| //===-- 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 <math.h> |
| #include <sys/stat.h> |
| |
| // C++ Includes |
| #include <numeric> |
| #include <sstream> |
| |
| // Other libraries and framework includes |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Core/StreamGDBRemote.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Host/HostInfo.h" |
| #include "lldb/Host/StringConvert.h" |
| #include "lldb/Host/TimeValue.h" |
| #include "lldb/Interpreter/Args.h" |
| #include "lldb/Symbol/Symbol.h" |
| #include "lldb/Target/MemoryRegionInfo.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/UnixSignals.h" |
| #include "lldb/Utility/LLDBAssert.h" |
| |
| // Project includes |
| #include "ProcessGDBRemote.h" |
| #include "ProcessGDBRemoteLog.h" |
| #include "Utility/StringExtractorGDBRemote.h" |
| #include "lldb/Host/Config.h" |
| |
| #include "llvm/ADT/StringSwitch.h" |
| |
| #if defined(HAVE_LIBCOMPRESSION) |
| #include <compression.h> |
| #endif |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::process_gdb_remote; |
| |
| //---------------------------------------------------------------------- |
| // GDBRemoteCommunicationClient constructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::GDBRemoteCommunicationClient() |
| : GDBRemoteClientBase("gdb-remote.client", "gdb-remote.client.rx_packet"), |
| 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_qXfer_features_read(eLazyBoolCalculate), |
| m_supports_augmented_libraries_svr4_read(eLazyBoolCalculate), |
| m_supports_jThreadExtendedInfo(eLazyBoolCalculate), |
| m_supports_jLoadedDynamicLibrariesInfos(eLazyBoolCalculate), |
| m_supports_jGetSharedCacheInfo(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_supports_qSymbol(true), |
| m_qSymbol_requests_done(false), m_supports_qModuleInfo(true), |
| m_supports_jThreadsInfo(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_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), |
| m_qSupported_response(), m_supported_async_json_packets_is_valid(false), |
| m_supported_async_json_packets_sp() {} |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| GDBRemoteCommunicationClient::~GDBRemoteCommunicationClient() { |
| if (IsConnected()) |
| Disconnect(); |
| } |
| |
| bool GDBRemoteCommunicationClient::HandshakeWithServer(Error *error_ptr) { |
| ResetDiscoverableSettings(false); |
| |
| // 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 = ReadPacket(response, timeout_usec, false); |
| |
| // The return value from QueryNoAckModeSupported() is true if the packet |
| // was sent and _any_ response (including UNIMPLEMENTED) was received), |
| // or false if no response was received. This quickly tells us if we have |
| // a live connection to a remote GDB server... |
| if (QueryNoAckModeSupported()) { |
| return true; |
| } else { |
| if (error_ptr) |
| error_ptr->SetErrorString("failed to get reply to handshake packet"); |
| } |
| } else { |
| if (error_ptr) |
| error_ptr->SetErrorString("failed to send the handshake ack"); |
| } |
| return false; |
| } |
| |
| bool GDBRemoteCommunicationClient::GetEchoSupported() { |
| if (m_supports_qEcho == eLazyBoolCalculate) { |
| GetRemoteQSupported(); |
| } |
| return m_supports_qEcho == eLazyBoolYes; |
| } |
| |
| 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; |
| } |
| |
| bool GDBRemoteCommunicationClient::GetQXferFeaturesReadSupported() { |
| if (m_supports_qXfer_features_read == eLazyBoolCalculate) { |
| GetRemoteQSupported(); |
| } |
| return m_supports_qXfer_features_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; |
| |
| // This is the first real packet that we'll send in a debug session and it |
| // may take a little |
| // longer than normal to receive a reply. Wait at least 6 seconds for a |
| // reply to this packet. |
| |
| const uint32_t minimum_timeout = 6; |
| uint32_t old_timeout = GetPacketTimeoutInMicroSeconds() / |
| lldb_private::TimeValue::MicroSecPerSec; |
| GDBRemoteCommunication::ScopedTimeout timeout( |
| *this, std::max(old_timeout, minimum_timeout)); |
| |
| 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(bool did_exec) { |
| if (did_exec == false) { |
| // Hard reset everything, this is when we first connect to a GDB server |
| 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_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_qXfer_features_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_supports_qSymbol = true; |
| m_qSymbol_requests_done = false; |
| m_supports_qModuleInfo = true; |
| m_host_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; |
| m_qSupported_response.clear(); |
| m_supported_async_json_packets_is_valid = false; |
| m_supported_async_json_packets_sp.reset(); |
| } |
| |
| // These flags should be reset when we first connect to a GDB server |
| // and when our inferior process execs |
| m_qProcessInfo_is_valid = eLazyBoolCalculate; |
| m_process_arch.Clear(); |
| } |
| |
| 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_supports_qXfer_features_read = eLazyBoolNo; |
| m_max_packet_size = UINT64_MAX; // It's supposed to always be there, but if |
| // not, we assume no limit |
| |
| // build the qSupported packet |
| std::vector<std::string> features = {"xmlRegisters=i386,arm,mips"}; |
| StreamString packet; |
| packet.PutCString("qSupported"); |
| for (uint32_t i = 0; i < features.size(); ++i) { |
| packet.PutCString(i == 0 ? ":" : ";"); |
| packet.PutCString(features[i].c_str()); |
| } |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet.GetData(), response, |
| /*send_async=*/false) == |
| PacketResult::Success) { |
| const char *response_cstr = response.GetStringRef().c_str(); |
| |
| // Hang on to the qSupported packet, so that platforms can do custom |
| // configuration of the transport before attaching/launching the |
| // process. |
| m_qSupported_response = response_cstr; |
| |
| 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; |
| if (::strstr(response_cstr, "qXfer:features:read+")) |
| m_supports_qXfer_features_read = eLazyBoolYes; |
| |
| // Look for a list of compressions in the features list e.g. |
| // qXfer:features:read+;PacketSize=20000;qEcho+;SupportedCompressions=zlib-deflate,lzma |
| const char *features_list = ::strstr(response_cstr, "qXfer:features:"); |
| if (features_list) { |
| const char *compressions = |
| ::strstr(features_list, "SupportedCompressions="); |
| if (compressions) { |
| std::vector<std::string> supported_compressions; |
| compressions += sizeof("SupportedCompressions=") - 1; |
| const char *end_of_compressions = strchr(compressions, ';'); |
| if (end_of_compressions == NULL) { |
| end_of_compressions = strchr(compressions, '\0'); |
| } |
| const char *current_compression = compressions; |
| while (current_compression < end_of_compressions) { |
| const char *next_compression_name = strchr(current_compression, ','); |
| const char *end_of_this_word = next_compression_name; |
| if (next_compression_name == NULL || |
| end_of_compressions < next_compression_name) { |
| end_of_this_word = end_of_compressions; |
| } |
| |
| if (end_of_this_word) { |
| if (end_of_this_word == current_compression) { |
| current_compression++; |
| } else { |
| std::string this_compression( |
| current_compression, end_of_this_word - current_compression); |
| supported_compressions.push_back(this_compression); |
| current_compression = end_of_this_word + 1; |
| } |
| } else { |
| supported_compressions.push_back(current_compression); |
| current_compression = end_of_compressions; |
| } |
| } |
| |
| if (supported_compressions.size() > 0) { |
| MaybeEnableCompression(supported_compressions); |
| } |
| } |
| } |
| |
| if (::strstr(response_cstr, "qEcho")) |
| m_supports_qEcho = eLazyBoolYes; |
| else |
| m_supports_qEcho = eLazyBoolNo; |
| |
| 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; |
| } |
| |
| GDBRemoteCommunication::PacketResult |
| GDBRemoteCommunicationClient::SendThreadSpecificPacketAndWaitForResponse( |
| lldb::tid_t tid, StreamString &&payload, StringExtractorGDBRemote &response, |
| bool send_async) { |
| Lock lock(*this, send_async); |
| if (!lock) { |
| if (Log *log = ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet( |
| GDBR_LOG_PROCESS | GDBR_LOG_PACKETS)) |
| log->Printf("GDBRemoteCommunicationClient::%s: Didn't get sequence mutex " |
| "for %s packet.", |
| __FUNCTION__, payload.GetString().c_str()); |
| return PacketResult::ErrorNoSequenceLock; |
| } |
| |
| if (GetThreadSuffixSupported()) |
| payload.Printf(";thread:%4.4" PRIx64 ";", tid); |
| else { |
| if (!SetCurrentThread(tid)) |
| return PacketResult::ErrorSendFailed; |
| } |
| |
| return SendPacketAndWaitForResponseNoLock(payload.GetString(), response); |
| } |
| |
| // 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) { |
| m_supports_p = eLazyBoolNo; |
| StreamString payload; |
| payload.PutCString("p0"); |
| StringExtractorGDBRemote response; |
| if (SendThreadSpecificPacketAndWaitForResponse(tid, std::move(payload), |
| response, false) == |
| PacketResult::Success && |
| response.IsNormalResponse()) { |
| m_supports_p = eLazyBoolYes; |
| } |
| } |
| return m_supports_p; |
| } |
| |
| StructuredData::ObjectSP GDBRemoteCommunicationClient::GetThreadsInfo() { |
| // Get information on all threads at one using the "jThreadsInfo" packet |
| StructuredData::ObjectSP object_sp; |
| |
| if (m_supports_jThreadsInfo) { |
| StringExtractorGDBRemote response; |
| response.SetResponseValidatorToJSON(); |
| if (SendPacketAndWaitForResponse("jThreadsInfo", response, false) == |
| PacketResult::Success) { |
| if (response.IsUnsupportedResponse()) { |
| m_supports_jThreadsInfo = false; |
| } else if (!response.Empty()) { |
| object_sp = StructuredData::ParseJSON(response.GetStringRef()); |
| } |
| } |
| } |
| return object_sp; |
| } |
| |
| 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::GetLoadedDynamicLibrariesInfosSupported() { |
| if (m_supports_jLoadedDynamicLibrariesInfos == eLazyBoolCalculate) { |
| StringExtractorGDBRemote response; |
| m_supports_jLoadedDynamicLibrariesInfos = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("jGetLoadedDynamicLibrariesInfos:", |
| response, |
| false) == PacketResult::Success) { |
| if (response.IsOKResponse()) { |
| m_supports_jLoadedDynamicLibrariesInfos = eLazyBoolYes; |
| } |
| } |
| } |
| return m_supports_jLoadedDynamicLibrariesInfos; |
| } |
| |
| bool GDBRemoteCommunicationClient::GetSharedCacheInfoSupported() { |
| if (m_supports_jGetSharedCacheInfo == eLazyBoolCalculate) { |
| StringExtractorGDBRemote response; |
| m_supports_jGetSharedCacheInfo = eLazyBoolNo; |
| if (SendPacketAndWaitForResponse("jGetSharedCacheInfo:", response, false) == |
| PacketResult::Success) { |
| if (response.IsOKResponse()) { |
| m_supports_jGetSharedCacheInfo = eLazyBoolYes; |
| } |
| } |
| } |
| return m_supports_jGetSharedCacheInfo; |
| } |
| |
| 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) { |
| Lock lock(*this, false); |
| if (!lock) { |
| 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 = SendPacketAndWaitForResponseNoLock( |
| payload_prefix_str + sizeDescriptor, this_response); |
| 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; |
| } |
| } |
| |
| lldb::pid_t GDBRemoteCommunicationClient::GetCurrentProcessID(bool allow_lazy) { |
| if (allow_lazy && m_curr_pid_is_valid == eLazyBoolYes) |
| return m_curr_pid; |
| |
| // First try to retrieve the pid via the qProcessInfo request. |
| GetCurrentProcessInfo(allow_lazy); |
| 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; |
| } |
| } |
| } |
| } |
| |
| // If we don't get a response for $qC, check if $qfThreadID gives us a |
| // result. |
| if (m_curr_pid == LLDB_INVALID_PROCESS_ID) { |
| std::vector<lldb::tid_t> thread_ids; |
| bool sequence_mutex_unavailable; |
| size_t size; |
| size = GetCurrentThreadIDs(thread_ids, sequence_mutex_unavailable); |
| if (size && sequence_mutex_unavailable == false) { |
| m_curr_pid = thread_ids.front(); |
| 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(false); |
| 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 '#': |
| 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()) { |
| llvm::StringRef name, value; |
| bool success = false; |
| while (response.GetNameColonValue(name, value)) { |
| if (name.equals("name")) { |
| success = true; |
| m_gdb_server_name = value; |
| } else if (name.equals("version")) { |
| llvm::StringRef major, minor; |
| std::tie(major, minor) = value.split('.'); |
| if (!major.getAsInteger(0, m_gdb_server_version)) |
| success = true; |
| } |
| } |
| if (success) |
| m_qGDBServerVersion_is_valid = eLazyBoolYes; |
| } |
| } |
| } |
| return m_qGDBServerVersion_is_valid == eLazyBoolYes; |
| } |
| |
| void GDBRemoteCommunicationClient::MaybeEnableCompression( |
| std::vector<std::string> supported_compressions) { |
| CompressionType avail_type = CompressionType::None; |
| std::string avail_name; |
| |
| #if defined(HAVE_LIBCOMPRESSION) |
| // libcompression is weak linked so test if compression_decode_buffer() is |
| // available |
| if (compression_decode_buffer != NULL && |
| avail_type == CompressionType::None) { |
| for (auto compression : supported_compressions) { |
| if (compression == "lzfse") { |
| avail_type = CompressionType::LZFSE; |
| avail_name = compression; |
| break; |
| } |
| } |
| } |
| #endif |
| |
| #if defined(HAVE_LIBCOMPRESSION) |
| // libcompression is weak linked so test if compression_decode_buffer() is |
| // available |
| if (compression_decode_buffer != NULL && |
| avail_type == CompressionType::None) { |
| for (auto compression : supported_compressions) { |
| if (compression == "zlib-deflate") { |
| avail_type = CompressionType::ZlibDeflate; |
| avail_name = compression; |
| break; |
| } |
| } |
| } |
| #endif |
| |
| #if defined(HAVE_LIBZ) |
| if (avail_type == CompressionType::None) { |
| for (auto compression : supported_compressions) { |
| if (compression == "zlib-deflate") { |
| avail_type = CompressionType::ZlibDeflate; |
| avail_name = compression; |
| break; |
| } |
| } |
| } |
| #endif |
| |
| #if defined(HAVE_LIBCOMPRESSION) |
| // libcompression is weak linked so test if compression_decode_buffer() is |
| // available |
| if (compression_decode_buffer != NULL && |
| avail_type == CompressionType::None) { |
| for (auto compression : supported_compressions) { |
| if (compression == "lz4") { |
| avail_type = CompressionType::LZ4; |
| avail_name = compression; |
| break; |
| } |
| } |
| } |
| #endif |
| |
| #if defined(HAVE_LIBCOMPRESSION) |
| // libcompression is weak linked so test if compression_decode_buffer() is |
| // available |
| if (compression_decode_buffer != NULL && |
| avail_type == CompressionType::None) { |
| for (auto compression : supported_compressions) { |
| if (compression == "lzma") { |
| avail_type = CompressionType::LZMA; |
| avail_name = compression; |
| break; |
| } |
| } |
| } |
| #endif |
| |
| if (avail_type != CompressionType::None) { |
| StringExtractorGDBRemote response; |
| std::string packet = "QEnableCompression:type:" + avail_name + ";"; |
| if (SendPacketAndWaitForResponse(packet.c_str(), response, false) != |
| PacketResult::Success) |
| return; |
| |
| if (response.IsOKResponse()) { |
| m_compression_type = avail_type; |
| } |
| } |
| } |
| |
| 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::GetDefaultThreadId(lldb::tid_t &tid) { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qC", response, false) != |
| PacketResult::Success) |
| return false; |
| |
| if (!response.IsNormalResponse()) |
| return false; |
| |
| if (response.GetChar() == 'Q' && response.GetChar() == 'C') |
| tid = response.GetHexMaxU32(true, -1); |
| |
| return true; |
| } |
| |
| 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()) { |
| llvm::StringRef name; |
| llvm::StringRef 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; |
| ByteOrder byte_order = eByteOrderInvalid; |
| uint32_t num_keys_decoded = 0; |
| while (response.GetNameColonValue(name, value)) { |
| if (name.equals("cputype")) { |
| // exception type in big endian hex |
| if (!value.getAsInteger(0, cpu)) |
| ++num_keys_decoded; |
| } else if (name.equals("cpusubtype")) { |
| // exception count in big endian hex |
| if (!value.getAsInteger(0, sub)) |
| ++num_keys_decoded; |
| } else if (name.equals("arch")) { |
| arch_name = value; |
| ++num_keys_decoded; |
| } else if (name.equals("triple")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(triple); |
| ++num_keys_decoded; |
| } else if (name.equals("distribution_id")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(distribution_id); |
| ++num_keys_decoded; |
| } else if (name.equals("os_build")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(m_os_build); |
| ++num_keys_decoded; |
| } else if (name.equals("hostname")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(m_hostname); |
| ++num_keys_decoded; |
| } else if (name.equals("os_kernel")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(m_os_kernel); |
| ++num_keys_decoded; |
| } else if (name.equals("ostype")) { |
| os_name = value; |
| ++num_keys_decoded; |
| } else if (name.equals("vendor")) { |
| vendor_name = value; |
| ++num_keys_decoded; |
| } else if (name.equals("endian")) { |
| byte_order = llvm::StringSwitch<lldb::ByteOrder>(value) |
| .Case("little", eByteOrderLittle) |
| .Case("big", eByteOrderBig) |
| .Case("pdp", eByteOrderPDP) |
| .Default(eByteOrderInvalid); |
| if (byte_order != eByteOrderInvalid) |
| ++num_keys_decoded; |
| } else if (name.equals("ptrsize")) { |
| if (!value.getAsInteger(0, pointer_byte_size)) |
| ++num_keys_decoded; |
| } else if (name.equals("os_version") || |
| name.equals( |
| "version")) // Older debugserver binaries used the |
| // "version" key instead of |
| // "os_version"... |
| { |
| Args::StringToVersion(value.str().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.equals("watchpoint_exceptions_received")) { |
| m_watchpoints_trigger_after_instruction = |
| llvm::StringSwitch<LazyBool>(value) |
| .Case("before", eLazyBoolNo) |
| .Case("after", eLazyBoolYes) |
| .Default(eLazyBoolCalculate); |
| if (m_watchpoints_trigger_after_instruction != eLazyBoolCalculate) |
| ++num_keys_decoded; |
| } else if (name.equals("default_packet_timeout")) { |
| if (!value.getAsInteger(0, m_default_packet_timeout)) { |
| 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 (!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::aarch64: |
| 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; |
| } |
| |
| int GDBRemoteCommunicationClient::SendStdinNotification(const char *data, |
| size_t data_len) { |
| StreamString packet; |
| packet.PutCString("I"); |
| packet.PutBytesAsRawHex8(data, data_len); |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, |
| false) == PacketResult::Success) { |
| return 0; |
| } |
| return response.GetError(); |
| } |
| |
| 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 && |
| response.IsOKResponse()) { |
| 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", 2, 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) { |
| llvm::StringRef name; |
| llvm::StringRef value; |
| addr_t addr_value = LLDB_INVALID_ADDRESS; |
| bool success = true; |
| bool saw_permissions = false; |
| while (success && response.GetNameColonValue(name, value)) { |
| if (name.equals("start")) { |
| if (!value.getAsInteger(16, addr_value)) |
| region_info.GetRange().SetRangeBase(addr_value); |
| } else if (name.equals("size")) { |
| if (!value.getAsInteger(16, addr_value)) |
| region_info.GetRange().SetByteSize(addr_value); |
| } else if (name.equals("permissions") && |
| region_info.GetRange().IsValid()) { |
| saw_permissions = true; |
| if (region_info.GetRange().Contains(addr)) { |
| if (value.find('r') != llvm::StringRef::npos) |
| region_info.SetReadable(MemoryRegionInfo::eYes); |
| else |
| region_info.SetReadable(MemoryRegionInfo::eNo); |
| |
| if (value.find('w') != llvm::StringRef::npos) |
| region_info.SetWritable(MemoryRegionInfo::eYes); |
| else |
| region_info.SetWritable(MemoryRegionInfo::eNo); |
| |
| if (value.find('x') != llvm::StringRef::npos) |
| region_info.SetExecutable(MemoryRegionInfo::eYes); |
| else |
| region_info.SetExecutable(MemoryRegionInfo::eNo); |
| |
| region_info.SetMapped(MemoryRegionInfo::eYes); |
| } 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); |
| region_info.SetMapped(MemoryRegionInfo::eNo); |
| } |
| } else if (name.equals("name")) { |
| StringExtractorGDBRemote name_extractor(value); |
| std::string name; |
| name_extractor.GetHexByteString(name); |
| region_info.SetName(name.c_str()); |
| } else if (name.equals("error")) { |
| StringExtractorGDBRemote error_extractor(value); |
| std::string error_string; |
| // Now convert the HEX bytes into a string value |
| error_extractor.GetHexByteString(error_string); |
| error.SetErrorString(error_string.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); |
| region_info.SetMapped(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; |
| llvm::StringRef name; |
| llvm::StringRef value; |
| while (response.GetNameColonValue(name, value)) { |
| if (name.equals("num")) { |
| value.getAsInteger(0, m_num_supported_hardware_watchpoints); |
| num = m_num_supported_hardware_watchpoints; |
| } |
| } |
| } 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, const ArchSpec &arch) { |
| Error error(GetWatchpointSupportInfo(num)); |
| if (error.Success()) |
| error = GetWatchpointsTriggerAfterInstruction(after, arch); |
| return error; |
| } |
| |
| lldb_private::Error |
| GDBRemoteCommunicationClient::GetWatchpointsTriggerAfterInstruction( |
| bool &after, const ArchSpec &arch) { |
| Error error; |
| llvm::Triple::ArchType atype = arch.GetMachine(); |
| |
| // 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) { |
| // On targets like MIPS, watchpoint exceptions are always generated |
| // before the instruction is executed. The connected target may not |
| // support qHostInfo or qWatchpointSupportInfo packets. |
| if (atype == llvm::Triple::mips || atype == llvm::Triple::mipsel || |
| atype == llvm::Triple::mips64 || atype == llvm::Triple::mips64el) |
| after = false; |
| else |
| after = true; |
| } else { |
| // For MIPS, set m_watchpoints_trigger_after_instruction to eLazyBoolNo |
| // if it is not calculated before. |
| if (m_watchpoints_trigger_after_instruction == eLazyBoolCalculate && |
| (atype == llvm::Triple::mips || atype == llvm::Triple::mipsel || |
| atype == llvm::Triple::mips64 || atype == llvm::Triple::mips64el)) |
| m_watchpoints_trigger_after_instruction = eLazyBoolNo; |
| |
| after = (m_watchpoints_trigger_after_instruction != eLazyBoolNo); |
| } |
| return error; |
| } |
| |
| int GDBRemoteCommunicationClient::SetSTDIN(const FileSpec &file_spec) { |
| if (file_spec) { |
| std::string path{file_spec.GetPath(false)}; |
| StreamString packet; |
| packet.PutCString("QSetSTDIN:"); |
| packet.PutCStringAsRawHex8(path.c_str()); |
| |
| 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(const FileSpec &file_spec) { |
| if (file_spec) { |
| std::string path{file_spec.GetPath(false)}; |
| StreamString packet; |
| packet.PutCString("QSetSTDOUT:"); |
| packet.PutCStringAsRawHex8(path.c_str()); |
| |
| 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(const FileSpec &file_spec) { |
| if (file_spec) { |
| std::string path{file_spec.GetPath(false)}; |
| StreamString packet; |
| packet.PutCString("QSetSTDERR:"); |
| packet.PutCStringAsRawHex8(path.c_str()); |
| |
| 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(FileSpec &working_dir) { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qGetWorkingDir", response, false) == |
| PacketResult::Success) { |
| if (response.IsUnsupportedResponse()) |
| return false; |
| if (response.IsErrorResponse()) |
| return false; |
| std::string cwd; |
| response.GetHexByteString(cwd); |
| working_dir.SetFile(cwd, false, GetHostArchitecture()); |
| return !cwd.empty(); |
| } |
| return false; |
| } |
| |
| int GDBRemoteCommunicationClient::SetWorkingDir(const FileSpec &working_dir) { |
| if (working_dir) { |
| std::string path{working_dir.GetPath(false)}; |
| StreamString packet; |
| packet.PutCString("QSetWorkingDir:"); |
| packet.PutCStringAsRawHex8(path.c_str()); |
| |
| 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()) { |
| llvm::StringRef name; |
| llvm::StringRef 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.equals("pid")) { |
| lldb::pid_t pid = LLDB_INVALID_PROCESS_ID; |
| value.getAsInteger(0, pid); |
| process_info.SetProcessID(pid); |
| } else if (name.equals("ppid")) { |
| lldb::pid_t pid = LLDB_INVALID_PROCESS_ID; |
| value.getAsInteger(0, pid); |
| process_info.SetParentProcessID(pid); |
| } else if (name.equals("uid")) { |
| uint32_t uid = UINT32_MAX; |
| value.getAsInteger(0, uid); |
| process_info.SetUserID(uid); |
| } else if (name.equals("euid")) { |
| uint32_t uid = UINT32_MAX; |
| value.getAsInteger(0, uid); |
| process_info.SetEffectiveGroupID(uid); |
| } else if (name.equals("gid")) { |
| uint32_t gid = UINT32_MAX; |
| value.getAsInteger(0, gid); |
| process_info.SetGroupID(gid); |
| } else if (name.equals("egid")) { |
| uint32_t gid = UINT32_MAX; |
| value.getAsInteger(0, gid); |
| process_info.SetEffectiveGroupID(gid); |
| } else if (name.equals("triple")) { |
| StringExtractor extractor(value); |
| std::string triple; |
| extractor.GetHexByteString(triple); |
| process_info.GetArchitecture().SetTriple(triple.c_str()); |
| } else if (name.equals("name")) { |
| StringExtractor extractor(value); |
| // The process name from ASCII hex bytes since we can't |
| // control the characters in a process name |
| std::string name; |
| extractor.GetHexByteString(name); |
| process_info.GetExecutableFile().SetFile(name.c_str(), false); |
| } else if (name.equals("cputype")) { |
| value.getAsInteger(0, cpu); |
| } else if (name.equals("cpusubtype")) { |
| value.getAsInteger(0, sub); |
| } else if (name.equals("vendor")) { |
| vendor = value; |
| } else if (name.equals("ostype")) { |
| 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(bool allow_lazy) { |
| Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_PROCESS | |
| GDBR_LOG_PACKETS)); |
| |
| if (allow_lazy) { |
| 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()) { |
| llvm::StringRef name; |
| llvm::StringRef value; |
| uint32_t cpu = LLDB_INVALID_CPUTYPE; |
| uint32_t sub = 0; |
| std::string arch_name; |
| std::string os_name; |
| std::string vendor_name; |
| std::string triple; |
| uint32_t pointer_byte_size = 0; |
| StringExtractor extractor; |
| ByteOrder byte_order = eByteOrderInvalid; |
| uint32_t num_keys_decoded = 0; |
| lldb::pid_t pid = LLDB_INVALID_PROCESS_ID; |
| while (response.GetNameColonValue(name, value)) { |
| if (name.equals("cputype")) { |
| if (!value.getAsInteger(16, cpu)) |
| ++num_keys_decoded; |
| } else if (name.equals("cpusubtype")) { |
| if (!value.getAsInteger(16, sub)) |
| ++num_keys_decoded; |
| } else if (name.equals("triple")) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(triple); |
| ++num_keys_decoded; |
| } else if (name.equals("ostype")) { |
| os_name = value; |
| ++num_keys_decoded; |
| } else if (name.equals("vendor")) { |
| vendor_name = value; |
| ++num_keys_decoded; |
| } else if (name.equals("endian")) { |
| byte_order = llvm::StringSwitch<lldb::ByteOrder>(value) |
| .Case("little", eByteOrderLittle) |
| .Case("big", eByteOrderBig) |
| .Case("pdp", eByteOrderPDP) |
| .Default(eByteOrderInvalid); |
| if (byte_order != eByteOrderInvalid) |
| ++num_keys_decoded; |
| } else if (name.equals("ptrsize")) { |
| if (!value.getAsInteger(16, pointer_byte_size)) |
| ++num_keys_decoded; |
| } else if (name.equals("pid")) { |
| if (!value.getAsInteger(16, pid)) |
| ++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; |
| } |
| |
| // Set the ArchSpec from the triple if we have it. |
| if (!triple.empty()) { |
| m_process_arch.SetTriple(triple.c_str()); |
| if (pointer_byte_size) { |
| assert(pointer_byte_size == m_process_arch.GetAddressByteSize()); |
| } |
| } else if (cpu != LLDB_INVALID_CPUTYPE && !os_name.empty() && |
| !vendor_name.empty()) { |
| llvm::Triple triple(llvm::Twine("-") + vendor_name + "-" + os_name); |
| |
| assert(triple.getObjectFormat() != llvm::Triple::UnknownObjectFormat); |
| switch (triple.getObjectFormat()) { |
| case llvm::Triple::MachO: |
| m_process_arch.SetArchitecture(eArchTypeMachO, cpu, sub); |
| break; |
| case llvm::Triple::ELF: |
| m_process_arch.SetArchitecture(eArchTypeELF, cpu, sub); |
| break; |
| case llvm::Triple::COFF: |
| m_process_arch.SetArchitecture(eArchTypeCOFF, cpu, sub); |
| break; |
| case llvm::Triple::UnknownObjectFormat: |
| if (log) |
| log->Printf("error: failed to determine target architecture"); |
| return false; |
| } |
| |
| if (pointer_byte_size) { |
| assert(pointer_byte_size == m_process_arch.GetAddressByteSize()); |
| } |
| if (byte_order != eByteOrderInvalid) { |
| assert(byte_order == m_process_arch.GetByteOrder()); |
| } |
| m_process_arch.GetTriple().setVendorName(llvm::StringRef(vendor_name)); |
| 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.PutCString(triple.getTriple().c_str()); |
| packet.PutChar(';'); |
| } |
| } |
| StringExtractorGDBRemote response; |
| // Increase timeout as the first qfProcessInfo packet takes a long time |
| // on Android. The value of 1min was arrived at empirically. |
| GDBRemoteCommunication::ScopedTimeout timeout(*this, 60); |
| 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; |
| } |
| |
| bool GDBRemoteCommunicationClient::SetNonStopMode(const bool enable) { |
| // Form non-stop packet request |
| char packet[32]; |
| const int packet_len = |
| ::snprintf(packet, sizeof(packet), "QNonStop:%1d", (int)enable); |
| assert(packet_len < (int)sizeof(packet)); |
| |
| StringExtractorGDBRemote response; |
| // Send to target |
| if (SendPacketAndWaitForResponse(packet, packet_len, response, false) == |
| PacketResult::Success) |
| if (response.IsOKResponse()) |
| return true; |
| |
| // Failed or not supported |
| return false; |
| } |
| |
| static void MakeSpeedTestPacket(StreamString &packet, uint32_t send_size, |
| uint32_t recv_size) { |
| packet.Clear(); |
| 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; |
| } |
| } |
| } |
| |
| template <typename T> T calculate_standard_deviation(const std::vector<T> &v) { |
| T sum = std::accumulate(std::begin(v), std::end(v), T(0)); |
| T mean = sum / (T)v.size(); |
| T accum = T(0); |
| std::for_each(std::begin(v), std::end(v), [&](const T d) { |
| T delta = d - mean; |
| accum += delta * delta; |
| }); |
| |
| T stdev = sqrt(accum / (v.size() - 1)); |
| return stdev; |
| } |
| |
| void GDBRemoteCommunicationClient::TestPacketSpeed(const uint32_t num_packets, |
| uint32_t max_send, |
| uint32_t max_recv, bool json, |
| Stream &strm) { |
| uint32_t i; |
| TimeValue start_time, end_time; |
| uint64_t total_time_nsec; |
| if (SendSpeedTestPacket(0, 0)) { |
| StreamString packet; |
| if (json) |
| strm.Printf("{ \"packet_speeds\" : {\n \"num_packets\" : %u,\n " |
| "\"results\" : [", |
| num_packets); |
| else |
| strm.Printf("Testing sending %u packets of various sizes:\n", |
| num_packets); |
| strm.Flush(); |
| |
| uint32_t result_idx = 0; |
| uint32_t send_size; |
| std::vector<float> packet_times; |
| |
| for (send_size = 0; send_size <= max_send; |
| send_size ? send_size *= 2 : send_size = 4) { |
| for (uint32_t recv_size = 0; recv_size <= max_recv; |
| recv_size ? recv_size *= 2 : recv_size = 4) { |
| MakeSpeedTestPacket(packet, send_size, recv_size); |
| |
| packet_times.clear(); |
| // Test how long it takes to send 'num_packets' packets |
| start_time = TimeValue::Now(); |
| for (i = 0; i < num_packets; ++i) { |
| TimeValue packet_start_time = TimeValue::Now(); |
| StringExtractorGDBRemote response; |
| SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), |
| response, false); |
| TimeValue packet_end_time = TimeValue::Now(); |
| uint64_t packet_time_nsec = |
| packet_end_time.GetAsNanoSecondsSinceJan1_1970() - |
| packet_start_time.GetAsNanoSecondsSinceJan1_1970(); |
| packet_times.push_back((float)packet_time_nsec); |
| } |
| end_time = TimeValue::Now(); |
| total_time_nsec = end_time.GetAsNanoSecondsSinceJan1_1970() - |
| start_time.GetAsNanoSecondsSinceJan1_1970(); |
| |
| float packets_per_second = |
| (((float)num_packets) / (float)total_time_nsec) * |
| (float)TimeValue::NanoSecPerSec; |
| float total_ms = |
| (float)total_time_nsec / (float)TimeValue::NanoSecPerMilliSec; |
| float average_ms_per_packet = total_ms / num_packets; |
| const float standard_deviation = |
| calculate_standard_deviation<float>(packet_times); |
| if (json) { |
| strm.Printf("%s\n {\"send_size\" : %6" PRIu32 |
| ", \"recv_size\" : %6" PRIu32 |
| ", \"total_time_nsec\" : %12" PRIu64 |
| ", \"standard_deviation_nsec\" : %9" PRIu64 " }", |
| result_idx > 0 ? "," : "", send_size, recv_size, |
| total_time_nsec, (uint64_t)standard_deviation); |
| ++result_idx; |
| } else { |
| strm.Printf( |
| "qSpeedTest(send=%-7u, recv=%-7u) in %" PRIu64 ".%9.9" PRIu64 |
| " sec for %9.2f packets/sec (%10.6f ms per packet) with standard " |
| "deviation of %10.6f ms\n", |
| send_size, recv_size, total_time_nsec / TimeValue::NanoSecPerSec, |
| total_time_nsec % TimeValue::NanoSecPerSec, packets_per_second, |
| average_ms_per_packet, |
| standard_deviation / (float)TimeValue::NanoSecPerMilliSec); |
| } |
| strm.Flush(); |
| } |
| } |
| |
| const uint64_t k_recv_amount = 4 * 1024 * 1024; // Receive amount in bytes |
| |
| const float k_recv_amount_mb = (float)k_recv_amount / (1024.0f * 1024.0f); |
| if (json) |
| strm.Printf("\n ]\n },\n \"download_speed\" : {\n \"byte_size\" " |
| ": %" PRIu64 ",\n \"results\" : [", |
| k_recv_amount); |
| else |
| strm.Printf("Testing receiving %2.1fMB of data using varying receive " |
| "packet sizes:\n", |
| k_recv_amount_mb); |
| strm.Flush(); |
| send_size = 0; |
| result_idx = 0; |
| for (uint32_t recv_size = 32; recv_size <= max_recv; recv_size *= 2) { |
| MakeSpeedTestPacket(packet, send_size, recv_size); |
| |
| // If we have a receive size, test how long it takes to receive 4MB of |
| // data |
| if (recv_size > 0) { |
| start_time = TimeValue::Now(); |
| uint32_t bytes_read = 0; |
| uint32_t packet_count = 0; |
| while (bytes_read < k_recv_amount) { |
| StringExtractorGDBRemote response; |
| SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), |
| response, false); |
| bytes_read += recv_size; |
| ++packet_count; |
| } |
| end_time = TimeValue::Now(); |
| total_time_nsec = end_time.GetAsNanoSecondsSinceJan1_1970() - |
| start_time.GetAsNanoSecondsSinceJan1_1970(); |
| float mb_second = ((((float)k_recv_amount) / (float)total_time_nsec) * |
| (float)TimeValue::NanoSecPerSec) / |
| (1024.0 * 1024.0); |
| float packets_per_second = |
| (((float)packet_count) / (float)total_time_nsec) * |
| (float)TimeValue::NanoSecPerSec; |
| float total_ms = |
| (float)total_time_nsec / (float)TimeValue::NanoSecPerMilliSec; |
| float average_ms_per_packet = total_ms / packet_count; |
| |
| if (json) { |
| strm.Printf("%s\n {\"send_size\" : %6" PRIu32 |
| ", \"recv_size\" : %6" PRIu32 |
| ", \"total_time_nsec\" : %12" PRIu64 " }", |
| result_idx > 0 ? "," : "", send_size, recv_size, |
| total_time_nsec); |
| ++result_idx; |
| } else { |
| strm.Printf("qSpeedTest(send=%-7u, recv=%-7u) %6u packets needed to " |
| "receive %2.1fMB in %" PRIu64 ".%9.9" PRIu64 |
| " sec for %f MB/sec for %9.2f packets/sec (%10.6f ms per " |
| "packet)\n", |
| send_size, recv_size, packet_count, k_recv_amount_mb, |
| total_time_nsec / TimeValue::NanoSecPerSec, |
| total_time_nsec % TimeValue::NanoSecPerSec, mb_second, |
| packets_per_second, average_ms_per_packet); |
| } |
| strm.Flush(); |
| } |
| } |
| if (json) |
| strm.Printf("\n ]\n }\n}\n"); |
| else |
| strm.EOL(); |
| } |
| } |
| |
| 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; |
| } |
| |
| bool GDBRemoteCommunicationClient::LaunchGDBServer( |
| const char *remote_accept_hostname, lldb::pid_t &pid, uint16_t &port, |
| std::string &socket_name) { |
| pid = LLDB_INVALID_PROCESS_ID; |
| port = 0; |
| socket_name.clear(); |
| |
| StringExtractorGDBRemote response; |
| StreamString stream; |
| stream.PutCString("qLaunchGDBServer;"); |
| std::string hostname; |
| if (remote_accept_hostname && remote_accept_hostname[0]) |
| hostname = remote_accept_hostname; |
| else { |
| if (HostInfo::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:*;"); |
| } |
| } |
| // give the process a few seconds to startup |
| GDBRemoteCommunication::ScopedTimeout timeout(*this, 10); |
| |
| if (SendPacketAndWaitForResponse(stream.GetString(), response, false) == |
| PacketResult::Success) { |
| llvm::StringRef name; |
| llvm::StringRef value; |
| while (response.GetNameColonValue(name, value)) { |
| if (name.equals("port")) |
| value.getAsInteger(0, port); |
| else if (name.equals("pid")) |
| value.getAsInteger(0, pid); |
| else if (name.compare("socket_name") == 0) { |
| StringExtractor extractor(value); |
| extractor.GetHexByteString(socket_name); |
| } |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| size_t GDBRemoteCommunicationClient::QueryGDBServer( |
| std::vector<std::pair<uint16_t, std::string>> &connection_urls) { |
| connection_urls.clear(); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qQueryGDBServer", response, false) != |
| PacketResult::Success) |
| return 0; |
| |
| StructuredData::ObjectSP data = |
| StructuredData::ParseJSON(response.GetStringRef()); |
| if (!data) |
| return 0; |
| |
| StructuredData::Array *array = data->GetAsArray(); |
| if (!array) |
| return 0; |
| |
| for (size_t i = 0, count = array->GetSize(); i < count; ++i) { |
| StructuredData::Dictionary *element = nullptr; |
| if (!array->GetItemAtIndexAsDictionary(i, element)) |
| continue; |
| |
| uint16_t port = 0; |
| if (StructuredData::ObjectSP port_osp = |
| element->GetValueForKey(llvm::StringRef("port"))) |
| port = port_osp->GetIntegerValue(0); |
| |
| std::string socket_name; |
| if (StructuredData::ObjectSP socket_name_osp = |
| element->GetValueForKey(llvm::StringRef("socket_name"))) |
| socket_name = socket_name_osp->GetStringValue(); |
| |
| if (port != 0 || !socket_name.empty()) |
| connection_urls.emplace_back(port, socket_name); |
| } |
| return connection_urls.size(); |
| } |
| |
| 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; |
| } |
| |
| /* |
| * Connected bare-iron target (like YAMON gdb-stub) may not have support for |
| * Hg packet. |
| * The reply from '?' packet could be as simple as 'S05'. There is no packet |
| * which can |
| * give us pid and/or tid. Assume pid=tid=1 in such cases. |
| */ |
| if (response.IsUnsupportedResponse() && IsConnected()) { |
| m_curr_tid = 1; |
| 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; |
| } |
| |
| /* |
| * Connected bare-iron target (like YAMON gdb-stub) may not have support for |
| * Hc packet. |
| * The reply from '?' packet could be as simple as 'S05'. There is no packet |
| * which can |
| * give us pid and/or tid. Assume pid=tid=1 in such cases. |
| */ |
| if (response.IsUnsupportedResponse() && IsConnected()) { |
| m_curr_tid_run = 1; |
| 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) { |
| Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS)); |
| if (log) |
| log->Printf("GDBRemoteCommunicationClient::%s() %s at addr = 0x%" PRIx64, |
| __FUNCTION__, insert ? "add" : "remove", addr); |
| |
| // 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; |
| // Make sure the response is either "OK", "EXX" where XX are two hex digits, |
| // or "" (unsupported) |
| response.SetResponseValidatorToOKErrorNotSupported(); |
| // 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; |
| case eStoppointInvalid: |
| return UINT8_MAX; |
| } |
| } |
| } |
| // Signal generic failure |
| return UINT8_MAX; |
| } |
| |
| size_t GDBRemoteCommunicationClient::GetCurrentThreadIDs( |
| std::vector<lldb::tid_t> &thread_ids, bool &sequence_mutex_unavailable) { |
| thread_ids.clear(); |
| |
| Lock lock(*this, false); |
| if (lock) { |
| sequence_mutex_unavailable = false; |
| StringExtractorGDBRemote response; |
| |
| PacketResult packet_result; |
| for (packet_result = |
| SendPacketAndWaitForResponseNoLock("qfThreadInfo", response); |
| packet_result == PacketResult::Success && response.IsNormalResponse(); |
| packet_result = |
| SendPacketAndWaitForResponseNoLock("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 |
| } |
| } |
| |
| /* |
| * Connected bare-iron target (like YAMON gdb-stub) may not have support for |
| * qProcessInfo, qC and qfThreadInfo packets. The reply from '?' packet |
| * could |
| * be as simple as 'S05'. There is no packet which can give us pid and/or |
| * tid. |
| * Assume pid=tid=1 in such cases. |
| */ |
| if (response.IsUnsupportedResponse() && thread_ids.size() == 0 && |
| IsConnected()) { |
| thread_ids.push_back(1); |
| } |
| } 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() { |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse("qShlibInfoAddr", response, false) != |
| PacketResult::Success || |
| !response.IsNormalResponse()) |
| return LLDB_INVALID_ADDRESS; |
| return response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS); |
| } |
| |
| lldb_private::Error GDBRemoteCommunicationClient::RunShellCommand( |
| const char *command, // Shouldn't be NULL |
| const FileSpec & |
| working_dir, // Pass empty FileSpec 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) { |
| std::string path{working_dir.GetPath(false)}; |
| stream.PutChar(','); |
| 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 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 FileSpec &file_spec, |
| uint32_t file_permissions) { |
| std::string path{file_spec.GetPath(false)}; |
| lldb_private::StreamString stream; |
| stream.PutCString("qPlatform_mkdir:"); |
| stream.PutHex32(file_permissions); |
| stream.PutChar(','); |
| 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) |
| return Error("failed to send '%s' packet", packet); |
| |
| if (response.GetChar() != 'F') |
| return Error("invalid response to '%s' packet", packet); |
| |
| return Error(response.GetU32(UINT32_MAX), eErrorTypePOSIX); |
| } |
| |
| Error GDBRemoteCommunicationClient::SetFilePermissions( |
| const FileSpec &file_spec, uint32_t file_permissions) { |
| std::string path{file_spec.GetPath(false)}; |
| lldb_private::StreamString stream; |
| stream.PutCString("qPlatform_chmod:"); |
| stream.PutHex32(file_permissions); |
| stream.PutChar(','); |
| 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) |
| return Error("failed to send '%s' packet", packet); |
| |
| if (response.GetChar() != 'F') |
| return Error("invalid response to '%s' packet", packet); |
| |
| return Error(response.GetU32(UINT32_MAX), eErrorTypePOSIX); |
| } |
| |
| 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) { |
| std::string path(file_spec.GetPath(false)); |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:open:"); |
| if (path.empty()) |
| return UINT64_MAX; |
| stream.PutCStringAsRawHex8(path.c_str()); |
| stream.PutChar(','); |
| stream.PutHex32(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) { |
| std::string path(file_spec.GetPath(false)); |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:size:"); |
| 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 FileSpec &file_spec, uint32_t &file_permissions) { |
| std::string path{file_spec.GetPath(false)}; |
| Error error; |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:mode:"); |
| 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') { |
| 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 FileSpec &src, |
| const FileSpec &dst) { |
| std::string src_path{src.GetPath(false)}, dst_path{dst.GetPath(false)}; |
| 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_path.c_str()); |
| stream.PutChar(','); |
| stream.PutCStringAsRawHex8(src_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') { |
| 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 FileSpec &file_spec) { |
| std::string path{file_spec.GetPath(false)}; |
| 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.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') { |
| 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) { |
| std::string path(file_spec.GetPath(false)); |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:exists:"); |
| 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) { |
| std::string path(file_spec.GetPath(false)); |
| lldb_private::StreamString stream; |
| stream.PutCString("vFile:MD5:"); |
| 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::aarch64) { |
| 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; |
| } |
| |
| DataBufferSP GDBRemoteCommunicationClient::ReadRegister(lldb::tid_t tid, |
| uint32_t reg) { |
| StreamString payload; |
| payload.Printf("p%x", reg); |
| StringExtractorGDBRemote response; |
| if (SendThreadSpecificPacketAndWaitForResponse( |
| tid, std::move(payload), response, false) != PacketResult::Success || |
| !response.IsNormalResponse()) |
| return nullptr; |
| |
| DataBufferSP buffer_sp( |
| new DataBufferHeap(response.GetStringRef().size() / 2, 0)); |
| response.GetHexBytes(buffer_sp->GetData(), '\xcc'); |
| return buffer_sp; |
| } |
| |
| DataBufferSP GDBRemoteCommunicationClient::ReadAllRegisters(lldb::tid_t tid) { |
| StreamString payload; |
| payload.PutChar('g'); |
| StringExtractorGDBRemote response; |
| if (SendThreadSpecificPacketAndWaitForResponse( |
| tid, std::move(payload), response, false) != PacketResult::Success || |
| !response.IsNormalResponse()) |
| return nullptr; |
| |
| DataBufferSP buffer_sp( |
| new DataBufferHeap(response.GetStringRef().size() / 2, 0)); |
| response.GetHexBytes(buffer_sp->GetData(), '\xcc'); |
| return buffer_sp; |
| } |
| |
| bool GDBRemoteCommunicationClient::WriteRegister(lldb::tid_t tid, |
| uint32_t reg_num, |
| llvm::ArrayRef<uint8_t> data) { |
| StreamString payload; |
| payload.Printf("P%x=", reg_num); |
| payload.PutBytesAsRawHex8(data.data(), data.size(), |
| endian::InlHostByteOrder(), |
| endian::InlHostByteOrder()); |
| StringExtractorGDBRemote response; |
| return SendThreadSpecificPacketAndWaitForResponse(tid, std::move(payload), |
| response, false) == |
| PacketResult::Success && |
| response.IsOKResponse(); |
| } |
| |
| bool GDBRemoteCommunicationClient::WriteAllRegisters( |
| lldb::tid_t tid, llvm::ArrayRef<uint8_t> data) { |
| StreamString payload; |
| payload.PutChar('G'); |
| payload.PutBytesAsRawHex8(data.data(), data.size(), |
| endian::InlHostByteOrder(), |
| endian::InlHostByteOrder()); |
| StringExtractorGDBRemote response; |
| return SendThreadSpecificPacketAndWaitForResponse(tid, std::move(payload), |
| response, false) == |
| PacketResult::Success && |
| response.IsOKResponse(); |
| } |
| |
| 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; |
| StreamString payload; |
| payload.PutCString("QSaveRegisterState"); |
| StringExtractorGDBRemote response; |
| if (SendThreadSpecificPacketAndWaitForResponse( |
| tid, std::move(payload), response, false) != PacketResult::Success) |
| return false; |
| |
| if (response.IsUnsupportedResponse()) |
| m_supports_QSaveRegisterState = eLazyBoolNo; |
| |
| const uint32_t response_save_id = response.GetU32(0); |
| if (response_save_id == 0) |
| return false; |
| |
| save_id = response_save_id; |
| return true; |
| } |
| |
| 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; |
| |
| StreamString payload; |
| payload.Printf("QRestoreRegisterState:%u", save_id); |
| StringExtractorGDBRemote response; |
| if (SendThreadSpecificPacketAndWaitForResponse( |
| tid, std::move(payload), response, false) != PacketResult::Success) |
| return false; |
| |
| if (response.IsOKResponse()) |
| return true; |
| |
| if (response.IsUnsupportedResponse()) |
| m_supports_QSaveRegisterState = eLazyBoolNo; |
| return false; |
| } |
| |
| bool GDBRemoteCommunicationClient::SyncThreadState(lldb::tid_t tid) { |
| if (!GetSyncThreadStateSupported()) |
| return false; |
| |
| StreamString packet; |
| StringExtractorGDBRemote response; |
| packet.Printf("QSyncThreadState:%4.4" PRIx64 ";", tid); |
| return SendPacketAndWaitForResponse(packet.GetString(), response, false) == |
| GDBRemoteCommunication::PacketResult::Success && |
| response.IsOKResponse(); |
| } |
| |
| bool GDBRemoteCommunicationClient::GetModuleInfo( |
| const FileSpec &module_file_spec, const lldb_private::ArchSpec &arch_spec, |
| ModuleSpec &module_spec) { |
| if (!m_supports_qModuleInfo) |
| return false; |
| |
| std::string module_path = module_file_spec.GetPath(false); |
| if (module_path.empty()) |
| return false; |
| |
| StreamString packet; |
| packet.PutCString("qModuleInfo:"); |
| packet.PutCStringAsRawHex8(module_path.c_str()); |
| packet.PutCString(";"); |
| const auto &triple = arch_spec.GetTriple().getTriple(); |
| packet.PutCStringAsRawHex8(triple.c_str()); |
| |
| StringExtractorGDBRemote response; |
| if (SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, |
| false) != PacketResult::Success) |
| return false; |
| |
| if (response.IsErrorResponse()) |
| return false; |
| |
| if (response.IsUnsupportedResponse()) { |
| m_supports_qModuleInfo = false; |
| return false; |
| } |
| |
| llvm::StringRef name; |
| llvm::StringRef value; |
| |
| module_spec.Clear(); |
| module_spec.GetFileSpec() = module_file_spec; |
| |
| while (response.GetNameColonValue(name, value)) { |
| if (name == "uuid" || name == "md5") { |
| StringExtractor extractor(value); |
| std::string uuid; |
| extractor.GetHexByteString(uuid); |
| module_spec.GetUUID().SetFromCString(uuid.c_str(), uuid.size() / 2); |
| } else if (name == "triple") { |
| StringExtractor extractor(value); |
| std::string triple; |
| extractor.GetHexByteString(triple); |
| module_spec.GetArchitecture().SetTriple(triple.c_str()); |
| } else if (name == "file_offset") { |
| uint64_t ival = 0; |
| if (!value.getAsInteger(16, ival)) |
| module_spec.SetObjectOffset(ival); |
| } else if (name == "file_size") { |
| uint64_t ival = 0; |
| if (!value.getAsInteger(16, ival)) |
| module_spec.SetObjectSize(ival); |
| } else if (name == "file_path") { |
| StringExtractor extractor(value); |
| std::string path; |
| extractor.GetHexByteString(path); |
| module_spec.GetFileSpec() = FileSpec(path.c_str(), false, arch_spec); |
| } |
| } |
| |
| return true; |
| } |
| |
| // query the target remote for extended information using the qXfer packet |
| // |
| // example: object='features', annex='target.xml', out=<xml output> |
| // return: 'true' on success |
| // 'false' on failure (err set) |
| bool GDBRemoteCommunicationClient::ReadExtFeature( |
| const lldb_private::ConstString object, |
| const lldb_private::ConstString annex, std::string &out, |
| lldb_private::Error &err) { |
| |
| std::stringstream output; |
| StringExtractorGDBRemote chunk; |
| |
| uint64_t size = GetRemoteMaxPacketSize(); |
| if (size == 0) |
| size = 0x1000; |
| size = size - 1; // Leave space for the 'm' or 'l' character in the response |
| int offset = 0; |
| bool active = true; |
| |
| // loop until all data has been read |
| while (active) { |
| |
| // send query extended feature packet |
| std::stringstream packet; |
| packet << "qXfer:" << object.AsCString("") |
| << ":read:" << annex.AsCString("") << ":" << std::hex << offset |
| << "," << std::hex << size; |
| |
| GDBRemoteCommunication::PacketResult res = |
| SendPacketAndWaitForResponse(packet.str().c_str(), chunk, false); |
| |
| if (res != GDBRemoteCommunication::PacketResult::Success) { |
| err.SetErrorString("Error sending $qXfer packet"); |
| return false; |
| } |
| |
| const std::string &str = chunk.GetStringRef(); |
| if (str.length() == 0) { |
| // should have some data in chunk |
| err.SetErrorString("Empty response from $qXfer packet"); |
| return false; |
| } |
| |
| // check packet code |
| switch (str[0]) { |
| // last chunk |
| case ('l'): |
| active = false; |
| LLVM_FALLTHROUGH; |
| |
| // more chunks |
| case ('m'): |
| if (str.length() > 1) |
| output << &str[1]; |
| offset += size; |
| break; |
| |
| // unknown chunk |
| default: |
| err.SetErrorString("Invalid continuation code from $qXfer packet"); |
| return false; |
| } |
| } |
| |
| out = output.str(); |
| err.Success(); |
| return true; |
| } |
| |
| // Notify the target that gdb is prepared to serve symbol lookup requests. |
| // packet: "qSymbol::" |
| // reply: |
| // OK The target does not need to look up any (more) symbols. |
| // qSymbol:<sym_name> The target requests the value of symbol sym_name (hex |
| // encoded). |
| // LLDB may provide the value by sending another qSymbol |
| // packet |
| // in the form of"qSymbol:<sym_value>:<sym_name>". |
| // |
| // Three examples: |
| // |
| // lldb sends: qSymbol:: |
| // lldb receives: OK |
| // Remote gdb stub does not need to know the addresses of any symbols, lldb |
| // does not |
| // need to ask again in this session. |
| // |
| // lldb sends: qSymbol:: |
| // lldb receives: qSymbol:64697370617463685f71756575655f6f666673657473 |
| // lldb sends: qSymbol::64697370617463685f71756575655f6f666673657473 |
| // lldb receives: OK |
| // Remote gdb stub asks for address of 'dispatch_queue_offsets'. lldb does |
| // not know |
| // the address at this time. lldb needs to send qSymbol:: again when it has |
| // more |
| // solibs loaded. |
| // |
| // lldb sends: qSymbol:: |
| // lldb receives: qSymbol:64697370617463685f71756575655f6f666673657473 |
| // lldb sends: qSymbol:2bc97554:64697370617463685f71756575655f6f666673657473 |
| // lldb receives: OK |
| // Remote gdb stub asks for address of 'dispatch_queue_offsets'. lldb says |
| // that it |
| // is at address 0x2bc97554. Remote gdb stub sends 'OK' indicating that it |
| // does not |
| // need any more symbols. lldb does not need to ask again in this session. |
| |
| void GDBRemoteCommunicationClient::ServeSymbolLookups( |
| lldb_private::Process *process) { |
| // Set to true once we've resolved a symbol to an address for the remote stub. |
| // If we get an 'OK' response after this, the remote stub doesn't need any |
| // more |
| // symbols and we can stop asking. |
| bool symbol_response_provided = false; |
| |
| // Is this the initial qSymbol:: packet? |
| bool first_qsymbol_query = true; |
| |
| if (m_supports_qSymbol && m_qSymbol_requests_done == false) { |
| Lock lock(*this, false); |
| if (lock) { |
| StreamString packet; |
| packet.PutCString("qSymbol::"); |
| StringExtractorGDBRemote response; |
| while (SendPacketAndWaitForResponseNoLock(packet.GetString(), response) == |
| PacketResult::Success) { |
| if (response.IsOKResponse()) { |
| if (symbol_response_provided || first_qsymbol_query) { |
| m_qSymbol_requests_done = true; |
| } |
| |
| // We are done serving symbols requests |
| return; |
| } |
| first_qsymbol_query = false; |
| |
| if (response.IsUnsupportedResponse()) { |
| // qSymbol is not supported by the current GDB server we are connected |
| // to |
| m_supports_qSymbol = false; |
| return; |
| } else { |
| llvm::StringRef response_str(response.GetStringRef()); |
| if (response_str.startswith("qSymbol:")) { |
| response.SetFilePos(strlen("qSymbol:")); |
| std::string symbol_name; |
| if (response.GetHexByteString(symbol_name)) { |
| if (symbol_name.empty()) |
| return; |
| |
| addr_t symbol_load_addr = LLDB_INVALID_ADDRESS; |
| lldb_private::SymbolContextList sc_list; |
| if (process->GetTarget().GetImages().FindSymbolsWithNameAndType( |
| ConstString(symbol_name), eSymbolTypeAny, sc_list)) { |
| const size_t num_scs = sc_list.GetSize(); |
| for (size_t sc_idx = 0; |
| sc_idx < num_scs && |
| symbol_load_addr == LLDB_INVALID_ADDRESS; |
| ++sc_idx) { |
| SymbolContext sc; |
| if (sc_list.GetContextAtIndex(sc_idx, sc)) { |
| if (sc.symbol) { |
| switch (sc.symbol->GetType()) { |
| case eSymbolTypeInvalid: |
| case eSymbolTypeAbsolute: |
| case eSymbolTypeUndefined: |
| case eSymbolTypeSourceFile: |
| case eSymbolTypeHeaderFile: |
| case eSymbolTypeObjectFile: |
| case eSymbolTypeCommonBlock: |
| case eSymbolTypeBlock: |
| case eSymbolTypeLocal: |
| case eSymbolTypeParam: |
| case eSymbolTypeVariable: |
| case eSymbolTypeVariableType: |
| case eSymbolTypeLineEntry: |
| case eSymbolTypeLineHeader: |
| case eSymbolTypeScopeBegin: |
| case eSymbolTypeScopeEnd: |
| case eSymbolTypeAdditional: |
| case eSymbolTypeCompiler: |
| case eSymbolTypeInstrumentation: |
| case eSymbolTypeTrampoline: |
| break; |
| |
| case eSymbolTypeCode: |
| case eSymbolTypeResolver: |
| case eSymbolTypeData: |
| case eSymbolTypeRuntime: |
| case eSymbolTypeException: |
| case eSymbolTypeObjCClass: |
| case eSymbolTypeObjCMetaClass: |
| case eSymbolTypeObjCIVar: |
| case eSymbolTypeReExported: |
| symbol_load_addr = |
| sc.symbol->GetLoadAddress(&process->GetTarget()); |
| break; |
| } |
| } |
| } |
| } |
| } |
| // This is the normal path where our symbol lookup was successful |
| // and we want |
| // to send a packet with the new symbol value and see if another |
| // lookup needs to be |
| // done. |
| |
| // Change "packet" to contain the requested symbol value and name |
| packet.Clear(); |
| packet.PutCString("qSymbol:"); |
| if (symbol_load_addr != LLDB_INVALID_ADDRESS) { |
| packet.Printf("%" PRIx64, symbol_load_addr); |
| symbol_response_provided = true; |
| } else { |
| symbol_response_provided = false; |
| } |
| packet.PutCString(":"); |
| packet.PutBytesAsRawHex8(symbol_name.data(), symbol_name.size()); |
| continue; // go back to the while loop and send "packet" and wait |
| // for another response |
| } |
| } |
| } |
| } |
| // If we make it here, the symbol request packet response wasn't valid or |
| // our symbol lookup failed so we must abort |
| return; |
| |
| } else if (Log *log = ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet( |
| GDBR_LOG_PROCESS | GDBR_LOG_PACKETS)) { |
| log->Printf( |
| "GDBRemoteCommunicationClient::%s: Didn't get sequence mutex.", |
| __FUNCTION__); |
| } |
| } |
| } |
| |
| StructuredData::Array * |
| GDBRemoteCommunicationClient::GetSupportedStructuredDataPlugins() { |
| if (!m_supported_async_json_packets_is_valid) { |
| // Query the server for the array of supported asynchronous JSON |
| // packets. |
| m_supported_async_json_packets_is_valid = true; |
| |
| Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| |
| // Poll it now. |
| StringExtractorGDBRemote response; |
| const bool send_async = false; |
| if (SendPacketAndWaitForResponse("qStructuredDataPlugins", response, |
| send_async) == PacketResult::Success) { |
| m_supported_async_json_packets_sp = |
| StructuredData::ParseJSON(response.GetStringRef()); |
| if (m_supported_async_json_packets_sp && |
| !m_supported_async_json_packets_sp->GetAsArray()) { |
| // We were returned something other than a JSON array. This |
| // is invalid. Clear it out. |
| if (log) |
| log->Printf("GDBRemoteCommunicationClient::%s(): " |
| "QSupportedAsyncJSONPackets returned invalid " |
| "result: %s", |
| __FUNCTION__, response.GetStringRef().c_str()); |
| m_supported_async_json_packets_sp.reset(); |
| } |
| } else { |
| if (log) |
| log->Printf("GDBRemoteCommunicationClient::%s(): " |
| "QSupportedAsyncJSONPackets unsupported", |
| __FUNCTION__); |
| } |
| |
| if (log && m_supported_async_json_packets_sp) { |
| StreamString stream; |
| m_supported_async_json_packets_sp->Dump(stream); |
| log->Printf("GDBRemoteCommunicationClient::%s(): supported async " |
| "JSON packets: %s", |
| __FUNCTION__, stream.GetString().c_str()); |
| } |
| } |
| |
| return m_supported_async_json_packets_sp |
| ? m_supported_async_json_packets_sp->GetAsArray() |
| : nullptr; |
| } |
| |
| Error GDBRemoteCommunicationClient::ConfigureRemoteStructuredData( |
| const ConstString &type_name, const StructuredData::ObjectSP &config_sp) { |
| Error error; |
| |
| if (type_name.GetLength() == 0) { |
| error.SetErrorString("invalid type_name argument"); |
| return error; |
| } |
| |
| // Build command: Configure{type_name}: serialized config |
| // data. |
| StreamGDBRemote stream; |
| stream.PutCString("QConfigure"); |
| stream.PutCString(type_name.AsCString()); |
| stream.PutChar(':'); |
| if (config_sp) { |
| // Gather the plain-text version of the configuration data. |
| StreamString unescaped_stream; |
| config_sp->Dump(unescaped_stream); |
| unescaped_stream.Flush(); |
| |
| // Add it to the stream in escaped fashion. |
| stream.PutEscapedBytes(unescaped_stream.GetData(), |
| unescaped_stream.GetSize()); |
| } |
| stream.Flush(); |
| |
| // Send the packet. |
| const bool send_async = false; |
| StringExtractorGDBRemote response; |
| auto result = SendPacketAndWaitForResponse(stream.GetString().c_str(), |
| response, send_async); |
| if (result == PacketResult::Success) { |
| // We failed if the config result comes back other than OK. |
| if (strcmp(response.GetStringRef().c_str(), "OK") == 0) { |
| // Okay! |
| error.Clear(); |
| } else { |
| error.SetErrorStringWithFormat("configuring StructuredData feature " |
| "%s failed with error %s", |
| type_name.AsCString(), |
| response.GetStringRef().c_str()); |
| } |
| } else { |
| // Can we get more data here on the failure? |
| error.SetErrorStringWithFormat("configuring StructuredData feature %s " |
| "failed when sending packet: " |
| "PacketResult=%d", |
| type_name.AsCString(), result); |
| } |
| return error; |
| } |
| |
| void GDBRemoteCommunicationClient::OnRunPacketSent(bool first) { |
| GDBRemoteClientBase::OnRunPacketSent(first); |
| m_curr_tid = LLDB_INVALID_THREAD_ID; |
| } |
