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 break; 164 165 case 'P': 166 if (PACKET_STARTS_WITH ("qProcessInfoPID:")) return eServerPacketType_qProcessInfoPID; 167 if (PACKET_STARTS_WITH ("qPlatform_shell:")) return eServerPacketType_qPlatform_shell; 168 if (PACKET_STARTS_WITH ("qPlatform_mkdir:")) return eServerPacketType_qPlatform_mkdir; 169 if (PACKET_STARTS_WITH ("qPlatform_chmod:")) return eServerPacketType_qPlatform_chmod; 170 if (PACKET_MATCHES ("qProcessInfo")) return eServerPacketType_qProcessInfo; 171 break; 172 173 case 'R': 174 if (PACKET_STARTS_WITH ("qRcmd,")) return eServerPacketType_qRcmd; 175 if (PACKET_STARTS_WITH ("qRegisterInfo")) return eServerPacketType_qRegisterInfo; 176 break; 177 178 case 'S': 179 if (PACKET_STARTS_WITH ("qSpeedTest:")) return eServerPacketType_qSpeedTest; 180 if (PACKET_MATCHES ("qShlibInfoAddr")) return eServerPacketType_qShlibInfoAddr; 181 if (PACKET_MATCHES ("qStepPacketSupported")) return eServerPacketType_qStepPacketSupported; 182 if (PACKET_STARTS_WITH ("qSupported")) return eServerPacketType_qSupported; 183 if (PACKET_MATCHES ("qSyncThreadStateSupported")) return eServerPacketType_qSyncThreadStateSupported; 184 break; 185 186 case 'T': 187 if (PACKET_STARTS_WITH ("qThreadExtraInfo,")) return eServerPacketType_qThreadExtraInfo; 188 if (PACKET_STARTS_WITH ("qThreadStopInfo")) return eServerPacketType_qThreadStopInfo; 189 break; 190 191 case 'U': 192 if (PACKET_STARTS_WITH ("qUserName:")) return eServerPacketType_qUserName; 193 break; 194 195 case 'V': 196 if (PACKET_MATCHES ("qVAttachOrWaitSupported")) return eServerPacketType_qVAttachOrWaitSupported; 197 break; 198 199 case 'W': 200 if (PACKET_STARTS_WITH ("qWatchpointSupportInfo:")) return eServerPacketType_qWatchpointSupportInfo; 201 if (PACKET_MATCHES ("qWatchpointSupportInfo")) return eServerPacketType_qWatchpointSupportInfoSupported; 202 break; 203 204 case 'X': 205 if (PACKET_STARTS_WITH ("qXfer:auxv:read::")) return eServerPacketType_qXfer_auxv_read; 206 break; 207 } 208 break; 209 case 'v': 210 if (PACKET_STARTS_WITH("vFile:")) 211 { 212 if (PACKET_STARTS_WITH("vFile:open:")) return eServerPacketType_vFile_open; 213 else if (PACKET_STARTS_WITH("vFile:close:")) return eServerPacketType_vFile_close; 214 else if (PACKET_STARTS_WITH("vFile:pread")) return eServerPacketType_vFile_pread; 215 else if (PACKET_STARTS_WITH("vFile:pwrite")) return eServerPacketType_vFile_pwrite; 216 else if (PACKET_STARTS_WITH("vFile:size")) return eServerPacketType_vFile_size; 217 else if (PACKET_STARTS_WITH("vFile:exists")) return eServerPacketType_vFile_exists; 218 else if (PACKET_STARTS_WITH("vFile:stat")) return eServerPacketType_vFile_stat; 219 else if (PACKET_STARTS_WITH("vFile:mode")) return eServerPacketType_vFile_mode; 220 else if (PACKET_STARTS_WITH("vFile:MD5")) return eServerPacketType_vFile_md5; 221 else if (PACKET_STARTS_WITH("vFile:symlink")) return eServerPacketType_vFile_symlink; 222 else if (PACKET_STARTS_WITH("vFile:unlink")) return eServerPacketType_vFile_unlink; 223 224 } else { 225 if (PACKET_STARTS_WITH ("vAttach;")) return eServerPacketType_vAttach; 226 if (PACKET_STARTS_WITH ("vAttachWait;")) return eServerPacketType_vAttachWait; 227 if (PACKET_STARTS_WITH ("vAttachOrWait;")) return eServerPacketType_vAttachOrWait; 228 if (PACKET_STARTS_WITH ("vAttachName;")) return eServerPacketType_vAttachName; 229 if (PACKET_STARTS_WITH("vCont;")) return eServerPacketType_vCont; 230 if (PACKET_MATCHES ("vCont?")) return eServerPacketType_vCont_actions; 231 } 232 break; 233 case '_': 234 switch (packet_cstr[1]) 235 { 236 case 'M': 237 return eServerPacketType__M; 238 239 case 'm': 240 return eServerPacketType__m; 241 } 242 break; 243 244 case '?': 245 if (packet_size == 1) return eServerPacketType_stop_reason; 246 break; 247 248 case 'c': 249 return eServerPacketType_c; 250 251 case 'C': 252 return eServerPacketType_C; 253 254 case 'D': 255 if (packet_size == 1) return eServerPacketType_D; 256 break; 257 258 case 'g': 259 if (packet_size == 1) return eServerPacketType_g; 260 break; 261 262 case 'G': 263 return eServerPacketType_G; 264 265 case 'H': 266 return eServerPacketType_H; 267 268 case 'I': 269 return eServerPacketType_I; 270 271 case 'k': 272 if (packet_size == 1) return eServerPacketType_k; 273 break; 274 275 case 'm': 276 return eServerPacketType_m; 277 278 case 'M': 279 return eServerPacketType_M; 280 281 case 'p': 282 return eServerPacketType_p; 283 284 case 'P': 285 return eServerPacketType_P; 286 287 case 's': 288 if (packet_size == 1) return eServerPacketType_s; 289 break; 290 291 case 'S': 292 return eServerPacketType_S; 293 294 case 'T': 295 return eServerPacketType_T; 296 297 case 'z': 298 if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4') 299 return eServerPacketType_z; 300 break; 301 302 case 'Z': 303 if (packet_cstr[1] >= '0' && packet_cstr[1] <= '4') 304 return eServerPacketType_Z; 305 break; 306 } 307 return eServerPacketType_unimplemented; 308 } 309 310 bool 311 StringExtractorGDBRemote::IsOKResponse() const 312 { 313 return GetResponseType () == eOK; 314 } 315 316 317 bool 318 StringExtractorGDBRemote::IsUnsupportedResponse() const 319 { 320 return GetResponseType () == eUnsupported; 321 } 322 323 bool 324 StringExtractorGDBRemote::IsNormalResponse() const 325 { 326 return GetResponseType () == eResponse; 327 } 328 329 bool 330 StringExtractorGDBRemote::IsErrorResponse() const 331 { 332 return GetResponseType () == eError && 333 m_packet.size() == 3 && 334 isxdigit(m_packet[1]) && 335 isxdigit(m_packet[2]); 336 } 337 338 uint8_t 339 StringExtractorGDBRemote::GetError () 340 { 341 if (GetResponseType() == eError) 342 { 343 SetFilePos(1); 344 return GetHexU8(255); 345 } 346 return 0; 347 } 348 349 size_t 350 StringExtractorGDBRemote::GetEscapedBinaryData (std::string &str) 351 { 352 // Just get the data bytes in the string as GDBRemoteCommunication::CheckForPacket() 353 // already removes any 0x7d escaped characters. If any 0x7d characters are left in 354 // the packet, then they are supposed to be there... 355 str.clear(); 356 const size_t bytes_left = GetBytesLeft(); 357 if (bytes_left > 0) 358 { 359 str.assign(m_packet, m_index, bytes_left); 360 m_index += bytes_left; 361 } 362 return str.size(); 363 } 364 365