File: | src/gnu/usr.bin/clang/liblldbPluginProcess/../../../llvm/lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp |
Warning: | line 743, column 14 The left operand of '==' is a garbage value |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | //===-- ProcessElfCore.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 <cstdlib> | |||
10 | ||||
11 | #include <memory> | |||
12 | #include <mutex> | |||
13 | ||||
14 | #include "lldb/Core/Module.h" | |||
15 | #include "lldb/Core/ModuleSpec.h" | |||
16 | #include "lldb/Core/PluginManager.h" | |||
17 | #include "lldb/Core/Section.h" | |||
18 | #include "lldb/Target/DynamicLoader.h" | |||
19 | #include "lldb/Target/MemoryRegionInfo.h" | |||
20 | #include "lldb/Target/Target.h" | |||
21 | #include "lldb/Target/UnixSignals.h" | |||
22 | #include "lldb/Utility/DataBufferHeap.h" | |||
23 | #include "lldb/Utility/Log.h" | |||
24 | #include "lldb/Utility/State.h" | |||
25 | ||||
26 | #include "llvm/BinaryFormat/ELF.h" | |||
27 | #include "llvm/Support/Threading.h" | |||
28 | ||||
29 | #include "Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h" | |||
30 | #include "Plugins/ObjectFile/ELF/ObjectFileELF.h" | |||
31 | #include "Plugins/Process/elf-core/RegisterUtilities.h" | |||
32 | #include "ProcessElfCore.h" | |||
33 | #include "ThreadElfCore.h" | |||
34 | ||||
35 | using namespace lldb_private; | |||
36 | namespace ELF = llvm::ELF; | |||
37 | ||||
38 | LLDB_PLUGIN_DEFINE(ProcessElfCore)namespace lldb_private { void lldb_initialize_ProcessElfCore( ) { ProcessElfCore::Initialize(); } void lldb_terminate_ProcessElfCore () { ProcessElfCore::Terminate(); } } | |||
39 | ||||
40 | ConstString ProcessElfCore::GetPluginNameStatic() { | |||
41 | static ConstString g_name("elf-core"); | |||
42 | return g_name; | |||
43 | } | |||
44 | ||||
45 | const char *ProcessElfCore::GetPluginDescriptionStatic() { | |||
46 | return "ELF core dump plug-in."; | |||
47 | } | |||
48 | ||||
49 | void ProcessElfCore::Terminate() { | |||
50 | PluginManager::UnregisterPlugin(ProcessElfCore::CreateInstance); | |||
51 | } | |||
52 | ||||
53 | lldb::ProcessSP ProcessElfCore::CreateInstance(lldb::TargetSP target_sp, | |||
54 | lldb::ListenerSP listener_sp, | |||
55 | const FileSpec *crash_file, | |||
56 | bool can_connect) { | |||
57 | lldb::ProcessSP process_sp; | |||
58 | if (crash_file && !can_connect) { | |||
59 | // Read enough data for a ELF32 header or ELF64 header Note: Here we care | |||
60 | // about e_type field only, so it is safe to ignore possible presence of | |||
61 | // the header extension. | |||
62 | const size_t header_size = sizeof(llvm::ELF::Elf64_Ehdr); | |||
63 | ||||
64 | auto data_sp = FileSystem::Instance().CreateDataBuffer( | |||
65 | crash_file->GetPath(), header_size, 0); | |||
66 | if (data_sp && data_sp->GetByteSize() == header_size && | |||
67 | elf::ELFHeader::MagicBytesMatch(data_sp->GetBytes())) { | |||
68 | elf::ELFHeader elf_header; | |||
69 | DataExtractor data(data_sp, lldb::eByteOrderLittle, 4); | |||
70 | lldb::offset_t data_offset = 0; | |||
71 | if (elf_header.Parse(data, &data_offset)) { | |||
72 | if (elf_header.e_type == llvm::ELF::ET_CORE) | |||
73 | process_sp = std::make_shared<ProcessElfCore>(target_sp, listener_sp, | |||
74 | *crash_file); | |||
75 | } | |||
76 | } | |||
77 | } | |||
78 | return process_sp; | |||
79 | } | |||
80 | ||||
81 | bool ProcessElfCore::CanDebug(lldb::TargetSP target_sp, | |||
82 | bool plugin_specified_by_name) { | |||
83 | // For now we are just making sure the file exists for a given module | |||
84 | if (!m_core_module_sp && FileSystem::Instance().Exists(m_core_file)) { | |||
85 | ModuleSpec core_module_spec(m_core_file, target_sp->GetArchitecture()); | |||
86 | Status error(ModuleList::GetSharedModule(core_module_spec, m_core_module_sp, | |||
87 | nullptr, nullptr, nullptr)); | |||
88 | if (m_core_module_sp) { | |||
89 | ObjectFile *core_objfile = m_core_module_sp->GetObjectFile(); | |||
90 | if (core_objfile && core_objfile->GetType() == ObjectFile::eTypeCoreFile) | |||
91 | return true; | |||
92 | } | |||
93 | } | |||
94 | return false; | |||
95 | } | |||
96 | ||||
97 | // ProcessElfCore constructor | |||
98 | ProcessElfCore::ProcessElfCore(lldb::TargetSP target_sp, | |||
99 | lldb::ListenerSP listener_sp, | |||
100 | const FileSpec &core_file) | |||
101 | : PostMortemProcess(target_sp, listener_sp), m_core_file(core_file) {} | |||
102 | ||||
103 | // Destructor | |||
104 | ProcessElfCore::~ProcessElfCore() { | |||
105 | Clear(); | |||
106 | // We need to call finalize on the process before destroying ourselves to | |||
107 | // make sure all of the broadcaster cleanup goes as planned. If we destruct | |||
108 | // this class, then Process::~Process() might have problems trying to fully | |||
109 | // destroy the broadcaster. | |||
110 | Finalize(); | |||
111 | } | |||
112 | ||||
113 | // PluginInterface | |||
114 | ConstString ProcessElfCore::GetPluginName() { return GetPluginNameStatic(); } | |||
115 | ||||
116 | uint32_t ProcessElfCore::GetPluginVersion() { return 1; } | |||
117 | ||||
118 | lldb::addr_t ProcessElfCore::AddAddressRangeFromLoadSegment( | |||
119 | const elf::ELFProgramHeader &header) { | |||
120 | const lldb::addr_t addr = header.p_vaddr; | |||
121 | FileRange file_range(header.p_offset, header.p_filesz); | |||
122 | VMRangeToFileOffset::Entry range_entry(addr, header.p_memsz, file_range); | |||
123 | ||||
124 | // Only add to m_core_aranges if the file size is non zero. Some core files | |||
125 | // have PT_LOAD segments for all address ranges, but set f_filesz to zero for | |||
126 | // the .text sections since they can be retrieved from the object files. | |||
127 | if (header.p_filesz > 0) { | |||
128 | VMRangeToFileOffset::Entry *last_entry = m_core_aranges.Back(); | |||
129 | if (last_entry && last_entry->GetRangeEnd() == range_entry.GetRangeBase() && | |||
130 | last_entry->data.GetRangeEnd() == range_entry.data.GetRangeBase() && | |||
131 | last_entry->GetByteSize() == last_entry->data.GetByteSize()) { | |||
132 | last_entry->SetRangeEnd(range_entry.GetRangeEnd()); | |||
133 | last_entry->data.SetRangeEnd(range_entry.data.GetRangeEnd()); | |||
134 | } else { | |||
135 | m_core_aranges.Append(range_entry); | |||
136 | } | |||
137 | } | |||
138 | // Keep a separate map of permissions that that isn't coalesced so all ranges | |||
139 | // are maintained. | |||
140 | const uint32_t permissions = | |||
141 | ((header.p_flags & llvm::ELF::PF_R) ? lldb::ePermissionsReadable : 0u) | | |||
142 | ((header.p_flags & llvm::ELF::PF_W) ? lldb::ePermissionsWritable : 0u) | | |||
143 | ((header.p_flags & llvm::ELF::PF_X) ? lldb::ePermissionsExecutable : 0u); | |||
144 | ||||
145 | m_core_range_infos.Append( | |||
146 | VMRangeToPermissions::Entry(addr, header.p_memsz, permissions)); | |||
147 | ||||
148 | return addr; | |||
149 | } | |||
150 | ||||
151 | // Process Control | |||
152 | Status ProcessElfCore::DoLoadCore() { | |||
153 | Status error; | |||
154 | if (!m_core_module_sp) { | |||
155 | error.SetErrorString("invalid core module"); | |||
156 | return error; | |||
157 | } | |||
158 | ||||
159 | ObjectFileELF *core = (ObjectFileELF *)(m_core_module_sp->GetObjectFile()); | |||
160 | if (core == nullptr) { | |||
161 | error.SetErrorString("invalid core object file"); | |||
162 | return error; | |||
163 | } | |||
164 | ||||
165 | llvm::ArrayRef<elf::ELFProgramHeader> segments = core->ProgramHeaders(); | |||
166 | if (segments.size() == 0) { | |||
167 | error.SetErrorString("core file has no segments"); | |||
168 | return error; | |||
169 | } | |||
170 | ||||
171 | SetCanJIT(false); | |||
172 | ||||
173 | m_thread_data_valid = true; | |||
174 | ||||
175 | bool ranges_are_sorted = true; | |||
176 | lldb::addr_t vm_addr = 0; | |||
177 | /// Walk through segments and Thread and Address Map information. | |||
178 | /// PT_NOTE - Contains Thread and Register information | |||
179 | /// PT_LOAD - Contains a contiguous range of Process Address Space | |||
180 | for (const elf::ELFProgramHeader &H : segments) { | |||
181 | DataExtractor data = core->GetSegmentData(H); | |||
182 | ||||
183 | // Parse thread contexts and auxv structure | |||
184 | if (H.p_type == llvm::ELF::PT_NOTE) { | |||
185 | if (llvm::Error error = ParseThreadContextsFromNoteSegment(H, data)) | |||
186 | return Status(std::move(error)); | |||
187 | } | |||
188 | // PT_LOAD segments contains address map | |||
189 | if (H.p_type == llvm::ELF::PT_LOAD) { | |||
190 | lldb::addr_t last_addr = AddAddressRangeFromLoadSegment(H); | |||
191 | if (vm_addr > last_addr) | |||
192 | ranges_are_sorted = false; | |||
193 | vm_addr = last_addr; | |||
194 | } | |||
195 | } | |||
196 | ||||
197 | if (!ranges_are_sorted) { | |||
198 | m_core_aranges.Sort(); | |||
199 | m_core_range_infos.Sort(); | |||
200 | } | |||
201 | ||||
202 | // Even if the architecture is set in the target, we need to override it to | |||
203 | // match the core file which is always single arch. | |||
204 | ArchSpec arch(m_core_module_sp->GetArchitecture()); | |||
205 | ||||
206 | ArchSpec target_arch = GetTarget().GetArchitecture(); | |||
207 | ArchSpec core_arch(m_core_module_sp->GetArchitecture()); | |||
208 | target_arch.MergeFrom(core_arch); | |||
209 | GetTarget().SetArchitecture(target_arch); | |||
210 | ||||
211 | SetUnixSignals(UnixSignals::Create(GetArchitecture())); | |||
212 | ||||
213 | // Ensure we found at least one thread that was stopped on a signal. | |||
214 | bool siginfo_signal_found = false; | |||
215 | bool prstatus_signal_found = false; | |||
216 | // Check we found a signal in a SIGINFO note. | |||
217 | for (const auto &thread_data : m_thread_data) { | |||
218 | if (thread_data.signo != 0) | |||
219 | siginfo_signal_found = true; | |||
220 | if (thread_data.prstatus_sig != 0) | |||
221 | prstatus_signal_found = true; | |||
222 | } | |||
223 | if (!siginfo_signal_found) { | |||
224 | // If we don't have signal from SIGINFO use the signal from each threads | |||
225 | // PRSTATUS note. | |||
226 | if (prstatus_signal_found) { | |||
227 | for (auto &thread_data : m_thread_data) | |||
228 | thread_data.signo = thread_data.prstatus_sig; | |||
229 | } else if (m_thread_data.size() > 0) { | |||
230 | // If all else fails force the first thread to be SIGSTOP | |||
231 | m_thread_data.begin()->signo = | |||
232 | GetUnixSignals()->GetSignalNumberFromName("SIGSTOP"); | |||
233 | } | |||
234 | } | |||
235 | ||||
236 | // Core files are useless without the main executable. See if we can locate | |||
237 | // the main executable using data we found in the core file notes. | |||
238 | lldb::ModuleSP exe_module_sp = GetTarget().GetExecutableModule(); | |||
239 | if (!exe_module_sp) { | |||
240 | // The first entry in the NT_FILE might be our executable | |||
241 | if (!m_nt_file_entries.empty()) { | |||
242 | ModuleSpec exe_module_spec; | |||
243 | exe_module_spec.GetArchitecture() = arch; | |||
244 | exe_module_spec.GetFileSpec().SetFile( | |||
245 | m_nt_file_entries[0].path.GetCString(), FileSpec::Style::native); | |||
246 | if (exe_module_spec.GetFileSpec()) { | |||
247 | exe_module_sp = GetTarget().GetOrCreateModule(exe_module_spec, | |||
248 | true /* notify */); | |||
249 | if (exe_module_sp) | |||
250 | GetTarget().SetExecutableModule(exe_module_sp, eLoadDependentsNo); | |||
251 | } | |||
252 | } | |||
253 | } | |||
254 | return error; | |||
255 | } | |||
256 | ||||
257 | lldb_private::DynamicLoader *ProcessElfCore::GetDynamicLoader() { | |||
258 | if (m_dyld_up.get() == nullptr) | |||
259 | m_dyld_up.reset(DynamicLoader::FindPlugin( | |||
260 | this, DynamicLoaderPOSIXDYLD::GetPluginNameStatic().GetCString())); | |||
261 | return m_dyld_up.get(); | |||
262 | } | |||
263 | ||||
264 | bool ProcessElfCore::DoUpdateThreadList(ThreadList &old_thread_list, | |||
265 | ThreadList &new_thread_list) { | |||
266 | const uint32_t num_threads = GetNumThreadContexts(); | |||
| ||||
267 | if (!m_thread_data_valid) | |||
268 | return false; | |||
269 | ||||
270 | for (lldb::tid_t tid = 0; tid < num_threads; ++tid) { | |||
271 | const ThreadData &td = m_thread_data[tid]; | |||
272 | lldb::ThreadSP thread_sp(new ThreadElfCore(*this, td)); | |||
273 | new_thread_list.AddThread(thread_sp); | |||
274 | } | |||
275 | return new_thread_list.GetSize(false) > 0; | |||
276 | } | |||
277 | ||||
278 | void ProcessElfCore::RefreshStateAfterStop() {} | |||
279 | ||||
280 | Status ProcessElfCore::DoDestroy() { return Status(); } | |||
281 | ||||
282 | // Process Queries | |||
283 | ||||
284 | bool ProcessElfCore::IsAlive() { return true; } | |||
285 | ||||
286 | // Process Memory | |||
287 | size_t ProcessElfCore::ReadMemory(lldb::addr_t addr, void *buf, size_t size, | |||
288 | Status &error) { | |||
289 | // Don't allow the caching that lldb_private::Process::ReadMemory does since | |||
290 | // in core files we have it all cached our our core file anyway. | |||
291 | return DoReadMemory(addr, buf, size, error); | |||
292 | } | |||
293 | ||||
294 | Status ProcessElfCore::GetMemoryRegionInfo(lldb::addr_t load_addr, | |||
295 | MemoryRegionInfo ®ion_info) { | |||
296 | region_info.Clear(); | |||
297 | const VMRangeToPermissions::Entry *permission_entry = | |||
298 | m_core_range_infos.FindEntryThatContainsOrFollows(load_addr); | |||
299 | if (permission_entry) { | |||
300 | if (permission_entry->Contains(load_addr)) { | |||
301 | region_info.GetRange().SetRangeBase(permission_entry->GetRangeBase()); | |||
302 | region_info.GetRange().SetRangeEnd(permission_entry->GetRangeEnd()); | |||
303 | const Flags permissions(permission_entry->data); | |||
304 | region_info.SetReadable(permissions.Test(lldb::ePermissionsReadable) | |||
305 | ? MemoryRegionInfo::eYes | |||
306 | : MemoryRegionInfo::eNo); | |||
307 | region_info.SetWritable(permissions.Test(lldb::ePermissionsWritable) | |||
308 | ? MemoryRegionInfo::eYes | |||
309 | : MemoryRegionInfo::eNo); | |||
310 | region_info.SetExecutable(permissions.Test(lldb::ePermissionsExecutable) | |||
311 | ? MemoryRegionInfo::eYes | |||
312 | : MemoryRegionInfo::eNo); | |||
313 | region_info.SetMapped(MemoryRegionInfo::eYes); | |||
314 | } else if (load_addr < permission_entry->GetRangeBase()) { | |||
315 | region_info.GetRange().SetRangeBase(load_addr); | |||
316 | region_info.GetRange().SetRangeEnd(permission_entry->GetRangeBase()); | |||
317 | region_info.SetReadable(MemoryRegionInfo::eNo); | |||
318 | region_info.SetWritable(MemoryRegionInfo::eNo); | |||
319 | region_info.SetExecutable(MemoryRegionInfo::eNo); | |||
320 | region_info.SetMapped(MemoryRegionInfo::eNo); | |||
321 | } | |||
322 | return Status(); | |||
323 | } | |||
324 | ||||
325 | region_info.GetRange().SetRangeBase(load_addr); | |||
326 | region_info.GetRange().SetRangeEnd(LLDB_INVALID_ADDRESS0xffffffffffffffffULL); | |||
327 | region_info.SetReadable(MemoryRegionInfo::eNo); | |||
328 | region_info.SetWritable(MemoryRegionInfo::eNo); | |||
329 | region_info.SetExecutable(MemoryRegionInfo::eNo); | |||
330 | region_info.SetMapped(MemoryRegionInfo::eNo); | |||
331 | return Status(); | |||
332 | } | |||
333 | ||||
334 | size_t ProcessElfCore::DoReadMemory(lldb::addr_t addr, void *buf, size_t size, | |||
335 | Status &error) { | |||
336 | ObjectFile *core_objfile = m_core_module_sp->GetObjectFile(); | |||
337 | ||||
338 | if (core_objfile == nullptr) | |||
339 | return 0; | |||
340 | ||||
341 | // Get the address range | |||
342 | const VMRangeToFileOffset::Entry *address_range = | |||
343 | m_core_aranges.FindEntryThatContains(addr); | |||
344 | if (address_range == nullptr || address_range->GetRangeEnd() < addr) { | |||
345 | error.SetErrorStringWithFormat("core file does not contain 0x%" PRIx64"llx", | |||
346 | addr); | |||
347 | return 0; | |||
348 | } | |||
349 | ||||
350 | // Convert the address into core file offset | |||
351 | const lldb::addr_t offset = addr - address_range->GetRangeBase(); | |||
352 | const lldb::addr_t file_start = address_range->data.GetRangeBase(); | |||
353 | const lldb::addr_t file_end = address_range->data.GetRangeEnd(); | |||
354 | size_t bytes_to_read = size; // Number of bytes to read from the core file | |||
355 | size_t bytes_copied = 0; // Number of bytes actually read from the core file | |||
356 | lldb::addr_t bytes_left = | |||
357 | 0; // Number of bytes available in the core file from the given address | |||
358 | ||||
359 | // Don't proceed if core file doesn't contain the actual data for this | |||
360 | // address range. | |||
361 | if (file_start == file_end) | |||
362 | return 0; | |||
363 | ||||
364 | // Figure out how many on-disk bytes remain in this segment starting at the | |||
365 | // given offset | |||
366 | if (file_end > file_start + offset) | |||
367 | bytes_left = file_end - (file_start + offset); | |||
368 | ||||
369 | if (bytes_to_read > bytes_left) | |||
370 | bytes_to_read = bytes_left; | |||
371 | ||||
372 | // If there is data available on the core file read it | |||
373 | if (bytes_to_read) | |||
374 | bytes_copied = | |||
375 | core_objfile->CopyData(offset + file_start, bytes_to_read, buf); | |||
376 | ||||
377 | return bytes_copied; | |||
378 | } | |||
379 | ||||
380 | void ProcessElfCore::Clear() { | |||
381 | m_thread_list.Clear(); | |||
382 | ||||
383 | SetUnixSignals(std::make_shared<UnixSignals>()); | |||
384 | } | |||
385 | ||||
386 | void ProcessElfCore::Initialize() { | |||
387 | static llvm::once_flag g_once_flag; | |||
388 | ||||
389 | llvm::call_once(g_once_flag, []() { | |||
390 | PluginManager::RegisterPlugin(GetPluginNameStatic(), | |||
391 | GetPluginDescriptionStatic(), CreateInstance); | |||
392 | }); | |||
393 | } | |||
394 | ||||
395 | lldb::addr_t ProcessElfCore::GetImageInfoAddress() { | |||
396 | ObjectFile *obj_file = GetTarget().GetExecutableModule()->GetObjectFile(); | |||
397 | Address addr = obj_file->GetImageInfoAddress(&GetTarget()); | |||
398 | ||||
399 | if (addr.IsValid()) | |||
400 | return addr.GetLoadAddress(&GetTarget()); | |||
401 | return LLDB_INVALID_ADDRESS0xffffffffffffffffULL; | |||
402 | } | |||
403 | ||||
404 | // Parse a FreeBSD NT_PRSTATUS note - see FreeBSD sys/procfs.h for details. | |||
405 | static void ParseFreeBSDPrStatus(ThreadData &thread_data, | |||
406 | const DataExtractor &data, | |||
407 | bool lp64) { | |||
408 | lldb::offset_t offset = 0; | |||
409 | int pr_version = data.GetU32(&offset); | |||
410 | ||||
411 | Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS(1u << 1))); | |||
412 | if (log) { | |||
413 | if (pr_version > 1) | |||
414 | LLDB_LOGF(log, "FreeBSD PRSTATUS unexpected version %d", pr_version)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("FreeBSD PRSTATUS unexpected version %d" , pr_version); } while (0); | |||
415 | } | |||
416 | ||||
417 | // Skip padding, pr_statussz, pr_gregsetsz, pr_fpregsetsz, pr_osreldate | |||
418 | if (lp64) | |||
419 | offset += 32; | |||
420 | else | |||
421 | offset += 16; | |||
422 | ||||
423 | thread_data.signo = data.GetU32(&offset); // pr_cursig | |||
424 | thread_data.tid = data.GetU32(&offset); // pr_pid | |||
425 | if (lp64) | |||
426 | offset += 4; | |||
427 | ||||
428 | size_t len = data.GetByteSize() - offset; | |||
429 | thread_data.gpregset = DataExtractor(data, offset, len); | |||
430 | } | |||
431 | ||||
432 | // Parse a FreeBSD NT_PRPSINFO note - see FreeBSD sys/procfs.h for details. | |||
433 | static void ParseFreeBSDPrPsInfo(ProcessElfCore &process, | |||
434 | const DataExtractor &data, | |||
435 | bool lp64) { | |||
436 | lldb::offset_t offset = 0; | |||
437 | int pr_version = data.GetU32(&offset); | |||
438 | ||||
439 | Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS(1u << 1))); | |||
440 | if (log) { | |||
441 | if (pr_version > 1) | |||
442 | LLDB_LOGF(log, "FreeBSD PRPSINFO unexpected version %d", pr_version)do { ::lldb_private::Log *log_private = (log); if (log_private ) log_private->Printf("FreeBSD PRPSINFO unexpected version %d" , pr_version); } while (0); | |||
443 | } | |||
444 | ||||
445 | // Skip pr_psinfosz, pr_fname, pr_psargs | |||
446 | offset += 108; | |||
447 | if (lp64) | |||
448 | offset += 4; | |||
449 | ||||
450 | process.SetID(data.GetU32(&offset)); // pr_pid | |||
451 | } | |||
452 | ||||
453 | static llvm::Error ParseNetBSDProcInfo(const DataExtractor &data, | |||
454 | uint32_t &cpi_nlwps, | |||
455 | uint32_t &cpi_signo, | |||
456 | uint32_t &cpi_siglwp, | |||
457 | uint32_t &cpi_pid) { | |||
458 | lldb::offset_t offset = 0; | |||
459 | ||||
460 | uint32_t version = data.GetU32(&offset); | |||
461 | if (version != 1) | |||
462 | return llvm::make_error<llvm::StringError>( | |||
463 | "Error parsing NetBSD core(5) notes: Unsupported procinfo version", | |||
464 | llvm::inconvertibleErrorCode()); | |||
465 | ||||
466 | uint32_t cpisize = data.GetU32(&offset); | |||
467 | if (cpisize != NETBSD::NT_PROCINFO_SIZE) | |||
468 | return llvm::make_error<llvm::StringError>( | |||
469 | "Error parsing NetBSD core(5) notes: Unsupported procinfo size", | |||
470 | llvm::inconvertibleErrorCode()); | |||
471 | ||||
472 | cpi_signo = data.GetU32(&offset); /* killing signal */ | |||
473 | ||||
474 | offset += NETBSD::NT_PROCINFO_CPI_SIGCODE_SIZE; | |||
475 | offset += NETBSD::NT_PROCINFO_CPI_SIGPEND_SIZE; | |||
476 | offset += NETBSD::NT_PROCINFO_CPI_SIGMASK_SIZE; | |||
477 | offset += NETBSD::NT_PROCINFO_CPI_SIGIGNORE_SIZE; | |||
478 | offset += NETBSD::NT_PROCINFO_CPI_SIGCATCH_SIZE; | |||
479 | cpi_pid = data.GetU32(&offset); | |||
480 | offset += NETBSD::NT_PROCINFO_CPI_PPID_SIZE; | |||
481 | offset += NETBSD::NT_PROCINFO_CPI_PGRP_SIZE; | |||
482 | offset += NETBSD::NT_PROCINFO_CPI_SID_SIZE; | |||
483 | offset += NETBSD::NT_PROCINFO_CPI_RUID_SIZE; | |||
484 | offset += NETBSD::NT_PROCINFO_CPI_EUID_SIZE; | |||
485 | offset += NETBSD::NT_PROCINFO_CPI_SVUID_SIZE; | |||
486 | offset += NETBSD::NT_PROCINFO_CPI_RGID_SIZE; | |||
487 | offset += NETBSD::NT_PROCINFO_CPI_EGID_SIZE; | |||
488 | offset += NETBSD::NT_PROCINFO_CPI_SVGID_SIZE; | |||
489 | cpi_nlwps = data.GetU32(&offset); /* number of LWPs */ | |||
490 | ||||
491 | offset += NETBSD::NT_PROCINFO_CPI_NAME_SIZE; | |||
492 | cpi_siglwp = data.GetU32(&offset); /* LWP target of killing signal */ | |||
493 | ||||
494 | return llvm::Error::success(); | |||
495 | } | |||
496 | ||||
497 | static void ParseOpenBSDProcInfo(ThreadData &thread_data, | |||
498 | const DataExtractor &data) { | |||
499 | lldb::offset_t offset = 0; | |||
500 | ||||
501 | int version = data.GetU32(&offset); | |||
502 | if (version != 1) | |||
503 | return; | |||
504 | ||||
505 | offset += 4; | |||
506 | thread_data.signo = data.GetU32(&offset); | |||
507 | } | |||
508 | ||||
509 | llvm::Expected<std::vector<CoreNote>> | |||
510 | ProcessElfCore::parseSegment(const DataExtractor &segment) { | |||
511 | lldb::offset_t offset = 0; | |||
512 | std::vector<CoreNote> result; | |||
513 | ||||
514 | while (offset < segment.GetByteSize()) { | |||
515 | ELFNote note = ELFNote(); | |||
516 | if (!note.Parse(segment, &offset)) | |||
517 | return llvm::make_error<llvm::StringError>( | |||
518 | "Unable to parse note segment", llvm::inconvertibleErrorCode()); | |||
519 | ||||
520 | size_t note_start = offset; | |||
521 | size_t note_size = llvm::alignTo(note.n_descsz, 4); | |||
522 | DataExtractor note_data(segment, note_start, note_size); | |||
523 | ||||
524 | result.push_back({note, note_data}); | |||
525 | offset += note_size; | |||
526 | } | |||
527 | ||||
528 | return std::move(result); | |||
529 | } | |||
530 | ||||
531 | llvm::Error ProcessElfCore::parseFreeBSDNotes(llvm::ArrayRef<CoreNote> notes) { | |||
532 | ArchSpec arch = GetArchitecture(); | |||
533 | bool lp64 = (arch.GetMachine() == llvm::Triple::aarch64 || | |||
534 | arch.GetMachine() == llvm::Triple::mips64 || | |||
535 | arch.GetMachine() == llvm::Triple::ppc64 || | |||
536 | arch.GetMachine() == llvm::Triple::x86_64); | |||
537 | bool have_prstatus = false; | |||
538 | bool have_prpsinfo = false; | |||
539 | ThreadData thread_data; | |||
540 | for (const auto ¬e : notes) { | |||
541 | if (note.info.n_name != "FreeBSD") | |||
542 | continue; | |||
543 | ||||
544 | if ((note.info.n_type == ELF::NT_PRSTATUS && have_prstatus) || | |||
545 | (note.info.n_type == ELF::NT_PRPSINFO && have_prpsinfo)) { | |||
546 | assert(thread_data.gpregset.GetByteSize() > 0)((void)0); | |||
547 | // Add the new thread to thread list | |||
548 | m_thread_data.push_back(thread_data); | |||
549 | thread_data = ThreadData(); | |||
550 | have_prstatus = false; | |||
551 | have_prpsinfo = false; | |||
552 | } | |||
553 | ||||
554 | switch (note.info.n_type) { | |||
555 | case ELF::NT_PRSTATUS: | |||
556 | have_prstatus = true; | |||
557 | ParseFreeBSDPrStatus(thread_data, note.data, lp64); | |||
558 | break; | |||
559 | case ELF::NT_PRPSINFO: | |||
560 | have_prpsinfo = true; | |||
561 | ParseFreeBSDPrPsInfo(*this, note.data, lp64); | |||
562 | break; | |||
563 | case ELF::NT_FREEBSD_THRMISC: { | |||
564 | lldb::offset_t offset = 0; | |||
565 | thread_data.name = note.data.GetCStr(&offset, 20); | |||
566 | break; | |||
567 | } | |||
568 | case ELF::NT_FREEBSD_PROCSTAT_AUXV: | |||
569 | // FIXME: FreeBSD sticks an int at the beginning of the note | |||
570 | m_auxv = DataExtractor(note.data, 4, note.data.GetByteSize() - 4); | |||
571 | break; | |||
572 | default: | |||
573 | thread_data.notes.push_back(note); | |||
574 | break; | |||
575 | } | |||
576 | } | |||
577 | if (!have_prstatus) { | |||
578 | return llvm::make_error<llvm::StringError>( | |||
579 | "Could not find NT_PRSTATUS note in core file.", | |||
580 | llvm::inconvertibleErrorCode()); | |||
581 | } | |||
582 | m_thread_data.push_back(thread_data); | |||
583 | return llvm::Error::success(); | |||
584 | } | |||
585 | ||||
586 | /// NetBSD specific Thread context from PT_NOTE segment | |||
587 | /// | |||
588 | /// NetBSD ELF core files use notes to provide information about | |||
589 | /// the process's state. The note name is "NetBSD-CORE" for | |||
590 | /// information that is global to the process, and "NetBSD-CORE@nn", | |||
591 | /// where "nn" is the lwpid of the LWP that the information belongs | |||
592 | /// to (such as register state). | |||
593 | /// | |||
594 | /// NetBSD uses the following note identifiers: | |||
595 | /// | |||
596 | /// ELF_NOTE_NETBSD_CORE_PROCINFO (value 1) | |||
597 | /// Note is a "netbsd_elfcore_procinfo" structure. | |||
598 | /// ELF_NOTE_NETBSD_CORE_AUXV (value 2; since NetBSD 8.0) | |||
599 | /// Note is an array of AuxInfo structures. | |||
600 | /// | |||
601 | /// NetBSD also uses ptrace(2) request numbers (the ones that exist in | |||
602 | /// machine-dependent space) to identify register info notes. The | |||
603 | /// info in such notes is in the same format that ptrace(2) would | |||
604 | /// export that information. | |||
605 | /// | |||
606 | /// For more information see /usr/include/sys/exec_elf.h | |||
607 | /// | |||
608 | llvm::Error ProcessElfCore::parseNetBSDNotes(llvm::ArrayRef<CoreNote> notes) { | |||
609 | ThreadData thread_data; | |||
610 | bool had_nt_regs = false; | |||
611 | ||||
612 | // To be extracted from struct netbsd_elfcore_procinfo | |||
613 | // Used to sanity check of the LWPs of the process | |||
614 | uint32_t nlwps = 0; | |||
615 | uint32_t signo; // killing signal | |||
616 | uint32_t siglwp; // LWP target of killing signal | |||
617 | uint32_t pr_pid; | |||
618 | ||||
619 | for (const auto ¬e : notes) { | |||
620 | llvm::StringRef name = note.info.n_name; | |||
621 | ||||
622 | if (name == "NetBSD-CORE") { | |||
623 | if (note.info.n_type == NETBSD::NT_PROCINFO) { | |||
624 | llvm::Error error = ParseNetBSDProcInfo(note.data, nlwps, signo, | |||
625 | siglwp, pr_pid); | |||
626 | if (error) | |||
627 | return error; | |||
628 | SetID(pr_pid); | |||
629 | } else if (note.info.n_type == NETBSD::NT_AUXV) { | |||
630 | m_auxv = note.data; | |||
631 | } | |||
632 | } else if (name.consume_front("NetBSD-CORE@")) { | |||
633 | lldb::tid_t tid; | |||
634 | if (name.getAsInteger(10, tid)) | |||
635 | return llvm::make_error<llvm::StringError>( | |||
636 | "Error parsing NetBSD core(5) notes: Cannot convert LWP ID " | |||
637 | "to integer", | |||
638 | llvm::inconvertibleErrorCode()); | |||
639 | ||||
640 | switch (GetArchitecture().GetMachine()) { | |||
641 | case llvm::Triple::aarch64: { | |||
642 | // Assume order PT_GETREGS, PT_GETFPREGS | |||
643 | if (note.info.n_type == NETBSD::AARCH64::NT_REGS) { | |||
644 | // If this is the next thread, push the previous one first. | |||
645 | if (had_nt_regs) { | |||
646 | m_thread_data.push_back(thread_data); | |||
647 | thread_data = ThreadData(); | |||
648 | had_nt_regs = false; | |||
649 | } | |||
650 | ||||
651 | thread_data.gpregset = note.data; | |||
652 | thread_data.tid = tid; | |||
653 | if (thread_data.gpregset.GetByteSize() == 0) | |||
654 | return llvm::make_error<llvm::StringError>( | |||
655 | "Could not find general purpose registers note in core file.", | |||
656 | llvm::inconvertibleErrorCode()); | |||
657 | had_nt_regs = true; | |||
658 | } else if (note.info.n_type == NETBSD::AARCH64::NT_FPREGS) { | |||
659 | if (!had_nt_regs || tid != thread_data.tid) | |||
660 | return llvm::make_error<llvm::StringError>( | |||
661 | "Error parsing NetBSD core(5) notes: Unexpected order " | |||
662 | "of NOTEs PT_GETFPREG before PT_GETREG", | |||
663 | llvm::inconvertibleErrorCode()); | |||
664 | thread_data.notes.push_back(note); | |||
665 | } | |||
666 | } break; | |||
667 | case llvm::Triple::x86: { | |||
668 | // Assume order PT_GETREGS, PT_GETFPREGS | |||
669 | if (note.info.n_type == NETBSD::I386::NT_REGS) { | |||
670 | // If this is the next thread, push the previous one first. | |||
671 | if (had_nt_regs) { | |||
672 | m_thread_data.push_back(thread_data); | |||
673 | thread_data = ThreadData(); | |||
674 | had_nt_regs = false; | |||
675 | } | |||
676 | ||||
677 | thread_data.gpregset = note.data; | |||
678 | thread_data.tid = tid; | |||
679 | if (thread_data.gpregset.GetByteSize() == 0) | |||
680 | return llvm::make_error<llvm::StringError>( | |||
681 | "Could not find general purpose registers note in core file.", | |||
682 | llvm::inconvertibleErrorCode()); | |||
683 | had_nt_regs = true; | |||
684 | } else if (note.info.n_type == NETBSD::I386::NT_FPREGS) { | |||
685 | if (!had_nt_regs || tid != thread_data.tid) | |||
686 | return llvm::make_error<llvm::StringError>( | |||
687 | "Error parsing NetBSD core(5) notes: Unexpected order " | |||
688 | "of NOTEs PT_GETFPREG before PT_GETREG", | |||
689 | llvm::inconvertibleErrorCode()); | |||
690 | thread_data.notes.push_back(note); | |||
691 | } | |||
692 | } break; | |||
693 | case llvm::Triple::x86_64: { | |||
694 | // Assume order PT_GETREGS, PT_GETFPREGS | |||
695 | if (note.info.n_type == NETBSD::AMD64::NT_REGS) { | |||
696 | // If this is the next thread, push the previous one first. | |||
697 | if (had_nt_regs) { | |||
698 | m_thread_data.push_back(thread_data); | |||
699 | thread_data = ThreadData(); | |||
700 | had_nt_regs = false; | |||
701 | } | |||
702 | ||||
703 | thread_data.gpregset = note.data; | |||
704 | thread_data.tid = tid; | |||
705 | if (thread_data.gpregset.GetByteSize() == 0) | |||
706 | return llvm::make_error<llvm::StringError>( | |||
707 | "Could not find general purpose registers note in core file.", | |||
708 | llvm::inconvertibleErrorCode()); | |||
709 | had_nt_regs = true; | |||
710 | } else if (note.info.n_type == NETBSD::AMD64::NT_FPREGS) { | |||
711 | if (!had_nt_regs || tid != thread_data.tid) | |||
712 | return llvm::make_error<llvm::StringError>( | |||
713 | "Error parsing NetBSD core(5) notes: Unexpected order " | |||
714 | "of NOTEs PT_GETFPREG before PT_GETREG", | |||
715 | llvm::inconvertibleErrorCode()); | |||
716 | thread_data.notes.push_back(note); | |||
717 | } | |||
718 | } break; | |||
719 | default: | |||
720 | break; | |||
721 | } | |||
722 | } | |||
723 | } | |||
724 | ||||
725 | // Push the last thread. | |||
726 | if (had_nt_regs
| |||
727 | m_thread_data.push_back(thread_data); | |||
728 | ||||
729 | if (m_thread_data.empty()) | |||
730 | return llvm::make_error<llvm::StringError>( | |||
731 | "Error parsing NetBSD core(5) notes: No threads information " | |||
732 | "specified in notes", | |||
733 | llvm::inconvertibleErrorCode()); | |||
734 | ||||
735 | if (m_thread_data.size() != nlwps) | |||
736 | return llvm::make_error<llvm::StringError>( | |||
737 | "Error parsing NetBSD core(5) notes: Mismatch between the number " | |||
738 | "of LWPs in netbsd_elfcore_procinfo and the number of LWPs specified " | |||
739 | "by MD notes", | |||
740 | llvm::inconvertibleErrorCode()); | |||
741 | ||||
742 | // Signal targeted at the whole process. | |||
743 | if (siglwp == 0) { | |||
| ||||
744 | for (auto &data : m_thread_data) | |||
745 | data.signo = signo; | |||
746 | } | |||
747 | // Signal destined for a particular LWP. | |||
748 | else { | |||
749 | bool passed = false; | |||
750 | ||||
751 | for (auto &data : m_thread_data) { | |||
752 | if (data.tid == siglwp) { | |||
753 | data.signo = signo; | |||
754 | passed = true; | |||
755 | break; | |||
756 | } | |||
757 | } | |||
758 | ||||
759 | if (!passed) | |||
760 | return llvm::make_error<llvm::StringError>( | |||
761 | "Error parsing NetBSD core(5) notes: Signal passed to unknown LWP", | |||
762 | llvm::inconvertibleErrorCode()); | |||
763 | } | |||
764 | ||||
765 | return llvm::Error::success(); | |||
766 | } | |||
767 | ||||
768 | llvm::Error ProcessElfCore::parseOpenBSDNotes(llvm::ArrayRef<CoreNote> notes) { | |||
769 | ThreadData thread_data; | |||
770 | for (const auto ¬e : notes) { | |||
771 | // OpenBSD per-thread information is stored in notes named "OpenBSD@nnn" so | |||
772 | // match on the initial part of the string. | |||
773 | if (!llvm::StringRef(note.info.n_name).startswith("OpenBSD")) | |||
774 | continue; | |||
775 | ||||
776 | switch (note.info.n_type) { | |||
777 | case OPENBSD::NT_PROCINFO: | |||
778 | ParseOpenBSDProcInfo(thread_data, note.data); | |||
779 | break; | |||
780 | case OPENBSD::NT_AUXV: | |||
781 | m_auxv = note.data; | |||
782 | break; | |||
783 | case OPENBSD::NT_REGS: | |||
784 | thread_data.gpregset = note.data; | |||
785 | break; | |||
786 | default: | |||
787 | thread_data.notes.push_back(note); | |||
788 | break; | |||
789 | } | |||
790 | } | |||
791 | if (thread_data.gpregset.GetByteSize() == 0) { | |||
792 | return llvm::make_error<llvm::StringError>( | |||
793 | "Could not find general purpose registers note in core file.", | |||
794 | llvm::inconvertibleErrorCode()); | |||
795 | } | |||
796 | m_thread_data.push_back(thread_data); | |||
797 | return llvm::Error::success(); | |||
798 | } | |||
799 | ||||
800 | /// A description of a linux process usually contains the following NOTE | |||
801 | /// entries: | |||
802 | /// - NT_PRPSINFO - General process information like pid, uid, name, ... | |||
803 | /// - NT_SIGINFO - Information about the signal that terminated the process | |||
804 | /// - NT_AUXV - Process auxiliary vector | |||
805 | /// - NT_FILE - Files mapped into memory | |||
806 | /// | |||
807 | /// Additionally, for each thread in the process the core file will contain at | |||
808 | /// least the NT_PRSTATUS note, containing the thread id and general purpose | |||
809 | /// registers. It may include additional notes for other register sets (floating | |||
810 | /// point and vector registers, ...). The tricky part here is that some of these | |||
811 | /// notes have "CORE" in their owner fields, while other set it to "LINUX". | |||
812 | llvm::Error ProcessElfCore::parseLinuxNotes(llvm::ArrayRef<CoreNote> notes) { | |||
813 | const ArchSpec &arch = GetArchitecture(); | |||
814 | bool have_prstatus = false; | |||
815 | bool have_prpsinfo = false; | |||
816 | ThreadData thread_data; | |||
817 | for (const auto ¬e : notes) { | |||
818 | if (note.info.n_name != "CORE" && note.info.n_name != "LINUX") | |||
819 | continue; | |||
820 | ||||
821 | if ((note.info.n_type == ELF::NT_PRSTATUS && have_prstatus) || | |||
822 | (note.info.n_type == ELF::NT_PRPSINFO && have_prpsinfo)) { | |||
823 | assert(thread_data.gpregset.GetByteSize() > 0)((void)0); | |||
824 | // Add the new thread to thread list | |||
825 | m_thread_data.push_back(thread_data); | |||
826 | thread_data = ThreadData(); | |||
827 | have_prstatus = false; | |||
828 | have_prpsinfo = false; | |||
829 | } | |||
830 | ||||
831 | switch (note.info.n_type) { | |||
832 | case ELF::NT_PRSTATUS: { | |||
833 | have_prstatus = true; | |||
834 | ELFLinuxPrStatus prstatus; | |||
835 | Status status = prstatus.Parse(note.data, arch); | |||
836 | if (status.Fail()) | |||
837 | return status.ToError(); | |||
838 | thread_data.prstatus_sig = prstatus.pr_cursig; | |||
839 | thread_data.tid = prstatus.pr_pid; | |||
840 | uint32_t header_size = ELFLinuxPrStatus::GetSize(arch); | |||
841 | size_t len = note.data.GetByteSize() - header_size; | |||
842 | thread_data.gpregset = DataExtractor(note.data, header_size, len); | |||
843 | break; | |||
844 | } | |||
845 | case ELF::NT_PRPSINFO: { | |||
846 | have_prpsinfo = true; | |||
847 | ELFLinuxPrPsInfo prpsinfo; | |||
848 | Status status = prpsinfo.Parse(note.data, arch); | |||
849 | if (status.Fail()) | |||
850 | return status.ToError(); | |||
851 | thread_data.name.assign (prpsinfo.pr_fname, strnlen (prpsinfo.pr_fname, sizeof (prpsinfo.pr_fname))); | |||
852 | SetID(prpsinfo.pr_pid); | |||
853 | break; | |||
854 | } | |||
855 | case ELF::NT_SIGINFO: { | |||
856 | ELFLinuxSigInfo siginfo; | |||
857 | Status status = siginfo.Parse(note.data, arch); | |||
858 | if (status.Fail()) | |||
859 | return status.ToError(); | |||
860 | thread_data.signo = siginfo.si_signo; | |||
861 | break; | |||
862 | } | |||
863 | case ELF::NT_FILE: { | |||
864 | m_nt_file_entries.clear(); | |||
865 | lldb::offset_t offset = 0; | |||
866 | const uint64_t count = note.data.GetAddress(&offset); | |||
867 | note.data.GetAddress(&offset); // Skip page size | |||
868 | for (uint64_t i = 0; i < count; ++i) { | |||
869 | NT_FILE_Entry entry; | |||
870 | entry.start = note.data.GetAddress(&offset); | |||
871 | entry.end = note.data.GetAddress(&offset); | |||
872 | entry.file_ofs = note.data.GetAddress(&offset); | |||
873 | m_nt_file_entries.push_back(entry); | |||
874 | } | |||
875 | for (uint64_t i = 0; i < count; ++i) { | |||
876 | const char *path = note.data.GetCStr(&offset); | |||
877 | if (path && path[0]) | |||
878 | m_nt_file_entries[i].path.SetCString(path); | |||
879 | } | |||
880 | break; | |||
881 | } | |||
882 | case ELF::NT_AUXV: | |||
883 | m_auxv = note.data; | |||
884 | break; | |||
885 | default: | |||
886 | thread_data.notes.push_back(note); | |||
887 | break; | |||
888 | } | |||
889 | } | |||
890 | // Add last entry in the note section | |||
891 | if (have_prstatus) | |||
892 | m_thread_data.push_back(thread_data); | |||
893 | return llvm::Error::success(); | |||
894 | } | |||
895 | ||||
896 | /// Parse Thread context from PT_NOTE segment and store it in the thread list | |||
897 | /// A note segment consists of one or more NOTE entries, but their types and | |||
898 | /// meaning differ depending on the OS. | |||
899 | llvm::Error ProcessElfCore::ParseThreadContextsFromNoteSegment( | |||
900 | const elf::ELFProgramHeader &segment_header, DataExtractor segment_data) { | |||
901 | assert(segment_header.p_type == llvm::ELF::PT_NOTE)((void)0); | |||
902 | ||||
903 | auto notes_or_error = parseSegment(segment_data); | |||
904 | if(!notes_or_error) | |||
905 | return notes_or_error.takeError(); | |||
906 | switch (GetArchitecture().GetTriple().getOS()) { | |||
907 | case llvm::Triple::FreeBSD: | |||
908 | return parseFreeBSDNotes(*notes_or_error); | |||
909 | case llvm::Triple::Linux: | |||
910 | return parseLinuxNotes(*notes_or_error); | |||
911 | case llvm::Triple::NetBSD: | |||
912 | return parseNetBSDNotes(*notes_or_error); | |||
913 | case llvm::Triple::OpenBSD: | |||
914 | return parseOpenBSDNotes(*notes_or_error); | |||
915 | default: | |||
916 | return llvm::make_error<llvm::StringError>( | |||
917 | "Don't know how to parse core file. Unsupported OS.", | |||
918 | llvm::inconvertibleErrorCode()); | |||
919 | } | |||
920 | } | |||
921 | ||||
922 | uint32_t ProcessElfCore::GetNumThreadContexts() { | |||
923 | if (!m_thread_data_valid) | |||
924 | DoLoadCore(); | |||
925 | return m_thread_data.size(); | |||
926 | } | |||
927 | ||||
928 | ArchSpec ProcessElfCore::GetArchitecture() { | |||
929 | ArchSpec arch = m_core_module_sp->GetObjectFile()->GetArchitecture(); | |||
930 | ||||
931 | ArchSpec target_arch = GetTarget().GetArchitecture(); | |||
932 | arch.MergeFrom(target_arch); | |||
933 | ||||
934 | // On MIPS there is no way to differentiate betwenn 32bit and 64bit core | |||
935 | // files and this information can't be merged in from the target arch so we | |||
936 | // fail back to unconditionally returning the target arch in this config. | |||
937 | if (target_arch.IsMIPS()) { | |||
938 | return target_arch; | |||
939 | } | |||
940 | ||||
941 | return arch; | |||
942 | } | |||
943 | ||||
944 | DataExtractor ProcessElfCore::GetAuxvData() { | |||
945 | const uint8_t *start = m_auxv.GetDataStart(); | |||
946 | size_t len = m_auxv.GetByteSize(); | |||
947 | lldb::DataBufferSP buffer(new lldb_private::DataBufferHeap(start, len)); | |||
948 | return DataExtractor(buffer, GetByteOrder(), GetAddressByteSize()); | |||
949 | } | |||
950 | ||||
951 | bool ProcessElfCore::GetProcessInfo(ProcessInstanceInfo &info) { | |||
952 | info.Clear(); | |||
953 | info.SetProcessID(GetID()); | |||
954 | info.SetArchitecture(GetArchitecture()); | |||
955 | lldb::ModuleSP module_sp = GetTarget().GetExecutableModule(); | |||
956 | if (module_sp) { | |||
957 | const bool add_exe_file_as_first_arg = false; | |||
958 | info.SetExecutableFile(GetTarget().GetExecutableModule()->GetFileSpec(), | |||
959 | add_exe_file_as_first_arg); | |||
960 | } | |||
961 | return true; | |||
962 | } |