Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp

194                         [this](StringExtractorGDBRemote packet, Status &error,
197                           return this->Handle_k(packet);
582   LLDB_LOG(log, "preparing packet for pid {0} tid {1}",
603   // Output the T packet with the thread
640   // reply packet, so it must be enabled only on systems where there are no
641   // limits on packet lengths.
660     // thread otherwise this packet has all the info it needs.
915                 "GDBRemoteCommunicationServerLLGS::%s processing a packet "
1032     StringExtractorGDBRemote &packet) {
1039   if (!packet.ConsumeFront("jTraceStart:"))
1040     return SendIllFormedResponse(packet, "jTraceStart: Ill formed packet ");
1048   auto json_object = StructuredData::ParseJSON(packet.Peek());
1052     return SendIllFormedResponse(packet, "jTraceStart: Ill formed packet ");
1072     return SendIllFormedResponse(packet, "jTraceStart: Ill formed packet ");
1079     LLDB_LOG(log, "Ill formed packet buffersize = {0} type = {1}", buffersize,
1081     return SendIllFormedResponse(packet, "JTrace:start: Ill formed packet ");
1098     StringExtractorGDBRemote &packet) {
1104   if (!packet.ConsumeFront("jTraceStop:"))
1105     return SendIllFormedResponse(packet, "jTraceStop: Ill formed packet ");
1110   auto json_object = StructuredData::ParseJSON(packet.Peek());
1114     return SendIllFormedResponse(packet, "jTraceStop: Ill formed packet ");
1119     return SendIllFormedResponse(packet, "jTraceStop: Ill formed packet ");
1133     StringExtractorGDBRemote &packet) {
1140   if (!packet.ConsumeFront("jTraceConfigRead:"))
1141     return SendIllFormedResponse(packet,
1142                                  "jTraceConfigRead: Ill formed packet ");
1147   auto json_object = StructuredData::ParseJSON(packet.Peek());
1151     return SendIllFormedResponse(packet,
1152                                  "jTraceConfigRead: Ill formed packet ");
1157     return SendIllFormedResponse(packet,
1158                                  "jTraceConfigRead: Ill formed packet ");
1191     StringExtractorGDBRemote &packet) {
1201   if (packet.ConsumeFront("jTraceBufferRead:"))
1203   else if (packet.ConsumeFront("jTraceMetaRead:"))
1206     return SendIllFormedResponse(packet, "jTrace: Ill formed packet ");
1215   auto json_object = StructuredData::ParseJSON(packet.Peek());
1219     return SendIllFormedResponse(packet, "jTrace: Ill formed packet ");
1226     return SendIllFormedResponse(packet, "jTrace: Ill formed packet ");
1257     StringExtractorGDBRemote &packet) {
1278 GDBRemoteCommunicationServerLLGS::Handle_qC(StringExtractorGDBRemote &packet) {
1300 GDBRemoteCommunicationServerLLGS::Handle_k(StringExtractorGDBRemote &packet) {
1315   // No OK response for kill packet.
1322     StringExtractorGDBRemote &packet) {
1323   packet.SetFilePos(::strlen("QSetDisableASLR:"));
1324   if (packet.GetU32(0))
1333     StringExtractorGDBRemote &packet) {
1334   packet.SetFilePos(::strlen("QSetWorkingDir:"));
1336   packet.GetHexByteString(path);
1343     StringExtractorGDBRemote &packet) {
1355 GDBRemoteCommunicationServerLLGS::Handle_C(StringExtractorGDBRemote &packet) {
1369   packet.SetFilePos(::strlen("C"));
1370   if (packet.GetBytesLeft() < 1) {
1372     return SendIllFormedResponse(packet, "C packet specified without signal.");
1375       packet.GetHexMaxU32(false, std::numeric_limits<uint32_t>::max());
1377     return SendIllFormedResponse(packet, "failed to parse signal number");
1380   if (packet.GetBytesLeft() > 0) {
1382     if (*packet.Peek() == ';')
1383       return SendUnimplementedResponse(packet.GetStringRef().data());
1386           packet, "unexpected content after $C{signal-number}");
1431   // Don't send an "OK" packet; response is the stopped/exited message.
1436 GDBRemoteCommunicationServerLLGS::Handle_c(StringExtractorGDBRemote &packet) {
1440   packet.SetFilePos(packet.GetFilePos() + ::strlen("c"));
1443   const bool has_continue_address = (packet.GetBytesLeft() > 0);
1446              packet.Peek());
1447     return SendUnimplementedResponse(packet.GetStringRef().data());
1477     StringExtractorGDBRemote &packet) {
1486     StringExtractorGDBRemote &packet) {
1488   LLDB_LOGF(log, "GDBRemoteCommunicationServerLLGS::%s handling vCont packet",
1491   packet.SetFilePos(::strlen("vCont"));
1493   if (packet.GetBytesLeft() == 0) {
1498     return SendIllFormedResponse(packet, "Missing action from vCont package");
1502   if (::strcmp(packet.Peek(), ";c") == 0) {
1504     packet.SetFilePos(packet.GetFilePos() + 1);
1505     return Handle_c(packet);
1506   } else if (::strcmp(packet.Peek(), ";s") == 0) {
1508     packet.SetFilePos(packet.GetFilePos() + 1);
1509     return Handle_s(packet);
1520   while (packet.GetBytesLeft() && *packet.Peek() == ';') {
1522     packet.GetChar();
1530     const char action = packet.GetChar();
1533       thread_action.signal = packet.GetHexMaxU32(false, 0);
1536             packet, "Could not parse signal in vCont packet C action");
1545       thread_action.signal = packet.GetHexMaxU32(false, 0);
1548             packet, "Could not parse signal in vCont packet S action");
1557       return SendIllFormedResponse(packet, "Unsupported vCont action");
1562     if (packet.GetBytesLeft() && (*packet.Peek() == ':')) {
1564       packet.GetChar();
1566       thread_action.tid = packet.GetHexMaxU32(false, LLDB_INVALID_THREAD_ID);
1569             packet, "Could not parse thread number in vCont packet");
1605     StringExtractorGDBRemote &packet) {
1656     StringExtractorGDBRemote &packet) {
1671   packet.SetFilePos(strlen("qRegisterInfo"));
1673       packet.GetHexMaxU32(false, std::numeric_limits<uint32_t>::max());
1860     StringExtractorGDBRemote &packet) {
1895     StringExtractorGDBRemote &packet) {
1896   // FIXME for now we return the full thread list in the initial packet and
1902 GDBRemoteCommunicationServerLLGS::Handle_g(StringExtractorGDBRemote &packet) {
1905   // Move past packet name.
1906   packet.SetFilePos(strlen("g"));
1909   NativeThreadProtocol *thread = GetThreadFromSuffix(packet);
1957 GDBRemoteCommunicationServerLLGS::Handle_p(StringExtractorGDBRemote &packet) {
1961   packet.SetFilePos(strlen("p"));
1963       packet.GetHexMaxU32(false, std::numeric_limits<uint32_t>::max());
1968               __FUNCTION__, packet.GetStringRef().data());
1973   NativeThreadProtocol *thread = GetThreadFromSuffix(packet);
2033 GDBRemoteCommunicationServerLLGS::Handle_P(StringExtractorGDBRemote &packet) {
2037   if (packet.GetBytesLeft() < 1)
2038     return SendIllFormedResponse(packet, "Empty P packet");
2041   packet.SetFilePos(strlen("P"));
2043       packet.GetHexMaxU32(false, std::numeric_limits<uint32_t>::max());
2048               __FUNCTION__, packet.GetStringRef().data());
2053   if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != '='))
2055         packet, "P packet missing '=' char after register number");
2059   size_t reg_size = packet.GetHexBytesAvail(reg_bytes);
2062   NativeThreadProtocol *thread = GetThreadFromSuffix(packet);
2096     return SendIllFormedResponse(packet, "P packet register size is incorrect");
2118 GDBRemoteCommunicationServerLLGS::Handle_H(StringExtractorGDBRemote &packet) {
2132   packet.SetFilePos(strlen("H"));
2133   if (packet.GetBytesLeft() < 1) {
2138     return SendIllFormedResponse(packet, "H command missing {g,c} variant");
2141   const char h_variant = packet.GetChar();
2154     return SendIllFormedResponse(packet,
2161       packet.GetHexMaxU64(false, std::numeric_limits<lldb::tid_t>::max());
2188     return SendIllFormedResponse(packet,
2196 GDBRemoteCommunicationServerLLGS::Handle_I(StringExtractorGDBRemote &packet) {
2209   packet.SetFilePos(::strlen("I"));
2212     size_t read = packet.GetHexBytesAvail(tmp);
2232     StringExtractorGDBRemote &packet) {
2258     StringExtractorGDBRemote &packet) {
2271   packet.SetFilePos(strlen("m"));
2272   if (packet.GetBytesLeft() < 1)
2273     return SendIllFormedResponse(packet, "Too short m packet");
2278   const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0);
2281   if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ','))
2282     return SendIllFormedResponse(packet, "Comma sep missing in m packet");
2285   if (packet.GetBytesLeft() < 1)
2286     return SendIllFormedResponse(packet, "Length missing in m packet");
2288   const uint64_t byte_count = packet.GetHexMaxU64(false, 0);
2292               "zero-length packet",
2325   packet.SetFilePos(0);
2326   char kind = packet.GetChar('?');
2339 GDBRemoteCommunicationServerLLGS::Handle_M(StringExtractorGDBRemote &packet) {
2352   packet.SetFilePos(strlen("M"));
2353   if (packet.GetBytesLeft() < 1)
2354     return SendIllFormedResponse(packet, "Too short M packet");
2359   const lldb::addr_t write_addr = packet.GetHexMaxU64(false, 0);
2362   if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ','))
2363     return SendIllFormedResponse(packet, "Comma sep missing in M packet");
2366   if (packet.GetBytesLeft() < 1)
2367     return SendIllFormedResponse(packet, "Length missing in M packet");
2369   const uint64_t byte_count = packet.GetHexMaxU64(false, 0);
2371     LLDB_LOG(log, "nothing to write: zero-length packet");
2376   if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ':'))
2378         packet, "Comma sep missing in M packet after byte length");
2387   const uint64_t convert_count = packet.GetHexBytes(buf, 0);
2394     return SendIllFormedResponse(packet, "M content byte length specified did "
2420     StringExtractorGDBRemote &packet) {
2454     StringExtractorGDBRemote &packet) {
2468   packet.SetFilePos(strlen("qMemoryRegionInfo:"));
2469   if (packet.GetBytesLeft() < 1)
2470     return SendIllFormedResponse(packet, "Too short qMemoryRegionInfo: packet");
2473   const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0);
2522 GDBRemoteCommunicationServerLLGS::Handle_Z(StringExtractorGDBRemote &packet) {
2532   packet.SetFilePos(strlen("Z"));
2533   if (packet.GetBytesLeft() < 1)
2535         packet, "Too short Z packet, missing software/hardware specifier");
2542       GDBStoppointType(packet.GetS32(eStoppointInvalid));
2569         packet, "Z packet had invalid software/hardware specifier");
2572   if ((packet.GetBytesLeft() < 1) || packet.GetChar() != ',')
2574         packet, "Malformed Z packet, expecting comma after stoppoint type");
2577   if (packet.GetBytesLeft() < 1)
2578     return SendIllFormedResponse(packet, "Too short Z packet, missing address");
2579   const lldb::addr_t addr = packet.GetHexMaxU64(false, 0);
2581   if ((packet.GetBytesLeft() < 1) || packet.GetChar() != ',')
2583         packet, "Malformed Z packet, expecting comma after address");
2587       packet.GetHexMaxU32(false, std::numeric_limits<uint32_t>::max());
2590         packet, "Malformed Z packet, failed to parse size argument");
2616 GDBRemoteCommunicationServerLLGS::Handle_z(StringExtractorGDBRemote &packet) {
2626   packet.SetFilePos(strlen("z"));
2627   if (packet.GetBytesLeft() < 1)
2629         packet, "Too short z packet, missing software/hardware specifier");
2635       GDBStoppointType(packet.GetS32(eStoppointInvalid));
2655         packet, "z packet had invalid software/hardware specifier");
2658   if ((packet.GetBytesLeft() < 1) || packet.GetChar() != ',')
2660         packet, "Malformed z packet, expecting comma after stoppoint type");
2663   if (packet.GetBytesLeft() < 1)
2664     return SendIllFormedResponse(packet, "Too short z packet, missing address");
2665   const lldb::addr_t addr = packet.GetHexMaxU64(false, 0);
2667   if ((packet.GetBytesLeft() < 1) || packet.GetChar() != ',')
2669         packet, "Malformed z packet, expecting comma after address");
2673   const uint32_t size = packet.GetHexMaxU32 (false,
2676       return SendIllFormedResponse(packet, "Malformed z packet, failed to parse
2703 GDBRemoteCommunicationServerLLGS::Handle_s(StringExtractorGDBRemote &packet) {
2795     StringExtractorGDBRemote &packet) {
2797   // The packet format is "qXfer:<object>:<action>:<annex>:offset,length"
2798   StringRef(packet.GetStringRef()).split(fields, ':', 4);
2800     return SendIllFormedResponse(packet, "malformed qXfer packet");
2811     return SendIllFormedResponse(packet, "qXfer packet missing offset");
2814     return SendIllFormedResponse(packet,
2815                                  "qXfer packet missing comma after offset");
2820     return SendIllFormedResponse(packet, "qXfer packet missing length");
2868     StringExtractorGDBRemote &packet) {
2871   // Move past packet name.
2872   packet.SetFilePos(strlen("QSaveRegisterState"));
2875   NativeThreadProtocol *thread = GetThreadFromSuffix(packet);
2879           packet, "No thread specified in QSaveRegisterState packet");
2881       return SendIllFormedResponse(packet,
2882                                    "No thread was is set with the Hg packet");
2916     StringExtractorGDBRemote &packet) {
2920   packet.SetFilePos(strlen("QRestoreRegisterState:"));
2921   if (packet.GetBytesLeft() < 1)
2923         packet, "QRestoreRegisterState packet missing register save id");
2925   const uint32_t save_id = packet.GetU32(0);
2927     LLDB_LOG(log, "QRestoreRegisterState packet has malformed save id, "
2933   NativeThreadProtocol *thread = GetThreadFromSuffix(packet);
2937           packet, "No thread specified in QRestoreRegisterState packet");
2939       return SendIllFormedResponse(packet,
2940                                    "No thread was is set with the Hg packet");
2977     StringExtractorGDBRemote &packet) {
2981   packet.SetFilePos(strlen("vAttach"));
2982   if (!packet.GetBytesLeft() || packet.GetChar() != ';')
2983     return SendIllFormedResponse(packet, "vAttach missing expected ';'");
2986   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID, 16);
2988     return SendIllFormedResponse(packet,
3007   // Notify we attached by sending a stop packet.
3012 GDBRemoteCommunicationServerLLGS::Handle_D(StringExtractorGDBRemote &packet) {
3030   packet.SetFilePos(1);
3031   if (packet.GetBytesLeft()) {
3032     if (packet.GetChar() != ';')
3033       return SendIllFormedResponse(packet, "D missing expected ';'");
3036     pid = packet.GetU32(LLDB_INVALID_PROCESS_ID, 16);
3038       return SendIllFormedResponse(packet, "D failed to parse the process id");
3042     return SendIllFormedResponse(packet, "Invalid pid");
3059     StringExtractorGDBRemote &packet) {
3062   packet.SetFilePos(strlen("qThreadStopInfo"));
3063   const lldb::tid_t tid = packet.GetHexMaxU32(false, LLDB_INVALID_THREAD_ID);
3068               __FUNCTION__, packet.GetStringRef().data());
3083   LLDB_LOG(log, "preparing packet for pid {0}", m_debugged_process_up->GetID());
3091                    "failed to prepare a packet for pid {1}: {0}",
3104     StringExtractorGDBRemote &packet) {
3110   packet.SetFilePos(strlen("qWatchpointSupportInfo"));
3111   if (packet.GetBytesLeft() == 0)
3113   if (packet.GetChar() != ':')
3129     StringExtractorGDBRemote &packet) {
3135   packet.SetFilePos(strlen("qFileLoadAddress:"));
3136   if (packet.GetBytesLeft() == 0)
3140   packet.GetHexByteString(file_name);
3158     StringExtractorGDBRemote &packet) {
3160   packet.SetFilePos(strlen("QPassSignals:"));
3164   while (packet.GetBytesLeft() > 0) {
3165     int signal = packet.GetS32(-1, 16);
3167       return SendIllFormedResponse(packet, "Failed to parse signal number.");
3170     packet.SkipSpaces();
3171     char separator = packet.GetChar();
3175       return SendIllFormedResponse(packet, "Invalid separator,"
3216     StringExtractorGDBRemote &packet) {
3238   if (packet.GetBytesLeft() < 1 || packet.GetChar() != ';') {
3241               "error: expected ';' prior to start of thread suffix: packet "
3243               __FUNCTION__, packet.GetStringRef().data());
3247   if (!packet.GetBytesLeft())
3251   if (strncmp(packet.Peek(), "thread:", strlen("thread:")) != 0) {
3254               "error: expected 'thread:' but not found, packet contents = "
3256               __FUNCTION__, packet.GetStringRef().data());
3259   packet.SetFilePos(packet.GetFilePos() + strlen("thread:"));
3260   const lldb::tid_t tid = packet.GetHexMaxU64(false, 0);