRef().swap(value); |
| extractor.SetFilePos(0); |
| extractor.GetHexByteString (value); |
| process_info.SwapName (value); |
| } |
| } |
| |
| if (process_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) |
| return true; |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetProcessInfo (lldb::pid_t pid, ProcessInfo &process_info) |
| { |
| process_info.Clear(); |
| |
| if (m_supports_qProcessInfoPID) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "qProcessInfoPID:%i", pid); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsUnsupportedResponse()) |
| { |
| m_supports_qProcessInfoPID = false; |
| return false; |
| } |
| |
| return DecodeProcessInfoResponse (response, process_info); |
| } |
| } |
| return false; |
| } |
| |
| uint32_t |
| GDBRemoteCommunicationClient::FindProcesses (const ProcessInfoMatch &match_info, |
| ProcessInfoList &process_infos) |
| { |
| process_infos.Clear(); |
| |
| if (m_supports_qfProcessInfo) |
| { |
| StreamString packet; |
| packet.PutCString ("qfProcessInfo"); |
| if (!match_info.MatchAllProcesses()) |
| { |
| packet.PutChar (':'); |
| const char *name = match_info.GetProcessInfo().GetName(); |
| bool has_name_match = false; |
| if (name && name[0]) |
| { |
| has_name_match = true; |
| NameMatchType name_match_type = match_info.GetNameMatchType(); |
| switch (name_match_type) |
| { |
| case eNameMatchIgnore: |
| has_name_match = false; |
| break; |
| |
| case eNameMatchEquals: |
| packet.PutCString ("name_match:equals;"); |
| break; |
| |
| case eNameMatchContains: |
| packet.PutCString ("name_match:contains;"); |
| break; |
| |
| case eNameMatchStartsWith: |
| packet.PutCString ("name_match:starts_with;"); |
| break; |
| |
| case eNameMatchEndsWith: |
| packet.PutCString ("name_match:ends_with;"); |
| break; |
| |
| case eNameMatchRegularExpression: |
| packet.PutCString ("name_match:regex;"); |
| break; |
| } |
| if (has_name_match) |
| { |
| packet.PutCString ("name:"); |
| packet.PutBytesAsRawHex8(name, ::strlen(name)); |
| packet.PutChar (';'); |
| } |
| } |
| |
| if (match_info.GetProcessInfo().ProcessIDIsValid()) |
| packet.Printf("pid:%u;",match_info.GetProcessInfo().GetProcessID()); |
| if (match_info.GetProcessInfo().ParentProcessIDIsValid()) |
| packet.Printf("parent_pid:%u;",match_info.GetProcessInfo().GetParentProcessID()); |
| if (match_info.GetProcessInfo().RealUserIDIsValid()) |
| packet.Printf("uid:%u;",match_info.GetProcessInfo().GetRealUserID()); |
| if (match_info.GetProcessInfo().RealGroupIDIsValid()) |
| packet.Printf("gid:%u;",match_info.GetProcessInfo().GetRealGroupID()); |
| if (match_info.GetProcessInfo().EffectiveUserIDIsValid()) |
| packet.Printf("euid:%u;",match_info.GetProcessInfo().GetEffectiveUserID()); |
| if (match_info.GetProcessInfo().EffectiveGroupIDIsValid()) |
| packet.Printf("egid:%u;",match_info.GetProcessInfo().GetEffectiveGroupID()); |
| if (match_info.GetProcessInfo().EffectiveGroupIDIsValid()) |
| packet.Printf("all_users:%u;",match_info.GetMatchAllUsers() ? 1 : 0); |
| if (match_info.GetProcessInfo().GetArchitecture().IsValid()) |
| { |
| const ArchSpec &match_arch = match_info.GetProcessInfo().GetArchitecture(); |
| const llvm::Triple &triple = match_arch.GetTriple(); |
| packet.PutCString("triple:"); |
| packet.PutCStringAsRawHex8(triple.getTriple().c_str()); |
| packet.PutChar (';'); |
| } |
| } |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false)) |
| { |
| if (response.IsUnsupportedResponse()) |
| { |
| m_supports_qfProcessInfo = false; |
| return 0; |
| } |
| |
| do |
| { |
| ProcessInfo process_info; |
| if (!DecodeProcessInfoResponse (response, process_info)) |
| break; |
| process_infos.Append(process_info); |
| response.GetStringRef().clear(); |
| response.SetFilePos(0); |
| } while (SendPacketAndWaitForResponse ("qsProcessInfo", strlen ("qsProcessInfo"), response, false)); |
| } |
| } |
| return process_infos.GetSize(); |
| |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetUserName (uint32_t uid, std::string &name) |
| { |
| if (m_supports_qUserName) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "qUserName:%i", uid); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsUnsupportedResponse()) |
| { |
| m_supports_qUserName = false; |
| return false; |
| } |
| |
| if (response.IsNormalResponse()) |
| { |
| // Make sure we parsed the right number of characters. The response is |
| // the hex encoded user name and should make up the entire packet. |
| // If there are any non-hex ASCII bytes, the length won't match below.. |
| if (response.GetHexByteString (name) * 2 == response.GetStringRef().size()) |
| return true; |
| } |
| } |
| } |
| return false; |
| |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetGroupName (uint32_t gid, std::string &name) |
| { |
| if (m_supports_qGroupName) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "qGroupName:%i", gid); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false)) |
| { |
| if (response.IsUnsupportedResponse()) |
| { |
| m_supports_qGroupName = false; |
| return false; |
| } |
| |
| if (response.IsNormalResponse()) |
| { |
| // Make sure we parsed the right number of characters. The response is |
| // the hex encoded group name and should make up the entire packet. |
| // If there are any non-hex ASCII bytes, the length won't match below.. |
| if (response.GetHexByteString (name) * 2 == response.GetStringRef().size()) |
| return true; |
| } |
| } |
| } |
| return false; |
| |
| } |