File: | build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp |
Warning: | line 3234, column 7 Value stored to 'error_string' is never read |
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1 | //===-- ProcessGDBRemote.cpp ----------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "lldb/Host/Config.h" |
10 | |
11 | #include <cerrno> |
12 | #include <cstdlib> |
13 | #if LLDB_ENABLE_POSIX1 |
14 | #include <netinet/in.h> |
15 | #include <sys/mman.h> |
16 | #include <sys/socket.h> |
17 | #include <unistd.h> |
18 | #endif |
19 | #include <sys/stat.h> |
20 | #if defined(__APPLE__) |
21 | #include <sys/sysctl.h> |
22 | #endif |
23 | #include <ctime> |
24 | #include <sys/types.h> |
25 | |
26 | #include "lldb/Breakpoint/Watchpoint.h" |
27 | #include "lldb/Core/Debugger.h" |
28 | #include "lldb/Core/Module.h" |
29 | #include "lldb/Core/ModuleSpec.h" |
30 | #include "lldb/Core/PluginManager.h" |
31 | #include "lldb/Core/StreamFile.h" |
32 | #include "lldb/Core/Value.h" |
33 | #include "lldb/DataFormatters/FormatManager.h" |
34 | #include "lldb/Host/ConnectionFileDescriptor.h" |
35 | #include "lldb/Host/FileSystem.h" |
36 | #include "lldb/Host/HostThread.h" |
37 | #include "lldb/Host/PosixApi.h" |
38 | #include "lldb/Host/PseudoTerminal.h" |
39 | #include "lldb/Host/ThreadLauncher.h" |
40 | #include "lldb/Host/XML.h" |
41 | #include "lldb/Interpreter/CommandInterpreter.h" |
42 | #include "lldb/Interpreter/CommandObject.h" |
43 | #include "lldb/Interpreter/CommandObjectMultiword.h" |
44 | #include "lldb/Interpreter/CommandReturnObject.h" |
45 | #include "lldb/Interpreter/OptionArgParser.h" |
46 | #include "lldb/Interpreter/OptionGroupBoolean.h" |
47 | #include "lldb/Interpreter/OptionGroupUInt64.h" |
48 | #include "lldb/Interpreter/OptionValueProperties.h" |
49 | #include "lldb/Interpreter/Options.h" |
50 | #include "lldb/Interpreter/Property.h" |
51 | #include "lldb/Symbol/LocateSymbolFile.h" |
52 | #include "lldb/Symbol/ObjectFile.h" |
53 | #include "lldb/Target/ABI.h" |
54 | #include "lldb/Target/DynamicLoader.h" |
55 | #include "lldb/Target/MemoryRegionInfo.h" |
56 | #include "lldb/Target/SystemRuntime.h" |
57 | #include "lldb/Target/Target.h" |
58 | #include "lldb/Target/TargetList.h" |
59 | #include "lldb/Target/ThreadPlanCallFunction.h" |
60 | #include "lldb/Utility/Args.h" |
61 | #include "lldb/Utility/FileSpec.h" |
62 | #include "lldb/Utility/LLDBLog.h" |
63 | #include "lldb/Utility/Reproducer.h" |
64 | #include "lldb/Utility/State.h" |
65 | #include "lldb/Utility/StreamString.h" |
66 | #include "lldb/Utility/Timer.h" |
67 | #include <algorithm> |
68 | #include <csignal> |
69 | #include <map> |
70 | #include <memory> |
71 | #include <mutex> |
72 | #include <sstream> |
73 | #include <thread> |
74 | |
75 | #include "GDBRemoteRegisterContext.h" |
76 | #include "GDBRemoteRegisterFallback.h" |
77 | #include "Plugins/Process/Utility/GDBRemoteSignals.h" |
78 | #include "Plugins/Process/Utility/InferiorCallPOSIX.h" |
79 | #include "Plugins/Process/Utility/StopInfoMachException.h" |
80 | #include "ProcessGDBRemote.h" |
81 | #include "ProcessGDBRemoteLog.h" |
82 | #include "ThreadGDBRemote.h" |
83 | #include "lldb/Host/Host.h" |
84 | #include "lldb/Utility/StringExtractorGDBRemote.h" |
85 | |
86 | #include "llvm/ADT/ScopeExit.h" |
87 | #include "llvm/ADT/StringSwitch.h" |
88 | #include "llvm/Support/Threading.h" |
89 | #include "llvm/Support/raw_ostream.h" |
90 | |
91 | #define DEBUGSERVER_BASENAME"debugserver" "debugserver" |
92 | using namespace lldb; |
93 | using namespace lldb_private; |
94 | using namespace lldb_private::process_gdb_remote; |
95 | |
96 | LLDB_PLUGIN_DEFINE(ProcessGDBRemote)namespace lldb_private { void lldb_initialize_ProcessGDBRemote () { ProcessGDBRemote::Initialize(); } void lldb_terminate_ProcessGDBRemote () { ProcessGDBRemote::Terminate(); } } |
97 | |
98 | namespace lldb { |
99 | // Provide a function that can easily dump the packet history if we know a |
100 | // ProcessGDBRemote * value (which we can get from logs or from debugging). We |
101 | // need the function in the lldb namespace so it makes it into the final |
102 | // executable since the LLDB shared library only exports stuff in the lldb |
103 | // namespace. This allows you to attach with a debugger and call this function |
104 | // and get the packet history dumped to a file. |
105 | void DumpProcessGDBRemotePacketHistory(void *p, const char *path) { |
106 | auto file = FileSystem::Instance().Open( |
107 | FileSpec(path), File::eOpenOptionWriteOnly | File::eOpenOptionCanCreate); |
108 | if (!file) { |
109 | llvm::consumeError(file.takeError()); |
110 | return; |
111 | } |
112 | StreamFile stream(std::move(file.get())); |
113 | ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory(stream); |
114 | } |
115 | } // namespace lldb |
116 | |
117 | namespace { |
118 | |
119 | #define LLDB_PROPERTIES_processgdbremote |
120 | #include "ProcessGDBRemoteProperties.inc" |
121 | |
122 | enum { |
123 | #define LLDB_PROPERTIES_processgdbremote |
124 | #include "ProcessGDBRemotePropertiesEnum.inc" |
125 | }; |
126 | |
127 | class PluginProperties : public Properties { |
128 | public: |
129 | static ConstString GetSettingName() { |
130 | return ConstString(ProcessGDBRemote::GetPluginNameStatic()); |
131 | } |
132 | |
133 | PluginProperties() : Properties() { |
134 | m_collection_sp = std::make_shared<OptionValueProperties>(GetSettingName()); |
135 | m_collection_sp->Initialize(g_processgdbremote_properties); |
136 | } |
137 | |
138 | ~PluginProperties() override = default; |
139 | |
140 | uint64_t GetPacketTimeout() { |
141 | const uint32_t idx = ePropertyPacketTimeout; |
142 | return m_collection_sp->GetPropertyAtIndexAsUInt64( |
143 | nullptr, idx, g_processgdbremote_properties[idx].default_uint_value); |
144 | } |
145 | |
146 | bool SetPacketTimeout(uint64_t timeout) { |
147 | const uint32_t idx = ePropertyPacketTimeout; |
148 | return m_collection_sp->SetPropertyAtIndexAsUInt64(nullptr, idx, timeout); |
149 | } |
150 | |
151 | FileSpec GetTargetDefinitionFile() const { |
152 | const uint32_t idx = ePropertyTargetDefinitionFile; |
153 | return m_collection_sp->GetPropertyAtIndexAsFileSpec(nullptr, idx); |
154 | } |
155 | |
156 | bool GetUseSVR4() const { |
157 | const uint32_t idx = ePropertyUseSVR4; |
158 | return m_collection_sp->GetPropertyAtIndexAsBoolean( |
159 | nullptr, idx, |
160 | g_processgdbremote_properties[idx].default_uint_value != 0); |
161 | } |
162 | |
163 | bool GetUseGPacketForReading() const { |
164 | const uint32_t idx = ePropertyUseGPacketForReading; |
165 | return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, true); |
166 | } |
167 | }; |
168 | |
169 | static PluginProperties &GetGlobalPluginProperties() { |
170 | static PluginProperties g_settings; |
171 | return g_settings; |
172 | } |
173 | |
174 | } // namespace |
175 | |
176 | // TODO Randomly assigning a port is unsafe. We should get an unused |
177 | // ephemeral port from the kernel and make sure we reserve it before passing it |
178 | // to debugserver. |
179 | |
180 | #if defined(__APPLE__) |
181 | #define LOW_PORT(1024u) (IPPORT_RESERVED1024) |
182 | #define HIGH_PORT(49151u) (IPPORT_HIFIRSTAUTO) |
183 | #else |
184 | #define LOW_PORT(1024u) (1024u) |
185 | #define HIGH_PORT(49151u) (49151u) |
186 | #endif |
187 | |
188 | llvm::StringRef ProcessGDBRemote::GetPluginDescriptionStatic() { |
189 | return "GDB Remote protocol based debugging plug-in."; |
190 | } |
191 | |
192 | void ProcessGDBRemote::Terminate() { |
193 | PluginManager::UnregisterPlugin(ProcessGDBRemote::CreateInstance); |
194 | } |
195 | |
196 | lldb::ProcessSP |
197 | ProcessGDBRemote::CreateInstance(lldb::TargetSP target_sp, |
198 | ListenerSP listener_sp, |
199 | const FileSpec *crash_file_path, |
200 | bool can_connect) { |
201 | lldb::ProcessSP process_sp; |
202 | if (crash_file_path == nullptr) |
203 | process_sp = std::make_shared<ProcessGDBRemote>(target_sp, listener_sp); |
204 | return process_sp; |
205 | } |
206 | |
207 | std::chrono::seconds ProcessGDBRemote::GetPacketTimeout() { |
208 | return std::chrono::seconds(GetGlobalPluginProperties().GetPacketTimeout()); |
209 | } |
210 | |
211 | ArchSpec ProcessGDBRemote::GetSystemArchitecture() { |
212 | return m_gdb_comm.GetHostArchitecture(); |
213 | } |
214 | |
215 | bool ProcessGDBRemote::CanDebug(lldb::TargetSP target_sp, |
216 | bool plugin_specified_by_name) { |
217 | if (plugin_specified_by_name) |
218 | return true; |
219 | |
220 | // For now we are just making sure the file exists for a given module |
221 | Module *exe_module = target_sp->GetExecutableModulePointer(); |
222 | if (exe_module) { |
223 | ObjectFile *exe_objfile = exe_module->GetObjectFile(); |
224 | // We can't debug core files... |
225 | switch (exe_objfile->GetType()) { |
226 | case ObjectFile::eTypeInvalid: |
227 | case ObjectFile::eTypeCoreFile: |
228 | case ObjectFile::eTypeDebugInfo: |
229 | case ObjectFile::eTypeObjectFile: |
230 | case ObjectFile::eTypeSharedLibrary: |
231 | case ObjectFile::eTypeStubLibrary: |
232 | case ObjectFile::eTypeJIT: |
233 | return false; |
234 | case ObjectFile::eTypeExecutable: |
235 | case ObjectFile::eTypeDynamicLinker: |
236 | case ObjectFile::eTypeUnknown: |
237 | break; |
238 | } |
239 | return FileSystem::Instance().Exists(exe_module->GetFileSpec()); |
240 | } |
241 | // However, if there is no executable module, we return true since we might |
242 | // be preparing to attach. |
243 | return true; |
244 | } |
245 | |
246 | // ProcessGDBRemote constructor |
247 | ProcessGDBRemote::ProcessGDBRemote(lldb::TargetSP target_sp, |
248 | ListenerSP listener_sp) |
249 | : Process(target_sp, listener_sp), |
250 | m_debugserver_pid(LLDB_INVALID_PROCESS_ID0), m_register_info_sp(nullptr), |
251 | m_async_broadcaster(nullptr, "lldb.process.gdb-remote.async-broadcaster"), |
252 | m_async_listener_sp( |
253 | Listener::MakeListener("lldb.process.gdb-remote.async-listener")), |
254 | m_async_thread_state_mutex(), m_thread_ids(), m_thread_pcs(), |
255 | m_jstopinfo_sp(), m_jthreadsinfo_sp(), m_continue_c_tids(), |
256 | m_continue_C_tids(), m_continue_s_tids(), m_continue_S_tids(), |
257 | m_max_memory_size(0), m_remote_stub_max_memory_size(0), |
258 | m_addr_to_mmap_size(), m_thread_create_bp_sp(), |
259 | m_waiting_for_attach(false), |
260 | m_command_sp(), m_breakpoint_pc_offset(0), |
261 | m_initial_tid(LLDB_INVALID_THREAD_ID0), m_allow_flash_writes(false), |
262 | m_erased_flash_ranges(), m_vfork_in_progress(false) { |
263 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncThreadShouldExit, |
264 | "async thread should exit"); |
265 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncContinue, |
266 | "async thread continue"); |
267 | m_async_broadcaster.SetEventName(eBroadcastBitAsyncThreadDidExit, |
268 | "async thread did exit"); |
269 | |
270 | if (repro::Generator *g = repro::Reproducer::Instance().GetGenerator()) { |
271 | repro::GDBRemoteProvider &provider = |
272 | g->GetOrCreate<repro::GDBRemoteProvider>(); |
273 | m_gdb_comm.SetPacketRecorder(provider.GetNewPacketRecorder()); |
274 | } |
275 | |
276 | Log *log = GetLog(GDBRLog::Async); |
277 | |
278 | const uint32_t async_event_mask = |
279 | eBroadcastBitAsyncContinue | eBroadcastBitAsyncThreadShouldExit; |
280 | |
281 | if (m_async_listener_sp->StartListeningForEvents( |
282 | &m_async_broadcaster, async_event_mask) != async_event_mask) { |
283 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for " "m_async_broadcaster events", __FUNCTION__); } while (0) |
284 | "ProcessGDBRemote::%s failed to listen for "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for " "m_async_broadcaster events", __FUNCTION__); } while (0) |
285 | "m_async_broadcaster events",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for " "m_async_broadcaster events", __FUNCTION__); } while (0) |
286 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for " "m_async_broadcaster events", __FUNCTION__); } while (0); |
287 | } |
288 | |
289 | const uint32_t gdb_event_mask = Communication::eBroadcastBitReadThreadDidExit; |
290 | if (m_async_listener_sp->StartListeningForEvents( |
291 | &m_gdb_comm, gdb_event_mask) != gdb_event_mask) { |
292 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for m_gdb_comm events" , __FUNCTION__); } while (0) |
293 | "ProcessGDBRemote::%s failed to listen for m_gdb_comm events",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for m_gdb_comm events" , __FUNCTION__); } while (0) |
294 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s failed to listen for m_gdb_comm events" , __FUNCTION__); } while (0); |
295 | } |
296 | |
297 | const uint64_t timeout_seconds = |
298 | GetGlobalPluginProperties().GetPacketTimeout(); |
299 | if (timeout_seconds > 0) |
300 | m_gdb_comm.SetPacketTimeout(std::chrono::seconds(timeout_seconds)); |
301 | |
302 | m_use_g_packet_for_reading = |
303 | GetGlobalPluginProperties().GetUseGPacketForReading(); |
304 | } |
305 | |
306 | // Destructor |
307 | ProcessGDBRemote::~ProcessGDBRemote() { |
308 | // m_mach_process.UnregisterNotificationCallbacks (this); |
309 | Clear(); |
310 | // We need to call finalize on the process before destroying ourselves to |
311 | // make sure all of the broadcaster cleanup goes as planned. If we destruct |
312 | // this class, then Process::~Process() might have problems trying to fully |
313 | // destroy the broadcaster. |
314 | Finalize(); |
315 | |
316 | // The general Finalize is going to try to destroy the process and that |
317 | // SHOULD shut down the async thread. However, if we don't kill it it will |
318 | // get stranded and its connection will go away so when it wakes up it will |
319 | // crash. So kill it for sure here. |
320 | StopAsyncThread(); |
321 | KillDebugserverProcess(); |
322 | } |
323 | |
324 | bool ProcessGDBRemote::ParsePythonTargetDefinition( |
325 | const FileSpec &target_definition_fspec) { |
326 | ScriptInterpreter *interpreter = |
327 | GetTarget().GetDebugger().GetScriptInterpreter(); |
328 | Status error; |
329 | StructuredData::ObjectSP module_object_sp( |
330 | interpreter->LoadPluginModule(target_definition_fspec, error)); |
331 | if (module_object_sp) { |
332 | StructuredData::DictionarySP target_definition_sp( |
333 | interpreter->GetDynamicSettings(module_object_sp, &GetTarget(), |
334 | "gdb-server-target-definition", error)); |
335 | |
336 | if (target_definition_sp) { |
337 | StructuredData::ObjectSP target_object( |
338 | target_definition_sp->GetValueForKey("host-info")); |
339 | if (target_object) { |
340 | if (auto host_info_dict = target_object->GetAsDictionary()) { |
341 | StructuredData::ObjectSP triple_value = |
342 | host_info_dict->GetValueForKey("triple"); |
343 | if (auto triple_string_value = triple_value->GetAsString()) { |
344 | std::string triple_string = |
345 | std::string(triple_string_value->GetValue()); |
346 | ArchSpec host_arch(triple_string.c_str()); |
347 | if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture())) { |
348 | GetTarget().SetArchitecture(host_arch); |
349 | } |
350 | } |
351 | } |
352 | } |
353 | m_breakpoint_pc_offset = 0; |
354 | StructuredData::ObjectSP breakpoint_pc_offset_value = |
355 | target_definition_sp->GetValueForKey("breakpoint-pc-offset"); |
356 | if (breakpoint_pc_offset_value) { |
357 | if (auto breakpoint_pc_int_value = |
358 | breakpoint_pc_offset_value->GetAsInteger()) |
359 | m_breakpoint_pc_offset = breakpoint_pc_int_value->GetValue(); |
360 | } |
361 | |
362 | if (m_register_info_sp->SetRegisterInfo( |
363 | *target_definition_sp, GetTarget().GetArchitecture()) > 0) { |
364 | return true; |
365 | } |
366 | } |
367 | } |
368 | return false; |
369 | } |
370 | |
371 | static size_t SplitCommaSeparatedRegisterNumberString( |
372 | const llvm::StringRef &comma_separated_register_numbers, |
373 | std::vector<uint32_t> ®nums, int base) { |
374 | regnums.clear(); |
375 | for (llvm::StringRef x : llvm::split(comma_separated_register_numbers, ',')) { |
376 | uint32_t reg; |
377 | if (llvm::to_integer(x, reg, base)) |
378 | regnums.push_back(reg); |
379 | } |
380 | return regnums.size(); |
381 | } |
382 | |
383 | void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) { |
384 | if (!force && m_register_info_sp) |
385 | return; |
386 | |
387 | m_register_info_sp = std::make_shared<GDBRemoteDynamicRegisterInfo>(); |
388 | |
389 | // Check if qHostInfo specified a specific packet timeout for this |
390 | // connection. If so then lets update our setting so the user knows what the |
391 | // timeout is and can see it. |
392 | const auto host_packet_timeout = m_gdb_comm.GetHostDefaultPacketTimeout(); |
393 | if (host_packet_timeout > std::chrono::seconds(0)) { |
394 | GetGlobalPluginProperties().SetPacketTimeout(host_packet_timeout.count()); |
395 | } |
396 | |
397 | // Register info search order: |
398 | // 1 - Use the target definition python file if one is specified. |
399 | // 2 - If the target definition doesn't have any of the info from the |
400 | // target.xml (registers) then proceed to read the target.xml. |
401 | // 3 - Fall back on the qRegisterInfo packets. |
402 | // 4 - Use hardcoded defaults if available. |
403 | |
404 | FileSpec target_definition_fspec = |
405 | GetGlobalPluginProperties().GetTargetDefinitionFile(); |
406 | if (!FileSystem::Instance().Exists(target_definition_fspec)) { |
407 | // If the filename doesn't exist, it may be a ~ not having been expanded - |
408 | // try to resolve it. |
409 | FileSystem::Instance().Resolve(target_definition_fspec); |
410 | } |
411 | if (target_definition_fspec) { |
412 | // See if we can get register definitions from a python file |
413 | if (ParsePythonTargetDefinition(target_definition_fspec)) |
414 | return; |
415 | |
416 | Debugger::ReportError("target description file " + |
417 | target_definition_fspec.GetPath() + |
418 | " failed to parse", |
419 | GetTarget().GetDebugger().GetID()); |
420 | } |
421 | |
422 | const ArchSpec &target_arch = GetTarget().GetArchitecture(); |
423 | const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); |
424 | const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); |
425 | |
426 | // Use the process' architecture instead of the host arch, if available |
427 | ArchSpec arch_to_use; |
428 | if (remote_process_arch.IsValid()) |
429 | arch_to_use = remote_process_arch; |
430 | else |
431 | arch_to_use = remote_host_arch; |
432 | |
433 | if (!arch_to_use.IsValid()) |
434 | arch_to_use = target_arch; |
435 | |
436 | if (GetGDBServerRegisterInfo(arch_to_use)) |
437 | return; |
438 | |
439 | char packet[128]; |
440 | std::vector<DynamicRegisterInfo::Register> registers; |
441 | uint32_t reg_num = 0; |
442 | for (StringExtractorGDBRemote::ResponseType response_type = |
443 | StringExtractorGDBRemote::eResponse; |
444 | response_type == StringExtractorGDBRemote::eResponse; ++reg_num) { |
445 | const int packet_len = |
446 | ::snprintf(packet, sizeof(packet), "qRegisterInfo%x", reg_num); |
447 | assert(packet_len < (int)sizeof(packet))(static_cast <bool> (packet_len < (int)sizeof(packet )) ? void (0) : __assert_fail ("packet_len < (int)sizeof(packet)" , "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 447, __extension__ __PRETTY_FUNCTION__)); |
448 | UNUSED_IF_ASSERT_DISABLED(packet_len)((void)(packet_len)); |
449 | StringExtractorGDBRemote response; |
450 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet, response) == |
451 | GDBRemoteCommunication::PacketResult::Success) { |
452 | response_type = response.GetResponseType(); |
453 | if (response_type == StringExtractorGDBRemote::eResponse) { |
454 | llvm::StringRef name; |
455 | llvm::StringRef value; |
456 | DynamicRegisterInfo::Register reg_info; |
457 | |
458 | while (response.GetNameColonValue(name, value)) { |
459 | if (name.equals("name")) { |
460 | reg_info.name.SetString(value); |
461 | } else if (name.equals("alt-name")) { |
462 | reg_info.alt_name.SetString(value); |
463 | } else if (name.equals("bitsize")) { |
464 | if (!value.getAsInteger(0, reg_info.byte_size)) |
465 | reg_info.byte_size /= CHAR_BIT8; |
466 | } else if (name.equals("offset")) { |
467 | value.getAsInteger(0, reg_info.byte_offset); |
468 | } else if (name.equals("encoding")) { |
469 | const Encoding encoding = Args::StringToEncoding(value); |
470 | if (encoding != eEncodingInvalid) |
471 | reg_info.encoding = encoding; |
472 | } else if (name.equals("format")) { |
473 | if (!OptionArgParser::ToFormat(value.str().c_str(), reg_info.format, nullptr) |
474 | .Success()) |
475 | reg_info.format = |
476 | llvm::StringSwitch<Format>(value) |
477 | .Case("binary", eFormatBinary) |
478 | .Case("decimal", eFormatDecimal) |
479 | .Case("hex", eFormatHex) |
480 | .Case("float", eFormatFloat) |
481 | .Case("vector-sint8", eFormatVectorOfSInt8) |
482 | .Case("vector-uint8", eFormatVectorOfUInt8) |
483 | .Case("vector-sint16", eFormatVectorOfSInt16) |
484 | .Case("vector-uint16", eFormatVectorOfUInt16) |
485 | .Case("vector-sint32", eFormatVectorOfSInt32) |
486 | .Case("vector-uint32", eFormatVectorOfUInt32) |
487 | .Case("vector-float32", eFormatVectorOfFloat32) |
488 | .Case("vector-uint64", eFormatVectorOfUInt64) |
489 | .Case("vector-uint128", eFormatVectorOfUInt128) |
490 | .Default(eFormatInvalid); |
491 | } else if (name.equals("set")) { |
492 | reg_info.set_name.SetString(value); |
493 | } else if (name.equals("gcc") || name.equals("ehframe")) { |
494 | value.getAsInteger(0, reg_info.regnum_ehframe); |
495 | } else if (name.equals("dwarf")) { |
496 | value.getAsInteger(0, reg_info.regnum_dwarf); |
497 | } else if (name.equals("generic")) { |
498 | reg_info.regnum_generic = Args::StringToGenericRegister(value); |
499 | } else if (name.equals("container-regs")) { |
500 | SplitCommaSeparatedRegisterNumberString(value, reg_info.value_regs, 16); |
501 | } else if (name.equals("invalidate-regs")) { |
502 | SplitCommaSeparatedRegisterNumberString(value, reg_info.invalidate_regs, 16); |
503 | } |
504 | } |
505 | |
506 | assert(reg_info.byte_size != 0)(static_cast <bool> (reg_info.byte_size != 0) ? void (0 ) : __assert_fail ("reg_info.byte_size != 0", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 506, __extension__ __PRETTY_FUNCTION__)); |
507 | registers.push_back(reg_info); |
508 | } else { |
509 | break; // ensure exit before reg_num is incremented |
510 | } |
511 | } else { |
512 | break; |
513 | } |
514 | } |
515 | |
516 | if (registers.empty()) |
517 | registers = GetFallbackRegisters(arch_to_use); |
518 | |
519 | AddRemoteRegisters(registers, arch_to_use); |
520 | } |
521 | |
522 | Status ProcessGDBRemote::WillLaunch(lldb_private::Module *module) { |
523 | return WillLaunchOrAttach(); |
524 | } |
525 | |
526 | Status ProcessGDBRemote::WillAttachToProcessWithID(lldb::pid_t pid) { |
527 | return WillLaunchOrAttach(); |
528 | } |
529 | |
530 | Status ProcessGDBRemote::WillAttachToProcessWithName(const char *process_name, |
531 | bool wait_for_launch) { |
532 | return WillLaunchOrAttach(); |
533 | } |
534 | |
535 | Status ProcessGDBRemote::DoConnectRemote(llvm::StringRef remote_url) { |
536 | Log *log = GetLog(GDBRLog::Process); |
537 | |
538 | Status error(WillLaunchOrAttach()); |
539 | if (error.Fail()) |
540 | return error; |
541 | |
542 | error = ConnectToDebugserver(remote_url); |
543 | if (error.Fail()) |
544 | return error; |
545 | |
546 | StartAsyncThread(); |
547 | |
548 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
549 | if (pid == LLDB_INVALID_PROCESS_ID0) { |
550 | // We don't have a valid process ID, so note that we are connected and |
551 | // could now request to launch or attach, or get remote process listings... |
552 | SetPrivateState(eStateConnected); |
553 | } else { |
554 | // We have a valid process |
555 | SetID(pid); |
556 | GetThreadList(); |
557 | StringExtractorGDBRemote response; |
558 | if (m_gdb_comm.GetStopReply(response)) { |
559 | SetLastStopPacket(response); |
560 | |
561 | Target &target = GetTarget(); |
562 | if (!target.GetArchitecture().IsValid()) { |
563 | if (m_gdb_comm.GetProcessArchitecture().IsValid()) { |
564 | target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); |
565 | } else { |
566 | if (m_gdb_comm.GetHostArchitecture().IsValid()) { |
567 | target.SetArchitecture(m_gdb_comm.GetHostArchitecture()); |
568 | } |
569 | } |
570 | } |
571 | |
572 | // The remote stub may know about the "main binary" in |
573 | // the context of a firmware debug session, and can |
574 | // give us a UUID and an address/slide of where the |
575 | // binary is loaded in memory. |
576 | UUID standalone_uuid; |
577 | addr_t standalone_value; |
578 | bool standalone_value_is_offset; |
579 | if (m_gdb_comm.GetProcessStandaloneBinary( |
580 | standalone_uuid, standalone_value, standalone_value_is_offset)) { |
581 | ModuleSP module_sp; |
582 | |
583 | if (standalone_uuid.IsValid()) { |
584 | ModuleSpec module_spec; |
585 | module_spec.GetUUID() = standalone_uuid; |
586 | |
587 | // Look up UUID in global module cache before attempting |
588 | // a more expensive search. |
589 | Status error = ModuleList::GetSharedModule(module_spec, module_sp, |
590 | nullptr, nullptr, nullptr); |
591 | |
592 | if (!module_sp) { |
593 | // Force a an external lookup, if that tool is available. |
594 | if (!module_spec.GetSymbolFileSpec()) { |
595 | Status error; |
596 | Symbols::DownloadObjectAndSymbolFile(module_spec, error, true); |
597 | } |
598 | |
599 | if (FileSystem::Instance().Exists(module_spec.GetFileSpec())) { |
600 | module_sp = std::make_shared<Module>(module_spec); |
601 | } |
602 | } |
603 | |
604 | // If we couldn't find the binary anywhere else, as a last resort, |
605 | // read it out of memory. |
606 | if (!module_sp.get() && standalone_value != LLDB_INVALID_ADDRESS(18446744073709551615UL) && |
607 | !standalone_value_is_offset) { |
608 | char namebuf[80]; |
609 | snprintf(namebuf, sizeof(namebuf), "mem-image-0x%" PRIx64"l" "x", |
610 | standalone_value); |
611 | module_sp = |
612 | ReadModuleFromMemory(FileSpec(namebuf), standalone_value); |
613 | } |
614 | |
615 | Log *log = GetLog(LLDBLog::DynamicLoader); |
616 | if (module_sp.get()) { |
617 | target.GetImages().AppendIfNeeded(module_sp, false); |
618 | |
619 | bool changed = false; |
620 | if (module_sp->GetObjectFile()) { |
621 | if (standalone_value != LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
622 | if (log) |
623 | log->Printf("Loading binary UUID %s at %s 0x%" PRIx64"l" "x", |
624 | standalone_uuid.GetAsString().c_str(), |
625 | standalone_value_is_offset ? "offset" : "address", |
626 | standalone_value); |
627 | module_sp->SetLoadAddress(target, standalone_value, |
628 | standalone_value_is_offset, changed); |
629 | } else { |
630 | // No address/offset/slide, load the binary at file address, |
631 | // offset 0. |
632 | if (log) |
633 | log->Printf("Loading binary UUID %s at file address", |
634 | standalone_uuid.GetAsString().c_str()); |
635 | const bool value_is_slide = true; |
636 | module_sp->SetLoadAddress(target, 0, value_is_slide, changed); |
637 | } |
638 | } else { |
639 | // In-memory image, load at its true address, offset 0. |
640 | if (log) |
641 | log->Printf("Loading binary UUID %s from memory", |
642 | standalone_uuid.GetAsString().c_str()); |
643 | const bool value_is_slide = true; |
644 | module_sp->SetLoadAddress(target, 0, value_is_slide, changed); |
645 | } |
646 | |
647 | ModuleList added_module; |
648 | added_module.Append(module_sp, false); |
649 | target.ModulesDidLoad(added_module); |
650 | } else { |
651 | if (log) |
652 | log->Printf("Unable to find binary with UUID %s and load it at " |
653 | "%s 0x%" PRIx64"l" "x", |
654 | standalone_uuid.GetAsString().c_str(), |
655 | standalone_value_is_offset ? "offset" : "address", |
656 | standalone_value); |
657 | } |
658 | } |
659 | } |
660 | |
661 | const StateType state = SetThreadStopInfo(response); |
662 | if (state != eStateInvalid) { |
663 | SetPrivateState(state); |
664 | } else |
665 | error.SetErrorStringWithFormat( |
666 | "Process %" PRIu64"l" "u" " was reported after connecting to " |
667 | "'%s', but state was not stopped: %s", |
668 | pid, remote_url.str().c_str(), StateAsCString(state)); |
669 | } else |
670 | error.SetErrorStringWithFormat("Process %" PRIu64"l" "u" |
671 | " was reported after connecting to '%s', " |
672 | "but no stop reply packet was received", |
673 | pid, remote_url.str().c_str()); |
674 | } |
675 | |
676 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
677 | "ProcessGDBRemote::%s pid %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
678 | ": normalizing target architecture initial triple: %s "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
679 | "(GetTarget().GetArchitecture().IsValid() %s, "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
680 | "m_gdb_comm.GetHostArchitecture().IsValid(): %s)",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
681 | __FUNCTION__, GetID(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
682 | GetTarget().GetArchitecture().GetTriple().getTriple().c_str(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
683 | GetTarget().GetArchitecture().IsValid() ? "true" : "false",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0) |
684 | m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalizing target architecture initial triple: %s " "(GetTarget().GetArchitecture().IsValid() %s, " "m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__ , GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str(), GetTarget().GetArchitecture().IsValid() ? "true" : "false", m_gdb_comm.GetHostArchitecture().IsValid() ? "true" : "false"); } while (0); |
685 | |
686 | if (error.Success() && !GetTarget().GetArchitecture().IsValid() && |
687 | m_gdb_comm.GetHostArchitecture().IsValid()) { |
688 | // Prefer the *process'* architecture over that of the *host*, if |
689 | // available. |
690 | if (m_gdb_comm.GetProcessArchitecture().IsValid()) |
691 | GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); |
692 | else |
693 | GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); |
694 | } |
695 | |
696 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalized target architecture triple: %s", __FUNCTION__, GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str()); } while (0) |
697 | "ProcessGDBRemote::%s pid %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalized target architecture triple: %s", __FUNCTION__, GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str()); } while (0) |
698 | ": normalized target architecture triple: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalized target architecture triple: %s", __FUNCTION__, GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str()); } while (0) |
699 | __FUNCTION__, GetID(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalized target architecture triple: %s", __FUNCTION__, GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str()); } while (0) |
700 | GetTarget().GetArchitecture().GetTriple().getTriple().c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s pid %" "l" "u" ": normalized target architecture triple: %s", __FUNCTION__, GetID(), GetTarget().GetArchitecture().GetTriple().getTriple ().c_str()); } while (0); |
701 | |
702 | return error; |
703 | } |
704 | |
705 | Status ProcessGDBRemote::WillLaunchOrAttach() { |
706 | Status error; |
707 | m_stdio_communication.Clear(); |
708 | return error; |
709 | } |
710 | |
711 | // Process Control |
712 | Status ProcessGDBRemote::DoLaunch(lldb_private::Module *exe_module, |
713 | ProcessLaunchInfo &launch_info) { |
714 | Log *log = GetLog(GDBRLog::Process); |
715 | Status error; |
716 | |
717 | LLDB_LOGF(log, "ProcessGDBRemote::%s() entered", __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s() entered", __FUNCTION__ ); } while (0); |
718 | |
719 | uint32_t launch_flags = launch_info.GetFlags().Get(); |
720 | FileSpec stdin_file_spec{}; |
721 | FileSpec stdout_file_spec{}; |
722 | FileSpec stderr_file_spec{}; |
723 | FileSpec working_dir = launch_info.GetWorkingDirectory(); |
724 | |
725 | const FileAction *file_action; |
726 | file_action = launch_info.GetFileActionForFD(STDIN_FILENO0); |
727 | if (file_action) { |
728 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
729 | stdin_file_spec = file_action->GetFileSpec(); |
730 | } |
731 | file_action = launch_info.GetFileActionForFD(STDOUT_FILENO1); |
732 | if (file_action) { |
733 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
734 | stdout_file_spec = file_action->GetFileSpec(); |
735 | } |
736 | file_action = launch_info.GetFileActionForFD(STDERR_FILENO2); |
737 | if (file_action) { |
738 | if (file_action->GetAction() == FileAction::eFileActionOpen) |
739 | stderr_file_spec = file_action->GetFileSpec(); |
740 | } |
741 | |
742 | if (log) { |
743 | if (stdin_file_spec || stdout_file_spec || stderr_file_spec) |
744 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
745 | "ProcessGDBRemote::%s provided with STDIO paths via "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
746 | "launch_info: stdin=%s, stdout=%s, stderr=%s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
747 | __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
748 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
749 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
750 | stderr_file_spec ? stderr_file_spec.GetCString() : "<null>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s provided with STDIO paths via " "launch_info: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0); |
751 | else |
752 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no STDIO paths given via launch_info" , __FUNCTION__); } while (0) |
753 | "ProcessGDBRemote::%s no STDIO paths given via launch_info",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no STDIO paths given via launch_info" , __FUNCTION__); } while (0) |
754 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no STDIO paths given via launch_info" , __FUNCTION__); } while (0); |
755 | } |
756 | |
757 | const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; |
758 | if (stdin_file_spec || disable_stdio) { |
759 | // the inferior will be reading stdin from the specified file or stdio is |
760 | // completely disabled |
761 | m_stdin_forward = false; |
762 | } else { |
763 | m_stdin_forward = true; |
764 | } |
765 | |
766 | // ::LogSetBitMask (GDBR_LOG_DEFAULT); |
767 | // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | |
768 | // LLDB_LOG_OPTION_PREPEND_TIMESTAMP | |
769 | // LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); |
770 | // ::LogSetLogFile ("/dev/stdout"); |
771 | |
772 | error = EstablishConnectionIfNeeded(launch_info); |
773 | if (error.Success()) { |
774 | PseudoTerminal pty; |
775 | const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; |
776 | |
777 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
778 | if (disable_stdio) { |
779 | // set to /dev/null unless redirected to a file above |
780 | if (!stdin_file_spec) |
781 | stdin_file_spec.SetFile(FileSystem::DEV_NULL, |
782 | FileSpec::Style::native); |
783 | if (!stdout_file_spec) |
784 | stdout_file_spec.SetFile(FileSystem::DEV_NULL, |
785 | FileSpec::Style::native); |
786 | if (!stderr_file_spec) |
787 | stderr_file_spec.SetFile(FileSystem::DEV_NULL, |
788 | FileSpec::Style::native); |
789 | } else if (platform_sp && platform_sp->IsHost()) { |
790 | // If the debugserver is local and we aren't disabling STDIO, lets use |
791 | // a pseudo terminal to instead of relying on the 'O' packets for stdio |
792 | // since 'O' packets can really slow down debugging if the inferior |
793 | // does a lot of output. |
794 | if ((!stdin_file_spec || !stdout_file_spec || !stderr_file_spec) && |
795 | !errorToBool(pty.OpenFirstAvailablePrimary(O_RDWR02 | O_NOCTTY0400))) { |
796 | FileSpec secondary_name(pty.GetSecondaryName()); |
797 | |
798 | if (!stdin_file_spec) |
799 | stdin_file_spec = secondary_name; |
800 | |
801 | if (!stdout_file_spec) |
802 | stdout_file_spec = secondary_name; |
803 | |
804 | if (!stderr_file_spec) |
805 | stderr_file_spec = secondary_name; |
806 | } |
807 | LLDB_LOGF(do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
808 | log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
809 | "ProcessGDBRemote::%s adjusted STDIO paths for local platform "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
810 | "(IsHost() is true) using secondary: stdin=%s, stdout=%s, "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
811 | "stderr=%s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
812 | __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
813 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
814 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0) |
815 | stderr_file_spec ? stderr_file_spec.GetCString() : "<null>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s adjusted STDIO paths for local platform " "(IsHost() is true) using secondary: stdin=%s, stdout=%s, " "stderr=%s" , __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString( ) : "<null>", stdout_file_spec ? stdout_file_spec.GetCString () : "<null>", stderr_file_spec ? stderr_file_spec.GetCString () : "<null>"); } while (0); |
816 | } |
817 | |
818 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
819 | "ProcessGDBRemote::%s final STDIO paths after all "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
820 | "adjustments: stdin=%s, stdout=%s, stderr=%s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
821 | __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
822 | stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
823 | stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0) |
824 | stderr_file_spec ? stderr_file_spec.GetCString() : "<null>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s final STDIO paths after all " "adjustments: stdin=%s, stdout=%s, stderr=%s", __FUNCTION__, stdin_file_spec ? stdin_file_spec.GetCString() : "<null>" , stdout_file_spec ? stdout_file_spec.GetCString() : "<null>" , stderr_file_spec ? stderr_file_spec.GetCString() : "<null>" ); } while (0); |
825 | |
826 | if (stdin_file_spec) |
827 | m_gdb_comm.SetSTDIN(stdin_file_spec); |
828 | if (stdout_file_spec) |
829 | m_gdb_comm.SetSTDOUT(stdout_file_spec); |
830 | if (stderr_file_spec) |
831 | m_gdb_comm.SetSTDERR(stderr_file_spec); |
832 | |
833 | m_gdb_comm.SetDisableASLR(launch_flags & eLaunchFlagDisableASLR); |
834 | m_gdb_comm.SetDetachOnError(launch_flags & eLaunchFlagDetachOnError); |
835 | |
836 | m_gdb_comm.SendLaunchArchPacket( |
837 | GetTarget().GetArchitecture().GetArchitectureName()); |
838 | |
839 | const char *launch_event_data = launch_info.GetLaunchEventData(); |
840 | if (launch_event_data != nullptr && *launch_event_data != '\0') |
841 | m_gdb_comm.SendLaunchEventDataPacket(launch_event_data); |
842 | |
843 | if (working_dir) { |
844 | m_gdb_comm.SetWorkingDir(working_dir); |
845 | } |
846 | |
847 | // Send the environment and the program + arguments after we connect |
848 | m_gdb_comm.SendEnvironment(launch_info.GetEnvironment()); |
849 | |
850 | { |
851 | // Scope for the scoped timeout object |
852 | GDBRemoteCommunication::ScopedTimeout timeout(m_gdb_comm, |
853 | std::chrono::seconds(10)); |
854 | |
855 | int arg_packet_err = m_gdb_comm.SendArgumentsPacket(launch_info); |
856 | if (arg_packet_err == 0) { |
857 | std::string error_str; |
858 | if (m_gdb_comm.GetLaunchSuccess(error_str)) { |
859 | SetID(m_gdb_comm.GetCurrentProcessID()); |
860 | } else { |
861 | error.SetErrorString(error_str.c_str()); |
862 | } |
863 | } else { |
864 | error.SetErrorStringWithFormat("'A' packet returned an error: %i", |
865 | arg_packet_err); |
866 | } |
867 | } |
868 | |
869 | if (GetID() == LLDB_INVALID_PROCESS_ID0) { |
870 | LLDB_LOGF(log, "failed to connect to debugserver: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to connect to debugserver: %s" , error.AsCString()); } while (0) |
871 | error.AsCString())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to connect to debugserver: %s" , error.AsCString()); } while (0); |
872 | KillDebugserverProcess(); |
873 | return error; |
874 | } |
875 | |
876 | StringExtractorGDBRemote response; |
877 | if (m_gdb_comm.GetStopReply(response)) { |
878 | SetLastStopPacket(response); |
879 | |
880 | const ArchSpec &process_arch = m_gdb_comm.GetProcessArchitecture(); |
881 | |
882 | if (process_arch.IsValid()) { |
883 | GetTarget().MergeArchitecture(process_arch); |
884 | } else { |
885 | const ArchSpec &host_arch = m_gdb_comm.GetHostArchitecture(); |
886 | if (host_arch.IsValid()) |
887 | GetTarget().MergeArchitecture(host_arch); |
888 | } |
889 | |
890 | SetPrivateState(SetThreadStopInfo(response)); |
891 | |
892 | if (!disable_stdio) { |
893 | if (pty.GetPrimaryFileDescriptor() != PseudoTerminal::invalid_fd) |
894 | SetSTDIOFileDescriptor(pty.ReleasePrimaryFileDescriptor()); |
895 | } |
896 | } |
897 | } else { |
898 | LLDB_LOGF(log, "failed to connect to debugserver: %s", error.AsCString())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to connect to debugserver: %s" , error.AsCString()); } while (0); |
899 | } |
900 | return error; |
901 | } |
902 | |
903 | Status ProcessGDBRemote::ConnectToDebugserver(llvm::StringRef connect_url) { |
904 | Status error; |
905 | // Only connect if we have a valid connect URL |
906 | Log *log = GetLog(GDBRLog::Process); |
907 | |
908 | if (!connect_url.empty()) { |
909 | LLDB_LOGF(log, "ProcessGDBRemote::%s Connecting to %s", __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s Connecting to %s" , __FUNCTION__, connect_url.str().c_str()); } while (0) |
910 | connect_url.str().c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s Connecting to %s" , __FUNCTION__, connect_url.str().c_str()); } while (0); |
911 | std::unique_ptr<ConnectionFileDescriptor> conn_up( |
912 | new ConnectionFileDescriptor()); |
913 | if (conn_up) { |
914 | const uint32_t max_retry_count = 50; |
915 | uint32_t retry_count = 0; |
916 | while (!m_gdb_comm.IsConnected()) { |
917 | if (conn_up->Connect(connect_url, &error) == eConnectionStatusSuccess) { |
918 | m_gdb_comm.SetConnection(std::move(conn_up)); |
919 | break; |
920 | } |
921 | |
922 | retry_count++; |
923 | |
924 | if (retry_count >= max_retry_count) |
925 | break; |
926 | |
927 | std::this_thread::sleep_for(std::chrono::milliseconds(100)); |
928 | } |
929 | } |
930 | } |
931 | |
932 | if (!m_gdb_comm.IsConnected()) { |
933 | if (error.Success()) |
934 | error.SetErrorString("not connected to remote gdb server"); |
935 | return error; |
936 | } |
937 | |
938 | // We always seem to be able to open a connection to a local port so we need |
939 | // to make sure we can then send data to it. If we can't then we aren't |
940 | // actually connected to anything, so try and do the handshake with the |
941 | // remote GDB server and make sure that goes alright. |
942 | if (!m_gdb_comm.HandshakeWithServer(&error)) { |
943 | m_gdb_comm.Disconnect(); |
944 | if (error.Success()) |
945 | error.SetErrorString("not connected to remote gdb server"); |
946 | return error; |
947 | } |
948 | |
949 | m_gdb_comm.GetEchoSupported(); |
950 | m_gdb_comm.GetThreadSuffixSupported(); |
951 | m_gdb_comm.GetListThreadsInStopReplySupported(); |
952 | m_gdb_comm.GetHostInfo(); |
953 | m_gdb_comm.GetVContSupported('c'); |
954 | m_gdb_comm.GetVAttachOrWaitSupported(); |
955 | m_gdb_comm.EnableErrorStringInPacket(); |
956 | |
957 | size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); |
958 | for (size_t idx = 0; idx < num_cmds; idx++) { |
959 | StringExtractorGDBRemote response; |
960 | m_gdb_comm.SendPacketAndWaitForResponse( |
961 | GetExtraStartupCommands().GetArgumentAtIndex(idx), response); |
962 | } |
963 | return error; |
964 | } |
965 | |
966 | void ProcessGDBRemote::DidLaunchOrAttach(ArchSpec &process_arch) { |
967 | Log *log = GetLog(GDBRLog::Process); |
968 | BuildDynamicRegisterInfo(false); |
969 | |
970 | // See if the GDB server supports qHostInfo or qProcessInfo packets. Prefer |
971 | // qProcessInfo as it will be more specific to our process. |
972 | |
973 | const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); |
974 | if (remote_process_arch.IsValid()) { |
975 | process_arch = remote_process_arch; |
976 | LLDB_LOG(log, "gdb-remote had process architecture, using {0} {1}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote had process architecture, using {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
977 | process_arch.GetArchitectureName(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote had process architecture, using {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
978 | process_arch.GetTriple().getTriple())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote had process architecture, using {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0); |
979 | } else { |
980 | process_arch = m_gdb_comm.GetHostArchitecture(); |
981 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote did not have process architecture, using gdb-remote " "host architecture {0} {1}", process_arch.GetArchitectureName (), process_arch.GetTriple().getTriple()); } while (0) |
982 | "gdb-remote did not have process architecture, using gdb-remote "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote did not have process architecture, using gdb-remote " "host architecture {0} {1}", process_arch.GetArchitectureName (), process_arch.GetTriple().getTriple()); } while (0) |
983 | "host architecture {0} {1}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote did not have process architecture, using gdb-remote " "host architecture {0} {1}", process_arch.GetArchitectureName (), process_arch.GetTriple().getTriple()); } while (0) |
984 | process_arch.GetArchitectureName(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote did not have process architecture, using gdb-remote " "host architecture {0} {1}", process_arch.GetArchitectureName (), process_arch.GetTriple().getTriple()); } while (0) |
985 | process_arch.GetTriple().getTriple())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "gdb-remote did not have process architecture, using gdb-remote " "host architecture {0} {1}", process_arch.GetArchitectureName (), process_arch.GetTriple().getTriple()); } while (0); |
986 | } |
987 | |
988 | if (int addresssable_bits = m_gdb_comm.GetAddressingBits()) { |
989 | lldb::addr_t address_mask = ~((1ULL << addresssable_bits) - 1); |
990 | SetCodeAddressMask(address_mask); |
991 | SetDataAddressMask(address_mask); |
992 | } |
993 | |
994 | if (process_arch.IsValid()) { |
995 | const ArchSpec &target_arch = GetTarget().GetArchitecture(); |
996 | if (target_arch.IsValid()) { |
997 | LLDB_LOG(log, "analyzing target arch, currently {0} {1}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "analyzing target arch, currently {0} {1}", target_arch .GetArchitectureName(), target_arch.GetTriple().getTriple()); } while (0) |
998 | target_arch.GetArchitectureName(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "analyzing target arch, currently {0} {1}", target_arch .GetArchitectureName(), target_arch.GetTriple().getTriple()); } while (0) |
999 | target_arch.GetTriple().getTriple())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "analyzing target arch, currently {0} {1}", target_arch .GetArchitectureName(), target_arch.GetTriple().getTriple()); } while (0); |
1000 | |
1001 | // If the remote host is ARM and we have apple as the vendor, then |
1002 | // ARM executables and shared libraries can have mixed ARM |
1003 | // architectures. |
1004 | // You can have an armv6 executable, and if the host is armv7, then the |
1005 | // system will load the best possible architecture for all shared |
1006 | // libraries it has, so we really need to take the remote host |
1007 | // architecture as our defacto architecture in this case. |
1008 | |
1009 | if ((process_arch.GetMachine() == llvm::Triple::arm || |
1010 | process_arch.GetMachine() == llvm::Triple::thumb) && |
1011 | process_arch.GetTriple().getVendor() == llvm::Triple::Apple) { |
1012 | GetTarget().SetArchitecture(process_arch); |
1013 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "remote process is ARM/Apple, " "setting target arch to {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
1014 | "remote process is ARM/Apple, "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "remote process is ARM/Apple, " "setting target arch to {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
1015 | "setting target arch to {0} {1}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "remote process is ARM/Apple, " "setting target arch to {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
1016 | process_arch.GetArchitectureName(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "remote process is ARM/Apple, " "setting target arch to {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0) |
1017 | process_arch.GetTriple().getTriple())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "remote process is ARM/Apple, " "setting target arch to {0} {1}" , process_arch.GetArchitectureName(), process_arch.GetTriple( ).getTriple()); } while (0); |
1018 | } else { |
1019 | // Fill in what is missing in the triple |
1020 | const llvm::Triple &remote_triple = process_arch.GetTriple(); |
1021 | llvm::Triple new_target_triple = target_arch.GetTriple(); |
1022 | if (new_target_triple.getVendorName().size() == 0) { |
1023 | new_target_triple.setVendor(remote_triple.getVendor()); |
1024 | |
1025 | if (new_target_triple.getOSName().size() == 0) { |
1026 | new_target_triple.setOS(remote_triple.getOS()); |
1027 | |
1028 | if (new_target_triple.getEnvironmentName().size() == 0) |
1029 | new_target_triple.setEnvironment(remote_triple.getEnvironment()); |
1030 | } |
1031 | |
1032 | ArchSpec new_target_arch = target_arch; |
1033 | new_target_arch.SetTriple(new_target_triple); |
1034 | GetTarget().SetArchitecture(new_target_arch); |
1035 | } |
1036 | } |
1037 | |
1038 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "final target arch after adjustments for remote architecture: " "{0} {1}", target_arch.GetArchitectureName(), target_arch.GetTriple ().getTriple()); } while (0) |
1039 | "final target arch after adjustments for remote architecture: "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "final target arch after adjustments for remote architecture: " "{0} {1}", target_arch.GetArchitectureName(), target_arch.GetTriple ().getTriple()); } while (0) |
1040 | "{0} {1}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "final target arch after adjustments for remote architecture: " "{0} {1}", target_arch.GetArchitectureName(), target_arch.GetTriple ().getTriple()); } while (0) |
1041 | target_arch.GetArchitectureName(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "final target arch after adjustments for remote architecture: " "{0} {1}", target_arch.GetArchitectureName(), target_arch.GetTriple ().getTriple()); } while (0) |
1042 | target_arch.GetTriple().getTriple())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "final target arch after adjustments for remote architecture: " "{0} {1}", target_arch.GetArchitectureName(), target_arch.GetTriple ().getTriple()); } while (0); |
1043 | } else { |
1044 | // The target doesn't have a valid architecture yet, set it from the |
1045 | // architecture we got from the remote GDB server |
1046 | GetTarget().SetArchitecture(process_arch); |
1047 | } |
1048 | } |
1049 | |
1050 | MaybeLoadExecutableModule(); |
1051 | |
1052 | // Find out which StructuredDataPlugins are supported by the debug monitor. |
1053 | // These plugins transmit data over async $J packets. |
1054 | if (StructuredData::Array *supported_packets = |
1055 | m_gdb_comm.GetSupportedStructuredDataPlugins()) |
1056 | MapSupportedStructuredDataPlugins(*supported_packets); |
1057 | |
1058 | // If connected to LLDB ("native-signals+"), use signal defs for |
1059 | // the remote platform. If connected to GDB, just use the standard set. |
1060 | if (!m_gdb_comm.UsesNativeSignals()) { |
1061 | SetUnixSignals(std::make_shared<GDBRemoteSignals>()); |
1062 | } else { |
1063 | PlatformSP platform_sp = GetTarget().GetPlatform(); |
1064 | if (platform_sp && platform_sp->IsConnected()) |
1065 | SetUnixSignals(platform_sp->GetUnixSignals()); |
1066 | else |
1067 | SetUnixSignals(UnixSignals::Create(GetTarget().GetArchitecture())); |
1068 | } |
1069 | } |
1070 | |
1071 | void ProcessGDBRemote::MaybeLoadExecutableModule() { |
1072 | ModuleSP module_sp = GetTarget().GetExecutableModule(); |
1073 | if (!module_sp) |
1074 | return; |
1075 | |
1076 | llvm::Optional<QOffsets> offsets = m_gdb_comm.GetQOffsets(); |
1077 | if (!offsets) |
1078 | return; |
1079 | |
1080 | bool is_uniform = |
1081 | size_t(llvm::count(offsets->offsets, offsets->offsets[0])) == |
1082 | offsets->offsets.size(); |
1083 | if (!is_uniform) |
1084 | return; // TODO: Handle non-uniform responses. |
1085 | |
1086 | bool changed = false; |
1087 | module_sp->SetLoadAddress(GetTarget(), offsets->offsets[0], |
1088 | /*value_is_offset=*/true, changed); |
1089 | if (changed) { |
1090 | ModuleList list; |
1091 | list.Append(module_sp); |
1092 | m_process->GetTarget().ModulesDidLoad(list); |
1093 | } |
1094 | } |
1095 | |
1096 | void ProcessGDBRemote::DidLaunch() { |
1097 | ArchSpec process_arch; |
1098 | DidLaunchOrAttach(process_arch); |
1099 | } |
1100 | |
1101 | Status ProcessGDBRemote::DoAttachToProcessWithID( |
1102 | lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) { |
1103 | Log *log = GetLog(GDBRLog::Process); |
1104 | Status error; |
1105 | |
1106 | LLDB_LOGF(log, "ProcessGDBRemote::%s()", __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s()", __FUNCTION__ ); } while (0); |
1107 | |
1108 | // Clear out and clean up from any current state |
1109 | Clear(); |
1110 | if (attach_pid != LLDB_INVALID_PROCESS_ID0) { |
1111 | error = EstablishConnectionIfNeeded(attach_info); |
1112 | if (error.Success()) { |
1113 | m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError()); |
1114 | |
1115 | char packet[64]; |
1116 | const int packet_len = |
1117 | ::snprintf(packet, sizeof(packet), "vAttach;%" PRIx64"l" "x", attach_pid); |
1118 | SetID(attach_pid); |
1119 | m_async_broadcaster.BroadcastEvent( |
1120 | eBroadcastBitAsyncContinue, new EventDataBytes(packet, packet_len)); |
1121 | } else |
1122 | SetExitStatus(-1, error.AsCString()); |
1123 | } |
1124 | |
1125 | return error; |
1126 | } |
1127 | |
1128 | Status ProcessGDBRemote::DoAttachToProcessWithName( |
1129 | const char *process_name, const ProcessAttachInfo &attach_info) { |
1130 | Status error; |
1131 | // Clear out and clean up from any current state |
1132 | Clear(); |
1133 | |
1134 | if (process_name && process_name[0]) { |
1135 | error = EstablishConnectionIfNeeded(attach_info); |
1136 | if (error.Success()) { |
1137 | StreamString packet; |
1138 | |
1139 | m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError()); |
1140 | |
1141 | if (attach_info.GetWaitForLaunch()) { |
1142 | if (!m_gdb_comm.GetVAttachOrWaitSupported()) { |
1143 | packet.PutCString("vAttachWait"); |
1144 | } else { |
1145 | if (attach_info.GetIgnoreExisting()) |
1146 | packet.PutCString("vAttachWait"); |
1147 | else |
1148 | packet.PutCString("vAttachOrWait"); |
1149 | } |
1150 | } else |
1151 | packet.PutCString("vAttachName"); |
1152 | packet.PutChar(';'); |
1153 | packet.PutBytesAsRawHex8(process_name, strlen(process_name), |
1154 | endian::InlHostByteOrder(), |
1155 | endian::InlHostByteOrder()); |
1156 | |
1157 | m_async_broadcaster.BroadcastEvent( |
1158 | eBroadcastBitAsyncContinue, |
1159 | new EventDataBytes(packet.GetString().data(), packet.GetSize())); |
1160 | |
1161 | } else |
1162 | SetExitStatus(-1, error.AsCString()); |
1163 | } |
1164 | return error; |
1165 | } |
1166 | |
1167 | llvm::Expected<TraceSupportedResponse> ProcessGDBRemote::TraceSupported() { |
1168 | return m_gdb_comm.SendTraceSupported(GetInterruptTimeout()); |
1169 | } |
1170 | |
1171 | llvm::Error ProcessGDBRemote::TraceStop(const TraceStopRequest &request) { |
1172 | return m_gdb_comm.SendTraceStop(request, GetInterruptTimeout()); |
1173 | } |
1174 | |
1175 | llvm::Error ProcessGDBRemote::TraceStart(const llvm::json::Value &request) { |
1176 | return m_gdb_comm.SendTraceStart(request, GetInterruptTimeout()); |
1177 | } |
1178 | |
1179 | llvm::Expected<std::string> |
1180 | ProcessGDBRemote::TraceGetState(llvm::StringRef type) { |
1181 | return m_gdb_comm.SendTraceGetState(type, GetInterruptTimeout()); |
1182 | } |
1183 | |
1184 | llvm::Expected<std::vector<uint8_t>> |
1185 | ProcessGDBRemote::TraceGetBinaryData(const TraceGetBinaryDataRequest &request) { |
1186 | return m_gdb_comm.SendTraceGetBinaryData(request, GetInterruptTimeout()); |
1187 | } |
1188 | |
1189 | void ProcessGDBRemote::DidExit() { |
1190 | // When we exit, disconnect from the GDB server communications |
1191 | m_gdb_comm.Disconnect(); |
1192 | } |
1193 | |
1194 | void ProcessGDBRemote::DidAttach(ArchSpec &process_arch) { |
1195 | // If you can figure out what the architecture is, fill it in here. |
1196 | process_arch.Clear(); |
1197 | DidLaunchOrAttach(process_arch); |
1198 | } |
1199 | |
1200 | Status ProcessGDBRemote::WillResume() { |
1201 | m_continue_c_tids.clear(); |
1202 | m_continue_C_tids.clear(); |
1203 | m_continue_s_tids.clear(); |
1204 | m_continue_S_tids.clear(); |
1205 | m_jstopinfo_sp.reset(); |
1206 | m_jthreadsinfo_sp.reset(); |
1207 | return Status(); |
1208 | } |
1209 | |
1210 | Status ProcessGDBRemote::DoResume() { |
1211 | Status error; |
1212 | Log *log = GetLog(GDBRLog::Process); |
1213 | LLDB_LOGF(log, "ProcessGDBRemote::Resume()")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::Resume()"); } while (0); |
1214 | |
1215 | ListenerSP listener_sp( |
1216 | Listener::MakeListener("gdb-remote.resume-packet-sent")); |
1217 | if (listener_sp->StartListeningForEvents( |
1218 | &m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) { |
1219 | listener_sp->StartListeningForEvents( |
1220 | &m_async_broadcaster, |
1221 | ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); |
1222 | |
1223 | const size_t num_threads = GetThreadList().GetSize(); |
1224 | |
1225 | StreamString continue_packet; |
1226 | bool continue_packet_error = false; |
1227 | if (m_gdb_comm.HasAnyVContSupport()) { |
1228 | if (m_continue_c_tids.size() == num_threads || |
1229 | (m_continue_c_tids.empty() && m_continue_C_tids.empty() && |
1230 | m_continue_s_tids.empty() && m_continue_S_tids.empty())) { |
1231 | // All threads are continuing, just send a "c" packet |
1232 | continue_packet.PutCString("c"); |
1233 | } else { |
1234 | continue_packet.PutCString("vCont"); |
1235 | |
1236 | if (!m_continue_c_tids.empty()) { |
1237 | if (m_gdb_comm.GetVContSupported('c')) { |
1238 | for (tid_collection::const_iterator |
1239 | t_pos = m_continue_c_tids.begin(), |
1240 | t_end = m_continue_c_tids.end(); |
1241 | t_pos != t_end; ++t_pos) |
1242 | continue_packet.Printf(";c:%4.4" PRIx64"l" "x", *t_pos); |
1243 | } else |
1244 | continue_packet_error = true; |
1245 | } |
1246 | |
1247 | if (!continue_packet_error && !m_continue_C_tids.empty()) { |
1248 | if (m_gdb_comm.GetVContSupported('C')) { |
1249 | for (tid_sig_collection::const_iterator |
1250 | s_pos = m_continue_C_tids.begin(), |
1251 | s_end = m_continue_C_tids.end(); |
1252 | s_pos != s_end; ++s_pos) |
1253 | continue_packet.Printf(";C%2.2x:%4.4" PRIx64"l" "x", s_pos->second, |
1254 | s_pos->first); |
1255 | } else |
1256 | continue_packet_error = true; |
1257 | } |
1258 | |
1259 | if (!continue_packet_error && !m_continue_s_tids.empty()) { |
1260 | if (m_gdb_comm.GetVContSupported('s')) { |
1261 | for (tid_collection::const_iterator |
1262 | t_pos = m_continue_s_tids.begin(), |
1263 | t_end = m_continue_s_tids.end(); |
1264 | t_pos != t_end; ++t_pos) |
1265 | continue_packet.Printf(";s:%4.4" PRIx64"l" "x", *t_pos); |
1266 | } else |
1267 | continue_packet_error = true; |
1268 | } |
1269 | |
1270 | if (!continue_packet_error && !m_continue_S_tids.empty()) { |
1271 | if (m_gdb_comm.GetVContSupported('S')) { |
1272 | for (tid_sig_collection::const_iterator |
1273 | s_pos = m_continue_S_tids.begin(), |
1274 | s_end = m_continue_S_tids.end(); |
1275 | s_pos != s_end; ++s_pos) |
1276 | continue_packet.Printf(";S%2.2x:%4.4" PRIx64"l" "x", s_pos->second, |
1277 | s_pos->first); |
1278 | } else |
1279 | continue_packet_error = true; |
1280 | } |
1281 | |
1282 | if (continue_packet_error) |
1283 | continue_packet.Clear(); |
1284 | } |
1285 | } else |
1286 | continue_packet_error = true; |
1287 | |
1288 | if (continue_packet_error) { |
1289 | // Either no vCont support, or we tried to use part of the vCont packet |
1290 | // that wasn't supported by the remote GDB server. We need to try and |
1291 | // make a simple packet that can do our continue |
1292 | const size_t num_continue_c_tids = m_continue_c_tids.size(); |
1293 | const size_t num_continue_C_tids = m_continue_C_tids.size(); |
1294 | const size_t num_continue_s_tids = m_continue_s_tids.size(); |
1295 | const size_t num_continue_S_tids = m_continue_S_tids.size(); |
1296 | if (num_continue_c_tids > 0) { |
1297 | if (num_continue_c_tids == num_threads) { |
1298 | // All threads are resuming... |
1299 | m_gdb_comm.SetCurrentThreadForRun(-1); |
1300 | continue_packet.PutChar('c'); |
1301 | continue_packet_error = false; |
1302 | } else if (num_continue_c_tids == 1 && num_continue_C_tids == 0 && |
1303 | num_continue_s_tids == 0 && num_continue_S_tids == 0) { |
1304 | // Only one thread is continuing |
1305 | m_gdb_comm.SetCurrentThreadForRun(m_continue_c_tids.front()); |
1306 | continue_packet.PutChar('c'); |
1307 | continue_packet_error = false; |
1308 | } |
1309 | } |
1310 | |
1311 | if (continue_packet_error && num_continue_C_tids > 0) { |
1312 | if ((num_continue_C_tids + num_continue_c_tids) == num_threads && |
1313 | num_continue_C_tids > 0 && num_continue_s_tids == 0 && |
1314 | num_continue_S_tids == 0) { |
1315 | const int continue_signo = m_continue_C_tids.front().second; |
1316 | // Only one thread is continuing |
1317 | if (num_continue_C_tids > 1) { |
1318 | // More that one thread with a signal, yet we don't have vCont |
1319 | // support and we are being asked to resume each thread with a |
1320 | // signal, we need to make sure they are all the same signal, or we |
1321 | // can't issue the continue accurately with the current support... |
1322 | if (num_continue_C_tids > 1) { |
1323 | continue_packet_error = false; |
1324 | for (size_t i = 1; i < m_continue_C_tids.size(); ++i) { |
1325 | if (m_continue_C_tids[i].second != continue_signo) |
1326 | continue_packet_error = true; |
1327 | } |
1328 | } |
1329 | if (!continue_packet_error) |
1330 | m_gdb_comm.SetCurrentThreadForRun(-1); |
1331 | } else { |
1332 | // Set the continue thread ID |
1333 | continue_packet_error = false; |
1334 | m_gdb_comm.SetCurrentThreadForRun(m_continue_C_tids.front().first); |
1335 | } |
1336 | if (!continue_packet_error) { |
1337 | // Add threads continuing with the same signo... |
1338 | continue_packet.Printf("C%2.2x", continue_signo); |
1339 | } |
1340 | } |
1341 | } |
1342 | |
1343 | if (continue_packet_error && num_continue_s_tids > 0) { |
1344 | if (num_continue_s_tids == num_threads) { |
1345 | // All threads are resuming... |
1346 | m_gdb_comm.SetCurrentThreadForRun(-1); |
1347 | |
1348 | continue_packet.PutChar('s'); |
1349 | |
1350 | continue_packet_error = false; |
1351 | } else if (num_continue_c_tids == 0 && num_continue_C_tids == 0 && |
1352 | num_continue_s_tids == 1 && num_continue_S_tids == 0) { |
1353 | // Only one thread is stepping |
1354 | m_gdb_comm.SetCurrentThreadForRun(m_continue_s_tids.front()); |
1355 | continue_packet.PutChar('s'); |
1356 | continue_packet_error = false; |
1357 | } |
1358 | } |
1359 | |
1360 | if (!continue_packet_error && num_continue_S_tids > 0) { |
1361 | if (num_continue_S_tids == num_threads) { |
1362 | const int step_signo = m_continue_S_tids.front().second; |
1363 | // Are all threads trying to step with the same signal? |
1364 | continue_packet_error = false; |
1365 | if (num_continue_S_tids > 1) { |
1366 | for (size_t i = 1; i < num_threads; ++i) { |
1367 | if (m_continue_S_tids[i].second != step_signo) |
1368 | continue_packet_error = true; |
1369 | } |
1370 | } |
1371 | if (!continue_packet_error) { |
1372 | // Add threads stepping with the same signo... |
1373 | m_gdb_comm.SetCurrentThreadForRun(-1); |
1374 | continue_packet.Printf("S%2.2x", step_signo); |
1375 | } |
1376 | } else if (num_continue_c_tids == 0 && num_continue_C_tids == 0 && |
1377 | num_continue_s_tids == 0 && num_continue_S_tids == 1) { |
1378 | // Only one thread is stepping with signal |
1379 | m_gdb_comm.SetCurrentThreadForRun(m_continue_S_tids.front().first); |
1380 | continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); |
1381 | continue_packet_error = false; |
1382 | } |
1383 | } |
1384 | } |
1385 | |
1386 | if (continue_packet_error) { |
1387 | error.SetErrorString("can't make continue packet for this resume"); |
1388 | } else { |
1389 | EventSP event_sp; |
1390 | if (!m_async_thread.IsJoinable()) { |
1391 | error.SetErrorString("Trying to resume but the async thread is dead."); |
1392 | LLDB_LOGF(log, "ProcessGDBRemote::DoResume: Trying to resume but the "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Trying to resume but the " "async thread is dead."); } while (0) |
1393 | "async thread is dead.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Trying to resume but the " "async thread is dead."); } while (0); |
1394 | return error; |
1395 | } |
1396 | |
1397 | m_async_broadcaster.BroadcastEvent( |
1398 | eBroadcastBitAsyncContinue, |
1399 | new EventDataBytes(continue_packet.GetString().data(), |
1400 | continue_packet.GetSize())); |
1401 | |
1402 | if (!listener_sp->GetEvent(event_sp, std::chrono::seconds(5))) { |
1403 | error.SetErrorString("Resume timed out."); |
1404 | LLDB_LOGF(log, "ProcessGDBRemote::DoResume: Resume timed out.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Resume timed out." ); } while (0); |
1405 | } else if (event_sp->BroadcasterIs(&m_async_broadcaster)) { |
1406 | error.SetErrorString("Broadcast continue, but the async thread was " |
1407 | "killed before we got an ack back."); |
1408 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Broadcast continue, but the " "async thread was killed before we got an ack back."); } while (0) |
1409 | "ProcessGDBRemote::DoResume: Broadcast continue, but the "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Broadcast continue, but the " "async thread was killed before we got an ack back."); } while (0) |
1410 | "async thread was killed before we got an ack back.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoResume: Broadcast continue, but the " "async thread was killed before we got an ack back."); } while (0); |
1411 | return error; |
1412 | } |
1413 | } |
1414 | } |
1415 | |
1416 | return error; |
1417 | } |
1418 | |
1419 | void ProcessGDBRemote::ClearThreadIDList() { |
1420 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
1421 | m_thread_ids.clear(); |
1422 | m_thread_pcs.clear(); |
1423 | } |
1424 | |
1425 | size_t ProcessGDBRemote::UpdateThreadIDsFromStopReplyThreadsValue( |
1426 | llvm::StringRef value) { |
1427 | m_thread_ids.clear(); |
1428 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
1429 | StringExtractorGDBRemote thread_ids{value}; |
1430 | |
1431 | do { |
1432 | auto pid_tid = thread_ids.GetPidTid(pid); |
1433 | if (pid_tid && pid_tid->first == pid) { |
1434 | lldb::tid_t tid = pid_tid->second; |
1435 | if (tid != LLDB_INVALID_THREAD_ID0 && |
1436 | tid != StringExtractorGDBRemote::AllProcesses) |
1437 | m_thread_ids.push_back(tid); |
1438 | } |
1439 | } while (thread_ids.GetChar() == ','); |
1440 | |
1441 | return m_thread_ids.size(); |
1442 | } |
1443 | |
1444 | size_t ProcessGDBRemote::UpdateThreadPCsFromStopReplyThreadsValue( |
1445 | llvm::StringRef value) { |
1446 | m_thread_pcs.clear(); |
1447 | for (llvm::StringRef x : llvm::split(value, ',')) { |
1448 | lldb::addr_t pc; |
1449 | if (llvm::to_integer(x, pc, 16)) |
1450 | m_thread_pcs.push_back(pc); |
1451 | } |
1452 | return m_thread_pcs.size(); |
1453 | } |
1454 | |
1455 | bool ProcessGDBRemote::UpdateThreadIDList() { |
1456 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
1457 | |
1458 | if (m_jthreadsinfo_sp) { |
1459 | // If we have the JSON threads info, we can get the thread list from that |
1460 | StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray(); |
1461 | if (thread_infos && thread_infos->GetSize() > 0) { |
1462 | m_thread_ids.clear(); |
1463 | m_thread_pcs.clear(); |
1464 | thread_infos->ForEach([this](StructuredData::Object *object) -> bool { |
1465 | StructuredData::Dictionary *thread_dict = object->GetAsDictionary(); |
1466 | if (thread_dict) { |
1467 | // Set the thread stop info from the JSON dictionary |
1468 | SetThreadStopInfo(thread_dict); |
1469 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
1470 | if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>("tid", tid)) |
1471 | m_thread_ids.push_back(tid); |
1472 | } |
1473 | return true; // Keep iterating through all thread_info objects |
1474 | }); |
1475 | } |
1476 | if (!m_thread_ids.empty()) |
1477 | return true; |
1478 | } else { |
1479 | // See if we can get the thread IDs from the current stop reply packets |
1480 | // that might contain a "threads" key/value pair |
1481 | |
1482 | if (m_last_stop_packet) { |
1483 | // Get the thread stop info |
1484 | StringExtractorGDBRemote &stop_info = *m_last_stop_packet; |
1485 | const std::string &stop_info_str = std::string(stop_info.GetStringRef()); |
1486 | |
1487 | m_thread_pcs.clear(); |
1488 | const size_t thread_pcs_pos = stop_info_str.find(";thread-pcs:"); |
1489 | if (thread_pcs_pos != std::string::npos) { |
1490 | const size_t start = thread_pcs_pos + strlen(";thread-pcs:"); |
1491 | const size_t end = stop_info_str.find(';', start); |
1492 | if (end != std::string::npos) { |
1493 | std::string value = stop_info_str.substr(start, end - start); |
1494 | UpdateThreadPCsFromStopReplyThreadsValue(value); |
1495 | } |
1496 | } |
1497 | |
1498 | const size_t threads_pos = stop_info_str.find(";threads:"); |
1499 | if (threads_pos != std::string::npos) { |
1500 | const size_t start = threads_pos + strlen(";threads:"); |
1501 | const size_t end = stop_info_str.find(';', start); |
1502 | if (end != std::string::npos) { |
1503 | std::string value = stop_info_str.substr(start, end - start); |
1504 | if (UpdateThreadIDsFromStopReplyThreadsValue(value)) |
1505 | return true; |
1506 | } |
1507 | } |
1508 | } |
1509 | } |
1510 | |
1511 | bool sequence_mutex_unavailable = false; |
1512 | m_gdb_comm.GetCurrentThreadIDs(m_thread_ids, sequence_mutex_unavailable); |
1513 | if (sequence_mutex_unavailable) { |
1514 | return false; // We just didn't get the list |
1515 | } |
1516 | return true; |
1517 | } |
1518 | |
1519 | bool ProcessGDBRemote::DoUpdateThreadList(ThreadList &old_thread_list, |
1520 | ThreadList &new_thread_list) { |
1521 | // locker will keep a mutex locked until it goes out of scope |
1522 | Log *log = GetLog(GDBRLog::Thread); |
1523 | LLDB_LOGV(log, "pid = {0}", GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "pid = {0}", GetID()); } while (0); |
1524 | |
1525 | size_t num_thread_ids = m_thread_ids.size(); |
1526 | // The "m_thread_ids" thread ID list should always be updated after each stop |
1527 | // reply packet, but in case it isn't, update it here. |
1528 | if (num_thread_ids == 0) { |
1529 | if (!UpdateThreadIDList()) |
1530 | return false; |
1531 | num_thread_ids = m_thread_ids.size(); |
1532 | } |
1533 | |
1534 | ThreadList old_thread_list_copy(old_thread_list); |
1535 | if (num_thread_ids > 0) { |
1536 | for (size_t i = 0; i < num_thread_ids; ++i) { |
1537 | tid_t tid = m_thread_ids[i]; |
1538 | ThreadSP thread_sp( |
1539 | old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); |
1540 | if (!thread_sp) { |
1541 | thread_sp = std::make_shared<ThreadGDBRemote>(*this, tid); |
1542 | LLDB_LOGV(log, "Making new thread: {0} for thread ID: {1:x}.",do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Making new thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0) |
1543 | thread_sp.get(), thread_sp->GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Making new thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0); |
1544 | } else { |
1545 | LLDB_LOGV(log, "Found old thread: {0} for thread ID: {1:x}.",do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Found old thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0) |
1546 | thread_sp.get(), thread_sp->GetID())do { ::lldb_private::Log *log_private = (log); if (log_private && log_private->GetVerbose()) log_private->Format ("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Found old thread: {0} for thread ID: {1:x}.", thread_sp .get(), thread_sp->GetID()); } while (0); |
1547 | } |
1548 | |
1549 | SetThreadPc(thread_sp, i); |
1550 | new_thread_list.AddThreadSortedByIndexID(thread_sp); |
1551 | } |
1552 | } |
1553 | |
1554 | // Whatever that is left in old_thread_list_copy are not present in |
1555 | // new_thread_list. Remove non-existent threads from internal id table. |
1556 | size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); |
1557 | for (size_t i = 0; i < old_num_thread_ids; i++) { |
1558 | ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex(i, false)); |
1559 | if (old_thread_sp) { |
1560 | lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); |
1561 | m_thread_id_to_index_id_map.erase(old_thread_id); |
1562 | } |
1563 | } |
1564 | |
1565 | return true; |
1566 | } |
1567 | |
1568 | void ProcessGDBRemote::SetThreadPc(const ThreadSP &thread_sp, uint64_t index) { |
1569 | if (m_thread_ids.size() == m_thread_pcs.size() && thread_sp.get() && |
1570 | GetByteOrder() != eByteOrderInvalid) { |
1571 | ThreadGDBRemote *gdb_thread = |
1572 | static_cast<ThreadGDBRemote *>(thread_sp.get()); |
1573 | RegisterContextSP reg_ctx_sp(thread_sp->GetRegisterContext()); |
1574 | if (reg_ctx_sp) { |
1575 | uint32_t pc_regnum = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( |
1576 | eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC0); |
1577 | if (pc_regnum != LLDB_INVALID_REGNUM(4294967295U)) { |
1578 | gdb_thread->PrivateSetRegisterValue(pc_regnum, m_thread_pcs[index]); |
1579 | } |
1580 | } |
1581 | } |
1582 | } |
1583 | |
1584 | bool ProcessGDBRemote::GetThreadStopInfoFromJSON( |
1585 | ThreadGDBRemote *thread, const StructuredData::ObjectSP &thread_infos_sp) { |
1586 | // See if we got thread stop infos for all threads via the "jThreadsInfo" |
1587 | // packet |
1588 | if (thread_infos_sp) { |
1589 | StructuredData::Array *thread_infos = thread_infos_sp->GetAsArray(); |
1590 | if (thread_infos) { |
1591 | lldb::tid_t tid; |
1592 | const size_t n = thread_infos->GetSize(); |
1593 | for (size_t i = 0; i < n; ++i) { |
1594 | StructuredData::Dictionary *thread_dict = |
1595 | thread_infos->GetItemAtIndex(i)->GetAsDictionary(); |
1596 | if (thread_dict) { |
1597 | if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>( |
1598 | "tid", tid, LLDB_INVALID_THREAD_ID0)) { |
1599 | if (tid == thread->GetID()) |
1600 | return (bool)SetThreadStopInfo(thread_dict); |
1601 | } |
1602 | } |
1603 | } |
1604 | } |
1605 | } |
1606 | return false; |
1607 | } |
1608 | |
1609 | bool ProcessGDBRemote::CalculateThreadStopInfo(ThreadGDBRemote *thread) { |
1610 | // See if we got thread stop infos for all threads via the "jThreadsInfo" |
1611 | // packet |
1612 | if (GetThreadStopInfoFromJSON(thread, m_jthreadsinfo_sp)) |
1613 | return true; |
1614 | |
1615 | // See if we got thread stop info for any threads valid stop info reasons |
1616 | // threads via the "jstopinfo" packet stop reply packet key/value pair? |
1617 | if (m_jstopinfo_sp) { |
1618 | // If we have "jstopinfo" then we have stop descriptions for all threads |
1619 | // that have stop reasons, and if there is no entry for a thread, then it |
1620 | // has no stop reason. |
1621 | thread->GetRegisterContext()->InvalidateIfNeeded(true); |
1622 | if (!GetThreadStopInfoFromJSON(thread, m_jstopinfo_sp)) { |
1623 | thread->SetStopInfo(StopInfoSP()); |
1624 | } |
1625 | return true; |
1626 | } |
1627 | |
1628 | // Fall back to using the qThreadStopInfo packet |
1629 | StringExtractorGDBRemote stop_packet; |
1630 | if (GetGDBRemote().GetThreadStopInfo(thread->GetProtocolID(), stop_packet)) |
1631 | return SetThreadStopInfo(stop_packet) == eStateStopped; |
1632 | return false; |
1633 | } |
1634 | |
1635 | ThreadSP ProcessGDBRemote::SetThreadStopInfo( |
1636 | lldb::tid_t tid, ExpeditedRegisterMap &expedited_register_map, |
1637 | uint8_t signo, const std::string &thread_name, const std::string &reason, |
1638 | const std::string &description, uint32_t exc_type, |
1639 | const std::vector<addr_t> &exc_data, addr_t thread_dispatch_qaddr, |
1640 | bool queue_vars_valid, // Set to true if queue_name, queue_kind and |
1641 | // queue_serial are valid |
1642 | LazyBool associated_with_dispatch_queue, addr_t dispatch_queue_t, |
1643 | std::string &queue_name, QueueKind queue_kind, uint64_t queue_serial) { |
1644 | ThreadSP thread_sp; |
1645 | if (tid != LLDB_INVALID_THREAD_ID0) { |
1646 | // Scope for "locker" below |
1647 | { |
1648 | // m_thread_list_real does have its own mutex, but we need to hold onto |
1649 | // the mutex between the call to m_thread_list_real.FindThreadByID(...) |
1650 | // and the m_thread_list_real.AddThread(...) so it doesn't change on us |
1651 | std::lock_guard<std::recursive_mutex> guard( |
1652 | m_thread_list_real.GetMutex()); |
1653 | thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); |
1654 | |
1655 | if (!thread_sp) { |
1656 | // Create the thread if we need to |
1657 | thread_sp = std::make_shared<ThreadGDBRemote>(*this, tid); |
1658 | m_thread_list_real.AddThread(thread_sp); |
1659 | } |
1660 | } |
1661 | |
1662 | if (thread_sp) { |
1663 | ThreadGDBRemote *gdb_thread = |
1664 | static_cast<ThreadGDBRemote *>(thread_sp.get()); |
1665 | RegisterContextSP gdb_reg_ctx_sp(gdb_thread->GetRegisterContext()); |
1666 | |
1667 | gdb_reg_ctx_sp->InvalidateIfNeeded(true); |
1668 | |
1669 | auto iter = std::find(m_thread_ids.begin(), m_thread_ids.end(), tid); |
1670 | if (iter != m_thread_ids.end()) { |
1671 | SetThreadPc(thread_sp, iter - m_thread_ids.begin()); |
1672 | } |
1673 | |
1674 | for (const auto &pair : expedited_register_map) { |
1675 | StringExtractor reg_value_extractor(pair.second); |
1676 | WritableDataBufferSP buffer_sp(new DataBufferHeap( |
1677 | reg_value_extractor.GetStringRef().size() / 2, 0)); |
1678 | reg_value_extractor.GetHexBytes(buffer_sp->GetData(), '\xcc'); |
1679 | uint32_t lldb_regnum = |
1680 | gdb_reg_ctx_sp->ConvertRegisterKindToRegisterNumber( |
1681 | eRegisterKindProcessPlugin, pair.first); |
1682 | gdb_thread->PrivateSetRegisterValue(lldb_regnum, buffer_sp->GetData()); |
1683 | } |
1684 | |
1685 | // AArch64 SVE specific code below calls AArch64SVEReconfigure to update |
1686 | // SVE register sizes and offsets if value of VG register has changed |
1687 | // since last stop. |
1688 | const ArchSpec &arch = GetTarget().GetArchitecture(); |
1689 | if (arch.IsValid() && arch.GetTriple().isAArch64()) { |
1690 | GDBRemoteRegisterContext *reg_ctx_sp = |
1691 | static_cast<GDBRemoteRegisterContext *>( |
1692 | gdb_thread->GetRegisterContext().get()); |
1693 | |
1694 | if (reg_ctx_sp) |
1695 | reg_ctx_sp->AArch64SVEReconfigure(); |
1696 | } |
1697 | |
1698 | thread_sp->SetName(thread_name.empty() ? nullptr : thread_name.c_str()); |
1699 | |
1700 | gdb_thread->SetThreadDispatchQAddr(thread_dispatch_qaddr); |
1701 | // Check if the GDB server was able to provide the queue name, kind and |
1702 | // serial number |
1703 | if (queue_vars_valid) |
1704 | gdb_thread->SetQueueInfo(std::move(queue_name), queue_kind, |
1705 | queue_serial, dispatch_queue_t, |
1706 | associated_with_dispatch_queue); |
1707 | else |
1708 | gdb_thread->ClearQueueInfo(); |
1709 | |
1710 | gdb_thread->SetAssociatedWithLibdispatchQueue( |
1711 | associated_with_dispatch_queue); |
1712 | |
1713 | if (dispatch_queue_t != LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
1714 | gdb_thread->SetQueueLibdispatchQueueAddress(dispatch_queue_t); |
1715 | |
1716 | // Make sure we update our thread stop reason just once |
1717 | if (!thread_sp->StopInfoIsUpToDate()) { |
1718 | thread_sp->SetStopInfo(StopInfoSP()); |
1719 | // If there's a memory thread backed by this thread, we need to use it |
1720 | // to calculate StopInfo. |
1721 | if (ThreadSP memory_thread_sp = |
1722 | m_thread_list.GetBackingThread(thread_sp)) |
1723 | thread_sp = memory_thread_sp; |
1724 | |
1725 | if (exc_type != 0) { |
1726 | const size_t exc_data_size = exc_data.size(); |
1727 | |
1728 | thread_sp->SetStopInfo( |
1729 | StopInfoMachException::CreateStopReasonWithMachException( |
1730 | *thread_sp, exc_type, exc_data_size, |
1731 | exc_data_size >= 1 ? exc_data[0] : 0, |
1732 | exc_data_size >= 2 ? exc_data[1] : 0, |
1733 | exc_data_size >= 3 ? exc_data[2] : 0)); |
1734 | } else { |
1735 | bool handled = false; |
1736 | bool did_exec = false; |
1737 | if (!reason.empty()) { |
1738 | if (reason == "trace") { |
1739 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
1740 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
1741 | ->GetBreakpointSiteList() |
1742 | .FindByAddress(pc); |
1743 | |
1744 | // If the current pc is a breakpoint site then the StopInfo |
1745 | // should be set to Breakpoint Otherwise, it will be set to |
1746 | // Trace. |
1747 | if (bp_site_sp && bp_site_sp->ValidForThisThread(*thread_sp)) { |
1748 | thread_sp->SetStopInfo( |
1749 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
1750 | *thread_sp, bp_site_sp->GetID())); |
1751 | } else |
1752 | thread_sp->SetStopInfo( |
1753 | StopInfo::CreateStopReasonToTrace(*thread_sp)); |
1754 | handled = true; |
1755 | } else if (reason == "breakpoint") { |
1756 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
1757 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
1758 | ->GetBreakpointSiteList() |
1759 | .FindByAddress(pc); |
1760 | if (bp_site_sp) { |
1761 | // If the breakpoint is for this thread, then we'll report the |
1762 | // hit, but if it is for another thread, we can just report no |
1763 | // reason. We don't need to worry about stepping over the |
1764 | // breakpoint here, that will be taken care of when the thread |
1765 | // resumes and notices that there's a breakpoint under the pc. |
1766 | handled = true; |
1767 | if (bp_site_sp->ValidForThisThread(*thread_sp)) { |
1768 | thread_sp->SetStopInfo( |
1769 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
1770 | *thread_sp, bp_site_sp->GetID())); |
1771 | } else { |
1772 | StopInfoSP invalid_stop_info_sp; |
1773 | thread_sp->SetStopInfo(invalid_stop_info_sp); |
1774 | } |
1775 | } |
1776 | } else if (reason == "trap") { |
1777 | // Let the trap just use the standard signal stop reason below... |
1778 | } else if (reason == "watchpoint") { |
1779 | StringExtractor desc_extractor(description.c_str()); |
1780 | addr_t wp_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
1781 | uint32_t wp_index = desc_extractor.GetU32(LLDB_INVALID_INDEX32(4294967295U)); |
1782 | addr_t wp_hit_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
1783 | watch_id_t watch_id = LLDB_INVALID_WATCH_ID0; |
1784 | if (wp_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
1785 | WatchpointSP wp_sp; |
1786 | ArchSpec::Core core = GetTarget().GetArchitecture().GetCore(); |
1787 | if ((core >= ArchSpec::kCore_mips_first && |
1788 | core <= ArchSpec::kCore_mips_last) || |
1789 | (core >= ArchSpec::eCore_arm_generic && |
1790 | core <= ArchSpec::eCore_arm_aarch64)) |
1791 | wp_sp = GetTarget().GetWatchpointList().FindByAddress( |
1792 | wp_hit_addr); |
1793 | if (!wp_sp) |
1794 | wp_sp = |
1795 | GetTarget().GetWatchpointList().FindByAddress(wp_addr); |
1796 | if (wp_sp) { |
1797 | wp_sp->SetHardwareIndex(wp_index); |
1798 | watch_id = wp_sp->GetID(); |
1799 | } |
1800 | } |
1801 | if (watch_id == LLDB_INVALID_WATCH_ID0) { |
1802 | Log *log(GetLog(GDBRLog::Watchpoints)); |
1803 | LLDB_LOGF(log, "failed to find watchpoint")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to find watchpoint"); } while (0); |
1804 | } |
1805 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithWatchpointID( |
1806 | *thread_sp, watch_id, wp_hit_addr)); |
1807 | handled = true; |
1808 | } else if (reason == "exception") { |
1809 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithException( |
1810 | *thread_sp, description.c_str())); |
1811 | handled = true; |
1812 | } else if (reason == "exec") { |
1813 | did_exec = true; |
1814 | thread_sp->SetStopInfo( |
1815 | StopInfo::CreateStopReasonWithExec(*thread_sp)); |
1816 | handled = true; |
1817 | } else if (reason == "processor trace") { |
1818 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonProcessorTrace( |
1819 | *thread_sp, description.c_str())); |
1820 | } else if (reason == "fork") { |
1821 | StringExtractor desc_extractor(description.c_str()); |
1822 | lldb::pid_t child_pid = desc_extractor.GetU64( |
1823 | LLDB_INVALID_PROCESS_ID0); |
1824 | lldb::tid_t child_tid = desc_extractor.GetU64( |
1825 | LLDB_INVALID_THREAD_ID0); |
1826 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonFork( |
1827 | *thread_sp, child_pid, child_tid)); |
1828 | handled = true; |
1829 | } else if (reason == "vfork") { |
1830 | StringExtractor desc_extractor(description.c_str()); |
1831 | lldb::pid_t child_pid = desc_extractor.GetU64( |
1832 | LLDB_INVALID_PROCESS_ID0); |
1833 | lldb::tid_t child_tid = desc_extractor.GetU64( |
1834 | LLDB_INVALID_THREAD_ID0); |
1835 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonVFork( |
1836 | *thread_sp, child_pid, child_tid)); |
1837 | handled = true; |
1838 | } else if (reason == "vforkdone") { |
1839 | thread_sp->SetStopInfo( |
1840 | StopInfo::CreateStopReasonVForkDone(*thread_sp)); |
1841 | handled = true; |
1842 | } |
1843 | } else if (!signo) { |
1844 | addr_t pc = thread_sp->GetRegisterContext()->GetPC(); |
1845 | lldb::BreakpointSiteSP bp_site_sp = |
1846 | thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress( |
1847 | pc); |
1848 | |
1849 | // If the current pc is a breakpoint site then the StopInfo should |
1850 | // be set to Breakpoint even though the remote stub did not set it |
1851 | // as such. This can happen when the thread is involuntarily |
1852 | // interrupted (e.g. due to stops on other threads) just as it is |
1853 | // about to execute the breakpoint instruction. |
1854 | if (bp_site_sp && bp_site_sp->ValidForThisThread(*thread_sp)) { |
1855 | thread_sp->SetStopInfo( |
1856 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
1857 | *thread_sp, bp_site_sp->GetID())); |
1858 | handled = true; |
1859 | } |
1860 | } |
1861 | |
1862 | if (!handled && signo && !did_exec) { |
1863 | if (signo == SIGTRAP5) { |
1864 | // Currently we are going to assume SIGTRAP means we are either |
1865 | // hitting a breakpoint or hardware single stepping. |
1866 | handled = true; |
1867 | addr_t pc = thread_sp->GetRegisterContext()->GetPC() + |
1868 | m_breakpoint_pc_offset; |
1869 | lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess() |
1870 | ->GetBreakpointSiteList() |
1871 | .FindByAddress(pc); |
1872 | |
1873 | if (bp_site_sp) { |
1874 | // If the breakpoint is for this thread, then we'll report the |
1875 | // hit, but if it is for another thread, we can just report no |
1876 | // reason. We don't need to worry about stepping over the |
1877 | // breakpoint here, that will be taken care of when the thread |
1878 | // resumes and notices that there's a breakpoint under the pc. |
1879 | if (bp_site_sp->ValidForThisThread(*thread_sp)) { |
1880 | if (m_breakpoint_pc_offset != 0) |
1881 | thread_sp->GetRegisterContext()->SetPC(pc); |
1882 | thread_sp->SetStopInfo( |
1883 | StopInfo::CreateStopReasonWithBreakpointSiteID( |
1884 | *thread_sp, bp_site_sp->GetID())); |
1885 | } else { |
1886 | StopInfoSP invalid_stop_info_sp; |
1887 | thread_sp->SetStopInfo(invalid_stop_info_sp); |
1888 | } |
1889 | } else { |
1890 | // If we were stepping then assume the stop was the result of |
1891 | // the trace. If we were not stepping then report the SIGTRAP. |
1892 | // FIXME: We are still missing the case where we single step |
1893 | // over a trap instruction. |
1894 | if (thread_sp->GetTemporaryResumeState() == eStateStepping) |
1895 | thread_sp->SetStopInfo( |
1896 | StopInfo::CreateStopReasonToTrace(*thread_sp)); |
1897 | else |
1898 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithSignal( |
1899 | *thread_sp, signo, description.c_str())); |
1900 | } |
1901 | } |
1902 | if (!handled) |
1903 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithSignal( |
1904 | *thread_sp, signo, description.c_str())); |
1905 | } |
1906 | |
1907 | if (!description.empty()) { |
1908 | lldb::StopInfoSP stop_info_sp(thread_sp->GetStopInfo()); |
1909 | if (stop_info_sp) { |
1910 | const char *stop_info_desc = stop_info_sp->GetDescription(); |
1911 | if (!stop_info_desc || !stop_info_desc[0]) |
1912 | stop_info_sp->SetDescription(description.c_str()); |
1913 | } else { |
1914 | thread_sp->SetStopInfo(StopInfo::CreateStopReasonWithException( |
1915 | *thread_sp, description.c_str())); |
1916 | } |
1917 | } |
1918 | } |
1919 | } |
1920 | } |
1921 | } |
1922 | return thread_sp; |
1923 | } |
1924 | |
1925 | lldb::ThreadSP |
1926 | ProcessGDBRemote::SetThreadStopInfo(StructuredData::Dictionary *thread_dict) { |
1927 | static ConstString g_key_tid("tid"); |
1928 | static ConstString g_key_name("name"); |
1929 | static ConstString g_key_reason("reason"); |
1930 | static ConstString g_key_metype("metype"); |
1931 | static ConstString g_key_medata("medata"); |
1932 | static ConstString g_key_qaddr("qaddr"); |
1933 | static ConstString g_key_dispatch_queue_t("dispatch_queue_t"); |
1934 | static ConstString g_key_associated_with_dispatch_queue( |
1935 | "associated_with_dispatch_queue"); |
1936 | static ConstString g_key_queue_name("qname"); |
1937 | static ConstString g_key_queue_kind("qkind"); |
1938 | static ConstString g_key_queue_serial_number("qserialnum"); |
1939 | static ConstString g_key_registers("registers"); |
1940 | static ConstString g_key_memory("memory"); |
1941 | static ConstString g_key_address("address"); |
1942 | static ConstString g_key_bytes("bytes"); |
1943 | static ConstString g_key_description("description"); |
1944 | static ConstString g_key_signal("signal"); |
1945 | |
1946 | // Stop with signal and thread info |
1947 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
1948 | uint8_t signo = 0; |
1949 | std::string value; |
1950 | std::string thread_name; |
1951 | std::string reason; |
1952 | std::string description; |
1953 | uint32_t exc_type = 0; |
1954 | std::vector<addr_t> exc_data; |
1955 | addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
1956 | ExpeditedRegisterMap expedited_register_map; |
1957 | bool queue_vars_valid = false; |
1958 | addr_t dispatch_queue_t = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
1959 | LazyBool associated_with_dispatch_queue = eLazyBoolCalculate; |
1960 | std::string queue_name; |
1961 | QueueKind queue_kind = eQueueKindUnknown; |
1962 | uint64_t queue_serial_number = 0; |
1963 | // Iterate through all of the thread dictionary key/value pairs from the |
1964 | // structured data dictionary |
1965 | |
1966 | // FIXME: we're silently ignoring invalid data here |
1967 | thread_dict->ForEach([this, &tid, &expedited_register_map, &thread_name, |
1968 | &signo, &reason, &description, &exc_type, &exc_data, |
1969 | &thread_dispatch_qaddr, &queue_vars_valid, |
1970 | &associated_with_dispatch_queue, &dispatch_queue_t, |
1971 | &queue_name, &queue_kind, &queue_serial_number]( |
1972 | ConstString key, |
1973 | StructuredData::Object *object) -> bool { |
1974 | if (key == g_key_tid) { |
1975 | // thread in big endian hex |
1976 | tid = object->GetIntegerValue(LLDB_INVALID_THREAD_ID0); |
1977 | } else if (key == g_key_metype) { |
1978 | // exception type in big endian hex |
1979 | exc_type = object->GetIntegerValue(0); |
1980 | } else if (key == g_key_medata) { |
1981 | // exception data in big endian hex |
1982 | StructuredData::Array *array = object->GetAsArray(); |
1983 | if (array) { |
1984 | array->ForEach([&exc_data](StructuredData::Object *object) -> bool { |
1985 | exc_data.push_back(object->GetIntegerValue()); |
1986 | return true; // Keep iterating through all array items |
1987 | }); |
1988 | } |
1989 | } else if (key == g_key_name) { |
1990 | thread_name = std::string(object->GetStringValue()); |
1991 | } else if (key == g_key_qaddr) { |
1992 | thread_dispatch_qaddr = object->GetIntegerValue(LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
1993 | } else if (key == g_key_queue_name) { |
1994 | queue_vars_valid = true; |
1995 | queue_name = std::string(object->GetStringValue()); |
1996 | } else if (key == g_key_queue_kind) { |
1997 | std::string queue_kind_str = std::string(object->GetStringValue()); |
1998 | if (queue_kind_str == "serial") { |
1999 | queue_vars_valid = true; |
2000 | queue_kind = eQueueKindSerial; |
2001 | } else if (queue_kind_str == "concurrent") { |
2002 | queue_vars_valid = true; |
2003 | queue_kind = eQueueKindConcurrent; |
2004 | } |
2005 | } else if (key == g_key_queue_serial_number) { |
2006 | queue_serial_number = object->GetIntegerValue(0); |
2007 | if (queue_serial_number != 0) |
2008 | queue_vars_valid = true; |
2009 | } else if (key == g_key_dispatch_queue_t) { |
2010 | dispatch_queue_t = object->GetIntegerValue(0); |
2011 | if (dispatch_queue_t != 0 && dispatch_queue_t != LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
2012 | queue_vars_valid = true; |
2013 | } else if (key == g_key_associated_with_dispatch_queue) { |
2014 | queue_vars_valid = true; |
2015 | bool associated = object->GetBooleanValue(); |
2016 | if (associated) |
2017 | associated_with_dispatch_queue = eLazyBoolYes; |
2018 | else |
2019 | associated_with_dispatch_queue = eLazyBoolNo; |
2020 | } else if (key == g_key_reason) { |
2021 | reason = std::string(object->GetStringValue()); |
2022 | } else if (key == g_key_description) { |
2023 | description = std::string(object->GetStringValue()); |
2024 | } else if (key == g_key_registers) { |
2025 | StructuredData::Dictionary *registers_dict = object->GetAsDictionary(); |
2026 | |
2027 | if (registers_dict) { |
2028 | registers_dict->ForEach( |
2029 | [&expedited_register_map](ConstString key, |
2030 | StructuredData::Object *object) -> bool { |
2031 | uint32_t reg; |
2032 | if (llvm::to_integer(key.AsCString(), reg)) |
2033 | expedited_register_map[reg] = |
2034 | std::string(object->GetStringValue()); |
2035 | return true; // Keep iterating through all array items |
2036 | }); |
2037 | } |
2038 | } else if (key == g_key_memory) { |
2039 | StructuredData::Array *array = object->GetAsArray(); |
2040 | if (array) { |
2041 | array->ForEach([this](StructuredData::Object *object) -> bool { |
2042 | StructuredData::Dictionary *mem_cache_dict = |
2043 | object->GetAsDictionary(); |
2044 | if (mem_cache_dict) { |
2045 | lldb::addr_t mem_cache_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2046 | if (mem_cache_dict->GetValueForKeyAsInteger<lldb::addr_t>( |
2047 | "address", mem_cache_addr)) { |
2048 | if (mem_cache_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
2049 | llvm::StringRef str; |
2050 | if (mem_cache_dict->GetValueForKeyAsString("bytes", str)) { |
2051 | StringExtractor bytes(str); |
2052 | bytes.SetFilePos(0); |
2053 | |
2054 | const size_t byte_size = bytes.GetStringRef().size() / 2; |
2055 | WritableDataBufferSP data_buffer_sp( |
2056 | new DataBufferHeap(byte_size, 0)); |
2057 | const size_t bytes_copied = |
2058 | bytes.GetHexBytes(data_buffer_sp->GetData(), 0); |
2059 | if (bytes_copied == byte_size) |
2060 | m_memory_cache.AddL1CacheData(mem_cache_addr, |
2061 | data_buffer_sp); |
2062 | } |
2063 | } |
2064 | } |
2065 | } |
2066 | return true; // Keep iterating through all array items |
2067 | }); |
2068 | } |
2069 | |
2070 | } else if (key == g_key_signal) |
2071 | signo = object->GetIntegerValue(LLDB_INVALID_SIGNAL_NUMBER(2147483647)); |
2072 | return true; // Keep iterating through all dictionary key/value pairs |
2073 | }); |
2074 | |
2075 | return SetThreadStopInfo(tid, expedited_register_map, signo, thread_name, |
2076 | reason, description, exc_type, exc_data, |
2077 | thread_dispatch_qaddr, queue_vars_valid, |
2078 | associated_with_dispatch_queue, dispatch_queue_t, |
2079 | queue_name, queue_kind, queue_serial_number); |
2080 | } |
2081 | |
2082 | StateType ProcessGDBRemote::SetThreadStopInfo(StringExtractor &stop_packet) { |
2083 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
2084 | stop_packet.SetFilePos(0); |
2085 | const char stop_type = stop_packet.GetChar(); |
2086 | switch (stop_type) { |
2087 | case 'T': |
2088 | case 'S': { |
2089 | // This is a bit of a hack, but is is required. If we did exec, we need to |
2090 | // clear our thread lists and also know to rebuild our dynamic register |
2091 | // info before we lookup and threads and populate the expedited register |
2092 | // values so we need to know this right away so we can cleanup and update |
2093 | // our registers. |
2094 | const uint32_t stop_id = GetStopID(); |
2095 | if (stop_id == 0) { |
2096 | // Our first stop, make sure we have a process ID, and also make sure we |
2097 | // know about our registers |
2098 | if (GetID() == LLDB_INVALID_PROCESS_ID0 && pid != LLDB_INVALID_PROCESS_ID0) |
2099 | SetID(pid); |
2100 | BuildDynamicRegisterInfo(true); |
2101 | } |
2102 | // Stop with signal and thread info |
2103 | lldb::pid_t stop_pid = LLDB_INVALID_PROCESS_ID0; |
2104 | lldb::tid_t tid = LLDB_INVALID_THREAD_ID0; |
2105 | const uint8_t signo = stop_packet.GetHexU8(); |
2106 | llvm::StringRef key; |
2107 | llvm::StringRef value; |
2108 | std::string thread_name; |
2109 | std::string reason; |
2110 | std::string description; |
2111 | uint32_t exc_type = 0; |
2112 | std::vector<addr_t> exc_data; |
2113 | addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2114 | bool queue_vars_valid = |
2115 | false; // says if locals below that start with "queue_" are valid |
2116 | addr_t dispatch_queue_t = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2117 | LazyBool associated_with_dispatch_queue = eLazyBoolCalculate; |
2118 | std::string queue_name; |
2119 | QueueKind queue_kind = eQueueKindUnknown; |
2120 | uint64_t queue_serial_number = 0; |
2121 | ExpeditedRegisterMap expedited_register_map; |
2122 | while (stop_packet.GetNameColonValue(key, value)) { |
2123 | if (key.compare("metype") == 0) { |
2124 | // exception type in big endian hex |
2125 | value.getAsInteger(16, exc_type); |
2126 | } else if (key.compare("medata") == 0) { |
2127 | // exception data in big endian hex |
2128 | uint64_t x; |
2129 | value.getAsInteger(16, x); |
2130 | exc_data.push_back(x); |
2131 | } else if (key.compare("thread") == 0) { |
2132 | // thread-id |
2133 | StringExtractorGDBRemote thread_id{value}; |
2134 | auto pid_tid = thread_id.GetPidTid(pid); |
2135 | if (pid_tid) { |
2136 | stop_pid = pid_tid->first; |
2137 | tid = pid_tid->second; |
2138 | } else |
2139 | tid = LLDB_INVALID_THREAD_ID0; |
2140 | } else if (key.compare("threads") == 0) { |
2141 | std::lock_guard<std::recursive_mutex> guard( |
2142 | m_thread_list_real.GetMutex()); |
2143 | UpdateThreadIDsFromStopReplyThreadsValue(value); |
2144 | } else if (key.compare("thread-pcs") == 0) { |
2145 | m_thread_pcs.clear(); |
2146 | // A comma separated list of all threads in the current |
2147 | // process that includes the thread for this stop reply packet |
2148 | lldb::addr_t pc; |
2149 | while (!value.empty()) { |
2150 | llvm::StringRef pc_str; |
2151 | std::tie(pc_str, value) = value.split(','); |
2152 | if (pc_str.getAsInteger(16, pc)) |
2153 | pc = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2154 | m_thread_pcs.push_back(pc); |
2155 | } |
2156 | } else if (key.compare("jstopinfo") == 0) { |
2157 | StringExtractor json_extractor(value); |
2158 | std::string json; |
2159 | // Now convert the HEX bytes into a string value |
2160 | json_extractor.GetHexByteString(json); |
2161 | |
2162 | // This JSON contains thread IDs and thread stop info for all threads. |
2163 | // It doesn't contain expedited registers, memory or queue info. |
2164 | m_jstopinfo_sp = StructuredData::ParseJSON(json); |
2165 | } else if (key.compare("hexname") == 0) { |
2166 | StringExtractor name_extractor(value); |
2167 | std::string name; |
2168 | // Now convert the HEX bytes into a string value |
2169 | name_extractor.GetHexByteString(thread_name); |
2170 | } else if (key.compare("name") == 0) { |
2171 | thread_name = std::string(value); |
2172 | } else if (key.compare("qaddr") == 0) { |
2173 | value.getAsInteger(16, thread_dispatch_qaddr); |
2174 | } else if (key.compare("dispatch_queue_t") == 0) { |
2175 | queue_vars_valid = true; |
2176 | value.getAsInteger(16, dispatch_queue_t); |
2177 | } else if (key.compare("qname") == 0) { |
2178 | queue_vars_valid = true; |
2179 | StringExtractor name_extractor(value); |
2180 | // Now convert the HEX bytes into a string value |
2181 | name_extractor.GetHexByteString(queue_name); |
2182 | } else if (key.compare("qkind") == 0) { |
2183 | queue_kind = llvm::StringSwitch<QueueKind>(value) |
2184 | .Case("serial", eQueueKindSerial) |
2185 | .Case("concurrent", eQueueKindConcurrent) |
2186 | .Default(eQueueKindUnknown); |
2187 | queue_vars_valid = queue_kind != eQueueKindUnknown; |
2188 | } else if (key.compare("qserialnum") == 0) { |
2189 | if (!value.getAsInteger(0, queue_serial_number)) |
2190 | queue_vars_valid = true; |
2191 | } else if (key.compare("reason") == 0) { |
2192 | reason = std::string(value); |
2193 | } else if (key.compare("description") == 0) { |
2194 | StringExtractor desc_extractor(value); |
2195 | // Now convert the HEX bytes into a string value |
2196 | desc_extractor.GetHexByteString(description); |
2197 | } else if (key.compare("memory") == 0) { |
2198 | // Expedited memory. GDB servers can choose to send back expedited |
2199 | // memory that can populate the L1 memory cache in the process so that |
2200 | // things like the frame pointer backchain can be expedited. This will |
2201 | // help stack backtracing be more efficient by not having to send as |
2202 | // many memory read requests down the remote GDB server. |
2203 | |
2204 | // Key/value pair format: memory:<addr>=<bytes>; |
2205 | // <addr> is a number whose base will be interpreted by the prefix: |
2206 | // "0x[0-9a-fA-F]+" for hex |
2207 | // "0[0-7]+" for octal |
2208 | // "[1-9]+" for decimal |
2209 | // <bytes> is native endian ASCII hex bytes just like the register |
2210 | // values |
2211 | llvm::StringRef addr_str, bytes_str; |
2212 | std::tie(addr_str, bytes_str) = value.split('='); |
2213 | if (!addr_str.empty() && !bytes_str.empty()) { |
2214 | lldb::addr_t mem_cache_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2215 | if (!addr_str.getAsInteger(0, mem_cache_addr)) { |
2216 | StringExtractor bytes(bytes_str); |
2217 | const size_t byte_size = bytes.GetBytesLeft() / 2; |
2218 | WritableDataBufferSP data_buffer_sp( |
2219 | new DataBufferHeap(byte_size, 0)); |
2220 | const size_t bytes_copied = |
2221 | bytes.GetHexBytes(data_buffer_sp->GetData(), 0); |
2222 | if (bytes_copied == byte_size) |
2223 | m_memory_cache.AddL1CacheData(mem_cache_addr, data_buffer_sp); |
2224 | } |
2225 | } |
2226 | } else if (key.compare("watch") == 0 || key.compare("rwatch") == 0 || |
2227 | key.compare("awatch") == 0) { |
2228 | // Support standard GDB remote stop reply packet 'TAAwatch:addr' |
2229 | lldb::addr_t wp_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2230 | value.getAsInteger(16, wp_addr); |
2231 | |
2232 | WatchpointSP wp_sp = |
2233 | GetTarget().GetWatchpointList().FindByAddress(wp_addr); |
2234 | uint32_t wp_index = LLDB_INVALID_INDEX32(4294967295U); |
2235 | |
2236 | if (wp_sp) |
2237 | wp_index = wp_sp->GetHardwareIndex(); |
2238 | |
2239 | reason = "watchpoint"; |
2240 | StreamString ostr; |
2241 | ostr.Printf("%" PRIu64"l" "u" " %" PRIu32"u", wp_addr, wp_index); |
2242 | description = std::string(ostr.GetString()); |
2243 | } else if (key.compare("library") == 0) { |
2244 | auto error = LoadModules(); |
2245 | if (error) { |
2246 | Log *log(GetLog(GDBRLog::Process)); |
2247 | LLDB_LOG_ERROR(log, std::move(error), "Failed to load modules: {0}")do { ::lldb_private::Log *log_private = (log); ::llvm::Error error_private = (std::move(error)); if (log_private && error_private ) { log_private->FormatError(::std::move(error_private), "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Failed to load modules: {0}"); } else ::llvm::consumeError (::std::move(error_private)); } while (0); |
2248 | } |
2249 | } else if (key.compare("fork") == 0 || key.compare("vfork") == 0) { |
2250 | // fork includes child pid/tid in thread-id format |
2251 | StringExtractorGDBRemote thread_id{value}; |
2252 | auto pid_tid = thread_id.GetPidTid(LLDB_INVALID_PROCESS_ID0); |
2253 | if (!pid_tid) { |
2254 | Log *log(GetLog(GDBRLog::Process)); |
2255 | LLDB_LOG(log, "Invalid PID/TID to fork: {0}", value)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Invalid PID/TID to fork: {0}", value); } while ( 0); |
2256 | pid_tid = {{LLDB_INVALID_PROCESS_ID0, LLDB_INVALID_THREAD_ID0}}; |
2257 | } |
2258 | |
2259 | reason = key.str(); |
2260 | StreamString ostr; |
2261 | ostr.Printf("%" PRIu64"l" "u" " %" PRIu64"l" "u", pid_tid->first, pid_tid->second); |
2262 | description = std::string(ostr.GetString()); |
2263 | } else if (key.size() == 2 && ::isxdigit(key[0]) && ::isxdigit(key[1])) { |
2264 | uint32_t reg = UINT32_MAX(4294967295U); |
2265 | if (!key.getAsInteger(16, reg)) |
2266 | expedited_register_map[reg] = std::string(std::move(value)); |
2267 | } |
2268 | } |
2269 | |
2270 | if (stop_pid != LLDB_INVALID_PROCESS_ID0 && stop_pid != pid) { |
2271 | Log *log = GetLog(GDBRLog::Process); |
2272 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Received stop for incorrect PID = {0} (inferior PID = {1})" , stop_pid, pid); } while (0) |
2273 | "Received stop for incorrect PID = {0} (inferior PID = {1})",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Received stop for incorrect PID = {0} (inferior PID = {1})" , stop_pid, pid); } while (0) |
2274 | stop_pid, pid)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Received stop for incorrect PID = {0} (inferior PID = {1})" , stop_pid, pid); } while (0); |
2275 | return eStateInvalid; |
2276 | } |
2277 | |
2278 | if (tid == LLDB_INVALID_THREAD_ID0) { |
2279 | // A thread id may be invalid if the response is old style 'S' packet |
2280 | // which does not provide the |
2281 | // thread information. So update the thread list and choose the first |
2282 | // one. |
2283 | UpdateThreadIDList(); |
2284 | |
2285 | if (!m_thread_ids.empty()) { |
2286 | tid = m_thread_ids.front(); |
2287 | } |
2288 | } |
2289 | |
2290 | ThreadSP thread_sp = SetThreadStopInfo( |
2291 | tid, expedited_register_map, signo, thread_name, reason, description, |
2292 | exc_type, exc_data, thread_dispatch_qaddr, queue_vars_valid, |
2293 | associated_with_dispatch_queue, dispatch_queue_t, queue_name, |
2294 | queue_kind, queue_serial_number); |
2295 | |
2296 | return eStateStopped; |
2297 | } break; |
2298 | |
2299 | case 'W': |
2300 | case 'X': |
2301 | // process exited |
2302 | return eStateExited; |
2303 | |
2304 | default: |
2305 | break; |
2306 | } |
2307 | return eStateInvalid; |
2308 | } |
2309 | |
2310 | void ProcessGDBRemote::RefreshStateAfterStop() { |
2311 | std::lock_guard<std::recursive_mutex> guard(m_thread_list_real.GetMutex()); |
2312 | |
2313 | m_thread_ids.clear(); |
2314 | m_thread_pcs.clear(); |
2315 | |
2316 | // Set the thread stop info. It might have a "threads" key whose value is a |
2317 | // list of all thread IDs in the current process, so m_thread_ids might get |
2318 | // set. |
2319 | // Check to see if SetThreadStopInfo() filled in m_thread_ids? |
2320 | if (m_thread_ids.empty()) { |
2321 | // No, we need to fetch the thread list manually |
2322 | UpdateThreadIDList(); |
2323 | } |
2324 | |
2325 | // We might set some stop info's so make sure the thread list is up to |
2326 | // date before we do that or we might overwrite what was computed here. |
2327 | UpdateThreadListIfNeeded(); |
2328 | |
2329 | if (m_last_stop_packet) |
2330 | SetThreadStopInfo(*m_last_stop_packet); |
2331 | m_last_stop_packet.reset(); |
2332 | |
2333 | // If we have queried for a default thread id |
2334 | if (m_initial_tid != LLDB_INVALID_THREAD_ID0) { |
2335 | m_thread_list.SetSelectedThreadByID(m_initial_tid); |
2336 | m_initial_tid = LLDB_INVALID_THREAD_ID0; |
2337 | } |
2338 | |
2339 | // Let all threads recover from stopping and do any clean up based on the |
2340 | // previous thread state (if any). |
2341 | m_thread_list_real.RefreshStateAfterStop(); |
2342 | } |
2343 | |
2344 | Status ProcessGDBRemote::DoHalt(bool &caused_stop) { |
2345 | Status error; |
2346 | |
2347 | if (m_public_state.GetValue() == eStateAttaching) { |
2348 | // We are being asked to halt during an attach. We need to just close our |
2349 | // file handle and debugserver will go away, and we can be done... |
2350 | m_gdb_comm.Disconnect(); |
2351 | } else |
2352 | caused_stop = m_gdb_comm.Interrupt(GetInterruptTimeout()); |
2353 | return error; |
2354 | } |
2355 | |
2356 | Status ProcessGDBRemote::DoDetach(bool keep_stopped) { |
2357 | Status error; |
2358 | Log *log = GetLog(GDBRLog::Process); |
2359 | LLDB_LOGF(log, "ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDetach(keep_stopped: %i)" , keep_stopped); } while (0); |
2360 | |
2361 | error = m_gdb_comm.Detach(keep_stopped); |
2362 | if (log) { |
2363 | if (error.Success()) |
2364 | log->PutCString( |
2365 | "ProcessGDBRemote::DoDetach() detach packet sent successfully"); |
2366 | else |
2367 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDetach() detach packet send failed: %s" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0) |
2368 | "ProcessGDBRemote::DoDetach() detach packet send failed: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDetach() detach packet send failed: %s" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0) |
2369 | error.AsCString() ? error.AsCString() : "<unknown error>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDetach() detach packet send failed: %s" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0); |
2370 | } |
2371 | |
2372 | if (!error.Success()) |
2373 | return error; |
2374 | |
2375 | // Sleep for one second to let the process get all detached... |
2376 | StopAsyncThread(); |
2377 | |
2378 | SetPrivateState(eStateDetached); |
2379 | ResumePrivateStateThread(); |
2380 | |
2381 | // KillDebugserverProcess (); |
2382 | return error; |
2383 | } |
2384 | |
2385 | Status ProcessGDBRemote::DoDestroy() { |
2386 | Status error; |
2387 | Log *log = GetLog(GDBRLog::Process); |
2388 | LLDB_LOGF(log, "ProcessGDBRemote::DoDestroy()")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy()"); } while (0); |
2389 | |
2390 | // Interrupt if our inferior is running... |
2391 | int exit_status = SIGABRT6; |
2392 | std::string exit_string; |
2393 | |
2394 | if (m_gdb_comm.IsConnected()) { |
2395 | if (m_public_state.GetValue() != eStateAttaching) { |
2396 | StringExtractorGDBRemote response; |
2397 | GDBRemoteCommunication::ScopedTimeout(m_gdb_comm, |
2398 | std::chrono::seconds(3)); |
2399 | |
2400 | if (m_gdb_comm.SendPacketAndWaitForResponse("k", response, |
2401 | GetInterruptTimeout()) == |
2402 | GDBRemoteCommunication::PacketResult::Success) { |
2403 | char packet_cmd = response.GetChar(0); |
2404 | |
2405 | if (packet_cmd == 'W' || packet_cmd == 'X') { |
2406 | #if defined(__APPLE__) |
2407 | // For Native processes on Mac OS X, we launch through the Host |
2408 | // Platform, then hand the process off to debugserver, which becomes |
2409 | // the parent process through "PT_ATTACH". Then when we go to kill |
2410 | // the process on Mac OS X we call ptrace(PT_KILL) to kill it, then |
2411 | // we call waitpid which returns with no error and the correct |
2412 | // status. But amusingly enough that doesn't seem to actually reap |
2413 | // the process, but instead it is left around as a Zombie. Probably |
2414 | // the kernel is in the process of switching ownership back to lldb |
2415 | // which was the original parent, and gets confused in the handoff. |
2416 | // Anyway, so call waitpid here to finally reap it. |
2417 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
2418 | if (platform_sp && platform_sp->IsHost()) { |
2419 | int status; |
2420 | ::pid_t reap_pid; |
2421 | reap_pid = waitpid(GetID(), &status, WNOHANG1); |
2422 | LLDB_LOGF(log, "Reaped pid: %d, status: %d.\n", reap_pid, status)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Reaped pid: %d, status: %d.\n", reap_pid , status); } while (0); |
2423 | } |
2424 | #endif |
2425 | SetLastStopPacket(response); |
2426 | ClearThreadIDList(); |
2427 | exit_status = response.GetHexU8(); |
2428 | } else { |
2429 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - got unexpected response " "to k packet: %s", response.GetStringRef().data()); } while ( 0) |
2430 | "ProcessGDBRemote::DoDestroy - got unexpected response "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - got unexpected response " "to k packet: %s", response.GetStringRef().data()); } while ( 0) |
2431 | "to k packet: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - got unexpected response " "to k packet: %s", response.GetStringRef().data()); } while ( 0) |
2432 | response.GetStringRef().data())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - got unexpected response " "to k packet: %s", response.GetStringRef().data()); } while ( 0); |
2433 | exit_string.assign("got unexpected response to k packet: "); |
2434 | exit_string.append(std::string(response.GetStringRef())); |
2435 | } |
2436 | } else { |
2437 | LLDB_LOGF(log, "ProcessGDBRemote::DoDestroy - failed to send k packet")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - failed to send k packet" ); } while (0); |
2438 | exit_string.assign("failed to send the k packet"); |
2439 | } |
2440 | } else { |
2441 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - killed or interrupted while " "attaching"); } while (0) |
2442 | "ProcessGDBRemote::DoDestroy - killed or interrupted while "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - killed or interrupted while " "attaching"); } while (0) |
2443 | "attaching")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoDestroy - killed or interrupted while " "attaching"); } while (0); |
2444 | exit_string.assign("killed or interrupted while attaching."); |
2445 | } |
2446 | } else { |
2447 | // If we missed setting the exit status on the way out, do it here. |
2448 | // NB set exit status can be called multiple times, the first one sets the |
2449 | // status. |
2450 | exit_string.assign("destroying when not connected to debugserver"); |
2451 | } |
2452 | |
2453 | SetExitStatus(exit_status, exit_string.c_str()); |
2454 | |
2455 | StopAsyncThread(); |
2456 | KillDebugserverProcess(); |
2457 | return error; |
2458 | } |
2459 | |
2460 | void ProcessGDBRemote::SetLastStopPacket( |
2461 | const StringExtractorGDBRemote &response) { |
2462 | const bool did_exec = |
2463 | response.GetStringRef().find(";reason:exec;") != std::string::npos; |
2464 | if (did_exec) { |
2465 | Log *log = GetLog(GDBRLog::Process); |
2466 | LLDB_LOGF(log, "ProcessGDBRemote::SetLastStopPacket () - detected exec")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::SetLastStopPacket () - detected exec" ); } while (0); |
2467 | |
2468 | m_thread_list_real.Clear(); |
2469 | m_thread_list.Clear(); |
2470 | BuildDynamicRegisterInfo(true); |
2471 | m_gdb_comm.ResetDiscoverableSettings(did_exec); |
2472 | } |
2473 | |
2474 | m_last_stop_packet = response; |
2475 | } |
2476 | |
2477 | void ProcessGDBRemote::SetUnixSignals(const UnixSignalsSP &signals_sp) { |
2478 | Process::SetUnixSignals(std::make_shared<GDBRemoteSignals>(signals_sp)); |
2479 | } |
2480 | |
2481 | // Process Queries |
2482 | |
2483 | bool ProcessGDBRemote::IsAlive() { |
2484 | return m_gdb_comm.IsConnected() && Process::IsAlive(); |
2485 | } |
2486 | |
2487 | addr_t ProcessGDBRemote::GetImageInfoAddress() { |
2488 | // request the link map address via the $qShlibInfoAddr packet |
2489 | lldb::addr_t addr = m_gdb_comm.GetShlibInfoAddr(); |
2490 | |
2491 | // the loaded module list can also provides a link map address |
2492 | if (addr == LLDB_INVALID_ADDRESS(18446744073709551615UL)) { |
2493 | llvm::Expected<LoadedModuleInfoList> list = GetLoadedModuleList(); |
2494 | if (!list) { |
2495 | Log *log = GetLog(GDBRLog::Process); |
2496 | LLDB_LOG_ERROR(log, list.takeError(), "Failed to read module list: {0}.")do { ::lldb_private::Log *log_private = (log); ::llvm::Error error_private = (list.takeError()); if (log_private && error_private ) { log_private->FormatError(::std::move(error_private), "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Failed to read module list: {0}."); } else ::llvm ::consumeError(::std::move(error_private)); } while (0); |
2497 | } else { |
2498 | addr = list->m_link_map; |
2499 | } |
2500 | } |
2501 | |
2502 | return addr; |
2503 | } |
2504 | |
2505 | void ProcessGDBRemote::WillPublicStop() { |
2506 | // See if the GDB remote client supports the JSON threads info. If so, we |
2507 | // gather stop info for all threads, expedited registers, expedited memory, |
2508 | // runtime queue information (iOS and MacOSX only), and more. Expediting |
2509 | // memory will help stack backtracing be much faster. Expediting registers |
2510 | // will make sure we don't have to read the thread registers for GPRs. |
2511 | m_jthreadsinfo_sp = m_gdb_comm.GetThreadsInfo(); |
2512 | |
2513 | if (m_jthreadsinfo_sp) { |
2514 | // Now set the stop info for each thread and also expedite any registers |
2515 | // and memory that was in the jThreadsInfo response. |
2516 | StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray(); |
2517 | if (thread_infos) { |
2518 | const size_t n = thread_infos->GetSize(); |
2519 | for (size_t i = 0; i < n; ++i) { |
2520 | StructuredData::Dictionary *thread_dict = |
2521 | thread_infos->GetItemAtIndex(i)->GetAsDictionary(); |
2522 | if (thread_dict) |
2523 | SetThreadStopInfo(thread_dict); |
2524 | } |
2525 | } |
2526 | } |
2527 | } |
2528 | |
2529 | // Process Memory |
2530 | size_t ProcessGDBRemote::DoReadMemory(addr_t addr, void *buf, size_t size, |
2531 | Status &error) { |
2532 | GetMaxMemorySize(); |
2533 | bool binary_memory_read = m_gdb_comm.GetxPacketSupported(); |
2534 | // M and m packets take 2 bytes for 1 byte of memory |
2535 | size_t max_memory_size = |
2536 | binary_memory_read ? m_max_memory_size : m_max_memory_size / 2; |
2537 | if (size > max_memory_size) { |
2538 | // Keep memory read sizes down to a sane limit. This function will be |
2539 | // called multiple times in order to complete the task by |
2540 | // lldb_private::Process so it is ok to do this. |
2541 | size = max_memory_size; |
2542 | } |
2543 | |
2544 | char packet[64]; |
2545 | int packet_len; |
2546 | packet_len = ::snprintf(packet, sizeof(packet), "%c%" PRIx64"l" "x" ",%" PRIx64"l" "x", |
2547 | binary_memory_read ? 'x' : 'm', (uint64_t)addr, |
2548 | (uint64_t)size); |
2549 | assert(packet_len + 1 < (int)sizeof(packet))(static_cast <bool> (packet_len + 1 < (int)sizeof(packet )) ? void (0) : __assert_fail ("packet_len + 1 < (int)sizeof(packet)" , "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 2549, __extension__ __PRETTY_FUNCTION__)); |
2550 | UNUSED_IF_ASSERT_DISABLED(packet_len)((void)(packet_len)); |
2551 | StringExtractorGDBRemote response; |
2552 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet, response, |
2553 | GetInterruptTimeout()) == |
2554 | GDBRemoteCommunication::PacketResult::Success) { |
2555 | if (response.IsNormalResponse()) { |
2556 | error.Clear(); |
2557 | if (binary_memory_read) { |
2558 | // The lower level GDBRemoteCommunication packet receive layer has |
2559 | // already de-quoted any 0x7d character escaping that was present in |
2560 | // the packet |
2561 | |
2562 | size_t data_received_size = response.GetBytesLeft(); |
2563 | if (data_received_size > size) { |
2564 | // Don't write past the end of BUF if the remote debug server gave us |
2565 | // too much data for some reason. |
2566 | data_received_size = size; |
2567 | } |
2568 | memcpy(buf, response.GetStringRef().data(), data_received_size); |
2569 | return data_received_size; |
2570 | } else { |
2571 | return response.GetHexBytes( |
2572 | llvm::MutableArrayRef<uint8_t>((uint8_t *)buf, size), '\xdd'); |
2573 | } |
2574 | } else if (response.IsErrorResponse()) |
2575 | error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64"l" "x", addr); |
2576 | else if (response.IsUnsupportedResponse()) |
2577 | error.SetErrorStringWithFormat( |
2578 | "GDB server does not support reading memory"); |
2579 | else |
2580 | error.SetErrorStringWithFormat( |
2581 | "unexpected response to GDB server memory read packet '%s': '%s'", |
2582 | packet, response.GetStringRef().data()); |
2583 | } else { |
2584 | error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); |
2585 | } |
2586 | return 0; |
2587 | } |
2588 | |
2589 | bool ProcessGDBRemote::SupportsMemoryTagging() { |
2590 | return m_gdb_comm.GetMemoryTaggingSupported(); |
2591 | } |
2592 | |
2593 | llvm::Expected<std::vector<uint8_t>> |
2594 | ProcessGDBRemote::DoReadMemoryTags(lldb::addr_t addr, size_t len, |
2595 | int32_t type) { |
2596 | // By this point ReadMemoryTags has validated that tagging is enabled |
2597 | // for this target/process/address. |
2598 | DataBufferSP buffer_sp = m_gdb_comm.ReadMemoryTags(addr, len, type); |
2599 | if (!buffer_sp) { |
2600 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
2601 | "Error reading memory tags from remote"); |
2602 | } |
2603 | |
2604 | // Return the raw tag data |
2605 | llvm::ArrayRef<uint8_t> tag_data = buffer_sp->GetData(); |
2606 | std::vector<uint8_t> got; |
2607 | got.reserve(tag_data.size()); |
2608 | std::copy(tag_data.begin(), tag_data.end(), std::back_inserter(got)); |
2609 | return got; |
2610 | } |
2611 | |
2612 | Status ProcessGDBRemote::DoWriteMemoryTags(lldb::addr_t addr, size_t len, |
2613 | int32_t type, |
2614 | const std::vector<uint8_t> &tags) { |
2615 | // By now WriteMemoryTags should have validated that tagging is enabled |
2616 | // for this target/process. |
2617 | return m_gdb_comm.WriteMemoryTags(addr, len, type, tags); |
2618 | } |
2619 | |
2620 | Status ProcessGDBRemote::WriteObjectFile( |
2621 | std::vector<ObjectFile::LoadableData> entries) { |
2622 | Status error; |
2623 | // Sort the entries by address because some writes, like those to flash |
2624 | // memory, must happen in order of increasing address. |
2625 | std::stable_sort( |
2626 | std::begin(entries), std::end(entries), |
2627 | [](const ObjectFile::LoadableData a, const ObjectFile::LoadableData b) { |
2628 | return a.Dest < b.Dest; |
2629 | }); |
2630 | m_allow_flash_writes = true; |
2631 | error = Process::WriteObjectFile(entries); |
2632 | if (error.Success()) |
2633 | error = FlashDone(); |
2634 | else |
2635 | // Even though some of the writing failed, try to send a flash done if some |
2636 | // of the writing succeeded so the flash state is reset to normal, but |
2637 | // don't stomp on the error status that was set in the write failure since |
2638 | // that's the one we want to report back. |
2639 | FlashDone(); |
2640 | m_allow_flash_writes = false; |
2641 | return error; |
2642 | } |
2643 | |
2644 | bool ProcessGDBRemote::HasErased(FlashRange range) { |
2645 | auto size = m_erased_flash_ranges.GetSize(); |
2646 | for (size_t i = 0; i < size; ++i) |
2647 | if (m_erased_flash_ranges.GetEntryAtIndex(i)->Contains(range)) |
2648 | return true; |
2649 | return false; |
2650 | } |
2651 | |
2652 | Status ProcessGDBRemote::FlashErase(lldb::addr_t addr, size_t size) { |
2653 | Status status; |
2654 | |
2655 | MemoryRegionInfo region; |
2656 | status = GetMemoryRegionInfo(addr, region); |
2657 | if (!status.Success()) |
2658 | return status; |
2659 | |
2660 | // The gdb spec doesn't say if erasures are allowed across multiple regions, |
2661 | // but we'll disallow it to be safe and to keep the logic simple by worring |
2662 | // about only one region's block size. DoMemoryWrite is this function's |
2663 | // primary user, and it can easily keep writes within a single memory region |
2664 | if (addr + size > region.GetRange().GetRangeEnd()) { |
2665 | status.SetErrorString("Unable to erase flash in multiple regions"); |
2666 | return status; |
2667 | } |
2668 | |
2669 | uint64_t blocksize = region.GetBlocksize(); |
2670 | if (blocksize == 0) { |
2671 | status.SetErrorString("Unable to erase flash because blocksize is 0"); |
2672 | return status; |
2673 | } |
2674 | |
2675 | // Erasures can only be done on block boundary adresses, so round down addr |
2676 | // and round up size |
2677 | lldb::addr_t block_start_addr = addr - (addr % blocksize); |
2678 | size += (addr - block_start_addr); |
2679 | if ((size % blocksize) != 0) |
2680 | size += (blocksize - size % blocksize); |
2681 | |
2682 | FlashRange range(block_start_addr, size); |
2683 | |
2684 | if (HasErased(range)) |
2685 | return status; |
2686 | |
2687 | // We haven't erased the entire range, but we may have erased part of it. |
2688 | // (e.g., block A is already erased and range starts in A and ends in B). So, |
2689 | // adjust range if necessary to exclude already erased blocks. |
2690 | if (!m_erased_flash_ranges.IsEmpty()) { |
2691 | // Assuming that writes and erasures are done in increasing addr order, |
2692 | // because that is a requirement of the vFlashWrite command. Therefore, we |
2693 | // only need to look at the last range in the list for overlap. |
2694 | const auto &last_range = *m_erased_flash_ranges.Back(); |
2695 | if (range.GetRangeBase() < last_range.GetRangeEnd()) { |
2696 | auto overlap = last_range.GetRangeEnd() - range.GetRangeBase(); |
2697 | // overlap will be less than range.GetByteSize() or else HasErased() |
2698 | // would have been true |
2699 | range.SetByteSize(range.GetByteSize() - overlap); |
2700 | range.SetRangeBase(range.GetRangeBase() + overlap); |
2701 | } |
2702 | } |
2703 | |
2704 | StreamString packet; |
2705 | packet.Printf("vFlashErase:%" PRIx64"l" "x" ",%" PRIx64"l" "x", range.GetRangeBase(), |
2706 | (uint64_t)range.GetByteSize()); |
2707 | |
2708 | StringExtractorGDBRemote response; |
2709 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
2710 | GetInterruptTimeout()) == |
2711 | GDBRemoteCommunication::PacketResult::Success) { |
2712 | if (response.IsOKResponse()) { |
2713 | m_erased_flash_ranges.Insert(range, true); |
2714 | } else { |
2715 | if (response.IsErrorResponse()) |
2716 | status.SetErrorStringWithFormat("flash erase failed for 0x%" PRIx64"l" "x", |
2717 | addr); |
2718 | else if (response.IsUnsupportedResponse()) |
2719 | status.SetErrorStringWithFormat("GDB server does not support flashing"); |
2720 | else |
2721 | status.SetErrorStringWithFormat( |
2722 | "unexpected response to GDB server flash erase packet '%s': '%s'", |
2723 | packet.GetData(), response.GetStringRef().data()); |
2724 | } |
2725 | } else { |
2726 | status.SetErrorStringWithFormat("failed to send packet: '%s'", |
2727 | packet.GetData()); |
2728 | } |
2729 | return status; |
2730 | } |
2731 | |
2732 | Status ProcessGDBRemote::FlashDone() { |
2733 | Status status; |
2734 | // If we haven't erased any blocks, then we must not have written anything |
2735 | // either, so there is no need to actually send a vFlashDone command |
2736 | if (m_erased_flash_ranges.IsEmpty()) |
2737 | return status; |
2738 | StringExtractorGDBRemote response; |
2739 | if (m_gdb_comm.SendPacketAndWaitForResponse("vFlashDone", response, |
2740 | GetInterruptTimeout()) == |
2741 | GDBRemoteCommunication::PacketResult::Success) { |
2742 | if (response.IsOKResponse()) { |
2743 | m_erased_flash_ranges.Clear(); |
2744 | } else { |
2745 | if (response.IsErrorResponse()) |
2746 | status.SetErrorStringWithFormat("flash done failed"); |
2747 | else if (response.IsUnsupportedResponse()) |
2748 | status.SetErrorStringWithFormat("GDB server does not support flashing"); |
2749 | else |
2750 | status.SetErrorStringWithFormat( |
2751 | "unexpected response to GDB server flash done packet: '%s'", |
2752 | response.GetStringRef().data()); |
2753 | } |
2754 | } else { |
2755 | status.SetErrorStringWithFormat("failed to send flash done packet"); |
2756 | } |
2757 | return status; |
2758 | } |
2759 | |
2760 | size_t ProcessGDBRemote::DoWriteMemory(addr_t addr, const void *buf, |
2761 | size_t size, Status &error) { |
2762 | GetMaxMemorySize(); |
2763 | // M and m packets take 2 bytes for 1 byte of memory |
2764 | size_t max_memory_size = m_max_memory_size / 2; |
2765 | if (size > max_memory_size) { |
2766 | // Keep memory read sizes down to a sane limit. This function will be |
2767 | // called multiple times in order to complete the task by |
2768 | // lldb_private::Process so it is ok to do this. |
2769 | size = max_memory_size; |
2770 | } |
2771 | |
2772 | StreamGDBRemote packet; |
2773 | |
2774 | MemoryRegionInfo region; |
2775 | Status region_status = GetMemoryRegionInfo(addr, region); |
2776 | |
2777 | bool is_flash = |
2778 | region_status.Success() && region.GetFlash() == MemoryRegionInfo::eYes; |
2779 | |
2780 | if (is_flash) { |
2781 | if (!m_allow_flash_writes) { |
2782 | error.SetErrorString("Writing to flash memory is not allowed"); |
2783 | return 0; |
2784 | } |
2785 | // Keep the write within a flash memory region |
2786 | if (addr + size > region.GetRange().GetRangeEnd()) |
2787 | size = region.GetRange().GetRangeEnd() - addr; |
2788 | // Flash memory must be erased before it can be written |
2789 | error = FlashErase(addr, size); |
2790 | if (!error.Success()) |
2791 | return 0; |
2792 | packet.Printf("vFlashWrite:%" PRIx64"l" "x" ":", addr); |
2793 | packet.PutEscapedBytes(buf, size); |
2794 | } else { |
2795 | packet.Printf("M%" PRIx64"l" "x" ",%" PRIx64"l" "x" ":", addr, (uint64_t)size); |
2796 | packet.PutBytesAsRawHex8(buf, size, endian::InlHostByteOrder(), |
2797 | endian::InlHostByteOrder()); |
2798 | } |
2799 | StringExtractorGDBRemote response; |
2800 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response, |
2801 | GetInterruptTimeout()) == |
2802 | GDBRemoteCommunication::PacketResult::Success) { |
2803 | if (response.IsOKResponse()) { |
2804 | error.Clear(); |
2805 | return size; |
2806 | } else if (response.IsErrorResponse()) |
2807 | error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64"l" "x", |
2808 | addr); |
2809 | else if (response.IsUnsupportedResponse()) |
2810 | error.SetErrorStringWithFormat( |
2811 | "GDB server does not support writing memory"); |
2812 | else |
2813 | error.SetErrorStringWithFormat( |
2814 | "unexpected response to GDB server memory write packet '%s': '%s'", |
2815 | packet.GetData(), response.GetStringRef().data()); |
2816 | } else { |
2817 | error.SetErrorStringWithFormat("failed to send packet: '%s'", |
2818 | packet.GetData()); |
2819 | } |
2820 | return 0; |
2821 | } |
2822 | |
2823 | lldb::addr_t ProcessGDBRemote::DoAllocateMemory(size_t size, |
2824 | uint32_t permissions, |
2825 | Status &error) { |
2826 | Log *log = GetLog(LLDBLog::Process | LLDBLog::Expressions); |
2827 | addr_t allocated_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2828 | |
2829 | if (m_gdb_comm.SupportsAllocDeallocMemory() != eLazyBoolNo) { |
2830 | allocated_addr = m_gdb_comm.AllocateMemory(size, permissions); |
2831 | if (allocated_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) || |
2832 | m_gdb_comm.SupportsAllocDeallocMemory() == eLazyBoolYes) |
2833 | return allocated_addr; |
2834 | } |
2835 | |
2836 | if (m_gdb_comm.SupportsAllocDeallocMemory() == eLazyBoolNo) { |
2837 | // Call mmap() to create memory in the inferior.. |
2838 | unsigned prot = 0; |
2839 | if (permissions & lldb::ePermissionsReadable) |
2840 | prot |= eMmapProtRead; |
2841 | if (permissions & lldb::ePermissionsWritable) |
2842 | prot |= eMmapProtWrite; |
2843 | if (permissions & lldb::ePermissionsExecutable) |
2844 | prot |= eMmapProtExec; |
2845 | |
2846 | if (InferiorCallMmap(this, allocated_addr, 0, size, prot, |
2847 | eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) |
2848 | m_addr_to_mmap_size[allocated_addr] = size; |
2849 | else { |
2850 | allocated_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
2851 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no direct stub support for memory " "allocation, and InferiorCallMmap also failed - is stub " "missing register context save/restore capability?" , __FUNCTION__); } while (0) |
2852 | "ProcessGDBRemote::%s no direct stub support for memory "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no direct stub support for memory " "allocation, and InferiorCallMmap also failed - is stub " "missing register context save/restore capability?" , __FUNCTION__); } while (0) |
2853 | "allocation, and InferiorCallMmap also failed - is stub "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no direct stub support for memory " "allocation, and InferiorCallMmap also failed - is stub " "missing register context save/restore capability?" , __FUNCTION__); } while (0) |
2854 | "missing register context save/restore capability?",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no direct stub support for memory " "allocation, and InferiorCallMmap also failed - is stub " "missing register context save/restore capability?" , __FUNCTION__); } while (0) |
2855 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s no direct stub support for memory " "allocation, and InferiorCallMmap also failed - is stub " "missing register context save/restore capability?" , __FUNCTION__); } while (0); |
2856 | } |
2857 | } |
2858 | |
2859 | if (allocated_addr == LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
2860 | error.SetErrorStringWithFormat( |
2861 | "unable to allocate %" PRIu64"l" "u" " bytes of memory with permissions %s", |
2862 | (uint64_t)size, GetPermissionsAsCString(permissions)); |
2863 | else |
2864 | error.Clear(); |
2865 | return allocated_addr; |
2866 | } |
2867 | |
2868 | Status ProcessGDBRemote::DoGetMemoryRegionInfo(addr_t load_addr, |
2869 | MemoryRegionInfo ®ion_info) { |
2870 | |
2871 | Status error(m_gdb_comm.GetMemoryRegionInfo(load_addr, region_info)); |
2872 | return error; |
2873 | } |
2874 | |
2875 | Status ProcessGDBRemote::GetWatchpointSupportInfo(uint32_t &num) { |
2876 | |
2877 | Status error(m_gdb_comm.GetWatchpointSupportInfo(num)); |
2878 | return error; |
2879 | } |
2880 | |
2881 | Status ProcessGDBRemote::GetWatchpointSupportInfo(uint32_t &num, bool &after) { |
2882 | Status error(m_gdb_comm.GetWatchpointSupportInfo( |
2883 | num, after, GetTarget().GetArchitecture())); |
2884 | return error; |
2885 | } |
2886 | |
2887 | Status ProcessGDBRemote::DoDeallocateMemory(lldb::addr_t addr) { |
2888 | Status error; |
2889 | LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); |
2890 | |
2891 | switch (supported) { |
2892 | case eLazyBoolCalculate: |
2893 | // We should never be deallocating memory without allocating memory first |
2894 | // so we should never get eLazyBoolCalculate |
2895 | error.SetErrorString( |
2896 | "tried to deallocate memory without ever allocating memory"); |
2897 | break; |
2898 | |
2899 | case eLazyBoolYes: |
2900 | if (!m_gdb_comm.DeallocateMemory(addr)) |
2901 | error.SetErrorStringWithFormat( |
2902 | "unable to deallocate memory at 0x%" PRIx64"l" "x", addr); |
2903 | break; |
2904 | |
2905 | case eLazyBoolNo: |
2906 | // Call munmap() to deallocate memory in the inferior.. |
2907 | { |
2908 | MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); |
2909 | if (pos != m_addr_to_mmap_size.end() && |
2910 | InferiorCallMunmap(this, addr, pos->second)) |
2911 | m_addr_to_mmap_size.erase(pos); |
2912 | else |
2913 | error.SetErrorStringWithFormat( |
2914 | "unable to deallocate memory at 0x%" PRIx64"l" "x", addr); |
2915 | } |
2916 | break; |
2917 | } |
2918 | |
2919 | return error; |
2920 | } |
2921 | |
2922 | // Process STDIO |
2923 | size_t ProcessGDBRemote::PutSTDIN(const char *src, size_t src_len, |
2924 | Status &error) { |
2925 | if (m_stdio_communication.IsConnected()) { |
2926 | ConnectionStatus status; |
2927 | m_stdio_communication.Write(src, src_len, status, nullptr); |
2928 | } else if (m_stdin_forward) { |
2929 | m_gdb_comm.SendStdinNotification(src, src_len); |
2930 | } |
2931 | return 0; |
2932 | } |
2933 | |
2934 | Status ProcessGDBRemote::EnableBreakpointSite(BreakpointSite *bp_site) { |
2935 | Status error; |
2936 | assert(bp_site != nullptr)(static_cast <bool> (bp_site != nullptr) ? void (0) : __assert_fail ("bp_site != nullptr", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 2936, __extension__ __PRETTY_FUNCTION__)); |
2937 | |
2938 | // Get logging info |
2939 | Log *log = GetLog(GDBRLog::Breakpoints); |
2940 | user_id_t site_id = bp_site->GetID(); |
2941 | |
2942 | // Get the breakpoint address |
2943 | const addr_t addr = bp_site->GetLoadAddress(); |
2944 | |
2945 | // Log that a breakpoint was requested |
2946 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x", site_id, (uint64_t)addr); } while (0) |
2947 | "ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x", site_id, (uint64_t)addr); } while (0) |
2948 | ") address = 0x%" PRIx64,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x", site_id, (uint64_t)addr); } while (0) |
2949 | site_id, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x", site_id, (uint64_t)addr); } while (0); |
2950 | |
2951 | // Breakpoint already exists and is enabled |
2952 | if (bp_site->IsEnabled()) { |
2953 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x" " -- SUCCESS (already enabled)" , site_id, (uint64_t)addr); } while (0) |
2954 | "ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x" " -- SUCCESS (already enabled)" , site_id, (uint64_t)addr); } while (0) |
2955 | ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x" " -- SUCCESS (already enabled)" , site_id, (uint64_t)addr); } while (0) |
2956 | site_id, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" "l" "u" ") address = 0x%" "l" "x" " -- SUCCESS (already enabled)" , site_id, (uint64_t)addr); } while (0); |
2957 | return error; |
2958 | } |
2959 | |
2960 | // Get the software breakpoint trap opcode size |
2961 | const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site); |
2962 | |
2963 | // SupportsGDBStoppointPacket() simply checks a boolean, indicating if this |
2964 | // breakpoint type is supported by the remote stub. These are set to true by |
2965 | // default, and later set to false only after we receive an unimplemented |
2966 | // response when sending a breakpoint packet. This means initially that |
2967 | // unless we were specifically instructed to use a hardware breakpoint, LLDB |
2968 | // will attempt to set a software breakpoint. HardwareRequired() also queries |
2969 | // a boolean variable which indicates if the user specifically asked for |
2970 | // hardware breakpoints. If true then we will skip over software |
2971 | // breakpoints. |
2972 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware) && |
2973 | (!bp_site->HardwareRequired())) { |
2974 | // Try to send off a software breakpoint packet ($Z0) |
2975 | uint8_t error_no = m_gdb_comm.SendGDBStoppointTypePacket( |
2976 | eBreakpointSoftware, true, addr, bp_op_size, GetInterruptTimeout()); |
2977 | if (error_no == 0) { |
2978 | // The breakpoint was placed successfully |
2979 | bp_site->SetEnabled(true); |
2980 | bp_site->SetType(BreakpointSite::eExternal); |
2981 | return error; |
2982 | } |
2983 | |
2984 | // SendGDBStoppointTypePacket() will return an error if it was unable to |
2985 | // set this breakpoint. We need to differentiate between a error specific |
2986 | // to placing this breakpoint or if we have learned that this breakpoint |
2987 | // type is unsupported. To do this, we must test the support boolean for |
2988 | // this breakpoint type to see if it now indicates that this breakpoint |
2989 | // type is unsupported. If they are still supported then we should return |
2990 | // with the error code. If they are now unsupported, then we would like to |
2991 | // fall through and try another form of breakpoint. |
2992 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) { |
2993 | if (error_no != UINT8_MAX(255)) |
2994 | error.SetErrorStringWithFormat( |
2995 | "error: %d sending the breakpoint request", error_no); |
2996 | else |
2997 | error.SetErrorString("error sending the breakpoint request"); |
2998 | return error; |
2999 | } |
3000 | |
3001 | // We reach here when software breakpoints have been found to be |
3002 | // unsupported. For future calls to set a breakpoint, we will not attempt |
3003 | // to set a breakpoint with a type that is known not to be supported. |
3004 | LLDB_LOGF(log, "Software breakpoints are unsupported")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Software breakpoints are unsupported" ); } while (0); |
3005 | |
3006 | // So we will fall through and try a hardware breakpoint |
3007 | } |
3008 | |
3009 | // The process of setting a hardware breakpoint is much the same as above. |
3010 | // We check the supported boolean for this breakpoint type, and if it is |
3011 | // thought to be supported then we will try to set this breakpoint with a |
3012 | // hardware breakpoint. |
3013 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) { |
3014 | // Try to send off a hardware breakpoint packet ($Z1) |
3015 | uint8_t error_no = m_gdb_comm.SendGDBStoppointTypePacket( |
3016 | eBreakpointHardware, true, addr, bp_op_size, GetInterruptTimeout()); |
3017 | if (error_no == 0) { |
3018 | // The breakpoint was placed successfully |
3019 | bp_site->SetEnabled(true); |
3020 | bp_site->SetType(BreakpointSite::eHardware); |
3021 | return error; |
3022 | } |
3023 | |
3024 | // Check if the error was something other then an unsupported breakpoint |
3025 | // type |
3026 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) { |
3027 | // Unable to set this hardware breakpoint |
3028 | if (error_no != UINT8_MAX(255)) |
3029 | error.SetErrorStringWithFormat( |
3030 | "error: %d sending the hardware breakpoint request " |
3031 | "(hardware breakpoint resources might be exhausted or unavailable)", |
3032 | error_no); |
3033 | else |
3034 | error.SetErrorString("error sending the hardware breakpoint request " |
3035 | "(hardware breakpoint resources " |
3036 | "might be exhausted or unavailable)"); |
3037 | return error; |
3038 | } |
3039 | |
3040 | // We will reach here when the stub gives an unsupported response to a |
3041 | // hardware breakpoint |
3042 | LLDB_LOGF(log, "Hardware breakpoints are unsupported")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Hardware breakpoints are unsupported" ); } while (0); |
3043 | |
3044 | // Finally we will falling through to a #trap style breakpoint |
3045 | } |
3046 | |
3047 | // Don't fall through when hardware breakpoints were specifically requested |
3048 | if (bp_site->HardwareRequired()) { |
3049 | error.SetErrorString("hardware breakpoints are not supported"); |
3050 | return error; |
3051 | } |
3052 | |
3053 | // As a last resort we want to place a manual breakpoint. An instruction is |
3054 | // placed into the process memory using memory write packets. |
3055 | return EnableSoftwareBreakpoint(bp_site); |
3056 | } |
3057 | |
3058 | Status ProcessGDBRemote::DisableBreakpointSite(BreakpointSite *bp_site) { |
3059 | Status error; |
3060 | assert(bp_site != nullptr)(static_cast <bool> (bp_site != nullptr) ? void (0) : __assert_fail ("bp_site != nullptr", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3060, __extension__ __PRETTY_FUNCTION__)); |
3061 | addr_t addr = bp_site->GetLoadAddress(); |
3062 | user_id_t site_id = bp_site->GetID(); |
3063 | Log *log = GetLog(GDBRLog::Breakpoints); |
3064 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x", site_id, (uint64_t)addr); } while (0) |
3065 | "ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x", site_id, (uint64_t)addr); } while (0) |
3066 | ") addr = 0x%8.8" PRIx64,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x", site_id, (uint64_t)addr); } while (0) |
3067 | site_id, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x", site_id, (uint64_t)addr); } while (0); |
3068 | |
3069 | if (bp_site->IsEnabled()) { |
3070 | const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site); |
3071 | |
3072 | BreakpointSite::Type bp_type = bp_site->GetType(); |
3073 | switch (bp_type) { |
3074 | case BreakpointSite::eSoftware: |
3075 | error = DisableSoftwareBreakpoint(bp_site); |
3076 | break; |
3077 | |
3078 | case BreakpointSite::eHardware: |
3079 | if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, false, |
3080 | addr, bp_op_size, |
3081 | GetInterruptTimeout())) |
3082 | error.SetErrorToGenericError(); |
3083 | break; |
3084 | |
3085 | case BreakpointSite::eExternal: { |
3086 | if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, |
3087 | addr, bp_op_size, |
3088 | GetInterruptTimeout())) |
3089 | error.SetErrorToGenericError(); |
3090 | } break; |
3091 | } |
3092 | if (error.Success()) |
3093 | bp_site->SetEnabled(false); |
3094 | } else { |
3095 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , site_id, (uint64_t)addr); } while (0) |
3096 | "ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , site_id, (uint64_t)addr); } while (0) |
3097 | ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , site_id, (uint64_t)addr); } while (0) |
3098 | site_id, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableBreakpointSite (site_id = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , site_id, (uint64_t)addr); } while (0); |
3099 | return error; |
3100 | } |
3101 | |
3102 | if (error.Success()) |
3103 | error.SetErrorToGenericError(); |
3104 | return error; |
3105 | } |
3106 | |
3107 | // Pre-requisite: wp != NULL. |
3108 | static GDBStoppointType GetGDBStoppointType(Watchpoint *wp) { |
3109 | assert(wp)(static_cast <bool> (wp) ? void (0) : __assert_fail ("wp" , "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3109, __extension__ __PRETTY_FUNCTION__)); |
3110 | bool watch_read = wp->WatchpointRead(); |
3111 | bool watch_write = wp->WatchpointWrite(); |
3112 | |
3113 | // watch_read and watch_write cannot both be false. |
3114 | assert(watch_read || watch_write)(static_cast <bool> (watch_read || watch_write) ? void ( 0) : __assert_fail ("watch_read || watch_write", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 3114, __extension__ __PRETTY_FUNCTION__)); |
3115 | if (watch_read && watch_write) |
3116 | return eWatchpointReadWrite; |
3117 | else if (watch_read) |
3118 | return eWatchpointRead; |
3119 | else // Must be watch_write, then. |
3120 | return eWatchpointWrite; |
3121 | } |
3122 | |
3123 | Status ProcessGDBRemote::EnableWatchpoint(Watchpoint *wp, bool notify) { |
3124 | Status error; |
3125 | if (wp) { |
3126 | user_id_t watchID = wp->GetID(); |
3127 | addr_t addr = wp->GetLoadAddress(); |
3128 | Log *log(GetLog(GDBRLog::Watchpoints)); |
3129 | LLDB_LOGF(log, "ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ")", watchID); } while (0) |
3130 | watchID)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ")", watchID); } while (0); |
3131 | if (wp->IsEnabled()) { |
3132 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" ": watchpoint already enabled." , watchID, (uint64_t)addr); } while (0) |
3133 | "ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" ": watchpoint already enabled." , watchID, (uint64_t)addr); } while (0) |
3134 | ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" ": watchpoint already enabled." , watchID, (uint64_t)addr); } while (0) |
3135 | watchID, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" ": watchpoint already enabled." , watchID, (uint64_t)addr); } while (0); |
3136 | return error; |
3137 | } |
3138 | |
3139 | GDBStoppointType type = GetGDBStoppointType(wp); |
3140 | // Pass down an appropriate z/Z packet... |
3141 | if (m_gdb_comm.SupportsGDBStoppointPacket(type)) { |
3142 | if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, |
3143 | wp->GetByteSize(), |
3144 | GetInterruptTimeout()) == 0) { |
3145 | wp->SetEnabled(true, notify); |
3146 | return error; |
3147 | } else |
3148 | error.SetErrorString("sending gdb watchpoint packet failed"); |
3149 | } else |
3150 | error.SetErrorString("watchpoints not supported"); |
3151 | } else { |
3152 | error.SetErrorString("Watchpoint argument was NULL."); |
3153 | } |
3154 | if (error.Success()) |
3155 | error.SetErrorToGenericError(); |
3156 | return error; |
3157 | } |
3158 | |
3159 | Status ProcessGDBRemote::DisableWatchpoint(Watchpoint *wp, bool notify) { |
3160 | Status error; |
3161 | if (wp) { |
3162 | user_id_t watchID = wp->GetID(); |
3163 | |
3164 | Log *log(GetLog(GDBRLog::Watchpoints)); |
3165 | |
3166 | addr_t addr = wp->GetLoadAddress(); |
3167 | |
3168 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x", watchID, (uint64_t)addr); } while (0) |
3169 | "ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x", watchID, (uint64_t)addr); } while (0) |
3170 | ") addr = 0x%8.8" PRIx64,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x", watchID, (uint64_t)addr); } while (0) |
3171 | watchID, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x", watchID, (uint64_t)addr); } while (0); |
3172 | |
3173 | if (!wp->IsEnabled()) { |
3174 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , watchID, (uint64_t)addr); } while (0) |
3175 | "ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , watchID, (uint64_t)addr); } while (0) |
3176 | ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , watchID, (uint64_t)addr); } while (0) |
3177 | watchID, (uint64_t)addr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DisableWatchpoint (watchID = %" "l" "u" ") addr = 0x%8.8" "l" "x" " -- SUCCESS (already disabled)" , watchID, (uint64_t)addr); } while (0); |
3178 | // See also 'class WatchpointSentry' within StopInfo.cpp. This disabling |
3179 | // attempt might come from the user-supplied actions, we'll route it in |
3180 | // order for the watchpoint object to intelligently process this action. |
3181 | wp->SetEnabled(false, notify); |
3182 | return error; |
3183 | } |
3184 | |
3185 | if (wp->IsHardware()) { |
3186 | GDBStoppointType type = GetGDBStoppointType(wp); |
3187 | // Pass down an appropriate z/Z packet... |
3188 | if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, |
3189 | wp->GetByteSize(), |
3190 | GetInterruptTimeout()) == 0) { |
3191 | wp->SetEnabled(false, notify); |
3192 | return error; |
3193 | } else |
3194 | error.SetErrorString("sending gdb watchpoint packet failed"); |
3195 | } |
3196 | // TODO: clear software watchpoints if we implement them |
3197 | } else { |
3198 | error.SetErrorString("Watchpoint argument was NULL."); |
3199 | } |
3200 | if (error.Success()) |
3201 | error.SetErrorToGenericError(); |
3202 | return error; |
3203 | } |
3204 | |
3205 | void ProcessGDBRemote::Clear() { |
3206 | m_thread_list_real.Clear(); |
3207 | m_thread_list.Clear(); |
3208 | } |
3209 | |
3210 | Status ProcessGDBRemote::DoSignal(int signo) { |
3211 | Status error; |
3212 | Log *log = GetLog(GDBRLog::Process); |
3213 | LLDB_LOGF(log, "ProcessGDBRemote::DoSignal (signal = %d)", signo)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::DoSignal (signal = %d)" , signo); } while (0); |
3214 | |
3215 | if (!m_gdb_comm.SendAsyncSignal(signo, GetInterruptTimeout())) |
3216 | error.SetErrorStringWithFormat("failed to send signal %i", signo); |
3217 | return error; |
3218 | } |
3219 | |
3220 | Status |
3221 | ProcessGDBRemote::EstablishConnectionIfNeeded(const ProcessInfo &process_info) { |
3222 | // Make sure we aren't already connected? |
3223 | if (m_gdb_comm.IsConnected()) |
3224 | return Status(); |
3225 | |
3226 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
3227 | if (platform_sp && !platform_sp->IsHost()) |
3228 | return Status("Lost debug server connection"); |
3229 | |
3230 | auto error = LaunchAndConnectToDebugserver(process_info); |
3231 | if (error.Fail()) { |
3232 | const char *error_string = error.AsCString(); |
3233 | if (error_string == nullptr) |
3234 | error_string = "unable to launch " DEBUGSERVER_BASENAME"debugserver"; |
Value stored to 'error_string' is never read | |
3235 | } |
3236 | return error; |
3237 | } |
3238 | #if !defined(_WIN32) |
3239 | #define USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 1 |
3240 | #endif |
3241 | |
3242 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
3243 | static bool SetCloexecFlag(int fd) { |
3244 | #if defined(FD_CLOEXEC1) |
3245 | int flags = ::fcntl(fd, F_GETFD1); |
3246 | if (flags == -1) |
3247 | return false; |
3248 | return (::fcntl(fd, F_SETFD2, flags | FD_CLOEXEC1) == 0); |
3249 | #else |
3250 | return false; |
3251 | #endif |
3252 | } |
3253 | #endif |
3254 | |
3255 | Status ProcessGDBRemote::LaunchAndConnectToDebugserver( |
3256 | const ProcessInfo &process_info) { |
3257 | using namespace std::placeholders; // For _1, _2, etc. |
3258 | |
3259 | Status error; |
3260 | if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID0) { |
3261 | // If we locate debugserver, keep that located version around |
3262 | static FileSpec g_debugserver_file_spec; |
3263 | |
3264 | ProcessLaunchInfo debugserver_launch_info; |
3265 | // Make debugserver run in its own session so signals generated by special |
3266 | // terminal key sequences (^C) don't affect debugserver. |
3267 | debugserver_launch_info.SetLaunchInSeparateProcessGroup(true); |
3268 | |
3269 | const std::weak_ptr<ProcessGDBRemote> this_wp = |
3270 | std::static_pointer_cast<ProcessGDBRemote>(shared_from_this()); |
3271 | debugserver_launch_info.SetMonitorProcessCallback( |
3272 | std::bind(MonitorDebugserverProcess, this_wp, _1, _2, _3)); |
3273 | debugserver_launch_info.SetUserID(process_info.GetUserID()); |
3274 | |
3275 | #if defined(__APPLE__) |
3276 | // On macOS 11, we need to support x86_64 applications translated to |
3277 | // arm64. We check whether a binary is translated and spawn the correct |
3278 | // debugserver accordingly. |
3279 | int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, |
3280 | static_cast<int>(process_info.GetProcessID()) }; |
3281 | struct kinfo_proc processInfo; |
3282 | size_t bufsize = sizeof(processInfo); |
3283 | if (sysctl(mib, (unsigned)(sizeof(mib)/sizeof(int)), &processInfo, |
3284 | &bufsize, NULL__null, 0) == 0 && bufsize > 0) { |
3285 | if (processInfo.kp_proc.p_flag & P_TRANSLATED) { |
3286 | FileSpec rosetta_debugserver("/Library/Apple/usr/libexec/oah/debugserver"); |
3287 | debugserver_launch_info.SetExecutableFile(rosetta_debugserver, false); |
3288 | } |
3289 | } |
3290 | #endif |
3291 | |
3292 | int communication_fd = -1; |
3293 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
3294 | // Use a socketpair on non-Windows systems for security and performance |
3295 | // reasons. |
3296 | int sockets[2]; /* the pair of socket descriptors */ |
3297 | if (socketpair(AF_UNIX1, SOCK_STREAMSOCK_STREAM, 0, sockets) == -1) { |
3298 | error.SetErrorToErrno(); |
3299 | return error; |
3300 | } |
3301 | |
3302 | int our_socket = sockets[0]; |
3303 | int gdb_socket = sockets[1]; |
3304 | auto cleanup_our = llvm::make_scope_exit([&]() { close(our_socket); }); |
3305 | auto cleanup_gdb = llvm::make_scope_exit([&]() { close(gdb_socket); }); |
3306 | |
3307 | // Don't let any child processes inherit our communication socket |
3308 | SetCloexecFlag(our_socket); |
3309 | communication_fd = gdb_socket; |
3310 | #endif |
3311 | |
3312 | error = m_gdb_comm.StartDebugserverProcess( |
3313 | nullptr, GetTarget().GetPlatform().get(), debugserver_launch_info, |
3314 | nullptr, nullptr, communication_fd); |
3315 | |
3316 | if (error.Success()) |
3317 | m_debugserver_pid = debugserver_launch_info.GetProcessID(); |
3318 | else |
3319 | m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
3320 | |
3321 | if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID0) { |
3322 | #ifdef USE_SOCKETPAIR_FOR_LOCAL_CONNECTION1 |
3323 | // Our process spawned correctly, we can now set our connection to use |
3324 | // our end of the socket pair |
3325 | cleanup_our.release(); |
3326 | m_gdb_comm.SetConnection( |
3327 | std::make_unique<ConnectionFileDescriptor>(our_socket, true)); |
3328 | #endif |
3329 | StartAsyncThread(); |
3330 | } |
3331 | |
3332 | if (error.Fail()) { |
3333 | Log *log = GetLog(GDBRLog::Process); |
3334 | |
3335 | LLDB_LOGF(log, "failed to start debugserver process: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to start debugserver process: %s" , error.AsCString()); } while (0) |
3336 | error.AsCString())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("failed to start debugserver process: %s" , error.AsCString()); } while (0); |
3337 | return error; |
3338 | } |
3339 | |
3340 | if (m_gdb_comm.IsConnected()) { |
3341 | // Finish the connection process by doing the handshake without |
3342 | // connecting (send NULL URL) |
3343 | error = ConnectToDebugserver(""); |
3344 | } else { |
3345 | error.SetErrorString("connection failed"); |
3346 | } |
3347 | } |
3348 | return error; |
3349 | } |
3350 | |
3351 | void ProcessGDBRemote::MonitorDebugserverProcess( |
3352 | std::weak_ptr<ProcessGDBRemote> process_wp, lldb::pid_t debugserver_pid, |
3353 | int signo, // Zero for no signal |
3354 | int exit_status // Exit value of process if signal is zero |
3355 | ) { |
3356 | // "debugserver_pid" argument passed in is the process ID for debugserver |
3357 | // that we are tracking... |
3358 | Log *log = GetLog(GDBRLog::Process); |
3359 | |
3360 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process_wp, pid=%" "l" "u" ", signo=%i (0x%x), exit_status=%i)", __FUNCTION__, debugserver_pid , signo, signo, exit_status); } while (0) |
3361 | "ProcessGDBRemote::%s(process_wp, pid=%" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process_wp, pid=%" "l" "u" ", signo=%i (0x%x), exit_status=%i)", __FUNCTION__, debugserver_pid , signo, signo, exit_status); } while (0) |
3362 | ", signo=%i (0x%x), exit_status=%i)",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process_wp, pid=%" "l" "u" ", signo=%i (0x%x), exit_status=%i)", __FUNCTION__, debugserver_pid , signo, signo, exit_status); } while (0) |
3363 | __FUNCTION__, debugserver_pid, signo, signo, exit_status)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process_wp, pid=%" "l" "u" ", signo=%i (0x%x), exit_status=%i)", __FUNCTION__, debugserver_pid , signo, signo, exit_status); } while (0); |
3364 | |
3365 | std::shared_ptr<ProcessGDBRemote> process_sp = process_wp.lock(); |
3366 | LLDB_LOGF(log, "ProcessGDBRemote::%s(process = %p)", __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process = %p)" , __FUNCTION__, static_cast<void *>(process_sp.get())); } while (0) |
3367 | static_cast<void *>(process_sp.get()))do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(process = %p)" , __FUNCTION__, static_cast<void *>(process_sp.get())); } while (0); |
3368 | if (!process_sp || process_sp->m_debugserver_pid != debugserver_pid) |
3369 | return; |
3370 | |
3371 | // Sleep for a half a second to make sure our inferior process has time to |
3372 | // set its exit status before we set it incorrectly when both the debugserver |
3373 | // and the inferior process shut down. |
3374 | std::this_thread::sleep_for(std::chrono::milliseconds(500)); |
3375 | |
3376 | // If our process hasn't yet exited, debugserver might have died. If the |
3377 | // process did exit, then we are reaping it. |
3378 | const StateType state = process_sp->GetState(); |
3379 | |
3380 | if (state != eStateInvalid && state != eStateUnloaded && |
3381 | state != eStateExited && state != eStateDetached) { |
3382 | char error_str[1024]; |
3383 | if (signo) { |
3384 | const char *signal_cstr = |
3385 | process_sp->GetUnixSignals()->GetSignalAsCString(signo); |
3386 | if (signal_cstr) |
3387 | ::snprintf(error_str, sizeof(error_str), |
3388 | DEBUGSERVER_BASENAME"debugserver" " died with signal %s", signal_cstr); |
3389 | else |
3390 | ::snprintf(error_str, sizeof(error_str), |
3391 | DEBUGSERVER_BASENAME"debugserver" " died with signal %i", signo); |
3392 | } else { |
3393 | ::snprintf(error_str, sizeof(error_str), |
3394 | DEBUGSERVER_BASENAME"debugserver" " died with an exit status of 0x%8.8x", |
3395 | exit_status); |
3396 | } |
3397 | |
3398 | process_sp->SetExitStatus(-1, error_str); |
3399 | } |
3400 | // Debugserver has exited we need to let our ProcessGDBRemote know that it no |
3401 | // longer has a debugserver instance |
3402 | process_sp->m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
3403 | } |
3404 | |
3405 | void ProcessGDBRemote::KillDebugserverProcess() { |
3406 | m_gdb_comm.Disconnect(); |
3407 | if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID0) { |
3408 | Host::Kill(m_debugserver_pid, SIGINT2); |
3409 | m_debugserver_pid = LLDB_INVALID_PROCESS_ID0; |
3410 | } |
3411 | } |
3412 | |
3413 | void ProcessGDBRemote::Initialize() { |
3414 | static llvm::once_flag g_once_flag; |
3415 | |
3416 | llvm::call_once(g_once_flag, []() { |
3417 | PluginManager::RegisterPlugin(GetPluginNameStatic(), |
3418 | GetPluginDescriptionStatic(), CreateInstance, |
3419 | DebuggerInitialize); |
3420 | }); |
3421 | } |
3422 | |
3423 | void ProcessGDBRemote::DebuggerInitialize(Debugger &debugger) { |
3424 | if (!PluginManager::GetSettingForProcessPlugin( |
3425 | debugger, PluginProperties::GetSettingName())) { |
3426 | const bool is_global_setting = true; |
3427 | PluginManager::CreateSettingForProcessPlugin( |
3428 | debugger, GetGlobalPluginProperties().GetValueProperties(), |
3429 | ConstString("Properties for the gdb-remote process plug-in."), |
3430 | is_global_setting); |
3431 | } |
3432 | } |
3433 | |
3434 | bool ProcessGDBRemote::StartAsyncThread() { |
3435 | Log *log = GetLog(GDBRLog::Process); |
3436 | |
3437 | LLDB_LOGF(log, "ProcessGDBRemote::%s ()", __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s ()", __FUNCTION__ ); } while (0); |
3438 | |
3439 | std::lock_guard<std::recursive_mutex> guard(m_async_thread_state_mutex); |
3440 | if (!m_async_thread.IsJoinable()) { |
3441 | // Create a thread that watches our internal state and controls which |
3442 | // events make it to clients (into the DCProcess event queue). |
3443 | |
3444 | llvm::Expected<HostThread> async_thread = |
3445 | ThreadLauncher::LaunchThread("<lldb.process.gdb-remote.async>", [this] { |
3446 | return ProcessGDBRemote::AsyncThread(); |
3447 | }); |
3448 | if (!async_thread) { |
3449 | LLDB_LOG_ERROR(GetLog(LLDBLog::Host), async_thread.takeError(),do { ::lldb_private::Log *log_private = (GetLog(LLDBLog::Host )); ::llvm::Error error_private = (async_thread.takeError()); if (log_private && error_private) { log_private-> FormatError(::std::move(error_private), "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "failed to launch host thread: {}"); } else ::llvm ::consumeError(::std::move(error_private)); } while (0) |
3450 | "failed to launch host thread: {}")do { ::lldb_private::Log *log_private = (GetLog(LLDBLog::Host )); ::llvm::Error error_private = (async_thread.takeError()); if (log_private && error_private) { log_private-> FormatError(::std::move(error_private), "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "failed to launch host thread: {}"); } else ::llvm ::consumeError(::std::move(error_private)); } while (0); |
3451 | return false; |
3452 | } |
3453 | m_async_thread = *async_thread; |
3454 | } else |
3455 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was " "already running.", __FUNCTION__); } while (0) |
3456 | "ProcessGDBRemote::%s () - Called when Async thread was "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was " "already running.", __FUNCTION__); } while (0) |
3457 | "already running.",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was " "already running.", __FUNCTION__); } while (0) |
3458 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was " "already running.", __FUNCTION__); } while (0); |
3459 | |
3460 | return m_async_thread.IsJoinable(); |
3461 | } |
3462 | |
3463 | void ProcessGDBRemote::StopAsyncThread() { |
3464 | Log *log = GetLog(GDBRLog::Process); |
3465 | |
3466 | LLDB_LOGF(log, "ProcessGDBRemote::%s ()", __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s ()", __FUNCTION__ ); } while (0); |
3467 | |
3468 | std::lock_guard<std::recursive_mutex> guard(m_async_thread_state_mutex); |
3469 | if (m_async_thread.IsJoinable()) { |
3470 | m_async_broadcaster.BroadcastEvent(eBroadcastBitAsyncThreadShouldExit); |
3471 | |
3472 | // This will shut down the async thread. |
3473 | m_gdb_comm.Disconnect(); // Disconnect from the debug server. |
3474 | |
3475 | // Stop the stdio thread |
3476 | m_async_thread.Join(nullptr); |
3477 | m_async_thread.Reset(); |
3478 | } else |
3479 | LLDB_LOGF(do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was not running." , __FUNCTION__); } while (0) |
3480 | log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was not running." , __FUNCTION__); } while (0) |
3481 | "ProcessGDBRemote::%s () - Called when Async thread was not running.",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was not running." , __FUNCTION__); } while (0) |
3482 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s () - Called when Async thread was not running." , __FUNCTION__); } while (0); |
3483 | } |
3484 | |
3485 | thread_result_t ProcessGDBRemote::AsyncThread() { |
3486 | Log *log = GetLog(GDBRLog::Process); |
3487 | LLDB_LOGF(log, "ProcessGDBRemote::%s(pid = %" PRIu64 ") thread starting...",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") thread starting...", __FUNCTION__, GetID()); } while (0) |
3488 | __FUNCTION__, GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") thread starting...", __FUNCTION__, GetID()); } while (0); |
3489 | |
3490 | EventSP event_sp; |
3491 | |
3492 | // We need to ignore any packets that come in after we have |
3493 | // have decided the process has exited. There are some |
3494 | // situations, for instance when we try to interrupt a running |
3495 | // process and the interrupt fails, where another packet might |
3496 | // get delivered after we've decided to give up on the process. |
3497 | // But once we've decided we are done with the process we will |
3498 | // not be in a state to do anything useful with new packets. |
3499 | // So it is safer to simply ignore any remaining packets by |
3500 | // explicitly checking for eStateExited before reentering the |
3501 | // fetch loop. |
3502 | |
3503 | bool done = false; |
3504 | while (!done && GetPrivateState() != eStateExited) { |
3505 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, GetID()); } while (0) |
3506 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, GetID()); } while (0) |
3507 | ") listener.WaitForEvent (NULL, event_sp)...",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, GetID()); } while (0) |
3508 | __FUNCTION__, GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, GetID()); } while (0); |
3509 | |
3510 | if (m_async_listener_sp->GetEvent(event_sp, llvm::None)) { |
3511 | const uint32_t event_type = event_sp->GetType(); |
3512 | if (event_sp->BroadcasterIs(&m_async_broadcaster)) { |
3513 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") Got an event of type: %d...", __FUNCTION__, GetID(), event_type ); } while (0) |
3514 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") Got an event of type: %d...", __FUNCTION__, GetID(), event_type ); } while (0) |
3515 | ") Got an event of type: %d...",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") Got an event of type: %d...", __FUNCTION__, GetID(), event_type ); } while (0) |
3516 | __FUNCTION__, GetID(), event_type)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") Got an event of type: %d...", __FUNCTION__, GetID(), event_type ); } while (0); |
3517 | |
3518 | switch (event_type) { |
3519 | case eBroadcastBitAsyncContinue: { |
3520 | const EventDataBytes *continue_packet = |
3521 | EventDataBytes::GetEventDataFromEvent(event_sp.get()); |
3522 | |
3523 | if (continue_packet) { |
3524 | const char *continue_cstr = |
3525 | (const char *)continue_packet->GetBytes(); |
3526 | const size_t continue_cstr_len = continue_packet->GetByteSize(); |
3527 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, GetID( ), continue_cstr); } while (0) |
3528 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, GetID( ), continue_cstr); } while (0) |
3529 | ") got eBroadcastBitAsyncContinue: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, GetID( ), continue_cstr); } while (0) |
3530 | __FUNCTION__, GetID(), continue_cstr)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, GetID( ), continue_cstr); } while (0); |
3531 | |
3532 | if (::strstr(continue_cstr, "vAttach") == nullptr) |
3533 | SetPrivateState(eStateRunning); |
3534 | StringExtractorGDBRemote response; |
3535 | |
3536 | StateType stop_state = |
3537 | GetGDBRemote().SendContinuePacketAndWaitForResponse( |
3538 | *this, *GetUnixSignals(), |
3539 | llvm::StringRef(continue_cstr, continue_cstr_len), |
3540 | GetInterruptTimeout(), response); |
3541 | |
3542 | // We need to immediately clear the thread ID list so we are sure |
3543 | // to get a valid list of threads. The thread ID list might be |
3544 | // contained within the "response", or the stop reply packet that |
3545 | // caused the stop. So clear it now before we give the stop reply |
3546 | // packet to the process using the |
3547 | // SetLastStopPacket()... |
3548 | ClearThreadIDList(); |
3549 | |
3550 | switch (stop_state) { |
3551 | case eStateStopped: |
3552 | case eStateCrashed: |
3553 | case eStateSuspended: |
3554 | SetLastStopPacket(response); |
3555 | SetPrivateState(stop_state); |
3556 | break; |
3557 | |
3558 | case eStateExited: { |
3559 | SetLastStopPacket(response); |
3560 | ClearThreadIDList(); |
3561 | response.SetFilePos(1); |
3562 | |
3563 | int exit_status = response.GetHexU8(); |
3564 | std::string desc_string; |
3565 | if (response.GetBytesLeft() > 0 && response.GetChar('-') == ';') { |
3566 | llvm::StringRef desc_str; |
3567 | llvm::StringRef desc_token; |
3568 | while (response.GetNameColonValue(desc_token, desc_str)) { |
3569 | if (desc_token != "description") |
3570 | continue; |
3571 | StringExtractor extractor(desc_str); |
3572 | extractor.GetHexByteString(desc_string); |
3573 | } |
3574 | } |
3575 | SetExitStatus(exit_status, desc_string.c_str()); |
3576 | done = true; |
3577 | break; |
3578 | } |
3579 | case eStateInvalid: { |
3580 | // Check to see if we were trying to attach and if we got back |
3581 | // the "E87" error code from debugserver -- this indicates that |
3582 | // the process is not debuggable. Return a slightly more |
3583 | // helpful error message about why the attach failed. |
3584 | if (::strstr(continue_cstr, "vAttach") != nullptr && |
3585 | response.GetError() == 0x87) { |
3586 | SetExitStatus(-1, "cannot attach to process due to " |
3587 | "System Integrity Protection"); |
3588 | } else if (::strstr(continue_cstr, "vAttach") != nullptr && |
3589 | response.GetStatus().Fail()) { |
3590 | SetExitStatus(-1, response.GetStatus().AsCString()); |
3591 | } else { |
3592 | SetExitStatus(-1, "lost connection"); |
3593 | } |
3594 | done = true; |
3595 | break; |
3596 | } |
3597 | |
3598 | default: |
3599 | SetPrivateState(stop_state); |
3600 | break; |
3601 | } // switch(stop_state) |
3602 | } // if (continue_packet) |
3603 | } // case eBroadcastBitAsyncContinue |
3604 | break; |
3605 | |
3606 | case eBroadcastBitAsyncThreadShouldExit: |
3607 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, GetID()); } while (0) |
3608 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, GetID()); } while (0) |
3609 | ") got eBroadcastBitAsyncThreadShouldExit...",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, GetID()); } while (0) |
3610 | __FUNCTION__, GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, GetID()); } while (0); |
3611 | done = true; |
3612 | break; |
3613 | |
3614 | default: |
3615 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3616 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3617 | ") got unknown event 0x%8.8x",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3618 | __FUNCTION__, GetID(), event_type)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0); |
3619 | done = true; |
3620 | break; |
3621 | } |
3622 | } else if (event_sp->BroadcasterIs(&m_gdb_comm)) { |
3623 | switch (event_type) { |
3624 | case Communication::eBroadcastBitReadThreadDidExit: |
3625 | SetExitStatus(-1, "lost connection"); |
3626 | done = true; |
3627 | break; |
3628 | |
3629 | default: |
3630 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3631 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3632 | ") got unknown event 0x%8.8x",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0) |
3633 | __FUNCTION__, GetID(), event_type)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") got unknown event 0x%8.8x", __FUNCTION__, GetID(), event_type ); } while (0); |
3634 | done = true; |
3635 | break; |
3636 | } |
3637 | } |
3638 | } else { |
3639 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__ , GetID()); } while (0) |
3640 | "ProcessGDBRemote::%s(pid = %" PRIu64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__ , GetID()); } while (0) |
3641 | ") listener.WaitForEvent (NULL, event_sp) => false",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__ , GetID()); } while (0) |
3642 | __FUNCTION__, GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__ , GetID()); } while (0); |
3643 | done = true; |
3644 | } |
3645 | } |
3646 | |
3647 | LLDB_LOGF(log, "ProcessGDBRemote::%s(pid = %" PRIu64 ") thread exiting...",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") thread exiting...", __FUNCTION__, GetID()); } while (0) |
3648 | __FUNCTION__, GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s(pid = %" "l" "u" ") thread exiting...", __FUNCTION__, GetID()); } while (0); |
3649 | |
3650 | return {}; |
3651 | } |
3652 | |
3653 | // uint32_t |
3654 | // ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList |
3655 | // &matches, std::vector<lldb::pid_t> &pids) |
3656 | //{ |
3657 | // // If we are planning to launch the debugserver remotely, then we need to |
3658 | // fire up a debugserver |
3659 | // // process and ask it for the list of processes. But if we are local, we |
3660 | // can let the Host do it. |
3661 | // if (m_local_debugserver) |
3662 | // { |
3663 | // return Host::ListProcessesMatchingName (name, matches, pids); |
3664 | // } |
3665 | // else |
3666 | // { |
3667 | // // FIXME: Implement talking to the remote debugserver. |
3668 | // return 0; |
3669 | // } |
3670 | // |
3671 | //} |
3672 | // |
3673 | bool ProcessGDBRemote::NewThreadNotifyBreakpointHit( |
3674 | void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id, |
3675 | lldb::user_id_t break_loc_id) { |
3676 | // I don't think I have to do anything here, just make sure I notice the new |
3677 | // thread when it starts to |
3678 | // run so I can stop it if that's what I want to do. |
3679 | Log *log = GetLog(LLDBLog::Step); |
3680 | LLDB_LOGF(log, "Hit New Thread Notification breakpoint.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Hit New Thread Notification breakpoint." ); } while (0); |
3681 | return false; |
3682 | } |
3683 | |
3684 | Status ProcessGDBRemote::UpdateAutomaticSignalFiltering() { |
3685 | Log *log = GetLog(GDBRLog::Process); |
3686 | LLDB_LOG(log, "Check if need to update ignored signals")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Check if need to update ignored signals"); } while (0); |
3687 | |
3688 | // QPassSignals package is not supported by the server, there is no way we |
3689 | // can ignore any signals on server side. |
3690 | if (!m_gdb_comm.GetQPassSignalsSupported()) |
3691 | return Status(); |
3692 | |
3693 | // No signals, nothing to send. |
3694 | if (m_unix_signals_sp == nullptr) |
3695 | return Status(); |
3696 | |
3697 | // Signals' version hasn't changed, no need to send anything. |
3698 | uint64_t new_signals_version = m_unix_signals_sp->GetVersion(); |
3699 | if (new_signals_version == m_last_signals_version) { |
3700 | LLDB_LOG(log, "Signals' version hasn't changed. version={0}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version hasn't changed. version={0}", m_last_signals_version ); } while (0) |
3701 | m_last_signals_version)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version hasn't changed. version={0}", m_last_signals_version ); } while (0); |
3702 | return Status(); |
3703 | } |
3704 | |
3705 | auto signals_to_ignore = |
3706 | m_unix_signals_sp->GetFilteredSignals(false, false, false); |
3707 | Status error = m_gdb_comm.SendSignalsToIgnore(signals_to_ignore); |
3708 | |
3709 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
3710 | "Signals' version changed. old version={0}, new version={1}, "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
3711 | "signals ignored={2}, update result={3}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
3712 | m_last_signals_version, new_signals_version,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0) |
3713 | signals_to_ignore.size(), error)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Signals' version changed. old version={0}, new version={1}, " "signals ignored={2}, update result={3}", m_last_signals_version , new_signals_version, signals_to_ignore.size(), error); } while (0); |
3714 | |
3715 | if (error.Success()) |
3716 | m_last_signals_version = new_signals_version; |
3717 | |
3718 | return error; |
3719 | } |
3720 | |
3721 | bool ProcessGDBRemote::StartNoticingNewThreads() { |
3722 | Log *log = GetLog(LLDBLog::Step); |
3723 | if (m_thread_create_bp_sp) { |
3724 | if (log && log->GetVerbose()) |
3725 | LLDB_LOGF(log, "Enabled noticing new thread breakpoint.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Enabled noticing new thread breakpoint." ); } while (0); |
3726 | m_thread_create_bp_sp->SetEnabled(true); |
3727 | } else { |
3728 | PlatformSP platform_sp(GetTarget().GetPlatform()); |
3729 | if (platform_sp) { |
3730 | m_thread_create_bp_sp = |
3731 | platform_sp->SetThreadCreationBreakpoint(GetTarget()); |
3732 | if (m_thread_create_bp_sp) { |
3733 | if (log && log->GetVerbose()) |
3734 | LLDB_LOGF(do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Successfully created new thread notification breakpoint %i" , m_thread_create_bp_sp->GetID()); } while (0) |
3735 | log, "Successfully created new thread notification breakpoint %i",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Successfully created new thread notification breakpoint %i" , m_thread_create_bp_sp->GetID()); } while (0) |
3736 | m_thread_create_bp_sp->GetID())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Successfully created new thread notification breakpoint %i" , m_thread_create_bp_sp->GetID()); } while (0); |
3737 | m_thread_create_bp_sp->SetCallback( |
3738 | ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); |
3739 | } else { |
3740 | LLDB_LOGF(log, "Failed to create new thread notification breakpoint.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Failed to create new thread notification breakpoint." ); } while (0); |
3741 | } |
3742 | } |
3743 | } |
3744 | return m_thread_create_bp_sp.get() != nullptr; |
3745 | } |
3746 | |
3747 | bool ProcessGDBRemote::StopNoticingNewThreads() { |
3748 | Log *log = GetLog(LLDBLog::Step); |
3749 | if (log && log->GetVerbose()) |
3750 | LLDB_LOGF(log, "Disabling new thread notification breakpoint.")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("Disabling new thread notification breakpoint." ); } while (0); |
3751 | |
3752 | if (m_thread_create_bp_sp) |
3753 | m_thread_create_bp_sp->SetEnabled(false); |
3754 | |
3755 | return true; |
3756 | } |
3757 | |
3758 | DynamicLoader *ProcessGDBRemote::GetDynamicLoader() { |
3759 | if (m_dyld_up.get() == nullptr) |
3760 | m_dyld_up.reset(DynamicLoader::FindPlugin(this, "")); |
3761 | return m_dyld_up.get(); |
3762 | } |
3763 | |
3764 | Status ProcessGDBRemote::SendEventData(const char *data) { |
3765 | int return_value; |
3766 | bool was_supported; |
3767 | |
3768 | Status error; |
3769 | |
3770 | return_value = m_gdb_comm.SendLaunchEventDataPacket(data, &was_supported); |
3771 | if (return_value != 0) { |
3772 | if (!was_supported) |
3773 | error.SetErrorString("Sending events is not supported for this process."); |
3774 | else |
3775 | error.SetErrorStringWithFormat("Error sending event data: %d.", |
3776 | return_value); |
3777 | } |
3778 | return error; |
3779 | } |
3780 | |
3781 | DataExtractor ProcessGDBRemote::GetAuxvData() { |
3782 | DataBufferSP buf; |
3783 | if (m_gdb_comm.GetQXferAuxvReadSupported()) { |
3784 | llvm::Expected<std::string> response = m_gdb_comm.ReadExtFeature("auxv", ""); |
3785 | if (response) |
3786 | buf = std::make_shared<DataBufferHeap>(response->c_str(), |
3787 | response->length()); |
3788 | else |
3789 | LLDB_LOG_ERROR(GetLog(GDBRLog::Process), response.takeError(), "{0}")do { ::lldb_private::Log *log_private = (GetLog(GDBRLog::Process )); ::llvm::Error error_private = (response.takeError()); if ( log_private && error_private) { log_private->FormatError (::std::move(error_private), "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "{0}"); } else ::llvm::consumeError(::std::move(error_private )); } while (0); |
3790 | } |
3791 | return DataExtractor(buf, GetByteOrder(), GetAddressByteSize()); |
3792 | } |
3793 | |
3794 | StructuredData::ObjectSP |
3795 | ProcessGDBRemote::GetExtendedInfoForThread(lldb::tid_t tid) { |
3796 | StructuredData::ObjectSP object_sp; |
3797 | |
3798 | if (m_gdb_comm.GetThreadExtendedInfoSupported()) { |
3799 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
3800 | SystemRuntime *runtime = GetSystemRuntime(); |
3801 | if (runtime) { |
3802 | runtime->AddThreadExtendedInfoPacketHints(args_dict); |
3803 | } |
3804 | args_dict->GetAsDictionary()->AddIntegerItem("thread", tid); |
3805 | |
3806 | StreamString packet; |
3807 | packet << "jThreadExtendedInfo:"; |
3808 | args_dict->Dump(packet, false); |
3809 | |
3810 | // FIXME the final character of a JSON dictionary, '}', is the escape |
3811 | // character in gdb-remote binary mode. lldb currently doesn't escape |
3812 | // these characters in its packet output -- so we add the quoted version of |
3813 | // the } character here manually in case we talk to a debugserver which un- |
3814 | // escapes the characters at packet read time. |
3815 | packet << (char)(0x7d ^ 0x20); |
3816 | |
3817 | StringExtractorGDBRemote response; |
3818 | response.SetResponseValidatorToJSON(); |
3819 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response) == |
3820 | GDBRemoteCommunication::PacketResult::Success) { |
3821 | StringExtractorGDBRemote::ResponseType response_type = |
3822 | response.GetResponseType(); |
3823 | if (response_type == StringExtractorGDBRemote::eResponse) { |
3824 | if (!response.Empty()) { |
3825 | object_sp = |
3826 | StructuredData::ParseJSON(std::string(response.GetStringRef())); |
3827 | } |
3828 | } |
3829 | } |
3830 | } |
3831 | return object_sp; |
3832 | } |
3833 | |
3834 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos( |
3835 | lldb::addr_t image_list_address, lldb::addr_t image_count) { |
3836 | |
3837 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
3838 | args_dict->GetAsDictionary()->AddIntegerItem("image_list_address", |
3839 | image_list_address); |
3840 | args_dict->GetAsDictionary()->AddIntegerItem("image_count", image_count); |
3841 | |
3842 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
3843 | } |
3844 | |
3845 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos() { |
3846 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
3847 | |
3848 | args_dict->GetAsDictionary()->AddBooleanItem("fetch_all_solibs", true); |
3849 | |
3850 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
3851 | } |
3852 | |
3853 | StructuredData::ObjectSP ProcessGDBRemote::GetLoadedDynamicLibrariesInfos( |
3854 | const std::vector<lldb::addr_t> &load_addresses) { |
3855 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
3856 | StructuredData::ArraySP addresses(new StructuredData::Array); |
3857 | |
3858 | for (auto addr : load_addresses) { |
3859 | StructuredData::ObjectSP addr_sp(new StructuredData::Integer(addr)); |
3860 | addresses->AddItem(addr_sp); |
3861 | } |
3862 | |
3863 | args_dict->GetAsDictionary()->AddItem("solib_addresses", addresses); |
3864 | |
3865 | return GetLoadedDynamicLibrariesInfos_sender(args_dict); |
3866 | } |
3867 | |
3868 | StructuredData::ObjectSP |
3869 | ProcessGDBRemote::GetLoadedDynamicLibrariesInfos_sender( |
3870 | StructuredData::ObjectSP args_dict) { |
3871 | StructuredData::ObjectSP object_sp; |
3872 | |
3873 | if (m_gdb_comm.GetLoadedDynamicLibrariesInfosSupported()) { |
3874 | // Scope for the scoped timeout object |
3875 | GDBRemoteCommunication::ScopedTimeout timeout(m_gdb_comm, |
3876 | std::chrono::seconds(10)); |
3877 | |
3878 | StreamString packet; |
3879 | packet << "jGetLoadedDynamicLibrariesInfos:"; |
3880 | args_dict->Dump(packet, false); |
3881 | |
3882 | // FIXME the final character of a JSON dictionary, '}', is the escape |
3883 | // character in gdb-remote binary mode. lldb currently doesn't escape |
3884 | // these characters in its packet output -- so we add the quoted version of |
3885 | // the } character here manually in case we talk to a debugserver which un- |
3886 | // escapes the characters at packet read time. |
3887 | packet << (char)(0x7d ^ 0x20); |
3888 | |
3889 | StringExtractorGDBRemote response; |
3890 | response.SetResponseValidatorToJSON(); |
3891 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response) == |
3892 | GDBRemoteCommunication::PacketResult::Success) { |
3893 | StringExtractorGDBRemote::ResponseType response_type = |
3894 | response.GetResponseType(); |
3895 | if (response_type == StringExtractorGDBRemote::eResponse) { |
3896 | if (!response.Empty()) { |
3897 | object_sp = |
3898 | StructuredData::ParseJSON(std::string(response.GetStringRef())); |
3899 | } |
3900 | } |
3901 | } |
3902 | } |
3903 | return object_sp; |
3904 | } |
3905 | |
3906 | StructuredData::ObjectSP ProcessGDBRemote::GetSharedCacheInfo() { |
3907 | StructuredData::ObjectSP object_sp; |
3908 | StructuredData::ObjectSP args_dict(new StructuredData::Dictionary()); |
3909 | |
3910 | if (m_gdb_comm.GetSharedCacheInfoSupported()) { |
3911 | StreamString packet; |
3912 | packet << "jGetSharedCacheInfo:"; |
3913 | args_dict->Dump(packet, false); |
3914 | |
3915 | // FIXME the final character of a JSON dictionary, '}', is the escape |
3916 | // character in gdb-remote binary mode. lldb currently doesn't escape |
3917 | // these characters in its packet output -- so we add the quoted version of |
3918 | // the } character here manually in case we talk to a debugserver which un- |
3919 | // escapes the characters at packet read time. |
3920 | packet << (char)(0x7d ^ 0x20); |
3921 | |
3922 | StringExtractorGDBRemote response; |
3923 | response.SetResponseValidatorToJSON(); |
3924 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response) == |
3925 | GDBRemoteCommunication::PacketResult::Success) { |
3926 | StringExtractorGDBRemote::ResponseType response_type = |
3927 | response.GetResponseType(); |
3928 | if (response_type == StringExtractorGDBRemote::eResponse) { |
3929 | if (!response.Empty()) { |
3930 | object_sp = |
3931 | StructuredData::ParseJSON(std::string(response.GetStringRef())); |
3932 | } |
3933 | } |
3934 | } |
3935 | } |
3936 | return object_sp; |
3937 | } |
3938 | |
3939 | Status ProcessGDBRemote::ConfigureStructuredData( |
3940 | ConstString type_name, const StructuredData::ObjectSP &config_sp) { |
3941 | return m_gdb_comm.ConfigureRemoteStructuredData(type_name, config_sp); |
3942 | } |
3943 | |
3944 | // Establish the largest memory read/write payloads we should use. If the |
3945 | // remote stub has a max packet size, stay under that size. |
3946 | // |
3947 | // If the remote stub's max packet size is crazy large, use a reasonable |
3948 | // largeish default. |
3949 | // |
3950 | // If the remote stub doesn't advertise a max packet size, use a conservative |
3951 | // default. |
3952 | |
3953 | void ProcessGDBRemote::GetMaxMemorySize() { |
3954 | const uint64_t reasonable_largeish_default = 128 * 1024; |
3955 | const uint64_t conservative_default = 512; |
3956 | |
3957 | if (m_max_memory_size == 0) { |
3958 | uint64_t stub_max_size = m_gdb_comm.GetRemoteMaxPacketSize(); |
3959 | if (stub_max_size != UINT64_MAX(18446744073709551615UL) && stub_max_size != 0) { |
3960 | // Save the stub's claimed maximum packet size |
3961 | m_remote_stub_max_memory_size = stub_max_size; |
3962 | |
3963 | // Even if the stub says it can support ginormous packets, don't exceed |
3964 | // our reasonable largeish default packet size. |
3965 | if (stub_max_size > reasonable_largeish_default) { |
3966 | stub_max_size = reasonable_largeish_default; |
3967 | } |
3968 | |
3969 | // Memory packet have other overheads too like Maddr,size:#NN Instead of |
3970 | // calculating the bytes taken by size and addr every time, we take a |
3971 | // maximum guess here. |
3972 | if (stub_max_size > 70) |
3973 | stub_max_size -= 32 + 32 + 6; |
3974 | else { |
3975 | // In unlikely scenario that max packet size is less then 70, we will |
3976 | // hope that data being written is small enough to fit. |
3977 | Log *log(GetLog(GDBRLog::Comm | GDBRLog::Memory)); |
3978 | if (log) |
3979 | log->Warning("Packet size is too small. " |
3980 | "LLDB may face problems while writing memory"); |
3981 | } |
3982 | |
3983 | m_max_memory_size = stub_max_size; |
3984 | } else { |
3985 | m_max_memory_size = conservative_default; |
3986 | } |
3987 | } |
3988 | } |
3989 | |
3990 | void ProcessGDBRemote::SetUserSpecifiedMaxMemoryTransferSize( |
3991 | uint64_t user_specified_max) { |
3992 | if (user_specified_max != 0) { |
3993 | GetMaxMemorySize(); |
3994 | |
3995 | if (m_remote_stub_max_memory_size != 0) { |
3996 | if (m_remote_stub_max_memory_size < user_specified_max) { |
3997 | m_max_memory_size = m_remote_stub_max_memory_size; // user specified a |
3998 | // packet size too |
3999 | // big, go as big |
4000 | // as the remote stub says we can go. |
4001 | } else { |
4002 | m_max_memory_size = user_specified_max; // user's packet size is good |
4003 | } |
4004 | } else { |
4005 | m_max_memory_size = |
4006 | user_specified_max; // user's packet size is probably fine |
4007 | } |
4008 | } |
4009 | } |
4010 | |
4011 | bool ProcessGDBRemote::GetModuleSpec(const FileSpec &module_file_spec, |
4012 | const ArchSpec &arch, |
4013 | ModuleSpec &module_spec) { |
4014 | Log *log = GetLog(LLDBLog::Platform); |
4015 | |
4016 | const ModuleCacheKey key(module_file_spec.GetPath(), |
4017 | arch.GetTriple().getTriple()); |
4018 | auto cached = m_cached_module_specs.find(key); |
4019 | if (cached != m_cached_module_specs.end()) { |
4020 | module_spec = cached->second; |
4021 | return bool(module_spec); |
4022 | } |
4023 | |
4024 | if (!m_gdb_comm.GetModuleInfo(module_file_spec, arch, module_spec)) { |
4025 | LLDB_LOGF(log, "ProcessGDBRemote::%s - failed to get module info for %s:%s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - failed to get module info for %s:%s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str()); } while (0) |
4026 | __FUNCTION__, module_file_spec.GetPath().c_str(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - failed to get module info for %s:%s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str()); } while (0) |
4027 | arch.GetTriple().getTriple().c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - failed to get module info for %s:%s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str()); } while (0); |
4028 | return false; |
4029 | } |
4030 | |
4031 | if (log) { |
4032 | StreamString stream; |
4033 | module_spec.Dump(stream); |
4034 | LLDB_LOGF(log, "ProcessGDBRemote::%s - got module info for (%s:%s) : %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - got module info for (%s:%s) : %s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str(), stream.GetData()); } while (0) |
4035 | __FUNCTION__, module_file_spec.GetPath().c_str(),do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - got module info for (%s:%s) : %s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str(), stream.GetData()); } while (0) |
4036 | arch.GetTriple().getTriple().c_str(), stream.GetData())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s - got module info for (%s:%s) : %s" , __FUNCTION__, module_file_spec.GetPath().c_str(), arch.GetTriple ().getTriple().c_str(), stream.GetData()); } while (0); |
4037 | } |
4038 | |
4039 | m_cached_module_specs[key] = module_spec; |
4040 | return true; |
4041 | } |
4042 | |
4043 | void ProcessGDBRemote::PrefetchModuleSpecs( |
4044 | llvm::ArrayRef<FileSpec> module_file_specs, const llvm::Triple &triple) { |
4045 | auto module_specs = m_gdb_comm.GetModulesInfo(module_file_specs, triple); |
4046 | if (module_specs) { |
4047 | for (const FileSpec &spec : module_file_specs) |
4048 | m_cached_module_specs[ModuleCacheKey(spec.GetPath(), |
4049 | triple.getTriple())] = ModuleSpec(); |
4050 | for (const ModuleSpec &spec : *module_specs) |
4051 | m_cached_module_specs[ModuleCacheKey(spec.GetFileSpec().GetPath(), |
4052 | triple.getTriple())] = spec; |
4053 | } |
4054 | } |
4055 | |
4056 | llvm::VersionTuple ProcessGDBRemote::GetHostOSVersion() { |
4057 | return m_gdb_comm.GetOSVersion(); |
4058 | } |
4059 | |
4060 | llvm::VersionTuple ProcessGDBRemote::GetHostMacCatalystVersion() { |
4061 | return m_gdb_comm.GetMacCatalystVersion(); |
4062 | } |
4063 | |
4064 | namespace { |
4065 | |
4066 | typedef std::vector<std::string> stringVec; |
4067 | |
4068 | typedef std::vector<struct GdbServerRegisterInfo> GDBServerRegisterVec; |
4069 | struct RegisterSetInfo { |
4070 | ConstString name; |
4071 | }; |
4072 | |
4073 | typedef std::map<uint32_t, RegisterSetInfo> RegisterSetMap; |
4074 | |
4075 | struct GdbServerTargetInfo { |
4076 | std::string arch; |
4077 | std::string osabi; |
4078 | stringVec includes; |
4079 | RegisterSetMap reg_set_map; |
4080 | }; |
4081 | |
4082 | bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info, |
4083 | std::vector<DynamicRegisterInfo::Register> ®isters) { |
4084 | if (!feature_node) |
4085 | return false; |
4086 | |
4087 | feature_node.ForEachChildElementWithName( |
4088 | "reg", [&target_info, ®isters](const XMLNode ®_node) -> bool { |
4089 | std::string gdb_group; |
4090 | std::string gdb_type; |
4091 | DynamicRegisterInfo::Register reg_info; |
4092 | bool encoding_set = false; |
4093 | bool format_set = false; |
4094 | |
4095 | // FIXME: we're silently ignoring invalid data here |
4096 | reg_node.ForEachAttribute([&target_info, &gdb_group, &gdb_type, |
4097 | &encoding_set, &format_set, ®_info]( |
4098 | const llvm::StringRef &name, |
4099 | const llvm::StringRef &value) -> bool { |
4100 | if (name == "name") { |
4101 | reg_info.name.SetString(value); |
4102 | } else if (name == "bitsize") { |
4103 | if (llvm::to_integer(value, reg_info.byte_size)) |
4104 | reg_info.byte_size = |
4105 | llvm::divideCeil(reg_info.byte_size, CHAR_BIT8); |
4106 | } else if (name == "type") { |
4107 | gdb_type = value.str(); |
4108 | } else if (name == "group") { |
4109 | gdb_group = value.str(); |
4110 | } else if (name == "regnum") { |
4111 | llvm::to_integer(value, reg_info.regnum_remote); |
4112 | } else if (name == "offset") { |
4113 | llvm::to_integer(value, reg_info.byte_offset); |
4114 | } else if (name == "altname") { |
4115 | reg_info.alt_name.SetString(value); |
4116 | } else if (name == "encoding") { |
4117 | encoding_set = true; |
4118 | reg_info.encoding = Args::StringToEncoding(value, eEncodingUint); |
4119 | } else if (name == "format") { |
4120 | format_set = true; |
4121 | if (!OptionArgParser::ToFormat(value.data(), reg_info.format, |
4122 | nullptr) |
4123 | .Success()) |
4124 | reg_info.format = |
4125 | llvm::StringSwitch<lldb::Format>(value) |
4126 | .Case("vector-sint8", eFormatVectorOfSInt8) |
4127 | .Case("vector-uint8", eFormatVectorOfUInt8) |
4128 | .Case("vector-sint16", eFormatVectorOfSInt16) |
4129 | .Case("vector-uint16", eFormatVectorOfUInt16) |
4130 | .Case("vector-sint32", eFormatVectorOfSInt32) |
4131 | .Case("vector-uint32", eFormatVectorOfUInt32) |
4132 | .Case("vector-float32", eFormatVectorOfFloat32) |
4133 | .Case("vector-uint64", eFormatVectorOfUInt64) |
4134 | .Case("vector-uint128", eFormatVectorOfUInt128) |
4135 | .Default(eFormatInvalid); |
4136 | } else if (name == "group_id") { |
4137 | uint32_t set_id = UINT32_MAX(4294967295U); |
4138 | llvm::to_integer(value, set_id); |
4139 | RegisterSetMap::const_iterator pos = |
4140 | target_info.reg_set_map.find(set_id); |
4141 | if (pos != target_info.reg_set_map.end()) |
4142 | reg_info.set_name = pos->second.name; |
4143 | } else if (name == "gcc_regnum" || name == "ehframe_regnum") { |
4144 | llvm::to_integer(value, reg_info.regnum_ehframe); |
4145 | } else if (name == "dwarf_regnum") { |
4146 | llvm::to_integer(value, reg_info.regnum_dwarf); |
4147 | } else if (name == "generic") { |
4148 | reg_info.regnum_generic = Args::StringToGenericRegister(value); |
4149 | } else if (name == "value_regnums") { |
4150 | SplitCommaSeparatedRegisterNumberString(value, reg_info.value_regs, |
4151 | 0); |
4152 | } else if (name == "invalidate_regnums") { |
4153 | SplitCommaSeparatedRegisterNumberString( |
4154 | value, reg_info.invalidate_regs, 0); |
4155 | } else { |
4156 | Log *log(GetLog(GDBRLog::Process)); |
4157 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s unhandled reg attribute %s = %s" , __FUNCTION__, name.data(), value.data()); } while (0) |
4158 | "ProcessGDBRemote::%s unhandled reg attribute %s = %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s unhandled reg attribute %s = %s" , __FUNCTION__, name.data(), value.data()); } while (0) |
4159 | __FUNCTION__, name.data(), value.data())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s unhandled reg attribute %s = %s" , __FUNCTION__, name.data(), value.data()); } while (0); |
4160 | } |
4161 | return true; // Keep iterating through all attributes |
4162 | }); |
4163 | |
4164 | if (!gdb_type.empty() && !(encoding_set || format_set)) { |
4165 | if (llvm::StringRef(gdb_type).startswith("int")) { |
4166 | reg_info.format = eFormatHex; |
4167 | reg_info.encoding = eEncodingUint; |
4168 | } else if (gdb_type == "data_ptr" || gdb_type == "code_ptr") { |
4169 | reg_info.format = eFormatAddressInfo; |
4170 | reg_info.encoding = eEncodingUint; |
4171 | } else if (gdb_type == "float") { |
4172 | reg_info.format = eFormatFloat; |
4173 | reg_info.encoding = eEncodingIEEE754; |
4174 | } else if (gdb_type == "aarch64v" || |
4175 | llvm::StringRef(gdb_type).startswith("vec") || |
4176 | gdb_type == "i387_ext" || gdb_type == "uint128") { |
4177 | // lldb doesn't handle 128-bit uints correctly (for ymm*h), so treat |
4178 | // them as vector (similarly to xmm/ymm) |
4179 | reg_info.format = eFormatVectorOfUInt8; |
4180 | reg_info.encoding = eEncodingVector; |
4181 | } |
4182 | } |
4183 | |
4184 | // Only update the register set name if we didn't get a "reg_set" |
4185 | // attribute. "set_name" will be empty if we didn't have a "reg_set" |
4186 | // attribute. |
4187 | if (!reg_info.set_name) { |
4188 | if (!gdb_group.empty()) { |
4189 | reg_info.set_name.SetCString(gdb_group.c_str()); |
4190 | } else { |
4191 | // If no register group name provided anywhere, |
4192 | // we'll create a 'general' register set |
4193 | reg_info.set_name.SetCString("general"); |
4194 | } |
4195 | } |
4196 | |
4197 | if (reg_info.byte_size == 0) { |
4198 | Log *log(GetLog(GDBRLog::Process)); |
4199 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s Skipping zero bitsize register %s" , __FUNCTION__, reg_info.name.AsCString()); } while (0) |
4200 | "ProcessGDBRemote::%s Skipping zero bitsize register %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s Skipping zero bitsize register %s" , __FUNCTION__, reg_info.name.AsCString()); } while (0) |
4201 | __FUNCTION__, reg_info.name.AsCString())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s Skipping zero bitsize register %s" , __FUNCTION__, reg_info.name.AsCString()); } while (0); |
4202 | } else |
4203 | registers.push_back(reg_info); |
4204 | |
4205 | return true; // Keep iterating through all "reg" elements |
4206 | }); |
4207 | return true; |
4208 | } |
4209 | |
4210 | } // namespace |
4211 | |
4212 | // This method fetches a register description feature xml file from |
4213 | // the remote stub and adds registers/register groupsets/architecture |
4214 | // information to the current process. It will call itself recursively |
4215 | // for nested register definition files. It returns true if it was able |
4216 | // to fetch and parse an xml file. |
4217 | bool ProcessGDBRemote::GetGDBServerRegisterInfoXMLAndProcess( |
4218 | ArchSpec &arch_to_use, std::string xml_filename, |
4219 | std::vector<DynamicRegisterInfo::Register> ®isters) { |
4220 | // request the target xml file |
4221 | llvm::Expected<std::string> raw = m_gdb_comm.ReadExtFeature("features", xml_filename); |
4222 | if (errorToBool(raw.takeError())) |
4223 | return false; |
4224 | |
4225 | XMLDocument xml_document; |
4226 | |
4227 | if (xml_document.ParseMemory(raw->c_str(), raw->size(), |
4228 | xml_filename.c_str())) { |
4229 | GdbServerTargetInfo target_info; |
4230 | std::vector<XMLNode> feature_nodes; |
4231 | |
4232 | // The top level feature XML file will start with a <target> tag. |
4233 | XMLNode target_node = xml_document.GetRootElement("target"); |
4234 | if (target_node) { |
4235 | target_node.ForEachChildElement([&target_info, &feature_nodes]( |
4236 | const XMLNode &node) -> bool { |
4237 | llvm::StringRef name = node.GetName(); |
4238 | if (name == "architecture") { |
4239 | node.GetElementText(target_info.arch); |
4240 | } else if (name == "osabi") { |
4241 | node.GetElementText(target_info.osabi); |
4242 | } else if (name == "xi:include" || name == "include") { |
4243 | std::string href = node.GetAttributeValue("href"); |
4244 | if (!href.empty()) |
4245 | target_info.includes.push_back(href); |
4246 | } else if (name == "feature") { |
4247 | feature_nodes.push_back(node); |
4248 | } else if (name == "groups") { |
4249 | node.ForEachChildElementWithName( |
4250 | "group", [&target_info](const XMLNode &node) -> bool { |
4251 | uint32_t set_id = UINT32_MAX(4294967295U); |
4252 | RegisterSetInfo set_info; |
4253 | |
4254 | node.ForEachAttribute( |
4255 | [&set_id, &set_info](const llvm::StringRef &name, |
4256 | const llvm::StringRef &value) -> bool { |
4257 | // FIXME: we're silently ignoring invalid data here |
4258 | if (name == "id") |
4259 | llvm::to_integer(value, set_id); |
4260 | if (name == "name") |
4261 | set_info.name = ConstString(value); |
4262 | return true; // Keep iterating through all attributes |
4263 | }); |
4264 | |
4265 | if (set_id != UINT32_MAX(4294967295U)) |
4266 | target_info.reg_set_map[set_id] = set_info; |
4267 | return true; // Keep iterating through all "group" elements |
4268 | }); |
4269 | } |
4270 | return true; // Keep iterating through all children of the target_node |
4271 | }); |
4272 | } else { |
4273 | // In an included XML feature file, we're already "inside" the <target> |
4274 | // tag of the initial XML file; this included file will likely only have |
4275 | // a <feature> tag. Need to check for any more included files in this |
4276 | // <feature> element. |
4277 | XMLNode feature_node = xml_document.GetRootElement("feature"); |
4278 | if (feature_node) { |
4279 | feature_nodes.push_back(feature_node); |
4280 | feature_node.ForEachChildElement([&target_info]( |
4281 | const XMLNode &node) -> bool { |
4282 | llvm::StringRef name = node.GetName(); |
4283 | if (name == "xi:include" || name == "include") { |
4284 | std::string href = node.GetAttributeValue("href"); |
4285 | if (!href.empty()) |
4286 | target_info.includes.push_back(href); |
4287 | } |
4288 | return true; |
4289 | }); |
4290 | } |
4291 | } |
4292 | |
4293 | // gdbserver does not implement the LLDB packets used to determine host |
4294 | // or process architecture. If that is the case, attempt to use |
4295 | // the <architecture/> field from target.xml, e.g.: |
4296 | // |
4297 | // <architecture>i386:x86-64</architecture> (seen from VMWare ESXi) |
4298 | // <architecture>arm</architecture> (seen from Segger JLink on unspecified |
4299 | // arm board) |
4300 | if (!arch_to_use.IsValid() && !target_info.arch.empty()) { |
4301 | // We don't have any information about vendor or OS. |
4302 | arch_to_use.SetTriple(llvm::StringSwitch<std::string>(target_info.arch) |
4303 | .Case("i386:x86-64", "x86_64") |
4304 | .Default(target_info.arch) + |
4305 | "--"); |
4306 | |
4307 | if (arch_to_use.IsValid()) |
4308 | GetTarget().MergeArchitecture(arch_to_use); |
4309 | } |
4310 | |
4311 | if (arch_to_use.IsValid()) { |
4312 | for (auto &feature_node : feature_nodes) { |
4313 | ParseRegisters(feature_node, target_info, |
4314 | registers); |
4315 | } |
4316 | |
4317 | for (const auto &include : target_info.includes) { |
4318 | GetGDBServerRegisterInfoXMLAndProcess(arch_to_use, include, |
4319 | registers); |
4320 | } |
4321 | } |
4322 | } else { |
4323 | return false; |
4324 | } |
4325 | return true; |
4326 | } |
4327 | |
4328 | void ProcessGDBRemote::AddRemoteRegisters( |
4329 | std::vector<DynamicRegisterInfo::Register> ®isters, |
4330 | const ArchSpec &arch_to_use) { |
4331 | std::map<uint32_t, uint32_t> remote_to_local_map; |
4332 | uint32_t remote_regnum = 0; |
4333 | for (auto it : llvm::enumerate(registers)) { |
4334 | DynamicRegisterInfo::Register &remote_reg_info = it.value(); |
4335 | |
4336 | // Assign successive remote regnums if missing. |
4337 | if (remote_reg_info.regnum_remote == LLDB_INVALID_REGNUM(4294967295U)) |
4338 | remote_reg_info.regnum_remote = remote_regnum; |
4339 | |
4340 | // Create a mapping from remote to local regnos. |
4341 | remote_to_local_map[remote_reg_info.regnum_remote] = it.index(); |
4342 | |
4343 | remote_regnum = remote_reg_info.regnum_remote + 1; |
4344 | } |
4345 | |
4346 | for (DynamicRegisterInfo::Register &remote_reg_info : registers) { |
4347 | auto proc_to_lldb = [&remote_to_local_map](uint32_t process_regnum) { |
4348 | auto lldb_regit = remote_to_local_map.find(process_regnum); |
4349 | return lldb_regit != remote_to_local_map.end() ? lldb_regit->second |
4350 | : LLDB_INVALID_REGNUM(4294967295U); |
4351 | }; |
4352 | |
4353 | llvm::transform(remote_reg_info.value_regs, |
4354 | remote_reg_info.value_regs.begin(), proc_to_lldb); |
4355 | llvm::transform(remote_reg_info.invalidate_regs, |
4356 | remote_reg_info.invalidate_regs.begin(), proc_to_lldb); |
4357 | } |
4358 | |
4359 | // Don't use Process::GetABI, this code gets called from DidAttach, and |
4360 | // in that context we haven't set the Target's architecture yet, so the |
4361 | // ABI is also potentially incorrect. |
4362 | if (ABISP abi_sp = ABI::FindPlugin(shared_from_this(), arch_to_use)) |
4363 | abi_sp->AugmentRegisterInfo(registers); |
4364 | |
4365 | m_register_info_sp->SetRegisterInfo(std::move(registers), arch_to_use); |
4366 | } |
4367 | |
4368 | // query the target of gdb-remote for extended target information returns |
4369 | // true on success (got register definitions), false on failure (did not). |
4370 | bool ProcessGDBRemote::GetGDBServerRegisterInfo(ArchSpec &arch_to_use) { |
4371 | // Make sure LLDB has an XML parser it can use first |
4372 | if (!XMLDocument::XMLEnabled()) |
4373 | return false; |
4374 | |
4375 | // check that we have extended feature read support |
4376 | if (!m_gdb_comm.GetQXferFeaturesReadSupported()) |
4377 | return false; |
4378 | |
4379 | std::vector<DynamicRegisterInfo::Register> registers; |
4380 | if (GetGDBServerRegisterInfoXMLAndProcess(arch_to_use, "target.xml", |
4381 | registers)) |
4382 | AddRemoteRegisters(registers, arch_to_use); |
4383 | |
4384 | return m_register_info_sp->GetNumRegisters() > 0; |
4385 | } |
4386 | |
4387 | llvm::Expected<LoadedModuleInfoList> ProcessGDBRemote::GetLoadedModuleList() { |
4388 | // Make sure LLDB has an XML parser it can use first |
4389 | if (!XMLDocument::XMLEnabled()) |
4390 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4391 | "XML parsing not available"); |
4392 | |
4393 | Log *log = GetLog(LLDBLog::Process); |
4394 | LLDB_LOGF(log, "ProcessGDBRemote::%s", __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s", __FUNCTION__ ); } while (0); |
4395 | |
4396 | LoadedModuleInfoList list; |
4397 | GDBRemoteCommunicationClient &comm = m_gdb_comm; |
4398 | bool can_use_svr4 = GetGlobalPluginProperties().GetUseSVR4(); |
4399 | |
4400 | // check that we have extended feature read support |
4401 | if (can_use_svr4 && comm.GetQXferLibrariesSVR4ReadSupported()) { |
4402 | // request the loaded library list |
4403 | llvm::Expected<std::string> raw = comm.ReadExtFeature("libraries-svr4", ""); |
4404 | if (!raw) |
4405 | return raw.takeError(); |
4406 | |
4407 | // parse the xml file in memory |
4408 | LLDB_LOGF(log, "parsing: %s", raw->c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("parsing: %s", raw->c_str()); } while (0); |
4409 | XMLDocument doc; |
4410 | |
4411 | if (!doc.ParseMemory(raw->c_str(), raw->size(), "noname.xml")) |
4412 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4413 | "Error reading noname.xml"); |
4414 | |
4415 | XMLNode root_element = doc.GetRootElement("library-list-svr4"); |
4416 | if (!root_element) |
4417 | return llvm::createStringError( |
4418 | llvm::inconvertibleErrorCode(), |
4419 | "Error finding library-list-svr4 xml element"); |
4420 | |
4421 | // main link map structure |
4422 | std::string main_lm = root_element.GetAttributeValue("main-lm"); |
4423 | // FIXME: we're silently ignoring invalid data here |
4424 | if (!main_lm.empty()) |
4425 | llvm::to_integer(main_lm, list.m_link_map); |
4426 | |
4427 | root_element.ForEachChildElementWithName( |
4428 | "library", [log, &list](const XMLNode &library) -> bool { |
4429 | LoadedModuleInfoList::LoadedModuleInfo module; |
4430 | |
4431 | // FIXME: we're silently ignoring invalid data here |
4432 | library.ForEachAttribute( |
4433 | [&module](const llvm::StringRef &name, |
4434 | const llvm::StringRef &value) -> bool { |
4435 | uint64_t uint_value = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
4436 | if (name == "name") |
4437 | module.set_name(value.str()); |
4438 | else if (name == "lm") { |
4439 | // the address of the link_map struct. |
4440 | llvm::to_integer(value, uint_value); |
4441 | module.set_link_map(uint_value); |
4442 | } else if (name == "l_addr") { |
4443 | // the displacement as read from the field 'l_addr' of the |
4444 | // link_map struct. |
4445 | llvm::to_integer(value, uint_value); |
4446 | module.set_base(uint_value); |
4447 | // base address is always a displacement, not an absolute |
4448 | // value. |
4449 | module.set_base_is_offset(true); |
4450 | } else if (name == "l_ld") { |
4451 | // the memory address of the libraries PT_DYNAMIC section. |
4452 | llvm::to_integer(value, uint_value); |
4453 | module.set_dynamic(uint_value); |
4454 | } |
4455 | |
4456 | return true; // Keep iterating over all properties of "library" |
4457 | }); |
4458 | |
4459 | if (log) { |
4460 | std::string name; |
4461 | lldb::addr_t lm = 0, base = 0, ld = 0; |
4462 | bool base_is_offset; |
4463 | |
4464 | module.get_name(name); |
4465 | module.get_link_map(lm); |
4466 | module.get_base(base); |
4467 | module.get_base_is_offset(base_is_offset); |
4468 | module.get_dynamic(ld); |
4469 | |
4470 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (link_map:0x%08" "l" "x" ", base:0x%08" "l" "x" "[%s], ld:0x%08" "l" "x" ", name:'%s')", lm, base, ( base_is_offset ? "offset" : "absolute"), ld, name.c_str()); } while (0) |
4471 | "found (link_map:0x%08" PRIx64 ", base:0x%08" PRIx64do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (link_map:0x%08" "l" "x" ", base:0x%08" "l" "x" "[%s], ld:0x%08" "l" "x" ", name:'%s')", lm, base, ( base_is_offset ? "offset" : "absolute"), ld, name.c_str()); } while (0) |
4472 | "[%s], ld:0x%08" PRIx64 ", name:'%s')",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (link_map:0x%08" "l" "x" ", base:0x%08" "l" "x" "[%s], ld:0x%08" "l" "x" ", name:'%s')", lm, base, ( base_is_offset ? "offset" : "absolute"), ld, name.c_str()); } while (0) |
4473 | lm, base, (base_is_offset ? "offset" : "absolute"), ld,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (link_map:0x%08" "l" "x" ", base:0x%08" "l" "x" "[%s], ld:0x%08" "l" "x" ", name:'%s')", lm, base, ( base_is_offset ? "offset" : "absolute"), ld, name.c_str()); } while (0) |
4474 | name.c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (link_map:0x%08" "l" "x" ", base:0x%08" "l" "x" "[%s], ld:0x%08" "l" "x" ", name:'%s')", lm, base, ( base_is_offset ? "offset" : "absolute"), ld, name.c_str()); } while (0); |
4475 | } |
4476 | |
4477 | list.add(module); |
4478 | return true; // Keep iterating over all "library" elements in the root |
4479 | // node |
4480 | }); |
4481 | |
4482 | if (log) |
4483 | LLDB_LOGF(log, "found %" PRId32 " modules in total",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found %" "d" " modules in total", ( int)list.m_list.size()); } while (0) |
4484 | (int)list.m_list.size())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found %" "d" " modules in total", ( int)list.m_list.size()); } while (0); |
4485 | return list; |
4486 | } else if (comm.GetQXferLibrariesReadSupported()) { |
4487 | // request the loaded library list |
4488 | llvm::Expected<std::string> raw = comm.ReadExtFeature("libraries", ""); |
4489 | |
4490 | if (!raw) |
4491 | return raw.takeError(); |
4492 | |
4493 | LLDB_LOGF(log, "parsing: %s", raw->c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("parsing: %s", raw->c_str()); } while (0); |
4494 | XMLDocument doc; |
4495 | |
4496 | if (!doc.ParseMemory(raw->c_str(), raw->size(), "noname.xml")) |
4497 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4498 | "Error reading noname.xml"); |
4499 | |
4500 | XMLNode root_element = doc.GetRootElement("library-list"); |
4501 | if (!root_element) |
4502 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4503 | "Error finding library-list xml element"); |
4504 | |
4505 | // FIXME: we're silently ignoring invalid data here |
4506 | root_element.ForEachChildElementWithName( |
4507 | "library", [log, &list](const XMLNode &library) -> bool { |
4508 | LoadedModuleInfoList::LoadedModuleInfo module; |
4509 | |
4510 | std::string name = library.GetAttributeValue("name"); |
4511 | module.set_name(name); |
4512 | |
4513 | // The base address of a given library will be the address of its |
4514 | // first section. Most remotes send only one section for Windows |
4515 | // targets for example. |
4516 | const XMLNode §ion = |
4517 | library.FindFirstChildElementWithName("section"); |
4518 | std::string address = section.GetAttributeValue("address"); |
4519 | uint64_t address_value = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
4520 | llvm::to_integer(address, address_value); |
4521 | module.set_base(address_value); |
4522 | // These addresses are absolute values. |
4523 | module.set_base_is_offset(false); |
4524 | |
4525 | if (log) { |
4526 | std::string name; |
4527 | lldb::addr_t base = 0; |
4528 | bool base_is_offset; |
4529 | module.get_name(name); |
4530 | module.get_base(base); |
4531 | module.get_base_is_offset(base_is_offset); |
4532 | |
4533 | LLDB_LOGF(log, "found (base:0x%08" PRIx64 "[%s], name:'%s')", base,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (base:0x%08" "l" "x" "[%s], name:'%s')" , base, (base_is_offset ? "offset" : "absolute"), name.c_str( )); } while (0) |
4534 | (base_is_offset ? "offset" : "absolute"), name.c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found (base:0x%08" "l" "x" "[%s], name:'%s')" , base, (base_is_offset ? "offset" : "absolute"), name.c_str( )); } while (0); |
4535 | } |
4536 | |
4537 | list.add(module); |
4538 | return true; // Keep iterating over all "library" elements in the root |
4539 | // node |
4540 | }); |
4541 | |
4542 | if (log) |
4543 | LLDB_LOGF(log, "found %" PRId32 " modules in total",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found %" "d" " modules in total", ( int)list.m_list.size()); } while (0) |
4544 | (int)list.m_list.size())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("found %" "d" " modules in total", ( int)list.m_list.size()); } while (0); |
4545 | return list; |
4546 | } else { |
4547 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4548 | "Remote libraries not supported"); |
4549 | } |
4550 | } |
4551 | |
4552 | lldb::ModuleSP ProcessGDBRemote::LoadModuleAtAddress(const FileSpec &file, |
4553 | lldb::addr_t link_map, |
4554 | lldb::addr_t base_addr, |
4555 | bool value_is_offset) { |
4556 | DynamicLoader *loader = GetDynamicLoader(); |
4557 | if (!loader) |
4558 | return nullptr; |
4559 | |
4560 | return loader->LoadModuleAtAddress(file, link_map, base_addr, |
4561 | value_is_offset); |
4562 | } |
4563 | |
4564 | llvm::Error ProcessGDBRemote::LoadModules() { |
4565 | using lldb_private::process_gdb_remote::ProcessGDBRemote; |
4566 | |
4567 | // request a list of loaded libraries from GDBServer |
4568 | llvm::Expected<LoadedModuleInfoList> module_list = GetLoadedModuleList(); |
4569 | if (!module_list) |
4570 | return module_list.takeError(); |
4571 | |
4572 | // get a list of all the modules |
4573 | ModuleList new_modules; |
4574 | |
4575 | for (LoadedModuleInfoList::LoadedModuleInfo &modInfo : module_list->m_list) { |
4576 | std::string mod_name; |
4577 | lldb::addr_t mod_base; |
4578 | lldb::addr_t link_map; |
4579 | bool mod_base_is_offset; |
4580 | |
4581 | bool valid = true; |
4582 | valid &= modInfo.get_name(mod_name); |
4583 | valid &= modInfo.get_base(mod_base); |
4584 | valid &= modInfo.get_base_is_offset(mod_base_is_offset); |
4585 | if (!valid) |
4586 | continue; |
4587 | |
4588 | if (!modInfo.get_link_map(link_map)) |
4589 | link_map = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
4590 | |
4591 | FileSpec file(mod_name); |
4592 | FileSystem::Instance().Resolve(file); |
4593 | lldb::ModuleSP module_sp = |
4594 | LoadModuleAtAddress(file, link_map, mod_base, mod_base_is_offset); |
4595 | |
4596 | if (module_sp.get()) |
4597 | new_modules.Append(module_sp); |
4598 | } |
4599 | |
4600 | if (new_modules.GetSize() > 0) { |
4601 | ModuleList removed_modules; |
4602 | Target &target = GetTarget(); |
4603 | ModuleList &loaded_modules = m_process->GetTarget().GetImages(); |
4604 | |
4605 | for (size_t i = 0; i < loaded_modules.GetSize(); ++i) { |
4606 | const lldb::ModuleSP loaded_module = loaded_modules.GetModuleAtIndex(i); |
4607 | |
4608 | bool found = false; |
4609 | for (size_t j = 0; j < new_modules.GetSize(); ++j) { |
4610 | if (new_modules.GetModuleAtIndex(j).get() == loaded_module.get()) |
4611 | found = true; |
4612 | } |
4613 | |
4614 | // The main executable will never be included in libraries-svr4, don't |
4615 | // remove it |
4616 | if (!found && |
4617 | loaded_module.get() != target.GetExecutableModulePointer()) { |
4618 | removed_modules.Append(loaded_module); |
4619 | } |
4620 | } |
4621 | |
4622 | loaded_modules.Remove(removed_modules); |
4623 | m_process->GetTarget().ModulesDidUnload(removed_modules, false); |
4624 | |
4625 | new_modules.ForEach([&target](const lldb::ModuleSP module_sp) -> bool { |
4626 | lldb_private::ObjectFile *obj = module_sp->GetObjectFile(); |
4627 | if (!obj) |
4628 | return true; |
4629 | |
4630 | if (obj->GetType() != ObjectFile::Type::eTypeExecutable) |
4631 | return true; |
4632 | |
4633 | lldb::ModuleSP module_copy_sp = module_sp; |
4634 | target.SetExecutableModule(module_copy_sp, eLoadDependentsNo); |
4635 | return false; |
4636 | }); |
4637 | |
4638 | loaded_modules.AppendIfNeeded(new_modules); |
4639 | m_process->GetTarget().ModulesDidLoad(new_modules); |
4640 | } |
4641 | |
4642 | return llvm::ErrorSuccess(); |
4643 | } |
4644 | |
4645 | Status ProcessGDBRemote::GetFileLoadAddress(const FileSpec &file, |
4646 | bool &is_loaded, |
4647 | lldb::addr_t &load_addr) { |
4648 | is_loaded = false; |
4649 | load_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
4650 | |
4651 | std::string file_path = file.GetPath(false); |
4652 | if (file_path.empty()) |
4653 | return Status("Empty file name specified"); |
4654 | |
4655 | StreamString packet; |
4656 | packet.PutCString("qFileLoadAddress:"); |
4657 | packet.PutStringAsRawHex8(file_path); |
4658 | |
4659 | StringExtractorGDBRemote response; |
4660 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response) != |
4661 | GDBRemoteCommunication::PacketResult::Success) |
4662 | return Status("Sending qFileLoadAddress packet failed"); |
4663 | |
4664 | if (response.IsErrorResponse()) { |
4665 | if (response.GetError() == 1) { |
4666 | // The file is not loaded into the inferior |
4667 | is_loaded = false; |
4668 | load_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
4669 | return Status(); |
4670 | } |
4671 | |
4672 | return Status( |
4673 | "Fetching file load address from remote server returned an error"); |
4674 | } |
4675 | |
4676 | if (response.IsNormalResponse()) { |
4677 | is_loaded = true; |
4678 | load_addr = response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
4679 | return Status(); |
4680 | } |
4681 | |
4682 | return Status( |
4683 | "Unknown error happened during sending the load address packet"); |
4684 | } |
4685 | |
4686 | void ProcessGDBRemote::ModulesDidLoad(ModuleList &module_list) { |
4687 | // We must call the lldb_private::Process::ModulesDidLoad () first before we |
4688 | // do anything |
4689 | Process::ModulesDidLoad(module_list); |
4690 | |
4691 | // After loading shared libraries, we can ask our remote GDB server if it |
4692 | // needs any symbols. |
4693 | m_gdb_comm.ServeSymbolLookups(this); |
4694 | } |
4695 | |
4696 | void ProcessGDBRemote::HandleAsyncStdout(llvm::StringRef out) { |
4697 | AppendSTDOUT(out.data(), out.size()); |
4698 | } |
4699 | |
4700 | static const char *end_delimiter = "--end--;"; |
4701 | static const int end_delimiter_len = 8; |
4702 | |
4703 | void ProcessGDBRemote::HandleAsyncMisc(llvm::StringRef data) { |
4704 | std::string input = data.str(); // '1' to move beyond 'A' |
4705 | if (m_partial_profile_data.length() > 0) { |
4706 | m_partial_profile_data.append(input); |
4707 | input = m_partial_profile_data; |
4708 | m_partial_profile_data.clear(); |
4709 | } |
4710 | |
4711 | size_t found, pos = 0, len = input.length(); |
4712 | while ((found = input.find(end_delimiter, pos)) != std::string::npos) { |
4713 | StringExtractorGDBRemote profileDataExtractor( |
4714 | input.substr(pos, found).c_str()); |
4715 | std::string profile_data = |
4716 | HarmonizeThreadIdsForProfileData(profileDataExtractor); |
4717 | BroadcastAsyncProfileData(profile_data); |
4718 | |
4719 | pos = found + end_delimiter_len; |
4720 | } |
4721 | |
4722 | if (pos < len) { |
4723 | // Last incomplete chunk. |
4724 | m_partial_profile_data = input.substr(pos); |
4725 | } |
4726 | } |
4727 | |
4728 | std::string ProcessGDBRemote::HarmonizeThreadIdsForProfileData( |
4729 | StringExtractorGDBRemote &profileDataExtractor) { |
4730 | std::map<uint64_t, uint32_t> new_thread_id_to_used_usec_map; |
4731 | std::string output; |
4732 | llvm::raw_string_ostream output_stream(output); |
4733 | llvm::StringRef name, value; |
4734 | |
4735 | // Going to assuming thread_used_usec comes first, else bail out. |
4736 | while (profileDataExtractor.GetNameColonValue(name, value)) { |
4737 | if (name.compare("thread_used_id") == 0) { |
4738 | StringExtractor threadIDHexExtractor(value); |
4739 | uint64_t thread_id = threadIDHexExtractor.GetHexMaxU64(false, 0); |
4740 | |
4741 | bool has_used_usec = false; |
4742 | uint32_t curr_used_usec = 0; |
4743 | llvm::StringRef usec_name, usec_value; |
4744 | uint32_t input_file_pos = profileDataExtractor.GetFilePos(); |
4745 | if (profileDataExtractor.GetNameColonValue(usec_name, usec_value)) { |
4746 | if (usec_name.equals("thread_used_usec")) { |
4747 | has_used_usec = true; |
4748 | usec_value.getAsInteger(0, curr_used_usec); |
4749 | } else { |
4750 | // We didn't find what we want, it is probably an older version. Bail |
4751 | // out. |
4752 | profileDataExtractor.SetFilePos(input_file_pos); |
4753 | } |
4754 | } |
4755 | |
4756 | if (has_used_usec) { |
4757 | uint32_t prev_used_usec = 0; |
4758 | std::map<uint64_t, uint32_t>::iterator iterator = |
4759 | m_thread_id_to_used_usec_map.find(thread_id); |
4760 | if (iterator != m_thread_id_to_used_usec_map.end()) { |
4761 | prev_used_usec = m_thread_id_to_used_usec_map[thread_id]; |
4762 | } |
4763 | |
4764 | uint32_t real_used_usec = curr_used_usec - prev_used_usec; |
4765 | // A good first time record is one that runs for at least 0.25 sec |
4766 | bool good_first_time = |
4767 | (prev_used_usec == 0) && (real_used_usec > 250000); |
4768 | bool good_subsequent_time = |
4769 | (prev_used_usec > 0) && |
4770 | ((real_used_usec > 0) || (HasAssignedIndexIDToThread(thread_id))); |
4771 | |
4772 | if (good_first_time || good_subsequent_time) { |
4773 | // We try to avoid doing too many index id reservation, resulting in |
4774 | // fast increase of index ids. |
4775 | |
4776 | output_stream << name << ":"; |
4777 | int32_t index_id = AssignIndexIDToThread(thread_id); |
4778 | output_stream << index_id << ";"; |
4779 | |
4780 | output_stream << usec_name << ":" << usec_value << ";"; |
4781 | } else { |
4782 | // Skip past 'thread_used_name'. |
4783 | llvm::StringRef local_name, local_value; |
4784 | profileDataExtractor.GetNameColonValue(local_name, local_value); |
4785 | } |
4786 | |
4787 | // Store current time as previous time so that they can be compared |
4788 | // later. |
4789 | new_thread_id_to_used_usec_map[thread_id] = curr_used_usec; |
4790 | } else { |
4791 | // Bail out and use old string. |
4792 | output_stream << name << ":" << value << ";"; |
4793 | } |
4794 | } else { |
4795 | output_stream << name << ":" << value << ";"; |
4796 | } |
4797 | } |
4798 | output_stream << end_delimiter; |
4799 | m_thread_id_to_used_usec_map = new_thread_id_to_used_usec_map; |
4800 | |
4801 | return output_stream.str(); |
4802 | } |
4803 | |
4804 | void ProcessGDBRemote::HandleStopReply() { |
4805 | if (GetStopID() != 0) |
4806 | return; |
4807 | |
4808 | if (GetID() == LLDB_INVALID_PROCESS_ID0) { |
4809 | lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID(); |
4810 | if (pid != LLDB_INVALID_PROCESS_ID0) |
4811 | SetID(pid); |
4812 | } |
4813 | BuildDynamicRegisterInfo(true); |
4814 | } |
4815 | |
4816 | llvm::Expected<bool> ProcessGDBRemote::SaveCore(llvm::StringRef outfile) { |
4817 | if (!m_gdb_comm.GetSaveCoreSupported()) |
4818 | return false; |
4819 | |
4820 | StreamString packet; |
4821 | packet.PutCString("qSaveCore;path-hint:"); |
4822 | packet.PutStringAsRawHex8(outfile); |
4823 | |
4824 | StringExtractorGDBRemote response; |
4825 | if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString(), response) == |
4826 | GDBRemoteCommunication::PacketResult::Success) { |
4827 | // TODO: grab error message from the packet? StringExtractor seems to |
4828 | // be missing a method for that |
4829 | if (response.IsErrorResponse()) |
4830 | return llvm::createStringError( |
4831 | llvm::inconvertibleErrorCode(), |
4832 | llvm::formatv("qSaveCore returned an error")); |
4833 | |
4834 | std::string path; |
4835 | |
4836 | // process the response |
4837 | for (auto x : llvm::split(response.GetStringRef(), ';')) { |
4838 | if (x.consume_front("core-path:")) |
4839 | StringExtractor(x).GetHexByteString(path); |
4840 | } |
4841 | |
4842 | // verify that we've gotten what we need |
4843 | if (path.empty()) |
4844 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4845 | "qSaveCore returned no core path"); |
4846 | |
4847 | // now transfer the core file |
4848 | FileSpec remote_core{llvm::StringRef(path)}; |
4849 | Platform &platform = *GetTarget().GetPlatform(); |
4850 | Status error = platform.GetFile(remote_core, FileSpec(outfile)); |
4851 | |
4852 | if (platform.IsRemote()) { |
4853 | // NB: we unlink the file on error too |
4854 | platform.Unlink(remote_core); |
4855 | if (error.Fail()) |
4856 | return error.ToError(); |
4857 | } |
4858 | |
4859 | return true; |
4860 | } |
4861 | |
4862 | return llvm::createStringError(llvm::inconvertibleErrorCode(), |
4863 | "Unable to send qSaveCore"); |
4864 | } |
4865 | |
4866 | static const char *const s_async_json_packet_prefix = "JSON-async:"; |
4867 | |
4868 | static StructuredData::ObjectSP |
4869 | ParseStructuredDataPacket(llvm::StringRef packet) { |
4870 | Log *log = GetLog(GDBRLog::Process); |
4871 | |
4872 | if (!packet.consume_front(s_async_json_packet_prefix)) { |
4873 | if (log) { |
4874 | LLDB_LOGF(do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4875 | log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4876 | "GDBRemoteCommunicationClientBase::%s() received $J packet "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4877 | "but was not a StructuredData packet: packet starts with "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4878 | "%s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4879 | __FUNCTION__,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0) |
4880 | packet.slice(0, strlen(s_async_json_packet_prefix)).str().c_str())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("GDBRemoteCommunicationClientBase::%s() received $J packet " "but was not a StructuredData packet: packet starts with " "%s" , __FUNCTION__, packet.slice(0, strlen(s_async_json_packet_prefix )).str().c_str()); } while (0); |
4881 | } |
4882 | return StructuredData::ObjectSP(); |
4883 | } |
4884 | |
4885 | // This is an asynchronous JSON packet, destined for a StructuredDataPlugin. |
4886 | StructuredData::ObjectSP json_sp = |
4887 | StructuredData::ParseJSON(std::string(packet)); |
4888 | if (log) { |
4889 | if (json_sp) { |
4890 | StreamString json_str; |
4891 | json_sp->Dump(json_str, true); |
4892 | json_str.Flush(); |
4893 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s() " "received Async StructuredData packet: %s" , __FUNCTION__, json_str.GetData()); } while (0) |
4894 | "ProcessGDBRemote::%s() "do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s() " "received Async StructuredData packet: %s" , __FUNCTION__, json_str.GetData()); } while (0) |
4895 | "received Async StructuredData packet: %s",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s() " "received Async StructuredData packet: %s" , __FUNCTION__, json_str.GetData()); } while (0) |
4896 | __FUNCTION__, json_str.GetData())do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s() " "received Async StructuredData packet: %s" , __FUNCTION__, json_str.GetData()); } while (0); |
4897 | } else { |
4898 | LLDB_LOGF(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s" "() received StructuredData packet:" " parse failure", __FUNCTION__); } while (0) |
4899 | "ProcessGDBRemote::%s"do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s" "() received StructuredData packet:" " parse failure", __FUNCTION__); } while (0) |
4900 | "() received StructuredData packet:"do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s" "() received StructuredData packet:" " parse failure", __FUNCTION__); } while (0) |
4901 | " parse failure",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s" "() received StructuredData packet:" " parse failure", __FUNCTION__); } while (0) |
4902 | __FUNCTION__)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("ProcessGDBRemote::%s" "() received StructuredData packet:" " parse failure", __FUNCTION__); } while (0); |
4903 | } |
4904 | } |
4905 | return json_sp; |
4906 | } |
4907 | |
4908 | void ProcessGDBRemote::HandleAsyncStructuredDataPacket(llvm::StringRef data) { |
4909 | auto structured_data_sp = ParseStructuredDataPacket(data); |
4910 | if (structured_data_sp) |
4911 | RouteAsyncStructuredData(structured_data_sp); |
4912 | } |
4913 | |
4914 | class CommandObjectProcessGDBRemoteSpeedTest : public CommandObjectParsed { |
4915 | public: |
4916 | CommandObjectProcessGDBRemoteSpeedTest(CommandInterpreter &interpreter) |
4917 | : CommandObjectParsed(interpreter, "process plugin packet speed-test", |
4918 | "Tests packet speeds of various sizes to determine " |
4919 | "the performance characteristics of the GDB remote " |
4920 | "connection. ", |
4921 | nullptr), |
4922 | m_option_group(), |
4923 | m_num_packets(LLDB_OPT_SET_1(1U << 0), false, "count", 'c', 0, eArgTypeCount, |
4924 | "The number of packets to send of each varying size " |
4925 | "(default is 1000).", |
4926 | 1000), |
4927 | m_max_send(LLDB_OPT_SET_1(1U << 0), false, "max-send", 's', 0, eArgTypeCount, |
4928 | "The maximum number of bytes to send in a packet. Sizes " |
4929 | "increase in powers of 2 while the size is less than or " |
4930 | "equal to this option value. (default 1024).", |
4931 | 1024), |
4932 | m_max_recv(LLDB_OPT_SET_1(1U << 0), false, "max-receive", 'r', 0, eArgTypeCount, |
4933 | "The maximum number of bytes to receive in a packet. Sizes " |
4934 | "increase in powers of 2 while the size is less than or " |
4935 | "equal to this option value. (default 1024).", |
4936 | 1024), |
4937 | m_json(LLDB_OPT_SET_1(1U << 0), false, "json", 'j', |
4938 | "Print the output as JSON data for easy parsing.", false, true) { |
4939 | m_option_group.Append(&m_num_packets, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
4940 | m_option_group.Append(&m_max_send, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
4941 | m_option_group.Append(&m_max_recv, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
4942 | m_option_group.Append(&m_json, LLDB_OPT_SET_ALL0xFFFFFFFFU, LLDB_OPT_SET_1(1U << 0)); |
4943 | m_option_group.Finalize(); |
4944 | } |
4945 | |
4946 | ~CommandObjectProcessGDBRemoteSpeedTest() override = default; |
4947 | |
4948 | Options *GetOptions() override { return &m_option_group; } |
4949 | |
4950 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
4951 | const size_t argc = command.GetArgumentCount(); |
4952 | if (argc == 0) { |
4953 | ProcessGDBRemote *process = |
4954 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext() |
4955 | .GetProcessPtr(); |
4956 | if (process) { |
4957 | StreamSP output_stream_sp( |
4958 | m_interpreter.GetDebugger().GetAsyncOutputStream()); |
4959 | result.SetImmediateOutputStream(output_stream_sp); |
4960 | |
4961 | const uint32_t num_packets = |
4962 | (uint32_t)m_num_packets.GetOptionValue().GetCurrentValue(); |
4963 | const uint64_t max_send = m_max_send.GetOptionValue().GetCurrentValue(); |
4964 | const uint64_t max_recv = m_max_recv.GetOptionValue().GetCurrentValue(); |
4965 | const bool json = m_json.GetOptionValue().GetCurrentValue(); |
4966 | const uint64_t k_recv_amount = |
4967 | 4 * 1024 * 1024; // Receive amount in bytes |
4968 | process->GetGDBRemote().TestPacketSpeed( |
4969 | num_packets, max_send, max_recv, k_recv_amount, json, |
4970 | output_stream_sp ? *output_stream_sp : result.GetOutputStream()); |
4971 | result.SetStatus(eReturnStatusSuccessFinishResult); |
4972 | return true; |
4973 | } |
4974 | } else { |
4975 | result.AppendErrorWithFormat("'%s' takes no arguments", |
4976 | m_cmd_name.c_str()); |
4977 | } |
4978 | result.SetStatus(eReturnStatusFailed); |
4979 | return false; |
4980 | } |
4981 | |
4982 | protected: |
4983 | OptionGroupOptions m_option_group; |
4984 | OptionGroupUInt64 m_num_packets; |
4985 | OptionGroupUInt64 m_max_send; |
4986 | OptionGroupUInt64 m_max_recv; |
4987 | OptionGroupBoolean m_json; |
4988 | }; |
4989 | |
4990 | class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed { |
4991 | private: |
4992 | public: |
4993 | CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) |
4994 | : CommandObjectParsed(interpreter, "process plugin packet history", |
4995 | "Dumps the packet history buffer. ", nullptr) {} |
4996 | |
4997 | ~CommandObjectProcessGDBRemotePacketHistory() override = default; |
4998 | |
4999 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
5000 | const size_t argc = command.GetArgumentCount(); |
5001 | if (argc == 0) { |
5002 | ProcessGDBRemote *process = |
5003 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext() |
5004 | .GetProcessPtr(); |
5005 | if (process) { |
5006 | process->GetGDBRemote().DumpHistory(result.GetOutputStream()); |
5007 | result.SetStatus(eReturnStatusSuccessFinishResult); |
5008 | return true; |
5009 | } |
5010 | } else { |
5011 | result.AppendErrorWithFormat("'%s' takes no arguments", |
5012 | m_cmd_name.c_str()); |
5013 | } |
5014 | result.SetStatus(eReturnStatusFailed); |
5015 | return false; |
5016 | } |
5017 | }; |
5018 | |
5019 | class CommandObjectProcessGDBRemotePacketXferSize : public CommandObjectParsed { |
5020 | private: |
5021 | public: |
5022 | CommandObjectProcessGDBRemotePacketXferSize(CommandInterpreter &interpreter) |
5023 | : CommandObjectParsed( |
5024 | interpreter, "process plugin packet xfer-size", |
5025 | "Maximum size that lldb will try to read/write one one chunk.", |
5026 | nullptr) {} |
5027 | |
5028 | ~CommandObjectProcessGDBRemotePacketXferSize() override = default; |
5029 | |
5030 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
5031 | const size_t argc = command.GetArgumentCount(); |
5032 | if (argc == 0) { |
5033 | result.AppendErrorWithFormat("'%s' takes an argument to specify the max " |
5034 | "amount to be transferred when " |
5035 | "reading/writing", |
5036 | m_cmd_name.c_str()); |
5037 | return false; |
5038 | } |
5039 | |
5040 | ProcessGDBRemote *process = |
5041 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
5042 | if (process) { |
5043 | const char *packet_size = command.GetArgumentAtIndex(0); |
5044 | errno(*__errno_location ()) = 0; |
5045 | uint64_t user_specified_max = strtoul(packet_size, nullptr, 10); |
5046 | if (errno(*__errno_location ()) == 0 && user_specified_max != 0) { |
5047 | process->SetUserSpecifiedMaxMemoryTransferSize(user_specified_max); |
5048 | result.SetStatus(eReturnStatusSuccessFinishResult); |
5049 | return true; |
5050 | } |
5051 | } |
5052 | result.SetStatus(eReturnStatusFailed); |
5053 | return false; |
5054 | } |
5055 | }; |
5056 | |
5057 | class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed { |
5058 | private: |
5059 | public: |
5060 | CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) |
5061 | : CommandObjectParsed(interpreter, "process plugin packet send", |
5062 | "Send a custom packet through the GDB remote " |
5063 | "protocol and print the answer. " |
5064 | "The packet header and footer will automatically " |
5065 | "be added to the packet prior to sending and " |
5066 | "stripped from the result.", |
5067 | nullptr) {} |
5068 | |
5069 | ~CommandObjectProcessGDBRemotePacketSend() override = default; |
5070 | |
5071 | bool DoExecute(Args &command, CommandReturnObject &result) override { |
5072 | const size_t argc = command.GetArgumentCount(); |
5073 | if (argc == 0) { |
5074 | result.AppendErrorWithFormat( |
5075 | "'%s' takes a one or more packet content arguments", |
5076 | m_cmd_name.c_str()); |
5077 | return false; |
5078 | } |
5079 | |
5080 | ProcessGDBRemote *process = |
5081 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
5082 | if (process) { |
5083 | for (size_t i = 0; i < argc; ++i) { |
5084 | const char *packet_cstr = command.GetArgumentAtIndex(0); |
5085 | StringExtractorGDBRemote response; |
5086 | process->GetGDBRemote().SendPacketAndWaitForResponse( |
5087 | packet_cstr, response, process->GetInterruptTimeout()); |
5088 | result.SetStatus(eReturnStatusSuccessFinishResult); |
5089 | Stream &output_strm = result.GetOutputStream(); |
5090 | output_strm.Printf(" packet: %s\n", packet_cstr); |
5091 | std::string response_str = std::string(response.GetStringRef()); |
5092 | |
5093 | if (strstr(packet_cstr, "qGetProfileData") != nullptr) { |
5094 | response_str = process->HarmonizeThreadIdsForProfileData(response); |
5095 | } |
5096 | |
5097 | if (response_str.empty()) |
5098 | output_strm.PutCString("response: \nerror: UNIMPLEMENTED\n"); |
5099 | else |
5100 | output_strm.Printf("response: %s\n", response.GetStringRef().data()); |
5101 | } |
5102 | } |
5103 | return true; |
5104 | } |
5105 | }; |
5106 | |
5107 | class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw { |
5108 | private: |
5109 | public: |
5110 | CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) |
5111 | : CommandObjectRaw(interpreter, "process plugin packet monitor", |
5112 | "Send a qRcmd packet through the GDB remote protocol " |
5113 | "and print the response." |
5114 | "The argument passed to this command will be hex " |
5115 | "encoded into a valid 'qRcmd' packet, sent and the " |
5116 | "response will be printed.") {} |
5117 | |
5118 | ~CommandObjectProcessGDBRemotePacketMonitor() override = default; |
5119 | |
5120 | bool DoExecute(llvm::StringRef command, |
5121 | CommandReturnObject &result) override { |
5122 | if (command.empty()) { |
5123 | result.AppendErrorWithFormat("'%s' takes a command string argument", |
5124 | m_cmd_name.c_str()); |
5125 | return false; |
5126 | } |
5127 | |
5128 | ProcessGDBRemote *process = |
5129 | (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); |
5130 | if (process) { |
5131 | StreamString packet; |
5132 | packet.PutCString("qRcmd,"); |
5133 | packet.PutBytesAsRawHex8(command.data(), command.size()); |
5134 | |
5135 | StringExtractorGDBRemote response; |
5136 | Stream &output_strm = result.GetOutputStream(); |
5137 | process->GetGDBRemote().SendPacketAndReceiveResponseWithOutputSupport( |
5138 | packet.GetString(), response, process->GetInterruptTimeout(), |
5139 | [&output_strm](llvm::StringRef output) { output_strm << output; }); |
5140 | result.SetStatus(eReturnStatusSuccessFinishResult); |
5141 | output_strm.Printf(" packet: %s\n", packet.GetData()); |
5142 | const std::string &response_str = std::string(response.GetStringRef()); |
5143 | |
5144 | if (response_str.empty()) |
5145 | output_strm.PutCString("response: \nerror: UNIMPLEMENTED\n"); |
5146 | else |
5147 | output_strm.Printf("response: %s\n", response.GetStringRef().data()); |
5148 | } |
5149 | return true; |
5150 | } |
5151 | }; |
5152 | |
5153 | class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword { |
5154 | private: |
5155 | public: |
5156 | CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) |
5157 | : CommandObjectMultiword(interpreter, "process plugin packet", |
5158 | "Commands that deal with GDB remote packets.", |
5159 | nullptr) { |
5160 | LoadSubCommand( |
5161 | "history", |
5162 | CommandObjectSP( |
5163 | new CommandObjectProcessGDBRemotePacketHistory(interpreter))); |
5164 | LoadSubCommand( |
5165 | "send", CommandObjectSP( |
5166 | new CommandObjectProcessGDBRemotePacketSend(interpreter))); |
5167 | LoadSubCommand( |
5168 | "monitor", |
5169 | CommandObjectSP( |
5170 | new CommandObjectProcessGDBRemotePacketMonitor(interpreter))); |
5171 | LoadSubCommand( |
5172 | "xfer-size", |
5173 | CommandObjectSP( |
5174 | new CommandObjectProcessGDBRemotePacketXferSize(interpreter))); |
5175 | LoadSubCommand("speed-test", |
5176 | CommandObjectSP(new CommandObjectProcessGDBRemoteSpeedTest( |
5177 | interpreter))); |
5178 | } |
5179 | |
5180 | ~CommandObjectProcessGDBRemotePacket() override = default; |
5181 | }; |
5182 | |
5183 | class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword { |
5184 | public: |
5185 | CommandObjectMultiwordProcessGDBRemote(CommandInterpreter &interpreter) |
5186 | : CommandObjectMultiword( |
5187 | interpreter, "process plugin", |
5188 | "Commands for operating on a ProcessGDBRemote process.", |
5189 | "process plugin <subcommand> [<subcommand-options>]") { |
5190 | LoadSubCommand( |
5191 | "packet", |
5192 | CommandObjectSP(new CommandObjectProcessGDBRemotePacket(interpreter))); |
5193 | } |
5194 | |
5195 | ~CommandObjectMultiwordProcessGDBRemote() override = default; |
5196 | }; |
5197 | |
5198 | CommandObject *ProcessGDBRemote::GetPluginCommandObject() { |
5199 | if (!m_command_sp) |
5200 | m_command_sp = std::make_shared<CommandObjectMultiwordProcessGDBRemote>( |
5201 | GetTarget().GetDebugger().GetCommandInterpreter()); |
5202 | return m_command_sp.get(); |
5203 | } |
5204 | |
5205 | void ProcessGDBRemote::DidForkSwitchSoftwareBreakpoints(bool enable) { |
5206 | GetBreakpointSiteList().ForEach([this, enable](BreakpointSite *bp_site) { |
5207 | if (bp_site->IsEnabled() && |
5208 | (bp_site->GetType() == BreakpointSite::eSoftware || |
5209 | bp_site->GetType() == BreakpointSite::eExternal)) { |
5210 | m_gdb_comm.SendGDBStoppointTypePacket( |
5211 | eBreakpointSoftware, enable, bp_site->GetLoadAddress(), |
5212 | GetSoftwareBreakpointTrapOpcode(bp_site), GetInterruptTimeout()); |
5213 | } |
5214 | }); |
5215 | } |
5216 | |
5217 | void ProcessGDBRemote::DidForkSwitchHardwareTraps(bool enable) { |
5218 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) { |
5219 | GetBreakpointSiteList().ForEach([this, enable](BreakpointSite *bp_site) { |
5220 | if (bp_site->IsEnabled() && |
5221 | bp_site->GetType() == BreakpointSite::eHardware) { |
5222 | m_gdb_comm.SendGDBStoppointTypePacket( |
5223 | eBreakpointHardware, enable, bp_site->GetLoadAddress(), |
5224 | GetSoftwareBreakpointTrapOpcode(bp_site), GetInterruptTimeout()); |
5225 | } |
5226 | }); |
5227 | } |
5228 | |
5229 | WatchpointList &wps = GetTarget().GetWatchpointList(); |
5230 | size_t wp_count = wps.GetSize(); |
5231 | for (size_t i = 0; i < wp_count; ++i) { |
5232 | WatchpointSP wp = wps.GetByIndex(i); |
5233 | if (wp->IsEnabled()) { |
5234 | GDBStoppointType type = GetGDBStoppointType(wp.get()); |
5235 | m_gdb_comm.SendGDBStoppointTypePacket(type, enable, wp->GetLoadAddress(), |
5236 | wp->GetByteSize(), |
5237 | GetInterruptTimeout()); |
5238 | } |
5239 | } |
5240 | } |
5241 | |
5242 | void ProcessGDBRemote::DidFork(lldb::pid_t child_pid, lldb::tid_t child_tid) { |
5243 | Log *log = GetLog(GDBRLog::Process); |
5244 | |
5245 | lldb::pid_t parent_pid = m_gdb_comm.GetCurrentProcessID(); |
5246 | // Any valid TID will suffice, thread-relevant actions will set a proper TID |
5247 | // anyway. |
5248 | lldb::tid_t parent_tid = m_thread_ids.front(); |
5249 | |
5250 | lldb::pid_t follow_pid, detach_pid; |
5251 | lldb::tid_t follow_tid, detach_tid; |
5252 | |
5253 | switch (GetFollowForkMode()) { |
5254 | case eFollowParent: |
5255 | follow_pid = parent_pid; |
5256 | follow_tid = parent_tid; |
5257 | detach_pid = child_pid; |
5258 | detach_tid = child_tid; |
5259 | break; |
5260 | case eFollowChild: |
5261 | follow_pid = child_pid; |
5262 | follow_tid = child_tid; |
5263 | detach_pid = parent_pid; |
5264 | detach_tid = parent_tid; |
5265 | break; |
5266 | } |
5267 | |
5268 | // Switch to the process that is going to be detached. |
5269 | if (!m_gdb_comm.SetCurrentThread(detach_tid, detach_pid)) { |
5270 | LLDB_LOG(log, "ProcessGDBRemote::DidFork() unable to set pid/tid")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() unable to set pid/tid" ); } while (0); |
5271 | return; |
5272 | } |
5273 | |
5274 | // Disable all software breakpoints in the forked process. |
5275 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) |
5276 | DidForkSwitchSoftwareBreakpoints(false); |
5277 | |
5278 | // Remove hardware breakpoints / watchpoints from parent process if we're |
5279 | // following child. |
5280 | if (GetFollowForkMode() == eFollowChild) |
5281 | DidForkSwitchHardwareTraps(false); |
5282 | |
5283 | // Switch to the process that is going to be followed |
5284 | if (!m_gdb_comm.SetCurrentThread(follow_tid, follow_pid) || |
5285 | !m_gdb_comm.SetCurrentThreadForRun(follow_tid, follow_pid)) { |
5286 | LLDB_LOG(log, "ProcessGDBRemote::DidFork() unable to reset pid/tid")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() unable to reset pid/tid" ); } while (0); |
5287 | return; |
5288 | } |
5289 | |
5290 | LLDB_LOG(log, "Detaching process {0}", detach_pid)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Detaching process {0}", detach_pid); } while (0); |
5291 | Status error = m_gdb_comm.Detach(false, detach_pid); |
5292 | if (error.Fail()) { |
5293 | LLDB_LOG(log, "ProcessGDBRemote::DidFork() detach packet send failed: {0}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() detach packet send failed: {0}" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0) |
5294 | error.AsCString() ? error.AsCString() : "<unknown error>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() detach packet send failed: {0}" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0); |
5295 | return; |
5296 | } |
5297 | |
5298 | // Hardware breakpoints/watchpoints are not inherited implicitly, |
5299 | // so we need to readd them if we're following child. |
5300 | if (GetFollowForkMode() == eFollowChild) |
5301 | DidForkSwitchHardwareTraps(true); |
5302 | } |
5303 | |
5304 | void ProcessGDBRemote::DidVFork(lldb::pid_t child_pid, lldb::tid_t child_tid) { |
5305 | Log *log = GetLog(GDBRLog::Process); |
5306 | |
5307 | assert(!m_vfork_in_progress)(static_cast <bool> (!m_vfork_in_progress) ? void (0) : __assert_fail ("!m_vfork_in_progress", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 5307, __extension__ __PRETTY_FUNCTION__)); |
5308 | m_vfork_in_progress = true; |
5309 | |
5310 | // Disable all software breakpoints for the duration of vfork. |
5311 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) |
5312 | DidForkSwitchSoftwareBreakpoints(false); |
5313 | |
5314 | lldb::pid_t detach_pid; |
5315 | lldb::tid_t detach_tid; |
5316 | |
5317 | switch (GetFollowForkMode()) { |
5318 | case eFollowParent: |
5319 | detach_pid = child_pid; |
5320 | detach_tid = child_tid; |
5321 | break; |
5322 | case eFollowChild: |
5323 | detach_pid = m_gdb_comm.GetCurrentProcessID(); |
5324 | // Any valid TID will suffice, thread-relevant actions will set a proper TID |
5325 | // anyway. |
5326 | detach_tid = m_thread_ids.front(); |
5327 | |
5328 | // Switch to the parent process before detaching it. |
5329 | if (!m_gdb_comm.SetCurrentThread(detach_tid, detach_pid)) { |
5330 | LLDB_LOG(log, "ProcessGDBRemote::DidFork() unable to set pid/tid")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() unable to set pid/tid" ); } while (0); |
5331 | return; |
5332 | } |
5333 | |
5334 | // Remove hardware breakpoints / watchpoints from the parent process. |
5335 | DidForkSwitchHardwareTraps(false); |
5336 | |
5337 | // Switch to the child process. |
5338 | if (!m_gdb_comm.SetCurrentThread(child_tid, child_pid) || |
5339 | !m_gdb_comm.SetCurrentThreadForRun(child_tid, child_pid)) { |
5340 | LLDB_LOG(log, "ProcessGDBRemote::DidFork() unable to reset pid/tid")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() unable to reset pid/tid" ); } while (0); |
5341 | return; |
5342 | } |
5343 | break; |
5344 | } |
5345 | |
5346 | LLDB_LOG(log, "Detaching process {0}", detach_pid)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "Detaching process {0}", detach_pid); } while (0); |
5347 | Status error = m_gdb_comm.Detach(false, detach_pid); |
5348 | if (error.Fail()) { |
5349 | LLDB_LOG(log,do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() detach packet send failed: {0}" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0) |
5350 | "ProcessGDBRemote::DidFork() detach packet send failed: {0}",do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() detach packet send failed: {0}" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0) |
5351 | error.AsCString() ? error.AsCString() : "<unknown error>")do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Format("lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , __func__, "ProcessGDBRemote::DidFork() detach packet send failed: {0}" , error.AsCString() ? error.AsCString() : "<unknown error>" ); } while (0); |
5352 | return; |
5353 | } |
5354 | } |
5355 | |
5356 | void ProcessGDBRemote::DidVForkDone() { |
5357 | assert(m_vfork_in_progress)(static_cast <bool> (m_vfork_in_progress) ? void (0) : __assert_fail ("m_vfork_in_progress", "lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp" , 5357, __extension__ __PRETTY_FUNCTION__)); |
5358 | m_vfork_in_progress = false; |
5359 | |
5360 | // Reenable all software breakpoints that were enabled before vfork. |
5361 | if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) |
5362 | DidForkSwitchSoftwareBreakpoints(true); |
5363 | } |
5364 | |
5365 | void ProcessGDBRemote::DidExec() { |
5366 | // If we are following children, vfork is finished by exec (rather than |
5367 | // vforkdone that is submitted for parent). |
5368 | if (GetFollowForkMode() == eFollowChild) |
5369 | m_vfork_in_progress = false; |
5370 | Process::DidExec(); |
5371 | } |