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