diff options
Diffstat (limited to 'lldb/source/Plugins')
9 files changed, 603 insertions, 18 deletions
diff --git a/lldb/source/Plugins/Process/minidump/CMakeLists.txt b/lldb/source/Plugins/Process/minidump/CMakeLists.txt index ab3cfbb58f0..f6f9faff875 100644 --- a/lldb/source/Plugins/Process/minidump/CMakeLists.txt +++ b/lldb/source/Plugins/Process/minidump/CMakeLists.txt @@ -4,4 +4,6 @@ add_lldb_library(lldbPluginProcessMinidump MinidumpTypes.cpp MinidumpParser.cpp RegisterContextMinidump_x86_64.cpp + ThreadMinidump.cpp + ProcessMinidump.cpp ) diff --git a/lldb/source/Plugins/Process/minidump/MinidumpParser.cpp b/lldb/source/Plugins/Process/minidump/MinidumpParser.cpp index 2ccea6839cb..6661e0bba1d 100644 --- a/lldb/source/Plugins/Process/minidump/MinidumpParser.cpp +++ b/lldb/source/Plugins/Process/minidump/MinidumpParser.cpp @@ -1,11 +1,11 @@ -//===-- MinidumpParser.cpp ---------------------------------------*- C++ -*-===// +//===-- MinidumpParser.cpp -------------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // -//===----------------------------------------------------------------------===// +//===--------------------------------------------------------------------===// // Project includes #include "MinidumpParser.h" @@ -65,8 +65,7 @@ MinidumpParser::MinidumpParser( } llvm::ArrayRef<uint8_t> MinidumpParser::GetData() { - return llvm::ArrayRef<uint8_t>(m_data_sp->GetBytes(), - m_data_sp->GetByteSize()); + return m_data_sp->GetData(); } llvm::ArrayRef<uint8_t> @@ -76,15 +75,14 @@ MinidumpParser::GetStream(MinidumpStreamType stream_type) { return {}; // check if there is enough data - if (iter->second.rva + iter->second.data_size > m_data_sp->GetByteSize()) + if (iter->second.rva + iter->second.data_size > GetData().size()) return {}; - return llvm::ArrayRef<uint8_t>(m_data_sp->GetBytes() + iter->second.rva, - iter->second.data_size); + return GetData().slice(iter->second.rva, iter->second.data_size); } llvm::Optional<std::string> MinidumpParser::GetMinidumpString(uint32_t rva) { - auto arr_ref = m_data_sp->GetData(); + auto arr_ref = GetData(); if (rva > arr_ref.size()) return llvm::None; arr_ref = arr_ref.drop_front(rva); @@ -100,6 +98,14 @@ llvm::ArrayRef<MinidumpThread> MinidumpParser::GetThreads() { return MinidumpThread::ParseThreadList(data); } +llvm::ArrayRef<uint8_t> +MinidumpParser::GetThreadContext(const MinidumpThread &td) { + if (td.thread_context.rva + td.thread_context.data_size > GetData().size()) + return llvm::None; + + return GetData().slice(td.thread_context.rva, td.thread_context.data_size); +} + const MinidumpSystemInfo *MinidumpParser::GetSystemInfo() { llvm::ArrayRef<uint8_t> data = GetStream(MinidumpStreamType::SystemInfo); @@ -224,3 +230,33 @@ const MinidumpExceptionStream *MinidumpParser::GetExceptionStream() { return MinidumpExceptionStream::Parse(data); } + +llvm::Optional<Range> MinidumpParser::FindMemoryRange(lldb::addr_t addr) { + llvm::ArrayRef<uint8_t> data = GetStream(MinidumpStreamType::MemoryList); + + if (data.size() == 0) + return llvm::None; + + llvm::ArrayRef<MinidumpMemoryDescriptor> memory_list = + MinidumpMemoryDescriptor::ParseMemoryList(data); + + if (memory_list.size() == 0) + return llvm::None; + + for (auto memory_desc : memory_list) { + const MinidumpLocationDescriptor &loc_desc = memory_desc.memory; + const lldb::addr_t range_start = memory_desc.start_of_memory_range; + const size_t range_size = loc_desc.data_size; + + if (loc_desc.rva + loc_desc.data_size > GetData().size()) + return llvm::None; + + if (range_start <= addr && addr < range_start + range_size) { + return Range(range_start, GetData().slice(loc_desc.rva, range_size)); + } + } + + // TODO parse Memory64List which is present in full-memory Minidumps + + return llvm::None; +} diff --git a/lldb/source/Plugins/Process/minidump/MinidumpParser.h b/lldb/source/Plugins/Process/minidump/MinidumpParser.h index 76a8ece00b2..686d0f39f6e 100644 --- a/lldb/source/Plugins/Process/minidump/MinidumpParser.h +++ b/lldb/source/Plugins/Process/minidump/MinidumpParser.h @@ -1,12 +1,11 @@ -//===-- MinidumpParser.h -----------------------------------------*- C++ -//-*-===// +//===-- MinidumpParser.h ---------------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // -//===----------------------------------------------------------------------===// +//===--------------------------------------------------------------------===// #ifndef liblldb_MinidumpParser_h_ #define liblldb_MinidumpParser_h_ @@ -25,15 +24,22 @@ #include "llvm/ADT/StringRef.h" // C includes - // C++ includes -#include <cstring> -#include <unordered_map> namespace lldb_private { namespace minidump { +// Describes a range of memory captured in the Minidump +struct Range { + lldb::addr_t start; // virtual address of the beginning of the range + // range_ref - absolute pointer to the first byte of the range and size + llvm::ArrayRef<uint8_t> range_ref; + + Range(lldb::addr_t start, llvm::ArrayRef<uint8_t> range_ref) + : start(start), range_ref(range_ref) {} +}; + class MinidumpParser { public: static llvm::Optional<MinidumpParser> @@ -47,6 +53,8 @@ public: llvm::ArrayRef<MinidumpThread> GetThreads(); + llvm::ArrayRef<uint8_t> GetThreadContext(const MinidumpThread &td); + const MinidumpSystemInfo *GetSystemInfo(); ArchSpec GetArchitecture(); @@ -61,6 +69,8 @@ public: const MinidumpExceptionStream *GetExceptionStream(); + llvm::Optional<Range> FindMemoryRange(lldb::addr_t addr); + private: lldb::DataBufferSP m_data_sp; const MinidumpHeader *m_header; diff --git a/lldb/source/Plugins/Process/minidump/MinidumpTypes.cpp b/lldb/source/Plugins/Process/minidump/MinidumpTypes.cpp index 5f8aa59397f..55f859838cd 100644 --- a/lldb/source/Plugins/Process/minidump/MinidumpTypes.cpp +++ b/lldb/source/Plugins/Process/minidump/MinidumpTypes.cpp @@ -85,7 +85,7 @@ MinidumpThread::ParseThreadList(llvm::ArrayRef<uint8_t> &data) { if (error.Fail() || *thread_count * sizeof(MinidumpThread) > data.size()) return {}; - return llvm::ArrayRef<MinidumpThread>( + return llvm::makeArrayRef( reinterpret_cast<const MinidumpThread *>(data.data()), *thread_count); } @@ -162,7 +162,7 @@ MinidumpModule::ParseModuleList(llvm::ArrayRef<uint8_t> &data) { if (error.Fail() || *modules_count * sizeof(MinidumpModule) > data.size()) return {}; - return llvm::ArrayRef<MinidumpModule>( + return llvm::makeArrayRef( reinterpret_cast<const MinidumpModule *>(data.data()), *modules_count); } @@ -176,3 +176,16 @@ MinidumpExceptionStream::Parse(llvm::ArrayRef<uint8_t> &data) { return exception_stream; } + +llvm::ArrayRef<MinidumpMemoryDescriptor> +MinidumpMemoryDescriptor::ParseMemoryList(llvm::ArrayRef<uint8_t> &data) { + const llvm::support::ulittle32_t *mem_ranges_count; + Error error = consumeObject(data, mem_ranges_count); + if (error.Fail() || + *mem_ranges_count * sizeof(MinidumpMemoryDescriptor) > data.size()) + return {}; + + return llvm::makeArrayRef( + reinterpret_cast<const MinidumpMemoryDescriptor *>(data.data()), + *mem_ranges_count); +} diff --git a/lldb/source/Plugins/Process/minidump/MinidumpTypes.h b/lldb/source/Plugins/Process/minidump/MinidumpTypes.h index bc3d846550a..b452c27514b 100644 --- a/lldb/source/Plugins/Process/minidump/MinidumpTypes.h +++ b/lldb/source/Plugins/Process/minidump/MinidumpTypes.h @@ -207,6 +207,9 @@ static_assert(sizeof(MinidumpLocationDescriptor) == 8, struct MinidumpMemoryDescriptor { llvm::support::ulittle64_t start_of_memory_range; MinidumpLocationDescriptor memory; + + static llvm::ArrayRef<MinidumpMemoryDescriptor> + ParseMemoryList(llvm::ArrayRef<uint8_t> &data); }; static_assert(sizeof(MinidumpMemoryDescriptor) == 16, "sizeof MinidumpMemoryDescriptor is not correct!"); @@ -362,7 +365,8 @@ static_assert(sizeof(MinidumpModule) == 108, // Exception stuff struct MinidumpException { enum { - MaxParams = 15, + ExceptonInfoMaxParams = 15, + DumpRequested = 0xFFFFFFFF, }; llvm::support::ulittle32_t exception_code; @@ -371,7 +375,7 @@ struct MinidumpException { llvm::support::ulittle64_t exception_address; llvm::support::ulittle32_t number_parameters; llvm::support::ulittle32_t unused_alignment; - llvm::support::ulittle64_t exception_information[MaxParams]; + llvm::support::ulittle64_t exception_information[ExceptonInfoMaxParams]; }; static_assert(sizeof(MinidumpException) == 152, "sizeof MinidumpException is not correct!"); diff --git a/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp new file mode 100644 index 00000000000..12f83fe3f20 --- /dev/null +++ b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp @@ -0,0 +1,263 @@ +//===-- ProcessMinidump.cpp -------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// Project includes +#include "ProcessMinidump.h" +#include "ThreadMinidump.h" + +// Other libraries and framework includes +#include "lldb/Core/DataBufferHeap.h" +#include "lldb/Core/Log.h" +#include "lldb/Core/Module.h" +#include "lldb/Core/ModuleSpec.h" +#include "lldb/Core/PluginManager.h" +#include "lldb/Core/Section.h" +#include "lldb/Core/State.h" +#include "lldb/Target/DynamicLoader.h" +#include "lldb/Target/MemoryRegionInfo.h" +#include "lldb/Target/Target.h" +#include "lldb/Target/UnixSignals.h" +#include "lldb/Utility/LLDBAssert.h" + +// C includes +// C++ includes + +using namespace lldb_private; +using namespace minidump; + +ConstString ProcessMinidump::GetPluginNameStatic() { + static ConstString g_name("minidump"); + return g_name; +} + +const char *ProcessMinidump::GetPluginDescriptionStatic() { + return "Minidump plug-in."; +} + +lldb::ProcessSP ProcessMinidump::CreateInstance(lldb::TargetSP target_sp, + lldb::ListenerSP listener_sp, + const FileSpec *crash_file) { + if (!crash_file) + return nullptr; + + lldb::ProcessSP process_sp; + // Read enough data for the Minidump header + const size_t header_size = sizeof(MinidumpHeader); + lldb::DataBufferSP data_sp(crash_file->MemoryMapFileContents(0, header_size)); + // The memory map can fail + if (!data_sp) + return nullptr; + + // first, only try to parse the header, beacuse we need to be fast + llvm::ArrayRef<uint8_t> header_data(data_sp->GetBytes(), header_size); + const MinidumpHeader *header = MinidumpHeader::Parse(header_data); + + if (data_sp->GetByteSize() != header_size || header == nullptr) + return nullptr; + + lldb::DataBufferSP all_data_sp(crash_file->MemoryMapFileContents()); + auto minidump_parser = MinidumpParser::Create(all_data_sp); + // check if the parser object is valid + // skip if the Minidump file is Windows generated, because we are still + // work-in-progress + if (!minidump_parser || + minidump_parser->GetArchitecture().GetTriple().getOS() == + llvm::Triple::OSType::Win32) + return nullptr; + + return lldb::ProcessSP(new ProcessMinidump( + target_sp, listener_sp, *crash_file, minidump_parser.getValue())); +} + +// TODO leave it to be only "return true" ? +bool ProcessMinidump::CanDebug(lldb::TargetSP target_sp, + bool plugin_specified_by_name) { + return true; +} + +ProcessMinidump::ProcessMinidump(lldb::TargetSP target_sp, + lldb::ListenerSP listener_sp, + const FileSpec &core_file, + MinidumpParser minidump_parser) + : Process(target_sp, listener_sp), m_minidump_parser(minidump_parser), + m_core_file(core_file) {} + +ProcessMinidump::~ProcessMinidump() { + Clear(); + // We need to call finalize on the process before destroying ourselves + // to make sure all of the broadcaster cleanup goes as planned. If we + // destruct this class, then Process::~Process() might have problems + // trying to fully destroy the broadcaster. + Finalize(); +} + +void ProcessMinidump::Initialize() { + static std::once_flag g_once_flag; + + std::call_once(g_once_flag, []() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), + ProcessMinidump::CreateInstance); + }); +} + +void ProcessMinidump::Terminate() { + PluginManager::UnregisterPlugin(ProcessMinidump::CreateInstance); +} + +Error ProcessMinidump::DoLoadCore() { + Error error; + + m_thread_list = m_minidump_parser.GetThreads(); + m_active_exception = m_minidump_parser.GetExceptionStream(); + GetTarget().SetArchitecture(GetArchitecture()); + ReadModuleList(); + + llvm::Optional<lldb::pid_t> pid = m_minidump_parser.GetPid(); + if (!pid) { + error.SetErrorString("failed to parse PID"); + return error; + } + SetID(pid.getValue()); + + return error; +} + +DynamicLoader *ProcessMinidump::GetDynamicLoader() { + if (m_dyld_ap.get() == nullptr) + m_dyld_ap.reset(DynamicLoader::FindPlugin(this, nullptr)); + return m_dyld_ap.get(); +} + +ConstString ProcessMinidump::GetPluginName() { return GetPluginNameStatic(); } + +uint32_t ProcessMinidump::GetPluginVersion() { return 1; } + +Error ProcessMinidump::DoDestroy() { return Error(); } + +void ProcessMinidump::RefreshStateAfterStop() { + if (!m_active_exception) + return; + + if (m_active_exception->exception_record.exception_code == + MinidumpException::DumpRequested) { + return; + } + + lldb::StopInfoSP stop_info; + lldb::ThreadSP stop_thread; + + Process::m_thread_list.SetSelectedThreadByID(m_active_exception->thread_id); + stop_thread = Process::m_thread_list.GetSelectedThread(); + ArchSpec arch = GetArchitecture(); + + if (arch.GetTriple().getOS() == llvm::Triple::Linux) { + stop_info = StopInfo::CreateStopReasonWithSignal( + *stop_thread, m_active_exception->exception_record.exception_code); + } else { + std::string desc; + llvm::raw_string_ostream desc_stream(desc); + desc_stream << "Exception " + << llvm::format_hex( + m_active_exception->exception_record.exception_code, 8) + << " encountered at address " + << llvm::format_hex( + m_active_exception->exception_record.exception_address, + 8); + stop_info = StopInfo::CreateStopReasonWithException( + *stop_thread, desc_stream.str().c_str()); + } + + stop_thread->SetStopInfo(stop_info); +} + +bool ProcessMinidump::IsAlive() { return true; } + +bool ProcessMinidump::WarnBeforeDetach() const { return false; } + +size_t ProcessMinidump::ReadMemory(lldb::addr_t addr, void *buf, size_t size, + lldb_private::Error &error) { + // Don't allow the caching that lldb_private::Process::ReadMemory does + // since we have it all cached in our dump file anyway. + return DoReadMemory(addr, buf, size, error); +} + +size_t ProcessMinidump::DoReadMemory(lldb::addr_t addr, void *buf, size_t size, + lldb_private::Error &error) { + // I don't have a sense of how frequently this is called or how many memory + // ranges a Minidump typically has, so I'm not sure if searching for the + // appropriate range linearly each time is stupid. Perhaps we should build + // an index for faster lookups. + llvm::Optional<Range> range = m_minidump_parser.FindMemoryRange(addr); + if (!range) + return 0; + + // There's at least some overlap between the beginning of the desired range + // (addr) and the current range. Figure out where the overlap begins and + // how much overlap there is, then copy it to the destination buffer. + lldbassert(range->start <= addr); + const size_t offset = addr - range->start; + lldbassert(offset < range->range_ref.size()); + const size_t overlap = std::min(size, range->range_ref.size() - offset); + std::memcpy(buf, range->range_ref.data() + offset, overlap); + return overlap; +} + +ArchSpec ProcessMinidump::GetArchitecture() { + return m_minidump_parser.GetArchitecture(); +} + +// TODO - parse the MemoryInfoListStream and implement this method +Error ProcessMinidump::GetMemoryRegionInfo( + lldb::addr_t load_addr, lldb_private::MemoryRegionInfo &range_info) { + return {}; +} + +void ProcessMinidump::Clear() { Process::m_thread_list.Clear(); } + +bool ProcessMinidump::UpdateThreadList( + lldb_private::ThreadList &old_thread_list, + lldb_private::ThreadList &new_thread_list) { + uint32_t num_threads = 0; + if (m_thread_list.size() > 0) + num_threads = m_thread_list.size(); + + for (lldb::tid_t tid = 0; tid < num_threads; ++tid) { + lldb::ThreadSP thread_sp(new ThreadMinidump( + *this, m_thread_list[tid], + m_minidump_parser.GetThreadContext(m_thread_list[tid]))); + new_thread_list.AddThread(thread_sp); + } + return new_thread_list.GetSize(false) > 0; +} + +void ProcessMinidump::ReadModuleList() { + llvm::ArrayRef<MinidumpModule> modules = m_minidump_parser.GetModuleList(); + + for (auto module : modules) { + llvm::Optional<std::string> name = + m_minidump_parser.GetMinidumpString(module.module_name_rva); + + if (!name) + continue; + + const auto file_spec = FileSpec(name.getValue(), true); + ModuleSpec module_spec = file_spec; + Error error; + lldb::ModuleSP module_sp = + this->GetTarget().GetSharedModule(module_spec, &error); + if (!module_sp || error.Fail()) { + continue; + } + + bool load_addr_changed = false; + module_sp->SetLoadAddress(this->GetTarget(), module.base_of_image, false, + load_addr_changed); + } +} diff --git a/lldb/source/Plugins/Process/minidump/ProcessMinidump.h b/lldb/source/Plugins/Process/minidump/ProcessMinidump.h new file mode 100644 index 00000000000..00c45d6491a --- /dev/null +++ b/lldb/source/Plugins/Process/minidump/ProcessMinidump.h @@ -0,0 +1,103 @@ +//===-- ProcessMinidump.h ---------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef liblldb_ProcessMinidump_h_ +#define liblldb_ProcessMinidump_h_ + +// Project includes +#include "MinidumpParser.h" +#include "MinidumpTypes.h" + +// Other libraries and framework includes +#include "lldb/Core/ConstString.h" +#include "lldb/Core/Error.h" +#include "lldb/Target/Process.h" +#include "lldb/Target/StopInfo.h" +#include "lldb/Target/Target.h" + +#include "llvm/Support/Format.h" +#include "llvm/Support/raw_ostream.h" + +// C Includes +// C++ Includes + +namespace lldb_private { + +namespace minidump { + +class ProcessMinidump : public Process { +public: + static lldb::ProcessSP CreateInstance(lldb::TargetSP target_sp, + lldb::ListenerSP listener_sp, + const FileSpec *crash_file_path); + + static void Initialize(); + + static void Terminate(); + + static ConstString GetPluginNameStatic(); + + static const char *GetPluginDescriptionStatic(); + + ProcessMinidump(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp, + const lldb_private::FileSpec &core_file, + MinidumpParser minidump_parser); + + ~ProcessMinidump() override; + + bool CanDebug(lldb::TargetSP target_sp, + bool plugin_specified_by_name) override; + + Error DoLoadCore() override; + + DynamicLoader *GetDynamicLoader() override; + + ConstString GetPluginName() override; + + uint32_t GetPluginVersion() override; + + Error DoDestroy() override; + + void RefreshStateAfterStop() override; + + bool IsAlive() override; + + bool WarnBeforeDetach() const override; + + size_t ReadMemory(lldb::addr_t addr, void *buf, size_t size, + Error &error) override; + + size_t DoReadMemory(lldb::addr_t addr, void *buf, size_t size, + Error &error) override; + + ArchSpec GetArchitecture(); + + Error GetMemoryRegionInfo(lldb::addr_t load_addr, + MemoryRegionInfo &range_info) override; + + MinidumpParser m_minidump_parser; + +protected: + void Clear(); + + bool UpdateThreadList(ThreadList &old_thread_list, + ThreadList &new_thread_list) override; + + void ReadModuleList(); + +private: + FileSpec m_core_file; + llvm::ArrayRef<MinidumpThread> m_thread_list; + const MinidumpExceptionStream *m_active_exception; +}; + +} // namespace minidump +} // namespace lldb_private + +#endif // liblldb_ProcessMinidump_h_ diff --git a/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp b/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp new file mode 100644 index 00000000000..22641da9e69 --- /dev/null +++ b/lldb/source/Plugins/Process/minidump/ThreadMinidump.cpp @@ -0,0 +1,102 @@ +//===-- ThreadMinidump.cpp --------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// Project includes +#include "ThreadMinidump.h" +#include "ProcessMinidump.h" + +#include "RegisterContextMinidump_x86_64.h" + +// Other libraries and framework includes +#include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h" + +#include "Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h" + +#include "lldb/Core/DataExtractor.h" +#include "lldb/Core/Log.h" +#include "lldb/Target/RegisterContext.h" +#include "lldb/Target/StopInfo.h" +#include "lldb/Target/Target.h" +#include "lldb/Target/Unwind.h" + +// C Includes +// C++ Includes + +using namespace lldb; +using namespace lldb_private; +using namespace minidump; + +ThreadMinidump::ThreadMinidump(Process &process, const MinidumpThread &td, + llvm::ArrayRef<uint8_t> gpregset_data) + : Thread(process, td.thread_id), m_thread_reg_ctx_sp(), + m_gpregset_data(gpregset_data) {} + +ThreadMinidump::~ThreadMinidump() {} + +void ThreadMinidump::RefreshStateAfterStop() {} + +void ThreadMinidump::ClearStackFrames() {} + +RegisterContextSP ThreadMinidump::GetRegisterContext() { + if (!m_reg_context_sp) { + m_reg_context_sp = CreateRegisterContextForFrame(nullptr); + } + return m_reg_context_sp; +} + +RegisterContextSP +ThreadMinidump::CreateRegisterContextForFrame(StackFrame *frame) { + RegisterContextSP reg_ctx_sp; + uint32_t concrete_frame_idx = 0; + Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD)); + + if (frame) + concrete_frame_idx = frame->GetConcreteFrameIndex(); + + if (concrete_frame_idx == 0) { + if (m_thread_reg_ctx_sp) + return m_thread_reg_ctx_sp; + + ProcessMinidump *process = + static_cast<ProcessMinidump *>(GetProcess().get()); + ArchSpec arch = process->GetArchitecture(); + RegisterInfoInterface *reg_interface = nullptr; + + // TODO write other register contexts and add them here + switch (arch.GetMachine()) { + case llvm::Triple::x86_64: { + reg_interface = new RegisterContextLinux_x86_64(arch); + lldb::DataBufferSP buf = + ConvertMinidumpContextToRegIface(m_gpregset_data, reg_interface); + DataExtractor gpregs(buf, lldb::eByteOrderLittle, 8); + DataExtractor fpregs; + m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_x86_64( + *this, reg_interface, gpregs, fpregs)); + break; + } + default: + break; + } + + if (!reg_interface) { + if (log) + log->Printf("elf-core::%s:: Architecture(%d) not supported", + __FUNCTION__, arch.GetMachine()); + assert(false && "Architecture not supported"); + } + + reg_ctx_sp = m_thread_reg_ctx_sp; + } else if (m_unwinder_ap) { + reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame(frame); + } + + return reg_ctx_sp; +} + +bool ThreadMinidump::CalculateStopInfo() { return false; } diff --git a/lldb/source/Plugins/Process/minidump/ThreadMinidump.h b/lldb/source/Plugins/Process/minidump/ThreadMinidump.h new file mode 100644 index 00000000000..97db452edff --- /dev/null +++ b/lldb/source/Plugins/Process/minidump/ThreadMinidump.h @@ -0,0 +1,52 @@ +//===-- ThreadMinidump.h ---------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef liblldb_ThreadMinidump_h_ +#define liblldb_ThreadMinidump_h_ + +// Project includes +#include "MinidumpTypes.h" + +// Other libraries and framework includes +#include "lldb/Target/Thread.h" + +// C Includes +// C++ Includes + +namespace lldb_private { + +namespace minidump { + +class ThreadMinidump : public Thread { +public: + ThreadMinidump(Process &process, const MinidumpThread &td, + llvm::ArrayRef<uint8_t> gpregset_data); + + ~ThreadMinidump() override; + + void RefreshStateAfterStop() override; + + lldb::RegisterContextSP GetRegisterContext() override; + + lldb::RegisterContextSP + CreateRegisterContextForFrame(StackFrame *frame) override; + + void ClearStackFrames() override; + +protected: + lldb::RegisterContextSP m_thread_reg_ctx_sp; + llvm::ArrayRef<uint8_t> m_gpregset_data; + + bool CalculateStopInfo() override; +}; + +} // namespace minidump +} // namespace lldb_private + +#endif // liblldb_ThreadMinidump_h_ |
