| //===-- 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 |
| #include <sys/stat.h> |
| |
| // C++ Includes |
| #include <sstream> |
| |
| // Other libraries and framework includes |
| #include "llvm/ADT/STLExtras.h" |
| #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/StreamGDBRemote.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Host/Endian.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/TimeValue.h" |
| #include "lldb/Target/Target.h" |
| |
| // Project includes |
| #include "Utility/StringExtractorGDBRemote.h" |
| #include "ProcessGDBRemote.h" |
| #include "ProcessGDBRemoteLog.h" |
| #include "lldb/Host/Config.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| #if defined(LLDB_DISABLE_POSIX) && !defined(SIGSTOP) |
| #define SIGSTOP 17 |
| #endif |
| |
| //---------------------------------------------------------------------- |
| // GDBRemoteCommunicationClient constructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::GDBRemoteCommunicationClient(bool is_platform) : |
| GDBRemoteCommunication("gdb-remote.client", "gdb-remote.client.rx_packet", is_platform), |
| m_supports_not_sending_acks (eLazyBoolCalculate), |
| m_supports_thread_suffix (eLazyBoolCalculate), |
| m_supports_threads_in_stop_reply (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_curr_pid_is_valid (eLazyBoolCalculate), |
| m_qProcessInfo_is_valid (eLazyBoolCalculate), |
| m_qGDBServerVersion_is_valid (eLazyBoolCalculate), |
| m_supports_alloc_dealloc_memory (eLazyBoolCalculate), |
| m_supports_memory_region_info (eLazyBoolCalculate), |
| m_supports_watchpoint_support_info (eLazyBoolCalculate), |
| m_supports_detach_stay_stopped (eLazyBoolCalculate), |
| m_watchpoints_trigger_after_instruction(eLazyBoolCalculate), |
| m_attach_or_wait_reply(eLazyBoolCalculate), |
| m_prepare_for_reg_writing_reply (eLazyBoolCalculate), |
| m_supports_p (eLazyBoolCalculate), |
| m_supports_x (eLazyBoolCalculate), |
| m_avoid_g_packets (eLazyBoolCalculate), |
| m_supports_QSaveRegisterState (eLazyBoolCalculate), |
| m_supports_qXfer_auxv_read (eLazyBoolCalculate), |
| m_supports_qXfer_libraries_read (eLazyBoolCalculate), |
| m_supports_qXfer_libraries_svr4_read (eLazyBoolCalculate), |
| m_supports_augmented_libraries_svr4_read (eLazyBoolCalculate), |
| m_supports_jThreadExtendedInfo (eLazyBoolCalculate), |
| m_supports_qProcessInfoPID (true), |
| m_supports_qfProcessInfo (true), |
| m_supports_qUserName (true), |
| m_supports_qGroupName (true), |
| m_supports_qThreadStopInfo (true), |
| m_supports_z0 (true), |
| m_supports_z1 (true), |
| m_supports_z2 (true), |
| m_supports_z3 (true), |
| m_supports_z4 (true), |
| m_supports_QEnvironment (true), |
| m_supports_QEnvironmentHexEncoded (true), |
| m_curr_pid (LLDB_INVALID_PROCESS_ID), |
| m_curr_tid (LLDB_INVALID_THREAD_ID), |
| m_curr_tid_run (LLDB_INVALID_THREAD_ID), |
| m_num_supported_hardware_watchpoints (0), |
| m_async_mutex (Mutex::eMutexTypeRecursive), |
| m_async_packet_predicate (false), |
| m_async_packet (), |
| m_async_result (PacketResult::Success), |
| m_async_response (), |
| m_async_signal (-1), |
| m_interrupt_sent (false), |
| m_thread_id_to_used_usec_map (), |
| m_host_arch(), |
| m_process_arch(), |
| m_os_version_major (UINT32_MAX), |
| m_os_version_minor (UINT32_MAX), |
| m_os_version_update (UINT32_MAX), |
| m_os_build (), |
| m_os_kernel (), |
| m_hostname (), |
| m_gdb_server_name(), |
| m_gdb_server_version(UINT32_MAX), |
| m_default_packet_timeout (0), |
| m_max_packet_size (0) |
| { |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::~GDBRemoteCommunicationClient() |
| { |
| if (IsConnected()) |
| Disconnect(); |
| } |
| |
| 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()) |
| { |
| // Wait for any responses that might have been queued up in the remote |
| // GDB server and flush them all |
| StringExtractorGDBRemote response; |
| PacketResult packet_result = PacketResult::Success; |
| const uint32_t timeout_usec = 10 * 1000; // Wait for 10 ms for a response |
| while (packet_result == PacketResult::Success) |
| packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (response, timeout_usec); |
| |
| // 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()) |
| { |
| #if 0 |
| // Set above line to "#if 1" to test packet speed if remote GDB server |
| // supports the qSpeedTest packet... |
| TestPacketSpeed(10000); |
| #endif |
| 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; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetAugmentedLibrariesSVR4ReadSupported () |
| { |
| if (m_supports_augmented_libraries_svr4_read == eLazyBoolCalculate) |
| { |
| GetRemoteQSupported(); |
| } |
| return (m_supports_augmented_libraries_svr4_read == eLazyBoolYes); |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetQXferLibrariesSVR4ReadSupported () |
| { |
| if (m_supports_qXfer_libraries_svr4_read == eLazyBoolCalculate) |
| { |
| GetRemoteQSupported(); |
| } |
| return (m_supports_qXfer_libraries_svr4_read == eLazyBoolYes); |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetQXferLibrariesReadSupported () |
| { |
| if (m_supports_qXfer_libraries_read == eLazyBoolCalculate) |
| { |
| GetRemoteQSupported(); |
| } |
| return (m_supports_qXfer_libraries_read == eLazyBoolYes); |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetQXferAuxvReadSupported () |
| { |
| if (m_supports_qXfer_auxv_read == eLazyBoolCalculate) |
| { |
| GetRemoteQSupported(); |
| } |
| return (m_supports_qXfer_auxv_read == eLazyBoolYes); |
| } |
| |
| uint64_t |
| GDBRemoteCommunicationClient::GetRemoteMaxPacketSize() |
| { |
| if (m_max_packet_size == 0) |
| { |
| GetRemoteQSupported(); |
| } |
| return m_max_packet_size; |
| } |
| |
| bool |
| 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) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| { |
| m_send_acks = false; |
| m_supports_not_sending_acks = eLazyBoolYes; |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void |
| GDBRemoteCommunicationClient::GetListThreadsInStopReplySupported () |
| { |
| if (m_supports_threads_in_stop_reply == eLazyBoolCalculate) |
| { |
| m_supports_threads_in_stop_reply = eLazyBoolNo; |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("QListThreadsInStopReply", response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| m_supports_threads_in_stop_reply = eLazyBoolYes; |
| } |
| } |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetVAttachOrWaitSupported () |
| { |
| if (m_attach_or_wait_reply == eLazyBoolCalculate) |
| { |
| m_attach_or_wait_reply = eLazyBoolNo; |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qVAttachOrWaitSupported", response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| m_attach_or_wait_reply = eLazyBoolYes; |
| } |
| } |
| if (m_attach_or_wait_reply == eLazyBoolYes) |
| return true; |
| else |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetSyncThreadStateSupported () |
| { |
| if (m_prepare_for_reg_writing_reply == eLazyBoolCalculate) |
| { |
| m_prepare_for_reg_writing_reply = eLazyBoolNo; |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qSyncThreadStateSupported", response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| m_prepare_for_reg_writing_reply = eLazyBoolYes; |
| } |
| } |
| if (m_prepare_for_reg_writing_reply == eLazyBoolYes) |
| return true; |
| else |
| return false; |
| } |
| |
| |
| void |
| GDBRemoteCommunicationClient::ResetDiscoverableSettings() |
| { |
| m_supports_not_sending_acks = eLazyBoolCalculate; |
| m_supports_thread_suffix = eLazyBoolCalculate; |
| m_supports_threads_in_stop_reply = eLazyBoolCalculate; |
| m_supports_vCont_c = eLazyBoolCalculate; |
| m_supports_vCont_C = eLazyBoolCalculate; |
| m_supports_vCont_s = eLazyBoolCalculate; |
| m_supports_vCont_S = eLazyBoolCalculate; |
| m_supports_p = eLazyBoolCalculate; |
| m_supports_x = eLazyBoolCalculate; |
| m_supports_QSaveRegisterState = eLazyBoolCalculate; |
| m_qHostInfo_is_valid = eLazyBoolCalculate; |
| m_curr_pid_is_valid = eLazyBoolCalculate; |
| m_qProcessInfo_is_valid = eLazyBoolCalculate; |
| m_qGDBServerVersion_is_valid = eLazyBoolCalculate; |
| m_supports_alloc_dealloc_memory = eLazyBoolCalculate; |
| m_supports_memory_region_info = eLazyBoolCalculate; |
| m_prepare_for_reg_writing_reply = eLazyBoolCalculate; |
| m_attach_or_wait_reply = eLazyBoolCalculate; |
| m_avoid_g_packets = eLazyBoolCalculate; |
| m_supports_qXfer_auxv_read = eLazyBoolCalculate; |
| m_supports_qXfer_libraries_read = eLazyBoolCalculate; |
| m_supports_qXfer_libraries_svr4_read = eLazyBoolCalculate; |
| m_supports_augmented_libraries_svr4_read = eLazyBoolCalculate; |
| |
| m_supports_qProcessInfoPID = true; |
| m_supports_qfProcessInfo = true; |
| m_supports_qUserName = true; |
| m_supports_qGroupName = true; |
| m_supports_qThreadStopInfo = true; |
| m_supports_z0 = true; |
| m_supports_z1 = true; |
| m_supports_z2 = true; |
| m_supports_z3 = true; |
| m_supports_z4 = true; |
| m_supports_QEnvironment = true; |
| m_supports_QEnvironmentHexEncoded = true; |
| |
| m_host_arch.Clear(); |
| m_process_arch.Clear(); |
| m_os_version_major = UINT32_MAX; |
| m_os_version_minor = UINT32_MAX; |
| m_os_version_update = UINT32_MAX; |
| m_os_build.clear(); |
| m_os_kernel.clear(); |
| m_hostname.clear(); |
| m_gdb_server_name.clear(); |
| m_gdb_server_version = UINT32_MAX; |
| m_default_packet_timeout = 0; |
| |
| m_max_packet_size = 0; |
| } |
| |
| void |
| GDBRemoteCommunicationClient::GetRemoteQSupported () |
| { |
| // Clear out any capabilities we expect to see in the qSupported response |
| m_supports_qXfer_auxv_read = eLazyBoolNo; |
| m_supports_qXfer_libraries_read = eLazyBoolNo; |
| m_supports_qXfer_libraries_svr4_read = eLazyBoolNo; |
| m_supports_augmented_libraries_svr4_read = eLazyBoolNo; |
| m_max_packet_size = UINT64_MAX; // It's supposed to always be there, but if not, we assume no limit |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qSupported", |
| response, |
| /*send_async=*/false) == PacketResult::Success) |
| { |
| const char *response_cstr = response.GetStringRef().c_str(); |
| if (::strstr (response_cstr, "qXfer:auxv:read+")) |
| m_supports_qXfer_auxv_read = eLazyBoolYes; |
| if (::strstr (response_cstr, "qXfer:libraries-svr4:read+")) |
| m_supports_qXfer_libraries_svr4_read = eLazyBoolYes; |
| if (::strstr (response_cstr, "augmented-libraries-svr4-read")) |
| { |
| m_supports_qXfer_libraries_svr4_read = eLazyBoolYes; // implied |
| m_supports_augmented_libraries_svr4_read = eLazyBoolYes; |
| } |
| if (::strstr (response_cstr, "qXfer:libraries:read+")) |
| m_supports_qXfer_libraries_read = eLazyBoolYes; |
| |
| const char *packet_size_str = ::strstr (response_cstr, "PacketSize="); |
| if (packet_size_str) |
| { |
| StringExtractorGDBRemote packet_response(packet_size_str + strlen("PacketSize=")); |
| m_max_packet_size = packet_response.GetHexMaxU64(/*little_endian=*/false, UINT64_MAX); |
| if (m_max_packet_size == 0) |
| { |
| m_max_packet_size = UINT64_MAX; // Must have been a garbled response |
| Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("Garbled PacketSize spec in qSupported response"); |
| } |
| } |
| } |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetThreadSuffixSupported () |
| { |
| if (m_supports_thread_suffix == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_thread_suffix = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("QThreadSuffixSupported", response, false) == PacketResult::Success) |
| { |
| 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) == PacketResult::Success) |
| { |
| 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; |
| } |
| |
| // Check if the target supports 'p' packet. It sends out a 'p' |
| // packet and checks the response. A normal packet will tell us |
| // that support is available. |
| // |
| // Takes a valid thread ID because p needs to apply to a thread. |
| bool |
| GDBRemoteCommunicationClient::GetpPacketSupported (lldb::tid_t tid) |
| { |
| if (m_supports_p == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_p = eLazyBoolNo; |
| char packet[256]; |
| if (GetThreadSuffixSupported()) |
| snprintf(packet, sizeof(packet), "p0;thread:%" PRIx64 ";", tid); |
| else |
| snprintf(packet, sizeof(packet), "p0"); |
| |
| if (SendPacketAndWaitForResponse(packet, response, false) == PacketResult::Success) |
| { |
| if (response.IsNormalResponse()) |
| m_supports_p = eLazyBoolYes; |
| } |
| } |
| return m_supports_p; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetThreadExtendedInfoSupported () |
| { |
| if (m_supports_jThreadExtendedInfo == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_jThreadExtendedInfo = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("jThreadExtendedInfo:", response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| { |
| m_supports_jThreadExtendedInfo = eLazyBoolYes; |
| } |
| } |
| } |
| return m_supports_jThreadExtendedInfo; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetxPacketSupported () |
| { |
| if (m_supports_x == eLazyBoolCalculate) |
| { |
| StringExtractorGDBRemote response; |
| m_supports_x = eLazyBoolNo; |
| char packet[256]; |
| snprintf (packet, sizeof (packet), "x0,0"); |
| if (SendPacketAndWaitForResponse(packet, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| m_supports_x = eLazyBoolYes; |
| } |
| } |
| return m_supports_x; |
| } |
| |
| GDBRemoteCommunicationClient::PacketResult |
| GDBRemoteCommunicationClient::SendPacketsAndConcatenateResponses |
| ( |
| const char *payload_prefix, |
| std::string &response_string |
| ) |
| { |
| Mutex::Locker locker; |
| if (!GetSequenceMutex(locker, |
| "ProcessGDBRemote::SendPacketsAndConcatenateResponses() failed due to not getting the sequence mutex")) |
| { |
| Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_PROCESS | GDBR_LOG_PACKETS)); |
| if (log) |
| log->Printf("error: failed to get packet sequence mutex, not sending packets with prefix '%s'", |
| payload_prefix); |
| return PacketResult::ErrorNoSequenceLock; |
| } |
| |
| response_string = ""; |
| std::string payload_prefix_str(payload_prefix); |
| unsigned int response_size = 0x1000; |
| if (response_size > GetRemoteMaxPacketSize()) { // May send qSupported packet |
| response_size = GetRemoteMaxPacketSize(); |
| } |
| |
| for (unsigned int offset = 0; true; offset += response_size) |
| { |
| StringExtractorGDBRemote this_response; |
| // Construct payload |
| char sizeDescriptor[128]; |
| snprintf(sizeDescriptor, sizeof(sizeDescriptor), "%x,%x", offset, response_size); |
| PacketResult result = SendPacketAndWaitForResponse((payload_prefix_str + sizeDescriptor).c_str(), |
| this_response, |
| /*send_async=*/false); |
| if (result != PacketResult::Success) |
| return result; |
| |
| const std::string &this_string = this_response.GetStringRef(); |
| |
| // Check for m or l as first character; l seems to mean this is the last chunk |
| char first_char = *this_string.c_str(); |
| if (first_char != 'm' && first_char != 'l') |
| { |
| return PacketResult::ErrorReplyInvalid; |
| } |
| // Concatenate the result so far (skipping 'm' or 'l') |
| response_string.append(this_string, 1, std::string::npos); |
| if (first_char == 'l') |
| // We're done |
| return PacketResult::Success; |
| } |
| } |
| |
| GDBRemoteCommunicationClient::PacketResult |
| GDBRemoteCommunicationClient::SendPacketAndWaitForResponse |
| ( |
| const char *payload, |
| StringExtractorGDBRemote &response, |
| bool send_async |
| ) |
| { |
| return SendPacketAndWaitForResponse (payload, |
| ::strlen (payload), |
| response, |
| send_async); |
| } |
| |
| GDBRemoteCommunicationClient::PacketResult |
| GDBRemoteCommunicationClient::SendPacketAndWaitForResponseNoLock (const char *payload, |
| size_t payload_length, |
| StringExtractorGDBRemote &response) |
| { |
| PacketResult packet_result = SendPacketNoLock (payload, payload_length); |
| if (packet_result == PacketResult::Success) |
| packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (response, GetPacketTimeoutInMicroSeconds ()); |
| return packet_result; |
| } |
| |
| GDBRemoteCommunicationClient::PacketResult |
| GDBRemoteCommunicationClient::SendPacketAndWaitForResponse |
| ( |
| const char *payload, |
| size_t payload_length, |
| StringExtractorGDBRemote &response, |
| bool send_async |
| ) |
| { |
| PacketResult packet_result = PacketResult::ErrorSendFailed; |
| Mutex::Locker locker; |
| Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (GetSequenceMutex (locker)) |
| { |
| packet_result = SendPacketAndWaitForResponseNoLock (payload, payload_length, response); |
| } |
| else |
| { |
| if (send_async) |
| { |
| if (IsRunning()) |
| { |
| 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; |
| if (SendInterrupt(locker, 2, timed_out)) |
| { |
| if (m_interrupt_sent) |
| { |
| m_interrupt_sent = false; |
| TimeValue timeout_time; |
| timeout_time = TimeValue::Now(); |
| timeout_time.OffsetWithSeconds (m_packet_timeout); |
| |
| 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"); |
| |
| // Swap the response buffer to avoid malloc and string copy |
| response.GetStringRef().swap (m_async_response.GetStringRef()); |
| packet_result = m_async_result; |
| } |
| 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) |
| { |
| if (timed_out) |
| log->Printf ("async: timed out waiting for process to resume, but process was resumed"); |
| else |
| log->Printf ("async: async packet sent"); |
| } |
| } |
| else |
| { |
| 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 lock, so the process must have |
| // just stopped? |
| if (log) |
| log->Printf ("async: got lock without sending interrupt"); |
| // Send the packet normally since we got the lock |
| packet_result = SendPacketAndWaitForResponseNoLock (payload, payload_length, response); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("async: failed to interrupt"); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("async: not running, async is ignored"); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf("error: failed to get packet sequence mutex, not sending packet '%*s'", (int) payload_length, payload); |
| } |
| } |
| return packet_result; |
| } |
| |
| static const char *end_delimiter = "--end--;"; |
| static const int end_delimiter_len = 8; |
| |
| std::string |
| GDBRemoteCommunicationClient::HarmonizeThreadIdsForProfileData |
| ( ProcessGDBRemote *process, |
| StringExtractorGDBRemote& profileDataExtractor |
| ) |
| { |
| std::map<uint64_t, uint32_t> new_thread_id_to_used_usec_map; |
| std::stringstream final_output; |
| std::string name, value; |
| |
| // Going to assuming thread_used_usec comes first, else bail out. |
| while (profileDataExtractor.GetNameColonValue(name, value)) |
| { |
| if (name.compare("thread_used_id") == 0) |
| { |
| StringExtractor threadIDHexExtractor(value.c_str()); |
| uint64_t thread_id = threadIDHexExtractor.GetHexMaxU64(false, 0); |
| |
| bool has_used_usec = false; |
| uint32_t curr_used_usec = 0; |
| std::string usec_name, usec_value; |
| uint32_t input_file_pos = profileDataExtractor.GetFilePos(); |
| if (profileDataExtractor.GetNameColonValue(usec_name, usec_value)) |
| { |
| if (usec_name.compare("thread_used_usec") == 0) |
| { |
| has_used_usec = true; |
| curr_used_usec = strtoull(usec_value.c_str(), NULL, 0); |
| } |
| else |
| { |
| // We didn't find what we want, it is probably |
| // an older version. Bail out. |
| profileDataExtractor.SetFilePos(input_file_pos); |
| } |
| } |
| |
| if (has_used_usec) |
| { |
| uint32_t prev_used_usec = 0; |
| std::map<uint64_t, uint32_t>::iterator iterator = m_thread_id_to_used_usec_map.find(thread_id); |
| if (iterator != m_thread_id_to_used_usec_map.end()) |
| { |
| prev_used_usec = m_thread_id_to_used_usec_map[thread_id]; |
| } |
| |
| uint32_t real_used_usec = curr_used_usec - prev_used_usec; |
| // A good first time record is one that runs for at least 0.25 sec |
| bool good_first_time = (prev_used_usec == 0) && (real_used_usec > 250000); |
| bool good_subsequent_time = (prev_used_usec > 0) && |
| ((real_used_usec > 0) || (process->HasAssignedIndexIDToThread(thread_id))); |
| |
| if (good_first_time || good_subsequent_time) |
| { |
| // We try to avoid doing too many index id reservation, |
| // resulting in fast increase of index ids. |
| |
| final_output << name << ":"; |
| int32_t index_id = process->AssignIndexIDToThread(thread_id); |
| final_output << index_id << ";"; |
| |
| final_output << usec_name << ":" << usec_value << ";"; |
| } |
| else |
| { |
| // Skip past 'thread_used_name'. |
| std::string local_name, local_value; |
| profileDataExtractor.GetNameColonValue(local_name, local_value); |
| } |
| |
| // Store current time as previous time so that they can be compared later. |
| new_thread_id_to_used_usec_map[thread_id] = curr_used_usec; |
| } |
| else |
| { |
| // Bail out and use old string. |
| final_output << name << ":" << value << ";"; |
| } |
| } |
| else |
| { |
| final_output << name << ":" << value << ";"; |
| } |
| } |
| final_output << end_delimiter; |
| m_thread_id_to_used_usec_map = new_thread_id_to_used_usec_map; |
| |
| return final_output.str(); |
| } |
| |
| StateType |
| GDBRemoteCommunicationClient::SendContinuePacketAndWaitForResponse |
| ( |
| ProcessGDBRemote *process, |
| const char *payload, |
| size_t packet_length, |
| StringExtractorGDBRemote &response |
| ) |
| { |
| m_curr_tid = LLDB_INVALID_THREAD_ID; |
| Log *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 |
| // may change if we are interrupted and we continue after an async packet... |
| std::string continue_packet(payload, packet_length); |
| |
| bool got_async_packet = false; |
| |
| while (state == eStateRunning) |
| { |
| if (!got_async_packet) |
| { |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () sending continue packet: %s", __FUNCTION__, continue_packet.c_str()); |
| if (SendPacketNoLock(continue_packet.c_str(), continue_packet.size()) != PacketResult::Success) |
| state = eStateInvalid; |
| else |
| m_interrupt_sent = false; |
| |
| m_private_is_running.SetValue (true, eBroadcastAlways); |
| } |
| |
| got_async_packet = false; |
| |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s () WaitForPacket(%s)", __FUNCTION__, continue_packet.c_str()); |
| |
| if (WaitForPacketWithTimeoutMicroSecondsNoLock(response, UINT32_MAX) == PacketResult::Success) |
| { |
| 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); |
| |
| const uint8_t signo = response.GetHexU8 (UINT8_MAX); |
| |
| bool continue_after_async = m_async_signal != -1 || m_async_packet_predicate.GetValue(); |
| if (continue_after_async || m_interrupt_sent) |
| { |
| // We sent an interrupt packet to stop the inferior process |
| // for an async signal or to send an async packet while running |
| // but we might have been single stepping and received the |
| // stop packet for the step instead of for the interrupt packet. |
| // Typically when an interrupt is sent a SIGINT or SIGSTOP |
| // is used, so if we get anything else, we need to try and |
| // get another stop reply packet that may have been sent |
| // due to sending the interrupt when the target is stopped |
| // which will just re-send a copy of the last stop reply |
| // packet. If we don't do this, then the reply for our |
| // async packet will be the repeat stop reply packet and cause |
| // a lot of trouble for us! |
| if (signo != SIGINT && signo != SIGSTOP) |
| { |
| continue_after_async = false; |
| |
| // We didn't get a a SIGINT or SIGSTOP, so try for a |
| // very brief time (1 ms) to get another stop reply |
| // packet to make sure it doesn't get in the way |
| StringExtractorGDBRemote extra_stop_reply_packet; |
| uint32_t timeout_usec = 1000; |
| if (WaitForPacketWithTimeoutMicroSecondsNoLock (extra_stop_reply_packet, timeout_usec) == PacketResult::Success) |
| { |
| switch (extra_stop_reply_packet.GetChar()) |
| { |
| case 'T': |
| case 'S': |
| // We did get an extra stop reply, which means |
| // our interrupt didn't stop the target so we |
| // shouldn't continue after the async signal |
| // or packet is sent... |
| continue_after_async = false; |
| break; |
| } |
| } |
| } |
| } |
| |
| 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 |
| 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 |
| } |
| 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 even if the |
| // interrupt didn't cause our stop (ignore continue_after_async) |
| continue_packet.assign(signal_packet, signal_packet_len); |
| continue; |
| } |
| } |
| else if (m_async_packet_predicate.GetValue()) |
| { |
| Log * packet_log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PACKETS)); |
| |
| // We are supposed to send an asynchronous packet while |
| // we are running. |
| m_async_response.Clear(); |
| if (m_async_packet.empty()) |
| { |
| m_async_result = PacketResult::ErrorSendFailed; |
| if (packet_log) |
| packet_log->Printf ("async: error: empty async packet"); |
| |
| } |
| else |
| { |
| if (packet_log) |
| packet_log->Printf ("async: sending packet"); |
| |
| m_async_result = 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); |
| |
| if (packet_log) |
| packet_log->Printf ("async: sent packet, continue_after_async = %i", continue_after_async); |
| |
| // Set the continue packet to resume if our interrupt |
| // for the async packet did cause the stop |
| if (continue_after_async) |
| { |
| // Reverting this for now as it is causing deadlocks |
| // in programs (<rdar://problem/11529853>). In the future |
| // we should check our thread list and "do the right thing" |
| // for new threads that show up while we stop and run async |
| // packets. Setting the packet to 'c' to continue all threads |
| // is the right thing to do 99.99% of the time because if a |
| // thread was single stepping, and we sent an interrupt, we |
| // will notice above that we didn't stop due to an interrupt |
| // but stopped due to stepping and we would _not_ continue. |
| 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 |
| { |
| got_async_packet = true; |
| 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 'A': |
| // Async miscellaneous reply. Right now, only profile data is coming through this channel. |
| { |
| got_async_packet = true; |
| std::string input = response.GetStringRef().substr(1); // '1' to move beyond 'A' |
| if (m_partial_profile_data.length() > 0) |
| { |
| m_partial_profile_data.append(input); |
| input = m_partial_profile_data; |
| m_partial_profile_data.clear(); |
| } |
| |
| size_t found, pos = 0, len = input.length(); |
| while ((found = input.find(end_delimiter, pos)) != std::string::npos) |
| { |
| StringExtractorGDBRemote profileDataExtractor(input.substr(pos, found).c_str()); |
| std::string profile_data = HarmonizeThreadIdsForProfileData(process, profileDataExtractor); |
| process->BroadcastAsyncProfileData (profile_data); |
| |
| pos = found + end_delimiter_len; |
| } |
| |
| if (pos < len) |
| { |
| // Last incomplete chunk. |
| m_partial_profile_data = input.substr(pos); |
| } |
| } |
| 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) |
| { |
| Mutex::Locker async_locker (m_async_mutex); |
| m_async_signal = signo; |
| bool timed_out = false; |
| Mutex::Locker locker; |
| if (SendInterrupt (locker, 1, 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 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 &timed_out |
| ) |
| { |
| timed_out = false; |
| Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_PROCESS | GDBR_LOG_PACKETS)); |
| |
| if (IsRunning()) |
| { |
| // Only send an interrupt if our debugserver is running... |
| if (GetSequenceMutex (locker)) |
| { |
| if (log) |
| log->Printf ("SendInterrupt () - got sequence mutex without having to interrupt"); |
| } |
| else |
| { |
| // 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; |
| size_t bytes_written = Write (&ctrl_c, 1, status, NULL); |
| if (log) |
| log->PutCString("send packet: \\x03"); |
| if (bytes_written > 0) |
| { |
| m_interrupt_sent = true; |
| if (seconds_to_wait_for_stop) |
| { |
| TimeValue timeout; |
| if (seconds_to_wait_for_stop) |
| { |
| timeout = TimeValue::Now(); |
| timeout.OffsetWithSeconds (seconds_to_wait_for_stop); |
| } |
| if (m_private_is_running.WaitForValueEqualTo (false, &timeout, &timed_out)) |
| { |
| if (log) |
| log->PutCString ("SendInterrupt () - sent interrupt, private state stopped"); |
| return true; |
| } |
| else |
| { |
| if (log) |
| log->Printf ("SendInterrupt () - sent interrupt, timed out wating for async thread resume"); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("SendInterrupt () - sent interrupt, not waiting for stop..."); |
| return true; |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("SendInterrupt () - failed to write interrupt"); |
| } |
| return false; |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("SendInterrupt () - not running"); |
| } |
| return true; |
| } |
| |
| lldb::pid_t |
| GDBRemoteCommunicationClient::GetCurrentProcessID () |
| { |
| if (m_curr_pid_is_valid == eLazyBoolYes) |
| return m_curr_pid; |
| |
| // First try to retrieve the pid via the qProcessInfo request. |
| GetCurrentProcessInfo (); |
| if (m_curr_pid_is_valid == eLazyBoolYes) |
| { |
| // We really got it. |
| return m_curr_pid; |
| } |
| else |
| { |
| // If we don't get a response for qProcessInfo, check if $qC gives us a result. |
| // $qC only returns a real process id on older debugserver and lldb-platform stubs. |
| // The gdb remote protocol documents $qC as returning the thread id, which newer |
| // debugserver and lldb-gdbserver stubs return correctly. |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qC", strlen("qC"), response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() == 'Q') |
| { |
| if (response.GetChar() == 'C') |
| { |
| m_curr_pid = response.GetHexMaxU32 (false, LLDB_INVALID_PROCESS_ID); |
| if (m_curr_pid != LLDB_INVALID_PROCESS_ID) |
| { |
| m_curr_pid_is_valid = eLazyBoolYes; |
| return m_curr_pid; |
| } |
| } |
| } |
| } |
| } |
| |
| return LLDB_INVALID_PROCESS_ID; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetLaunchSuccess (std::string &error_str) |
| { |
| error_str.clear(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qLaunchSuccess", strlen("qLaunchSuccess"), response, false) == PacketResult::Success) |
| { |
| 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 ("timed out waiting for app to launch"); |
| } |
| return false; |
| } |
| |
| int |
| 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 executable 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'); |
| 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, (int)i); |
| packet.PutBytesAsRawHex8 (arg, arg_len); |
| } |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success) |
| { |
| 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; |
| bool send_hex_encoding = false; |
| for (const char *p = name_equal_value; *p != '\0' && send_hex_encoding == false; ++p) |
| { |
| if (isprint(*p)) |
| { |
| switch (*p) |
| { |
| case '$': |
| case '#': |
| send_hex_encoding = true; |
| break; |
| default: |
| break; |
| } |
| } |
| else |
| { |
| // We have non printable characters, lets hex encode this... |
| send_hex_encoding = true; |
| } |
| } |
| |
| StringExtractorGDBRemote response; |
| if (send_hex_encoding) |
| { |
| if (m_supports_QEnvironmentHexEncoded) |
| { |
| packet.PutCString("QEnvironmentHexEncoded:"); |
| packet.PutBytesAsRawHex8 (name_equal_value, strlen(name_equal_value)); |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| if (response.IsUnsupportedResponse()) |
| m_supports_QEnvironmentHexEncoded = false; |
| } |
| } |
| |
| } |
| else if (m_supports_QEnvironment) |
| { |
| packet.Printf("QEnvironment:%s", name_equal_value); |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| if (response.IsUnsupportedResponse()) |
| m_supports_QEnvironment = false; |
| } |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SendLaunchArchPacket (char const *arch) |
| { |
| if (arch && arch[0]) |
| { |
| StreamString packet; |
| packet.Printf("QLaunchArch:%s", arch); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SendLaunchEventDataPacket (char const *data, bool *was_supported) |
| { |
| if (data && *data != '\0') |
| { |
| StreamString packet; |
| packet.Printf("QSetProcessEvent:%s", data); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| { |
| if (was_supported) |
| *was_supported = true; |
| return 0; |
| } |
| else if (response.IsUnsupportedResponse()) |
| { |
| if (was_supported) |
| *was_supported = false; |
| return -1; |
| } |
| else |
| { |
| uint8_t error = response.GetError(); |
| if (was_supported) |
| *was_supported = true; |
| 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(); |
| } |
| |
| const lldb_private::ArchSpec & |
| GDBRemoteCommunicationClient::GetProcessArchitecture () |
| { |
| if (m_qProcessInfo_is_valid == eLazyBoolCalculate) |
| GetCurrentProcessInfo (); |
| return m_process_arch; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetGDBServerVersion() |
| { |
| if (m_qGDBServerVersion_is_valid == eLazyBoolCalculate) |
| { |
| m_gdb_server_name.clear(); |
| m_gdb_server_version = 0; |
| m_qGDBServerVersion_is_valid = eLazyBoolNo; |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse ("qGDBServerVersion", response, false) == PacketResult::Success) |
| { |
| if (response.IsNormalResponse()) |
| { |
| std::string name; |
| std::string value; |
| bool success = false; |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("name") == 0) |
| { |
| success = true; |
| m_gdb_server_name.swap(value); |
| } |
| else if (name.compare("version") == 0) |
| { |
| size_t dot_pos = value.find('.'); |
| if (dot_pos != std::string::npos) |
| value[dot_pos] = '\0'; |
| const uint32_t version = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); |
| if (version != UINT32_MAX) |
| { |
| success = true; |
| m_gdb_server_version = version; |
| } |
| } |
| } |
| if (success) |
| m_qGDBServerVersion_is_valid = eLazyBoolYes; |
| } |
| } |
| } |
| return m_qGDBServerVersion_is_valid == eLazyBoolYes; |
| } |
| |
| const char * |
| GDBRemoteCommunicationClient::GetGDBServerProgramName() |
| { |
| if (GetGDBServerVersion()) |
| { |
| if (!m_gdb_server_name.empty()) |
| return m_gdb_server_name.c_str(); |
| } |
| return NULL; |
| } |
| |
| uint32_t |
| GDBRemoteCommunicationClient::GetGDBServerProgramVersion() |
| { |
| if (GetGDBServerVersion()) |
| return m_gdb_server_version; |
| return 0; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetHostInfo (bool force) |
| { |
| Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_PROCESS)); |
| |
| if (force || m_qHostInfo_is_valid == eLazyBoolCalculate) |
| { |
| m_qHostInfo_is_valid = eLazyBoolNo; |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse ("qHostInfo", response, false) == PacketResult::Success) |
| { |
| 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; |
| std::string distribution_id; |
| 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 ("distribution_id") == 0) |
| { |
| extractor.GetStringRef ().swap (value); |
| extractor.SetFilePos (0); |
| extractor.GetHexByteString (distribution_id); |
| ++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; |
| } |
| else if (name.compare("watchpoint_exceptions_received") == 0) |
| { |
| ++num_keys_decoded; |
| if (strcmp(value.c_str(),"before") == 0) |
| m_watchpoints_trigger_after_instruction = eLazyBoolNo; |
| else if (strcmp(value.c_str(),"after") == 0) |
| m_watchpoints_trigger_after_instruction = eLazyBoolYes; |
| else |
| --num_keys_decoded; |
| } |
| else if (name.compare("default_packet_timeout") == 0) |
| { |
| m_default_packet_timeout = Args::StringToUInt32(value.c_str(), 0); |
| if (m_default_packet_timeout > 0) |
| { |
| SetPacketTimeout(m_default_packet_timeout); |
| ++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 (!os_name.empty() && vendor_name.compare("apple") == 0 && os_name.find("darwin") == 0) |
| { |
| switch (m_host_arch.GetMachine()) |
| { |
| case llvm::Triple::arm64: |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| os_name = "ios"; |
| break; |
| default: |
| os_name = "macosx"; |
| break; |
| } |
| } |
| if (!vendor_name.empty()) |
| m_host_arch.GetTriple().setVendorName (llvm::StringRef (vendor_name)); |
| if (!os_name.empty()) |
| m_host_arch.GetTriple().setOSName (llvm::StringRef (os_name)); |
| |
| } |
| } |
| else |
| { |
| std::string triple; |
| triple += arch_name; |
| if (!vendor_name.empty() || !os_name.empty()) |
| { |
| 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()); |
| |
| llvm::Triple &host_triple = m_host_arch.GetTriple(); |
| if (host_triple.getVendor() == llvm::Triple::Apple && host_triple.getOS() == llvm::Triple::Darwin) |
| { |
| switch (m_host_arch.GetMachine()) |
| { |
| case llvm::Triple::arm64: |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| host_triple.setOS(llvm::Triple::IOS); |
| break; |
| default: |
| host_triple.setOS(llvm::Triple::MacOSX); |
| break; |
| } |
| } |
| 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()); |
| } |
| |
| if (log) |
| log->Printf ("GDBRemoteCommunicationClient::%s parsed host architecture as %s, triple as %s from triple text %s", __FUNCTION__, m_host_arch.GetArchitectureName () ? m_host_arch.GetArchitectureName () : "<null-arch-name>", m_host_arch.GetTriple ().getTriple ().c_str(), triple.c_str ()); |
| } |
| if (!distribution_id.empty ()) |
| m_host_arch.SetDistributionId (distribution_id.c_str ()); |
| } |
| } |
| } |
| 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;%" PRIx64, pid); |
| assert (packet_len < (int)sizeof(packet)); |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| 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; |
| } |
| |
| uint32_t |
| GDBRemoteCommunicationClient::GetHostDefaultPacketTimeout () |
| { |
| if (m_qHostInfo_is_valid == eLazyBoolCalculate) |
| GetHostInfo (); |
| return m_default_packet_timeout; |
| } |
| |
| addr_t |
| GDBRemoteCommunicationClient::AllocateMemory (size_t size, uint32_t permissions) |
| { |
| if (m_supports_alloc_dealloc_memory != eLazyBoolNo) |
| { |
| m_supports_alloc_dealloc_memory = eLazyBoolYes; |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, sizeof(packet), "_M%" PRIx64 ",%s%s%s", |
| (uint64_t)size, |
| permissions & lldb::ePermissionsReadable ? "r" : "", |
| permissions & lldb::ePermissionsWritable ? "w" : "", |
| permissions & lldb::ePermissionsExecutable ? "x" : ""); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsUnsupportedResponse()) |
| m_supports_alloc_dealloc_memory = eLazyBoolNo; |
| else if (!response.IsErrorResponse()) |
| return response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS); |
| } |
| else |
| { |
| m_supports_alloc_dealloc_memory = eLazyBoolNo; |
| } |
| } |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::DeallocateMemory (addr_t addr) |
| { |
| if (m_supports_alloc_dealloc_memory != eLazyBoolNo) |
| { |
| m_supports_alloc_dealloc_memory = eLazyBoolYes; |
| char packet[64]; |
| const int packet_len = ::snprintf(packet, sizeof(packet), "_m%" PRIx64, (uint64_t)addr); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsUnsupportedResponse()) |
| m_supports_alloc_dealloc_memory = eLazyBoolNo; |
| else if (response.IsOKResponse()) |
| return true; |
| } |
| else |
| { |
| m_supports_alloc_dealloc_memory = eLazyBoolNo; |
| } |
| } |
| return false; |
| } |
| |
| Error |
| GDBRemoteCommunicationClient::Detach (bool keep_stopped) |
| { |
| Error error; |
| |
| if (keep_stopped) |
| { |
| if (m_supports_detach_stay_stopped == eLazyBoolCalculate) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf(packet, sizeof(packet), "qSupportsDetachAndStayStopped:"); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| m_supports_detach_stay_stopped = eLazyBoolYes; |
| } |
| else |
| { |
| m_supports_detach_stay_stopped = eLazyBoolNo; |
| } |
| } |
| |
| if (m_supports_detach_stay_stopped == eLazyBoolNo) |
| { |
| error.SetErrorString("Stays stopped not supported by this target."); |
| return error; |
| } |
| else |
| { |
| StringExtractorGDBRemote response; |
| PacketResult packet_result = SendPacketAndWaitForResponse ("D1", 1, response, false); |
| if (packet_result != PacketResult::Success) |
| error.SetErrorString ("Sending extended disconnect packet failed."); |
| } |
| } |
| else |
| { |
| StringExtractorGDBRemote response; |
| PacketResult packet_result = SendPacketAndWaitForResponse ("D", 1, response, false); |
| if (packet_result != PacketResult::Success) |
| error.SetErrorString ("Sending disconnect packet failed."); |
| } |
| return error; |
| } |
| |
| Error |
| GDBRemoteCommunicationClient::GetMemoryRegionInfo (lldb::addr_t addr, |
| lldb_private::MemoryRegionInfo ®ion_info) |
| { |
| Error error; |
| region_info.Clear(); |
| |
| if (m_supports_memory_region_info != eLazyBoolNo) |
| { |
| m_supports_memory_region_info = eLazyBoolYes; |
| char packet[64]; |
| const int packet_len = ::snprintf(packet, sizeof(packet), "qMemoryRegionInfo:%" PRIx64, (uint64_t)addr); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| std::string name; |
| std::string value; |
| addr_t addr_value; |
| bool success = true; |
| bool saw_permissions = false; |
| while (success && response.GetNameColonValue(name, value)) |
| { |
| if (name.compare ("start") == 0) |
| { |
| addr_value = Args::StringToUInt64(value.c_str(), LLDB_INVALID_ADDRESS, 16, &success); |
| if (success) |
| region_info.GetRange().SetRangeBase(addr_value); |
| } |
| else if (name.compare ("size") == 0) |
| { |
| addr_value = Args::StringToUInt64(value.c_str(), 0, 16, &success); |
| if (success) |
| region_info.GetRange().SetByteSize (addr_value); |
| } |
| else if (name.compare ("permissions") == 0 && region_info.GetRange().IsValid()) |
| { |
| saw_permissions = true; |
| if (region_info.GetRange().Contains (addr)) |
| { |
| if (value.find('r') != std::string::npos) |
| region_info.SetReadable (MemoryRegionInfo::eYes); |
| else |
| region_info.SetReadable (MemoryRegionInfo::eNo); |
| |
| if (value.find('w') != std::string::npos) |
| region_info.SetWritable (MemoryRegionInfo::eYes); |
| else |
| region_info.SetWritable (MemoryRegionInfo::eNo); |
| |
| if (value.find('x') != std::string::npos) |
| region_info.SetExecutable (MemoryRegionInfo::eYes); |
| else |
| region_info.SetExecutable (MemoryRegionInfo::eNo); |
| } |
| else |
| { |
| // The reported region does not contain this address -- we're looking at an unmapped page |
| region_info.SetReadable (MemoryRegionInfo::eNo); |
| region_info.SetWritable (MemoryRegionInfo::eNo); |
| region_info.SetExecutable (MemoryRegionInfo::eNo); |
| } |
| } |
| else if (name.compare ("error") == 0) |
| { |
| StringExtractorGDBRemote name_extractor; |
| // Swap "value" over into "name_extractor" |
| name_extractor.GetStringRef().swap(value); |
| // Now convert the HEX bytes into a string value |
| name_extractor.GetHexByteString (value); |
| error.SetErrorString(value.c_str()); |
| } |
| } |
| |
| // We got a valid address range back but no permissions -- which means this is an unmapped page |
| if (region_info.GetRange().IsValid() && saw_permissions == false) |
| { |
| region_info.SetReadable (MemoryRegionInfo::eNo); |
| region_info.SetWritable (MemoryRegionInfo::eNo); |
| region_info.SetExecutable (MemoryRegionInfo::eNo); |
| } |
| } |
| else |
| { |
| m_supports_memory_region_info = eLazyBoolNo; |
| } |
| } |
| |
| if (m_supports_memory_region_info == eLazyBoolNo) |
| { |
| error.SetErrorString("qMemoryRegionInfo is not supported"); |
| } |
| if (error.Fail()) |
| region_info.Clear(); |
| return error; |
| |
| } |
| |
| Error |
| GDBRemoteCommunicationClient::GetWatchpointSupportInfo (uint32_t &num) |
| { |
| Error error; |
| |
| if (m_supports_watchpoint_support_info == eLazyBoolYes) |
| { |
| num = m_num_supported_hardware_watchpoints; |
| return error; |
| } |
| |
| // Set num to 0 first. |
| num = 0; |
| if (m_supports_watchpoint_support_info != eLazyBoolNo) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf(packet, sizeof(packet), "qWatchpointSupportInfo:"); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| m_supports_watchpoint_support_info = eLazyBoolYes; |
| std::string name; |
| std::string value; |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare ("num") == 0) |
| { |
| num = Args::StringToUInt32(value.c_str(), 0, 0); |
| m_num_supported_hardware_watchpoints = num; |
| } |
| } |
| } |
| else |
| { |
| m_supports_watchpoint_support_info = eLazyBoolNo; |
| } |
| } |
| |
| if (m_supports_watchpoint_support_info == eLazyBoolNo) |
| { |
| error.SetErrorString("qWatchpointSupportInfo is not supported"); |
| } |
| return error; |
| |
| } |
| |
| lldb_private::Error |
| GDBRemoteCommunicationClient::GetWatchpointSupportInfo (uint32_t &num, bool& after) |
| { |
| Error error(GetWatchpointSupportInfo(num)); |
| if (error.Success()) |
| error = GetWatchpointsTriggerAfterInstruction(after); |
| return error; |
| } |
| |
| lldb_private::Error |
| GDBRemoteCommunicationClient::GetWatchpointsTriggerAfterInstruction (bool &after) |
| { |
| Error error; |
| |
| // we assume watchpoints will happen after running the relevant opcode |
| // and we only want to override this behavior if we have explicitly |
| // received a qHostInfo telling us otherwise |
| if (m_qHostInfo_is_valid != eLazyBoolYes) |
| after = true; |
| else |
| after = (m_watchpoints_trigger_after_instruction != eLazyBoolNo); |
| return error; |
| } |
| |
| 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) == PacketResult::Success) |
| { |
| 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) == PacketResult::Success) |
| { |
| 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) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| } |
| return -1; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetWorkingDir (std::string &cwd) |
| { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse ("qGetWorkingDir", response, false) == PacketResult::Success) |
| { |
| if (response.IsUnsupportedResponse()) |
| return false; |
| if (response.IsErrorResponse()) |
| return false; |
| response.GetHexByteString (cwd); |
| return !cwd.empty(); |
| } |
| return false; |
| } |
| |
| 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) == PacketResult::Success) |
| { |
| 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 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| return -1; |
| } |
| |
| int |
| GDBRemoteCommunicationClient::SetDetachOnError (bool enable) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "QSetDetachOnError:%i", enable ? 1 : 0); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return 0; |
| uint8_t error = response.GetError(); |
| if (error) |
| return error; |
| } |
| return -1; |
| } |
| |
| |
| bool |
| GDBRemoteCommunicationClient::DecodeProcessInfoResponse (StringExtractorGDBRemote &response, ProcessInstanceInfo &process_info) |
| { |
| if (response.IsNormalResponse()) |
| { |
| std::string name; |
| std::string value; |
| StringExtractor extractor; |
| |
| uint32_t cpu = LLDB_INVALID_CPUTYPE; |
| uint32_t sub = 0; |
| std::string vendor; |
| std::string os_type; |
| |
| 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.SetUserID (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.SetGroupID (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 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.GetExecutableFile().SetFile (value.c_str(), false); |
| } |
| else if (name.compare("cputype") == 0) |
| { |
| cpu = Args::StringToUInt32 (value.c_str(), LLDB_INVALID_CPUTYPE, 16); |
| } |
| else if (name.compare("cpusubtype") == 0) |
| { |
| sub = Args::StringToUInt32 (value.c_str(), 0, 16); |
| } |
| else if (name.compare("vendor") == 0) |
| { |
| vendor = value; |
| } |
| else if (name.compare("ostype") == 0) |
| { |
| os_type = value; |
| } |
| } |
| |
| if (cpu != LLDB_INVALID_CPUTYPE && !vendor.empty() && !os_type.empty()) |
| { |
| if (vendor == "apple") |
| { |
| process_info.GetArchitecture().SetArchitecture (eArchTypeMachO, cpu, sub); |
| process_info.GetArchitecture().GetTriple().setVendorName (llvm::StringRef (vendor)); |
| process_info.GetArchitecture().GetTriple().setOSName (llvm::StringRef (os_type)); |
| } |
| } |
| |
| if (process_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) |
| return true; |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info) |
| { |
| process_info.Clear(); |
| |
| if (m_supports_qProcessInfoPID) |
| { |
| char packet[32]; |
| const int packet_len = ::snprintf (packet, sizeof (packet), "qProcessInfoPID:%" PRIu64, pid); |
| assert (packet_len < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| return DecodeProcessInfoResponse (response, process_info); |
| } |
| else |
| { |
| m_supports_qProcessInfoPID = false; |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetCurrentProcessInfo () |
| { |
| if (m_qProcessInfo_is_valid == eLazyBoolYes) |
| return true; |
| if (m_qProcessInfo_is_valid == eLazyBoolNo) |
| return false; |
| |
| GetHostInfo (); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse ("qProcessInfo", response, false) == PacketResult::Success) |
| { |
| 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; |
| uint32_t num_keys_decoded = 0; |
| lldb::pid_t pid = LLDB_INVALID_PROCESS_ID; |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("cputype") == 0) |
| { |
| cpu = Args::StringToUInt32 (value.c_str(), LLDB_INVALID_CPUTYPE, 16); |
| if (cpu != LLDB_INVALID_CPUTYPE) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("cpusubtype") == 0) |
| { |
| sub = Args::StringToUInt32 (value.c_str(), 0, 16); |
| if (sub != 0) |
| ++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) |
| { |
| if (value.compare("little") == 0 || |
| value.compare("big") == 0 || |
| value.compare("pdp") == 0) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("ptrsize") == 0) |
| { |
| pointer_byte_size = Args::StringToUInt32 (value.c_str(), 0, 16); |
| if (pointer_byte_size != 0) |
| ++num_keys_decoded; |
| } |
| else if (name.compare("pid") == 0) |
| { |
| pid = Args::StringToUInt64(value.c_str(), 0, 16); |
| if (pid != LLDB_INVALID_PROCESS_ID) |
| ++num_keys_decoded; |
| } |
| } |
| if (num_keys_decoded > 0) |
| m_qProcessInfo_is_valid = eLazyBoolYes; |
| if (pid != LLDB_INVALID_PROCESS_ID) |
| { |
| m_curr_pid_is_valid = eLazyBoolYes; |
| m_curr_pid = pid; |
| } |
| if (cpu != LLDB_INVALID_CPUTYPE && !os_name.empty() && !vendor_name.empty()) |
| { |
| m_process_arch.SetArchitecture (eArchTypeMachO, cpu, sub); |
| if (pointer_byte_size) |
| { |
| assert (pointer_byte_size == m_process_arch.GetAddressByteSize()); |
| } |
| m_process_arch.GetTriple().setOSName(llvm::StringRef (os_name)); |
| m_host_arch.GetTriple().setVendorName (llvm::StringRef (vendor_name)); |
| m_host_arch.GetTriple().setOSName (llvm::StringRef (os_name)); |
| } |
| return true; |
| } |
| } |
| else |
| { |
| m_qProcessInfo_is_valid = eLazyBoolNo; |
| } |
| |
| return false; |
| } |
| |
| |
| uint32_t |
| GDBRemoteCommunicationClient::FindProcesses (const ProcessInstanceInfoMatch &match_info, |
| ProcessInstanceInfoList &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:%" PRIu64 ";",match_info.GetProcessInfo().GetProcessID()); |
| if (match_info.GetProcessInfo().ParentProcessIDIsValid()) |
| packet.Printf("parent_pid:%" PRIu64 ";",match_info.GetProcessInfo().GetParentProcessID()); |
| if (match_info.GetProcessInfo().UserIDIsValid()) |
| packet.Printf("uid:%u;",match_info.GetProcessInfo().GetUserID()); |
| if (match_info.GetProcessInfo().GroupIDIsValid()) |
| packet.Printf("gid:%u;",match_info.GetProcessInfo().GetGroupID()); |
| 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) == PacketResult::Success) |
| { |
| do |
| { |
| ProcessInstanceInfo 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) == PacketResult::Success); |
| } |
| else |
| { |
| m_supports_qfProcessInfo = false; |
| return 0; |
| } |
| } |
| 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 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| 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; |
| } |
| } |
| else |
| { |
| m_supports_qUserName = false; |
| return false; |
| } |
| } |
| 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 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success) |
| { |
| 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; |
| } |
| } |
| else |
| { |
| m_supports_qGroupName = false; |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| void |
| GDBRemoteCommunicationClient::TestPacketSpeed (const uint32_t num_packets) |
| { |
| uint32_t i; |
| TimeValue start_time, end_time; |
| uint64_t total_time_nsec; |
| if (SendSpeedTestPacket (0, 0)) |
| { |
| static uint32_t g_send_sizes[] = { 0, 64, 128, 512, 1024 }; |
| static uint32_t g_recv_sizes[] = { 0, 64, 128, 512, 1024 }; //, 4*1024, 8*1024, 16*1024, 32*1024, 48*1024, 64*1024, 96*1024, 128*1024 }; |
| const size_t k_num_send_sizes = llvm::array_lengthof(g_send_sizes); |
| const size_t k_num_recv_sizes = llvm::array_lengthof(g_recv_sizes); |
| const uint64_t k_recv_amount = 4*1024*1024; // Receive 4MB |
| for (uint32_t send_idx = 0; send_idx < k_num_send_sizes; ++send_idx) |
| { |
| const uint32_t send_size = g_send_sizes[send_idx]; |
| for (uint32_t recv_idx = 0; recv_idx < k_num_recv_sizes; ++recv_idx) |
| { |
| const uint32_t recv_size = g_recv_sizes[recv_idx]; |
| StreamString packet; |
| packet.Printf ("qSpeedTest:response_size:%i;data:", recv_size); |
| uint32_t bytes_left = send_size; |
| while (bytes_left > 0) |
| { |
| if (bytes_left >= 26) |
| { |
| packet.PutCString("abcdefghijklmnopqrstuvwxyz"); |
| bytes_left -= 26; |
| } |
| else |
| { |
| packet.Printf ("%*.*s;", bytes_left, bytes_left, "abcdefghijklmnopqrstuvwxyz"); |
| bytes_left = 0; |
| } |
| } |
| |
| start_time = TimeValue::Now(); |
| if (recv_size == 0) |
| { |
| for (i=0; i<num_packets; ++i) |
| { |
| StringExtractorGDBRemote response; |
| SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false); |
| } |
| } |
| else |
| { |
| uint32_t bytes_read = 0; |
| while (bytes_read < k_recv_amount) |
| { |
| StringExtractorGDBRemote response; |
| SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false); |
| bytes_read += recv_size; |
| } |
| } |
| end_time = TimeValue::Now(); |
| total_time_nsec = end_time.GetAsNanoSecondsSinceJan1_1970() - start_time.GetAsNanoSecondsSinceJan1_1970(); |
| if (recv_size == 0) |
| { |
| float packets_per_second = (((float)num_packets)/(float)total_time_nsec) * (float)TimeValue::NanoSecPerSec; |
| printf ("%u qSpeedTest(send=%-7u, recv=%-7u) in %" PRIu64 ".%9.9" PRIu64 " sec for %f packets/sec.\n", |
| num_packets, |
| send_size, |
| recv_size, |
| total_time_nsec / TimeValue::NanoSecPerSec, |
| total_time_nsec % TimeValue::NanoSecPerSec, |
| packets_per_second); |
| } |
| else |
| { |
| float mb_second = ((((float)k_recv_amount)/(float)total_time_nsec) * (float)TimeValue::NanoSecPerSec) / (1024.0*1024.0); |
| printf ("%u qSpeedTest(send=%-7u, recv=%-7u) sent 4MB in %" PRIu64 ".%9.9" PRIu64 " sec for %f MB/sec.\n", |
| num_packets, |
| send_size, |
| recv_size, |
| total_time_nsec / TimeValue::NanoSecPerSec, |
| total_time_nsec % TimeValue::NanoSecPerSec, |
| mb_second); |
| } |
| } |
| } |
| } |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::SendSpeedTestPacket (uint32_t send_size, uint32_t recv_size) |
| { |
| StreamString packet; |
| packet.Printf ("qSpeedTest:response_size:%i;data:", recv_size); |
| uint32_t bytes_left = send_size; |
| while (bytes_left > 0) |
| { |
| if (bytes_left >= 26) |
| { |
| packet.PutCString("abcdefghijklmnopqrstuvwxyz"); |
| bytes_left -= 26; |
| } |
| else |
| { |
| packet.Printf ("%*.*s;", bytes_left, bytes_left, "abcdefghijklmnopqrstuvwxyz"); |
| bytes_left = 0; |
| } |
| } |
| |
| StringExtractorGDBRemote response; |
| return SendPacketAndWaitForResponse (packet.GetData(), packet.GetSize(), response, false) == PacketResult::Success; |
| } |
| |
| uint16_t |
| GDBRemoteCommunicationClient::LaunchGDBserverAndGetPort (lldb::pid_t &pid, const char *remote_accept_hostname) |
| { |
| pid = LLDB_INVALID_PROCESS_ID; |
| StringExtractorGDBRemote response; |
| StreamString stream; |
| stream.PutCString("qLaunchGDBServer;"); |
| std::string hostname; |
| if (remote_accept_hostname && remote_accept_hostname[0]) |
| hostname = remote_accept_hostname; |
| else |
| { |
| if (Host::GetHostname (hostname)) |
| { |
| // Make the GDB server we launch only accept connections from this host |
| stream.Printf("host:%s;", hostname.c_str()); |
| } |
| else |
| { |
| // Make the GDB server we launch accept connections from any host since we can't figure out the hostname |
| stream.Printf("host:*;"); |
| } |
| } |
| const char *packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| std::string name; |
| std::string value; |
| uint16_t port = 0; |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("port") == 0) |
| port = Args::StringToUInt32(value.c_str(), 0, 0); |
| else if (name.compare("pid") == 0) |
| pid = Args::StringToUInt64(value.c_str(), LLDB_INVALID_PROCESS_ID, 0); |
| } |
| return port; |
| } |
| return 0; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::KillSpawnedProcess (lldb::pid_t pid) |
| { |
| StreamString stream; |
| stream.Printf ("qKillSpawnedProcess:%" PRId64 , pid); |
| const char *packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| return true; |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::SetCurrentThread (uint64_t tid) |
| { |
| if (m_curr_tid == tid) |
| return true; |
| |
| char packet[32]; |
| int packet_len; |
| if (tid == UINT64_MAX) |
| packet_len = ::snprintf (packet, sizeof(packet), "Hg-1"); |
| else |
| packet_len = ::snprintf (packet, sizeof(packet), "Hg%" PRIx64, tid); |
| assert (packet_len + 1 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| { |
| m_curr_tid = tid; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::SetCurrentThreadForRun (uint64_t tid) |
| { |
| if (m_curr_tid_run == tid) |
| return true; |
| |
| char packet[32]; |
| int packet_len; |
| if (tid == UINT64_MAX) |
| packet_len = ::snprintf (packet, sizeof(packet), "Hc-1"); |
| else |
| packet_len = ::snprintf (packet, sizeof(packet), "Hc%" PRIx64, tid); |
| |
| assert (packet_len + 1 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsOKResponse()) |
| { |
| m_curr_tid_run = tid; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetStopReply (StringExtractorGDBRemote &response) |
| { |
| if (SendPacketAndWaitForResponse("?", 1, response, false) == PacketResult::Success) |
| return response.IsNormalResponse(); |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::GetThreadStopInfo (lldb::tid_t tid, StringExtractorGDBRemote &response) |
| { |
| if (m_supports_qThreadStopInfo) |
| { |
| char packet[256]; |
| int packet_len = ::snprintf(packet, sizeof(packet), "qThreadStopInfo%" PRIx64, tid); |
| assert (packet_len < (int)sizeof(packet)); |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.IsUnsupportedResponse()) |
| m_supports_qThreadStopInfo = false; |
| else if (response.IsNormalResponse()) |
| return true; |
| else |
| return false; |
| } |
| else |
| { |
| m_supports_qThreadStopInfo = false; |
| } |
| } |
| return false; |
| } |
| |
| |
| uint8_t |
| GDBRemoteCommunicationClient::SendGDBStoppointTypePacket (GDBStoppointType type, bool insert, addr_t addr, uint32_t length) |
| { |
| // Check if the stub is known not to support this breakpoint type |
| if (!SupportsGDBStoppointPacket(type)) |
| return UINT8_MAX; |
| // Construct the breakpoint packet |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, |
| sizeof(packet), |
| "%c%i,%" PRIx64 ",%x", |
| insert ? 'Z' : 'z', |
| type, |
| addr, |
| length); |
| // Check we haven't overwritten the end of the packet buffer |
| assert (packet_len + 1 < (int)sizeof(packet)); |
| StringExtractorGDBRemote response; |
| // Try to send the breakpoint packet, and check that it was correctly sent |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, true) == PacketResult::Success) |
| { |
| // Receive and OK packet when the breakpoint successfully placed |
| if (response.IsOKResponse()) |
| return 0; |
| |
| // Error while setting breakpoint, send back specific error |
| if (response.IsErrorResponse()) |
| return response.GetError(); |
| |
| // Empty packet informs us that breakpoint is not supported |
| if (response.IsUnsupportedResponse()) |
| { |
| // Disable this breakpoint type since it is unsupported |
| switch (type) |
| { |
| case eBreakpointSoftware: m_supports_z0 = false; break; |
| case eBreakpointHardware: m_supports_z1 = false; break; |
| case eWatchpointWrite: m_supports_z2 = false; break; |
| case eWatchpointRead: m_supports_z3 = false; break; |
| case eWatchpointReadWrite: m_supports_z4 = false; break; |
| } |
| } |
| } |
| // Signal generic failure |
| return UINT8_MAX; |
| } |
| |
| size_t |
| GDBRemoteCommunicationClient::GetCurrentThreadIDs (std::vector<lldb::tid_t> &thread_ids, |
| bool &sequence_mutex_unavailable) |
| { |
| Mutex::Locker locker; |
| thread_ids.clear(); |
| |
| if (GetSequenceMutex (locker, "ProcessGDBRemote::UpdateThreadList() failed due to not getting the sequence mutex")) |
| { |
| sequence_mutex_unavailable = false; |
| StringExtractorGDBRemote response; |
| |
| PacketResult packet_result; |
| for (packet_result = SendPacketAndWaitForResponseNoLock ("qfThreadInfo", strlen("qfThreadInfo"), response); |
| packet_result == PacketResult::Success && response.IsNormalResponse(); |
| packet_result = SendPacketAndWaitForResponseNoLock ("qsThreadInfo", strlen("qsThreadInfo"), response)) |
| { |
| char ch = response.GetChar(); |
| if (ch == 'l') |
| break; |
| if (ch == 'm') |
| { |
| do |
| { |
| tid_t tid = response.GetHexMaxU64(false, LLDB_INVALID_THREAD_ID); |
| |
| if (tid != LLDB_INVALID_THREAD_ID) |
| { |
| thread_ids.push_back (tid); |
| } |
| ch = response.GetChar(); // Skip the command separator |
| } while (ch == ','); // Make sure we got a comma separator |
| } |
| } |
| } |
| else |
| { |
| #if defined (LLDB_CONFIGURATION_DEBUG) |
| // assert(!"ProcessGDBRemote::UpdateThreadList() failed due to not getting the sequence mutex"); |
| #else |
| Log *log (ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet (GDBR_LOG_PROCESS | GDBR_LOG_PACKETS)); |
| if (log) |
| log->Printf("error: failed to get packet sequence mutex, not sending packet 'qfThreadInfo'"); |
| #endif |
| sequence_mutex_unavailable = true; |
| } |
| return thread_ids.size(); |
| } |
| |
| lldb::addr_t |
| GDBRemoteCommunicationClient::GetShlibInfoAddr() |
| { |
| if (!IsRunning()) |
| { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qShlibInfoAddr", ::strlen ("qShlibInfoAddr"), response, false) == PacketResult::Success) |
| { |
| if (response.IsNormalResponse()) |
| return response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS); |
| } |
| } |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| lldb_private::Error |
| GDBRemoteCommunicationClient::RunShellCommand (const char *command, // Shouldn't be NULL |
| const char *working_dir, // Pass NULL to use the current working directory |
| int *status_ptr, // Pass NULL if you don't want the process exit status |
| int *signo_ptr, // Pass NULL if you don't want the signal that caused the process to exit |
| std::string *command_output, // Pass NULL if you don't want the command output |
| uint32_t timeout_sec) // Timeout in seconds to wait for shell program to finish |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("qPlatform_shell:"); |
| stream.PutBytesAsRawHex8(command, strlen(command)); |
| stream.PutChar(','); |
| stream.PutHex32(timeout_sec); |
| if (working_dir && *working_dir) |
| { |
| stream.PutChar(','); |
| stream.PutBytesAsRawHex8(working_dir, strlen(working_dir)); |
| } |
| const char *packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| return Error("malformed reply"); |
| if (response.GetChar() != ',') |
| return Error("malformed reply"); |
| uint32_t exitcode = response.GetHexMaxU32(false, UINT32_MAX); |
| if (exitcode == UINT32_MAX) |
| return Error("unable to run remote process"); |
| else if (status_ptr) |
| *status_ptr = exitcode; |
| if (response.GetChar() != ',') |
| return Error("malformed reply"); |
| uint32_t signo = response.GetHexMaxU32(false, UINT32_MAX); |
| if (signo_ptr) |
| *signo_ptr = signo; |
| if (response.GetChar() != ',') |
| return Error("malformed reply"); |
| std::string output; |
| response.GetEscapedBinaryData(output); |
| if (command_output) |
| command_output->assign(output); |
| return Error(); |
| } |
| return Error("unable to send packet"); |
| } |
| |
| Error |
| GDBRemoteCommunicationClient::MakeDirectory (const char *path, |
| uint32_t file_permissions) |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("qPlatform_mkdir:"); |
| 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) == PacketResult::Success) |
| { |
| return Error(response.GetHexMaxU32(false, UINT32_MAX), eErrorTypePOSIX); |
| } |
| 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) == PacketResult::Success) |
| { |
| return Error(response.GetHexMaxU32(false, UINT32_MAX), eErrorTypePOSIX); |
| } |
| return Error(); |
| |
| } |
| |
| static uint64_t |
| ParseHostIOPacketResponse (StringExtractorGDBRemote &response, |
| uint64_t fail_result, |
| Error &error) |
| { |
| response.SetFilePos(0); |
| if (response.GetChar() != 'F') |
| return fail_result; |
| int32_t result = response.GetS32 (-2); |
| if (result == -2) |
| return fail_result; |
| if (response.GetChar() == ',') |
| { |
| int result_errno = response.GetS32 (-2); |
| if (result_errno != -2) |
| error.SetError(result_errno, eErrorTypePOSIX); |
| else |
| error.SetError(-1, eErrorTypeGeneric); |
| } |
| else |
| error.Clear(); |
| return result; |
| } |
| lldb::user_id_t |
| GDBRemoteCommunicationClient::OpenFile (const lldb_private::FileSpec& file_spec, |
| uint32_t flags, |
| mode_t mode, |
| Error &error) |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:open:"); |
| std::string path (file_spec.GetPath()); |
| if (path.empty()) |
| return UINT64_MAX; |
| stream.PutCStringAsRawHex8(path.c_str()); |
| stream.PutChar(','); |
| const uint32_t posix_open_flags = File::ConvertOpenOptionsForPOSIXOpen(flags); |
| stream.PutHex32(posix_open_flags); |
| stream.PutChar(','); |
| stream.PutHex32(mode); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| return ParseHostIOPacketResponse (response, UINT64_MAX, error); |
| } |
| return UINT64_MAX; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::CloseFile (lldb::user_id_t fd, |
| Error &error) |
| { |
| lldb_private::StreamString stream; |
| stream.Printf("vFile:close:%i", (int)fd); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| return ParseHostIOPacketResponse (response, -1, error) == 0; |
| } |
| return false; |
| } |
| |
| // Extension of host I/O packets to get the file size. |
| lldb::user_id_t |
| GDBRemoteCommunicationClient::GetFileSize (const lldb_private::FileSpec& file_spec) |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:size:"); |
| std::string path (file_spec.GetPath()); |
| stream.PutCStringAsRawHex8(path.c_str()); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| return UINT64_MAX; |
| uint32_t retcode = response.GetHexMaxU64(false, UINT64_MAX); |
| return retcode; |
| } |
| return UINT64_MAX; |
| } |
| |
| Error |
| GDBRemoteCommunicationClient::GetFilePermissions(const char *path, uint32_t &file_permissions) |
| { |
| Error error; |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:mode:"); |
| stream.PutCStringAsRawHex8(path); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| { |
| error.SetErrorStringWithFormat ("invalid response to '%s' packet", packet); |
| } |
| else |
| { |
| const uint32_t mode = response.GetS32(-1); |
| if (static_cast<int32_t>(mode) == -1) |
| { |
| 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.SetErrorStringWithFormat ("failed to send '%s' packet", packet); |
| } |
| return error; |
| } |
| |
| uint64_t |
| GDBRemoteCommunicationClient::ReadFile (lldb::user_id_t fd, |
| uint64_t offset, |
| void *dst, |
| uint64_t dst_len, |
| Error &error) |
| { |
| lldb_private::StreamString stream; |
| stream.Printf("vFile:pread:%i,%" PRId64 ",%" PRId64, (int)fd, dst_len, offset); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| return 0; |
| uint32_t retcode = response.GetHexMaxU32(false, UINT32_MAX); |
| if (retcode == UINT32_MAX) |
| return retcode; |
| const char next = (response.Peek() ? *response.Peek() : 0); |
| if (next == ',') |
| return 0; |
| if (next == ';') |
| { |
| response.GetChar(); // skip the semicolon |
| std::string buffer; |
| if (response.GetEscapedBinaryData(buffer)) |
| { |
| const uint64_t data_to_write = std::min<uint64_t>(dst_len, buffer.size()); |
| if (data_to_write > 0) |
| memcpy(dst, &buffer[0], data_to_write); |
| return data_to_write; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| uint64_t |
| GDBRemoteCommunicationClient::WriteFile (lldb::user_id_t fd, |
| uint64_t offset, |
| const void* src, |
| uint64_t src_len, |
| Error &error) |
| { |
| lldb_private::StreamGDBRemote stream; |
| stream.Printf("vFile:pwrite:%i,%" PRId64 ",", (int)fd, offset); |
| stream.PutEscapedBytes(src, src_len); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| { |
| error.SetErrorStringWithFormat("write file failed"); |
| return 0; |
| } |
| uint64_t bytes_written = response.GetU64(UINT64_MAX); |
| if (bytes_written == UINT64_MAX) |
| { |
| error.SetErrorToGenericError(); |
| if (response.GetChar() == ',') |
| { |
| int response_errno = response.GetS32(-1); |
| if (response_errno > 0) |
| error.SetError(response_errno, lldb::eErrorTypePOSIX); |
| } |
| return 0; |
| } |
| return bytes_written; |
| } |
| else |
| { |
| error.SetErrorString ("failed to send vFile:pwrite packet"); |
| } |
| 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) == PacketResult::Success) |
| { |
| 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) == PacketResult::Success) |
| { |
| 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) |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:exists:"); |
| std::string path (file_spec.GetPath()); |
| stream.PutCStringAsRawHex8(path.c_str()); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| return false; |
| if (response.GetChar() != ',') |
| return false; |
| bool retcode = (response.GetChar() != '0'); |
| return retcode; |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::CalculateMD5 (const lldb_private::FileSpec& file_spec, |
| uint64_t &high, |
| uint64_t &low) |
| { |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:MD5:"); |
| std::string path (file_spec.GetPath()); |
| stream.PutCStringAsRawHex8(path.c_str()); |
| const char* packet = stream.GetData(); |
| int packet_len = stream.GetSize(); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == PacketResult::Success) |
| { |
| if (response.GetChar() != 'F') |
| return false; |
| if (response.GetChar() != ',') |
| return false; |
| if (response.Peek() && *response.Peek() == 'x') |
| return false; |
| low = response.GetHexMaxU64(false, UINT64_MAX); |
| high = response.GetHexMaxU64(false, UINT64_MAX); |
| return true; |
| } |
| return false; |
| } |
| |
| bool |
| GDBRemoteCommunicationClient::AvoidGPackets (ProcessGDBRemote *process) |
| { |
| // Some targets have issues with g/G packets and we need to avoid using them |
| if (m_avoid_g_packets == eLazyBoolCalculate) |
| { |
| if (process) |
| { |
| m_avoid_g_packets = eLazyBoolNo; |
| const ArchSpec &arch = process->GetTarget().GetArchitecture(); |
| if (arch.IsValid() |
| && arch.GetTriple().getVendor() == llvm::Triple::Apple |
| && arch.GetTriple().getOS() == llvm::Triple::IOS |
| && arch.GetTriple().getArch() == llvm::Triple::arm64) |
| { |
| m_avoid_g_packets = eLazyBoolYes; |
| uint32_t gdb_server_version = GetGDBServerProgramVersion(); |
| if (gdb_server_version != 0) |
| { |
| const char *gdb_server_name = GetGDBServerProgramName(); |
| if (gdb_server_name && strcmp(gdb_server_name, "debugserver") == 0) |
| { |
| if (gdb_server_version >= 310) |
| m_avoid_g_packets = eLazyBoolNo; |
| } |
| } |
| } |
| } |
| } |
| return m_avoid_g_packets == eLazyBoolYes; |
| } |
| |
| 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) == PacketResult::Success; |
| } |
| } |
| 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) == PacketResult::Success; |
| } |
| } |
| 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) == PacketResult::Success) |
| { |
| 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 because 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) == PacketResult::Success) |
| { |
| 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; |
| } |
