diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp | 374 |
1 files changed, 338 insertions, 36 deletions
diff --git a/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp index 2ac7d20..2690992 100644 --- a/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp +++ b/contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp @@ -65,6 +65,7 @@ GDBRemoteCommunicationClient::GDBRemoteCommunicationClient(bool is_platform) : m_attach_or_wait_reply(eLazyBoolCalculate), m_prepare_for_reg_writing_reply (eLazyBoolCalculate), m_supports_p (eLazyBoolCalculate), + m_supports_QSaveRegisterState (eLazyBoolCalculate), m_supports_qProcessInfoPID (true), m_supports_qfProcessInfo (true), m_supports_qUserName (true), @@ -110,17 +111,35 @@ GDBRemoteCommunicationClient::~GDBRemoteCommunicationClient() bool GDBRemoteCommunicationClient::HandshakeWithServer (Error *error_ptr) { + ResetDiscoverableSettings(); + // 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 true; - - if (error_ptr) - error_ptr->SetErrorString("failed to send the handshake ack"); + { + // The return value from QueryNoAckModeSupported() is true if the packet + // was sent and _any_ response (including UNIMPLEMENTED) was received), + // or false if no response was received. This quickly tells us if we have + // a live connection to a remote GDB server... + if (QueryNoAckModeSupported()) + { + return true; + } + else + { + if (error_ptr) + error_ptr->SetErrorString("failed to get reply to handshake packet"); + } + } + else + { + if (error_ptr) + error_ptr->SetErrorString("failed to send the handshake ack"); + } return false; } -void +bool GDBRemoteCommunicationClient::QueryNoAckModeSupported () { if (m_supports_not_sending_acks == eLazyBoolCalculate) @@ -136,8 +155,10 @@ GDBRemoteCommunicationClient::QueryNoAckModeSupported () m_send_acks = false; m_supports_not_sending_acks = eLazyBoolYes; } + return true; } } + return false; } void @@ -208,6 +229,7 @@ GDBRemoteCommunicationClient::ResetDiscoverableSettings() m_supports_vCont_s = eLazyBoolCalculate; m_supports_vCont_S = eLazyBoolCalculate; m_supports_p = eLazyBoolCalculate; + m_supports_QSaveRegisterState = eLazyBoolCalculate; m_qHostInfo_is_valid = eLazyBoolCalculate; m_qProcessInfo_is_valid = eLazyBoolCalculate; m_supports_alloc_dealloc_memory = eLazyBoolCalculate; @@ -987,19 +1009,43 @@ GDBRemoteCommunicationClient::GetLaunchSuccess (std::string &error_str) } int -GDBRemoteCommunicationClient::SendArgumentsPacket (char const *argv[]) -{ - if (argv && argv[0]) +GDBRemoteCommunicationClient::SendArgumentsPacket (const ProcessLaunchInfo &launch_info) +{ + // Since we don't get the send argv0 separate from the executable path, we need to + // make sure to use the actual exectuable path found in the launch_info... + std::vector<const char *> argv; + FileSpec exe_file = launch_info.GetExecutableFile(); + std::string exe_path; + const char *arg = NULL; + const Args &launch_args = launch_info.GetArguments(); + if (exe_file) + exe_path = exe_file.GetPath(); + else + { + arg = launch_args.GetArgumentAtIndex(0); + if (arg) + exe_path = arg; + } + if (!exe_path.empty()) + { + argv.push_back(exe_path.c_str()); + for (uint32_t i=1; (arg = launch_args.GetArgumentAtIndex(i)) != NULL; ++i) + { + if (arg) + argv.push_back(arg); + } + } + if (!argv.empty()) { StreamString packet; packet.PutChar('A'); - const char *arg; - for (uint32_t i = 0; (arg = argv[i]) != NULL; ++i) + for (size_t i = 0, n = argv.size(); i < n; ++i) { + arg = argv[i]; const int arg_len = strlen(arg); if (i > 0) packet.PutChar(','); - packet.Printf("%i,%i,", arg_len * 2, i); + packet.Printf("%i,%i,", arg_len * 2, (int)i); packet.PutBytesAsRawHex8 (arg, arg_len); } @@ -1783,6 +1829,22 @@ GDBRemoteCommunicationClient::SetSTDERR (char const *path) return -1; } +bool +GDBRemoteCommunicationClient::GetWorkingDir (std::string &cwd) +{ + StringExtractorGDBRemote response; + if (SendPacketAndWaitForResponse ("qGetWorkingDir", response, false)) + { + if (response.IsUnsupportedResponse()) + return false; + if (response.IsErrorResponse()) + return false; + response.GetHexByteString (cwd); + return !cwd.empty(); + } + return false; +} + int GDBRemoteCommunicationClient::SetWorkingDir (char const *path) { @@ -2244,7 +2306,7 @@ GDBRemoteCommunicationClient::LaunchGDBserverAndGetPort (lldb::pid_t &pid) pid = LLDB_INVALID_PROCESS_ID; StringExtractorGDBRemote response; StreamString stream; - stream.PutCString("qLaunchGDBServer:port:0;"); + stream.PutCString("qLaunchGDBServer;"); std::string hostname; if (Host::GetHostname (hostname)) { @@ -2495,7 +2557,7 @@ GDBRemoteCommunicationClient::RunShellCommand (const char *command, // uint32_t timeout_sec) // Timeout in seconds to wait for shell program to finish { lldb_private::StreamString stream; - stream.PutCString("qPlatform_RunCommand:"); + stream.PutCString("qPlatform_shell:"); stream.PutBytesAsRawHex8(command, strlen(command)); stream.PutChar(','); stream.PutHex32(timeout_sec); @@ -2534,24 +2596,44 @@ GDBRemoteCommunicationClient::RunShellCommand (const char *command, // return Error("unable to send packet"); } -uint32_t -GDBRemoteCommunicationClient::MakeDirectory (const std::string &path, - mode_t mode) +Error +GDBRemoteCommunicationClient::MakeDirectory (const char *path, + uint32_t file_permissions) { lldb_private::StreamString stream; - stream.PutCString("qPlatform_IO_MkDir:"); - stream.PutHex32(mode); + stream.PutCString("qPlatform_mkdir:"); + stream.PutHex32(file_permissions); stream.PutChar(','); - stream.PutBytesAsRawHex8(path.c_str(), path.size()); + stream.PutBytesAsRawHex8(path, strlen(path)); const char *packet = stream.GetData(); int packet_len = stream.GetSize(); StringExtractorGDBRemote response; if (SendPacketAndWaitForResponse(packet, packet_len, response, false)) { - return response.GetHexMaxU32(false, UINT32_MAX); + return Error(response.GetHexMaxU32(false, UINT32_MAX), eErrorTypePOSIX); } - return UINT32_MAX; + return Error(); + +} +Error +GDBRemoteCommunicationClient::SetFilePermissions (const char *path, + uint32_t file_permissions) +{ + lldb_private::StreamString stream; + stream.PutCString("qPlatform_chmod:"); + stream.PutHex32(file_permissions); + stream.PutChar(','); + stream.PutBytesAsRawHex8(path, strlen(path)); + const char *packet = stream.GetData(); + int packet_len = stream.GetSize(); + StringExtractorGDBRemote response; + if (SendPacketAndWaitForResponse(packet, packet_len, response, false)) + { + return Error(response.GetHexMaxU32(false, UINT32_MAX), eErrorTypePOSIX); + } + return Error(); + } static uint64_t @@ -2641,13 +2723,13 @@ GDBRemoteCommunicationClient::GetFileSize (const lldb_private::FileSpec& file_sp return UINT64_MAX; } -uint32_t -GDBRemoteCommunicationClient::GetFilePermissions(const lldb_private::FileSpec& file_spec, Error &error) +Error +GDBRemoteCommunicationClient::GetFilePermissions(const char *path, uint32_t &file_permissions) { + Error error; lldb_private::StreamString stream; stream.PutCString("vFile:mode:"); - std::string path (file_spec.GetPath()); - stream.PutCStringAsRawHex8(path.c_str()); + stream.PutCStringAsRawHex8(path); const char* packet = stream.GetData(); int packet_len = stream.GetSize(); StringExtractorGDBRemote response; @@ -2656,29 +2738,34 @@ GDBRemoteCommunicationClient::GetFilePermissions(const lldb_private::FileSpec& f if (response.GetChar() != 'F') { error.SetErrorStringWithFormat ("invalid response to '%s' packet", packet); - return 0; } - const uint32_t mode = response.GetS32(-1); - if (mode == -1) + else { - if (response.GetChar() == ',') + const uint32_t mode = response.GetS32(-1); + if (mode == -1) { - int response_errno = response.GetS32(-1); - if (response_errno > 0) - error.SetError(response_errno, lldb::eErrorTypePOSIX); + if (response.GetChar() == ',') + { + int response_errno = response.GetS32(-1); + if (response_errno > 0) + error.SetError(response_errno, lldb::eErrorTypePOSIX); + else + error.SetErrorToGenericError(); + } else error.SetErrorToGenericError(); } + else + { + file_permissions = mode & (S_IRWXU|S_IRWXG|S_IRWXO); + } } - else - error.Clear(); - return mode & (S_IRWXU|S_IRWXG|S_IRWXO); } else { error.SetErrorStringWithFormat ("failed to send '%s' packet", packet); } - return 0; + return error; } uint64_t @@ -2760,6 +2847,90 @@ GDBRemoteCommunicationClient::WriteFile (lldb::user_id_t fd, return 0; } +Error +GDBRemoteCommunicationClient::CreateSymlink (const char *src, const char *dst) +{ + Error error; + lldb_private::StreamGDBRemote stream; + stream.PutCString("vFile:symlink:"); + // the unix symlink() command reverses its parameters where the dst if first, + // so we follow suit here + stream.PutCStringAsRawHex8(dst); + stream.PutChar(','); + stream.PutCStringAsRawHex8(src); + const char* packet = stream.GetData(); + int packet_len = stream.GetSize(); + StringExtractorGDBRemote response; + if (SendPacketAndWaitForResponse(packet, packet_len, response, false)) + { + if (response.GetChar() == 'F') + { + uint32_t result = response.GetU32(UINT32_MAX); + if (result != 0) + { + error.SetErrorToGenericError(); + if (response.GetChar() == ',') + { + int response_errno = response.GetS32(-1); + if (response_errno > 0) + error.SetError(response_errno, lldb::eErrorTypePOSIX); + } + } + } + else + { + // Should have returned with 'F<result>[,<errno>]' + error.SetErrorStringWithFormat("symlink failed"); + } + } + else + { + error.SetErrorString ("failed to send vFile:symlink packet"); + } + return error; +} + +Error +GDBRemoteCommunicationClient::Unlink (const char *path) +{ + Error error; + lldb_private::StreamGDBRemote stream; + stream.PutCString("vFile:unlink:"); + // the unix symlink() command reverses its parameters where the dst if first, + // so we follow suit here + stream.PutCStringAsRawHex8(path); + const char* packet = stream.GetData(); + int packet_len = stream.GetSize(); + StringExtractorGDBRemote response; + if (SendPacketAndWaitForResponse(packet, packet_len, response, false)) + { + if (response.GetChar() == 'F') + { + uint32_t result = response.GetU32(UINT32_MAX); + if (result != 0) + { + error.SetErrorToGenericError(); + if (response.GetChar() == ',') + { + int response_errno = response.GetS32(-1); + if (response_errno > 0) + error.SetError(response_errno, lldb::eErrorTypePOSIX); + } + } + } + else + { + // Should have returned with 'F<result>[,<errno>]' + error.SetErrorStringWithFormat("unlink failed"); + } + } + else + { + error.SetErrorString ("failed to send vFile:unlink packet"); + } + return error; +} + // Extension of host I/O packets to get whether a file exists. bool GDBRemoteCommunicationClient::GetFileExists (const lldb_private::FileSpec& file_spec) @@ -2809,3 +2980,134 @@ GDBRemoteCommunicationClient::CalculateMD5 (const lldb_private::FileSpec& file_s } return false; } + +bool +GDBRemoteCommunicationClient::ReadRegister(lldb::tid_t tid, uint32_t reg, StringExtractorGDBRemote &response) +{ + Mutex::Locker locker; + if (GetSequenceMutex (locker, "Didn't get sequence mutex for p packet.")) + { + const bool thread_suffix_supported = GetThreadSuffixSupported(); + + if (thread_suffix_supported || SetCurrentThread(tid)) + { + char packet[64]; + int packet_len = 0; + if (thread_suffix_supported) + packet_len = ::snprintf (packet, sizeof(packet), "p%x;thread:%4.4" PRIx64 ";", reg, tid); + else + packet_len = ::snprintf (packet, sizeof(packet), "p%x", reg); + assert (packet_len < ((int)sizeof(packet) - 1)); + return SendPacketAndWaitForResponse(packet, response, false); + } + } + return false; + +} + + +bool +GDBRemoteCommunicationClient::ReadAllRegisters (lldb::tid_t tid, StringExtractorGDBRemote &response) +{ + Mutex::Locker locker; + if (GetSequenceMutex (locker, "Didn't get sequence mutex for g packet.")) + { + const bool thread_suffix_supported = GetThreadSuffixSupported(); + + if (thread_suffix_supported || SetCurrentThread(tid)) + { + char packet[64]; + int packet_len = 0; + // Get all registers in one packet + if (thread_suffix_supported) + packet_len = ::snprintf (packet, sizeof(packet), "g;thread:%4.4" PRIx64 ";", tid); + else + packet_len = ::snprintf (packet, sizeof(packet), "g"); + assert (packet_len < ((int)sizeof(packet) - 1)); + return SendPacketAndWaitForResponse(packet, response, false); + } + } + return false; +} +bool +GDBRemoteCommunicationClient::SaveRegisterState (lldb::tid_t tid, uint32_t &save_id) +{ + save_id = 0; // Set to invalid save ID + if (m_supports_QSaveRegisterState == eLazyBoolNo) + return false; + + m_supports_QSaveRegisterState = eLazyBoolYes; + Mutex::Locker locker; + if (GetSequenceMutex (locker, "Didn't get sequence mutex for QSaveRegisterState.")) + { + const bool thread_suffix_supported = GetThreadSuffixSupported(); + if (thread_suffix_supported || SetCurrentThread(tid)) + { + char packet[256]; + if (thread_suffix_supported) + ::snprintf (packet, sizeof(packet), "QSaveRegisterState;thread:%4.4" PRIx64 ";", tid); + else + ::strncpy (packet, "QSaveRegisterState", sizeof(packet)); + + StringExtractorGDBRemote response; + + if (SendPacketAndWaitForResponse(packet, response, false)) + { + if (response.IsUnsupportedResponse()) + { + // This packet isn't supported, don't try calling it again + m_supports_QSaveRegisterState = eLazyBoolNo; + } + + const uint32_t response_save_id = response.GetU32(0); + if (response_save_id != 0) + { + save_id = response_save_id; + return true; + } + } + } + } + return false; +} + +bool +GDBRemoteCommunicationClient::RestoreRegisterState (lldb::tid_t tid, uint32_t save_id) +{ + // We use the "m_supports_QSaveRegisterState" variable here becuase the + // QSaveRegisterState and QRestoreRegisterState packets must both be supported in + // order to be useful + if (m_supports_QSaveRegisterState == eLazyBoolNo) + return false; + + Mutex::Locker locker; + if (GetSequenceMutex (locker, "Didn't get sequence mutex for QRestoreRegisterState.")) + { + const bool thread_suffix_supported = GetThreadSuffixSupported(); + if (thread_suffix_supported || SetCurrentThread(tid)) + { + char packet[256]; + if (thread_suffix_supported) + ::snprintf (packet, sizeof(packet), "QRestoreRegisterState:%u;thread:%4.4" PRIx64 ";", save_id, tid); + else + ::snprintf (packet, sizeof(packet), "QRestoreRegisterState:%u" PRIx64 ";", save_id); + + StringExtractorGDBRemote response; + + if (SendPacketAndWaitForResponse(packet, response, false)) + { + if (response.IsOKResponse()) + { + return true; + } + else if (response.IsUnsupportedResponse()) + { + // This packet isn't supported, don't try calling this packet or + // QSaveRegisterState again... + m_supports_QSaveRegisterState = eLazyBoolNo; + } + } + } + } + return false; +} |
