1 //===-- StringExtractorGDBRemote.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 // C Includes 11 #include <string.h> 12 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "Utility/StringExtractorGDBRemote.h" 17 18 19 20 StringExtractorGDBRemote::ResponseType 21 StringExtractorGDBRemote::GetResponseType () const 22 { 23 if (m_packet.empty()) 24 return eUnsupported; 25 26 switch (m_packet[0]) 27 { 28 case 'E': 29 if (m_packet.size() == 3 && 30 isxdigit(m_packet[1]) && 31 isxdigit(m_packet[2])) 32 return eError; 33 break; 34 35 case 'O': 36 if (m_packet.size() == 2 && m_packet[1] == 'K') 37 return eOK; 38 break; 39 40 case '+': 41 if (m_packet.size() == 1) 42 return eAck; 43 break; 44 45 case '-': 46 if (m_packet.size() == 1) 47 return eNack; 48 break; 49 } 50 return eResponse; 51 } 52 53 StringExtractorGDBRemote::ServerPacketType 54 StringExtractorGDBRemote::GetServerPacketType () const 55 { 56 #define PACKET_MATCHES(s) ((packet_size == (sizeof(s)-1)) && (strcmp((packet_cstr),(s)) == 0)) 57 #define PACKET_STARTS_WITH(s) ((packet_size >= (sizeof(s)-1)) && ::strncmp(packet_cstr, s, (sizeof(s)-1))==0) 58 59 // Empty is not a supported packet... 60 if (m_packet.empty()) 61 return eServerPacketType_invalid; 62 63 const size_t packet_size = m_packet.size(); 64 const char *packet_cstr = m_packet.c_str(); 65 switch (m_packet[0]) 66 { 67 68 case '%': 69 return eServerPacketType_notify; 70 71 case '\x03': 72 if (packet_size == 1) return eServerPacketType_interrupt; 73 break; 74 75 case '-': 76 if (packet_size == 1) return eServerPacketType_nack; 77 break; 78 79 case '+': 80 if (packet_size == 1) return eServerPacketType_ack; 81 break; 82 83 case 'A': 84 return eServerPacketType_A; 85 86 case 'Q': 87 88 switch (packet_cstr[1]) 89 { 90 case 'E': 91 if (PACKET_STARTS_WITH ("QEnvironment:")) return eServerPacketType_QEnvironment; 92 if (PACKET_STARTS_WITH ("QEnvironmentHexEncoded:")) return eServerPacketType_QEnvironmentHexEncoded; 93 break; 94 95 case 'S': 96 if (PACKET_MATCHES ("QStartNoAckMode")) return eServerPacketType_QStartNoAckMode; 97 if (PACKET_STARTS_WITH ("QSaveRegisterState")) return eServerPacketType_QSaveRegisterState; 98 if (PACKET_STARTS_WITH ("QSetDisableASLR:")) return eServerPacketType_QSetDisableASLR; 99 if (PACKET_STARTS_WITH ("QSetDetachOnError:")) return eServerPacketType_QSetDetachOnError; 100 if (PACKET_STARTS_WITH ("QSetSTDIN:")) return eServerPacketType_QSetSTDIN; 101 if (PACKET_STARTS_WITH ("QSetSTDOUT:")) return eServerPacketType_QSetSTDOUT; 102 if (PACKET_STARTS_WITH ("QSetSTDERR:")) return eServerPacketType_QSetSTDERR; 103 if (PACKET_STARTS_WITH ("QSetWorkingDir:")) return eServerPacketType_QSetWorkingDir; 104 if (PACKET_STARTS_WITH ("QSetLogging:")) return eServerPacketType_QSetLogging; 105 if (PACKET_STARTS_WITH ("QSetMaxPacketSize:")) return eServerPacketType_QSetMaxPacketSize; 106 if (PACKET_STARTS_WITH ("QSetMaxPayloadSize:")) return eServerPacketType_QSetMaxPayloadSize; 107 if (PACKET_STARTS_WITH ("QSetEnableAsyncProfiling;")) return eServerPacketType_QSetEnableAsyncProfiling; 108 if (PACKET_STARTS_WITH ("QSyncThreadState:")) return eServerPacketType_QSyncThreadState; 109 break; 110 111 case 'L': 112 if (PACKET_STARTS_WITH ("QLaunchArch:")) return eServerPacketType_QLaunchArch; 113 if (PACKET_MATCHES("QListThreadsInStopReply")) return eServerPacketType_QListThreadsInStopReply; 114 break; 115 116 case 'R': 117 if (PACKET_STARTS_WITH ("QRestoreRegisterState:")) return eServerPacketType_QRestoreRegisterState; 118 break; 119 120 case 'T': 121 if (PACKET_MATCHES ("QThreadSuffixSupported")) return eServerPacketType_QThreadSuffixSupported; 122 break; 123 } 124 break; 125 126 case 'q': 127 switch (packet_cstr[1]) 128 { 129 case 's': 130 if (PACKET_MATCHES ("qsProcessInfo")) return eServerPacketType_qsProcessInfo; 131 if (PACKET_MATCHES ("qsThreadInfo")) return eServerPacketType_qsThreadInfo; 132 break; 133 134 case 'f': 135 if (PACKET_STARTS_WITH ("qfProcessInfo")) return eServerPacketType_qfProcessInfo; 136 if (PACKET_STARTS_WITH ("qfThreadInfo")) return eServerPacketType_qfThreadInfo; 137 break; 138 139 case 'C': 140 if (packet_size == 2) return eServerPacketType_qC; 141 break; 142 143 case 'E': 144 if (PACKET_STARTS_WITH ("qEcho:")) return eServerPacketType_qEcho; 145 break; 146 147 case 'F': 148 if (PACKET_STARTS_WITH ("qFileLoadAddress:")) return eServerPacketType_qFileLoadAddress; 149 break; 150 151 case 'G': 152 if (PACKET_STARTS_WITH ("qGroupName:")) return eServerPacketType_qGroupName; 153 if (PACKET_MATCHES ("qGetWorkingDir")) return eServerPacketType_qGetWorkingDir; 154 if (PACKET_MATCHES ("qGetPid")) return eServerPacketType_qGetPid; 155 if (PACKET_STARTS_WITH ("qGetProfileData;")) return eServerPacketType_qGetProfileData; 156 if (PACKET_MATCHES ("qGDBServerVersion")) return eServerPacketType_qGDBServerVersion; 157 break; 158 159 case 'H': 160 if (PACKET_MATCHES ("qHostInfo")) return eServerPacketType_qHostInfo; 161 break; 162 163 case 'K': 164 if (PACKET_STARTS_WITH ("qKillSpawnedProcess")) return eServerPacketType_qKillSpawnedProcess; 165 break; 166 167 case 'L': 168 if (PACKET_STARTS_WITH ("qLaunchGDBServer")) return eServerPacketType_qLaunchGDBServer; 169 if (PACKET_MATCHES ("qLaunchSuccess")) return eServerPacketType_qLaunchSuccess; 170 break; 171 172 case 'M': 173 if (PACKET_STARTS_WITH ("qMemoryRegionInfo:")) return eServerPacketType_qMemoryRegionInfo; 174 if (PACKET_MATCHES ("qMemoryRegionInfo")) return eServerPacketType_qMemoryRegionInfoSupported; 175 if (PACKET_STARTS_WITH ("qModuleInfo:")) return eServerPacketType_qModuleInfo; 176 break; 177 178 case 'P': 179 if (PACKET_STARTS_WITH ("qProcessInfoPID:")) return eServerPacketType_qProcessInfoPID; 180 if (PACKET_STARTS_WITH ("qPlatform_shell:")) return eServerPacketType_qPlatform_shell; 181 if (PACKET_STARTS_WITH ("qPlatform_mkdir:")) return eServerPacketType_qPlatform_mkdir; 182 if (PACKET_STARTS_WITH ("qPlatform_chmod:")) return eServerPacketType_qPlatform_chmod; 183 if (PACKET_MATCHES ("qProcessInfo")) return eServerPacketType_qProcessInfo; 184 break; 185 186 case 'R': 187 if (PACKET_STARTS_WITH ("qRcmd,")) return eServerPacketType_qRcmd; 188 if (PACKET_STARTS_WITH ("qRegisterInfo")) return eServerPacketType_qRegisterInfo; 189 break; 190 191 case 'S': 192 if (PACKET_STARTS_WITH ("qSpeedTest:")) return eServerPacketType_qSpeedTest; 193 if (PACKET_MATCHES ("qShlibInfoAddr")) return eServerPacketType_qShlibInfoAddr; 194 if (PACKET_MATCHES ("qStepPacketSupported")) return eServerPacketType_qStepPacketSupported; 195 if (PACKET_STARTS_WITH ("qSupported")) return eServerPacketType_qSupported; 196 if (PACKET_MATCHES ("qSyncThreadStateSupported")) return eServerPacketType_qSyncThreadStateSupported; 197 break; 198 199 case 'T': 200 if (PACKET_STARTS_WITH ("qThreadExtraInfo,")) return eServerPacketType_qThreadExtraInfo; 201 if (PACKET_STARTS_WITH ("qThreadStopInfo")) return eServerPacketType_qThreadStopInfo; 202 break; 203 204 case 'U': 205 if (PACKET_STARTS_WITH ("qUserName:")) return eServerPacketType_qUserName; 206 break; 207 208 case 'V': 209 if (PACKET_MATCHES ("qVAttachOrWaitSupported")) return eServerPacketType_qVAttachOrWaitSupported; 210 break; 211 212 case 'W': 213 if (PACKET_STARTS_WITH ("qWatchpointSupportInfo:")) return eServerPacketType_qWatchpointSupportInfo; 214 if (PACKET_MATCHES ("qWatchpointSupportInfo")) return eServerPacketType_qWatchpointSupportInfoSupported; 215 break; 216 217 case 'X': 218 if (PACKET_STARTS_WITH ("qXfer:auxv:read::")) return eServerPacketType_qXfer_auxv_read; 219 break; 220 } 221 break; 222 223 case 'j': 224 if (PACKET_MATCHES("jSignalInfo")) return eServerPacketType_jSignalsInfo; 225 226 case 'v': 227 if (PACKET_STARTS_WITH("vFile:")) 228 { 229 if (PACKET_STARTS_WITH("vFile:open:")) return eServerPacketType_vFile_open; 230 else if (PACKET_STARTS_WITH("vFile:close:")) return eServerPacketType_vFile_close; 231 else if (PACKET_STARTS_WITH("vFile:pread")) return eServerPacketType_vFile_pread; 232 else if (PACKET_STARTS_WITH("vFile:pwrite")) return eServerPacketType_vFile_pwrite; 233 else if (PACKET_STARTS_WITH("vFile:size")) return eServerPacketType_vFile_size; 234 else if (PACKET_STARTS_WITH("vFile:exists")) return eServerPacketType_vFile_exists; 235 else if (PACKET_STARTS_WITH("vFile:stat")) return eServerPacketType_vFile_stat; 236 else if (PACKET_STARTS_WITH("vFile:mode")) return eServerPacketType_vFile_mode; 237 else if (PACKET_STARTS_WITH("vFile:MD5")) return eServerPacketType_vFile_md5; 238 else if (PACKET_STARTS_WITH("vFile:symlink")) return eServerPacketType_vFile_symlink; 239 else if (PACKET_STARTS_WITH("vFile:unlink")) return eServerPacketType_vFile_unlink; 240 241 } else { 242 if (PACKET_STARTS_WITH ("vAttach;")) return eServerPacketType_vAttach; 243 if (PACKET_STARTS_WITH ("vAttachWait;")) return eServerPacketType_vAttachWait; 244 if (PACKET_STARTS_WITH ("vAttachOrWait;")) return eServerPacketType_vAttachOrWait; 245 if (PACKET_STARTS_WITH ("vAttachName;")) return eServerPacketType_vAttachName; 246 if (PACKET_STARTS_WITH("vCont;")) return eServerPacketType_vCont; 247 if (PACKET_MATCHES ("vCont?")) return eServerPacketType_vCont_actions; 248 } 249 break; 250 case '_': 251 switch (packet_cstr[1]) 252 { 253 case 'M': 254 return eServerPacketType__M; 255 256 case 'm': 257 return eServerPacketType__m; 258 } 259 break; 260 261 case '?': 262 if (packet_size == 1) return eServerPacketType_stop_reason; 263 break; 264 265 case 'c': 266 return eServerPacketType_c; 267 268 case 'C': 269 return eServerPacketType_C; 270 271 case 'D': 272 if (packet_size == 1) return eServerPacketType_D; 273 break; 274 275 case 'g': 276 if (packet_size == 1) return eServerPacketType_g; 277 break; 278 279 case 'G': 280 return eServerPacketType_G; 281 282 case 'H': 283 return eServerPacketType_H; 284 285 case 'I': 286 return eServerPacketType_I; 287 288 case 'k': 289 if (packet_size == 1) return eServerPacketType_k; 290 break; 291 292 case 'm': 293 return eServerPacketType_m; 294 295 case 'M': 296 return eServerPacketType_M; 297 298 case 'p': 299 return eServerPacketType_p; 300 301 case 'P': 302 return eServerPacketType_P; 303 304 case 's': 305 if (packet_size == 1) return eServerPacketType_s; 306 break; 307 308 case 'S': 309 return eServerPacketType_S; 310 311 case 'T': 312 return eServerPacketType_T; 313 314 case 'z': 315 if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4') 316 return eServerPacketType_z; 317 break; 318 319 case 'Z': 320 if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4') 321 return eServerPacketType_Z; 322 break; 323 } 324 return eServerPacketType_unimplemented; 325 } 326 327 bool 328 StringExtractorGDBRemote::IsOKResponse() const 329 { 330 return GetResponseType () == eOK; 331 } 332 333 334 bool 335 StringExtractorGDBRemote::IsUnsupportedResponse() const 336 { 337 return GetResponseType () == eUnsupported; 338 } 339 340 bool 341 StringExtractorGDBRemote::IsNormalResponse() const 342 { 343 return GetResponseType () == eResponse; 344 } 345 346 bool 347 StringExtractorGDBRemote::IsErrorResponse() const 348 { 349 return GetResponseType () == eError && 350 m_packet.size() == 3 && 351 isxdigit(m_packet[1]) && 352 isxdigit(m_packet[2]); 353 } 354 355 uint8_t 356 StringExtractorGDBRemote::GetError () 357 { 358 if (GetResponseType() == eError) 359 { 360 SetFilePos(1); 361 return GetHexU8(255); 362 } 363 return 0; 364 } 365 366 size_t 367 StringExtractorGDBRemote::GetEscapedBinaryData (std::string &str) 368 { 369 // Just get the data bytes in the string as GDBRemoteCommunication::CheckForPacket() 370 // already removes any 0x7d escaped characters. If any 0x7d characters are left in 371 // the packet, then they are supposed to be there... 372 str.clear(); 373 const size_t bytes_left = GetBytesLeft(); 374 if (bytes_left > 0) 375 { 376 str.assign(m_packet, m_index, bytes_left); 377 m_index += bytes_left; 378 } 379 return str.size(); 380 } 381 382