contrib/llvm/tools/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerCommon.cpp

   1 //===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "GDBRemoteCommunicationServerCommon.h"
  11
  12 #include <errno.h>
  13
  14 // C Includes
  15
  16 #ifdef __APPLE__
  17 #include <TargetConditionals.h>
  18 #endif
  19
  20 // C++ Includes
  21 #include <chrono>
  22 #include <cstring>
  23
  24 // Other libraries and framework includes
  25 #include "lldb/Core/ModuleSpec.h"
  26 #include "lldb/Host/Config.h"
  27 #include "lldb/Host/File.h"
  28 #include "lldb/Host/FileSystem.h"
  29 #include "lldb/Host/Host.h"
  30 #include "lldb/Host/HostInfo.h"
  31 #include "lldb/Interpreter/OptionArgParser.h"
  32 #include "lldb/Symbol/ObjectFile.h"
  33 #include "lldb/Target/FileAction.h"
  34 #include "lldb/Target/Platform.h"
  35 #include "lldb/Target/Process.h"
  36 #include "lldb/Utility/Endian.h"
  37 #include "lldb/Utility/JSON.h"
  38 #include "lldb/Utility/Log.h"
  39 #include "lldb/Utility/SafeMachO.h"
  40 #include "lldb/Utility/StreamGDBRemote.h"
  41 #include "lldb/Utility/StreamString.h"
  42 #include "llvm/ADT/Triple.h"
  43
  44 // Project includes
  45 #include "ProcessGDBRemoteLog.h"
  46 #include "lldb/Utility/StringExtractorGDBRemote.h"
  47
  48 #ifdef __ANDROID__
  49 #include "lldb/Host/android/HostInfoAndroid.h"
  50 #endif
  51
  52 #include "llvm/ADT/StringSwitch.h"
  53
  54 using namespace lldb;
  55 using namespace lldb_private;
  56 using namespace lldb_private::process_gdb_remote;
  57
  58 #ifdef __ANDROID__
  59 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
  60 #else
  61 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
  62 #endif
  63
  64 //----------------------------------------------------------------------
  65 // GDBRemoteCommunicationServerCommon constructor
  66 //----------------------------------------------------------------------
  67 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
  68     const char *comm_name, const char *listener_name)
  69     : GDBRemoteCommunicationServer(comm_name, listener_name),
  70       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
  71       m_proc_infos_index(0), m_thread_suffix_supported(false),
  72       m_list_threads_in_stop_reply(false) {
  73   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
  74                                 &GDBRemoteCommunicationServerCommon::Handle_A);
  75   RegisterMemberFunctionHandler(
  76       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
  77       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
  78   RegisterMemberFunctionHandler(
  79       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
  80       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
  81   RegisterMemberFunctionHandler(
  82       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
  83       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
  84   RegisterMemberFunctionHandler(
  85       StringExtractorGDBRemote::eServerPacketType_qGroupName,
  86       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
  87   RegisterMemberFunctionHandler(
  88       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
  89       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
  90   RegisterMemberFunctionHandler(
  91       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
  92       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
  93   RegisterMemberFunctionHandler(
  94       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
  95       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
  96   RegisterMemberFunctionHandler(
  97       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
  98       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
  99   RegisterMemberFunctionHandler(
 100       StringExtractorGDBRemote::eServerPacketType_qEcho,
 101       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
 102   RegisterMemberFunctionHandler(
 103       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
 104       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
 105   RegisterMemberFunctionHandler(
 106       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
 107       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
 108   RegisterMemberFunctionHandler(
 109       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
 110       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
 111   RegisterMemberFunctionHandler(
 112       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
 113       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
 114   RegisterMemberFunctionHandler(
 115       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
 116       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
 117   RegisterMemberFunctionHandler(
 118       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
 119       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
 120   RegisterMemberFunctionHandler(
 121       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
 122       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
 123   RegisterMemberFunctionHandler(
 124       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
 125       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
 126   RegisterMemberFunctionHandler(
 127       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
 128       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
 129   RegisterMemberFunctionHandler(
 130       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
 131       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
 132   RegisterMemberFunctionHandler(
 133       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
 134       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
 135   RegisterMemberFunctionHandler(
 136       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
 137       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
 138   RegisterMemberFunctionHandler(
 139       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
 140       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
 141   RegisterMemberFunctionHandler(
 142       StringExtractorGDBRemote::eServerPacketType_qSupported,
 143       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
 144   RegisterMemberFunctionHandler(
 145       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
 146       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
 147   RegisterMemberFunctionHandler(
 148       StringExtractorGDBRemote::eServerPacketType_qUserName,
 149       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
 150   RegisterMemberFunctionHandler(
 151       StringExtractorGDBRemote::eServerPacketType_vFile_close,
 152       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
 153   RegisterMemberFunctionHandler(
 154       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
 155       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
 156   RegisterMemberFunctionHandler(
 157       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
 158       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
 159   RegisterMemberFunctionHandler(
 160       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
 161       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
 162   RegisterMemberFunctionHandler(
 163       StringExtractorGDBRemote::eServerPacketType_vFile_open,
 164       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
 165   RegisterMemberFunctionHandler(
 166       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
 167       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
 168   RegisterMemberFunctionHandler(
 169       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
 170       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
 171   RegisterMemberFunctionHandler(
 172       StringExtractorGDBRemote::eServerPacketType_vFile_size,
 173       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
 174   RegisterMemberFunctionHandler(
 175       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
 176       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
 177   RegisterMemberFunctionHandler(
 178       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
 179       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
 180   RegisterMemberFunctionHandler(
 181       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
 182       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
 183 }
 184
 185 //----------------------------------------------------------------------
 186 // Destructor
 187 //----------------------------------------------------------------------
 188 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
 189
 190 GDBRemoteCommunication::PacketResult
 191 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
 192     StringExtractorGDBRemote &packet) {
 193   StreamString response;
 194
 195   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
 196
 197   ArchSpec host_arch(HostInfo::GetArchitecture());
 198   const llvm::Triple &host_triple = host_arch.GetTriple();
 199   response.PutCString("triple:");
 200   response.PutCStringAsRawHex8(host_triple.getTriple().c_str());
 201   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
 202
 203   const char *distribution_id = host_arch.GetDistributionId().AsCString();
 204   if (distribution_id) {
 205     response.PutCString("distribution_id:");
 206     response.PutCStringAsRawHex8(distribution_id);
 207     response.PutCString(";");
 208   }
 209
 210 #if defined(__APPLE__)
 211   // For parity with debugserver, we'll include the vendor key.
 212   response.PutCString("vendor:apple;");
 213
 214   // Send out MachO info.
 215   uint32_t cpu = host_arch.GetMachOCPUType();
 216   uint32_t sub = host_arch.GetMachOCPUSubType();
 217   if (cpu != LLDB_INVALID_CPUTYPE)
 218     response.Printf("cputype:%u;", cpu);
 219   if (sub != LLDB_INVALID_CPUTYPE)
 220     response.Printf("cpusubtype:%u;", sub);
 221
 222   if (cpu == llvm::MachO::CPU_TYPE_ARM
 223       || cpu == llvm::MachO::CPU_TYPE_ARM64) {
 224 // Indicate the OS type.
 225 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
 226     response.PutCString("ostype:tvos;");
 227 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
 228     response.PutCString("ostype:watchos;");
 229 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
 230     response.PutCString("ostype:bridgeos;");
 231 #else
 232     response.PutCString("ostype:ios;");
 233 #endif
 234
 235     // On arm, we use "synchronous" watchpoints which means the exception is
 236     // delivered before the instruction executes.
 237     response.PutCString("watchpoint_exceptions_received:before;");
 238   } else {
 239     response.PutCString("ostype:macosx;");
 240     response.Printf("watchpoint_exceptions_received:after;");
 241   }
 242
 243 #else
 244   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
 245       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
 246       host_arch.GetMachine() == llvm::Triple::arm ||
 247       host_arch.GetMachine() == llvm::Triple::armeb ||
 248       host_arch.GetMachine() == llvm::Triple::mips64 ||
 249       host_arch.GetMachine() == llvm::Triple::mips64el ||
 250       host_arch.GetMachine() == llvm::Triple::mips ||
 251       host_arch.GetMachine() == llvm::Triple::mipsel)
 252     response.Printf("watchpoint_exceptions_received:before;");
 253   else
 254     response.Printf("watchpoint_exceptions_received:after;");
 255 #endif
 256
 257   switch (endian::InlHostByteOrder()) {
 258   case eByteOrderBig:
 259     response.PutCString("endian:big;");
 260     break;
 261   case eByteOrderLittle:
 262     response.PutCString("endian:little;");
 263     break;
 264   case eByteOrderPDP:
 265     response.PutCString("endian:pdp;");
 266     break;
 267   default:
 268     response.PutCString("endian:unknown;");
 269     break;
 270   }
 271
 272   llvm::VersionTuple version = HostInfo::GetOSVersion();
 273   if (!version.empty()) {
 274     response.Format("os_version:{0}", version.getAsString());
 275     response.PutChar(';');
 276   }
 277
 278   std::string s;
 279   if (HostInfo::GetOSBuildString(s)) {
 280     response.PutCString("os_build:");
 281     response.PutCStringAsRawHex8(s.c_str());
 282     response.PutChar(';');
 283   }
 284   if (HostInfo::GetOSKernelDescription(s)) {
 285     response.PutCString("os_kernel:");
 286     response.PutCStringAsRawHex8(s.c_str());
 287     response.PutChar(';');
 288   }
 289
 290 #if defined(__APPLE__)
 291
 292 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 293   // For iOS devices, we are connected through a USB Mux so we never pretend to
 294   // actually have a hostname as far as the remote lldb that is connecting to
 295   // this lldb-platform is concerned
 296   response.PutCString("hostname:");
 297   response.PutCStringAsRawHex8("127.0.0.1");
 298   response.PutChar(';');
 299 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 300   if (HostInfo::GetHostname(s)) {
 301     response.PutCString("hostname:");
 302     response.PutCStringAsRawHex8(s.c_str());
 303     response.PutChar(';');
 304   }
 305 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
 306
 307 #else  // #if defined(__APPLE__)
 308   if (HostInfo::GetHostname(s)) {
 309     response.PutCString("hostname:");
 310     response.PutCStringAsRawHex8(s.c_str());
 311     response.PutChar(';');
 312   }
 313 #endif // #if defined(__APPLE__)
 314
 315   if (g_default_packet_timeout_sec > 0)
 316     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
 317
 318   return SendPacketNoLock(response.GetString());
 319 }
 320
 321 GDBRemoteCommunication::PacketResult
 322 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
 323     StringExtractorGDBRemote &packet) {
 324   // Packet format: "qProcessInfoPID:%i" where %i is the pid
 325   packet.SetFilePos(::strlen("qProcessInfoPID:"));
 326   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
 327   if (pid != LLDB_INVALID_PROCESS_ID) {
 328     ProcessInstanceInfo proc_info;
 329     if (Host::GetProcessInfo(pid, proc_info)) {
 330       StreamString response;
 331       CreateProcessInfoResponse(proc_info, response);
 332       return SendPacketNoLock(response.GetString());
 333     }
 334   }
 335   return SendErrorResponse(1);
 336 }
 337
 338 GDBRemoteCommunication::PacketResult
 339 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
 340     StringExtractorGDBRemote &packet) {
 341   m_proc_infos_index = 0;
 342   m_proc_infos.Clear();
 343
 344   ProcessInstanceInfoMatch match_info;
 345   packet.SetFilePos(::strlen("qfProcessInfo"));
 346   if (packet.GetChar() == ':') {
 347     llvm::StringRef key;
 348     llvm::StringRef value;
 349     while (packet.GetNameColonValue(key, value)) {
 350       bool success = true;
 351       if (key.equals("name")) {
 352         StringExtractor extractor(value);
 353         std::string file;
 354         extractor.GetHexByteString(file);
 355         match_info.GetProcessInfo().GetExecutableFile().SetFile(
 356             file, false, FileSpec::Style::native);
 357       } else if (key.equals("name_match")) {
 358         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
 359                                    .Case("equals", NameMatch::Equals)
 360                                    .Case("starts_with", NameMatch::StartsWith)
 361                                    .Case("ends_with", NameMatch::EndsWith)
 362                                    .Case("contains", NameMatch::Contains)
 363                                    .Case("regex", NameMatch::RegularExpression)
 364                                    .Default(NameMatch::Ignore);
 365         match_info.SetNameMatchType(name_match);
 366         if (name_match == NameMatch::Ignore)
 367           return SendErrorResponse(2);
 368       } else if (key.equals("pid")) {
 369         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 370         if (value.getAsInteger(0, pid))
 371           return SendErrorResponse(2);
 372         match_info.GetProcessInfo().SetProcessID(pid);
 373       } else if (key.equals("parent_pid")) {
 374         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
 375         if (value.getAsInteger(0, pid))
 376           return SendErrorResponse(2);
 377         match_info.GetProcessInfo().SetParentProcessID(pid);
 378       } else if (key.equals("uid")) {
 379         uint32_t uid = UINT32_MAX;
 380         if (value.getAsInteger(0, uid))
 381           return SendErrorResponse(2);
 382         match_info.GetProcessInfo().SetUserID(uid);
 383       } else if (key.equals("gid")) {
 384         uint32_t gid = UINT32_MAX;
 385         if (value.getAsInteger(0, gid))
 386           return SendErrorResponse(2);
 387         match_info.GetProcessInfo().SetGroupID(gid);
 388       } else if (key.equals("euid")) {
 389         uint32_t uid = UINT32_MAX;
 390         if (value.getAsInteger(0, uid))
 391           return SendErrorResponse(2);
 392         match_info.GetProcessInfo().SetEffectiveUserID(uid);
 393       } else if (key.equals("egid")) {
 394         uint32_t gid = UINT32_MAX;
 395         if (value.getAsInteger(0, gid))
 396           return SendErrorResponse(2);
 397         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
 398       } else if (key.equals("all_users")) {
 399         match_info.SetMatchAllUsers(
 400             OptionArgParser::ToBoolean(value, false, &success));
 401       } else if (key.equals("triple")) {
 402         match_info.GetProcessInfo().GetArchitecture() =
 403             HostInfo::GetAugmentedArchSpec(value);
 404       } else {
 405         success = false;
 406       }
 407
 408       if (!success)
 409         return SendErrorResponse(2);
 410     }
 411   }
 412
 413   if (Host::FindProcesses(match_info, m_proc_infos)) {
 414     // We found something, return the first item by calling the get subsequent
 415     // process info packet handler...
 416     return Handle_qsProcessInfo(packet);
 417   }
 418   return SendErrorResponse(3);
 419 }
 420
 421 GDBRemoteCommunication::PacketResult
 422 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
 423     StringExtractorGDBRemote &packet) {
 424   if (m_proc_infos_index < m_proc_infos.GetSize()) {
 425     StreamString response;
 426     CreateProcessInfoResponse(
 427         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
 428     ++m_proc_infos_index;
 429     return SendPacketNoLock(response.GetString());
 430   }
 431   return SendErrorResponse(4);
 432 }
 433
 434 GDBRemoteCommunication::PacketResult
 435 GDBRemoteCommunicationServerCommon::Handle_qUserName(
 436     StringExtractorGDBRemote &packet) {
 437 #if !defined(LLDB_DISABLE_POSIX)
 438   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 439   if (log)
 440     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
 441
 442   // Packet format: "qUserName:%i" where %i is the uid
 443   packet.SetFilePos(::strlen("qUserName:"));
 444   uint32_t uid = packet.GetU32(UINT32_MAX);
 445   if (uid != UINT32_MAX) {
 446     std::string name;
 447     if (HostInfo::LookupUserName(uid, name)) {
 448       StreamString response;
 449       response.PutCStringAsRawHex8(name.c_str());
 450       return SendPacketNoLock(response.GetString());
 451     }
 452   }
 453   if (log)
 454     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
 455 #endif
 456   return SendErrorResponse(5);
 457 }
 458
 459 GDBRemoteCommunication::PacketResult
 460 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
 461     StringExtractorGDBRemote &packet) {
 462 #if !defined(LLDB_DISABLE_POSIX)
 463   // Packet format: "qGroupName:%i" where %i is the gid
 464   packet.SetFilePos(::strlen("qGroupName:"));
 465   uint32_t gid = packet.GetU32(UINT32_MAX);
 466   if (gid != UINT32_MAX) {
 467     std::string name;
 468     if (HostInfo::LookupGroupName(gid, name)) {
 469       StreamString response;
 470       response.PutCStringAsRawHex8(name.c_str());
 471       return SendPacketNoLock(response.GetString());
 472     }
 473   }
 474 #endif
 475   return SendErrorResponse(6);
 476 }
 477
 478 GDBRemoteCommunication::PacketResult
 479 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
 480     StringExtractorGDBRemote &packet) {
 481   packet.SetFilePos(::strlen("qSpeedTest:"));
 482
 483   llvm::StringRef key;
 484   llvm::StringRef value;
 485   bool success = packet.GetNameColonValue(key, value);
 486   if (success && key.equals("response_size")) {
 487     uint32_t response_size = 0;
 488     if (!value.getAsInteger(0, response_size)) {
 489       if (response_size == 0)
 490         return SendOKResponse();
 491       StreamString response;
 492       uint32_t bytes_left = response_size;
 493       response.PutCString("data:");
 494       while (bytes_left > 0) {
 495         if (bytes_left >= 26) {
 496           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 497           bytes_left -= 26;
 498         } else {
 499           response.Printf("%*.*s;", bytes_left, bytes_left,
 500                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
 501           bytes_left = 0;
 502         }
 503       }
 504       return SendPacketNoLock(response.GetString());
 505     }
 506   }
 507   return SendErrorResponse(7);
 508 }
 509
 510 GDBRemoteCommunication::PacketResult
 511 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
 512     StringExtractorGDBRemote &packet) {
 513   packet.SetFilePos(::strlen("vFile:open:"));
 514   std::string path;
 515   packet.GetHexByteStringTerminatedBy(path, ',');
 516   if (!path.empty()) {
 517     if (packet.GetChar() == ',') {
 518       uint32_t flags =
 519           File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
 520       if (packet.GetChar() == ',') {
 521         mode_t mode = packet.GetHexMaxU32(false, 0600);
 522         Status error;
 523         const FileSpec path_spec{path, true};
 524         int fd = ::open(path_spec.GetCString(), flags, mode);
 525         const int save_errno = fd == -1 ? errno : 0;
 526         StreamString response;
 527         response.PutChar('F');
 528         response.Printf("%i", fd);
 529         if (save_errno)
 530           response.Printf(",%i", save_errno);
 531         return SendPacketNoLock(response.GetString());
 532       }
 533     }
 534   }
 535   return SendErrorResponse(18);
 536 }
 537
 538 GDBRemoteCommunication::PacketResult
 539 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
 540     StringExtractorGDBRemote &packet) {
 541   packet.SetFilePos(::strlen("vFile:close:"));
 542   int fd = packet.GetS32(-1);
 543   Status error;
 544   int err = -1;
 545   int save_errno = 0;
 546   if (fd >= 0) {
 547     err = close(fd);
 548     save_errno = err == -1 ? errno : 0;
 549   } else {
 550     save_errno = EINVAL;
 551   }
 552   StreamString response;
 553   response.PutChar('F');
 554   response.Printf("%i", err);
 555   if (save_errno)
 556     response.Printf(",%i", save_errno);
 557   return SendPacketNoLock(response.GetString());
 558 }
 559
 560 GDBRemoteCommunication::PacketResult
 561 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
 562     StringExtractorGDBRemote &packet) {
 563 #ifdef _WIN32
 564   // Not implemented on Windows
 565   return SendUnimplementedResponse(
 566       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
 567 #else
 568   StreamGDBRemote response;
 569   packet.SetFilePos(::strlen("vFile:pread:"));
 570   int fd = packet.GetS32(-1);
 571   if (packet.GetChar() == ',') {
 572     uint64_t count = packet.GetU64(UINT64_MAX);
 573     if (packet.GetChar() == ',') {
 574       uint64_t offset = packet.GetU64(UINT32_MAX);
 575       if (count == UINT64_MAX) {
 576         response.Printf("F-1:%i", EINVAL);
 577         return SendPacketNoLock(response.GetString());
 578       }
 579
 580       std::string buffer(count, 0);
 581       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
 582       const int save_errno = bytes_read == -1 ? errno : 0;
 583       response.PutChar('F');
 584       response.Printf("%zi", bytes_read);
 585       if (save_errno)
 586         response.Printf(",%i", save_errno);
 587       else {
 588         response.PutChar(';');
 589         response.PutEscapedBytes(&buffer[0], bytes_read);
 590       }
 591       return SendPacketNoLock(response.GetString());
 592     }
 593   }
 594   return SendErrorResponse(21);
 595
 596 #endif
 597 }
 598
 599 GDBRemoteCommunication::PacketResult
 600 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
 601     StringExtractorGDBRemote &packet) {
 602 #ifdef _WIN32
 603   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
 604                                    "vFile_pWrite() unimplemented");
 605 #else
 606   packet.SetFilePos(::strlen("vFile:pwrite:"));
 607
 608   StreamGDBRemote response;
 609   response.PutChar('F');
 610
 611   int fd = packet.GetU32(UINT32_MAX);
 612   if (packet.GetChar() == ',') {
 613     off_t offset = packet.GetU64(UINT32_MAX);
 614     if (packet.GetChar() == ',') {
 615       std::string buffer;
 616       if (packet.GetEscapedBinaryData(buffer)) {
 617         const ssize_t bytes_written =
 618             ::pwrite(fd, buffer.data(), buffer.size(), offset);
 619         const int save_errno = bytes_written == -1 ? errno : 0;
 620         response.Printf("%zi", bytes_written);
 621         if (save_errno)
 622           response.Printf(",%i", save_errno);
 623       } else {
 624         response.Printf("-1,%i", EINVAL);
 625       }
 626       return SendPacketNoLock(response.GetString());
 627     }
 628   }
 629   return SendErrorResponse(27);
 630 #endif
 631 }
 632
 633 GDBRemoteCommunication::PacketResult
 634 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
 635     StringExtractorGDBRemote &packet) {
 636   packet.SetFilePos(::strlen("vFile:size:"));
 637   std::string path;
 638   packet.GetHexByteString(path);
 639   if (!path.empty()) {
 640     uint64_t Size;
 641     if (llvm::sys::fs::file_size(path, Size))
 642       return SendErrorResponse(5);
 643     StreamString response;
 644     response.PutChar('F');
 645     response.PutHex64(Size);
 646     if (Size == UINT64_MAX) {
 647       response.PutChar(',');
 648       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
 649     }
 650     return SendPacketNoLock(response.GetString());
 651   }
 652   return SendErrorResponse(22);
 653 }
 654
 655 GDBRemoteCommunication::PacketResult
 656 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
 657     StringExtractorGDBRemote &packet) {
 658   packet.SetFilePos(::strlen("vFile:mode:"));
 659   std::string path;
 660   packet.GetHexByteString(path);
 661   if (!path.empty()) {
 662     Status error;
 663     const uint32_t mode = File::GetPermissions(FileSpec{path, true}, error);
 664     StreamString response;
 665     response.Printf("F%u", mode);
 666     if (mode == 0 || error.Fail())
 667       response.Printf(",%i", (int)error.GetError());
 668     return SendPacketNoLock(response.GetString());
 669   }
 670   return SendErrorResponse(23);
 671 }
 672
 673 GDBRemoteCommunication::PacketResult
 674 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
 675     StringExtractorGDBRemote &packet) {
 676   packet.SetFilePos(::strlen("vFile:exists:"));
 677   std::string path;
 678   packet.GetHexByteString(path);
 679   if (!path.empty()) {
 680     bool retcode = llvm::sys::fs::exists(path);
 681     StreamString response;
 682     response.PutChar('F');
 683     response.PutChar(',');
 684     if (retcode)
 685       response.PutChar('1');
 686     else
 687       response.PutChar('0');
 688     return SendPacketNoLock(response.GetString());
 689   }
 690   return SendErrorResponse(24);
 691 }
 692
 693 GDBRemoteCommunication::PacketResult
 694 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
 695     StringExtractorGDBRemote &packet) {
 696   packet.SetFilePos(::strlen("vFile:symlink:"));
 697   std::string dst, src;
 698   packet.GetHexByteStringTerminatedBy(dst, ',');
 699   packet.GetChar(); // Skip ',' char
 700   packet.GetHexByteString(src);
 701   Status error = FileSystem::Symlink(FileSpec{src, true}, FileSpec{dst, false});
 702   StreamString response;
 703   response.Printf("F%u,%u", error.GetError(), error.GetError());
 704   return SendPacketNoLock(response.GetString());
 705 }
 706
 707 GDBRemoteCommunication::PacketResult
 708 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
 709     StringExtractorGDBRemote &packet) {
 710   packet.SetFilePos(::strlen("vFile:unlink:"));
 711   std::string path;
 712   packet.GetHexByteString(path);
 713   Status error(llvm::sys::fs::remove(path));
 714   StreamString response;
 715   response.Printf("F%u,%u", error.GetError(), error.GetError());
 716   return SendPacketNoLock(response.GetString());
 717 }
 718
 719 GDBRemoteCommunication::PacketResult
 720 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
 721     StringExtractorGDBRemote &packet) {
 722   packet.SetFilePos(::strlen("qPlatform_shell:"));
 723   std::string path;
 724   std::string working_dir;
 725   packet.GetHexByteStringTerminatedBy(path, ',');
 726   if (!path.empty()) {
 727     if (packet.GetChar() == ',') {
 728       // FIXME: add timeout to qPlatform_shell packet
 729       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
 730       if (packet.GetChar() == ',')
 731         packet.GetHexByteString(working_dir);
 732       int status, signo;
 733       std::string output;
 734       Status err = Host::RunShellCommand(
 735           path.c_str(), FileSpec{working_dir, true}, &status, &signo, &output,
 736           std::chrono::seconds(10));
 737       StreamGDBRemote response;
 738       if (err.Fail()) {
 739         response.PutCString("F,");
 740         response.PutHex32(UINT32_MAX);
 741       } else {
 742         response.PutCString("F,");
 743         response.PutHex32(status);
 744         response.PutChar(',');
 745         response.PutHex32(signo);
 746         response.PutChar(',');
 747         response.PutEscapedBytes(output.c_str(), output.size());
 748       }
 749       return SendPacketNoLock(response.GetString());
 750     }
 751   }
 752   return SendErrorResponse(24);
 753 }
 754
 755 GDBRemoteCommunication::PacketResult
 756 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
 757     StringExtractorGDBRemote &packet) {
 758   return SendUnimplementedResponse(
 759       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
 760 }
 761
 762 GDBRemoteCommunication::PacketResult
 763 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
 764     StringExtractorGDBRemote &packet) {
 765   packet.SetFilePos(::strlen("vFile:MD5:"));
 766   std::string path;
 767   packet.GetHexByteString(path);
 768   if (!path.empty()) {
 769     StreamGDBRemote response;
 770     auto Result = llvm::sys::fs::md5_contents(path);
 771     if (!Result) {
 772       response.PutCString("F,");
 773       response.PutCString("x");
 774     } else {
 775       response.PutCString("F,");
 776       response.PutHex64(Result->low());
 777       response.PutHex64(Result->high());
 778     }
 779     return SendPacketNoLock(response.GetString());
 780   }
 781   return SendErrorResponse(25);
 782 }
 783
 784 GDBRemoteCommunication::PacketResult
 785 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
 786     StringExtractorGDBRemote &packet) {
 787   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
 788   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
 789   if (packet.GetChar() == ',') {
 790     std::string path;
 791     packet.GetHexByteString(path);
 792     Status error(llvm::sys::fs::create_directory(path, mode));
 793
 794     StreamGDBRemote response;
 795     response.Printf("F%u", error.GetError());
 796
 797     return SendPacketNoLock(response.GetString());
 798   }
 799   return SendErrorResponse(20);
 800 }
 801
 802 GDBRemoteCommunication::PacketResult
 803 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
 804     StringExtractorGDBRemote &packet) {
 805   packet.SetFilePos(::strlen("qPlatform_chmod:"));
 806
 807   auto perms =
 808       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
 809   if (packet.GetChar() == ',') {
 810     std::string path;
 811     packet.GetHexByteString(path);
 812     Status error(llvm::sys::fs::setPermissions(path, perms));
 813
 814     StreamGDBRemote response;
 815     response.Printf("F%u", error.GetError());
 816
 817     return SendPacketNoLock(response.GetString());
 818   }
 819   return SendErrorResponse(19);
 820 }
 821
 822 GDBRemoteCommunication::PacketResult
 823 GDBRemoteCommunicationServerCommon::Handle_qSupported(
 824     StringExtractorGDBRemote &packet) {
 825   StreamGDBRemote response;
 826
 827   // Features common to lldb-platform and llgs.
 828   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
 829                                          // size--debugger can always use less
 830   response.Printf("PacketSize=%x", max_packet_size);
 831
 832   response.PutCString(";QStartNoAckMode+");
 833   response.PutCString(";QThreadSuffixSupported+");
 834   response.PutCString(";QListThreadsInStopReply+");
 835   response.PutCString(";qEcho+");
 836 #if defined(__linux__) || defined(__NetBSD__)
 837   response.PutCString(";QPassSignals+");
 838   response.PutCString(";qXfer:auxv:read+");
 839 #endif
 840
 841   return SendPacketNoLock(response.GetString());
 842 }
 843
 844 GDBRemoteCommunication::PacketResult
 845 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
 846     StringExtractorGDBRemote &packet) {
 847   m_thread_suffix_supported = true;
 848   return SendOKResponse();
 849 }
 850
 851 GDBRemoteCommunication::PacketResult
 852 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
 853     StringExtractorGDBRemote &packet) {
 854   m_list_threads_in_stop_reply = true;
 855   return SendOKResponse();
 856 }
 857
 858 GDBRemoteCommunication::PacketResult
 859 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
 860     StringExtractorGDBRemote &packet) {
 861   packet.SetFilePos(::strlen("QSetDetachOnError:"));
 862   if (packet.GetU32(0))
 863     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
 864   else
 865     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
 866   return SendOKResponse();
 867 }
 868
 869 GDBRemoteCommunication::PacketResult
 870 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
 871     StringExtractorGDBRemote &packet) {
 872   // Send response first before changing m_send_acks to we ack this packet
 873   PacketResult packet_result = SendOKResponse();
 874   m_send_acks = false;
 875   return packet_result;
 876 }
 877
 878 GDBRemoteCommunication::PacketResult
 879 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
 880     StringExtractorGDBRemote &packet) {
 881   packet.SetFilePos(::strlen("QSetSTDIN:"));
 882   FileAction file_action;
 883   std::string path;
 884   packet.GetHexByteString(path);
 885   const bool read = true;
 886   const bool write = false;
 887   if (file_action.Open(STDIN_FILENO, FileSpec{path, false}, read, write)) {
 888     m_process_launch_info.AppendFileAction(file_action);
 889     return SendOKResponse();
 890   }
 891   return SendErrorResponse(15);
 892 }
 893
 894 GDBRemoteCommunication::PacketResult
 895 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
 896     StringExtractorGDBRemote &packet) {
 897   packet.SetFilePos(::strlen("QSetSTDOUT:"));
 898   FileAction file_action;
 899   std::string path;
 900   packet.GetHexByteString(path);
 901   const bool read = false;
 902   const bool write = true;
 903   if (file_action.Open(STDOUT_FILENO, FileSpec{path, false}, read, write)) {
 904     m_process_launch_info.AppendFileAction(file_action);
 905     return SendOKResponse();
 906   }
 907   return SendErrorResponse(16);
 908 }
 909
 910 GDBRemoteCommunication::PacketResult
 911 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
 912     StringExtractorGDBRemote &packet) {
 913   packet.SetFilePos(::strlen("QSetSTDERR:"));
 914   FileAction file_action;
 915   std::string path;
 916   packet.GetHexByteString(path);
 917   const bool read = false;
 918   const bool write = true;
 919   if (file_action.Open(STDERR_FILENO, FileSpec{path, false}, read, write)) {
 920     m_process_launch_info.AppendFileAction(file_action);
 921     return SendOKResponse();
 922   }
 923   return SendErrorResponse(17);
 924 }
 925
 926 GDBRemoteCommunication::PacketResult
 927 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
 928     StringExtractorGDBRemote &packet) {
 929   if (m_process_launch_error.Success())
 930     return SendOKResponse();
 931   StreamString response;
 932   response.PutChar('E');
 933   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
 934   return SendPacketNoLock(response.GetString());
 935 }
 936
 937 GDBRemoteCommunication::PacketResult
 938 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
 939     StringExtractorGDBRemote &packet) {
 940   packet.SetFilePos(::strlen("QEnvironment:"));
 941   const uint32_t bytes_left = packet.GetBytesLeft();
 942   if (bytes_left > 0) {
 943     m_process_launch_info.GetEnvironment().insert(packet.Peek());
 944     return SendOKResponse();
 945   }
 946   return SendErrorResponse(12);
 947 }
 948
 949 GDBRemoteCommunication::PacketResult
 950 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
 951     StringExtractorGDBRemote &packet) {
 952   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
 953   const uint32_t bytes_left = packet.GetBytesLeft();
 954   if (bytes_left > 0) {
 955     std::string str;
 956     packet.GetHexByteString(str);
 957     m_process_launch_info.GetEnvironment().insert(str);
 958     return SendOKResponse();
 959   }
 960   return SendErrorResponse(12);
 961 }
 962
 963 GDBRemoteCommunication::PacketResult
 964 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
 965     StringExtractorGDBRemote &packet) {
 966   packet.SetFilePos(::strlen("QLaunchArch:"));
 967   const uint32_t bytes_left = packet.GetBytesLeft();
 968   if (bytes_left > 0) {
 969     const char *arch_triple = packet.Peek();
 970     m_process_launch_info.SetArchitecture(HostInfo::GetAugmentedArchSpec(arch_triple));
 971     return SendOKResponse();
 972   }
 973   return SendErrorResponse(13);
 974 }
 975
 976 GDBRemoteCommunication::PacketResult
 977 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
 978   // The 'A' packet is the most over designed packet ever here with redundant
 979   // argument indexes, redundant argument lengths and needed hex encoded
 980   // argument string values. Really all that is needed is a comma separated hex
 981   // encoded argument value list, but we will stay true to the documented
 982   // version of the 'A' packet here...
 983
 984   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
 985   int actual_arg_index = 0;
 986
 987   packet.SetFilePos(1); // Skip the 'A'
 988   bool success = true;
 989   while (success && packet.GetBytesLeft() > 0) {
 990     // Decode the decimal argument string length. This length is the number of
 991     // hex nibbles in the argument string value.
 992     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
 993     if (arg_len == UINT32_MAX)
 994       success = false;
 995     else {
 996       // Make sure the argument hex string length is followed by a comma
 997       if (packet.GetChar() != ',')
 998         success = false;
 999       else {
1000         // Decode the argument index. We ignore this really because who would
1001         // really send down the arguments in a random order???
1002         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1003         if (arg_idx == UINT32_MAX)
1004           success = false;
1005         else {
1006           // Make sure the argument index is followed by a comma
1007           if (packet.GetChar() != ',')
1008             success = false;
1009           else {
1010             // Decode the argument string value from hex bytes back into a UTF8
1011             // string and make sure the length matches the one supplied in the
1012             // packet
1013             std::string arg;
1014             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1015                 (arg_len / 2))
1016               success = false;
1017             else {
1018               // If there are any bytes left
1019               if (packet.GetBytesLeft()) {
1020                 if (packet.GetChar() != ',')
1021                   success = false;
1022               }
1023
1024               if (success) {
1025                 if (arg_idx == 0)
1026                   m_process_launch_info.GetExecutableFile().SetFile(
1027                       arg, false, FileSpec::Style::native);
1028                 m_process_launch_info.GetArguments().AppendArgument(arg);
1029                 if (log)
1030                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1031                               __FUNCTION__, actual_arg_index, arg.c_str());
1032                 ++actual_arg_index;
1033               }
1034             }
1035           }
1036         }
1037       }
1038     }
1039   }
1040
1041   if (success) {
1042     m_process_launch_error = LaunchProcess();
1043     if (m_process_launch_error.Success())
1044       return SendOKResponse();
1045     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1046   }
1047   return SendErrorResponse(8);
1048 }
1049
1050 GDBRemoteCommunication::PacketResult
1051 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1052     StringExtractorGDBRemote &packet) {
1053   // Just echo back the exact same packet for qEcho...
1054   return SendPacketNoLock(packet.GetStringRef());
1055 }
1056
1057 GDBRemoteCommunication::PacketResult
1058 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1059     StringExtractorGDBRemote &packet) {
1060   packet.SetFilePos(::strlen("qModuleInfo:"));
1061
1062   std::string module_path;
1063   packet.GetHexByteStringTerminatedBy(module_path, ';');
1064   if (module_path.empty())
1065     return SendErrorResponse(1);
1066
1067   if (packet.GetChar() != ';')
1068     return SendErrorResponse(2);
1069
1070   std::string triple;
1071   packet.GetHexByteString(triple);
1072
1073   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1074   if (!matched_module_spec.GetFileSpec())
1075     return SendErrorResponse(3);
1076
1077   const auto file_offset = matched_module_spec.GetObjectOffset();
1078   const auto file_size = matched_module_spec.GetObjectSize();
1079   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1080
1081   StreamGDBRemote response;
1082
1083   if (uuid_str.empty()) {
1084     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1085     if (!Result)
1086       return SendErrorResponse(5);
1087     response.PutCString("md5:");
1088     response.PutCStringAsRawHex8(Result->digest().c_str());
1089   } else {
1090     response.PutCString("uuid:");
1091     response.PutCStringAsRawHex8(uuid_str.c_str());
1092   }
1093   response.PutChar(';');
1094
1095   const auto &module_arch = matched_module_spec.GetArchitecture();
1096   response.PutCString("triple:");
1097   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1098   response.PutChar(';');
1099
1100   response.PutCString("file_path:");
1101   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1102   response.PutChar(';');
1103   response.PutCString("file_offset:");
1104   response.PutHex64(file_offset);
1105   response.PutChar(';');
1106   response.PutCString("file_size:");
1107   response.PutHex64(file_size);
1108   response.PutChar(';');
1109
1110   return SendPacketNoLock(response.GetString());
1111 }
1112
1113 GDBRemoteCommunication::PacketResult
1114 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1115     StringExtractorGDBRemote &packet) {
1116   packet.SetFilePos(::strlen("jModulesInfo:"));
1117
1118   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1119   if (!object_sp)
1120     return SendErrorResponse(1);
1121
1122   StructuredData::Array *packet_array = object_sp->GetAsArray();
1123   if (!packet_array)
1124     return SendErrorResponse(2);
1125
1126   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1127   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1128     StructuredData::Dictionary *query =
1129         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1130     if (!query)
1131       continue;
1132     llvm::StringRef file, triple;
1133     if (!query->GetValueForKeyAsString("file", file) ||
1134         !query->GetValueForKeyAsString("triple", triple))
1135       continue;
1136
1137     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1138     if (!matched_module_spec.GetFileSpec())
1139       continue;
1140
1141     const auto file_offset = matched_module_spec.GetObjectOffset();
1142     const auto file_size = matched_module_spec.GetObjectSize();
1143     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1144
1145     if (uuid_str.empty())
1146       continue;
1147
1148     JSONObject::SP response = std::make_shared<JSONObject>();
1149     response_array_sp->AppendObject(response);
1150     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1151     response->SetObject(
1152         "triple",
1153         std::make_shared<JSONString>(
1154             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1155     response->SetObject("file_path",
1156                         std::make_shared<JSONString>(
1157                             matched_module_spec.GetFileSpec().GetPath()));
1158     response->SetObject("file_offset",
1159                         std::make_shared<JSONNumber>(file_offset));
1160     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1161   }
1162
1163   StreamString response;
1164   response_array_sp->Write(response);
1165   StreamGDBRemote escaped_response;
1166   escaped_response.PutEscapedBytes(response.GetString().data(),
1167                                    response.GetSize());
1168   return SendPacketNoLock(escaped_response.GetString());
1169 }
1170
1171 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1172     const ProcessInstanceInfo &proc_info, StreamString &response) {
1173   response.Printf(
1174       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1175       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1176       proc_info.GetUserID(), proc_info.GetGroupID(),
1177       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1178   response.PutCString("name:");
1179   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1180   response.PutChar(';');
1181   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1182   if (proc_arch.IsValid()) {
1183     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1184     response.PutCString("triple:");
1185     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1186     response.PutChar(';');
1187   }
1188 }
1189
1190 void GDBRemoteCommunicationServerCommon::
1191     CreateProcessInfoResponse_DebugServerStyle(
1192         const ProcessInstanceInfo &proc_info, StreamString &response) {
1193   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1194                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1195                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1196                   proc_info.GetUserID(), proc_info.GetGroupID(),
1197                   proc_info.GetEffectiveUserID(),
1198                   proc_info.GetEffectiveGroupID());
1199
1200   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1201   if (proc_arch.IsValid()) {
1202     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1203 #if defined(__APPLE__)
1204     // We'll send cputype/cpusubtype.
1205     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1206     if (cpu_type != 0)
1207       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1208
1209     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1210     if (cpu_subtype != 0)
1211       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1212
1213     const std::string vendor = proc_triple.getVendorName();
1214     if (!vendor.empty())
1215       response.Printf("vendor:%s;", vendor.c_str());
1216 #else
1217     // We'll send the triple.
1218     response.PutCString("triple:");
1219     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1220     response.PutChar(';');
1221 #endif
1222     std::string ostype = proc_triple.getOSName();
1223     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1224     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1225       switch (proc_triple.getArch()) {
1226       case llvm::Triple::arm:
1227       case llvm::Triple::thumb:
1228       case llvm::Triple::aarch64:
1229         ostype = "ios";
1230         break;
1231       default:
1232         // No change.
1233         break;
1234       }
1235     }
1236     response.Printf("ostype:%s;", ostype.c_str());
1237
1238     switch (proc_arch.GetByteOrder()) {
1239     case lldb::eByteOrderLittle:
1240       response.PutCString("endian:little;");
1241       break;
1242     case lldb::eByteOrderBig:
1243       response.PutCString("endian:big;");
1244       break;
1245     case lldb::eByteOrderPDP:
1246       response.PutCString("endian:pdp;");
1247       break;
1248     default:
1249       // Nothing.
1250       break;
1251     }
1252     // In case of MIPS64, pointer size is depend on ELF ABI For N32 the pointer
1253     // size is 4 and for N64 it is 8
1254     std::string abi = proc_arch.GetTargetABI();
1255     if (!abi.empty())
1256       response.Printf("elf_abi:%s;", abi.c_str());
1257     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1258   }
1259 }
1260
1261 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1262     const std::string &module_path, const ArchSpec &arch) {
1263 #ifdef __ANDROID__
1264   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1265 #else
1266   return FileSpec(module_path, true);
1267 #endif
1268 }
1269
1270 ModuleSpec
1271 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1272                                                   llvm::StringRef triple) {
1273   ArchSpec arch(triple);
1274
1275   const FileSpec req_module_path_spec(module_path, true);
1276   const FileSpec module_path_spec =
1277       FindModuleFile(req_module_path_spec.GetPath(), arch);
1278   const ModuleSpec module_spec(module_path_spec, arch);
1279
1280   ModuleSpecList module_specs;
1281   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1282                                            module_specs))
1283     return ModuleSpec();
1284
1285   ModuleSpec matched_module_spec;
1286   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1287     return ModuleSpec();
1288
1289   return matched_module_spec;
1290 }